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vitessio/vitess
go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go
SetSuperReadOnly
func (fmd *FakeMysqlDaemon) SetSuperReadOnly(on bool) error { fmd.SuperReadOnly = on fmd.ReadOnly = on return nil }
go
func (fmd *FakeMysqlDaemon) SetSuperReadOnly(on bool) error { fmd.SuperReadOnly = on fmd.ReadOnly = on return nil }
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// SetSuperReadOnly is part of the MysqlDaemon interface
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go#L247-L251
train
vitessio/vitess
go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go
StartSlave
func (fmd *FakeMysqlDaemon) StartSlave(hookExtraEnv map[string]string) error { return fmd.ExecuteSuperQueryList(context.Background(), []string{ "START SLAVE", }) }
go
func (fmd *FakeMysqlDaemon) StartSlave(hookExtraEnv map[string]string) error { return fmd.ExecuteSuperQueryList(context.Background(), []string{ "START SLAVE", }) }
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// StartSlave is part of the MysqlDaemon interface.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go#L254-L258
train
vitessio/vitess
go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go
StartSlaveUntilAfter
func (fmd *FakeMysqlDaemon) StartSlaveUntilAfter(ctx context.Context, pos mysql.Position) error { if !reflect.DeepEqual(fmd.StartSlaveUntilAfterPos, pos) { return fmt.Errorf("wrong pos for StartSlaveUntilAfter: expected %v got %v", fmd.SetSlavePositionPos, pos) } return fmd.ExecuteSuperQueryList(context.Background(), []string{ "START SLAVE UNTIL AFTER", }) }
go
func (fmd *FakeMysqlDaemon) StartSlaveUntilAfter(ctx context.Context, pos mysql.Position) error { if !reflect.DeepEqual(fmd.StartSlaveUntilAfterPos, pos) { return fmt.Errorf("wrong pos for StartSlaveUntilAfter: expected %v got %v", fmd.SetSlavePositionPos, pos) } return fmd.ExecuteSuperQueryList(context.Background(), []string{ "START SLAVE UNTIL AFTER", }) }
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// StartSlaveUntilAfter is part of the MysqlDaemon interface.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go#L261-L269
train
vitessio/vitess
go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go
SetMaster
func (fmd *FakeMysqlDaemon) SetMaster(ctx context.Context, masterHost string, masterPort int, slaveStopBefore bool, slaveStartAfter bool) error { input := fmt.Sprintf("%v:%v", masterHost, masterPort) if fmd.SetMasterInput != input { return fmt.Errorf("wrong input for SetMasterCommands: expected %v got %v", fmd.SetMasterInput, input) } cmds := []string{} if slaveStopBefore { cmds = append(cmds, "STOP SLAVE") } cmds = append(cmds, "FAKE SET MASTER") if slaveStartAfter { cmds = append(cmds, "START SLAVE") } return fmd.ExecuteSuperQueryList(ctx, cmds) }
go
func (fmd *FakeMysqlDaemon) SetMaster(ctx context.Context, masterHost string, masterPort int, slaveStopBefore bool, slaveStartAfter bool) error { input := fmt.Sprintf("%v:%v", masterHost, masterPort) if fmd.SetMasterInput != input { return fmt.Errorf("wrong input for SetMasterCommands: expected %v got %v", fmd.SetMasterInput, input) } cmds := []string{} if slaveStopBefore { cmds = append(cmds, "STOP SLAVE") } cmds = append(cmds, "FAKE SET MASTER") if slaveStartAfter { cmds = append(cmds, "START SLAVE") } return fmd.ExecuteSuperQueryList(ctx, cmds) }
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// SetMaster is part of the MysqlDaemon interface.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go#L289-L303
train
vitessio/vitess
go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go
WaitForReparentJournal
func (fmd *FakeMysqlDaemon) WaitForReparentJournal(ctx context.Context, timeCreatedNS int64) error { return nil }
go
func (fmd *FakeMysqlDaemon) WaitForReparentJournal(ctx context.Context, timeCreatedNS int64) error { return nil }
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// WaitForReparentJournal is part of the MysqlDaemon interface
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go#L306-L308
train
vitessio/vitess
go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go
WaitMasterPos
func (fmd *FakeMysqlDaemon) WaitMasterPos(_ context.Context, pos mysql.Position) error { if fmd.TimeoutHook != nil { return fmd.TimeoutHook() } if reflect.DeepEqual(fmd.WaitMasterPosition, pos) { return nil } return fmt.Errorf("wrong input for WaitMasterPos: expected %v got %v", fmd.WaitMasterPosition, pos) }
go
func (fmd *FakeMysqlDaemon) WaitMasterPos(_ context.Context, pos mysql.Position) error { if fmd.TimeoutHook != nil { return fmd.TimeoutHook() } if reflect.DeepEqual(fmd.WaitMasterPosition, pos) { return nil } return fmt.Errorf("wrong input for WaitMasterPos: expected %v got %v", fmd.WaitMasterPosition, pos) }
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// WaitMasterPos is part of the MysqlDaemon interface
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go#L316-L324
train
vitessio/vitess
go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go
PromoteSlave
func (fmd *FakeMysqlDaemon) PromoteSlave(hookExtraEnv map[string]string) (mysql.Position, error) { return fmd.PromoteSlaveResult, nil }
go
func (fmd *FakeMysqlDaemon) PromoteSlave(hookExtraEnv map[string]string) (mysql.Position, error) { return fmd.PromoteSlaveResult, nil }
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// PromoteSlave is part of the MysqlDaemon interface
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go#L327-L329
train
vitessio/vitess
go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go
ExecuteSuperQueryList
func (fmd *FakeMysqlDaemon) ExecuteSuperQueryList(ctx context.Context, queryList []string) error { for _, query := range queryList { // test we still have a query to compare if fmd.ExpectedExecuteSuperQueryCurrent >= len(fmd.ExpectedExecuteSuperQueryList) { return fmt.Errorf("unexpected extra query in ExecuteSuperQueryList: %v", query) } // compare the query expected := fmd.ExpectedExecuteSuperQueryList[fmd.ExpectedExecuteSuperQueryCurrent] fmd.ExpectedExecuteSuperQueryCurrent++ if strings.HasPrefix(expected, "SUB") { // remove the SUB from the expected, // and truncate the query to length(expected) expected = expected[3:] if len(query) > len(expected) { query = query[:len(expected)] } } if expected != query { return fmt.Errorf("wrong query for ExecuteSuperQueryList: expected %v got %v", expected, query) } // intercept some queries to update our status switch query { case "START SLAVE": fmd.Replicating = true case "STOP SLAVE": fmd.Replicating = false } } return nil }
go
func (fmd *FakeMysqlDaemon) ExecuteSuperQueryList(ctx context.Context, queryList []string) error { for _, query := range queryList { // test we still have a query to compare if fmd.ExpectedExecuteSuperQueryCurrent >= len(fmd.ExpectedExecuteSuperQueryList) { return fmt.Errorf("unexpected extra query in ExecuteSuperQueryList: %v", query) } // compare the query expected := fmd.ExpectedExecuteSuperQueryList[fmd.ExpectedExecuteSuperQueryCurrent] fmd.ExpectedExecuteSuperQueryCurrent++ if strings.HasPrefix(expected, "SUB") { // remove the SUB from the expected, // and truncate the query to length(expected) expected = expected[3:] if len(query) > len(expected) { query = query[:len(expected)] } } if expected != query { return fmt.Errorf("wrong query for ExecuteSuperQueryList: expected %v got %v", expected, query) } // intercept some queries to update our status switch query { case "START SLAVE": fmd.Replicating = true case "STOP SLAVE": fmd.Replicating = false } } return nil }
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// ExecuteSuperQueryList is part of the MysqlDaemon interface
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go#L332-L363
train
vitessio/vitess
go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go
FetchSuperQuery
func (fmd *FakeMysqlDaemon) FetchSuperQuery(ctx context.Context, query string) (*sqltypes.Result, error) { if fmd.FetchSuperQueryMap == nil { return nil, fmt.Errorf("unexpected query: %v", query) } qr, ok := fmd.FetchSuperQueryMap[query] if !ok { return nil, fmt.Errorf("unexpected query: %v", query) } return qr, nil }
go
func (fmd *FakeMysqlDaemon) FetchSuperQuery(ctx context.Context, query string) (*sqltypes.Result, error) { if fmd.FetchSuperQueryMap == nil { return nil, fmt.Errorf("unexpected query: %v", query) } qr, ok := fmd.FetchSuperQueryMap[query] if !ok { return nil, fmt.Errorf("unexpected query: %v", query) } return qr, nil }
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// FetchSuperQuery returns the results from the map, if any
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go#L366-L376
train
vitessio/vitess
go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go
CheckSuperQueryList
func (fmd *FakeMysqlDaemon) CheckSuperQueryList() error { if fmd.ExpectedExecuteSuperQueryCurrent != len(fmd.ExpectedExecuteSuperQueryList) { return fmt.Errorf("SuperQueryList wasn't consumed, saw %v queries, was expecting %v", fmd.ExpectedExecuteSuperQueryCurrent, len(fmd.ExpectedExecuteSuperQueryList)) } return nil }
go
func (fmd *FakeMysqlDaemon) CheckSuperQueryList() error { if fmd.ExpectedExecuteSuperQueryCurrent != len(fmd.ExpectedExecuteSuperQueryList) { return fmt.Errorf("SuperQueryList wasn't consumed, saw %v queries, was expecting %v", fmd.ExpectedExecuteSuperQueryCurrent, len(fmd.ExpectedExecuteSuperQueryList)) } return nil }
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// CheckSuperQueryList returns an error if all the queries we expected // haven't been seen.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go#L399-L404
train
vitessio/vitess
go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go
GetSchema
func (fmd *FakeMysqlDaemon) GetSchema(dbName string, tables, excludeTables []string, includeViews bool) (*tabletmanagerdatapb.SchemaDefinition, error) { if fmd.SchemaFunc != nil { return fmd.SchemaFunc() } if fmd.Schema == nil { return nil, fmt.Errorf("no schema defined") } return tmutils.FilterTables(fmd.Schema, tables, excludeTables, includeViews) }
go
func (fmd *FakeMysqlDaemon) GetSchema(dbName string, tables, excludeTables []string, includeViews bool) (*tabletmanagerdatapb.SchemaDefinition, error) { if fmd.SchemaFunc != nil { return fmd.SchemaFunc() } if fmd.Schema == nil { return nil, fmt.Errorf("no schema defined") } return tmutils.FilterTables(fmd.Schema, tables, excludeTables, includeViews) }
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// GetSchema is part of the MysqlDaemon interface
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go#L407-L415
train
vitessio/vitess
go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go
GetColumns
func (fmd *FakeMysqlDaemon) GetColumns(dbName, table string) ([]string, error) { return []string{}, nil }
go
func (fmd *FakeMysqlDaemon) GetColumns(dbName, table string) ([]string, error) { return []string{}, nil }
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// GetColumns is part of the MysqlDaemon interface
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go#L418-L420
train
vitessio/vitess
go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go
GetPrimaryKeyColumns
func (fmd *FakeMysqlDaemon) GetPrimaryKeyColumns(dbName, table string) ([]string, error) { return []string{}, nil }
go
func (fmd *FakeMysqlDaemon) GetPrimaryKeyColumns(dbName, table string) ([]string, error) { return []string{}, nil }
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// GetPrimaryKeyColumns is part of the MysqlDaemon interface
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go#L423-L425
train
vitessio/vitess
go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go
PreflightSchemaChange
func (fmd *FakeMysqlDaemon) PreflightSchemaChange(dbName string, changes []string) ([]*tabletmanagerdatapb.SchemaChangeResult, error) { if fmd.PreflightSchemaChangeResult == nil { return nil, fmt.Errorf("no preflight result defined") } return fmd.PreflightSchemaChangeResult, nil }
go
func (fmd *FakeMysqlDaemon) PreflightSchemaChange(dbName string, changes []string) ([]*tabletmanagerdatapb.SchemaChangeResult, error) { if fmd.PreflightSchemaChangeResult == nil { return nil, fmt.Errorf("no preflight result defined") } return fmd.PreflightSchemaChangeResult, nil }
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// PreflightSchemaChange is part of the MysqlDaemon interface
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go#L428-L433
train
vitessio/vitess
go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go
ApplySchemaChange
func (fmd *FakeMysqlDaemon) ApplySchemaChange(dbName string, change *tmutils.SchemaChange) (*tabletmanagerdatapb.SchemaChangeResult, error) { if fmd.ApplySchemaChangeResult == nil { return nil, fmt.Errorf("no apply schema defined") } return fmd.ApplySchemaChangeResult, nil }
go
func (fmd *FakeMysqlDaemon) ApplySchemaChange(dbName string, change *tmutils.SchemaChange) (*tabletmanagerdatapb.SchemaChangeResult, error) { if fmd.ApplySchemaChangeResult == nil { return nil, fmt.Errorf("no apply schema defined") } return fmd.ApplySchemaChangeResult, nil }
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// ApplySchemaChange is part of the MysqlDaemon interface
[ "ApplySchemaChange", "is", "part", "of", "the", "MysqlDaemon", "interface" ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go#L436-L441
train
vitessio/vitess
go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go
GetAppConnection
func (fmd *FakeMysqlDaemon) GetAppConnection(ctx context.Context) (*dbconnpool.PooledDBConnection, error) { return fmd.appPool.Get(ctx) }
go
func (fmd *FakeMysqlDaemon) GetAppConnection(ctx context.Context) (*dbconnpool.PooledDBConnection, error) { return fmd.appPool.Get(ctx) }
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// GetAppConnection is part of the MysqlDaemon interface.
