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vitessio/vitess
go/mysql/conn.go
writeErrorPacketFromError
func (c *Conn) writeErrorPacketFromError(err error) error { if se, ok := err.(*SQLError); ok { return c.writeErrorPacket(uint16(se.Num), se.State, "%v", se.Message) } return c.writeErrorPacket(ERUnknownError, SSUnknownSQLState, "unknown error: %v", err) }
go
func (c *Conn) writeErrorPacketFromError(err error) error { if se, ok := err.(*SQLError); ok { return c.writeErrorPacket(uint16(se.Num), se.State, "%v", se.Message) } return c.writeErrorPacket(ERUnknownError, SSUnknownSQLState, "unknown error: %v", err) }
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// writeErrorPacketFromError writes an error packet, from a regular error. // See writeErrorPacket for other info.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/mysql/conn.go#L668-L674
train
vitessio/vitess
go/mysql/conn.go
ParseErrorPacket
func ParseErrorPacket(data []byte) error { // We already read the type. pos := 1 // Error code is 2 bytes. code, pos, ok := readUint16(data, pos) if !ok { return NewSQLError(CRUnknownError, SSUnknownSQLState, "invalid error packet code: %v", data) } // '#' marker of the SQL state is 1 byte. Ignored. pos++ // SQL state is 5 bytes sqlState, pos, ok := readBytes(data, pos, 5) if !ok { return NewSQLError(CRUnknownError, SSUnknownSQLState, "invalid error packet sqlState: %v", data) } // Human readable error message is the rest. msg := string(data[pos:]) return NewSQLError(int(code), string(sqlState), "%v", msg) }
go
func ParseErrorPacket(data []byte) error { // We already read the type. pos := 1 // Error code is 2 bytes. code, pos, ok := readUint16(data, pos) if !ok { return NewSQLError(CRUnknownError, SSUnknownSQLState, "invalid error packet code: %v", data) } // '#' marker of the SQL state is 1 byte. Ignored. pos++ // SQL state is 5 bytes sqlState, pos, ok := readBytes(data, pos, 5) if !ok { return NewSQLError(CRUnknownError, SSUnknownSQLState, "invalid error packet sqlState: %v", data) } // Human readable error message is the rest. msg := string(data[pos:]) return NewSQLError(int(code), string(sqlState), "%v", msg) }
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// ParseErrorPacket parses the error packet and returns a SQLError.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/mysql/conn.go#L963-L986
train
vitessio/vitess
go/mysql/query.go
readColumnDefinitionType
func (c *Conn) readColumnDefinitionType(field *querypb.Field, index int) error { colDef, err := c.readEphemeralPacket() if err != nil { return NewSQLError(CRServerLost, SSUnknownSQLState, "%v", err) } defer c.recycleReadPacket() // catalog, schema, table, orgTable, name and orgName are // strings, all skipped. pos, ok := skipLenEncString(colDef, 0) if !ok { return NewSQLError(CRMalformedPacket, SSUnknownSQLState, "skipping col %v catalog failed", index) } pos, ok = skipLenEncString(colDef, pos) if !ok { return NewSQLError(CRMalformedPacket, SSUnknownSQLState, "skipping col %v schema failed", index) } pos, ok = skipLenEncString(colDef, pos) if !ok { return NewSQLError(CRMalformedPacket, SSUnknownSQLState, "skipping col %v table failed", index) } pos, ok = skipLenEncString(colDef, pos) if !ok { return NewSQLError(CRMalformedPacket, SSUnknownSQLState, "skipping col %v org_table failed", index) } pos, ok = skipLenEncString(colDef, pos) if !ok { return NewSQLError(CRMalformedPacket, SSUnknownSQLState, "skipping col %v name failed", index) } pos, ok = skipLenEncString(colDef, pos) if !ok { return NewSQLError(CRMalformedPacket, SSUnknownSQLState, "skipping col %v org_name failed", index) } // Skip length of fixed-length fields. pos++ // characterSet is a uint16. _, pos, ok = readUint16(colDef, pos) if !ok { return NewSQLError(CRMalformedPacket, SSUnknownSQLState, "extracting col %v characterSet failed", index) } // columnLength is a uint32. _, pos, ok = readUint32(colDef, pos) if !ok { return NewSQLError(CRMalformedPacket, SSUnknownSQLState, "extracting col %v columnLength failed", index) } // type is one byte t, pos, ok := readByte(colDef, pos) if !ok { return NewSQLError(CRMalformedPacket, SSUnknownSQLState, "extracting col %v type failed", index) } // flags is 2 bytes flags, _, ok := readUint16(colDef, pos) if !ok { return NewSQLError(CRMalformedPacket, SSUnknownSQLState, "extracting col %v flags failed", index) } // Convert MySQL type to Vitess type. field.Type, err = sqltypes.MySQLToType(int64(t), int64(flags)) if err != nil { return NewSQLError(CRMalformedPacket, SSUnknownSQLState, "MySQLToType(%v,%v) failed for column %v: %v", t, flags, index, err) } // skip decimals return nil }
go
func (c *Conn) readColumnDefinitionType(field *querypb.Field, index int) error { colDef, err := c.readEphemeralPacket() if err != nil { return NewSQLError(CRServerLost, SSUnknownSQLState, "%v", err) } defer c.recycleReadPacket() // catalog, schema, table, orgTable, name and orgName are // strings, all skipped. pos, ok := skipLenEncString(colDef, 0) if !ok { return NewSQLError(CRMalformedPacket, SSUnknownSQLState, "skipping col %v catalog failed", index) } pos, ok = skipLenEncString(colDef, pos) if !ok { return NewSQLError(CRMalformedPacket, SSUnknownSQLState, "skipping col %v schema failed", index) } pos, ok = skipLenEncString(colDef, pos) if !ok { return NewSQLError(CRMalformedPacket, SSUnknownSQLState, "skipping col %v table failed", index) } pos, ok = skipLenEncString(colDef, pos) if !ok { return NewSQLError(CRMalformedPacket, SSUnknownSQLState, "skipping col %v org_table failed", index) } pos, ok = skipLenEncString(colDef, pos) if !ok { return NewSQLError(CRMalformedPacket, SSUnknownSQLState, "skipping col %v name failed", index) } pos, ok = skipLenEncString(colDef, pos) if !ok { return NewSQLError(CRMalformedPacket, SSUnknownSQLState, "skipping col %v org_name failed", index) } // Skip length of fixed-length fields. pos++ // characterSet is a uint16. _, pos, ok = readUint16(colDef, pos) if !ok { return NewSQLError(CRMalformedPacket, SSUnknownSQLState, "extracting col %v characterSet failed", index) } // columnLength is a uint32. _, pos, ok = readUint32(colDef, pos) if !ok { return NewSQLError(CRMalformedPacket, SSUnknownSQLState, "extracting col %v columnLength failed", index) } // type is one byte t, pos, ok := readByte(colDef, pos) if !ok { return NewSQLError(CRMalformedPacket, SSUnknownSQLState, "extracting col %v type failed", index) } // flags is 2 bytes flags, _, ok := readUint16(colDef, pos) if !ok { return NewSQLError(CRMalformedPacket, SSUnknownSQLState, "extracting col %v flags failed", index) } // Convert MySQL type to Vitess type. field.Type, err = sqltypes.MySQLToType(int64(t), int64(flags)) if err != nil { return NewSQLError(CRMalformedPacket, SSUnknownSQLState, "MySQLToType(%v,%v) failed for column %v: %v", t, flags, index, err) } // skip decimals return nil }
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// readColumnDefinitionType is a faster version of // readColumnDefinition that only fills in the Type. // Returns a SQLError.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/mysql/query.go#L175-L245
train
vitessio/vitess
go/mysql/query.go
parseRow
func (c *Conn) parseRow(data []byte, fields []*querypb.Field) ([]sqltypes.Value, error) { colNumber := len(fields) result := make([]sqltypes.Value, colNumber) pos := 0 for i := 0; i < colNumber; i++ { if data[pos] == 0xfb { pos++ continue } var s []byte var ok bool s, pos, ok = readLenEncStringAsBytes(data, pos) if !ok { return nil, NewSQLError(CRMalformedPacket, SSUnknownSQLState, "decoding string failed") } result[i] = sqltypes.MakeTrusted(fields[i].Type, s) } return result, nil }
go
func (c *Conn) parseRow(data []byte, fields []*querypb.Field) ([]sqltypes.Value, error) { colNumber := len(fields) result := make([]sqltypes.Value, colNumber) pos := 0 for i := 0; i < colNumber; i++ { if data[pos] == 0xfb { pos++ continue } var s []byte var ok bool s, pos, ok = readLenEncStringAsBytes(data, pos) if !ok { return nil, NewSQLError(CRMalformedPacket, SSUnknownSQLState, "decoding string failed") } result[i] = sqltypes.MakeTrusted(fields[i].Type, s) } return result, nil }
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// parseRow parses an individual row. // Returns a SQLError.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/mysql/query.go#L249-L267
train
vitessio/vitess
go/mysql/query.go
ExecuteFetchMulti
func (c *Conn) ExecuteFetchMulti(query string, maxrows int, wantfields bool) (result *sqltypes.Result, more bool, err error) { defer func() { if err != nil { if sqlerr, ok := err.(*SQLError); ok { sqlerr.Query = query } } }() // Send the query as a COM_QUERY packet. if err = c.WriteComQuery(query); err != nil { return nil, false, err } res, more, _, err := c.ReadQueryResult(maxrows, wantfields) return res, more, err }
go
func (c *Conn) ExecuteFetchMulti(query string, maxrows int, wantfields bool) (result *sqltypes.Result, more bool, err error) { defer func() { if err != nil { if sqlerr, ok := err.(*SQLError); ok { sqlerr.Query = query } } }() // Send the query as a COM_QUERY packet. if err = c.WriteComQuery(query); err != nil { return nil, false, err } res, more, _, err := c.ReadQueryResult(maxrows, wantfields) return res, more, err }
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// ExecuteFetchMulti is for fetching multiple results from a multi-statement result. // It returns an additional 'more' flag. If it is set, you must fetch the additional // results using ReadQueryResult.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/mysql/query.go#L300-L316
train
vitessio/vitess
go/mysql/query.go
drainResults
func (c *Conn) drainResults() error { for { data, err := c.readEphemeralPacket() if err != nil { return NewSQLError(CRServerLost, SSUnknownSQLState, "%v", err) } if isEOFPacket(data) { c.recycleReadPacket() return nil } else if isErrorPacket(data) { defer c.recycleReadPacket() return ParseErrorPacket(data) } c.recycleReadPacket() } }
go
func (c *Conn) drainResults() error { for { data, err := c.readEphemeralPacket() if err != nil { return NewSQLError(CRServerLost, SSUnknownSQLState, "%v", err) } if isEOFPacket(data) { c.recycleReadPacket() return nil } else if isErrorPacket(data) { defer c.recycleReadPacket() return ParseErrorPacket(data) } c.recycleReadPacket() } }
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// drainResults will read all packets for a result set and ignore them.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/mysql/query.go#L452-L467
train
vitessio/vitess
go/mysql/query.go
writeFields
func (c *Conn) writeFields(result *sqltypes.Result) error { // Send the number of fields first. if err := c.sendColumnCount(uint64(len(result.Fields))); err != nil { return err } // Now send each Field. for _, field := range result.Fields { if err := c.writeColumnDefinition(field); err != nil { return err } } // Now send an EOF packet. if c.Capabilities&CapabilityClientDeprecateEOF == 0 { // With CapabilityClientDeprecateEOF, we do not send this EOF. if err := c.writeEOFPacket(c.StatusFlags, 0); err != nil { return err } } return nil }
go
func (c *Conn) writeFields(result *sqltypes.Result) error { // Send the number of fields first. if err := c.sendColumnCount(uint64(len(result.Fields))); err != nil { return err } // Now send each Field. for _, field := range result.Fields { if err := c.writeColumnDefinition(field); err != nil { return err } } // Now send an EOF packet. if c.Capabilities&CapabilityClientDeprecateEOF == 0 { // With CapabilityClientDeprecateEOF, we do not send this EOF. if err := c.writeEOFPacket(c.StatusFlags, 0); err != nil { return err } } return nil }
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// writeFields writes the fields of a Result. It should be called only // if there are valid columns in the result.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/mysql/query.go#L603-L624
train
vitessio/vitess
go/mysql/query.go
writeRows
func (c *Conn) writeRows(result *sqltypes.Result) error { for _, row := range result.Rows { if err := c.writeRow(row); err != nil { return err } } return nil }
go
func (c *Conn) writeRows(result *sqltypes.Result) error { for _, row := range result.Rows { if err := c.writeRow(row); err != nil { return err } } return nil }
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// writeRows sends the rows of a Result.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/mysql/query.go#L627-L634
train
vitessio/vitess
go/mysql/query.go
writeEndResult
func (c *Conn) writeEndResult(more bool, affectedRows, lastInsertID uint64, warnings uint16) error { // Send either an EOF, or an OK packet. // See doc.go. flags := c.StatusFlags if more { flags |= ServerMoreResultsExists } if c.Capabilities&CapabilityClientDeprecateEOF == 0 { if err := c.writeEOFPacket(flags, warnings); err != nil { return err } } else { // This will flush too. if err := c.writeOKPacketWithEOFHeader(affectedRows, lastInsertID, flags, warnings); err != nil { return err } } return nil }
go
func (c *Conn) writeEndResult(more bool, affectedRows, lastInsertID uint64, warnings uint16) error { // Send either an EOF, or an OK packet. // See doc.go. flags := c.StatusFlags if more { flags |= ServerMoreResultsExists } if c.Capabilities&CapabilityClientDeprecateEOF == 0 { if err := c.writeEOFPacket(flags, warnings); err != nil { return err } } else { // This will flush too. if err := c.writeOKPacketWithEOFHeader(affectedRows, lastInsertID, flags, warnings); err != nil { return err } } return nil }
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// writeEndResult concludes the sending of a Result. // if more is set to true, then it means there are more results afterwords
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/mysql/query.go#L638-L657
train
vitessio/vitess
go/vt/sqlparser/parsed_query.go
NewParsedQuery
func NewParsedQuery(node SQLNode) *ParsedQuery { buf := NewTrackedBuffer(nil) buf.Myprintf("%v", node) return buf.ParsedQuery() }
go
func NewParsedQuery(node SQLNode) *ParsedQuery { buf := NewTrackedBuffer(nil) buf.Myprintf("%v", node) return buf.ParsedQuery() }
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// NewParsedQuery returns a ParsedQuery of the ast.
