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Merge pull request 'refactor: remove all postgresql related' (#30) from dev into main
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Browse source 
Reviewed-on: #30
This commit is contained in:
Chawanwit Pornnatwuttigul 2025-11-03 10:21:46 +00:00
commit e60826fce5
6 changed files with 545 additions and 497 deletions
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41
core/detection/branches.py
View file

@ -43,7 +43,7 @@ class BranchProcessor:
# Storage managers (set during initialization) # Storage managers (set during initialization)
self.redis_manager = None self.redis_manager = None
self.db_manager = None # self.db_manager = None # Disabled - PostgreSQL operations moved to microservices
# Branch execution timeout (seconds) # Branch execution timeout (seconds)
self.branch_timeout = 30.0 self.branch_timeout = 30.0
@ -60,21 +60,21 @@ class BranchProcessor:
logger.info("BranchProcessor initialized") logger.info("BranchProcessor initialized")
async def initialize(self, pipeline_config: Any, redis_manager: Any, db_manager: Any) -> bool: async def initialize(self, pipeline_config: Any, redis_manager: Any, db_manager: Any = None) -> bool:
""" """
Initialize branch processor with pipeline configuration. Initialize branch processor with pipeline configuration.
Args: Args:
pipeline_config: Pipeline configuration object pipeline_config: Pipeline configuration object
redis_manager: Redis manager instance redis_manager: Redis manager instance
db_manager: Database manager instance db_manager: Database manager instance (deprecated, not used)
Returns: Returns:
True if successful, False otherwise True if successful, False otherwise
""" """
try: try:
self.redis_manager = redis_manager self.redis_manager = redis_manager
self.db_manager = db_manager # self.db_manager = db_manager # Disabled - PostgreSQL operations moved to microservices
# Parse field mappings from parallelActions to enable dynamic field extraction # Parse field mappings from parallelActions to enable dynamic field extraction
self._parse_branch_output_fields(pipeline_config) self._parse_branch_output_fields(pipeline_config)
@ -170,22 +170,25 @@ class BranchProcessor:
return return
for action in pipeline_config.parallel_actions: for action in pipeline_config.parallel_actions:
# Skip PostgreSQL actions - they are disabled
if action.type.value == 'postgresql_update_combined': if action.type.value == 'postgresql_update_combined':
fields = action.params.get('fields', {}) logger.debug(f"[FIELD MAPPING] Skipping PostgreSQL action (disabled)")
continue # Skip field parsing for disabled PostgreSQL operations
# Parse each field template to extract branch_id and field_name # fields = action.params.get('fields', {})
for db_field_name, template in fields.items(): #
# Template format: "{branch_id.field_name}" # # Parse each field template to extract branch_id and field_name
if template.startswith('{') and template.endswith('}'): # for db_field_name, template in fields.items():
var_name = template[1:-1] # Remove { } # # Template format: "{branch_id.field_name}"
# if template.startswith('{') and template.endswith('}'):
if '.' in var_name: # var_name = template[1:-1] # Remove { }
branch_id, field_name = var_name.split('.', 1) #
# if '.' in var_name:
# Store the mapping # branch_id, field_name = var_name.split('.', 1)
self.branch_output_fields[branch_id] = field_name #
# # Store the mapping
logger.info(f"[FIELD MAPPING] Branch '{branch_id}' → outputs field '{field_name}'") # self.branch_output_fields[branch_id] = field_name
#
# logger.info(f"[FIELD MAPPING] Branch '{branch_id}' → outputs field '{field_name}'")
logger.info(f"[FIELD MAPPING] Parsed {len(self.branch_output_fields)} branch output field mappings") logger.info(f"[FIELD MAPPING] Parsed {len(self.branch_output_fields)} branch output field mappings")

232
core/detection/pipeline.py
View file

@ -15,7 +15,7 @@ from ..models.inference import YOLOWrapper
from ..models.pipeline import PipelineParser from ..models.pipeline import PipelineParser
from .branches import BranchProcessor from .branches import BranchProcessor
from ..storage.redis import RedisManager from ..storage.redis import RedisManager
from ..storage.database import DatabaseManager # from ..storage.database import DatabaseManager # Disabled - PostgreSQL moved to microservices
from ..storage.license_plate import LicensePlateManager from ..storage.license_plate import LicensePlateManager
logger = logging.getLogger(__name__) logger = logging.getLogger(__name__)
@ -45,7 +45,7 @@ class DetectionPipeline:
# Initialize components # Initialize components
self.branch_processor = BranchProcessor(model_manager, model_id) self.branch_processor = BranchProcessor(model_manager, model_id)