[ "GetAppConnection", "is", "part", "of", "the", "MysqlDaemon", "interface", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go#L444-L446
train
vitessio/vitess
go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go
GetAllPrivsConnection
func (fmd *FakeMysqlDaemon) GetAllPrivsConnection() (*dbconnpool.DBConnection, error) { return dbconnpool.NewDBConnection(fmd.db.ConnParams(), stats.NewTimings("", "", "")) }
go
func (fmd *FakeMysqlDaemon) GetAllPrivsConnection() (*dbconnpool.DBConnection, error) { return dbconnpool.NewDBConnection(fmd.db.ConnParams(), stats.NewTimings("", "", "")) }
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// GetAllPrivsConnection is part of the MysqlDaemon interface.
[ "GetAllPrivsConnection", "is", "part", "of", "the", "MysqlDaemon", "interface", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go#L454-L456
train
vitessio/vitess
go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go
SetSemiSyncEnabled
func (fmd *FakeMysqlDaemon) SetSemiSyncEnabled(master, slave bool) error { fmd.SemiSyncMasterEnabled = master fmd.SemiSyncSlaveEnabled = slave return nil }
go
func (fmd *FakeMysqlDaemon) SetSemiSyncEnabled(master, slave bool) error { fmd.SemiSyncMasterEnabled = master fmd.SemiSyncSlaveEnabled = slave return nil }
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// SetSemiSyncEnabled is part of the MysqlDaemon interface.
[ "SetSemiSyncEnabled", "is", "part", "of", "the", "MysqlDaemon", "interface", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go#L459-L463
train
vitessio/vitess
go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go
SemiSyncEnabled
func (fmd *FakeMysqlDaemon) SemiSyncEnabled() (master, slave bool) { return fmd.SemiSyncMasterEnabled, fmd.SemiSyncSlaveEnabled }
go
func (fmd *FakeMysqlDaemon) SemiSyncEnabled() (master, slave bool) { return fmd.SemiSyncMasterEnabled, fmd.SemiSyncSlaveEnabled }
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// SemiSyncEnabled is part of the MysqlDaemon interface.
[ "SemiSyncEnabled", "is", "part", "of", "the", "MysqlDaemon", "interface", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/mysqlctl/fakemysqldaemon/fakemysqldaemon.go#L466-L468
train
vitessio/vitess
go/vt/schemamanager/plain_controller.go
NewPlainController
func NewPlainController(sqlStr string, keyspace string) *PlainController { controller := &PlainController{ sqls: make([]string, 0, 32), keyspace: keyspace, } sqls, err := sqlparser.SplitStatementToPieces(sqlStr) if err != nil { panic(err.Error()) } for _, sql := range sqls { s := strings.TrimSpace(sql) if s != "" { controller.sqls = append(controller.sqls, s) } } return controller }
go
func NewPlainController(sqlStr string, keyspace string) *PlainController { controller := &PlainController{ sqls: make([]string, 0, 32), keyspace: keyspace, } sqls, err := sqlparser.SplitStatementToPieces(sqlStr) if err != nil { panic(err.Error()) } for _, sql := range sqls { s := strings.TrimSpace(sql) if s != "" { controller.sqls = append(controller.sqls, s) } } return controller }
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// NewPlainController creates a new PlainController instance.
[ "NewPlainController", "creates", "a", "new", "PlainController", "instance", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/schemamanager/plain_controller.go#L36-L54
train
vitessio/vitess
go/vt/schemamanager/plain_controller.go
Read
func (controller *PlainController) Read(ctx context.Context) ([]string, error) { return controller.sqls, nil }
go
func (controller *PlainController) Read(ctx context.Context) ([]string, error) { return controller.sqls, nil }
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// Read reads schema changes
[ "Read", "reads", "schema", "changes" ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/schemamanager/plain_controller.go#L62-L64
train
vitessio/vitess
go/vt/schemamanager/plain_controller.go
OnReadSuccess
func (controller *PlainController) OnReadSuccess(ctx context.Context) error { log.Info("Successfully read all schema changes.") return nil }
go
func (controller *PlainController) OnReadSuccess(ctx context.Context) error { log.Info("Successfully read all schema changes.") return nil }
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// OnReadSuccess is called when schemamanager successfully // reads all sql statements.
[ "OnReadSuccess", "is", "called", "when", "schemamanager", "successfully", "reads", "all", "sql", "statements", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/schemamanager/plain_controller.go#L77-L80
train
vitessio/vitess
go/vt/schemamanager/plain_controller.go
OnReadFail
func (controller *PlainController) OnReadFail(ctx context.Context, err error) error { log.Errorf("Failed to read schema changes, error: %v\n", err) return err }
go
func (controller *PlainController) OnReadFail(ctx context.Context, err error) error { log.Errorf("Failed to read schema changes, error: %v\n", err) return err }
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// OnReadFail is called when schemamanager fails to read all sql statements.
[ "OnReadFail", "is", "called", "when", "schemamanager", "fails", "to", "read", "all", "sql", "statements", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/schemamanager/plain_controller.go#L83-L86
train
vitessio/vitess
go/vt/schemamanager/plain_controller.go
OnExecutorComplete
func (controller *PlainController) OnExecutorComplete(ctx context.Context, result *ExecuteResult) error { out, _ := json.MarshalIndent(result, "", " ") log.Infof("Executor finished, result: %s\n", string(out)) return nil }
go
func (controller *PlainController) OnExecutorComplete(ctx context.Context, result *ExecuteResult) error { out, _ := json.MarshalIndent(result, "", " ") log.Infof("Executor finished, result: %s\n", string(out)) return nil }
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// OnExecutorComplete is called when schemamanager finishes applying schema changes.
[ "OnExecutorComplete", "is", "called", "when", "schemamanager", "finishes", "applying", "schema", "changes", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/schemamanager/plain_controller.go#L101-L105
train
vitessio/vitess
go/vt/discovery/fake_healthcheck.go
SetListener
func (fhc *FakeHealthCheck) SetListener(listener HealthCheckStatsListener, sendDownEvents bool) { fhc.listener = listener }
go
func (fhc *FakeHealthCheck) SetListener(listener HealthCheckStatsListener, sendDownEvents bool) { fhc.listener = listener }
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// SetListener is not implemented.
[ "SetListener", "is", "not", "implemented", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/discovery/fake_healthcheck.go#L66-L68
train
vitessio/vitess
go/vt/discovery/fake_healthcheck.go
AddTablet
func (fhc *FakeHealthCheck) AddTablet(tablet *topodatapb.Tablet, name string) { key := TabletToMapKey(tablet) item := &fhcItem{ ts: &TabletStats{ Key: key, Tablet: tablet, Target: &querypb.Target{ Keyspace: tablet.Keyspace, Shard: tablet.Shard, TabletType: tablet.Type, }, Serving: true, Up: true, Name: name, Stats: &querypb.RealtimeStats{}, }, } fhc.mu.Lock() defer fhc.mu.Unlock() fhc.items[key] = item if fhc.listener != nil { fhc.listener.StatsUpdate(item.ts) } }
go
func (fhc *FakeHealthCheck) AddTablet(tablet *topodatapb.Tablet, name string) { key := TabletToMapKey(tablet) item := &fhcItem{ ts: &TabletStats{ Key: key, Tablet: tablet, Target: &querypb.Target{ Keyspace: tablet.Keyspace, Shard: tablet.Shard, TabletType: tablet.Type, }, Serving: true, Up: true, Name: name, Stats: &querypb.RealtimeStats{}, }, } fhc.mu.Lock() defer fhc.mu.Unlock() fhc.items[key] = item if fhc.listener != nil { fhc.listener.StatsUpdate(item.ts) } }
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// AddTablet adds the tablet and calls the listener.
[ "AddTablet", "adds", "the", "tablet", "and", "calls", "the", "listener", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/discovery/fake_healthcheck.go#L75-L100
train
vitessio/vitess
go/vt/discovery/fake_healthcheck.go
RemoveTablet
func (fhc *FakeHealthCheck) RemoveTablet(tablet *topodatapb.Tablet) { fhc.mu.Lock() defer fhc.mu.Unlock() key := TabletToMapKey(tablet) delete(fhc.items, key) }
go
func (fhc *FakeHealthCheck) RemoveTablet(tablet *topodatapb.Tablet) { fhc.mu.Lock() defer fhc.mu.Unlock() key := TabletToMapKey(tablet) delete(fhc.items, key) }
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// RemoveTablet removes the tablet.
[ "RemoveTablet", "removes", "the", "tablet", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/discovery/fake_healthcheck.go#L103-L108
train
vitessio/vitess
go/vt/discovery/fake_healthcheck.go
ReplaceTablet
func (fhc *FakeHealthCheck) ReplaceTablet(old, new *topodatapb.Tablet, name string) { fhc.RemoveTablet(old) fhc.AddTablet(new, name) }
go
func (fhc *FakeHealthCheck) ReplaceTablet(old, new *topodatapb.Tablet, name string) { fhc.RemoveTablet(old) fhc.AddTablet(new, name) }
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// ReplaceTablet removes the old tablet and adds the new.
[ "ReplaceTablet", "removes", "the", "old", "tablet", "and", "adds", "the", "new", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/discovery/fake_healthcheck.go#L111-L114
train
vitessio/vitess
go/vt/discovery/fake_healthcheck.go
CacheStatus
func (fhc *FakeHealthCheck) CacheStatus() TabletsCacheStatusList { fhc.mu.Lock() defer fhc.mu.Unlock() stats := make(TabletsCacheStatusList, 0, len(fhc.items)) for _, item := range fhc.items { stats = append(stats, &TabletsCacheStatus{ Cell: "FakeCell", Target: item.ts.Target, TabletsStats: TabletStatsList{item.ts}, }) } sort.Sort(stats) return stats }
go
func (fhc *FakeHealthCheck) CacheStatus() TabletsCacheStatusList { fhc.mu.Lock() defer fhc.mu.Unlock() stats := make(TabletsCacheStatusList, 0, len(fhc.items)) for _, item := range fhc.items { stats = append(stats, &TabletsCacheStatus{ Cell: "FakeCell", Target: item.ts.Target, TabletsStats: TabletStatsList{item.ts}, }) } sort.Sort(stats) return stats }
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// CacheStatus returns the status for each tablet
[ "CacheStatus", "returns", "the", "status", "for", "each", "tablet" ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/discovery/fake_healthcheck.go#L127-L141
train
vitessio/vitess
go/vt/discovery/fake_healthcheck.go
Reset
func (fhc *FakeHealthCheck) Reset() { fhc.mu.Lock() defer fhc.mu.Unlock() fhc.items = make(map[string]*fhcItem) }
go
func (fhc *FakeHealthCheck) Reset() { fhc.mu.Lock() defer fhc.mu.Unlock() fhc.items = make(map[string]*fhcItem) }
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// // Management methods // // Reset cleans up the internal state.
[ "Management", "methods", "Reset", "cleans", "up", "the", "internal", "state", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/discovery/fake_healthcheck.go#L153-L158
train
vitessio/vitess
go/vt/discovery/fake_healthcheck.go
AddFakeTablet
func (fhc *FakeHealthCheck) AddFakeTablet(cell, host string, port int32, keyspace, shard string, tabletType topodatapb.TabletType, serving bool, reparentTS int64, err error, connFactory func(*topodatapb.Tablet) queryservice.QueryService) queryservice.QueryService { t := topo.NewTablet(0, cell, host) t.Keyspace = keyspace t.Shard = shard t.Type = tabletType t.PortMap["vt"] = port key := TabletToMapKey(t) fhc.mu.Lock() defer fhc.mu.Unlock() item := fhc.items[key] if item == nil { item = &fhcItem{ ts: &TabletStats{ Key: key, Tablet: t, Up: true, }, } fhc.items[key] = item } item.ts.Target = &querypb.Target{ Keyspace: keyspace, Shard: shard, TabletType: tabletType, } item.ts.Serving = serving item.ts.TabletExternallyReparentedTimestamp = reparentTS item.ts.Stats = &querypb.RealtimeStats{} item.ts.LastError = err conn := connFactory(t) item.conn = conn if fhc.listener != nil { fhc.listener.StatsUpdate(item.ts) } return conn }
go
func (fhc *FakeHealthCheck) AddFakeTablet(cell, host string, port int32, keyspace, shard string, tabletType topodatapb.TabletType, serving bool, reparentTS int64, err error, connFactory func(*topodatapb.Tablet) queryservice.QueryService) queryservice.QueryService { t := topo.NewTablet(0, cell, host) t.Keyspace = keyspace t.Shard = shard t.Type = tabletType t.PortMap["vt"] = port key := TabletToMapKey(t) fhc.mu.Lock() defer fhc.mu.Unlock() item := fhc.items[key] if item == nil { item = &fhcItem{ ts: &TabletStats{ Key: key, Tablet: t, Up: true, }, } fhc.items[key] = item } item.ts.Target = &querypb.Target{ Keyspace: keyspace, Shard: shard, TabletType: tabletType, } item.ts.Serving = serving item.ts.TabletExternallyReparentedTimestamp = reparentTS item.ts.Stats = &querypb.RealtimeStats{} item.ts.LastError = err conn := connFactory(t) item.conn = conn if fhc.listener != nil { fhc.listener.StatsUpdate(item.ts) } return conn }
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// AddFakeTablet inserts a fake entry into FakeHealthCheck. // The Tablet can be talked to using the provided connection. // The Listener is called, as if AddTablet had been called. // For flexibility the connection is created via a connFactory callback
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/discovery/fake_healthcheck.go#L164-L201
train
vitessio/vitess
go/vt/discovery/fake_healthcheck.go
GetAllTablets
func (fhc *FakeHealthCheck) GetAllTablets() map[string]*topodatapb.Tablet { res := make(map[string]*topodatapb.Tablet) fhc.mu.RLock() defer fhc.mu.RUnlock() for key, t := range fhc.items { res[key] = t.ts.Tablet } return res }
go
func (fhc *FakeHealthCheck) GetAllTablets() map[string]*topodatapb.Tablet { res := make(map[string]*topodatapb.Tablet) fhc.mu.RLock() defer fhc.mu.RUnlock() for key, t := range fhc.items { res[key] = t.ts.Tablet } return res }
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// GetAllTablets returns all the tablets we have.