[ "NewParsedQuery", "returns", "a", "ParsedQuery", "of", "the", "ast", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/sqlparser/parsed_query.go#L41-L45
train
vitessio/vitess
go/vt/sqlparser/parsed_query.go
GenerateQuery
func (pq *ParsedQuery) GenerateQuery(bindVariables map[string]*querypb.BindVariable, extras map[string]Encodable) (string, error) { if len(pq.bindLocations) == 0 { return pq.Query, nil } var buf strings.Builder buf.Grow(len(pq.Query)) if err := pq.Append(&buf, bindVariables, extras); err != nil { return "", err } return buf.String(), nil }
go
func (pq *ParsedQuery) GenerateQuery(bindVariables map[string]*querypb.BindVariable, extras map[string]Encodable) (string, error) { if len(pq.bindLocations) == 0 { return pq.Query, nil } var buf strings.Builder buf.Grow(len(pq.Query)) if err := pq.Append(&buf, bindVariables, extras); err != nil { return "", err } return buf.String(), nil }
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// GenerateQuery generates a query by substituting the specified // bindVariables. The extras parameter specifies special parameters // that can perform custom encoding.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/sqlparser/parsed_query.go#L50-L60
train
vitessio/vitess
go/vt/sqlparser/parsed_query.go
Append
func (pq *ParsedQuery) Append(buf *strings.Builder, bindVariables map[string]*querypb.BindVariable, extras map[string]Encodable) error { current := 0 for _, loc := range pq.bindLocations { buf.WriteString(pq.Query[current:loc.offset]) name := pq.Query[loc.offset : loc.offset+loc.length] if encodable, ok := extras[name[1:]]; ok { encodable.EncodeSQL(buf) } else { supplied, _, err := FetchBindVar(name, bindVariables) if err != nil { return err } EncodeValue(buf, supplied) } current = loc.offset + loc.length } buf.WriteString(pq.Query[current:]) return nil }
go
func (pq *ParsedQuery) Append(buf *strings.Builder, bindVariables map[string]*querypb.BindVariable, extras map[string]Encodable) error { current := 0 for _, loc := range pq.bindLocations { buf.WriteString(pq.Query[current:loc.offset]) name := pq.Query[loc.offset : loc.offset+loc.length] if encodable, ok := extras[name[1:]]; ok { encodable.EncodeSQL(buf) } else { supplied, _, err := FetchBindVar(name, bindVariables) if err != nil { return err } EncodeValue(buf, supplied) } current = loc.offset + loc.length } buf.WriteString(pq.Query[current:]) return nil }
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// Append appends the generated query to the provided buffer.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/sqlparser/parsed_query.go#L63-L81
train
vitessio/vitess
go/vt/sqlparser/parsed_query.go
MarshalJSON
func (pq *ParsedQuery) MarshalJSON() ([]byte, error) { return json.Marshal(TruncateForUI(pq.Query)) }
go
func (pq *ParsedQuery) MarshalJSON() ([]byte, error) { return json.Marshal(TruncateForUI(pq.Query)) }
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// MarshalJSON is a custom JSON marshaler for ParsedQuery. // Note that any queries longer that 512 bytes will be truncated.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/sqlparser/parsed_query.go#L85-L87
train
vitessio/vitess
go/vt/sqlparser/parsed_query.go
FetchBindVar
func FetchBindVar(name string, bindVariables map[string]*querypb.BindVariable) (val *querypb.BindVariable, isList bool, err error) { name = name[1:] if name[0] == ':' { name = name[1:] isList = true } supplied, ok := bindVariables[name] if !ok { return nil, false, fmt.Errorf("missing bind var %s", name) } if isList { if supplied.Type != querypb.Type_TUPLE { return nil, false, fmt.Errorf("unexpected list arg type (%v) for key %s", supplied.Type, name) } if len(supplied.Values) == 0 { return nil, false, fmt.Errorf("empty list supplied for %s", name) } return supplied, true, nil } if supplied.Type == querypb.Type_TUPLE { return nil, false, fmt.Errorf("unexpected arg type (TUPLE) for non-list key %s", name) } return supplied, false, nil }
go
func FetchBindVar(name string, bindVariables map[string]*querypb.BindVariable) (val *querypb.BindVariable, isList bool, err error) { name = name[1:] if name[0] == ':' { name = name[1:] isList = true } supplied, ok := bindVariables[name] if !ok { return nil, false, fmt.Errorf("missing bind var %s", name) } if isList { if supplied.Type != querypb.Type_TUPLE { return nil, false, fmt.Errorf("unexpected list arg type (%v) for key %s", supplied.Type, name) } if len(supplied.Values) == 0 { return nil, false, fmt.Errorf("empty list supplied for %s", name) } return supplied, true, nil } if supplied.Type == querypb.Type_TUPLE { return nil, false, fmt.Errorf("unexpected arg type (TUPLE) for non-list key %s", name) } return supplied, false, nil }
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// FetchBindVar resolves the bind variable by fetching it from bindVariables.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/sqlparser/parsed_query.go#L110-L136
train
vitessio/vitess
go/vt/concurrency/error_recorder.go
Error
func (fer *FirstErrorRecorder) Error() error { fer.mu.Lock() defer fer.mu.Unlock() return fer.firstError }
go
func (fer *FirstErrorRecorder) Error() error { fer.mu.Lock() defer fer.mu.Unlock() return fer.firstError }
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// Error returns the first error we saw, or nil
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/concurrency/error_recorder.go#L70-L74
train
vitessio/vitess
go/vt/concurrency/error_recorder.go
AggrError
func (aer *AllErrorRecorder) AggrError(aggr AllErrorAggregator) error { aer.mu.Lock() defer aer.mu.Unlock() if len(aer.Errors) == 0 { return nil } return aggr(aer.Errors) }
go
func (aer *AllErrorRecorder) AggrError(aggr AllErrorAggregator) error { aer.mu.Lock() defer aer.mu.Unlock() if len(aer.Errors) == 0 { return nil } return aggr(aer.Errors) }
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// AggrError runs the provided aggregator over all errors // and returns the error from aggregator.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/concurrency/error_recorder.go#L105-L112
train
vitessio/vitess
go/vt/concurrency/error_recorder.go
Error
func (aer *AllErrorRecorder) Error() error { return aer.AggrError(func(errors []error) error { errs := make([]string, 0, len(errors)) for _, e := range errors { errs = append(errs, e.Error()) } return fmt.Errorf("%v", strings.Join(errs, ";")) }) }
go
func (aer *AllErrorRecorder) Error() error { return aer.AggrError(func(errors []error) error { errs := make([]string, 0, len(errors)) for _, e := range errors { errs = append(errs, e.Error()) } return fmt.Errorf("%v", strings.Join(errs, ";")) }) }
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// Error returns an aggregate of all errors by concatenation.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/concurrency/error_recorder.go#L115-L123
train
vitessio/vitess
go/vt/concurrency/error_recorder.go
ErrorStrings
func (aer *AllErrorRecorder) ErrorStrings() []string { aer.mu.Lock() defer aer.mu.Unlock() if len(aer.Errors) == 0 { return nil } errs := make([]string, 0, len(aer.Errors)) for _, e := range aer.Errors { errs = append(errs, e.Error()) } return errs }
go
func (aer *AllErrorRecorder) ErrorStrings() []string { aer.mu.Lock() defer aer.mu.Unlock() if len(aer.Errors) == 0 { return nil } errs := make([]string, 0, len(aer.Errors)) for _, e := range aer.Errors { errs = append(errs, e.Error()) } return errs }
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// ErrorStrings returns all errors as string array.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/concurrency/error_recorder.go#L126-L137
train
vitessio/vitess
go/vt/concurrency/error_recorder.go
GetErrors
func (aer *AllErrorRecorder) GetErrors() []error { aer.mu.Lock() defer aer.mu.Unlock() return aer.Errors }
go
func (aer *AllErrorRecorder) GetErrors() []error { aer.mu.Lock() defer aer.mu.Unlock() return aer.Errors }
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// GetErrors returns a reference to the internal errors array. // // Note that the array is not copied, so this should only be used // once the recording is complete.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/concurrency/error_recorder.go#L143-L147
train
vitessio/vitess
go/vt/workflow/parallel_runner.go
NewParallelRunner
func NewParallelRunner(ctx context.Context, rootUINode *Node, cp *CheckpointWriter, tasks []*workflowpb.Task, executeFunc func(context.Context, *workflowpb.Task) error, concurrencyLevel level, enableApprovals bool) *ParallelRunner { if len(tasks) < 1 { log.Fatal("BUG: No tasks passed into ParallelRunner") } phaseID := path.Dir(tasks[0].Id) phaseUINode, err := rootUINode.GetChildByPath(phaseID) if err != nil { log.Fatalf("BUG: nodepath %v not found", phaseID) } p := &ParallelRunner{ ctx: ctx, uiLogger: logutil.NewMemoryLogger(), rootUINode: rootUINode, phaseUINode: phaseUINode, checkpointWriter: cp, tasks: tasks, executeFunc: executeFunc, concurrencyLevel: concurrencyLevel, retryActionRegistry: make(map[string]chan struct{}), enableApprovals: enableApprovals, } if p.enableApprovals { p.initApprovalActions() } return p }
go
func NewParallelRunner(ctx context.Context, rootUINode *Node, cp *CheckpointWriter, tasks []*workflowpb.Task, executeFunc func(context.Context, *workflowpb.Task) error, concurrencyLevel level, enableApprovals bool) *ParallelRunner { if len(tasks) < 1 { log.Fatal("BUG: No tasks passed into ParallelRunner") } phaseID := path.Dir(tasks[0].Id) phaseUINode, err := rootUINode.GetChildByPath(phaseID) if err != nil { log.Fatalf("BUG: nodepath %v not found", phaseID) } p := &ParallelRunner{ ctx: ctx, uiLogger: logutil.NewMemoryLogger(), rootUINode: rootUINode, phaseUINode: phaseUINode, checkpointWriter: cp, tasks: tasks, executeFunc: executeFunc, concurrencyLevel: concurrencyLevel, retryActionRegistry: make(map[string]chan struct{}), enableApprovals: enableApprovals, } if p.enableApprovals { p.initApprovalActions() } return p }
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// NewParallelRunner returns a new ParallelRunner.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/workflow/parallel_runner.go#L84-L113
train
vitessio/vitess
go/vt/workflow/parallel_runner.go
Run
func (p *ParallelRunner) Run() error { // default value is 0. The task will not run in this case. var parallelNum int switch p.concurrencyLevel { case Sequential: parallelNum = 1 case Parallel: parallelNum = len(p.tasks) default: log.Fatalf("BUG: Invalid concurrency level: %v", p.concurrencyLevel) } // sem is a channel used to control the level of concurrency. sem := make(chan bool, parallelNum) wg := sync.WaitGroup{} for i, task := range p.tasks { if isTaskSucceeded(task) { continue } sem <- true if p.enableApprovals && !isTaskRunning(task) { p.waitForApproval(i) } select { case <-p.ctx.Done(): // Break this run and return early. Do not try to execute any subsequent tasks. log.Infof("Workflow is cancelled, remaining tasks will be aborted") return nil default: wg.Add(1) go func(t *workflowpb.Task) { defer wg.Done() p.setUIMessage(fmt.Sprintf("Launch task: %v.", t.Id)) defer func() { <-sem }() p.executeTask(t) }(task) } } wg.Wait() if p.enableApprovals { p.clearPhaseActions() } // TODO(yipeiw): collect error message from tasks.Error instead, // s.t. if the task is retried, we can update the error return nil }
go
func (p *ParallelRunner) Run() error { // default value is 0. The task will not run in this case. var parallelNum int switch p.concurrencyLevel { case Sequential: parallelNum = 1 case Parallel: parallelNum = len(p.tasks) default: log.Fatalf("BUG: Invalid concurrency level: %v", p.concurrencyLevel) } // sem is a channel used to control the level of concurrency. sem := make(chan bool, parallelNum) wg := sync.WaitGroup{} for i, task := range p.tasks { if isTaskSucceeded(task) { continue } sem <- true if p.enableApprovals && !isTaskRunning(task) { p.waitForApproval(i) } select { case <-p.ctx.Done(): // Break this run and return early. Do not try to execute any subsequent tasks. log.Infof("Workflow is cancelled, remaining tasks will be aborted") return nil default: wg.Add(1) go func(t *workflowpb.Task) { defer wg.Done() p.setUIMessage(fmt.Sprintf("Launch task: %v.", t.Id)) defer func() { <-sem }() p.executeTask(t) }(task) } } wg.Wait() if p.enableApprovals { p.clearPhaseActions() } // TODO(yipeiw): collect error message from tasks.Error instead, // s.t. if the task is retried, we can update the error return nil }
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// Run is the entry point for controlling task executions.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/workflow/parallel_runner.go#L116-L162
train
vitessio/vitess
go/vt/workflow/parallel_runner.go
Action
func (p *ParallelRunner) Action(ctx context.Context, path, name string) error { switch name { case actionNameRetry: // Extract the path relative to the root node. parts := strings.Split(path, "/") taskID := strings.Join(parts[2:], "/") return p.triggerRetry(taskID) case actionNameApproveFirstTask: p.mu.Lock() defer p.mu.Unlock() if p.firstTaskApproved != nil { close(p.firstTaskApproved) p.firstTaskApproved = nil return nil } return fmt.Errorf("ignored the approval action %v because no pending approval found: it might be already approved before", actionNameApproveFirstTask) case actionNameApproveRemainingTasks: p.mu.Lock() defer p.mu.Unlock() if p.remainingTasksApproved != nil { close(p.remainingTasksApproved) p.remainingTasksApproved = nil return nil } return fmt.Errorf("ignored the approval action %v because no pending approval found: it might be already approved before", actionNameApproveRemainingTasks) default: return fmt.Errorf("unknown action: %v", name) } }
go
func (p *ParallelRunner) Action(ctx context.Context, path, name string) error { switch name { case actionNameRetry: // Extract the path relative to the root node. parts := strings.Split(path, "/") taskID := strings.Join(parts[2:], "/") return p.triggerRetry(taskID) case actionNameApproveFirstTask: p.mu.Lock() defer p.mu.Unlock() if p.firstTaskApproved != nil { close(p.firstTaskApproved) p.firstTaskApproved = nil return nil } return fmt.Errorf("ignored the approval action %v because no pending approval found: it might be already approved before", actionNameApproveFirstTask) case actionNameApproveRemainingTasks: p.mu.Lock() defer p.mu.Unlock() if p.remainingTasksApproved != nil { close(p.remainingTasksApproved) p.remainingTasksApproved = nil return nil } return fmt.Errorf("ignored the approval action %v because no pending approval found: it might be already approved before", actionNameApproveRemainingTasks) default: return fmt.Errorf("unknown action: %v", name) } }
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// Action handles retrying, approval of the first task and approval of the // remaining tasks actions. It implements the interface ActionListener.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/workflow/parallel_runner.go#L208-L238
train
vitessio/vitess
go/vt/workflow/parallel_runner.go
VerifyAllTasksDone
func VerifyAllTasksDone(ctx context.Context, ts *topo.Server, uuid string) error { return verifyAllTasksState(ctx, ts, uuid, workflowpb.TaskState_TaskDone) }
go
func VerifyAllTasksDone(ctx context.Context, ts *topo.Server, uuid string) error { return verifyAllTasksState(ctx, ts, uuid, workflowpb.TaskState_TaskDone) }
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// VerifyAllTasksDone checks that all tasks are done in a workflow. This should only be used for test purposes.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/workflow/parallel_runner.go#L429-L431
train
vitessio/vitess
go/vt/workflow/parallel_runner.go
verifyAllTasksState
func verifyAllTasksState(ctx context.Context, ts *topo.Server, uuid string, taskState workflowpb.TaskState) error { checkpoint, err := checkpoint(ctx, ts, uuid) if err != nil { return err } for _, task := range checkpoint.Tasks { if task.State != taskState || task.Error != "" { return fmt.Errorf("task: %v should succeed: task status: %v, %v", task.Id, task.State, task.Attributes) } } return nil }
go
func verifyAllTasksState(ctx context.Context, ts *topo.Server, uuid string, taskState workflowpb.TaskState) error { checkpoint, err := checkpoint(ctx, ts, uuid) if err != nil { return err } for _, task := range checkpoint.Tasks { if task.State != taskState || task.Error != "" { return fmt.Errorf("task: %v should succeed: task status: %v, %v", task.Id, task.State, task.Attributes) } } return nil }
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//verifyAllTasksState verifies that all tasks are in taskState. Only for tests purposes.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/workflow/parallel_runner.go#L434-L446
train
vitessio/vitess
go/vt/workflow/parallel_runner.go
verifyTask
func verifyTask(ctx context.Context, ts *topo.Server, uuid, taskID string, taskState workflowpb.TaskState, taskError string) error { checkpoint, err := checkpoint(ctx, ts, uuid) if err != nil { return err } task := checkpoint.Tasks[taskID] if task.State != taskState || task.Error != taskError { return fmt.Errorf("task status: %v, %v fails to match expected status: %v, %v", task.State, task.Error, taskState, taskError) } return nil }
go
func verifyTask(ctx context.Context, ts *topo.Server, uuid, taskID string, taskState workflowpb.TaskState, taskError string) error { checkpoint, err := checkpoint(ctx, ts, uuid) if err != nil { return err } task := checkpoint.Tasks[taskID] if task.State != taskState || task.Error != taskError { return fmt.Errorf("task status: %v, %v fails to match expected status: %v, %v", task.State, task.Error, taskState, taskError) } return nil }
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// verifyTask verifies that a task is in taskState. Only for test purposes.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/workflow/parallel_runner.go#L449-L460
train
vitessio/vitess
go/vt/workflow/parallel_runner.go
checkpoint
