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"""
Thread-Safe Configuration Provider for Flare Platform
"""
import threading
import os
import json
import commentjson
from typing import Optional, Dict, Any, List
from datetime import datetime
from pathlib import Path
import tempfile
import shutil
from config_models import (
ServiceConfig, GlobalConfig, ProjectConfig, VersionConfig,
IntentConfig, APIConfig, ActivityLogEntry, ParameterConfig
)
from logger import log_info, log_error, log_warning, log_debug, LogTimer
from exceptions import (
RaceConditionError, ConfigurationError, ResourceNotFoundError,
DuplicateResourceError, ValidationError
)
from encryption_utils import encrypt, decrypt
class ConfigProvider:
"""Thread-safe singleton configuration provider"""
_instance: Optional[ServiceConfig] = None
_lock = threading.RLock() # Reentrant lock for nested calls
_file_lock = threading.Lock() # Separate lock for file operations
_CONFIG_PATH = Path(__file__).parent / "service_config.jsonc"
@classmethod
def get(cls) -> ServiceConfig:
"""Get cached configuration - thread-safe"""
if cls._instance is None:
with cls._lock:
# Double-checked locking pattern
if cls._instance is None:
with LogTimer("config_load"):
cls._instance = cls._load()
cls._instance.build_index()
log_info("Configuration loaded successfully")
return cls._instance
@classmethod
def reload(cls) -> ServiceConfig:
"""Force reload configuration from file"""
with cls._lock:
log_info("Reloading configuration...")
cls._instance = None
return cls.get()
@classmethod
def _load(cls) -> ServiceConfig:
"""Load configuration from file"""
try:
if not cls._CONFIG_PATH.exists():
raise ConfigurationError(
f"Config file not found: {cls._CONFIG_PATH}",
config_key="service_config.jsonc"
)
with open(cls._CONFIG_PATH, 'r', encoding='utf-8') as f:
config_data = commentjson.load(f)
# Ensure required fields
if 'config' not in config_data:
config_data['config'] = {}
# Parse API configs (handle JSON strings)
if 'apis' in config_data:
cls._parse_api_configs(config_data['apis'])
# Validate and create model
cfg = ServiceConfig.model_validate(config_data)
log_debug(
"Configuration loaded",
projects=len(cfg.projects),
apis=len(cfg.apis),
users=len(cfg.global_config.users)
)
return cfg
except Exception as e:
log_error(f"Error loading config", error=str(e), path=str(cls._CONFIG_PATH))
raise ConfigurationError(f"Failed to load configuration: {e}")
@classmethod
def _parse_api_configs(cls, apis: List[Dict[str, Any]]) -> None:
"""Parse JSON string fields in API configs"""
for api in apis:
# Parse headers
if 'headers' in api and isinstance(api['headers'], str):
try:
api['headers'] = json.loads(api['headers'])
except json.JSONDecodeError:
api['headers'] = {}
# Parse body_template
if 'body_template' in api and isinstance(api['body_template'], str):
try:
api['body_template'] = json.loads(api['body_template'])
except json.JSONDecodeError:
api['body_template'] = {}
# Parse auth configs
if 'auth' in api and api['auth']:
cls._parse_auth_config(api['auth'])
@classmethod
def _parse_auth_config(cls, auth: Dict[str, Any]) -> None:
"""Parse auth configuration"""
# Parse token_request_body
if 'token_request_body' in auth and isinstance(auth['token_request_body'], str):
try:
auth['token_request_body'] = json.loads(auth['token_request_body'])
except json.JSONDecodeError:
auth['token_request_body'] = {}
# Parse token_refresh_body
if 'token_refresh_body' in auth and isinstance(auth['token_refresh_body'], str):
try:
auth['token_refresh_body'] = json.loads(auth['token_refresh_body'])
except json.JSONDecodeError:
auth['token_refresh_body'] = {}
@classmethod
def save(cls, config: ServiceConfig, username: str) -> None:
"""Thread-safe configuration save with optimistic locking"""
with cls._file_lock:
try:
# Load current config for race condition check
current_config = cls._load()
# Check for race condition
if config.last_update_date and current_config.last_update_date:
if config.last_update_date != current_config.last_update_date:
raise RaceConditionError(
"Configuration was modified by another user",
current_user=username,
last_update_user=current_config.last_update_user,
last_update_date=current_config.last_update_date,
entity_type="configuration"
)
# Update metadata
config.last_update_date = datetime.utcnow().isoformat()
config.last_update_user = username
# Convert to JSON
data = config.to_jsonc_dict()
json_str = json.dumps(data, ensure_ascii=False, indent=2)
# Atomic write using temp file
with tempfile.NamedTemporaryFile(