[ "GetAllTablets", "returns", "all", "the", "tablets", "we", "have", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/discovery/fake_healthcheck.go#L213-L221
train
vitessio/vitess
go/vt/vtgate/planbuilder/expr.go
splitAndExpression
func splitAndExpression(filters []sqlparser.Expr, node sqlparser.Expr) []sqlparser.Expr { if node == nil { return filters } switch node := node.(type) { case *sqlparser.AndExpr: filters = splitAndExpression(filters, node.Left) return splitAndExpression(filters, node.Right) case *sqlparser.ParenExpr: // If the inner expression is AndExpr, then we can remove // the parenthesis because they are unnecessary. if node, ok := node.Expr.(*sqlparser.AndExpr); ok { return splitAndExpression(filters, node) } } return append(filters, node) }
go
func splitAndExpression(filters []sqlparser.Expr, node sqlparser.Expr) []sqlparser.Expr { if node == nil { return filters } switch node := node.(type) { case *sqlparser.AndExpr: filters = splitAndExpression(filters, node.Left) return splitAndExpression(filters, node.Right) case *sqlparser.ParenExpr: // If the inner expression is AndExpr, then we can remove // the parenthesis because they are unnecessary. if node, ok := node.Expr.(*sqlparser.AndExpr); ok { return splitAndExpression(filters, node) } } return append(filters, node) }
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// splitAndExpression breaks up the Expr into AND-separated conditions // and appends them to filters, which can be shuffled and recombined // as needed.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vtgate/planbuilder/expr.go#L31-L47
train
vitessio/vitess
go/proc/proc.go
Listen
func Listen(port string) (l net.Listener, err error) { if port != "" { killPredecessor(port) } return listen(port) }
go
func Listen(port string) (l net.Listener, err error) { if port != "" { killPredecessor(port) } return listen(port) }
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// Listen tries to create a listener on the specified tcp port. // Before creating the listener, it checks to see if there is another // server already using the port. If there is one, it sends a USR1 // signal requesting the server to shutdown, and then attempts to // to create the listener.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/proc/proc.go#L43-L48
train
vitessio/vitess
go/proc/proc.go
Wait
func Wait() os.Signal { c := make(chan os.Signal, 1) signal.Notify(c, syscall.SIGTERM, syscall.SIGUSR1, syscall.SIGINT) http.HandleFunc(pidURL, func(r http.ResponseWriter, req *http.Request) { r.Write(strconv.AppendInt(nil, int64(os.Getpid()), 10)) }) return <-c }
go
func Wait() os.Signal { c := make(chan os.Signal, 1) signal.Notify(c, syscall.SIGTERM, syscall.SIGUSR1, syscall.SIGINT) http.HandleFunc(pidURL, func(r http.ResponseWriter, req *http.Request) { r.Write(strconv.AppendInt(nil, int64(os.Getpid()), 10)) }) return <-c }
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// Wait creates an HTTP handler on pidURL, and serves the current process // pid on it. It then creates a signal handler and waits for SIGTERM or // SIGUSR1, and returns when the signal is received. A new server that comes // up will query this URL. If it receives a valid response, it will send a // SIGUSR1 signal and attempt to bind to the port the current server is using.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/proc/proc.go#L55-L64
train
vitessio/vitess
go/proc/proc.go
ListenAndServe
func ListenAndServe(port string) os.Signal { l, err := Listen(port) if err != nil { log.Fatalf("%s", err) } go http.Serve(l, nil) s := Wait() l.Close() return s }
go
func ListenAndServe(port string) os.Signal { l, err := Listen(port) if err != nil { log.Fatalf("%s", err) } go http.Serve(l, nil) s := Wait() l.Close() return s }
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// ListenAndServe combines Listen and Wait to also run an http // server on the specified port. If it fails to obtain a listener, // the program is fatally terminated. The return value is the signal // received for termination
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/proc/proc.go#L70-L79
train
vitessio/vitess
go/vt/callerid/callerid.go
NewEffectiveCallerID
func NewEffectiveCallerID(principal string, component string, subComponent string) *vtrpcpb.CallerID { return &vtrpcpb.CallerID{Principal: principal, Component: component, Subcomponent: subComponent} }
go
func NewEffectiveCallerID(principal string, component string, subComponent string) *vtrpcpb.CallerID { return &vtrpcpb.CallerID{Principal: principal, Component: component, Subcomponent: subComponent} }
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// NewEffectiveCallerID creates a new vtrpcpb.CallerID with principal, component and // subComponent
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/callerid/callerid.go#L53-L55
train
vitessio/vitess
go/mysql/binlog_event_json.go
printJSONData
func printJSONData(data []byte) ([]byte, error) { // It's possible for data to be empty. If so, we have to // treat it as 'null'. // The mysql code also says why, but this wasn't reproduceable: // https://github.com/mysql/mysql-server/blob/8.0/sql/json_binary.cc#L1070 if len(data) == 0 { return []byte("'null'"), nil } result := &bytes.Buffer{} typ := data[0] if err := printJSONValue(typ, data[1:], true /* toplevel */, result); err != nil { return nil, err } return result.Bytes(), nil }
go
func printJSONData(data []byte) ([]byte, error) { // It's possible for data to be empty. If so, we have to // treat it as 'null'. // The mysql code also says why, but this wasn't reproduceable: // https://github.com/mysql/mysql-server/blob/8.0/sql/json_binary.cc#L1070 if len(data) == 0 { return []byte("'null'"), nil } result := &bytes.Buffer{} typ := data[0] if err := printJSONValue(typ, data[1:], true /* toplevel */, result); err != nil { return nil, err } return result.Bytes(), nil }
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// printJSONData parses the MySQL binary format for JSON data, and prints // the result as a string.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/mysql/binlog_event_json.go#L55-L69
train
vitessio/vitess
go/vt/vttablet/tabletserver/status.go
AddStatusPart
func (tsv *TabletServer) AddStatusPart() { servenv.AddStatusPart("Queryservice", queryserviceStatusTemplate, func() interface{} { status := queryserviceStatus{ State: tsv.GetState(), History: tsv.history.Records(), } rates := tabletenv.QPSRates.Get() if qps, ok := rates["All"]; ok && len(qps) > 0 { status.CurrentQPS = qps[0] } return status }) }
go
func (tsv *TabletServer) AddStatusPart() { servenv.AddStatusPart("Queryservice", queryserviceStatusTemplate, func() interface{} { status := queryserviceStatus{ State: tsv.GetState(), History: tsv.history.Records(), } rates := tabletenv.QPSRates.Get() if qps, ok := rates["All"]; ok && len(qps) > 0 { status.CurrentQPS = qps[0] } return status }) }
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// AddStatusPart registers the status part for the status page.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vttablet/tabletserver/status.go#L130-L142
train
vitessio/vitess
go/trace/utils.go
LogErrorsWhenClosing
func LogErrorsWhenClosing(in io.Closer) func() { return func() { err := in.Close() if err != nil { log.Error(err) } } }
go
func LogErrorsWhenClosing(in io.Closer) func() { return func() { err := in.Close() if err != nil { log.Error(err) } } }
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// LogErrorsWhenClosing will close the provided Closer, and log any errors it generates
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/trace/utils.go#L26-L33
train
vitessio/vitess
go/vt/mysqlctl/mycnf_flag.go
RegisterFlags
func RegisterFlags() { flagServerID = flag.Int("mycnf_server_id", 0, "mysql server id of the server (if specified, mycnf-file will be ignored)") flagMysqlPort = flag.Int("mycnf_mysql_port", 0, "port mysql is listening on") flagDataDir = flag.String("mycnf_data_dir", "", "data directory for mysql") flagInnodbDataHomeDir = flag.String("mycnf_innodb_data_home_dir", "", "Innodb data home directory") flagInnodbLogGroupHomeDir = flag.String("mycnf_innodb_log_group_home_dir", "", "Innodb log group home directory") flagSocketFile = flag.String("mycnf_socket_file", "", "mysql socket file") flagGeneralLogPath = flag.String("mycnf_general_log_path", "", "mysql general log path") flagErrorLogPath = flag.String("mycnf_error_log_path", "", "mysql error log path") flagSlowLogPath = flag.String("mycnf_slow_log_path", "", "mysql slow query log path") flagRelayLogPath = flag.String("mycnf_relay_log_path", "", "mysql relay log path") flagRelayLogIndexPath = flag.String("mycnf_relay_log_index_path", "", "mysql relay log index path") flagRelayLogInfoPath = flag.String("mycnf_relay_log_info_path", "", "mysql relay log info path") flagBinLogPath = flag.String("mycnf_bin_log_path", "", "mysql binlog path") flagMasterInfoFile = flag.String("mycnf_master_info_file", "", "mysql master.info file") flagPidFile = flag.String("mycnf_pid_file", "", "mysql pid file") flagTmpDir = flag.String("mycnf_tmp_dir", "", "mysql tmp directory") flagSlaveLoadTmpDir = flag.String("mycnf_slave_load_tmp_dir", "", "slave load tmp directory") flagMycnfFile = flag.String("mycnf-file", "", "path to my.cnf, if reading all config params from there") }
go
func RegisterFlags() { flagServerID = flag.Int("mycnf_server_id", 0, "mysql server id of the server (if specified, mycnf-file will be ignored)") flagMysqlPort = flag.Int("mycnf_mysql_port", 0, "port mysql is listening on") flagDataDir = flag.String("mycnf_data_dir", "", "data directory for mysql") flagInnodbDataHomeDir = flag.String("mycnf_innodb_data_home_dir", "", "Innodb data home directory") flagInnodbLogGroupHomeDir = flag.String("mycnf_innodb_log_group_home_dir", "", "Innodb log group home directory") flagSocketFile = flag.String("mycnf_socket_file", "", "mysql socket file") flagGeneralLogPath = flag.String("mycnf_general_log_path", "", "mysql general log path") flagErrorLogPath = flag.String("mycnf_error_log_path", "", "mysql error log path") flagSlowLogPath = flag.String("mycnf_slow_log_path", "", "mysql slow query log path") flagRelayLogPath = flag.String("mycnf_relay_log_path", "", "mysql relay log path") flagRelayLogIndexPath = flag.String("mycnf_relay_log_index_path", "", "mysql relay log index path") flagRelayLogInfoPath = flag.String("mycnf_relay_log_info_path", "", "mysql relay log info path") flagBinLogPath = flag.String("mycnf_bin_log_path", "", "mysql binlog path") flagMasterInfoFile = flag.String("mycnf_master_info_file", "", "mysql master.info file") flagPidFile = flag.String("mycnf_pid_file", "", "mysql pid file") flagTmpDir = flag.String("mycnf_tmp_dir", "", "mysql tmp directory") flagSlaveLoadTmpDir = flag.String("mycnf_slave_load_tmp_dir", "", "slave load tmp directory") flagMycnfFile = flag.String("mycnf-file", "", "path to my.cnf, if reading all config params from there") }
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// RegisterFlags registers the command line flags for // specifying the values of a mycnf config file. See NewMycnfFromFlags // to get the supported modes.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/mysqlctl/mycnf_flag.go#L56-L76
train
vitessio/vitess
go/stats/timings.go
NewTimings
func NewTimings(name, help, label string, categories ...string) *Timings { t := &Timings{ histograms: make(map[string]*Histogram), help: help, label: label, } for _, cat := range categories { t.histograms[cat] = NewGenericHistogram("", "", bucketCutoffs, bucketLabels, "Count", "Time") } if name != "" { publish(name, t) } return t }
go
func NewTimings(name, help, label string, categories ...string) *Timings { t := &Timings{ histograms: make(map[string]*Histogram), help: help, label: label, } for _, cat := range categories { t.histograms[cat] = NewGenericHistogram("", "", bucketCutoffs, bucketLabels, "Count", "Time") } if name != "" { publish(name, t) } return t }
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// NewTimings creates a new Timings object, and publishes it if name is set. // categories is an optional list of categories to initialize to 0. // Categories that aren't initialized will be missing from the map until the // first time they are updated.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/stats/timings.go#L48-L62