self.redis_manager = None self.redis_manager = None
self.db_manager = None # self.db_manager = None # Disabled - PostgreSQL operations moved to microservices
self.license_plate_manager = None self.license_plate_manager = None
# Main detection model # Main detection model
@ -113,16 +113,18 @@ class DetectionPipeline:
return False return False
logger.info("Redis connection initialized") logger.info("Redis connection initialized")
# Initialize database connection # PostgreSQL database connection DISABLED - operations moved to microservices
if self.pipeline_parser.postgresql_config: # Database operations are now handled by backend services via WebSocket
self.db_manager = DatabaseManager(self.pipeline_parser.postgresql_config.__dict__) # if self.pipeline_parser.postgresql_config:
if not self.db_manager.connect(): # self.db_manager = DatabaseManager(self.pipeline_parser.postgresql_config.__dict__)
logger.error("Failed to initialize database connection") # if not self.db_manager.connect():
return False # logger.error("Failed to initialize database connection")
# Create required tables # return False
if not self.db_manager.create_car_frontal_info_table(): # # Create required tables
logger.warning("Failed to create car_frontal_info table") # if not self.db_manager.create_car_frontal_info_table():
logger.info("Database connection initialized") # logger.warning("Failed to create car_frontal_info table")
# logger.info("Database connection initialized")
logger.info("PostgreSQL operations disabled - using WebSocket for data communication")
# Initialize license plate manager (using same Redis config as main Redis manager) # Initialize license plate manager (using same Redis config as main Redis manager)
if self.pipeline_parser.redis_config: if self.pipeline_parser.redis_config:
@ -138,11 +140,11 @@ class DetectionPipeline:
logger.error("Failed to initialize detection model") logger.error("Failed to initialize detection model")
return False return False
# Initialize branch processor # Initialize branch processor (db_manager=None since PostgreSQL is disabled)
if not await self.branch_processor.initialize( if not await self.branch_processor.initialize(
self.pipeline_config, self.pipeline_config,
self.redis_manager, self.redis_manager,
self.db_manager db_manager=None # PostgreSQL disabled
): ):
logger.error("Failed to initialize branch processor") logger.error("Failed to initialize branch processor")
return False return False
@ -283,23 +285,25 @@ class DetectionPipeline:
return return
# Send imageDetection message with license plate data combined with processing results # Send imageDetection message with license plate data combined with processing results
# This is the PRIMARY data flow to backend - WebSocket is critical, keep this!
await self._send_license_plate_message(subscription_id, license_text, confidence, session_id) await self._send_license_plate_message(subscription_id, license_text, confidence, session_id)
# Update database with license plate information if database manager is available # PostgreSQL database update DISABLED - backend handles data via WebSocket messages
if self.db_manager and license_text: # if self.db_manager and license_text:
success = self.db_manager.execute_update( # success = self.db_manager.execute_update(
table='car_frontal_info', # table='car_frontal_info',
key_field='session_id', # key_field='session_id',
key_value=session_id, # key_value=session_id,
fields={ # fields={
'license_character': license_text, # 'license_character': license_text,
'license_type': 'LPR_detected' # Mark as detected by LPR service # 'license_type': 'LPR_detected' # Mark as detected by LPR service
} # }
) # )
if success: # if success:
logger.info(f"[LICENSE PLATE] Updated database for session {session_id}") # logger.info(f"[LICENSE PLATE] Updated database for session {session_id}")
else: # else:
logger.warning(f"[LICENSE PLATE] Failed to update database for session {session_id}") # logger.warning(f"[LICENSE PLATE] Failed to update database for session {session_id}")
logger.debug(f"[LICENSE PLATE] Data sent via WebSocket for session {session_id}")
except Exception as e: except Exception as e:
logger.error(f"Error in license plate result callback: {e}", exc_info=True) logger.error(f"Error in license plate result callback: {e}", exc_info=True)
@ -710,17 +714,18 @@ class DetectionPipeline:
self.session_to_subscription[session_id] = subscription_id self.session_to_subscription[session_id] = subscription_id
logger.info(f"[SESSION MAPPING] Stored mapping: sessionId '{session_id}' -> subscriptionIdentifier '{subscription_id}'") logger.info(f"[SESSION MAPPING] Stored mapping: sessionId '{session_id}' -> subscriptionIdentifier '{subscription_id}'")