func checkpoint(ctx context.Context, ts *topo.Server, uuid string) (*workflowpb.WorkflowCheckpoint, error) { wi, err := ts.GetWorkflow(ctx, uuid) if err != nil { return nil, fmt.Errorf("fail to get workflow for: %v", uuid) } checkpoint := &workflowpb.WorkflowCheckpoint{} if err := proto.Unmarshal(wi.Data, checkpoint); err != nil { return nil, fmt.Errorf("fails to get checkpoint for the workflow: %v", err) } return checkpoint, nil }
go
func checkpoint(ctx context.Context, ts *topo.Server, uuid string) (*workflowpb.WorkflowCheckpoint, error) { wi, err := ts.GetWorkflow(ctx, uuid) if err != nil { return nil, fmt.Errorf("fail to get workflow for: %v", uuid) } checkpoint := &workflowpb.WorkflowCheckpoint{} if err := proto.Unmarshal(wi.Data, checkpoint); err != nil { return nil, fmt.Errorf("fails to get checkpoint for the workflow: %v", err) } return checkpoint, nil }
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// checkpoint gets Worfklow from topo server. Only for test purposes.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/workflow/parallel_runner.go#L463-L473
train
vitessio/vitess
go/vt/topo/stats_conn.go
NewStatsConn
func NewStatsConn(cell string, conn Conn) *StatsConn { return &StatsConn{ cell: cell, conn: conn, } }
go
func NewStatsConn(cell string, conn Conn) *StatsConn { return &StatsConn{ cell: cell, conn: conn, } }
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// NewStatsConn returns a StatsConn
[ "NewStatsConn", "returns", "a", "StatsConn" ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/topo/stats_conn.go#L45-L50
train
vitessio/vitess
go/vt/topo/stats_conn.go
ListDir
func (st *StatsConn) ListDir(ctx context.Context, dirPath string, full bool) ([]DirEntry, error) { startTime := time.Now() statsKey := []string{"ListDir", st.cell} defer topoStatsConnTimings.Record(statsKey, startTime) res, err := st.conn.ListDir(ctx, dirPath, full) if err != nil { topoStatsConnErrors.Add(statsKey, int64(1)) return res, err } return res, err }
go
func (st *StatsConn) ListDir(ctx context.Context, dirPath string, full bool) ([]DirEntry, error) { startTime := time.Now() statsKey := []string{"ListDir", st.cell} defer topoStatsConnTimings.Record(statsKey, startTime) res, err := st.conn.ListDir(ctx, dirPath, full) if err != nil { topoStatsConnErrors.Add(statsKey, int64(1)) return res, err } return res, err }
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// ListDir is part of the Conn interface
[ "ListDir", "is", "part", "of", "the", "Conn", "interface" ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/topo/stats_conn.go#L53-L63
train
vitessio/vitess
go/vt/topo/stats_conn.go
Create
func (st *StatsConn) Create(ctx context.Context, filePath string, contents []byte) (Version, error) { startTime := time.Now() statsKey := []string{"Create", st.cell} defer topoStatsConnTimings.Record(statsKey, startTime) res, err := st.conn.Create(ctx, filePath, contents) if err != nil { topoStatsConnErrors.Add(statsKey, int64(1)) return res, err } return res, err }
go
func (st *StatsConn) Create(ctx context.Context, filePath string, contents []byte) (Version, error) { startTime := time.Now() statsKey := []string{"Create", st.cell} defer topoStatsConnTimings.Record(statsKey, startTime) res, err := st.conn.Create(ctx, filePath, contents) if err != nil { topoStatsConnErrors.Add(statsKey, int64(1)) return res, err } return res, err }
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// Create is part of the Conn interface
[ "Create", "is", "part", "of", "the", "Conn", "interface" ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/topo/stats_conn.go#L66-L76
train
vitessio/vitess
go/vt/topo/stats_conn.go
Lock
func (st *StatsConn) Lock(ctx context.Context, dirPath, contents string) (LockDescriptor, error) { startTime := time.Now() statsKey := []string{"Lock", st.cell} defer topoStatsConnTimings.Record(statsKey, startTime) res, err := st.conn.Lock(ctx, dirPath, contents) if err != nil { topoStatsConnErrors.Add(statsKey, int64(1)) return res, err } return res, err }
go
func (st *StatsConn) Lock(ctx context.Context, dirPath, contents string) (LockDescriptor, error) { startTime := time.Now() statsKey := []string{"Lock", st.cell} defer topoStatsConnTimings.Record(statsKey, startTime) res, err := st.conn.Lock(ctx, dirPath, contents) if err != nil { topoStatsConnErrors.Add(statsKey, int64(1)) return res, err } return res, err }
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// Lock is part of the Conn interface
[ "Lock", "is", "part", "of", "the", "Conn", "interface" ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/topo/stats_conn.go#L118-L128
train
vitessio/vitess
go/vt/topo/stats_conn.go
Watch
func (st *StatsConn) Watch(ctx context.Context, filePath string) (current *WatchData, changes <-chan *WatchData, cancel CancelFunc) { startTime := time.Now() statsKey := []string{"Watch", st.cell} defer topoStatsConnTimings.Record(statsKey, startTime) return st.conn.Watch(ctx, filePath) }
go
func (st *StatsConn) Watch(ctx context.Context, filePath string) (current *WatchData, changes <-chan *WatchData, cancel CancelFunc) { startTime := time.Now() statsKey := []string{"Watch", st.cell} defer topoStatsConnTimings.Record(statsKey, startTime) return st.conn.Watch(ctx, filePath) }
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// Watch is part of the Conn interface
[ "Watch", "is", "part", "of", "the", "Conn", "interface" ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/topo/stats_conn.go#L131-L136
train
vitessio/vitess
go/vt/topo/stats_conn.go
NewMasterParticipation
func (st *StatsConn) NewMasterParticipation(name, id string) (MasterParticipation, error) { startTime := time.Now() statsKey := []string{"NewMasterParticipation", st.cell} defer topoStatsConnTimings.Record(statsKey, startTime) res, err := st.conn.NewMasterParticipation(name, id) if err != nil { topoStatsConnErrors.Add(statsKey, int64(1)) return res, err } return res, err }
go
func (st *StatsConn) NewMasterParticipation(name, id string) (MasterParticipation, error) { startTime := time.Now() statsKey := []string{"NewMasterParticipation", st.cell} defer topoStatsConnTimings.Record(statsKey, startTime) res, err := st.conn.NewMasterParticipation(name, id) if err != nil { topoStatsConnErrors.Add(statsKey, int64(1)) return res, err } return res, err }
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// NewMasterParticipation is part of the Conn interface
[ "NewMasterParticipation", "is", "part", "of", "the", "Conn", "interface" ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/topo/stats_conn.go#L139-L149
train
vitessio/vitess
go/vt/topo/stats_conn.go
Close
func (st *StatsConn) Close() { startTime := time.Now() statsKey := []string{"Close", st.cell} defer topoStatsConnTimings.Record(statsKey, startTime) st.conn.Close() }
go
func (st *StatsConn) Close() { startTime := time.Now() statsKey := []string{"Close", st.cell} defer topoStatsConnTimings.Record(statsKey, startTime) st.conn.Close() }
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// Close is part of the Conn interface
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/topo/stats_conn.go#L152-L157
train
vitessio/vitess
go/vt/vttablet/tabletmanager/vreplication/table_plan_builder.go
buildReplicatorPlan
func buildReplicatorPlan(filter *binlogdatapb.Filter, tableKeys map[string][]string, copyState map[string]*sqltypes.Result) (*ReplicatorPlan, error) { plan := &ReplicatorPlan{ VStreamFilter: &binlogdatapb.Filter{}, TargetTables: make(map[string]*TablePlan), TablePlans: make(map[string]*TablePlan), tableKeys: tableKeys, } nextTable: for tableName := range tableKeys { lastpk, ok := copyState[tableName] if ok && lastpk == nil { // Don't replicate uncopied tables. continue } for _, rule := range filter.Rules { switch { case strings.HasPrefix(rule.Match, "/"): expr := strings.Trim(rule.Match, "/") result, err := regexp.MatchString(expr, tableName) if err != nil { return nil, err } if !result { continue } sendRule := &binlogdatapb.Rule{ Match: tableName, Filter: buildQuery(tableName, rule.Filter), } plan.VStreamFilter.Rules = append(plan.VStreamFilter.Rules, sendRule) tablePlan := &TablePlan{ TargetName: tableName, SendRule: sendRule, } plan.TargetTables[tableName] = tablePlan plan.TablePlans[tableName] = tablePlan continue nextTable case rule.Match == tableName: tablePlan, err := buildTablePlan(rule, tableKeys, lastpk) if err != nil { return nil, err } if _, ok := plan.TablePlans[tablePlan.SendRule.Match]; ok { continue } plan.VStreamFilter.Rules = append(plan.VStreamFilter.Rules, tablePlan.SendRule) plan.TargetTables[tableName] = tablePlan plan.TablePlans[tablePlan.SendRule.Match] = tablePlan continue nextTable } } } return plan, nil }
go
func buildReplicatorPlan(filter *binlogdatapb.Filter, tableKeys map[string][]string, copyState map[string]*sqltypes.Result) (*ReplicatorPlan, error) { plan := &ReplicatorPlan{ VStreamFilter: &binlogdatapb.Filter{}, TargetTables: make(map[string]*TablePlan), TablePlans: make(map[string]*TablePlan), tableKeys: tableKeys, } nextTable: for tableName := range tableKeys { lastpk, ok := copyState[tableName] if ok && lastpk == nil { // Don't replicate uncopied tables. continue } for _, rule := range filter.Rules { switch { case strings.HasPrefix(rule.Match, "/"): expr := strings.Trim(rule.Match, "/") result, err := regexp.MatchString(expr, tableName) if err != nil { return nil, err } if !result { continue } sendRule := &binlogdatapb.Rule{ Match: tableName, Filter: buildQuery(tableName, rule.Filter), } plan.VStreamFilter.Rules = append(plan.VStreamFilter.Rules, sendRule) tablePlan := &TablePlan{ TargetName: tableName, SendRule: sendRule, } plan.TargetTables[tableName] = tablePlan plan.TablePlans[tableName] = tablePlan continue nextTable case rule.Match == tableName: tablePlan, err := buildTablePlan(rule, tableKeys, lastpk) if err != nil { return nil, err } if _, ok := plan.TablePlans[tablePlan.SendRule.Match]; ok { continue } plan.VStreamFilter.Rules = append(plan.VStreamFilter.Rules, tablePlan.SendRule) plan.TargetTables[tableName] = tablePlan plan.TablePlans[tablePlan.SendRule.Match] = tablePlan continue nextTable } } } return plan, nil }
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// buildReplicatorPlan builds a ReplicatorPlan for the tables that match the filter. // The filter is matched against the target schema. For every table matched, // a table-specific rule is built to be sent to the source. We don't send the // original rule to the source because it may not match the same tables as the // target. // The TablePlan built is a partial plan. The full plan for a table is built // when we receive field information from events or rows sent by the source. // buildExecutionPlan is the function that builds the full plan.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vttablet/tabletmanager/vreplication/table_plan_builder.go#L84-L137
train
vitessio/vitess
go/vt/throttler/grpcthrottlerserver/grpcthrottlerserver.go
MaxRates
func (s *Server) MaxRates(_ context.Context, request *throttlerdatapb.MaxRatesRequest) (_ *throttlerdatapb.MaxRatesResponse, err error) { defer servenv.HandlePanic("throttler", &err) rates := s.manager.MaxRates() return &throttlerdatapb.MaxRatesResponse{ Rates: rates, }, nil }
go
func (s *Server) MaxRates(_ context.Context, request *throttlerdatapb.MaxRatesRequest) (_ *throttlerdatapb.MaxRatesResponse, err error) { defer servenv.HandlePanic("throttler", &err) rates := s.manager.MaxRates() return &throttlerdatapb.MaxRatesResponse{ Rates: rates, }, nil }
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// MaxRates implements the gRPC server interface. It returns the current max // rate for each throttler of the process.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/throttler/grpcthrottlerserver/grpcthrottlerserver.go#L44-L51
train
vitessio/vitess
go/vt/throttler/grpcthrottlerserver/grpcthrottlerserver.go
SetMaxRate
func (s *Server) SetMaxRate(_ context.Context, request *throttlerdatapb.SetMaxRateRequest) (_ *throttlerdatapb.SetMaxRateResponse, err error) { defer servenv.HandlePanic("throttler", &err) names := s.manager.SetMaxRate(request.Rate) return &throttlerdatapb.SetMaxRateResponse{ Names: names, }, nil }
go
func (s *Server) SetMaxRate(_ context.Context, request *throttlerdatapb.SetMaxRateRequest) (_ *throttlerdatapb.SetMaxRateResponse, err error) { defer servenv.HandlePanic("throttler", &err) names := s.manager.SetMaxRate(request.Rate) return &throttlerdatapb.SetMaxRateResponse{ Names: names, }, nil }
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// SetMaxRate implements the gRPC server interface. It sets the rate on all // throttlers controlled by the manager.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/throttler/grpcthrottlerserver/grpcthrottlerserver.go#L55-L62
train
vitessio/vitess
go/vt/throttler/grpcthrottlerserver/grpcthrottlerserver.go
GetConfiguration
func (s *Server) GetConfiguration(_ context.Context, request *throttlerdatapb.GetConfigurationRequest) (_ *throttlerdatapb.GetConfigurationResponse, err error) { defer servenv.HandlePanic("throttler", &err) configurations, err := s.manager.GetConfiguration(request.ThrottlerName) if err != nil { return nil, err } return &throttlerdatapb.GetConfigurationResponse{ Configurations: configurations, }, nil }
go
func (s *Server) GetConfiguration(_ context.Context, request *throttlerdatapb.GetConfigurationRequest) (_ *throttlerdatapb.GetConfigurationResponse, err error) { defer servenv.HandlePanic("throttler", &err) configurations, err := s.manager.GetConfiguration(request.ThrottlerName) if err != nil { return nil, err } return &throttlerdatapb.GetConfigurationResponse{ Configurations: configurations, }, nil }
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// GetConfiguration implements the gRPC server interface.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/throttler/grpcthrottlerserver/grpcthrottlerserver.go#L65-L75
train
vitessio/vitess
go/vt/throttler/grpcthrottlerserver/grpcthrottlerserver.go
UpdateConfiguration
func (s *Server) UpdateConfiguration(_ context.Context, request *throttlerdatapb.UpdateConfigurationRequest) (_ *throttlerdatapb.UpdateConfigurationResponse, err error) { defer servenv.HandlePanic("throttler", &err) names, err := s.manager.UpdateConfiguration(request.ThrottlerName, request.Configuration, request.CopyZeroValues) if err != nil { return nil, err } return &throttlerdatapb.UpdateConfigurationResponse{ Names: names, }, nil }
go
func (s *Server) UpdateConfiguration(_ context.Context, request *throttlerdatapb.UpdateConfigurationRequest) (_ *throttlerdatapb.UpdateConfigurationResponse, err error) { defer servenv.HandlePanic("throttler", &err) names, err := s.manager.UpdateConfiguration(request.ThrottlerName, request.Configuration, request.CopyZeroValues) if err != nil { return nil, err } return &throttlerdatapb.UpdateConfigurationResponse{ Names: names, }, nil }
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// UpdateConfiguration implements the gRPC server interface.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/throttler/grpcthrottlerserver/grpcthrottlerserver.go#L78-L88
train
vitessio/vitess
go/vt/throttler/grpcthrottlerserver/grpcthrottlerserver.go
ResetConfiguration
func (s *Server) ResetConfiguration(_ context.Context, request *throttlerdatapb.ResetConfigurationRequest) (_ *throttlerdatapb.ResetConfigurationResponse, err error) { defer servenv.HandlePanic("throttler", &err) names, err := s.manager.ResetConfiguration(request.ThrottlerName) if err != nil { return nil, err } return &throttlerdatapb.ResetConfigurationResponse{ Names: names, }, nil }
go
func (s *Server) ResetConfiguration(_ context.Context, request *throttlerdatapb.ResetConfigurationRequest) (_ *throttlerdatapb.ResetConfigurationResponse, err error) { defer servenv.HandlePanic("throttler", &err) names, err := s.manager.ResetConfiguration(request.ThrottlerName) if err != nil { return nil, err } return &throttlerdatapb.ResetConfigurationResponse{ Names: names, }, nil }
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// ResetConfiguration implements the gRPC server interface.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/throttler/grpcthrottlerserver/grpcthrottlerserver.go#L91-L101
train
vitessio/vitess
go/vt/throttler/grpcthrottlerserver/grpcthrottlerserver.go
RegisterServer
func RegisterServer(s *grpc.Server, m throttler.Manager) { throttlerservicepb.RegisterThrottlerServer(s, NewServer(m)) }
go
func RegisterServer(s *grpc.Server, m throttler.Manager) { throttlerservicepb.RegisterThrottlerServer(s, NewServer(m)) }
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// RegisterServer registers a new throttler server instance with the gRPC server.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/throttler/grpcthrottlerserver/grpcthrottlerserver.go#L104-L106
train
vitessio/vitess
go/vt/topo/etcd2topo/error.go
convertError
func convertError(err error, nodePath string) error { if err == nil { return nil } if typeErr, ok := err.(rpctypes.EtcdError); ok { switch typeErr.Code() { case codes.NotFound: return topo.NewError(topo.NoNode, nodePath) case codes.Unavailable, codes.DeadlineExceeded: // The etcd2 client library may return this error: // grpc.Errorf(codes.Unavailable, // "etcdserver: request timed out") which seems to be // misclassified, it should be using // codes.DeadlineExceeded. All timeouts errors // seem to be using the codes.Unavailable // category. So changing all of them to ErrTimeout. // The other reasons for codes.Unavailable are when // etcd master election is failing, so timeout // also sounds reasonable there. return topo.NewError(topo.Timeout, nodePath) } return err } if s, ok := status.FromError(err); ok { // This is a gRPC error. switch s.Code() { case codes.NotFound: return topo.NewError(topo.NoNode, nodePath) case codes.Canceled: return topo.NewError(topo.Interrupted, nodePath) case codes.DeadlineExceeded: return topo.NewError(topo.Timeout, nodePath) default: return err } } switch err { case context.Canceled: return topo.NewError(topo.Interrupted, nodePath) case context.DeadlineExceeded: return topo.NewError(topo.Timeout, nodePath) default: return err } }