mode='w',
encoding='utf-8',
dir=cls._CONFIG_PATH.parent,
delete=False
) as tmp_file:
tmp_file.write(json_str)
temp_path = Path(tmp_file.name)
# Atomic rename
temp_path.replace(cls._CONFIG_PATH)
# Update cache
with cls._lock:
cls._instance = config
cls._instance.build_index()
log_info(
"Configuration saved",
user=username,
size=len(json_str)
)
except Exception as e:
log_error("Failed to save configuration", error=str(e), user=username)
raise
# ===================== Environment Methods =====================
@classmethod
def update_environment(cls, update_data: dict, username: str) -> None:
"""Update environment configuration"""
with cls._lock:
config = cls.get()
# Update providers
if 'llm_provider' in update_data:
config.global_config.llm_provider = update_data['llm_provider']
if 'tts_provider' in update_data:
config.global_config.tts_provider = update_data['tts_provider']
if 'stt_provider' in update_data:
config.global_config.stt_provider = update_data['stt_provider']
# Log activity
cls._add_activity(
config, username, "UPDATE_ENVIRONMENT",
"environment", None, None,
f"Updated providers"
)
# Save
cls.save(config, username)
# ===================== Project Methods =====================
@classmethod
def get_project(cls, project_id: int) -> Optional[ProjectConfig]:
"""Get project by ID"""
config = cls.get()
return next((p for p in config.projects if p.id == project_id), None)
@classmethod
def create_project(cls, project_data: dict, username: str) -> ProjectConfig:
"""Create new project with thread safety"""
with cls._lock:
config = cls.get()
# Check for duplicate name
if any(p.name == project_data['name'] for p in config.projects):
raise DuplicateResourceError("project", project_data['name'])
# Create project
project = ProjectConfig(
id=config.project_id_counter,
created_date=datetime.utcnow().isoformat(),
created_by=username,
**project_data
)
# Update config
config.projects.append(project)
config.project_id_counter += 1
# Log activity
cls._add_activity(
config, username, "CREATE_PROJECT",
"project", project.id, project.name
)
# Save
cls.save(config, username)
log_info(
"Project created",
project_id=project.id,
name=project.name,
user=username
)
return project
@classmethod
def update_project(cls, project_id: int, update_data: dict, username: str) -> ProjectConfig:
"""Update project with optimistic locking"""
with cls._lock:
config = cls.get()
project = cls.get_project(project_id)
if not project:
raise ResourceNotFoundError("project", project_id)
# Check race condition
if 'last_update_date' in update_data:
if project.last_update_date != update_data['last_update_date']:
raise RaceConditionError(
f"Project '{project.name}' was modified by another user",
current_user=username,
last_update_user=project.last_update_user,
last_update_date=project.last_update_date,
entity_type="project",
entity_id=project_id
)
# Update fields
for key, value in update_data.items():
if hasattr(project, key) and key not in ['id', 'created_date', 'created_by']:
setattr(project, key, value)
project.last_update_date = datetime.utcnow().isoformat()
project.last_update_user = username
# Log activity
cls._add_activity(
config, username, "UPDATE_PROJECT",
"project", project.id, project.name
)
# Save
cls.save(config, username)
log_info(
"Project updated",
project_id=project.id,
user=username
)
return project
@classmethod
def delete_project(cls, project_id: int, username: str) -> None:
"""Soft delete project"""
with cls._lock:
config = cls.get()
project = cls.get_project(project_id)
if not project:
raise ResourceNotFoundError("project", project_id)
project.deleted = True
project.last_update_date = datetime.utcnow().isoformat()
project.last_update_user = username
# Log activity
cls._add_activity(
config, username, "DELETE_PROJECT",
"project", project.id, project.name
)
# Save
cls.save(config, username)
log_info(
"Project deleted",
project_id=project.id,
user=username
)
# ===================== Version Methods =====================
@classmethod
def create_version(cls, project_id: int, version_data: dict, username: str) -> VersionConfig:
"""Create new version"""
with cls._lock:
config = cls.get()
project = cls.get_project(project_id)
if not project:
raise ResourceNotFoundError("project", project_id)
# Create version
version = VersionConfig(
no=project.version_id_counter,
created_date=datetime.utcnow().isoformat(),
created_by=username,
**version_data
)
# Update project
project.versions.append(version)
project.version_id_counter += 1