train
vitessio/vitess
go/stats/timings.go
safeJoinLabels
func safeJoinLabels(labels []string) string { sanitizedLabels := make([]string, len(labels)) for idx, label := range labels { sanitizedLabels[idx] = safeLabel(label) } return strings.Join(sanitizedLabels, ".") }
go
func safeJoinLabels(labels []string) string { sanitizedLabels := make([]string, len(labels)) for idx, label := range labels { sanitizedLabels[idx] = safeLabel(label) } return strings.Join(sanitizedLabels, ".") }
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// safeJoinLabels joins the label values with ".", but first replaces any existing // "." characters in the labels with the proper replacement, to avoid issues parsing // them apart later.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/stats/timings.go#L214-L220
train
vitessio/vitess
go/vt/vtgate/buffer/buffer.go
mode
func (b *Buffer) mode(keyspace, shard string) bufferMode { // Actual buffering is enabled if // a) no keyspaces and shards were listed in particular, if *enabled && len(b.keyspaces) == 0 && len(b.shards) == 0 { // No explicit whitelist given i.e. all shards should be buffered. return bufferEnabled } // b) or this keyspace is listed, if b.keyspaces[keyspace] { return bufferEnabled } // c) or this shard is listed. keyspaceShard := topoproto.KeyspaceShardString(keyspace, shard) if b.shards[keyspaceShard] { return bufferEnabled } if *enabledDryRun { return bufferDryRun } return bufferDisabled }
go
func (b *Buffer) mode(keyspace, shard string) bufferMode { // Actual buffering is enabled if // a) no keyspaces and shards were listed in particular, if *enabled && len(b.keyspaces) == 0 && len(b.shards) == 0 { // No explicit whitelist given i.e. all shards should be buffered. return bufferEnabled } // b) or this keyspace is listed, if b.keyspaces[keyspace] { return bufferEnabled } // c) or this shard is listed. keyspaceShard := topoproto.KeyspaceShardString(keyspace, shard) if b.shards[keyspaceShard] { return bufferEnabled } if *enabledDryRun { return bufferDryRun } return bufferDisabled }
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// mode determines for the given keyspace and shard if buffering, dry-run // buffering or no buffering at all should be enabled.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vtgate/buffer/buffer.go#L158-L180
train
vitessio/vitess
go/vt/vtgate/buffer/buffer.go
StatsUpdate
func (b *Buffer) StatsUpdate(ts *discovery.TabletStats) { if ts.Target.TabletType != topodatapb.TabletType_MASTER { panic(fmt.Sprintf("BUG: non MASTER TabletStats object must not be forwarded: %#v", ts)) } timestamp := ts.TabletExternallyReparentedTimestamp if timestamp == 0 { // Masters where TabletExternallyReparented was never called will return 0. // Ignore them. return } sb := b.getOrCreateBuffer(ts.Target.Keyspace, ts.Target.Shard) if sb == nil { // Buffer is shut down. Ignore all calls. return } sb.recordExternallyReparentedTimestamp(timestamp, ts.Tablet.Alias) }
go
func (b *Buffer) StatsUpdate(ts *discovery.TabletStats) { if ts.Target.TabletType != topodatapb.TabletType_MASTER { panic(fmt.Sprintf("BUG: non MASTER TabletStats object must not be forwarded: %#v", ts)) } timestamp := ts.TabletExternallyReparentedTimestamp if timestamp == 0 { // Masters where TabletExternallyReparented was never called will return 0. // Ignore them. return } sb := b.getOrCreateBuffer(ts.Target.Keyspace, ts.Target.Shard) if sb == nil { // Buffer is shut down. Ignore all calls. return } sb.recordExternallyReparentedTimestamp(timestamp, ts.Tablet.Alias) }
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// StatsUpdate keeps track of the "tablet_externally_reparented_timestamp" of // each master. This way we can detect the end of a failover. // It is part of the discovery.HealthCheckStatsListener interface.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vtgate/buffer/buffer.go#L219-L237
train
vitessio/vitess
go/vt/vtgate/buffer/buffer.go
getOrCreateBuffer
func (b *Buffer) getOrCreateBuffer(keyspace, shard string) *shardBuffer { key := topoproto.KeyspaceShardString(keyspace, shard) b.mu.RLock() sb, ok := b.buffers[key] stopped := b.stopped b.mu.RUnlock() if stopped { return nil } if ok { return sb } b.mu.Lock() defer b.mu.Unlock() // Look it up again because it could have been created in the meantime. sb, ok = b.buffers[key] if !ok { sb = newShardBuffer(b.mode(keyspace, shard), keyspace, shard, b.now, b.bufferSizeSema) b.buffers[key] = sb } return sb }
go
func (b *Buffer) getOrCreateBuffer(keyspace, shard string) *shardBuffer { key := topoproto.KeyspaceShardString(keyspace, shard) b.mu.RLock() sb, ok := b.buffers[key] stopped := b.stopped b.mu.RUnlock() if stopped { return nil } if ok { return sb } b.mu.Lock() defer b.mu.Unlock() // Look it up again because it could have been created in the meantime. sb, ok = b.buffers[key] if !ok { sb = newShardBuffer(b.mode(keyspace, shard), keyspace, shard, b.now, b.bufferSizeSema) b.buffers[key] = sb } return sb }
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// getOrCreateBuffer returns the ShardBuffer for the given keyspace and shard. // It returns nil if Buffer is shut down and all calls should be ignored.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vtgate/buffer/buffer.go#L272-L295
train
vitessio/vitess
go/vt/topo/shard.go
addCells
func addCells(left, right []string) []string { if len(left) == 0 || len(right) == 0 { return nil } for _, cell := range right { if !InCellList(cell, left) { left = append(left, cell) } } return left }
go
func addCells(left, right []string) []string { if len(left) == 0 || len(right) == 0 { return nil } for _, cell := range right { if !InCellList(cell, left) { left = append(left, cell) } } return left }
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// Functions for dealing with shard representations in topology. // addCells will merge both cells list, settling on nil if either list is empty
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/topo/shard.go#L48-L59
train
vitessio/vitess
go/vt/topo/shard.go
removeCellsFromList
func removeCellsFromList(toRemove, fullList []string) []string { leftoverCells := make([]string, 0) for _, cell := range fullList { if !InCellList(cell, toRemove) { leftoverCells = append(leftoverCells, cell) } } return leftoverCells }
go
func removeCellsFromList(toRemove, fullList []string) []string { leftoverCells := make([]string, 0) for _, cell := range fullList { if !InCellList(cell, toRemove) { leftoverCells = append(leftoverCells, cell) } } return leftoverCells }
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// removeCellsFromList will remove the cells from the provided list. It returns // the new list, and a boolean that indicates the returned list is empty.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/topo/shard.go#L63-L71
train
vitessio/vitess
go/vt/topo/shard.go
removeCells
func removeCells(cells, toRemove, fullList []string) ([]string, bool) { // The assumption here is we already migrated something, // and we're reverting that part. So we're gonna remove // records only. leftoverCells := make([]string, 0, len(cells)) if len(cells) == 0 { // we migrated all the cells already, take the full list // and remove all the ones we're not reverting for _, cell := range fullList { if !InCellList(cell, toRemove) { leftoverCells = append(leftoverCells, cell) } } } else { // we migrated a subset of the cells, // remove the ones we're reverting for _, cell := range cells { if !InCellList(cell, toRemove) { leftoverCells = append(leftoverCells, cell) } } } if len(leftoverCells) == 0 { // we don't have any cell left, we need to clear this record return nil, true } return leftoverCells, false }
go
func removeCells(cells, toRemove, fullList []string) ([]string, bool) { // The assumption here is we already migrated something, // and we're reverting that part. So we're gonna remove // records only. leftoverCells := make([]string, 0, len(cells)) if len(cells) == 0 { // we migrated all the cells already, take the full list // and remove all the ones we're not reverting for _, cell := range fullList { if !InCellList(cell, toRemove) { leftoverCells = append(leftoverCells, cell) } } } else { // we migrated a subset of the cells, // remove the ones we're reverting for _, cell := range cells { if !InCellList(cell, toRemove) { leftoverCells = append(leftoverCells, cell) } } } if len(leftoverCells) == 0 { // we don't have any cell left, we need to clear this record return nil, true } return leftoverCells, false }
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// removeCells will remove the cells from the provided list. It returns // the new list, and a boolean that indicates the returned list is empty.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/topo/shard.go#L75-L104
train
vitessio/vitess
go/vt/topo/shard.go
ValidateShardName
func ValidateShardName(shard string) (string, *topodatapb.KeyRange, error) { if !IsShardUsingRangeBasedSharding(shard) { return shard, nil, nil } parts := strings.Split(shard, "-") if len(parts) != 2 { return "", nil, vterrors.Errorf(vtrpc.Code_INVALID_ARGUMENT, "invalid shardId, can only contain one '-': %v", shard) } keyRange, err := key.ParseKeyRangeParts(parts[0], parts[1]) if err != nil { return "", nil, err } if len(keyRange.End) > 0 && string(keyRange.Start) >= string(keyRange.End) { return "", nil, vterrors.Errorf(vtrpc.Code_INVALID_ARGUMENT, "out of order keys: %v is not strictly smaller than %v", hex.EncodeToString(keyRange.Start), hex.EncodeToString(keyRange.End)) } return strings.ToLower(shard), keyRange, nil }
go
func ValidateShardName(shard string) (string, *topodatapb.KeyRange, error) { if !IsShardUsingRangeBasedSharding(shard) { return shard, nil, nil } parts := strings.Split(shard, "-") if len(parts) != 2 { return "", nil, vterrors.Errorf(vtrpc.Code_INVALID_ARGUMENT, "invalid shardId, can only contain one '-': %v", shard) } keyRange, err := key.ParseKeyRangeParts(parts[0], parts[1]) if err != nil { return "", nil, err } if len(keyRange.End) > 0 && string(keyRange.Start) >= string(keyRange.End) { return "", nil, vterrors.Errorf(vtrpc.Code_INVALID_ARGUMENT, "out of order keys: %v is not strictly smaller than %v", hex.EncodeToString(keyRange.Start), hex.EncodeToString(keyRange.End)) } return strings.ToLower(shard), keyRange, nil }
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// ValidateShardName takes a shard name and sanitizes it, and also returns // the KeyRange.
[ "ValidateShardName", "takes", "a", "shard", "name", "and", "sanitizes", "it", "and", "also", "returns", "the", "KeyRange", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/topo/shard.go#L114-L134
train
vitessio/vitess
go/vt/topo/shard.go
GetShard
func (ts *Server) GetShard(ctx context.Context, keyspace, shard string) (*ShardInfo, error) { span, ctx := trace.NewSpan(ctx, "TopoServer.GetShard") span.Annotate("keyspace", keyspace) span.Annotate("shard", shard) defer span.Finish() shardPath := path.Join(KeyspacesPath, keyspace, ShardsPath, shard, ShardFile) data, version, err := ts.globalCell.Get(ctx, shardPath) if err != nil { return nil, err } value := &topodatapb.Shard{} if err = proto.Unmarshal(data, value); err != nil { return nil, vterrors.Wrapf(err, "GetShard(%v,%v): bad shard data", keyspace, shard) } return &ShardInfo{ keyspace: keyspace, shardName: shard, version: version, Shard: value, }, nil }
go
func (ts *Server) GetShard(ctx context.Context, keyspace, shard string) (*ShardInfo, error) { span, ctx := trace.NewSpan(ctx, "TopoServer.GetShard") span.Annotate("keyspace", keyspace) span.Annotate("shard", shard) defer span.Finish() shardPath := path.Join(KeyspacesPath, keyspace, ShardsPath, shard, ShardFile) data, version, err := ts.globalCell.Get(ctx, shardPath) if err != nil { return nil, err } value := &topodatapb.Shard{} if err = proto.Unmarshal(data, value); err != nil { return nil, vterrors.Wrapf(err, "GetShard(%v,%v): bad shard data", keyspace, shard) } return &ShardInfo{ keyspace: keyspace, shardName: shard, version: version, Shard: value, }, nil }
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// GetShard is a high level function to read shard data. // It generates trace spans.