go
func convertError(err error, nodePath string) error { if err == nil { return nil } if typeErr, ok := err.(rpctypes.EtcdError); ok { switch typeErr.Code() { case codes.NotFound: return topo.NewError(topo.NoNode, nodePath) case codes.Unavailable, codes.DeadlineExceeded: // The etcd2 client library may return this error: // grpc.Errorf(codes.Unavailable, // "etcdserver: request timed out") which seems to be // misclassified, it should be using // codes.DeadlineExceeded. All timeouts errors // seem to be using the codes.Unavailable // category. So changing all of them to ErrTimeout. // The other reasons for codes.Unavailable are when // etcd master election is failing, so timeout // also sounds reasonable there. return topo.NewError(topo.Timeout, nodePath) } return err } if s, ok := status.FromError(err); ok { // This is a gRPC error. switch s.Code() { case codes.NotFound: return topo.NewError(topo.NoNode, nodePath) case codes.Canceled: return topo.NewError(topo.Interrupted, nodePath) case codes.DeadlineExceeded: return topo.NewError(topo.Timeout, nodePath) default: return err } } switch err { case context.Canceled: return topo.NewError(topo.Interrupted, nodePath) case context.DeadlineExceeded: return topo.NewError(topo.Timeout, nodePath) default: return err } }
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// convertError converts an etcd error into a topo error. All errors // are either application-level errors, or context errors.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/topo/etcd2topo/error.go#L42-L89
train
vitessio/vitess
go/vt/vttablet/tabletserver/tabletenv/config.go
Init
func Init() { switch *streamlog.QueryLogFormat { case streamlog.QueryLogFormatText: case streamlog.QueryLogFormatJSON: default: log.Exitf("Invalid querylog-format value %v: must be either text or json", *streamlog.QueryLogFormat) } if *queryLogHandler != "" { StatsLogger.ServeLogs(*queryLogHandler, streamlog.GetFormatter(StatsLogger)) } if *txLogHandler != "" { TxLogger.ServeLogs(*txLogHandler, streamlog.GetFormatter(TxLogger)) } }
go
func Init() { switch *streamlog.QueryLogFormat { case streamlog.QueryLogFormatText: case streamlog.QueryLogFormatJSON: default: log.Exitf("Invalid querylog-format value %v: must be either text or json", *streamlog.QueryLogFormat) } if *queryLogHandler != "" { StatsLogger.ServeLogs(*queryLogHandler, streamlog.GetFormatter(StatsLogger)) } if *txLogHandler != "" { TxLogger.ServeLogs(*txLogHandler, streamlog.GetFormatter(TxLogger)) } }
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// Init must be called after flag.Parse, and before doing any other operations.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vttablet/tabletserver/tabletenv/config.go#L107-L122
train
vitessio/vitess
go/vt/vttablet/tabletserver/tabletenv/config.go
verifyTransactionLimitConfig
func (c *TabletConfig) verifyTransactionLimitConfig() error { actual, dryRun := c.EnableTransactionLimit, c.EnableTransactionLimitDryRun if actual && dryRun { return errors.New("only one of two flags allowed: -enable_transaction_limit or -enable_transaction_limit_dry_run") } // Skip other checks if this is not enabled if !actual && !dryRun { return nil } var ( byUser = c.TransactionLimitByUsername byPrincipal = c.TransactionLimitByPrincipal byComp = c.TransactionLimitByComponent bySubcomp = c.TransactionLimitBySubcomponent ) if byAny := byUser || byPrincipal || byComp || bySubcomp; !byAny { return errors.New("no user discriminating fields selected for transaction limiter, everyone would share single chunk of transaction pool. Override with at least one of -transaction_limit_by flags set to true") } if v := c.TransactionLimitPerUser; v <= 0 || v >= 1 { return fmt.Errorf("-transaction_limit_per_user should be a fraction within range (0, 1) (specified value: %v)", v) } if limit := int(c.TransactionLimitPerUser * float64(c.TransactionCap)); limit == 0 { return fmt.Errorf("effective transaction limit per user is 0 due to rounding, increase -transaction_limit_per_user") } return nil }
go
func (c *TabletConfig) verifyTransactionLimitConfig() error { actual, dryRun := c.EnableTransactionLimit, c.EnableTransactionLimitDryRun if actual && dryRun { return errors.New("only one of two flags allowed: -enable_transaction_limit or -enable_transaction_limit_dry_run") } // Skip other checks if this is not enabled if !actual && !dryRun { return nil } var ( byUser = c.TransactionLimitByUsername byPrincipal = c.TransactionLimitByPrincipal byComp = c.TransactionLimitByComponent bySubcomp = c.TransactionLimitBySubcomponent ) if byAny := byUser || byPrincipal || byComp || bySubcomp; !byAny { return errors.New("no user discriminating fields selected for transaction limiter, everyone would share single chunk of transaction pool. Override with at least one of -transaction_limit_by flags set to true") } if v := c.TransactionLimitPerUser; v <= 0 || v >= 1 { return fmt.Errorf("-transaction_limit_per_user should be a fraction within range (0, 1) (specified value: %v)", v) } if limit := int(c.TransactionLimitPerUser * float64(c.TransactionCap)); limit == 0 { return fmt.Errorf("effective transaction limit per user is 0 due to rounding, increase -transaction_limit_per_user") } return nil }
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// verifyTransactionLimitConfig checks TransactionLimitConfig for sanity
[ "verifyTransactionLimitConfig", "checks", "TransactionLimitConfig", "for", "sanity" ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vttablet/tabletserver/tabletenv/config.go#L283-L310
train
vitessio/vitess
go/vt/vttablet/tabletserver/tabletenv/config.go
VerifyConfig
func VerifyConfig() error { if err := Config.verifyTransactionLimitConfig(); err != nil { return err } if actual, dryRun := Config.EnableHotRowProtection, Config.EnableHotRowProtectionDryRun; actual && dryRun { return errors.New("only one of two flags allowed: -enable_hot_row_protection or -enable_hot_row_protection_dry_run") } if v := Config.HotRowProtectionMaxQueueSize; v <= 0 { return fmt.Errorf("-hot_row_protection_max_queue_size must be > 0 (specified value: %v)", v) } if v := Config.HotRowProtectionMaxGlobalQueueSize; v <= 0 { return fmt.Errorf("-hot_row_protection_max_global_queue_size must be > 0 (specified value: %v)", v) } if globalSize, size := Config.HotRowProtectionMaxGlobalQueueSize, Config.HotRowProtectionMaxQueueSize; globalSize < size { return fmt.Errorf("global queue size must be >= per row (range) queue size: -hot_row_protection_max_global_queue_size < hot_row_protection_max_queue_size (%v < %v)", globalSize, size) } if v := Config.HotRowProtectionConcurrentTransactions; v <= 0 { return fmt.Errorf("-hot_row_protection_concurrent_transactions must be > 0 (specified value: %v)", v) } return nil }
go
func VerifyConfig() error { if err := Config.verifyTransactionLimitConfig(); err != nil { return err } if actual, dryRun := Config.EnableHotRowProtection, Config.EnableHotRowProtectionDryRun; actual && dryRun { return errors.New("only one of two flags allowed: -enable_hot_row_protection or -enable_hot_row_protection_dry_run") } if v := Config.HotRowProtectionMaxQueueSize; v <= 0 { return fmt.Errorf("-hot_row_protection_max_queue_size must be > 0 (specified value: %v)", v) } if v := Config.HotRowProtectionMaxGlobalQueueSize; v <= 0 { return fmt.Errorf("-hot_row_protection_max_global_queue_size must be > 0 (specified value: %v)", v) } if globalSize, size := Config.HotRowProtectionMaxGlobalQueueSize, Config.HotRowProtectionMaxQueueSize; globalSize < size { return fmt.Errorf("global queue size must be >= per row (range) queue size: -hot_row_protection_max_global_queue_size < hot_row_protection_max_queue_size (%v < %v)", globalSize, size) } if v := Config.HotRowProtectionConcurrentTransactions; v <= 0 { return fmt.Errorf("-hot_row_protection_concurrent_transactions must be > 0 (specified value: %v)", v) } return nil }
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// VerifyConfig checks "Config" for contradicting flags.
[ "VerifyConfig", "checks", "Config", "for", "contradicting", "flags", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vttablet/tabletserver/tabletenv/config.go#L317-L337
train
vitessio/vitess
go/mysql/mysql56_gtid_set.go
SIDs
func (set Mysql56GTIDSet) SIDs() []SID { sids := make([]SID, 0, len(set)) for sid := range set { sids = append(sids, sid) } sort.Sort(sidList(sids)) return sids }
go
func (set Mysql56GTIDSet) SIDs() []SID { sids := make([]SID, 0, len(set)) for sid := range set { sids = append(sids, sid) } sort.Sort(sidList(sids)) return sids }
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// SIDs returns a sorted list of SIDs in the set.
[ "SIDs", "returns", "a", "sorted", "list", "of", "SIDs", "in", "the", "set", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/mysql/mysql56_gtid_set.go#L130-L137
train
vitessio/vitess
go/mysql/mysql56_gtid_set.go
String
func (set Mysql56GTIDSet) String() string { buf := &bytes.Buffer{} for i, sid := range set.SIDs() { if i != 0 { buf.WriteByte(',') } buf.WriteString(sid.String()) for _, interval := range set[sid] { buf.WriteByte(':') buf.WriteString(strconv.FormatInt(interval.start, 10)) if interval.end != interval.start { buf.WriteByte('-') buf.WriteString(strconv.FormatInt(interval.end, 10)) } } } return buf.String() }
go
func (set Mysql56GTIDSet) String() string { buf := &bytes.Buffer{} for i, sid := range set.SIDs() { if i != 0 { buf.WriteByte(',') } buf.WriteString(sid.String()) for _, interval := range set[sid] { buf.WriteByte(':') buf.WriteString(strconv.FormatInt(interval.start, 10)) if interval.end != interval.start { buf.WriteByte('-') buf.WriteString(strconv.FormatInt(interval.end, 10)) } } } return buf.String() }
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// String implements GTIDSet.
[ "String", "implements", "GTIDSet", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/mysql/mysql56_gtid_set.go#L151-L172
train
vitessio/vitess
go/mysql/mysql56_gtid_set.go
ContainsGTID
func (set Mysql56GTIDSet) ContainsGTID(gtid GTID) bool { gtid56, ok := gtid.(Mysql56GTID) if !ok { return false } for _, iv := range set[gtid56.Server] { if iv.start > gtid56.Sequence { // We assume intervals are sorted, so we can skip the rest. return false } if gtid56.Sequence <= iv.end { // Now we know that: start <= Sequence <= end. return true } } // Server wasn't in the set, or no interval contained gtid. return false }
go
func (set Mysql56GTIDSet) ContainsGTID(gtid GTID) bool { gtid56, ok := gtid.(Mysql56GTID) if !ok { return false } for _, iv := range set[gtid56.Server] { if iv.start > gtid56.Sequence { // We assume intervals are sorted, so we can skip the rest. return false } if gtid56.Sequence <= iv.end { // Now we know that: start <= Sequence <= end. return true } } // Server wasn't in the set, or no interval contained gtid. return false }
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// ContainsGTID implements GTIDSet.
[ "ContainsGTID", "implements", "GTIDSet", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/mysql/mysql56_gtid_set.go#L178-L196
train
vitessio/vitess
go/mysql/mysql56_gtid_set.go
Contains
func (set Mysql56GTIDSet) Contains(other GTIDSet) bool { other56, ok := other.(Mysql56GTIDSet) if !ok { return false } // Check each SID in the other set. for sid, otherIntervals := range other56 { i := 0 intervals := set[sid] count := len(intervals) // Check each interval for this SID in the other set. for _, iv := range otherIntervals { // Check that interval against each of our intervals. // Intervals are monotonically increasing, // so we don't need to reset the index each time. for { if i >= count { // We ran out of intervals to check against. return false } if intervals[i].contains(iv) { // Yes it's covered. Go on to the next one. break } i++ } } } // No uncovered intervals were found. return true }
go
func (set Mysql56GTIDSet) Contains(other GTIDSet) bool { other56, ok := other.(Mysql56GTIDSet) if !ok { return false } // Check each SID in the other set. for sid, otherIntervals := range other56 { i := 0 intervals := set[sid] count := len(intervals) // Check each interval for this SID in the other set. for _, iv := range otherIntervals { // Check that interval against each of our intervals. // Intervals are monotonically increasing, // so we don't need to reset the index each time. for { if i >= count { // We ran out of intervals to check against. return false } if intervals[i].contains(iv) { // Yes it's covered. Go on to the next one. break } i++ } } } // No uncovered intervals were found. return true }
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// Contains implements GTIDSet.
[ "Contains", "implements", "GTIDSet", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/mysql/mysql56_gtid_set.go#L199-L232
train
vitessio/vitess
go/mysql/mysql56_gtid_set.go
Equal
func (set Mysql56GTIDSet) Equal(other GTIDSet) bool { other56, ok := other.(Mysql56GTIDSet) if !ok { return false } // Check for same number of SIDs. if len(set) != len(other56) { return false } // Compare each SID. for sid, intervals := range set { otherIntervals := other56[sid] // Check for same number of intervals. if len(intervals) != len(otherIntervals) { return false } // Compare each interval. // Since intervals are sorted, they have to be in the same order. for i, iv := range intervals { if iv != otherIntervals[i] { return false } } } // No discrepancies were found. return true }
go
func (set Mysql56GTIDSet) Equal(other GTIDSet) bool { other56, ok := other.(Mysql56GTIDSet) if !ok { return false } // Check for same number of SIDs. if len(set) != len(other56) { return false } // Compare each SID. for sid, intervals := range set { otherIntervals := other56[sid] // Check for same number of intervals. if len(intervals) != len(otherIntervals) { return false } // Compare each interval. // Since intervals are sorted, they have to be in the same order. for i, iv := range intervals { if iv != otherIntervals[i] { return false } } } // No discrepancies were found. return true }
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// Equal implements GTIDSet.
[ "Equal", "implements", "GTIDSet", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/mysql/mysql56_gtid_set.go#L235-L266
train
vitessio/vitess
go/mysql/mysql56_gtid_set.go
AddGTID
func (set Mysql56GTIDSet) AddGTID(gtid GTID) GTIDSet { gtid56, ok := gtid.(Mysql56GTID) if !ok { return set } // If it's already in the set, we can return the same instance. // This is safe because GTIDSets are immutable. if set.ContainsGTID(gtid) { return set } // Make a copy and add the new GTID in the proper place. // This function is not supposed to modify the original set. newSet := make(Mysql56GTIDSet) added := false for sid, intervals := range set { newIntervals := make([]interval, 0, len(intervals)) if sid == gtid56.Server { // Look for the right place to add this GTID. for _, iv := range intervals { if !added { switch { case gtid56.Sequence == iv.start-1: // Expand the interval at the beginning. iv.start = gtid56.Sequence added = true case gtid56.Sequence == iv.end+1: // Expand the interval at the end. iv.end = gtid56.Sequence added = true case gtid56.Sequence < iv.start-1: // The next interval is beyond the new GTID, but it can't // be expanded, so we have to insert a new interval. newIntervals = append(newIntervals, interval{start: gtid56.Sequence, end: gtid56.Sequence}) added = true } } // Check if this interval can be merged with the previous one. count := len(newIntervals) if count != 0 && iv.start == newIntervals[count-1].end+1 { // Merge instead of appending. newIntervals[count-1].end = iv.end } else { // Can't be merged. newIntervals = append(newIntervals, iv) } } } else { // Just copy everything. newIntervals = append(newIntervals, intervals...) } newSet[sid] = newIntervals } if !added { // There wasn't any place to insert the new GTID, so just append it // as a new interval. newSet[gtid56.Server] = append(newSet[gtid56.Server], interval{start: gtid56.Sequence, end: gtid56.Sequence}) } return newSet }
go
func (set Mysql56GTIDSet) AddGTID(gtid GTID) GTIDSet { gtid56, ok := gtid.(Mysql56GTID) if !ok { return set } // If it's already in the set, we can return the same instance. // This is safe because GTIDSets are immutable. if set.ContainsGTID(gtid) { return set } // Make a copy and add the new GTID in the proper place. // This function is not supposed to modify the original set. newSet := make(Mysql56GTIDSet) added := false for sid, intervals := range set { newIntervals := make([]interval, 0, len(intervals)) if sid == gtid56.Server { // Look for the right place to add this GTID. for _, iv := range intervals { if !added { switch { case gtid56.Sequence == iv.start-1: // Expand the interval at the beginning. iv.start = gtid56.Sequence added = true case gtid56.Sequence == iv.end+1: // Expand the interval at the end. iv.end = gtid56.Sequence added = true case gtid56.Sequence < iv.start-1: // The next interval is beyond the new GTID, but it can't // be expanded, so we have to insert a new interval. newIntervals = append(newIntervals, interval{start: gtid56.Sequence, end: gtid56.Sequence}) added = true } } // Check if this interval can be merged with the previous one. count := len(newIntervals) if count != 0 && iv.start == newIntervals[count-1].end+1 { // Merge instead of appending. newIntervals[count-1].end = iv.end } else { // Can't be merged. newIntervals = append(newIntervals, iv) } } } else { // Just copy everything. newIntervals = append(newIntervals, intervals...) } newSet[sid] = newIntervals } if !added { // There wasn't any place to insert the new GTID, so just append it // as a new interval. newSet[gtid56.Server] = append(newSet[gtid56.Server], interval{start: gtid56.Sequence, end: gtid56.Sequence}) } return newSet }
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// AddGTID implements GTIDSet.