# Initialize database record with session_id # PostgreSQL database insert DISABLED - backend handles data via WebSocket
if session_id and self.db_manager: # if session_id and self.db_manager:
success = self.db_manager.insert_initial_detection( # success = self.db_manager.insert_initial_detection(
display_id=display_id, # display_id=display_id,
captured_timestamp=detection_context['timestamp'], # captured_timestamp=detection_context['timestamp'],
session_id=session_id # session_id=session_id
) # )
if success: # if success:
logger.info(f"Created initial database record with session {session_id}") # logger.info(f"Created initial database record with session {session_id}")
else: # else:
logger.warning(f"Failed to create initial database record for session {session_id}") # logger.warning(f"Failed to create initial database record for session {session_id}")
logger.debug(f"Session {session_id} will be communicated via WebSocket")
# Execute branches in parallel # Execute branches in parallel
if hasattr(self.pipeline_config, 'branches') and self.pipeline_config.branches: if hasattr(self.pipeline_config, 'branches') and self.pipeline_config.branches:
@ -886,15 +891,16 @@ class DetectionPipeline:
if valid_detections: if valid_detections:
logger.info(f"Found {len(valid_detections)} valid detections for pipeline processing") logger.info(f"Found {len(valid_detections)} valid detections for pipeline processing")
# Initialize database record if session_id is provided # PostgreSQL database insert DISABLED - backend handles data via WebSocket
if session_id and self.db_manager: # if session_id and self.db_manager:
success = self.db_manager.insert_initial_detection( # success = self.db_manager.insert_initial_detection(
display_id=display_id, # display_id=display_id,
captured_timestamp=detection_context['timestamp'], # captured_timestamp=detection_context['timestamp'],
session_id=session_id # session_id=session_id
) # )
if not success: # if not success:
logger.warning(f"Failed to create initial database record for session {session_id}") # logger.warning(f"Failed to create initial database record for session {session_id}")
logger.debug(f"Detection results for session {session_id} will be sent via WebSocket")
# Execute branches in parallel # Execute branches in parallel
if hasattr(self.pipeline_config, 'branches') and self.pipeline_config.branches: if hasattr(self.pipeline_config, 'branches') and self.pipeline_config.branches:
@ -1025,11 +1031,16 @@ class DetectionPipeline:
logger.debug(f"Executing parallel action: {action_type}") logger.debug(f"Executing parallel action: {action_type}")
if action_type == 'postgresql_update_combined': if action_type == 'postgresql_update_combined':
result = await self._execute_postgresql_update_combined(action, context) # PostgreSQL action SKIPPED - database operations disabled
logger.info(f"Skipping PostgreSQL action '{action_type}' (disabled)")
result = {'status': 'skipped', 'message': 'PostgreSQL operations disabled'}
# Update session state with processing results after database update # Still update session state for WebSocket messaging
if result.get('status') == 'success': await self._update_session_with_processing_results(context)
await self._update_session_with_processing_results(context)
# result = await self._execute_postgresql_update_combined(action, context)
# if result.get('status') == 'success':
# await self._update_session_with_processing_results(context)
else: else:
logger.warning(f"Unknown parallel action type: {action_type}") logger.warning(f"Unknown parallel action type: {action_type}")
result = {'status': 'error', 'message': f'Unknown action type: {action_type}'} result = {'status': 'error', 'message': f'Unknown action type: {action_type}'}
@ -1132,59 +1143,61 @@ class DetectionPipeline:
logger.error(f"Error in redis_publish action: {e}", exc_info=True) logger.error(f"Error in redis_publish action: {e}", exc_info=True)
return {'status': 'error', 'message': str(e)} return {'status': 'error', 'message': str(e)}
async def _execute_postgresql_update_combined(self, # PostgreSQL update method DISABLED - database operations moved to microservices
action: Dict, # This method is no longer used as data flows via WebSocket messages to backend
context: Dict[str, Any]) -> Dict[str, Any]: # async def _execute_postgresql_update_combined(self,
"""Execute postgresql_update_combined action.""" # action: Dict,
if not self.db_manager: # context: Dict[str, Any]) -> Dict[str, Any]:
return {'status': 'error', 'message': 'Database not available'} # """Execute postgresql_update_combined action."""