[ "GetShard", "is", "a", "high", "level", "function", "to", "read", "shard", "data", ".", "It", "generates", "trace", "spans", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/topo/shard.go#L179-L201
train
vitessio/vitess
go/vt/topo/shard.go
updateShard
func (ts *Server) updateShard(ctx context.Context, si *ShardInfo) error { span, ctx := trace.NewSpan(ctx, "TopoServer.UpdateShard") span.Annotate("keyspace", si.keyspace) span.Annotate("shard", si.shardName) defer span.Finish() data, err := proto.Marshal(si.Shard) if err != nil { return err } shardPath := path.Join(KeyspacesPath, si.keyspace, ShardsPath, si.shardName, ShardFile) newVersion, err := ts.globalCell.Update(ctx, shardPath, data, si.version) if err != nil { return err } si.version = newVersion event.Dispatch(&events.ShardChange{ KeyspaceName: si.Keyspace(), ShardName: si.ShardName(), Shard: si.Shard, Status: "updated", }) return nil }
go
func (ts *Server) updateShard(ctx context.Context, si *ShardInfo) error { span, ctx := trace.NewSpan(ctx, "TopoServer.UpdateShard") span.Annotate("keyspace", si.keyspace) span.Annotate("shard", si.shardName) defer span.Finish() data, err := proto.Marshal(si.Shard) if err != nil { return err } shardPath := path.Join(KeyspacesPath, si.keyspace, ShardsPath, si.shardName, ShardFile) newVersion, err := ts.globalCell.Update(ctx, shardPath, data, si.version) if err != nil { return err } si.version = newVersion event.Dispatch(&events.ShardChange{ KeyspaceName: si.Keyspace(), ShardName: si.ShardName(), Shard: si.Shard, Status: "updated", }) return nil }
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// updateShard updates the shard data, with the right version. // It also creates a span, and dispatches the event.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/topo/shard.go#L205-L229
train
vitessio/vitess
go/vt/topo/shard.go
UpdateShardFields
func (ts *Server) UpdateShardFields(ctx context.Context, keyspace, shard string, update func(*ShardInfo) error) (*ShardInfo, error) { for { si, err := ts.GetShard(ctx, keyspace, shard) if err != nil { return nil, err } if err = update(si); err != nil { if IsErrType(err, NoUpdateNeeded) { return nil, nil } return nil, err } if err = ts.updateShard(ctx, si); !IsErrType(err, BadVersion) { return si, err } } }
go
func (ts *Server) UpdateShardFields(ctx context.Context, keyspace, shard string, update func(*ShardInfo) error) (*ShardInfo, error) { for { si, err := ts.GetShard(ctx, keyspace, shard) if err != nil { return nil, err } if err = update(si); err != nil { if IsErrType(err, NoUpdateNeeded) { return nil, nil } return nil, err } if err = ts.updateShard(ctx, si); !IsErrType(err, BadVersion) { return si, err } } }
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// UpdateShardFields is a high level helper to read a shard record, call an // update function on it, and then write it back. If the write fails due to // a version mismatch, it will re-read the record and retry the update. // If the update succeeds, it returns the updated ShardInfo. // If the update method returns ErrNoUpdateNeeded, nothing is written, // and nil,nil is returned. // // Note the callback method takes a ShardInfo, so it can get the // keyspace and shard from it, or use all the ShardInfo methods.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/topo/shard.go#L240-L256
train
vitessio/vitess
go/vt/topo/shard.go
CreateShard
func (ts *Server) CreateShard(ctx context.Context, keyspace, shard string) (err error) { // Lock the keyspace, because we'll be looking at ServedTypes. ctx, unlock, lockErr := ts.LockKeyspace(ctx, keyspace, "CreateShard") if lockErr != nil { return lockErr } defer unlock(&err) // validate parameters name, keyRange, err := ValidateShardName(shard) if err != nil { return err } value := &topodatapb.Shard{ KeyRange: keyRange, } isMasterServing := true // start the shard IsMasterServing. If it overlaps with // other shards for some serving types, remove them. if IsShardUsingRangeBasedSharding(name) { // if we are using range-based sharding, we don't want // overlapping shards to all serve and confuse the clients. sis, err := ts.FindAllShardsInKeyspace(ctx, keyspace) if err != nil && !IsErrType(err, NoNode) { return err } for _, si := range sis { if si.KeyRange == nil || key.KeyRangesIntersect(si.KeyRange, keyRange) { isMasterServing = false } } } value.IsMasterServing = isMasterServing // Marshal and save. data, err := proto.Marshal(value) if err != nil { return err } shardPath := path.Join(KeyspacesPath, keyspace, ShardsPath, shard, ShardFile) if _, err := ts.globalCell.Create(ctx, shardPath, data); err != nil { // Return error as is, we need to propagate // ErrNodeExists for instance. return err } event.Dispatch(&events.ShardChange{ KeyspaceName: keyspace, ShardName: shard, Shard: value, Status: "created", }) return nil }
go
func (ts *Server) CreateShard(ctx context.Context, keyspace, shard string) (err error) { // Lock the keyspace, because we'll be looking at ServedTypes. ctx, unlock, lockErr := ts.LockKeyspace(ctx, keyspace, "CreateShard") if lockErr != nil { return lockErr } defer unlock(&err) // validate parameters name, keyRange, err := ValidateShardName(shard) if err != nil { return err } value := &topodatapb.Shard{ KeyRange: keyRange, } isMasterServing := true // start the shard IsMasterServing. If it overlaps with // other shards for some serving types, remove them. if IsShardUsingRangeBasedSharding(name) { // if we are using range-based sharding, we don't want // overlapping shards to all serve and confuse the clients. sis, err := ts.FindAllShardsInKeyspace(ctx, keyspace) if err != nil && !IsErrType(err, NoNode) { return err } for _, si := range sis { if si.KeyRange == nil || key.KeyRangesIntersect(si.KeyRange, keyRange) { isMasterServing = false } } } value.IsMasterServing = isMasterServing // Marshal and save. data, err := proto.Marshal(value) if err != nil { return err } shardPath := path.Join(KeyspacesPath, keyspace, ShardsPath, shard, ShardFile) if _, err := ts.globalCell.Create(ctx, shardPath, data); err != nil { // Return error as is, we need to propagate // ErrNodeExists for instance. return err } event.Dispatch(&events.ShardChange{ KeyspaceName: keyspace, ShardName: shard, Shard: value, Status: "created", }) return nil }
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// CreateShard creates a new shard and tries to fill in the right information. // This will lock the Keyspace, as we may be looking at other shard servedTypes. // Using GetOrCreateShard is probably a better idea for most use cases.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/topo/shard.go#L261-L319
train
vitessio/vitess
go/vt/topo/shard.go
GetOrCreateShard
func (ts *Server) GetOrCreateShard(ctx context.Context, keyspace, shard string) (si *ShardInfo, err error) { si, err = ts.GetShard(ctx, keyspace, shard) if !IsErrType(err, NoNode) { return } // create the keyspace, maybe it already exists if err = ts.CreateKeyspace(ctx, keyspace, &topodatapb.Keyspace{}); err != nil && !IsErrType(err, NodeExists) { return nil, vterrors.Wrapf(err, "CreateKeyspace(%v) failed", keyspace) } // now try to create with the lock, may already exist if err = ts.CreateShard(ctx, keyspace, shard); err != nil && !IsErrType(err, NodeExists) { return nil, vterrors.Wrapf(err, "CreateShard(%v/%v) failed", keyspace, shard) } // try to read the shard again, maybe someone created it // in between the original GetShard and the LockKeyspace return ts.GetShard(ctx, keyspace, shard) }
go
func (ts *Server) GetOrCreateShard(ctx context.Context, keyspace, shard string) (si *ShardInfo, err error) { si, err = ts.GetShard(ctx, keyspace, shard) if !IsErrType(err, NoNode) { return } // create the keyspace, maybe it already exists if err = ts.CreateKeyspace(ctx, keyspace, &topodatapb.Keyspace{}); err != nil && !IsErrType(err, NodeExists) { return nil, vterrors.Wrapf(err, "CreateKeyspace(%v) failed", keyspace) } // now try to create with the lock, may already exist if err = ts.CreateShard(ctx, keyspace, shard); err != nil && !IsErrType(err, NodeExists) { return nil, vterrors.Wrapf(err, "CreateShard(%v/%v) failed", keyspace, shard) } // try to read the shard again, maybe someone created it // in between the original GetShard and the LockKeyspace return ts.GetShard(ctx, keyspace, shard) }
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// GetOrCreateShard will return the shard object, or create one if it doesn't // already exist. Note the shard creation is protected by a keyspace Lock.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/topo/shard.go#L323-L342
train
vitessio/vitess
go/vt/topo/shard.go
DeleteShard
func (ts *Server) DeleteShard(ctx context.Context, keyspace, shard string) error { shardPath := path.Join(KeyspacesPath, keyspace, ShardsPath, shard, ShardFile) if err := ts.globalCell.Delete(ctx, shardPath, nil); err != nil { return err } event.Dispatch(&events.ShardChange{ KeyspaceName: keyspace, ShardName: shard, Shard: nil, Status: "deleted", }) return nil }
go
func (ts *Server) DeleteShard(ctx context.Context, keyspace, shard string) error { shardPath := path.Join(KeyspacesPath, keyspace, ShardsPath, shard, ShardFile) if err := ts.globalCell.Delete(ctx, shardPath, nil); err != nil { return err } event.Dispatch(&events.ShardChange{ KeyspaceName: keyspace, ShardName: shard, Shard: nil, Status: "deleted", }) return nil }
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// DeleteShard wraps the underlying conn.Delete // and dispatches the event.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/topo/shard.go#L346-L358
train
vitessio/vitess
go/vt/topo/shard.go
GetTabletControl
func (si *ShardInfo) GetTabletControl(tabletType topodatapb.TabletType) *topodatapb.Shard_TabletControl { for _, tc := range si.TabletControls { if tc.TabletType == tabletType { return tc } } return nil }
go
func (si *ShardInfo) GetTabletControl(tabletType topodatapb.TabletType) *topodatapb.Shard_TabletControl { for _, tc := range si.TabletControls { if tc.TabletType == tabletType { return tc } } return nil }
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// GetTabletControl returns the Shard_TabletControl for the given tablet type, // or nil if it is not in the map.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/topo/shard.go#L362-L369
train
vitessio/vitess
go/vt/topo/shard.go
GetServedType
func (si *ShardInfo) GetServedType(tabletType topodatapb.TabletType) *topodatapb.Shard_ServedType { for _, st := range si.ServedTypes { if st.TabletType == tabletType { return st } } return nil }
go
func (si *ShardInfo) GetServedType(tabletType topodatapb.TabletType) *topodatapb.Shard_ServedType { for _, st := range si.ServedTypes { if st.TabletType == tabletType { return st } } return nil }
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// GetServedType returns the Shard_ServedType for a TabletType, or nil
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/topo/shard.go#L433-L440
train
vitessio/vitess
go/vt/topo/shard.go
InCellList
func InCellList(cell string, cells []string) bool { if len(cells) == 0 { return true } for _, c := range cells { if c == cell { return true } } return false }
go
func InCellList(cell string, cells []string) bool { if len(cells) == 0 { return true } for _, c := range cells { if c == cell { return true } } return false }
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// // Utility functions for shards // // InCellList returns true if the cell list is empty, // or if the passed cell is in the cell list.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/topo/shard.go#L448-L458
train
vitessio/vitess
go/vt/topo/shard.go
FindAllTabletAliasesInShard
func (ts *Server) FindAllTabletAliasesInShard(ctx context.Context, keyspace, shard string) ([]*topodatapb.TabletAlias, error) { return ts.FindAllTabletAliasesInShardByCell(ctx, keyspace, shard, nil) }
go
func (ts *Server) FindAllTabletAliasesInShard(ctx context.Context, keyspace, shard string) ([]*topodatapb.TabletAlias, error) { return ts.FindAllTabletAliasesInShardByCell(ctx, keyspace, shard, nil) }
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// FindAllTabletAliasesInShard uses the replication graph to find all the // tablet aliases in the given shard. // // It can return ErrPartialResult if some cells were not fetched, // in which case the result only contains the cells that were fetched. // // The tablet aliases are sorted by cell, then by UID.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/topo/shard.go#L467-L469
train
vitessio/vitess
go/vt/topo/shard.go
FindAllTabletAliasesInShardByCell
func (ts *Server) FindAllTabletAliasesInShardByCell(ctx context.Context, keyspace, shard string, cells []string) ([]*topodatapb.TabletAlias, error) { span, ctx := trace.NewSpan(ctx, "topo.FindAllTabletAliasesInShardbyCell") span.Annotate("keyspace", keyspace) span.Annotate("shard", shard) span.Annotate("num_cells", len(cells)) defer span.Finish() ctx = trace.NewContext(ctx, span) var err error // The caller intents to all cells if len(cells) == 0 { cells, err = ts.GetCellInfoNames(ctx) if err != nil { return nil, err } } // read the shard information to find the cells si, err := ts.GetShard(ctx, keyspace, shard) if err != nil { return nil, err } resultAsMap := make(map[string]*topodatapb.TabletAlias) if si.HasMaster() { if InCellList(si.MasterAlias.Cell, cells) { resultAsMap[topoproto.TabletAliasString(si.MasterAlias)] = si.MasterAlias } } // read the replication graph in each cell and add all found tablets wg := sync.WaitGroup{} mutex := sync.Mutex{} rec := concurrency.AllErrorRecorder{} result := make([]*topodatapb.TabletAlias, 0, len(resultAsMap)) for _, cell := range cells { wg.Add(1) go func(cell string) { defer wg.Done() sri, err := ts.GetShardReplication(ctx, cell, keyspace, shard) switch { case err == nil: mutex.Lock() for _, node := range sri.Nodes { resultAsMap[topoproto.TabletAliasString(node.TabletAlias)] = node.TabletAlias } mutex.Unlock() case IsErrType(err, NoNode): // There is no shard replication for this shard in this cell. NOOP default: rec.RecordError(vterrors.Wrap(err, fmt.Sprintf("GetShardReplication(%v, %v, %v) failed.", cell, keyspace, shard))) return } }(cell) } wg.Wait() err = nil if rec.HasErrors() { log.Warningf("FindAllTabletAliasesInShard(%v,%v): got partial result: %v", keyspace, shard, rec.Error()) err = NewError(PartialResult, shard) } for _, a := range resultAsMap { v := *a result = append(result, &v) } sort.Sort(topoproto.TabletAliasList(result)) return result, err }
go