[ "AddGTID", "implements", "GTIDSet", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/mysql/mysql56_gtid_set.go#L269-L335
train
vitessio/vitess
go/vt/servenv/grpc_server.go
isGRPCEnabled
func isGRPCEnabled() bool { if GRPCPort != nil && *GRPCPort != 0 { return true } if SocketFile != nil && *SocketFile != "" { return true } return false }
go
func isGRPCEnabled() bool { if GRPCPort != nil && *GRPCPort != 0 { return true } if SocketFile != nil && *SocketFile != "" { return true } return false }
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// isGRPCEnabled returns true if gRPC server is set
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/servenv/grpc_server.go#L100-L110
train
vitessio/vitess
go/vt/servenv/grpc_server.go
createGRPCServer
func createGRPCServer() { // skip if not registered if !isGRPCEnabled() { log.Infof("Skipping gRPC server creation") return } grpccommon.EnableTracingOpt() var opts []grpc.ServerOption if GRPCPort != nil && *GRPCCert != "" && *GRPCKey != "" { config, err := vttls.ServerConfig(*GRPCCert, *GRPCKey, *GRPCCA) if err != nil { log.Exitf("Failed to log gRPC cert/key/ca: %v", err) } // create the creds server options creds := credentials.NewTLS(config) opts = []grpc.ServerOption{grpc.Creds(creds)} } // Override the default max message size for both send and receive // (which is 4 MiB in gRPC 1.0.0). // Large messages can occur when users try to insert or fetch very big // rows. If they hit the limit, they'll see the following error: // grpc: received message length XXXXXXX exceeding the max size 4194304 // Note: For gRPC 1.0.0 it's sufficient to set the limit on the server only // because it's not enforced on the client side. log.Infof("Setting grpc max message size to %d", *grpccommon.MaxMessageSize) opts = append(opts, grpc.MaxRecvMsgSize(*grpccommon.MaxMessageSize)) opts = append(opts, grpc.MaxSendMsgSize(*grpccommon.MaxMessageSize)) if *GRPCInitialConnWindowSize != 0 { log.Infof("Setting grpc server initial conn window size to %d", int32(*GRPCInitialConnWindowSize)) opts = append(opts, grpc.InitialConnWindowSize(int32(*GRPCInitialConnWindowSize))) } if *GRPCInitialWindowSize != 0 { log.Infof("Setting grpc server initial window size to %d", int32(*GRPCInitialWindowSize)) opts = append(opts, grpc.InitialWindowSize(int32(*GRPCInitialWindowSize))) } ep := keepalive.EnforcementPolicy{ MinTime: *GRPCKeepAliveEnforcementPolicyMinTime, PermitWithoutStream: *GRPCKeepAliveEnforcementPolicyPermitWithoutStream, } opts = append(opts, grpc.KeepaliveEnforcementPolicy(ep)) if GRPCMaxConnectionAge != nil { ka := keepalive.ServerParameters{ MaxConnectionAge: *GRPCMaxConnectionAge, } if GRPCMaxConnectionAgeGrace != nil { ka.MaxConnectionAgeGrace = *GRPCMaxConnectionAgeGrace } opts = append(opts, grpc.KeepaliveParams(ka)) } opts = append(opts, interceptors()...) GRPCServer = grpc.NewServer(opts...) }
go
func createGRPCServer() { // skip if not registered if !isGRPCEnabled() { log.Infof("Skipping gRPC server creation") return } grpccommon.EnableTracingOpt() var opts []grpc.ServerOption if GRPCPort != nil && *GRPCCert != "" && *GRPCKey != "" { config, err := vttls.ServerConfig(*GRPCCert, *GRPCKey, *GRPCCA) if err != nil { log.Exitf("Failed to log gRPC cert/key/ca: %v", err) } // create the creds server options creds := credentials.NewTLS(config) opts = []grpc.ServerOption{grpc.Creds(creds)} } // Override the default max message size for both send and receive // (which is 4 MiB in gRPC 1.0.0). // Large messages can occur when users try to insert or fetch very big // rows. If they hit the limit, they'll see the following error: // grpc: received message length XXXXXXX exceeding the max size 4194304 // Note: For gRPC 1.0.0 it's sufficient to set the limit on the server only // because it's not enforced on the client side. log.Infof("Setting grpc max message size to %d", *grpccommon.MaxMessageSize) opts = append(opts, grpc.MaxRecvMsgSize(*grpccommon.MaxMessageSize)) opts = append(opts, grpc.MaxSendMsgSize(*grpccommon.MaxMessageSize)) if *GRPCInitialConnWindowSize != 0 { log.Infof("Setting grpc server initial conn window size to %d", int32(*GRPCInitialConnWindowSize)) opts = append(opts, grpc.InitialConnWindowSize(int32(*GRPCInitialConnWindowSize))) } if *GRPCInitialWindowSize != 0 { log.Infof("Setting grpc server initial window size to %d", int32(*GRPCInitialWindowSize)) opts = append(opts, grpc.InitialWindowSize(int32(*GRPCInitialWindowSize))) } ep := keepalive.EnforcementPolicy{ MinTime: *GRPCKeepAliveEnforcementPolicyMinTime, PermitWithoutStream: *GRPCKeepAliveEnforcementPolicyPermitWithoutStream, } opts = append(opts, grpc.KeepaliveEnforcementPolicy(ep)) if GRPCMaxConnectionAge != nil { ka := keepalive.ServerParameters{ MaxConnectionAge: *GRPCMaxConnectionAge, } if GRPCMaxConnectionAgeGrace != nil { ka.MaxConnectionAgeGrace = *GRPCMaxConnectionAgeGrace } opts = append(opts, grpc.KeepaliveParams(ka)) } opts = append(opts, interceptors()...) GRPCServer = grpc.NewServer(opts...) }
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// createGRPCServer create the gRPC server we will be using. // It has to be called after flags are parsed, but before // services register themselves.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/servenv/grpc_server.go#L115-L175
train
vitessio/vitess
go/vt/servenv/grpc_server.go
interceptors
func interceptors() []grpc.ServerOption { interceptors := &serverInterceptorBuilder{} if *GRPCAuth != "" { log.Infof("enabling auth plugin %v", *GRPCAuth) pluginInitializer := GetAuthenticator(*GRPCAuth) authPluginImpl, err := pluginInitializer() if err != nil { log.Fatalf("Failed to load auth plugin: %v", err) } authPlugin = authPluginImpl interceptors.Add(authenticatingStreamInterceptor, authenticatingUnaryInterceptor) } if *grpccommon.EnableGRPCPrometheus { interceptors.Add(grpc_prometheus.StreamServerInterceptor, grpc_prometheus.UnaryServerInterceptor) } trace.AddGrpcServerOptions(interceptors.Add) return interceptors.Build() }
go
func interceptors() []grpc.ServerOption { interceptors := &serverInterceptorBuilder{} if *GRPCAuth != "" { log.Infof("enabling auth plugin %v", *GRPCAuth) pluginInitializer := GetAuthenticator(*GRPCAuth) authPluginImpl, err := pluginInitializer() if err != nil { log.Fatalf("Failed to load auth plugin: %v", err) } authPlugin = authPluginImpl interceptors.Add(authenticatingStreamInterceptor, authenticatingUnaryInterceptor) } if *grpccommon.EnableGRPCPrometheus { interceptors.Add(grpc_prometheus.StreamServerInterceptor, grpc_prometheus.UnaryServerInterceptor) } trace.AddGrpcServerOptions(interceptors.Add) return interceptors.Build() }
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// We can only set a ServerInterceptor once, so we chain multiple interceptors into one
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/servenv/grpc_server.go#L178-L199
train
vitessio/vitess
go/vt/servenv/grpc_server.go
WrapServerStream
func WrapServerStream(stream grpc.ServerStream) *WrappedServerStream { if existing, ok := stream.(*WrappedServerStream); ok { return existing } return &WrappedServerStream{ServerStream: stream, WrappedContext: stream.Context()} }
go
func WrapServerStream(stream grpc.ServerStream) *WrappedServerStream { if existing, ok := stream.(*WrappedServerStream); ok { return existing } return &WrappedServerStream{ServerStream: stream, WrappedContext: stream.Context()} }
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// WrapServerStream returns a ServerStream that has the ability to overwrite context.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/servenv/grpc_server.go#L279-L284
train
vitessio/vitess
go/vt/servenv/grpc_server.go
Add
func (collector *serverInterceptorBuilder) Add(s grpc.StreamServerInterceptor, u grpc.UnaryServerInterceptor) { collector.streamInterceptors = append(collector.streamInterceptors, s) collector.unaryInterceptors = append(collector.unaryInterceptors, u) }
go
func (collector *serverInterceptorBuilder) Add(s grpc.StreamServerInterceptor, u grpc.UnaryServerInterceptor) { collector.streamInterceptors = append(collector.streamInterceptors, s) collector.unaryInterceptors = append(collector.unaryInterceptors, u) }
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// Add adds interceptors to the builder
[ "Add", "adds", "interceptors", "to", "the", "builder" ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/servenv/grpc_server.go#L293-L296
train
vitessio/vitess
go/vt/servenv/grpc_server.go
AddUnary
func (collector *serverInterceptorBuilder) AddUnary(u grpc.UnaryServerInterceptor) { collector.unaryInterceptors = append(collector.unaryInterceptors, u) }
go
func (collector *serverInterceptorBuilder) AddUnary(u grpc.UnaryServerInterceptor) { collector.unaryInterceptors = append(collector.unaryInterceptors, u) }
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// AddUnary adds a single unary interceptor to the builder
[ "AddUnary", "adds", "a", "single", "unary", "interceptor", "to", "the", "builder" ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/servenv/grpc_server.go#L299-L301
train
vitessio/vitess
go/vt/workflow/sleep_workflow.go
Run
func (sw *SleepWorkflow) Run(ctx context.Context, manager *Manager, wi *topo.WorkflowInfo) error { // Save all values, create a UI Node. sw.mu.Lock() sw.manager = manager sw.wi = wi sw.node.Listener = sw sw.node.Display = NodeDisplayDeterminate sw.node.Actions = []*Action{ { Name: pauseAction, State: ActionStateEnabled, Style: ActionStyleNormal, }, { Name: resumeAction, State: ActionStateDisabled, Style: ActionStyleNormal, }, } sw.uiUpdateLocked() sw.node.BroadcastChanges(false /* updateChildren */) sw.mu.Unlock() for { sw.mu.Lock() data := *sw.data sw.mu.Unlock() if data.Slept == data.Duration { break } select { case <-ctx.Done(): return ctx.Err() case <-time.After(time.Second): if !data.Paused { sw.mu.Lock() sw.data.Slept++ // UI update every second. sw.uiUpdateLocked() sw.node.BroadcastChanges(false /* updateChildren */) // Checkpoint every 5 seconds. if sw.data.Slept%5 == 0 { if err := sw.checkpointLocked(ctx); err != nil { sw.mu.Unlock() return err } } sw.mu.Unlock() } } } return nil }
go
func (sw *SleepWorkflow) Run(ctx context.Context, manager *Manager, wi *topo.WorkflowInfo) error { // Save all values, create a UI Node. sw.mu.Lock() sw.manager = manager sw.wi = wi sw.node.Listener = sw sw.node.Display = NodeDisplayDeterminate sw.node.Actions = []*Action{ { Name: pauseAction, State: ActionStateEnabled, Style: ActionStyleNormal, }, { Name: resumeAction, State: ActionStateDisabled, Style: ActionStyleNormal, }, } sw.uiUpdateLocked() sw.node.BroadcastChanges(false /* updateChildren */) sw.mu.Unlock() for { sw.mu.Lock() data := *sw.data sw.mu.Unlock() if data.Slept == data.Duration { break } select { case <-ctx.Done(): return ctx.Err() case <-time.After(time.Second): if !data.Paused { sw.mu.Lock() sw.data.Slept++ // UI update every second. sw.uiUpdateLocked() sw.node.BroadcastChanges(false /* updateChildren */) // Checkpoint every 5 seconds. if sw.data.Slept%5 == 0 { if err := sw.checkpointLocked(ctx); err != nil { sw.mu.Unlock() return err } } sw.mu.Unlock() } } } return nil }
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// Run is part of the workflow.Workflow interface. // It updates the UI every second, and checkpoints every 5 seconds.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/workflow/sleep_workflow.go#L83-L139
train
vitessio/vitess
go/vt/workflow/sleep_workflow.go
checkpointLocked
func (sw *SleepWorkflow) checkpointLocked(ctx context.Context) error { var err error sw.wi.Data, err = json.Marshal(sw.data) if err != nil { return err } err = sw.manager.TopoServer().SaveWorkflow(ctx, sw.wi) if err != nil { sw.logger.Errorf("SaveWorkflow failed: %v", err) } else { sw.logger.Infof("SaveWorkflow successful") } return err }
go
func (sw *SleepWorkflow) checkpointLocked(ctx context.Context) error { var err error sw.wi.Data, err = json.Marshal(sw.data) if err != nil { return err } err = sw.manager.TopoServer().SaveWorkflow(ctx, sw.wi) if err != nil { sw.logger.Errorf("SaveWorkflow failed: %v", err) } else { sw.logger.Infof("SaveWorkflow successful") } return err }
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// checkpointLocked saves a checkpoint in topo server. // Needs to be called with the lock.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/workflow/sleep_workflow.go#L190-L203
train
vitessio/vitess
go/vt/vtgate/vschema_stats.go
NewVSchemaStats
func NewVSchemaStats(vschema *vindexes.VSchema, errorMessage string) *VSchemaStats { stats := &VSchemaStats{ Error: errorMessage, Keyspaces: make([]*VSchemaKeyspaceStats, 0, len(vschema.Keyspaces)), } for n, k := range vschema.Keyspaces { s := &VSchemaKeyspaceStats{ Keyspace: n, } if k.Keyspace != nil { s.Sharded = k.Keyspace.Sharded s.TableCount += len(k.Tables) for _, t := range k.Tables { s.VindexCount += len(t.ColumnVindexes) + len(t.Ordered) + len(t.Owned) } } if k.Error != nil { s.Error = k.Error.Error() } stats.Keyspaces = append(stats.Keyspaces, s) } sort.Slice(stats.Keyspaces, func(i, j int) bool { return stats.Keyspaces[i].Keyspace < stats.Keyspaces[j].Keyspace }) return stats }
go
func NewVSchemaStats(vschema *vindexes.VSchema, errorMessage string) *VSchemaStats { stats := &VSchemaStats{ Error: errorMessage, Keyspaces: make([]*VSchemaKeyspaceStats, 0, len(vschema.Keyspaces)), } for n, k := range vschema.Keyspaces { s := &VSchemaKeyspaceStats{ Keyspace: n, } if k.Keyspace != nil { s.Sharded = k.Keyspace.Sharded s.TableCount += len(k.Tables) for _, t := range k.Tables { s.VindexCount += len(t.ColumnVindexes) + len(t.Ordered) + len(t.Owned) } } if k.Error != nil { s.Error = k.Error.Error() } stats.Keyspaces = append(stats.Keyspaces, s) } sort.Slice(stats.Keyspaces, func(i, j int) bool { return stats.Keyspaces[i].Keyspace < stats.Keyspaces[j].Keyspace }) return stats }
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// NewVSchemaStats returns a new VSchemaStats from a VSchema.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vtgate/vschema_stats.go#L44-L68
train
vitessio/vitess
go/vt/vtgate/engine/ordered_aggregate.go
MarshalJSON
func (code AggregateOpcode) MarshalJSON() ([]byte, error) { return ([]byte)(fmt.Sprintf("\"%s\"", code.String())), nil }
go
func (code AggregateOpcode) MarshalJSON() ([]byte, error) { return ([]byte)(fmt.Sprintf("\"%s\"", code.String())), nil }
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// MarshalJSON serializes the AggregateOpcode as a JSON string. // It's used for testing and diagnostics.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vtgate/engine/ordered_aggregate.go#L90-L92
train
vitessio/vitess
go/vt/vtgate/engine/ordered_aggregate.go
Execute
func (oa *OrderedAggregate) Execute(vcursor VCursor, bindVars map[string]*querypb.BindVariable, wantfields bool) (*sqltypes.Result, error) { qr, err := oa.execute(vcursor, bindVars, wantfields) if err != nil { return nil, err } return qr.Truncate(oa.TruncateColumnCount), nil }
go
func (oa *OrderedAggregate) Execute(vcursor VCursor, bindVars map[string]*querypb.BindVariable, wantfields bool) (*sqltypes.Result, error) { qr, err := oa.execute(vcursor, bindVars, wantfields) if err != nil { return nil, err } return qr.Truncate(oa.TruncateColumnCount), nil }
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// Execute is a Primitive function.
[ "Execute", "is", "a", "Primitive", "function", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vtgate/engine/ordered_aggregate.go#L100-L106
train
vitessio/vitess
go/vt/vtgate/engine/ordered_aggregate.go
StreamExecute
func (oa *OrderedAggregate) StreamExecute(vcursor VCursor, bindVars map[string]*querypb.BindVariable, wantfields bool, callback func(*sqltypes.Result) error) error { var current []sqltypes.Value var fields []*querypb.Field cb := func(qr *sqltypes.Result) error { return callback(qr.Truncate(oa.TruncateColumnCount)) } err := oa.Input.StreamExecute(vcursor, bindVars, wantfields, func(qr *sqltypes.Result) error { if len(qr.Fields) != 0 { fields = qr.Fields if err := cb(&sqltypes.Result{Fields: fields}); err != nil { return err } } // This code is similar to the one in Execute. for _, row := range qr.Rows { if current == nil { current = row continue } equal, err := oa.keysEqual(current, row) if err != nil { return err } if equal { current, err = oa.merge(fields, current, row) if err != nil { return err } continue } if err := cb(&sqltypes.Result{Rows: [][]sqltypes.Value{current}}); err != nil { return err } current = row } return nil }) if err != nil { return err } if current != nil { if err := cb(&sqltypes.Result{Rows: [][]sqltypes.Value{current}}); err != nil { return err } } return nil }
go
func (oa *OrderedAggregate) StreamExecute(vcursor VCursor, bindVars map[string]*querypb.BindVariable, wantfields bool, callback func(*sqltypes.Result) error) error { var current []sqltypes.Value var fields []*querypb.Field cb := func(qr *sqltypes.Result) error { return callback(qr.Truncate(oa.TruncateColumnCount)) } err := oa.Input.StreamExecute(vcursor, bindVars, wantfields, func(qr *sqltypes.Result) error { if len(qr.Fields) != 0 { fields = qr.Fields if err := cb(&sqltypes.Result{Fields: fields}); err != nil { return err } } // This code is similar to the one in Execute. for _, row := range qr.Rows { if current == nil { current = row continue } equal, err := oa.keysEqual(current, row) if err != nil { return err } if equal { current, err = oa.merge(fields, current, row) if err != nil { return err } continue } if err := cb(&sqltypes.Result{Rows: [][]sqltypes.Value{current}}); err != nil { return err } current = row } return nil }) if err != nil { return err } if current != nil { if err := cb(&sqltypes.Result{Rows: [][]sqltypes.Value{current}}); err != nil { return err } } return nil }
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// StreamExecute is a Primitive function.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vtgate/engine/ordered_aggregate.go#L149-L200
train
vitessio/vitess
go/vt/vtgate/engine/ordered_aggregate.go
GetFields
func (oa *OrderedAggregate) GetFields(vcursor VCursor, bindVars map[string]*querypb.BindVariable) (*sqltypes.Result, error) { qr, err := oa.Input.GetFields(vcursor, bindVars) if err != nil { return nil, err } return qr.Truncate(oa.TruncateColumnCount), nil }
go
func (oa *OrderedAggregate) GetFields(vcursor VCursor, bindVars map[string]*querypb.BindVariable) (*sqltypes.Result, error) { qr, err := oa.Input.GetFields(vcursor, bindVars) if err != nil { return nil, err } return qr.Truncate(oa.TruncateColumnCount), nil }
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// GetFields is a Primitive function.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vtgate/engine/ordered_aggregate.go#L203-L209
train
vitessio/vitess
go/vt/vtgate/vindexes/binary.go
NewBinary
func NewBinary(name string, _ map[string]string) (Vindex, error) { return &Binary{name: name}, nil }
go
func NewBinary(name string, _ map[string]string) (Vindex, error) { return &Binary{name: name}, nil }
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// NewBinary creates a new Binary.