project.last_update_date = datetime.utcnow().isoformat()
project.last_update_user = username
# Log activity
cls._add_activity(
config, username, "CREATE_VERSION",
"version", version.no, f"{project.name} v{version.no}",
f"Project: {project.name}"
)
# Save
cls.save(config, username)
log_info(
"Version created",
project_id=project.id,
version_no=version.no,
user=username
)
return version
@classmethod
def publish_version(cls, project_id: int, version_no: int, username: str) -> VersionConfig:
"""Publish a version"""
with cls._lock:
config = cls.get()
project = cls.get_project(project_id)
if not project:
raise ResourceNotFoundError("project", project_id)
version = next((v for v in project.versions if v.no == version_no), None)
if not version:
raise ResourceNotFoundError("version", version_no)
# Unpublish other versions
for v in project.versions:
if v.published and v.no != version_no:
v.published = False
# Publish this version
version.published = True
version.publish_date = datetime.utcnow().isoformat()
version.published_by = username
# Update project
project.last_update_date = datetime.utcnow().isoformat()
project.last_update_user = username
# Log activity
cls._add_activity(
config, username, "PUBLISH_VERSION",
"version", version.no, f"{project.name} v{version.no}",
f"Published version {version.no}"
)
# Save
cls.save(config, username)
log_info(
"Version published",
project_id=project.id,
version_no=version.no,
user=username
)
return version
# ===================== API Methods =====================
@classmethod
def create_api(cls, api_data: dict, username: str) -> APIConfig:
"""Create new API"""
with cls._lock:
config = cls.get()
# Check for duplicate name
if any(a.name == api_data['name'] for a in config.apis):
raise DuplicateResourceError("api", api_data['name'])
# Create API
api = APIConfig(
created_date=datetime.utcnow().isoformat(),
created_by=username,
**api_data
)
# Add to config
config.apis.append(api)
# Rebuild index
config.build_index()
# Log activity
cls._add_activity(
config, username, "CREATE_API",
"api", api.name, api.name
)
# Save
cls.save(config, username)
log_info(
"API created",
api_name=api.name,
user=username
)
return api
@classmethod
def update_api(cls, api_name: str, update_data: dict, username: str) -> APIConfig:
"""Update API configuration"""
with cls._lock:
config = cls.get()
api = config.get_api(api_name)
if not api:
raise ResourceNotFoundError("api", api_name)
# Check race condition
if 'last_update_date' in update_data:
if api.last_update_date != update_data['last_update_date']:
raise RaceConditionError(
f"API '{api_name}' was modified by another user",
current_user=username,
last_update_user=api.last_update_user,
last_update_date=api.last_update_date,
entity_type="api",
entity_id=api_name
)
# Update fields
for key, value in update_data.items():
if hasattr(api, key) and key not in ['name', 'created_date', 'created_by']:
setattr(api, key, value)
api.last_update_date = datetime.utcnow().isoformat()
api.last_update_user = username
# Rebuild index
config.build_index()
# Log activity
cls._add_activity(
config, username, "UPDATE_API",
"api", api.name, api.name
)
# Save
cls.save(config, username)
log_info(
"API updated",
api_name=api.name,
user=username
)
return api
@classmethod
def delete_api(cls, api_name: str, username: str) -> None:
"""Soft delete API"""
with cls._lock:
config = cls.get()
api = config.get_api(api_name)
if not api:
raise ResourceNotFoundError("api", api_name)
api.deleted = True
api.last_update_date = datetime.utcnow().isoformat()
api.last_update_user = username
# Rebuild index
config.build_index()
# Log activity
cls._add_activity(
config, username, "DELETE_API",
"api", api.name, api.name
)
# Save
cls.save(config, username)
log_info(
"API deleted",
api_name=api.name,
user=username
)
# ===================== Helper Methods =====================
@classmethod
def _add_activity(
cls,
config: ServiceConfig,
username: str,
action: str,
entity_type: str,
entity_id: Any,
entity_name: Optional[str] = None,
details: Optional[str] = None
) -> None:
"""Add activity log entry"""
activity = ActivityLogEntry(
timestamp=datetime.utcnow().isoformat(),
username=username,
action=action,
entity_type=entity_type,
entity_id=str(entity_id) if entity_id else None,
entity_name=entity_name,
details=details
)
config.activity_log.append(activity)
# Keep only last 1000 entries
if len(config.activity_log) > 1000:
config.activity_log = config.activity_log[-1000:]
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