func (ts *Server) FindAllTabletAliasesInShardByCell(ctx context.Context, keyspace, shard string, cells []string) ([]*topodatapb.TabletAlias, error) { span, ctx := trace.NewSpan(ctx, "topo.FindAllTabletAliasesInShardbyCell") span.Annotate("keyspace", keyspace) span.Annotate("shard", shard) span.Annotate("num_cells", len(cells)) defer span.Finish() ctx = trace.NewContext(ctx, span) var err error // The caller intents to all cells if len(cells) == 0 { cells, err = ts.GetCellInfoNames(ctx) if err != nil { return nil, err } } // read the shard information to find the cells si, err := ts.GetShard(ctx, keyspace, shard) if err != nil { return nil, err } resultAsMap := make(map[string]*topodatapb.TabletAlias) if si.HasMaster() { if InCellList(si.MasterAlias.Cell, cells) { resultAsMap[topoproto.TabletAliasString(si.MasterAlias)] = si.MasterAlias } } // read the replication graph in each cell and add all found tablets wg := sync.WaitGroup{} mutex := sync.Mutex{} rec := concurrency.AllErrorRecorder{} result := make([]*topodatapb.TabletAlias, 0, len(resultAsMap)) for _, cell := range cells { wg.Add(1) go func(cell string) { defer wg.Done() sri, err := ts.GetShardReplication(ctx, cell, keyspace, shard) switch { case err == nil: mutex.Lock() for _, node := range sri.Nodes { resultAsMap[topoproto.TabletAliasString(node.TabletAlias)] = node.TabletAlias } mutex.Unlock() case IsErrType(err, NoNode): // There is no shard replication for this shard in this cell. NOOP default: rec.RecordError(vterrors.Wrap(err, fmt.Sprintf("GetShardReplication(%v, %v, %v) failed.", cell, keyspace, shard))) return } }(cell) } wg.Wait() err = nil if rec.HasErrors() { log.Warningf("FindAllTabletAliasesInShard(%v,%v): got partial result: %v", keyspace, shard, rec.Error()) err = NewError(PartialResult, shard) } for _, a := range resultAsMap { v := *a result = append(result, &v) } sort.Sort(topoproto.TabletAliasList(result)) return result, err }
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// FindAllTabletAliasesInShardByCell uses the replication graph to find all the // tablet aliases in the given shard. // // It can return ErrPartialResult if some cells were not fetched, // in which case the result only contains the cells that were fetched. // // The tablet aliases are sorted by cell, then by UID.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/topo/shard.go#L478-L546
train
vitessio/vitess
go/mysql/gtid.go
ParseGTID
func ParseGTID(flavor, value string) (GTID, error) { parser := gtidParsers[flavor] if parser == nil { return nil, vterrors.Errorf(vtrpc.Code_INTERNAL, "parse error: unknown GTID flavor %#v", flavor) } return parser(value) }
go
func ParseGTID(flavor, value string) (GTID, error) { parser := gtidParsers[flavor] if parser == nil { return nil, vterrors.Errorf(vtrpc.Code_INTERNAL, "parse error: unknown GTID flavor %#v", flavor) } return parser(value) }
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// ParseGTID calls the GTID parser for the specified flavor.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/mysql/gtid.go#L63-L69
train
vitessio/vitess
go/mysql/gtid.go
MustParseGTID
func MustParseGTID(flavor, value string) GTID { gtid, err := ParseGTID(flavor, value) if err != nil { panic(err) } return gtid }
go
func MustParseGTID(flavor, value string) GTID { gtid, err := ParseGTID(flavor, value) if err != nil { panic(err) } return gtid }
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// MustParseGTID calls ParseGTID and panics on error.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/mysql/gtid.go#L72-L78
train
vitessio/vitess
go/mysql/gtid.go
EncodeGTID
func EncodeGTID(gtid GTID) string { if gtid == nil { return "" } return fmt.Sprintf("%s/%s", gtid.Flavor(), gtid.String()) }
go
func EncodeGTID(gtid GTID) string { if gtid == nil { return "" } return fmt.Sprintf("%s/%s", gtid.Flavor(), gtid.String()) }
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// EncodeGTID returns a string that contains both the flavor and value of the // GTID, so that the correct parser can be selected when that string is passed // to DecodeGTID.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/mysql/gtid.go#L83-L89
train
vitessio/vitess
go/mysql/gtid.go
DecodeGTID
func DecodeGTID(s string) (GTID, error) { if s == "" { return nil, nil } parts := strings.SplitN(s, "/", 2) if len(parts) != 2 { // There is no flavor. Try looking for a default parser. return ParseGTID("", s) } return ParseGTID(parts[0], parts[1]) }
go
func DecodeGTID(s string) (GTID, error) { if s == "" { return nil, nil } parts := strings.SplitN(s, "/", 2) if len(parts) != 2 { // There is no flavor. Try looking for a default parser. return ParseGTID("", s) } return ParseGTID(parts[0], parts[1]) }
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// DecodeGTID converts a string in the format returned by EncodeGTID back into // a GTID interface value with the correct underlying flavor.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/mysql/gtid.go#L93-L104
train
vitessio/vitess
go/mysql/gtid.go
MustDecodeGTID
func MustDecodeGTID(s string) GTID { gtid, err := DecodeGTID(s) if err != nil { panic(err) } return gtid }
go
func MustDecodeGTID(s string) GTID { gtid, err := DecodeGTID(s) if err != nil { panic(err) } return gtid }
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// MustDecodeGTID calls DecodeGTID and panics on error.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/mysql/gtid.go#L107-L113
train
vitessio/vitess
go/vt/binlog/binlogplayer/binlog_player.go
SetLastPosition
func (bps *Stats) SetLastPosition(pos mysql.Position) { bps.lastPositionMutex.Lock() defer bps.lastPositionMutex.Unlock() bps.lastPosition = pos }
go
func (bps *Stats) SetLastPosition(pos mysql.Position) { bps.lastPositionMutex.Lock() defer bps.lastPositionMutex.Unlock() bps.lastPosition = pos }
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// SetLastPosition sets the last replication position.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/binlog/binlogplayer/binlog_player.go#L85-L89
train
vitessio/vitess
go/vt/binlog/binlogplayer/binlog_player.go
LastPosition
func (bps *Stats) LastPosition() mysql.Position { bps.lastPositionMutex.Lock() defer bps.lastPositionMutex.Unlock() return bps.lastPosition }
go
func (bps *Stats) LastPosition() mysql.Position { bps.lastPositionMutex.Lock() defer bps.lastPositionMutex.Unlock() return bps.lastPosition }
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// LastPosition gets the last replication position.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/binlog/binlogplayer/binlog_player.go#L92-L96
train
vitessio/vitess
go/vt/binlog/binlogplayer/binlog_player.go
MessageHistory
func (bps *Stats) MessageHistory() []string { strs := make([]string, 0, 3) for _, h := range bps.History.Records() { h1, _ := h.(*StatsHistoryRecord) if h1 != nil { strs = append(strs, h1.Message) } } return strs }
go
func (bps *Stats) MessageHistory() []string { strs := make([]string, 0, 3) for _, h := range bps.History.Records() { h1, _ := h.(*StatsHistoryRecord) if h1 != nil { strs = append(strs, h1.Message) } } return strs }
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// MessageHistory gets all the messages, we store 3 at a time
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/binlog/binlogplayer/binlog_player.go#L99-L108
train
vitessio/vitess
go/vt/binlog/binlogplayer/binlog_player.go
NewStats
func NewStats() *Stats { bps := &Stats{} bps.Timings = stats.NewTimings("", "", "") bps.Rates = stats.NewRates("", bps.Timings, 15, 60e9) bps.History = history.New(3) bps.SecondsBehindMaster.Set(math.MaxInt64) return bps }
go
func NewStats() *Stats { bps := &Stats{} bps.Timings = stats.NewTimings("", "", "") bps.Rates = stats.NewRates("", bps.Timings, 15, 60e9) bps.History = history.New(3) bps.SecondsBehindMaster.Set(math.MaxInt64) return bps }
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// NewStats creates a new Stats structure.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/binlog/binlogplayer/binlog_player.go#L111-L118
train
vitessio/vitess
go/vt/binlog/binlogplayer/binlog_player.go
ApplyBinlogEvents
func (blp *BinlogPlayer) ApplyBinlogEvents(ctx context.Context) error { if err := SetVReplicationState(blp.dbClient, blp.uid, BlpRunning, ""); err != nil { log.Errorf("Error writing Running state: %v", err) } if err := blp.applyEvents(ctx); err != nil { msg := err.Error() blp.blplStats.History.Add(&StatsHistoryRecord{ Time: time.Now(), Message: msg, }) if err := SetVReplicationState(blp.dbClient, blp.uid, BlpError, msg); err != nil { log.Errorf("Error writing stop state: %v", err) } return err } return nil }
go
func (blp *BinlogPlayer) ApplyBinlogEvents(ctx context.Context) error { if err := SetVReplicationState(blp.dbClient, blp.uid, BlpRunning, ""); err != nil { log.Errorf("Error writing Running state: %v", err) } if err := blp.applyEvents(ctx); err != nil { msg := err.Error() blp.blplStats.History.Add(&StatsHistoryRecord{ Time: time.Now(), Message: msg, }) if err := SetVReplicationState(blp.dbClient, blp.uid, BlpError, msg); err != nil { log.Errorf("Error writing stop state: %v", err) } return err } return nil }
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// ApplyBinlogEvents makes an RPC request to BinlogServer // and processes the events. It returns nil if the provided context // was canceled, or if we reached the stopping point. // If an error is encountered, it updates the vreplication state to "Error". // If a stop position was specifed, and reached, the state is updated to "Stopped".
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/binlog/binlogplayer/binlog_player.go#L178-L195
train
vitessio/vitess
go/vt/binlog/binlogplayer/binlog_player.go
SetVReplicationState
func SetVReplicationState(dbClient DBClient, uid uint32, state, message string) error { query := fmt.Sprintf("update _vt.vreplication set state='%v', message=%v where id=%v", state, encodeString(message), uid) if _, err := dbClient.ExecuteFetch(query, 1); err != nil { return fmt.Errorf("could not set state: %v: %v", query, err) } return nil }
go
func SetVReplicationState(dbClient DBClient, uid uint32, state, message string) error { query := fmt.Sprintf("update _vt.vreplication set state='%v', message=%v where id=%v", state, encodeString(message), uid) if _, err := dbClient.ExecuteFetch(query, 1); err != nil { return fmt.Errorf("could not set state: %v: %v", query, err) } return nil }
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// SetVReplicationState updates the state in the _vt.vreplication table.
[ "SetVReplicationState", "updates", "the", "state", "in", "the", "_vt", ".", "vreplication", "table", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/binlog/binlogplayer/binlog_player.go#L510-L516
train
vitessio/vitess
go/vt/binlog/binlogplayer/binlog_player.go
ReadVRSettings
func ReadVRSettings(dbClient DBClient, uid uint32) (VRSettings, error) { query := fmt.Sprintf("select pos, stop_pos, max_tps, max_replication_lag, state from _vt.vreplication where id=%v", uid) qr, err := dbClient.ExecuteFetch(query, 1) if err != nil { return VRSettings{}, fmt.Errorf("error %v in selecting vreplication settings %v", err, query) } if len(qr.Rows) != 1 { return VRSettings{}, fmt.Errorf("checkpoint information not available in db for %v", uid) } vrRow := qr.Rows[0] maxTPS, err := sqltypes.ToInt64(vrRow[2]) if err != nil { return VRSettings{}, fmt.Errorf("failed to parse max_tps column: %v", err) } maxReplicationLag, err := sqltypes.ToInt64(vrRow[3]) if err != nil { return VRSettings{}, fmt.Errorf("failed to parse max_replication_lag column: %v", err) } startPos, err := mysql.DecodePosition(vrRow[0].ToString()) if err != nil { return VRSettings{}, fmt.Errorf("failed to parse pos column: %v", err) } stopPos, err := mysql.DecodePosition(vrRow[1].ToString()) if err != nil { return VRSettings{}, fmt.Errorf("failed to parse stop_pos column: %v", err) } return VRSettings{ StartPos: startPos, StopPos: stopPos, MaxTPS: maxTPS, MaxReplicationLag: maxReplicationLag, State: vrRow[4].ToString(), }, nil }
go
func ReadVRSettings(dbClient DBClient, uid uint32) (VRSettings, error) { query := fmt.Sprintf("select pos, stop_pos, max_tps, max_replication_lag, state from _vt.vreplication where id=%v", uid) qr, err := dbClient.ExecuteFetch(query, 1) if err != nil { return VRSettings{}, fmt.Errorf("error %v in selecting vreplication settings %v", err, query) } if len(qr.Rows) != 1 { return VRSettings{}, fmt.Errorf("checkpoint information not available in db for %v", uid) } vrRow := qr.Rows[0] maxTPS, err := sqltypes.ToInt64(vrRow[2]) if err != nil { return VRSettings{}, fmt.Errorf("failed to parse max_tps column: %v", err) } maxReplicationLag, err := sqltypes.ToInt64(vrRow[3]) if err != nil { return VRSettings{}, fmt.Errorf("failed to parse max_replication_lag column: %v", err) } startPos, err := mysql.DecodePosition(vrRow[0].ToString()) if err != nil { return VRSettings{}, fmt.Errorf("failed to parse pos column: %v", err) } stopPos, err := mysql.DecodePosition(vrRow[1].ToString()) if err != nil { return VRSettings{}, fmt.Errorf("failed to parse stop_pos column: %v", err) } return VRSettings{ StartPos: startPos, StopPos: stopPos, MaxTPS: maxTPS, MaxReplicationLag: maxReplicationLag, State: vrRow[4].ToString(), }, nil }
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// ReadVRSettings retrieves the throttler settings for // vreplication from the checkpoint table.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/binlog/binlogplayer/binlog_player.go#L529-L565
train
vitessio/vitess
go/vt/binlog/binlogplayer/binlog_player.go
CreateVReplication
func CreateVReplication(workflow string, source *binlogdatapb.BinlogSource, position string, maxTPS, maxReplicationLag, timeUpdated int64, dbName string) string { return fmt.Sprintf("insert into _vt.vreplication "+ "(workflow, source, pos, max_tps, max_replication_lag, time_updated, transaction_timestamp, state, db_name) "+ "values (%v, %v, %v, %v, %v, %v, 0, '%v', %v)", encodeString(workflow), encodeString(source.String()), encodeString(position), maxTPS, maxReplicationLag, timeUpdated, BlpRunning, encodeString(dbName)) }
go
func CreateVReplication(workflow string, source *binlogdatapb.BinlogSource, position string, maxTPS, maxReplicationLag, timeUpdated int64, dbName string) string { return fmt.Sprintf("insert into _vt.vreplication "+ "(workflow, source, pos, max_tps, max_replication_lag, time_updated, transaction_timestamp, state, db_name) "+ "values (%v, %v, %v, %v, %v, %v, 0, '%v', %v)", encodeString(workflow), encodeString(source.String()), encodeString(position), maxTPS, maxReplicationLag, timeUpdated, BlpRunning, encodeString(dbName)) }
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// CreateVReplication returns a statement to populate the first value into // the _vt.vreplication table.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/binlog/binlogplayer/binlog_player.go#L569-L574
train
vitessio/vitess
go/vt/binlog/binlogplayer/binlog_player.go
CreateVReplicationState
func CreateVReplicationState(workflow string, source *binlogdatapb.BinlogSource, position, state string, dbName string) string { return fmt.Sprintf("insert into _vt.vreplication "+ "(workflow, source, pos, max_tps, max_replication_lag, time_updated, transaction_timestamp, state, db_name) "+ "values (%v, %v, %v, %v, %v, %v, 0, '%v', %v)", encodeString(workflow), encodeString(source.String()), encodeString(position), throttler.MaxRateModuleDisabled, throttler.ReplicationLagModuleDisabled, time.Now().Unix(), state, encodeString(dbName)) }
go
func CreateVReplicationState(workflow string, source *binlogdatapb.BinlogSource, position, state string, dbName string) string { return fmt.Sprintf("insert into _vt.vreplication "+ "(workflow, source, pos, max_tps, max_replication_lag, time_updated, transaction_timestamp, state, db_name) "+ "values (%v, %v, %v, %v, %v, %v, 0, '%v', %v)", encodeString(workflow), encodeString(source.String()), encodeString(position), throttler.MaxRateModuleDisabled, throttler.ReplicationLagModuleDisabled, time.Now().Unix(), state, encodeString(dbName)) }
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// CreateVReplicationState returns a statement to create a stopped vreplication.