[ "NewBinary", "creates", "a", "new", "Binary", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vtgate/vindexes/binary.go#L38-L40
train
vitessio/vitess
go/vt/topo/topoproto/srvkeyspace.go
SrvKeyspaceGetPartition
func SrvKeyspaceGetPartition(sk *topodatapb.SrvKeyspace, tabletType topodatapb.TabletType) *topodatapb.SrvKeyspace_KeyspacePartition { for _, p := range sk.Partitions { if p.ServedType == tabletType { return p } } return nil }
go
func SrvKeyspaceGetPartition(sk *topodatapb.SrvKeyspace, tabletType topodatapb.TabletType) *topodatapb.SrvKeyspace_KeyspacePartition { for _, p := range sk.Partitions { if p.ServedType == tabletType { return p } } return nil }
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// SrvKeyspaceGetPartition returns a Partition for the given tablet type, // or nil if it's not there.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/topo/topoproto/srvkeyspace.go#L53-L60
train
vitessio/vitess
go/vt/sqlparser/normalizer.go
Normalize
func Normalize(stmt Statement, bindVars map[string]*querypb.BindVariable, prefix string) { nz := newNormalizer(stmt, bindVars, prefix) _ = Walk(nz.WalkStatement, stmt) }
go
func Normalize(stmt Statement, bindVars map[string]*querypb.BindVariable, prefix string) { nz := newNormalizer(stmt, bindVars, prefix) _ = Walk(nz.WalkStatement, stmt) }
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// Normalize changes the statement to use bind values, and // updates the bind vars to those values. The supplied prefix // is used to generate the bind var names. The function ensures // that there are no collisions with existing bind vars. // Within Select constructs, bind vars are deduped. This allows // us to identify vindex equality. Otherwise, every value is // treated as distinct.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/sqlparser/normalizer.go#L34-L37
train
vitessio/vitess
go/vt/sqlparser/normalizer.go
WalkSelect
func (nz *normalizer) WalkSelect(node SQLNode) (bool, error) { switch node := node.(type) { case *SQLVal: nz.convertSQLValDedup(node) case *ComparisonExpr: nz.convertComparison(node) case *ColName, TableName: // Common node types that never contain SQLVals or ListArgs but create a lot of object // allocations. return false, nil case OrderBy, GroupBy: // do not make a bind var for order by column_position return false, nil } return true, nil }
go
func (nz *normalizer) WalkSelect(node SQLNode) (bool, error) { switch node := node.(type) { case *SQLVal: nz.convertSQLValDedup(node) case *ComparisonExpr: nz.convertComparison(node) case *ColName, TableName: // Common node types that never contain SQLVals or ListArgs but create a lot of object // allocations. return false, nil case OrderBy, GroupBy: // do not make a bind var for order by column_position return false, nil } return true, nil }
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// WalkSelect normalizes the AST in Select mode.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/sqlparser/normalizer.go#L81-L96
train
vitessio/vitess
go/vt/sqlparser/normalizer.go
convertSQLVal
func (nz *normalizer) convertSQLVal(node *SQLVal) { bval := nz.sqlToBindvar(node) if bval == nil { return } bvname := nz.newName() nz.bindVars[bvname] = bval node.Type = ValArg node.Val = append([]byte(":"), bvname...) }
go
func (nz *normalizer) convertSQLVal(node *SQLVal) { bval := nz.sqlToBindvar(node) if bval == nil { return } bvname := nz.newName() nz.bindVars[bvname] = bval node.Type = ValArg node.Val = append([]byte(":"), bvname...) }
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// convertSQLVal converts an SQLVal without the dedup.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/sqlparser/normalizer.go#L138-L149
train
vitessio/vitess
go/vt/sqlparser/normalizer.go
convertComparison
func (nz *normalizer) convertComparison(node *ComparisonExpr) { if node.Operator != InStr && node.Operator != NotInStr { return } tupleVals, ok := node.Right.(ValTuple) if !ok { return } // The RHS is a tuple of values. // Make a list bindvar. bvals := &querypb.BindVariable{ Type: querypb.Type_TUPLE, } for _, val := range tupleVals { bval := nz.sqlToBindvar(val) if bval == nil { return } bvals.Values = append(bvals.Values, &querypb.Value{ Type: bval.Type, Value: bval.Value, }) } bvname := nz.newName() nz.bindVars[bvname] = bvals // Modify RHS to be a list bindvar. node.Right = ListArg(append([]byte("::"), bvname...)) }
go
func (nz *normalizer) convertComparison(node *ComparisonExpr) { if node.Operator != InStr && node.Operator != NotInStr { return } tupleVals, ok := node.Right.(ValTuple) if !ok { return } // The RHS is a tuple of values. // Make a list bindvar. bvals := &querypb.BindVariable{ Type: querypb.Type_TUPLE, } for _, val := range tupleVals { bval := nz.sqlToBindvar(val) if bval == nil { return } bvals.Values = append(bvals.Values, &querypb.Value{ Type: bval.Type, Value: bval.Value, }) } bvname := nz.newName() nz.bindVars[bvname] = bvals // Modify RHS to be a list bindvar. node.Right = ListArg(append([]byte("::"), bvname...)) }
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// convertComparison attempts to convert IN clauses to // use the list bind var construct. If it fails, it returns // with no change made. The walk function will then continue // and iterate on converting each individual value into separate // bind vars.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/sqlparser/normalizer.go#L156-L183
train
vitessio/vitess
go/mysql/auth_server_none.go
ValidateHash
func (a *AuthServerNone) ValidateHash(salt []byte, user string, authResponse []byte, remoteAddr net.Addr) (Getter, error) { return &NoneGetter{}, nil }
go
func (a *AuthServerNone) ValidateHash(salt []byte, user string, authResponse []byte, remoteAddr net.Addr) (Getter, error) { return &NoneGetter{}, nil }
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// ValidateHash validates hash
[ "ValidateHash", "validates", "hash" ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/mysql/auth_server_none.go#L44-L46
train
vitessio/vitess
go/mysql/auth_server_none.go
Negotiate
func (a *AuthServerNone) Negotiate(c *Conn, user string, remotAddr net.Addr) (Getter, error) { panic("Negotiate should not be called as AuthMethod returned mysql_native_password") }
go
func (a *AuthServerNone) Negotiate(c *Conn, user string, remotAddr net.Addr) (Getter, error) { panic("Negotiate should not be called as AuthMethod returned mysql_native_password") }
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// Negotiate is part of the AuthServer interface. // It will never be called.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/mysql/auth_server_none.go#L50-L52
train
vitessio/vitess
go/vt/wrangler/split.go
SetSourceShards
func (wr *Wrangler) SetSourceShards(ctx context.Context, keyspace, shard string, sources []*topodatapb.TabletAlias, tables []string) error { // Read the source tablets. sourceTablets, err := wr.ts.GetTabletMap(ctx, sources) if err != nil { return err } // Insert their KeyRange in the SourceShards array. // We use a linear 0-based id, that matches what worker/split_clone.go // inserts into _vt.vreplication. // We want to guarantee sourceShards[i] is using sources[i], // So iterating over the sourceTablets map would be a bad idea. sourceShards := make([]*topodatapb.Shard_SourceShard, len(sourceTablets)) for i, alias := range sources { ti := sourceTablets[topoproto.TabletAliasString(alias)] sourceShards[i] = &topodatapb.Shard_SourceShard{ Uid: uint32(i), Keyspace: ti.Keyspace, Shard: ti.Shard, KeyRange: ti.KeyRange, Tables: tables, } } // Update the shard with the new source shards. _, err = wr.ts.UpdateShardFields(ctx, keyspace, shard, func(si *topo.ShardInfo) error { // If the shard already has sources, maybe it's already been restored, // so let's be safe and abort right here. if len(si.SourceShards) > 0 { return fmt.Errorf("shard %v/%v already has SourceShards, not overwriting them (full record: %v)", keyspace, shard, *si.Shard) } si.SourceShards = sourceShards return nil }) return err }
go
func (wr *Wrangler) SetSourceShards(ctx context.Context, keyspace, shard string, sources []*topodatapb.TabletAlias, tables []string) error { // Read the source tablets. sourceTablets, err := wr.ts.GetTabletMap(ctx, sources) if err != nil { return err } // Insert their KeyRange in the SourceShards array. // We use a linear 0-based id, that matches what worker/split_clone.go // inserts into _vt.vreplication. // We want to guarantee sourceShards[i] is using sources[i], // So iterating over the sourceTablets map would be a bad idea. sourceShards := make([]*topodatapb.Shard_SourceShard, len(sourceTablets)) for i, alias := range sources { ti := sourceTablets[topoproto.TabletAliasString(alias)] sourceShards[i] = &topodatapb.Shard_SourceShard{ Uid: uint32(i), Keyspace: ti.Keyspace, Shard: ti.Shard, KeyRange: ti.KeyRange, Tables: tables, } } // Update the shard with the new source shards. _, err = wr.ts.UpdateShardFields(ctx, keyspace, shard, func(si *topo.ShardInfo) error { // If the shard already has sources, maybe it's already been restored, // so let's be safe and abort right here. if len(si.SourceShards) > 0 { return fmt.Errorf("shard %v/%v already has SourceShards, not overwriting them (full record: %v)", keyspace, shard, *si.Shard) } si.SourceShards = sourceShards return nil }) return err }
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// SetSourceShards is a utility function to override the SourceShards fields // on a Shard.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/wrangler/split.go#L42-L78
train
vitessio/vitess
go/vt/wrangler/split.go
WaitForFilteredReplication
func (wr *Wrangler) WaitForFilteredReplication(ctx context.Context, keyspace, shard string, maxDelay time.Duration) error { shardInfo, err := wr.TopoServer().GetShard(ctx, keyspace, shard) if err != nil { return err } if len(shardInfo.SourceShards) == 0 { return fmt.Errorf("shard %v/%v has no source shard", keyspace, shard) } if !shardInfo.HasMaster() { return fmt.Errorf("shard %v/%v has no master", keyspace, shard) } alias := shardInfo.MasterAlias tabletInfo, err := wr.TopoServer().GetTablet(ctx, alias) if err != nil { return err } // Always run an explicit healthcheck first to make sure we don't see any outdated values. // This is especially true for tests and automation where there is no pause of multiple seconds // between commands and the periodic healthcheck did not run again yet. if err := wr.TabletManagerClient().RunHealthCheck(ctx, tabletInfo.Tablet); err != nil { return fmt.Errorf("failed to run explicit healthcheck on tablet: %v err: %v", tabletInfo, err) } conn, err := tabletconn.GetDialer()(tabletInfo.Tablet, grpcclient.FailFast(false)) if err != nil { return fmt.Errorf("cannot connect to tablet %v: %v", alias, err) } var lastSeenDelay time.Duration err = conn.StreamHealth(ctx, func(shr *querypb.StreamHealthResponse) error { stats := shr.RealtimeStats if stats == nil { return fmt.Errorf("health record does not include RealtimeStats message. tablet: %v health record: %v", alias, shr) } if stats.HealthError != "" { return fmt.Errorf("tablet is not healthy. tablet: %v health record: %v", alias, shr) } if stats.BinlogPlayersCount == 0 { return fmt.Errorf("no filtered replication running on tablet: %v health record: %v", alias, shr) } delaySecs := stats.SecondsBehindMasterFilteredReplication lastSeenDelay = time.Duration(delaySecs) * time.Second if lastSeenDelay < 0 { return fmt.Errorf("last seen delay should never be negative. tablet: %v delay: %v", alias, lastSeenDelay) } if lastSeenDelay <= maxDelay { wr.Logger().Printf("Filtered replication on tablet: %v has caught up. Last seen delay: %.1f seconds\n", alias, lastSeenDelay.Seconds()) return io.EOF } wr.Logger().Printf("Waiting for filtered replication to catch up on tablet: %v Last seen delay: %.1f seconds\n", alias, lastSeenDelay.Seconds()) return nil }) if err != nil { return fmt.Errorf("could not stream health records from tablet: %v err: %v", alias, err) } select { case <-ctx.Done(): return fmt.Errorf("context was done before filtered replication did catch up. Last seen delay: %v context Error: %v", lastSeenDelay, ctx.Err()) default: } return nil }
go
func (wr *Wrangler) WaitForFilteredReplication(ctx context.Context, keyspace, shard string, maxDelay time.Duration) error { shardInfo, err := wr.TopoServer().GetShard(ctx, keyspace, shard) if err != nil { return err } if len(shardInfo.SourceShards) == 0 { return fmt.Errorf("shard %v/%v has no source shard", keyspace, shard) } if !shardInfo.HasMaster() { return fmt.Errorf("shard %v/%v has no master", keyspace, shard) } alias := shardInfo.MasterAlias tabletInfo, err := wr.TopoServer().GetTablet(ctx, alias) if err != nil { return err } // Always run an explicit healthcheck first to make sure we don't see any outdated values. // This is especially true for tests and automation where there is no pause of multiple seconds // between commands and the periodic healthcheck did not run again yet. if err := wr.TabletManagerClient().RunHealthCheck(ctx, tabletInfo.Tablet); err != nil { return fmt.Errorf("failed to run explicit healthcheck on tablet: %v err: %v", tabletInfo, err) } conn, err := tabletconn.GetDialer()(tabletInfo.Tablet, grpcclient.FailFast(false)) if err != nil { return fmt.Errorf("cannot connect to tablet %v: %v", alias, err) } var lastSeenDelay time.Duration err = conn.StreamHealth(ctx, func(shr *querypb.StreamHealthResponse) error { stats := shr.RealtimeStats if stats == nil { return fmt.Errorf("health record does not include RealtimeStats message. tablet: %v health record: %v", alias, shr) } if stats.HealthError != "" { return fmt.Errorf("tablet is not healthy. tablet: %v health record: %v", alias, shr) } if stats.BinlogPlayersCount == 0 { return fmt.Errorf("no filtered replication running on tablet: %v health record: %v", alias, shr) } delaySecs := stats.SecondsBehindMasterFilteredReplication lastSeenDelay = time.Duration(delaySecs) * time.Second if lastSeenDelay < 0 { return fmt.Errorf("last seen delay should never be negative. tablet: %v delay: %v", alias, lastSeenDelay) } if lastSeenDelay <= maxDelay { wr.Logger().Printf("Filtered replication on tablet: %v has caught up. Last seen delay: %.1f seconds\n", alias, lastSeenDelay.Seconds()) return io.EOF } wr.Logger().Printf("Waiting for filtered replication to catch up on tablet: %v Last seen delay: %.1f seconds\n", alias, lastSeenDelay.Seconds()) return nil }) if err != nil { return fmt.Errorf("could not stream health records from tablet: %v err: %v", alias, err) } select { case <-ctx.Done(): return fmt.Errorf("context was done before filtered replication did catch up. Last seen delay: %v context Error: %v", lastSeenDelay, ctx.Err()) default: } return nil }
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// WaitForFilteredReplication will wait until the Filtered Replication process has finished.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/wrangler/split.go#L81-L145
train
vitessio/vitess
go/vt/vtctl/grpcvtctlclient/client.go
ExecuteVtctlCommand
func (client *gRPCVtctlClient) ExecuteVtctlCommand(ctx context.Context, args []string, actionTimeout time.Duration) (logutil.EventStream, error) { query := &vtctldatapb.ExecuteVtctlCommandRequest{ Args: args, ActionTimeout: int64(actionTimeout.Nanoseconds()), } stream, err := client.c.ExecuteVtctlCommand(ctx, query) if err != nil { return nil, err } return &eventStreamAdapter{stream}, nil }
go
func (client *gRPCVtctlClient) ExecuteVtctlCommand(ctx context.Context, args []string, actionTimeout time.Duration) (logutil.EventStream, error) { query := &vtctldatapb.ExecuteVtctlCommandRequest{ Args: args, ActionTimeout: int64(actionTimeout.Nanoseconds()), } stream, err := client.c.ExecuteVtctlCommand(ctx, query) if err != nil { return nil, err } return &eventStreamAdapter{stream}, nil }
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// ExecuteVtctlCommand is part of the VtctlClient interface
[ "ExecuteVtctlCommand", "is", "part", "of", "the", "VtctlClient", "interface" ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vtctl/grpcvtctlclient/client.go#L78-L89
train
vitessio/vitess
go/netutil/netutil.go
JoinHostPort
func JoinHostPort(host string, port int32) string { return net.JoinHostPort(host, strconv.FormatInt(int64(port), 10)) }
go
func JoinHostPort(host string, port int32) string { return net.JoinHostPort(host, strconv.FormatInt(int64(port), 10)) }
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// JoinHostPort is an extension to net.JoinHostPort that also formats the // integer port.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/netutil/netutil.go#L114-L116
train
vitessio/vitess
go/netutil/netutil.go
FullyQualifiedHostname
func FullyQualifiedHostname() (string, error) { // The machine hostname (which is also returned by os.Hostname()) may not be // set to the FQDN, but only the first part of it e.g. "localhost" instead of // "localhost.localdomain". // To get the full FQDN, we do the following: // 1. Get the machine hostname. Example: localhost hostname, err := os.Hostname() if err != nil { return "", fmt.Errorf("FullyQualifiedHostname: failed to retrieve the hostname of this machine: %v", err) } // 2. Look up the IP address for that hostname. Example: 127.0.0.1 ips, err := net.LookupHost(hostname) if err != nil { return "", fmt.Errorf("FullyQualifiedHostname: failed to lookup the IP of this machine's hostname (%v): %v", hostname, err) } if len(ips) == 0 { return "", fmt.Errorf("FullyQualifiedHostname: lookup of the IP of this machine's hostname (%v) did not return any IP address", hostname) } // If multiple IPs are returned, we only look at the first one. localIP := ips[0] // 3. Reverse lookup the IP. Example: localhost.localdomain resolvedHostnames, err := net.LookupAddr(localIP) if err != nil { return "", fmt.Errorf("FullyQualifiedHostname: failed to reverse lookup this machine's local IP (%v): %v", localIP, err) } if len(resolvedHostnames) == 0 { return "", fmt.Errorf("FullyQualifiedHostname: reverse lookup of this machine's local IP (%v) did not return any hostnames", localIP) } // If multiple hostnames are found, we return only the first one. // If multiple hostnames are listed e.g. in an entry in the /etc/hosts file, // the current Go implementation returns them in that order. // Example for an /etc/hosts entry: // 127.0.0.1 localhost.localdomain localhost // If the FQDN isn't returned by this function, check the order in the entry // in your /etc/hosts file. return strings.TrimRight(resolvedHostnames[0], "."), nil }