# if not self.db_manager:
try: # return {'status': 'error', 'message': 'Database not available'}
# Wait for required branches if specified #
wait_for_branches = action.params.get('waitForBranches', []) # try:
branch_results = context.get('branch_results', {}) # # Wait for required branches if specified
# wait_for_branches = action.params.get('waitForBranches', [])
# Log missing branches but don't block the update (allow partial results) # branch_results = context.get('branch_results', {})
missing_branches = [b for b in wait_for_branches if b not in branch_results] #
if missing_branches: # # Log missing branches but don't block the update (allow partial results)
logger.warning(f"Some branches missing from results (will use null): {missing_branches}") # missing_branches = [b for b in wait_for_branches if b not in branch_results]
available_branches = [b for b in wait_for_branches if b in branch_results] # if missing_branches:
if available_branches: # logger.warning(f"Some branches missing from results (will use null): {missing_branches}")
logger.info(f"Available branches for database update: {available_branches}") # available_branches = [b for b in wait_for_branches if b in branch_results]
# if available_branches:
# Prepare fields for database update # logger.info(f"Available branches for database update: {available_branches}")
table = action.params.get('table', 'car_frontal_info') #
key_field = action.params.get('key_field', 'session_id') # # Prepare fields for database update
key_value = action.params.get('key_value', '{session_id}').format(**context) # table = action.params.get('table', 'car_frontal_info')
field_mappings = action.params.get('fields', {}) # key_field = action.params.get('key_field', 'session_id')
# key_value = action.params.get('key_value', '{session_id}').format(**context)
# Resolve field values using branch results # field_mappings = action.params.get('fields', {})
resolved_fields = {} #
for field_name, field_template in field_mappings.items(): # # Resolve field values using branch results
try: # resolved_fields = {}
# Replace template variables with actual values from branch results # for field_name, field_template in field_mappings.items():
resolved_value = self._resolve_field_template(field_template, branch_results, context) # try:
resolved_fields[field_name] = resolved_value # # Replace template variables with actual values from branch results
except Exception as e: # resolved_value = self._resolve_field_template(field_template, branch_results, context)
logger.warning(f"Failed to resolve field {field_name}: {e}") # resolved_fields[field_name] = resolved_value
resolved_fields[field_name] = None # except Exception as e:
# logger.warning(f"Failed to resolve field {field_name}: {e}")
# Execute database update # resolved_fields[field_name] = None
success = self.db_manager.execute_update( #
table=table, # # Execute database update
key_field=key_field, # success = self.db_manager.execute_update(
key_value=key_value, # table=table,
fields=resolved_fields # key_field=key_field,
) # key_value=key_value,
# fields=resolved_fields
if success: # )
return {'status': 'success', 'table': table, 'key': f'{key_field}={key_value}', 'fields': resolved_fields} #
else: # if success:
return {'status': 'error', 'message': 'Database update failed'} # return {'status': 'success', 'table': table, 'key': f'{key_field}={key_value}', 'fields': resolved_fields}
# else:
except Exception as e: # return {'status': 'error', 'message': 'Database update failed'}
logger.error(f"Error in postgresql_update_combined action: {e}", exc_info=True) #
return {'status': 'error', 'message': str(e)} # except Exception as e:
# logger.error(f"Error in postgresql_update_combined action: {e}", exc_info=True)
# return {'status': 'error', 'message': str(e)}
def _resolve_field_template(self, template: str, branch_results: Dict, context: Dict) -> str: def _resolve_field_template(self, template: str, branch_results: Dict, context: Dict) -> str:
""" """
@ -1270,7 +1283,7 @@ class DetectionPipeline:
'branches': branch_stats, 'branches': branch_stats,
'license_plate': license_stats, 'license_plate': license_stats,
'redis_available': self.redis_manager is not None, 'redis_available': self.redis_manager is not None,
'database_available': self.db_manager is not None, # 'database_available': self.db_manager is not None, # PostgreSQL disabled
'detection_model_loaded': self.detection_model is not None 'detection_model_loaded': self.detection_model is not None
} }
@ -1282,8 +1295,9 @@ class DetectionPipeline:
if self.redis_manager: if self.redis_manager:
self.redis_manager.cleanup() self.redis_manager.cleanup()