[ "CreateVReplicationState", "returns", "a", "statement", "to", "create", "a", "stopped", "vreplication", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/binlog/binlogplayer/binlog_player.go#L577-L582
train
vitessio/vitess
go/vt/binlog/binlogplayer/binlog_player.go
GenerateUpdatePos
func GenerateUpdatePos(uid uint32, pos mysql.Position, timeUpdated int64, txTimestamp int64) string { if txTimestamp != 0 { return fmt.Sprintf( "update _vt.vreplication set pos=%v, time_updated=%v, transaction_timestamp=%v, message='' where id=%v", encodeString(mysql.EncodePosition(pos)), timeUpdated, txTimestamp, uid) } return fmt.Sprintf( "update _vt.vreplication set pos=%v, time_updated=%v, message='' where id=%v", encodeString(mysql.EncodePosition(pos)), timeUpdated, uid) }
go
func GenerateUpdatePos(uid uint32, pos mysql.Position, timeUpdated int64, txTimestamp int64) string { if txTimestamp != 0 { return fmt.Sprintf( "update _vt.vreplication set pos=%v, time_updated=%v, transaction_timestamp=%v, message='' where id=%v", encodeString(mysql.EncodePosition(pos)), timeUpdated, txTimestamp, uid) } return fmt.Sprintf( "update _vt.vreplication set pos=%v, time_updated=%v, message='' where id=%v", encodeString(mysql.EncodePosition(pos)), timeUpdated, uid) }
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// GenerateUpdatePos returns a statement to update a value in the // _vt.vreplication table.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/binlog/binlogplayer/binlog_player.go#L586-L596
train
vitessio/vitess
go/vt/binlog/binlogplayer/binlog_player.go
StartVReplicationUntil
func StartVReplicationUntil(uid uint32, pos string) string { return fmt.Sprintf( "update _vt.vreplication set state='%v', stop_pos=%v where id=%v", BlpRunning, encodeString(pos), uid) }
go
func StartVReplicationUntil(uid uint32, pos string) string { return fmt.Sprintf( "update _vt.vreplication set state='%v', stop_pos=%v where id=%v", BlpRunning, encodeString(pos), uid) }
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// StartVReplicationUntil returns a statement to start the replication with a stop position.
[ "StartVReplicationUntil", "returns", "a", "statement", "to", "start", "the", "replication", "with", "a", "stop", "position", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/binlog/binlogplayer/binlog_player.go#L606-L610
train
vitessio/vitess
go/vt/binlog/binlogplayer/binlog_player.go
StopVReplication
func StopVReplication(uid uint32, message string) string { return fmt.Sprintf( "update _vt.vreplication set state='%v', message=%v where id=%v", BlpStopped, encodeString(message), uid) }
go
func StopVReplication(uid uint32, message string) string { return fmt.Sprintf( "update _vt.vreplication set state='%v', message=%v where id=%v", BlpStopped, encodeString(message), uid) }
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// StopVReplication returns a statement to stop the replication.
[ "StopVReplication", "returns", "a", "statement", "to", "stop", "the", "replication", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/binlog/binlogplayer/binlog_player.go#L613-L617
train
vitessio/vitess
go/vt/vtctld/action_repository.go
NewActionRepository
func NewActionRepository(ts *topo.Server) *ActionRepository { return &ActionRepository{ keyspaceActions: make(map[string]actionKeyspaceMethod), shardActions: make(map[string]actionShardMethod), tabletActions: make(map[string]actionTabletRecord), ts: ts, } }
go
func NewActionRepository(ts *topo.Server) *ActionRepository { return &ActionRepository{ keyspaceActions: make(map[string]actionKeyspaceMethod), shardActions: make(map[string]actionShardMethod), tabletActions: make(map[string]actionTabletRecord), ts: ts, } }
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// NewActionRepository creates and returns a new ActionRepository, // with no actions.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vtctld/action_repository.go#L81-L88
train
vitessio/vitess
go/vt/vtctld/action_repository.go
RegisterKeyspaceAction
func (ar *ActionRepository) RegisterKeyspaceAction(name string, method actionKeyspaceMethod) { ar.keyspaceActions[name] = method }
go
func (ar *ActionRepository) RegisterKeyspaceAction(name string, method actionKeyspaceMethod) { ar.keyspaceActions[name] = method }
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// RegisterKeyspaceAction registers a new action on a keyspace.
[ "RegisterKeyspaceAction", "registers", "a", "new", "action", "on", "a", "keyspace", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vtctld/action_repository.go#L91-L93
train
vitessio/vitess
go/vt/vtctld/action_repository.go
RegisterShardAction
func (ar *ActionRepository) RegisterShardAction(name string, method actionShardMethod) { ar.shardActions[name] = method }
go
func (ar *ActionRepository) RegisterShardAction(name string, method actionShardMethod) { ar.shardActions[name] = method }
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// RegisterShardAction registers a new action on a shard.
[ "RegisterShardAction", "registers", "a", "new", "action", "on", "a", "shard", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vtctld/action_repository.go#L96-L98
train
vitessio/vitess
go/vt/vtctld/action_repository.go
RegisterTabletAction
func (ar *ActionRepository) RegisterTabletAction(name, role string, method actionTabletMethod) { ar.tabletActions[name] = actionTabletRecord{ role: role, method: method, } }
go
func (ar *ActionRepository) RegisterTabletAction(name, role string, method actionTabletMethod) { ar.tabletActions[name] = actionTabletRecord{ role: role, method: method, } }
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// RegisterTabletAction registers a new action on a tablet.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vtctld/action_repository.go#L101-L106
train
vitessio/vitess
go/vt/vtctld/action_repository.go
ApplyKeyspaceAction
func (ar *ActionRepository) ApplyKeyspaceAction(ctx context.Context, actionName, keyspace string, r *http.Request) *ActionResult { result := &ActionResult{Name: actionName, Parameters: keyspace} action, ok := ar.keyspaceActions[actionName] if !ok { result.error("Unknown keyspace action") return result } ctx, cancel := context.WithTimeout(ctx, *actionTimeout) wr := wrangler.New(logutil.NewConsoleLogger(), ar.ts, tmclient.NewTabletManagerClient()) output, err := action(ctx, wr, keyspace, r) cancel() if err != nil { result.error(err.Error()) return result } result.Output = output return result }
go
func (ar *ActionRepository) ApplyKeyspaceAction(ctx context.Context, actionName, keyspace string, r *http.Request) *ActionResult { result := &ActionResult{Name: actionName, Parameters: keyspace} action, ok := ar.keyspaceActions[actionName] if !ok { result.error("Unknown keyspace action") return result } ctx, cancel := context.WithTimeout(ctx, *actionTimeout) wr := wrangler.New(logutil.NewConsoleLogger(), ar.ts, tmclient.NewTabletManagerClient()) output, err := action(ctx, wr, keyspace, r) cancel() if err != nil { result.error(err.Error()) return result } result.Output = output return result }
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// ApplyKeyspaceAction applies the provided action to the keyspace.
[ "ApplyKeyspaceAction", "applies", "the", "provided", "action", "to", "the", "keyspace", "." ]
d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vtctld/action_repository.go#L109-L128
train
vitessio/vitess
go/vt/vtctld/action_repository.go
ApplyTabletAction
func (ar *ActionRepository) ApplyTabletAction(ctx context.Context, actionName string, tabletAlias *topodatapb.TabletAlias, r *http.Request) *ActionResult { result := &ActionResult{ Name: actionName, Parameters: topoproto.TabletAliasString(tabletAlias), } action, ok := ar.tabletActions[actionName] if !ok { result.error("Unknown tablet action") return result } // check the role if action.role != "" { if err := acl.CheckAccessHTTP(r, action.role); err != nil { result.error("Access denied") return result } } // run the action ctx, cancel := context.WithTimeout(ctx, *actionTimeout) wr := wrangler.New(logutil.NewConsoleLogger(), ar.ts, tmclient.NewTabletManagerClient()) output, err := action.method(ctx, wr, tabletAlias, r) cancel() if err != nil { result.error(err.Error()) return result } result.Output = output return result }
go
func (ar *ActionRepository) ApplyTabletAction(ctx context.Context, actionName string, tabletAlias *topodatapb.TabletAlias, r *http.Request) *ActionResult { result := &ActionResult{ Name: actionName, Parameters: topoproto.TabletAliasString(tabletAlias), } action, ok := ar.tabletActions[actionName] if !ok { result.error("Unknown tablet action") return result } // check the role if action.role != "" { if err := acl.CheckAccessHTTP(r, action.role); err != nil { result.error("Access denied") return result } } // run the action ctx, cancel := context.WithTimeout(ctx, *actionTimeout) wr := wrangler.New(logutil.NewConsoleLogger(), ar.ts, tmclient.NewTabletManagerClient()) output, err := action.method(ctx, wr, tabletAlias, r) cancel() if err != nil { result.error(err.Error()) return result } result.Output = output return result }
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// ApplyTabletAction applies the provided action to the tablet.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vtctld/action_repository.go#L158-L189
train
vitessio/vitess
go/vt/worker/worker.go
resetVars
func resetVars() { statsState.Set("") statsRetryCount.Reset() statsRetryCounters.ResetAll() statsOnlineInsertsCounters.ResetAll() statsOnlineUpdatesCounters.ResetAll() statsOnlineDeletesCounters.ResetAll() statsOnlineEqualRowsCounters.ResetAll() statsOfflineInsertsCounters.ResetAll() statsOfflineUpdatesCounters.ResetAll() statsOfflineDeletesCounters.ResetAll() statsOfflineEqualRowsCounters.ResetAll() statsStreamingQueryCounters.ResetAll() statsStreamingQueryErrorsCounters.ResetAll() }
go
func resetVars() { statsState.Set("") statsRetryCount.Reset() statsRetryCounters.ResetAll() statsOnlineInsertsCounters.ResetAll() statsOnlineUpdatesCounters.ResetAll() statsOnlineDeletesCounters.ResetAll() statsOnlineEqualRowsCounters.ResetAll() statsOfflineInsertsCounters.ResetAll() statsOfflineUpdatesCounters.ResetAll() statsOfflineDeletesCounters.ResetAll() statsOfflineEqualRowsCounters.ResetAll() statsStreamingQueryCounters.ResetAll() statsStreamingQueryErrorsCounters.ResetAll() }
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// resetVars resets the debug variables that are meant to provide information on a // per-run basis. This should be called at the beginning of each worker run.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/worker/worker.go#L132-L149
train
vitessio/vitess
go/vt/vtgate/engine/route.go
NewSimpleRoute
func NewSimpleRoute(opcode RouteOpcode, keyspace *vindexes.Keyspace) *Route { return &Route{ Opcode: opcode, Keyspace: keyspace, } }
go
func NewSimpleRoute(opcode RouteOpcode, keyspace *vindexes.Keyspace) *Route { return &Route{ Opcode: opcode, Keyspace: keyspace, } }
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// NewSimpleRoute creates a Route with the bare minimum of parameters.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vtgate/engine/route.go#L87-L92
train
vitessio/vitess
go/vt/vtgate/engine/route.go
NewRoute
func NewRoute(opcode RouteOpcode, keyspace *vindexes.Keyspace, query, fieldQuery string) *Route { return &Route{ Opcode: opcode, Keyspace: keyspace, Query: query, FieldQuery: fieldQuery, } }
go
func NewRoute(opcode RouteOpcode, keyspace *vindexes.Keyspace, query, fieldQuery string) *Route { return &Route{ Opcode: opcode, Keyspace: keyspace, Query: query, FieldQuery: fieldQuery, } }
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// NewRoute creates a Route.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vtgate/engine/route.go#L95-L102
train
vitessio/vitess
go/vt/vtgate/engine/route.go
MarshalJSON
func (route *Route) MarshalJSON() ([]byte, error) { var vindexName string if route.Vindex != nil { vindexName = route.Vindex.String() } marshalRoute := struct { Opcode RouteOpcode Keyspace *vindexes.Keyspace `json:",omitempty"` Query string `json:",omitempty"` FieldQuery string `json:",omitempty"` Vindex string `json:",omitempty"` Values []sqltypes.PlanValue `json:",omitempty"` OrderBy []OrderbyParams `json:",omitempty"` TruncateColumnCount int `json:",omitempty"` QueryTimeout int `json:",omitempty"` ScatterErrorsAsWarnings bool `json:",omitempty"` }{ Opcode: route.Opcode, Keyspace: route.Keyspace, Query: route.Query, FieldQuery: route.FieldQuery, Vindex: vindexName, Values: route.Values, OrderBy: route.OrderBy, TruncateColumnCount: route.TruncateColumnCount, QueryTimeout: route.QueryTimeout, ScatterErrorsAsWarnings: route.ScatterErrorsAsWarnings, } return jsonutil.MarshalNoEscape(marshalRoute) }