go
func FullyQualifiedHostname() (string, error) { // The machine hostname (which is also returned by os.Hostname()) may not be // set to the FQDN, but only the first part of it e.g. "localhost" instead of // "localhost.localdomain". // To get the full FQDN, we do the following: // 1. Get the machine hostname. Example: localhost hostname, err := os.Hostname() if err != nil { return "", fmt.Errorf("FullyQualifiedHostname: failed to retrieve the hostname of this machine: %v", err) } // 2. Look up the IP address for that hostname. Example: 127.0.0.1 ips, err := net.LookupHost(hostname) if err != nil { return "", fmt.Errorf("FullyQualifiedHostname: failed to lookup the IP of this machine's hostname (%v): %v", hostname, err) } if len(ips) == 0 { return "", fmt.Errorf("FullyQualifiedHostname: lookup of the IP of this machine's hostname (%v) did not return any IP address", hostname) } // If multiple IPs are returned, we only look at the first one. localIP := ips[0] // 3. Reverse lookup the IP. Example: localhost.localdomain resolvedHostnames, err := net.LookupAddr(localIP) if err != nil { return "", fmt.Errorf("FullyQualifiedHostname: failed to reverse lookup this machine's local IP (%v): %v", localIP, err) } if len(resolvedHostnames) == 0 { return "", fmt.Errorf("FullyQualifiedHostname: reverse lookup of this machine's local IP (%v) did not return any hostnames", localIP) } // If multiple hostnames are found, we return only the first one. // If multiple hostnames are listed e.g. in an entry in the /etc/hosts file, // the current Go implementation returns them in that order. // Example for an /etc/hosts entry: // 127.0.0.1 localhost.localdomain localhost // If the FQDN isn't returned by this function, check the order in the entry // in your /etc/hosts file. return strings.TrimRight(resolvedHostnames[0], "."), nil }
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// FullyQualifiedHostname returns the FQDN of the machine.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/netutil/netutil.go#L119-L158
train
vitessio/vitess
go/netutil/netutil.go
FullyQualifiedHostnameOrPanic
func FullyQualifiedHostnameOrPanic() string { hostname, err := FullyQualifiedHostname() if err != nil { panic(err) } return hostname }
go
func FullyQualifiedHostnameOrPanic() string { hostname, err := FullyQualifiedHostname() if err != nil { panic(err) } return hostname }
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// FullyQualifiedHostnameOrPanic is the same as FullyQualifiedHostname // but panics in case of an error.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/netutil/netutil.go#L162-L168
train
vitessio/vitess
go/vt/vttablet/tabletconn/tablet_conn.go
RegisterDialer
func RegisterDialer(name string, dialer TabletDialer) { if _, ok := dialers[name]; ok { log.Fatalf("Dialer %s already exists", name) } dialers[name] = dialer }
go
func RegisterDialer(name string, dialer TabletDialer) { if _, ok := dialers[name]; ok { log.Fatalf("Dialer %s already exists", name) } dialers[name] = dialer }
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// RegisterDialer is meant to be used by TabletDialer implementations // to self register.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vttablet/tabletconn/tablet_conn.go#L59-L64
train
vitessio/vitess
go/vt/vttablet/tabletconn/tablet_conn.go
GetDialer
func GetDialer() TabletDialer { td, ok := dialers[*TabletProtocol] if !ok { log.Exitf("No dialer registered for tablet protocol %s", *TabletProtocol) } return td }
go
func GetDialer() TabletDialer { td, ok := dialers[*TabletProtocol] if !ok { log.Exitf("No dialer registered for tablet protocol %s", *TabletProtocol) } return td }
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// GetDialer returns the dialer to use, described by the command line flag
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vttablet/tabletconn/tablet_conn.go#L67-L73
train
vitessio/vitess
go/vt/worker/instance.go
NewInstance
func NewInstance(ts *topo.Server, cell string, commandDisplayInterval time.Duration) *Instance { wi := &Instance{topoServer: ts, cell: cell, commandDisplayInterval: commandDisplayInterval} // Note: setAndStartWorker() also adds a MemoryLogger for the webserver. wi.wr = wi.CreateWrangler(logutil.NewConsoleLogger()) return wi }
go
func NewInstance(ts *topo.Server, cell string, commandDisplayInterval time.Duration) *Instance { wi := &Instance{topoServer: ts, cell: cell, commandDisplayInterval: commandDisplayInterval} // Note: setAndStartWorker() also adds a MemoryLogger for the webserver. wi.wr = wi.CreateWrangler(logutil.NewConsoleLogger()) return wi }
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// NewInstance creates a new Instance.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/worker/instance.go#L68-L73
train
vitessio/vitess
go/vt/worker/instance.go
CreateWrangler
func (wi *Instance) CreateWrangler(logger logutil.Logger) *wrangler.Wrangler { return wrangler.New(logger, wi.topoServer, tmclient.NewTabletManagerClient()) }
go
func (wi *Instance) CreateWrangler(logger logutil.Logger) *wrangler.Wrangler { return wrangler.New(logger, wi.topoServer, tmclient.NewTabletManagerClient()) }
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// CreateWrangler creates a new wrangler using the instance specific configuration.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/worker/instance.go#L76-L78
train
vitessio/vitess
go/vt/worker/instance.go
InstallSignalHandlers
func (wi *Instance) InstallSignalHandlers() { sigChan := make(chan os.Signal, 1) signal.Notify(sigChan, syscall.SIGTERM, syscall.SIGINT) go func() { for s := range sigChan { // We got a signal, notify our modules. // Use an extra function to properly unlock using defer. func() { wi.currentWorkerMutex.Lock() defer wi.currentWorkerMutex.Unlock() if wi.currentCancelFunc != nil { log.Infof("Trying to cancel current worker after receiving signal: %v", s) wi.currentCancelFunc() } else { log.Infof("Shutting down idle worker after receiving signal: %v", s) os.Exit(0) } }() } }() }
go
func (wi *Instance) InstallSignalHandlers() { sigChan := make(chan os.Signal, 1) signal.Notify(sigChan, syscall.SIGTERM, syscall.SIGINT) go func() { for s := range sigChan { // We got a signal, notify our modules. // Use an extra function to properly unlock using defer. func() { wi.currentWorkerMutex.Lock() defer wi.currentWorkerMutex.Unlock() if wi.currentCancelFunc != nil { log.Infof("Trying to cancel current worker after receiving signal: %v", s) wi.currentCancelFunc() } else { log.Infof("Shutting down idle worker after receiving signal: %v", s) os.Exit(0) } }() } }() }
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// InstallSignalHandlers installs signal handler which exit vtworker gracefully.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/worker/instance.go#L173-L193
train
vitessio/vitess
go/vt/worker/instance.go
Reset
func (wi *Instance) Reset() error { wi.currentWorkerMutex.Lock() defer wi.currentWorkerMutex.Unlock() if wi.currentWorker == nil { return nil } // check the worker is really done if wi.currentContext == nil { wi.currentWorker = nil wi.currentMemoryLogger = nil return nil } return vterrors.New(vtrpcpb.Code_FAILED_PRECONDITION, "worker still executing") }
go
func (wi *Instance) Reset() error { wi.currentWorkerMutex.Lock() defer wi.currentWorkerMutex.Unlock() if wi.currentWorker == nil { return nil } // check the worker is really done if wi.currentContext == nil { wi.currentWorker = nil wi.currentMemoryLogger = nil return nil } return vterrors.New(vtrpcpb.Code_FAILED_PRECONDITION, "worker still executing") }
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// Reset resets the state of a finished worker. It returns an error if the worker is still running.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/worker/instance.go#L196-L212
train
vitessio/vitess
go/vt/worker/row_differ.go
skipRow
func (rd *RowDiffer2) skipRow() { rd.equalRowsStatsCounters.Add(rd.tableName, 1) rd.tableStatusList.addCopiedRows(rd.tableIndex, 1) }
go
func (rd *RowDiffer2) skipRow() { rd.equalRowsStatsCounters.Add(rd.tableName, 1) rd.tableStatusList.addCopiedRows(rd.tableIndex, 1) }
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// skipRow is used for the DiffType DiffEqual. // Currently, it only updates the statistics and therefore does not require the // row as input.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/worker/row_differ.go#L272-L275
train
vitessio/vitess
go/vt/worker/row_differ.go
reconcileRow
func (rd *RowDiffer2) reconcileRow(row []sqltypes.Value, typ DiffType) error { if typ == DiffNotEqual { panic(fmt.Sprintf("reconcileRow() called with wrong type: %v", typ)) } destShardIndex, err := rd.router.Route(row) if err != nil { return vterrors.Wrapf(err, "failed to route row (%v) to correct shard", row) } if err := rd.aggregators[destShardIndex][typ].Add(row); err != nil { return vterrors.Wrap(err, "failed to add row update to RowAggregator") } // TODO(mberlin): Add more fine granular stats here. rd.tableStatusList.addCopiedRows(rd.tableIndex, 1) return nil }
go
func (rd *RowDiffer2) reconcileRow(row []sqltypes.Value, typ DiffType) error { if typ == DiffNotEqual { panic(fmt.Sprintf("reconcileRow() called with wrong type: %v", typ)) } destShardIndex, err := rd.router.Route(row) if err != nil { return vterrors.Wrapf(err, "failed to route row (%v) to correct shard", row) } if err := rd.aggregators[destShardIndex][typ].Add(row); err != nil { return vterrors.Wrap(err, "failed to add row update to RowAggregator") } // TODO(mberlin): Add more fine granular stats here. rd.tableStatusList.addCopiedRows(rd.tableIndex, 1) return nil }
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// reconcileRow is used for the DiffType DiffMissing and DiffExtraneous.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/worker/row_differ.go#L278-L293
train
vitessio/vitess
go/vt/worker/row_differ.go
NewRowRouter
func NewRowRouter(shardInfos []*topo.ShardInfo, keyResolver keyspaceIDResolver) RowRouter { keyRanges := make([]*topodatapb.KeyRange, len(shardInfos)) for i, si := range shardInfos { keyRanges[i] = si.KeyRange } return RowRouter{keyResolver, keyRanges} }
go
func NewRowRouter(shardInfos []*topo.ShardInfo, keyResolver keyspaceIDResolver) RowRouter { keyRanges := make([]*topodatapb.KeyRange, len(shardInfos)) for i, si := range shardInfos { keyRanges[i] = si.KeyRange } return RowRouter{keyResolver, keyRanges} }
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// NewRowRouter creates a RowRouter. // We assume that the key ranges in shardInfo cover the full keyrange i.e. // for any possible keyspaceID there is a shard we can route to.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/worker/row_differ.go#L343-L349
train
vitessio/vitess
go/vt/wrangler/schema.go
GetSchema
func (wr *Wrangler) GetSchema(ctx context.Context, tabletAlias *topodatapb.TabletAlias, tables, excludeTables []string, includeViews bool) (*tabletmanagerdatapb.SchemaDefinition, error) { ti, err := wr.ts.GetTablet(ctx, tabletAlias) if err != nil { return nil, fmt.Errorf("GetTablet(%v) failed: %v", tabletAlias, err) } return wr.tmc.GetSchema(ctx, ti.Tablet, tables, excludeTables, includeViews) }
go
func (wr *Wrangler) GetSchema(ctx context.Context, tabletAlias *topodatapb.TabletAlias, tables, excludeTables []string, includeViews bool) (*tabletmanagerdatapb.SchemaDefinition, error) { ti, err := wr.ts.GetTablet(ctx, tabletAlias) if err != nil { return nil, fmt.Errorf("GetTablet(%v) failed: %v", tabletAlias, err) } return wr.tmc.GetSchema(ctx, ti.Tablet, tables, excludeTables, includeViews) }
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// GetSchema uses an RPC to get the schema from a remote tablet
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/wrangler/schema.go#L47-L54
train
vitessio/vitess
go/vt/wrangler/schema.go
ReloadSchema
func (wr *Wrangler) ReloadSchema(ctx context.Context, tabletAlias *topodatapb.TabletAlias) error { ti, err := wr.ts.GetTablet(ctx, tabletAlias) if err != nil { return fmt.Errorf("GetTablet(%v) failed: %v", tabletAlias, err) } return wr.tmc.ReloadSchema(ctx, ti.Tablet, "") }
go
func (wr *Wrangler) ReloadSchema(ctx context.Context, tabletAlias *topodatapb.TabletAlias) error { ti, err := wr.ts.GetTablet(ctx, tabletAlias) if err != nil { return fmt.Errorf("GetTablet(%v) failed: %v", tabletAlias, err) } return wr.tmc.ReloadSchema(ctx, ti.Tablet, "") }
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// ReloadSchema forces the remote tablet to reload its schema.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/wrangler/schema.go#L57-L64
train
vitessio/vitess
go/vt/wrangler/schema.go
diffSchema
func (wr *Wrangler) diffSchema(ctx context.Context, masterSchema *tabletmanagerdatapb.SchemaDefinition, masterTabletAlias, alias *topodatapb.TabletAlias, excludeTables []string, includeViews bool, wg *sync.WaitGroup, er concurrency.ErrorRecorder) { defer wg.Done() log.Infof("Gathering schema for %v", topoproto.TabletAliasString(alias)) slaveSchema, err := wr.GetSchema(ctx, alias, nil, excludeTables, includeViews) if err != nil { er.RecordError(fmt.Errorf("GetSchema(%v, nil, %v, %v) failed: %v", alias, excludeTables, includeViews, err)) return } log.Infof("Diffing schema for %v", topoproto.TabletAliasString(alias)) tmutils.DiffSchema(topoproto.TabletAliasString(masterTabletAlias), masterSchema, topoproto.TabletAliasString(alias), slaveSchema, er) }
go
func (wr *Wrangler) diffSchema(ctx context.Context, masterSchema *tabletmanagerdatapb.SchemaDefinition, masterTabletAlias, alias *topodatapb.TabletAlias, excludeTables []string, includeViews bool, wg *sync.WaitGroup, er concurrency.ErrorRecorder) { defer wg.Done() log.Infof("Gathering schema for %v", topoproto.TabletAliasString(alias)) slaveSchema, err := wr.GetSchema(ctx, alias, nil, excludeTables, includeViews) if err != nil { er.RecordError(fmt.Errorf("GetSchema(%v, nil, %v, %v) failed: %v", alias, excludeTables, includeViews, err)) return } log.Infof("Diffing schema for %v", topoproto.TabletAliasString(alias)) tmutils.DiffSchema(topoproto.TabletAliasString(masterTabletAlias), masterSchema, topoproto.TabletAliasString(alias), slaveSchema, er) }
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// helper method to asynchronously diff a schema
[ "helper", "method", "to", "asynchronously", "diff", "a", "schema" ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/wrangler/schema.go#L132-L143
train
vitessio/vitess
go/vt/wrangler/schema.go
ValidateSchemaShard
func (wr *Wrangler) ValidateSchemaShard(ctx context.Context, keyspace, shard string, excludeTables []string, includeViews bool) error { si, err := wr.ts.GetShard(ctx, keyspace, shard) if err != nil { return fmt.Errorf("GetShard(%v, %v) failed: %v", keyspace, shard, err) } // get schema from the master, or error if !si.HasMaster() { return fmt.Errorf("no master in shard %v/%v", keyspace, shard) } log.Infof("Gathering schema for master %v", topoproto.TabletAliasString(si.MasterAlias)) masterSchema, err := wr.GetSchema(ctx, si.MasterAlias, nil, excludeTables, includeViews) if err != nil { return fmt.Errorf("GetSchema(%v, nil, %v, %v) failed: %v", si.MasterAlias, excludeTables, includeViews, err) } // read all the aliases in the shard, that is all tablets that are // replicating from the master aliases, err := wr.ts.FindAllTabletAliasesInShard(ctx, keyspace, shard) if err != nil { return fmt.Errorf("FindAllTabletAliasesInShard(%v, %v) failed: %v", keyspace, shard, err) } // then diff with all slaves er := concurrency.AllErrorRecorder{} wg := sync.WaitGroup{} for _, alias := range aliases { if topoproto.TabletAliasEqual(alias, si.MasterAlias) { continue } wg.Add(1) go wr.diffSchema(ctx, masterSchema, si.MasterAlias, alias, excludeTables, includeViews, &wg, &er) } wg.Wait() if er.HasErrors() { return fmt.Errorf("schema diffs: %v", er.Error().Error()) } return nil }
go
func (wr *Wrangler) ValidateSchemaShard(ctx context.Context, keyspace, shard string, excludeTables []string, includeViews bool) error { si, err := wr.ts.GetShard(ctx, keyspace, shard) if err != nil { return fmt.Errorf("GetShard(%v, %v) failed: %v", keyspace, shard, err) } // get schema from the master, or error if !si.HasMaster() { return fmt.Errorf("no master in shard %v/%v", keyspace, shard) } log.Infof("Gathering schema for master %v", topoproto.TabletAliasString(si.MasterAlias)) masterSchema, err := wr.GetSchema(ctx, si.MasterAlias, nil, excludeTables, includeViews) if err != nil { return fmt.Errorf("GetSchema(%v, nil, %v, %v) failed: %v", si.MasterAlias, excludeTables, includeViews, err) } // read all the aliases in the shard, that is all tablets that are // replicating from the master aliases, err := wr.ts.FindAllTabletAliasesInShard(ctx, keyspace, shard) if err != nil { return fmt.Errorf("FindAllTabletAliasesInShard(%v, %v) failed: %v", keyspace, shard, err) } // then diff with all slaves er := concurrency.AllErrorRecorder{} wg := sync.WaitGroup{} for _, alias := range aliases { if topoproto.TabletAliasEqual(alias, si.MasterAlias) { continue } wg.Add(1) go wr.diffSchema(ctx, masterSchema, si.MasterAlias, alias, excludeTables, includeViews, &wg, &er) } wg.Wait() if er.HasErrors() { return fmt.Errorf("schema diffs: %v", er.Error().Error()) } return nil }
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// ValidateSchemaShard will diff the schema from all the tablets in the shard.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/wrangler/schema.go#L146-L185
train
vitessio/vitess
go/vt/wrangler/schema.go
PreflightSchema
func (wr *Wrangler) PreflightSchema(ctx context.Context, tabletAlias *topodatapb.TabletAlias, changes []string) ([]*tabletmanagerdatapb.SchemaChangeResult, error) { ti, err := wr.ts.GetTablet(ctx, tabletAlias) if err != nil { return nil, fmt.Errorf("GetTablet(%v) failed: %v", tabletAlias, err) } return wr.tmc.PreflightSchema(ctx, ti.Tablet, changes) }
go
func (wr *Wrangler) PreflightSchema(ctx context.Context, tabletAlias *topodatapb.TabletAlias, changes []string) ([]*tabletmanagerdatapb.SchemaChangeResult, error) { ti, err := wr.ts.GetTablet(ctx, tabletAlias) if err != nil { return nil, fmt.Errorf("GetTablet(%v) failed: %v", tabletAlias, err) } return wr.tmc.PreflightSchema(ctx, ti.Tablet, changes) }
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// PreflightSchema will try a schema change on the remote tablet.