go
func (route *Route) MarshalJSON() ([]byte, error) { var vindexName string if route.Vindex != nil { vindexName = route.Vindex.String() } marshalRoute := struct { Opcode RouteOpcode Keyspace *vindexes.Keyspace `json:",omitempty"` Query string `json:",omitempty"` FieldQuery string `json:",omitempty"` Vindex string `json:",omitempty"` Values []sqltypes.PlanValue `json:",omitempty"` OrderBy []OrderbyParams `json:",omitempty"` TruncateColumnCount int `json:",omitempty"` QueryTimeout int `json:",omitempty"` ScatterErrorsAsWarnings bool `json:",omitempty"` }{ Opcode: route.Opcode, Keyspace: route.Keyspace, Query: route.Query, FieldQuery: route.FieldQuery, Vindex: vindexName, Values: route.Values, OrderBy: route.OrderBy, TruncateColumnCount: route.TruncateColumnCount, QueryTimeout: route.QueryTimeout, ScatterErrorsAsWarnings: route.ScatterErrorsAsWarnings, } return jsonutil.MarshalNoEscape(marshalRoute) }
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// MarshalJSON serializes the Route into a JSON representation. // It's used for testing and diagnostics.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vtgate/engine/route.go#L113-L142
train
vitessio/vitess
go/stats/duration.go
NewCounterDuration
func NewCounterDuration(name, help string) *CounterDuration { cd := &CounterDuration{ help: help, } publish(name, cd) return cd }
go
func NewCounterDuration(name, help string) *CounterDuration { cd := &CounterDuration{ help: help, } publish(name, cd) return cd }
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// NewCounterDuration returns a new CounterDuration.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/stats/duration.go#L33-L39
train
vitessio/vitess
go/stats/duration.go
String
func (cd CounterDuration) String() string { return strconv.FormatInt(int64(cd.i.Get()), 10) }
go
func (cd CounterDuration) String() string { return strconv.FormatInt(int64(cd.i.Get()), 10) }
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// String is the implementation of expvar.var.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/stats/duration.go#L47-L49
train
vitessio/vitess
go/stats/duration.go
Add
func (cd *CounterDuration) Add(delta time.Duration) { cd.i.Add(delta) }
go
func (cd *CounterDuration) Add(delta time.Duration) { cd.i.Add(delta) }
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// Add adds the provided value to the CounterDuration.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/stats/duration.go#L52-L54
train
vitessio/vitess
go/stats/duration.go
NewGaugeDuration
func NewGaugeDuration(name, help string) *GaugeDuration { gd := &GaugeDuration{ CounterDuration: CounterDuration{ help: help, }, } publish(name, gd) return gd }
go
func NewGaugeDuration(name, help string) *GaugeDuration { gd := &GaugeDuration{ CounterDuration: CounterDuration{ help: help, }, } publish(name, gd) return gd }
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// NewGaugeDuration returns a new GaugeDuration.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/stats/duration.go#L69-L77
train
vitessio/vitess
go/stats/duration.go
Set
func (gd *GaugeDuration) Set(value time.Duration) { gd.i.Set(value) }
go
func (gd *GaugeDuration) Set(value time.Duration) { gd.i.Set(value) }
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// Set sets the value.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/stats/duration.go#L80-L82
train
vitessio/vitess
go/stats/duration.go
NewCounterDurationFunc
func NewCounterDurationFunc(name string, help string, f func() time.Duration) *CounterDurationFunc { cf := &CounterDurationFunc{ F: f, help: help, } if name != "" { publish(name, cf) } return cf }
go
func NewCounterDurationFunc(name string, help string, f func() time.Duration) *CounterDurationFunc { cf := &CounterDurationFunc{ F: f, help: help, } if name != "" { publish(name, cf) } return cf }
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// NewCounterDurationFunc creates a new CounterDurationFunc instance and // publishes it if name is set.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/stats/duration.go#L92-L102
train
vitessio/vitess
go/stats/duration.go
NewGaugeDurationFunc
func NewGaugeDurationFunc(name string, help string, f func() time.Duration) *GaugeDurationFunc { gf := &GaugeDurationFunc{ CounterDurationFunc: CounterDurationFunc{ F: f, help: help, }, } if name != "" { publish(name, gf) } return gf }
go
func NewGaugeDurationFunc(name string, help string, f func() time.Duration) *GaugeDurationFunc { gf := &GaugeDurationFunc{ CounterDurationFunc: CounterDurationFunc{ F: f, help: help, }, } if name != "" { publish(name, gf) } return gf }
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// NewGaugeDurationFunc creates a new GaugeDurationFunc instance and // publishes it if name is set.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/stats/duration.go#L121-L133
train
vitessio/vitess
go/vt/vttablet/tabletserver/replication_watcher.go
NewReplicationWatcher
func NewReplicationWatcher(se *schema.Engine, config tabletenv.TabletConfig) *ReplicationWatcher { rpw := &ReplicationWatcher{ watchReplication: config.WatchReplication, se: se, } replOnce.Do(func() { stats.Publish("EventTokenPosition", stats.StringFunc(func() string { if e := rpw.EventToken(); e != nil { return e.Position } return "" })) stats.NewGaugeFunc( "EventTokenTimestamp", "Replication watcher event token timestamp", func() int64 { if e := rpw.EventToken(); e != nil { return e.Timestamp } return 0 }) }) return rpw }
go
func NewReplicationWatcher(se *schema.Engine, config tabletenv.TabletConfig) *ReplicationWatcher { rpw := &ReplicationWatcher{ watchReplication: config.WatchReplication, se: se, } replOnce.Do(func() { stats.Publish("EventTokenPosition", stats.StringFunc(func() string { if e := rpw.EventToken(); e != nil { return e.Position } return "" })) stats.NewGaugeFunc( "EventTokenTimestamp", "Replication watcher event token timestamp", func() int64 { if e := rpw.EventToken(); e != nil { return e.Timestamp } return 0 }) }) return rpw }
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// NewReplicationWatcher creates a new ReplicationWatcher.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vttablet/tabletserver/replication_watcher.go#L59-L82
train
vitessio/vitess
go/vt/vttablet/tabletserver/replication_watcher.go
Open
func (rpw *ReplicationWatcher) Open() { if rpw.isOpen || !rpw.watchReplication { return } ctx, cancel := context.WithCancel(tabletenv.LocalContext()) rpw.cancel = cancel rpw.wg.Add(1) go rpw.Process(ctx, rpw.dbconfigs) rpw.isOpen = true }
go
func (rpw *ReplicationWatcher) Open() { if rpw.isOpen || !rpw.watchReplication { return } ctx, cancel := context.WithCancel(tabletenv.LocalContext()) rpw.cancel = cancel rpw.wg.Add(1) go rpw.Process(ctx, rpw.dbconfigs) rpw.isOpen = true }
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// Open starts the ReplicationWatcher service.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vttablet/tabletserver/replication_watcher.go#L90-L99
train
vitessio/vitess
go/vt/vttablet/tabletserver/replication_watcher.go
Close
func (rpw *ReplicationWatcher) Close() { if !rpw.isOpen { return } rpw.cancel() rpw.wg.Wait() rpw.isOpen = false }
go
func (rpw *ReplicationWatcher) Close() { if !rpw.isOpen { return } rpw.cancel() rpw.wg.Wait() rpw.isOpen = false }
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// Close stops the ReplicationWatcher service.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vttablet/tabletserver/replication_watcher.go#L102-L109
train
vitessio/vitess
go/vt/vttablet/tabletserver/replication_watcher.go
Process
func (rpw *ReplicationWatcher) Process(ctx context.Context, dbconfigs *dbconfigs.DBConfigs) { defer func() { tabletenv.LogError() rpw.wg.Done() }() for { log.Infof("Starting a binlog Streamer from current replication position to monitor binlogs") streamer := binlog.NewStreamer(dbconfigs.DbaWithDB(), rpw.se, nil /*clientCharset*/, mysql.Position{}, 0 /*timestamp*/, func(eventToken *querypb.EventToken, statements []binlog.FullBinlogStatement) error { // Save the event token. rpw.mu.Lock() rpw.eventToken = eventToken rpw.mu.Unlock() // If it's a DDL, trigger a schema reload. for _, statement := range statements { if statement.Statement.Category != binlogdatapb.BinlogTransaction_Statement_BL_DDL { continue } err := rpw.se.Reload(ctx) log.Infof("Streamer triggered a schema reload, with result: %v", err) return nil } return nil }) if err := streamer.Stream(ctx); err != nil { log.Infof("Streamer stopped: %v", err) } select { case <-ctx.Done(): return case <-time.After(5 * time.Second): } } }
go
func (rpw *ReplicationWatcher) Process(ctx context.Context, dbconfigs *dbconfigs.DBConfigs) { defer func() { tabletenv.LogError() rpw.wg.Done() }() for { log.Infof("Starting a binlog Streamer from current replication position to monitor binlogs") streamer := binlog.NewStreamer(dbconfigs.DbaWithDB(), rpw.se, nil /*clientCharset*/, mysql.Position{}, 0 /*timestamp*/, func(eventToken *querypb.EventToken, statements []binlog.FullBinlogStatement) error { // Save the event token. rpw.mu.Lock() rpw.eventToken = eventToken rpw.mu.Unlock() // If it's a DDL, trigger a schema reload. for _, statement := range statements { if statement.Statement.Category != binlogdatapb.BinlogTransaction_Statement_BL_DDL { continue } err := rpw.se.Reload(ctx) log.Infof("Streamer triggered a schema reload, with result: %v", err) return nil } return nil }) if err := streamer.Stream(ctx); err != nil { log.Infof("Streamer stopped: %v", err) } select { case <-ctx.Done(): return case <-time.After(5 * time.Second): } } }
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// Process processes the replication stream.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vttablet/tabletserver/replication_watcher.go#L112-L148
train
vitessio/vitess
go/vt/vttablet/tabletserver/replication_watcher.go
ComputeExtras
func (rpw *ReplicationWatcher) ComputeExtras(options *querypb.ExecuteOptions) *querypb.ResultExtras { if options == nil { // No options passed in. return nil } if !options.IncludeEventToken && options.CompareEventToken == nil { // The flags that make extras exist are not there. return nil } et := rpw.EventToken() if et == nil { return nil } var extras *querypb.ResultExtras // See if we need to fill in EventToken. if options.IncludeEventToken { extras = &querypb.ResultExtras{ EventToken: et, } } // See if we need to compare. if options.CompareEventToken != nil { if eventtoken.Fresher(et, options.CompareEventToken) >= 0 { // For a query, we are fresher if greater or equal // to the provided compare_event_token. if extras == nil { extras = &querypb.ResultExtras{ Fresher: true, } } else { extras.Fresher = true } } } return extras }
go
func (rpw *ReplicationWatcher) ComputeExtras(options *querypb.ExecuteOptions) *querypb.ResultExtras { if options == nil { // No options passed in. return nil } if !options.IncludeEventToken && options.CompareEventToken == nil { // The flags that make extras exist are not there. return nil } et := rpw.EventToken() if et == nil { return nil } var extras *querypb.ResultExtras // See if we need to fill in EventToken. if options.IncludeEventToken { extras = &querypb.ResultExtras{ EventToken: et, } } // See if we need to compare. if options.CompareEventToken != nil { if eventtoken.Fresher(et, options.CompareEventToken) >= 0 { // For a query, we are fresher if greater or equal // to the provided compare_event_token. if extras == nil { extras = &querypb.ResultExtras{ Fresher: true, } } else { extras.Fresher = true } } } return extras }
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// ComputeExtras returns the requested ResultExtras based on the supplied options.
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d568817542a413611801aa17a1c213aa95592182
https://github.com/vitessio/vitess/blob/d568817542a413611801aa17a1c213aa95592182/go/vt/vttablet/tabletserver/replication_watcher.go#L151-L191
train