[ "PreflightSchema", "will", "try", "a", "schema", "change", "on", "the", "remote", "tablet", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/wrangler/schema.go#L271-L277
train
vitessio/vitess
go/vt/wrangler/schema.go
CopySchemaShardFromShard
func (wr *Wrangler) CopySchemaShardFromShard(ctx context.Context, tables, excludeTables []string, includeViews bool, sourceKeyspace, sourceShard, destKeyspace, destShard string, waitSlaveTimeout time.Duration) error { sourceShardInfo, err := wr.ts.GetShard(ctx, sourceKeyspace, sourceShard) if err != nil { return fmt.Errorf("GetShard(%v, %v) failed: %v", sourceKeyspace, sourceShard, err) } if sourceShardInfo.MasterAlias == nil { return fmt.Errorf("no master in shard record %v/%v. Consider running 'vtctl InitShardMaster' in case of a new shard or to reparent the shard to fix the topology data, or providing a non-master tablet alias", sourceKeyspace, sourceShard) } return wr.CopySchemaShard(ctx, sourceShardInfo.MasterAlias, tables, excludeTables, includeViews, destKeyspace, destShard, waitSlaveTimeout) }
go
func (wr *Wrangler) CopySchemaShardFromShard(ctx context.Context, tables, excludeTables []string, includeViews bool, sourceKeyspace, sourceShard, destKeyspace, destShard string, waitSlaveTimeout time.Duration) error { sourceShardInfo, err := wr.ts.GetShard(ctx, sourceKeyspace, sourceShard) if err != nil { return fmt.Errorf("GetShard(%v, %v) failed: %v", sourceKeyspace, sourceShard, err) } if sourceShardInfo.MasterAlias == nil { return fmt.Errorf("no master in shard record %v/%v. Consider running 'vtctl InitShardMaster' in case of a new shard or to reparent the shard to fix the topology data, or providing a non-master tablet alias", sourceKeyspace, sourceShard) } return wr.CopySchemaShard(ctx, sourceShardInfo.MasterAlias, tables, excludeTables, includeViews, destKeyspace, destShard, waitSlaveTimeout) }
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// CopySchemaShardFromShard copies the schema from a source shard to the specified destination shard. // For both source and destination it picks the master tablet. See also CopySchemaShard.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/wrangler/schema.go#L281-L291
train
vitessio/vitess
go/vt/wrangler/schema.go
copyShardMetadata
func (wr *Wrangler) copyShardMetadata(ctx context.Context, srcTabletAlias *topodatapb.TabletAlias, destTabletAlias *topodatapb.TabletAlias) error { sql := "SELECT 1 FROM information_schema.tables WHERE table_schema = '_vt' AND table_name = 'shard_metadata'" presenceResult, err := wr.ExecuteFetchAsDba(ctx, srcTabletAlias, sql, 1, false, false) if err != nil { return fmt.Errorf("ExecuteFetchAsDba(%v, %v, 1, false, false) failed: %v", srcTabletAlias, sql, err) } if len(presenceResult.Rows) == 0 { log.Infof("_vt.shard_metadata doesn't exist on the source tablet %v, skipping its copy.", topoproto.TabletAliasString(srcTabletAlias)) return nil } // TODO: 100 may be too low here for row limit sql = "SELECT db_name, name, value FROM _vt.shard_metadata" dataProto, err := wr.ExecuteFetchAsDba(ctx, srcTabletAlias, sql, 100, false, false) if err != nil { return fmt.Errorf("ExecuteFetchAsDba(%v, %v, 100, false, false) failed: %v", srcTabletAlias, sql, err) } data := sqltypes.Proto3ToResult(dataProto) for _, row := range data.Rows { dbName := row[0] name := row[1] value := row[2] queryBuf := bytes.Buffer{} queryBuf.WriteString("INSERT INTO _vt.shard_metadata (db_name, name, value) VALUES (") dbName.EncodeSQL(&queryBuf) queryBuf.WriteByte(',') name.EncodeSQL(&queryBuf) queryBuf.WriteByte(',') value.EncodeSQL(&queryBuf) queryBuf.WriteString(") ON DUPLICATE KEY UPDATE value = ") value.EncodeSQL(&queryBuf) _, err := wr.ExecuteFetchAsDba(ctx, destTabletAlias, queryBuf.String(), 0, false, false) if err != nil { return fmt.Errorf("ExecuteFetchAsDba(%v, %v, 0, false, false) failed: %v", destTabletAlias, queryBuf.String(), err) } } return nil }
go
func (wr *Wrangler) copyShardMetadata(ctx context.Context, srcTabletAlias *topodatapb.TabletAlias, destTabletAlias *topodatapb.TabletAlias) error { sql := "SELECT 1 FROM information_schema.tables WHERE table_schema = '_vt' AND table_name = 'shard_metadata'" presenceResult, err := wr.ExecuteFetchAsDba(ctx, srcTabletAlias, sql, 1, false, false) if err != nil { return fmt.Errorf("ExecuteFetchAsDba(%v, %v, 1, false, false) failed: %v", srcTabletAlias, sql, err) } if len(presenceResult.Rows) == 0 { log.Infof("_vt.shard_metadata doesn't exist on the source tablet %v, skipping its copy.", topoproto.TabletAliasString(srcTabletAlias)) return nil } // TODO: 100 may be too low here for row limit sql = "SELECT db_name, name, value FROM _vt.shard_metadata" dataProto, err := wr.ExecuteFetchAsDba(ctx, srcTabletAlias, sql, 100, false, false) if err != nil { return fmt.Errorf("ExecuteFetchAsDba(%v, %v, 100, false, false) failed: %v", srcTabletAlias, sql, err) } data := sqltypes.Proto3ToResult(dataProto) for _, row := range data.Rows { dbName := row[0] name := row[1] value := row[2] queryBuf := bytes.Buffer{} queryBuf.WriteString("INSERT INTO _vt.shard_metadata (db_name, name, value) VALUES (") dbName.EncodeSQL(&queryBuf) queryBuf.WriteByte(',') name.EncodeSQL(&queryBuf) queryBuf.WriteByte(',') value.EncodeSQL(&queryBuf) queryBuf.WriteString(") ON DUPLICATE KEY UPDATE value = ") value.EncodeSQL(&queryBuf) _, err := wr.ExecuteFetchAsDba(ctx, destTabletAlias, queryBuf.String(), 0, false, false) if err != nil { return fmt.Errorf("ExecuteFetchAsDba(%v, %v, 0, false, false) failed: %v", destTabletAlias, queryBuf.String(), err) } } return nil }
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// copyShardMetadata copies contents of _vt.shard_metadata table from the source // tablet to the destination tablet. It's assumed that destination tablet is a // master and binlogging is not turned off when INSERT statements are executed.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/wrangler/schema.go#L371-L409
train
vitessio/vitess
go/vt/wrangler/schema.go
fillStringTemplate
func fillStringTemplate(tmpl string, vars interface{}) (string, error) { myTemplate := template.Must(template.New("").Parse(tmpl)) data := new(bytes.Buffer) if err := myTemplate.Execute(data, vars); err != nil { return "", err } return data.String(), nil }
go
func fillStringTemplate(tmpl string, vars interface{}) (string, error) { myTemplate := template.Must(template.New("").Parse(tmpl)) data := new(bytes.Buffer) if err := myTemplate.Execute(data, vars); err != nil { return "", err } return data.String(), nil }
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// fillStringTemplate returns the string template filled
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/wrangler/schema.go#L446-L453
train
vitessio/vitess
go/vt/dbconnpool/connection_pool.go
NewConnectionPool
func NewConnectionPool(name string, capacity int, idleTimeout time.Duration, dnsResolutionFrequency time.Duration) *ConnectionPool { cp := &ConnectionPool{capacity: capacity, idleTimeout: idleTimeout, resolutionFrequency: dnsResolutionFrequency} if name == "" || usedNames[name] { return cp } usedNames[name] = true stats.NewGaugeFunc(name+"Capacity", "Connection pool capacity", cp.Capacity) stats.NewGaugeFunc(name+"Available", "Connection pool available", cp.Available) stats.NewGaugeFunc(name+"Active", "Connection pool active", cp.Active) stats.NewGaugeFunc(name+"InUse", "Connection pool in-use", cp.InUse) stats.NewGaugeFunc(name+"MaxCap", "Connection pool max cap", cp.MaxCap) stats.NewCounterFunc(name+"WaitCount", "Connection pool wait count", cp.WaitCount) stats.NewCounterDurationFunc(name+"WaitTime", "Connection pool wait time", cp.WaitTime) stats.NewGaugeDurationFunc(name+"IdleTimeout", "Connection pool idle timeout", cp.IdleTimeout) stats.NewGaugeFunc(name+"IdleClosed", "Connection pool idle closed", cp.IdleClosed) return cp }
go
func NewConnectionPool(name string, capacity int, idleTimeout time.Duration, dnsResolutionFrequency time.Duration) *ConnectionPool { cp := &ConnectionPool{capacity: capacity, idleTimeout: idleTimeout, resolutionFrequency: dnsResolutionFrequency} if name == "" || usedNames[name] { return cp } usedNames[name] = true stats.NewGaugeFunc(name+"Capacity", "Connection pool capacity", cp.Capacity) stats.NewGaugeFunc(name+"Available", "Connection pool available", cp.Available) stats.NewGaugeFunc(name+"Active", "Connection pool active", cp.Active) stats.NewGaugeFunc(name+"InUse", "Connection pool in-use", cp.InUse) stats.NewGaugeFunc(name+"MaxCap", "Connection pool max cap", cp.MaxCap) stats.NewCounterFunc(name+"WaitCount", "Connection pool wait count", cp.WaitCount) stats.NewCounterDurationFunc(name+"WaitTime", "Connection pool wait time", cp.WaitTime) stats.NewGaugeDurationFunc(name+"IdleTimeout", "Connection pool idle timeout", cp.IdleTimeout) stats.NewGaugeFunc(name+"IdleClosed", "Connection pool idle closed", cp.IdleClosed) return cp }
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// NewConnectionPool creates a new ConnectionPool. The name is used // to publish stats only.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/dbconnpool/connection_pool.go#L72-L88
train
vitessio/vitess
go/vt/dbconnpool/connection_pool.go
connect
func (cp *ConnectionPool) connect() (pools.Resource, error) { c, err := NewDBConnection(cp.info, cp.mysqlStats) if err != nil { return nil, err } return &PooledDBConnection{ DBConnection: c, pool: cp, }, nil }
go
func (cp *ConnectionPool) connect() (pools.Resource, error) { c, err := NewDBConnection(cp.info, cp.mysqlStats) if err != nil { return nil, err } return &PooledDBConnection{ DBConnection: c, pool: cp, }, nil }
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// connect is used by the resource pool to create a new Resource.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/dbconnpool/connection_pool.go#L171-L180
train
vitessio/vitess
go/vt/dbconnpool/connection_pool.go
Get
func (cp *ConnectionPool) Get(ctx context.Context) (*PooledDBConnection, error) { p := cp.pool() if p == nil { return nil, ErrConnPoolClosed } r, err := p.Get(ctx) if err != nil { return nil, err } // Check that the RemoteAddr is still a valid Address if cp.resolutionFrequency > 0 && cp.hostIsNotIP && !cp.validAddress(net.ParseIP(r.(*PooledDBConnection).RemoteAddr().String())) { err := r.(*PooledDBConnection).Reconnect() if err != nil { p.Put(r) return nil, err } } return r.(*PooledDBConnection), nil }
go
func (cp *ConnectionPool) Get(ctx context.Context) (*PooledDBConnection, error) { p := cp.pool() if p == nil { return nil, ErrConnPoolClosed } r, err := p.Get(ctx) if err != nil { return nil, err } // Check that the RemoteAddr is still a valid Address if cp.resolutionFrequency > 0 && cp.hostIsNotIP && !cp.validAddress(net.ParseIP(r.(*PooledDBConnection).RemoteAddr().String())) { err := r.(*PooledDBConnection).Reconnect() if err != nil { p.Put(r) return nil, err } } return r.(*PooledDBConnection), nil }
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// Get returns a connection. // You must call Recycle on the PooledDBConnection once done.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/dbconnpool/connection_pool.go#L206-L227
train
vitessio/vitess
go/vt/dbconnpool/connection_pool.go
SetCapacity
func (cp *ConnectionPool) SetCapacity(capacity int) (err error) { cp.mu.Lock() defer cp.mu.Unlock() if cp.connections != nil { err = cp.connections.SetCapacity(capacity) if err != nil { return err } } cp.capacity = capacity return nil }
go
func (cp *ConnectionPool) SetCapacity(capacity int) (err error) { cp.mu.Lock() defer cp.mu.Unlock() if cp.connections != nil { err = cp.connections.SetCapacity(capacity) if err != nil { return err } } cp.capacity = capacity return nil }
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/dbconnpool/connection_pool.go#L246-L257
train
vitessio/vitess
go/vt/dbconnpool/connection_pool.go
StatsJSON
func (cp *ConnectionPool) StatsJSON() string { p := cp.pool() if p == nil { return "{}" } return p.StatsJSON() }
go
func (cp *ConnectionPool) StatsJSON() string { p := cp.pool() if p == nil { return "{}" } return p.StatsJSON() }
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// StatsJSON returns the pool stats as a JSOn object.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/dbconnpool/connection_pool.go#L270-L276
train
vitessio/vitess
go/mysql/constants.go
IsConnErr
func IsConnErr(err error) bool { if sqlErr, ok := err.(*SQLError); ok { num := sqlErr.Number() return (num >= CRUnknownError && num <= CRNamedPipeStateError) || num == ERQueryInterrupted } return false }
go
func IsConnErr(err error) bool { if sqlErr, ok := err.(*SQLError); ok { num := sqlErr.Number() return (num >= CRUnknownError && num <= CRNamedPipeStateError) || num == ERQueryInterrupted } return false }
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// IsConnErr returns true if the error is a connection error.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/mysql/constants.go#L548-L554
train