if self.db_manager: # PostgreSQL disconnect DISABLED - database operations moved to microservices
self.db_manager.disconnect() # if self.db_manager:
# self.db_manager.disconnect()
if self.branch_processor: if self.branch_processor:
self.branch_processor.cleanup() self.branch_processor.cleanup()

4
core/models/__init__.py
View file

@ -11,7 +11,7 @@ from .pipeline import (
Action, Action,
ActionType, ActionType,
RedisConfig, RedisConfig,
PostgreSQLConfig # PostgreSQLConfig # Disabled - moved to microservices
) )
from .inference import ( from .inference import (
YOLOWrapper, YOLOWrapper,
@ -32,7 +32,7 @@ __all__ = [
'Action', 'Action',
'ActionType', 'ActionType',
'RedisConfig', 'RedisConfig',
'PostgreSQLConfig', # 'PostgreSQLConfig', # Disabled - moved to microservices
# Inference # Inference
'YOLOWrapper', 'YOLOWrapper',

44
core/models/pipeline.py
View file

@ -16,6 +16,8 @@ class ActionType(Enum):
"""Supported action types in pipeline""" """Supported action types in pipeline"""
REDIS_SAVE_IMAGE = "redis_save_image" REDIS_SAVE_IMAGE = "redis_save_image"
REDIS_PUBLISH = "redis_publish" REDIS_PUBLISH = "redis_publish"
# PostgreSQL actions below are DEPRECATED - kept for backward compatibility only
# These actions will be silently skipped during pipeline execution
POSTGRESQL_UPDATE = "postgresql_update" POSTGRESQL_UPDATE = "postgresql_update"
POSTGRESQL_UPDATE_COMBINED = "postgresql_update_combined" POSTGRESQL_UPDATE_COMBINED = "postgresql_update_combined"
POSTGRESQL_INSERT = "postgresql_insert" POSTGRESQL_INSERT = "postgresql_insert"
@ -41,7 +43,15 @@ class RedisConfig:
@dataclass @dataclass
class PostgreSQLConfig: class PostgreSQLConfig:
"""PostgreSQL connection configuration""" """
PostgreSQL connection configuration - DISABLED
NOTE: This configuration is kept for backward compatibility with existing
pipeline.json files, but PostgreSQL operations are disabled. All database
operations have been moved to microservices architecture.
This config will be parsed but not used for any database connections.
"""
host: str host: str
port: int port: int
database: str database: str
@ -50,6 +60,7 @@ class PostgreSQLConfig:
@classmethod @classmethod
def from_dict(cls, data: Dict[str, Any]) -> 'PostgreSQLConfig': def from_dict(cls, data: Dict[str, Any]) -> 'PostgreSQLConfig':
"""Parse PostgreSQL config from dict (kept for backward compatibility)"""
return cls( return cls(
host=data['host'], host=data['host'],
port=data.get('port', 5432), port=data.get('port', 5432),
@ -272,17 +283,19 @@ class PipelineParser:
if not self._validate_actions(self.pipeline_config): if not self._validate_actions(self.pipeline_config):
return False return False
# Validate parallel actions # Validate parallel actions (PostgreSQL actions are skipped)
for action in self.pipeline_config.parallel_actions: for action in self.pipeline_config.parallel_actions:
if action.type == ActionType.POSTGRESQL_UPDATE_COMBINED: if action.type == ActionType.POSTGRESQL_UPDATE_COMBINED:
wait_for = action.params.get('waitForBranches', []) logger.warning(f"PostgreSQL parallel action {action.type.value} found but will be SKIPPED (PostgreSQL disabled)")
if wait_for: # Skip validation for PostgreSQL actions since they won't be executed
# Check that referenced branches exist # wait_for = action.params.get('waitForBranches', [])
branch_ids = self._get_all_branch_ids(self.pipeline_config) # if wait_for:
for branch_id in wait_for: # # Check that referenced branches exist
if branch_id not in branch_ids: # branch_ids = self._get_all_branch_ids(self.pipeline_config)
logger.error(f"Referenced branch '{branch_id}' in waitForBranches not found") # for branch_id in wait_for:
return False # if branch_id not in branch_ids:
# logger.error(f"Referenced branch '{branch_id}' in waitForBranches not found")
# return False
logger.info("Pipeline configuration validated successfully") logger.info("Pipeline configuration validated successfully")
return True return True
@ -305,11 +318,14 @@ class PipelineParser:
logger.error(f"Action {action.type} requires Redis configuration") logger.error(f"Action {action.type} requires Redis configuration")
return False return False
# Validate PostgreSQL actions need PostgreSQL config # PostgreSQL actions are disabled - log warning instead of failing
# Kept for backward compatibility with existing pipeline.json files
if action.type in [ActionType.POSTGRESQL_UPDATE, ActionType.POSTGRESQL_UPDATE_COMBINED, ActionType.POSTGRESQL_INSERT]: if action.type in [ActionType.POSTGRESQL_UPDATE, ActionType.POSTGRESQL_UPDATE_COMBINED, ActionType.POSTGRESQL_INSERT]:
if not self.postgresql_config: logger.warning(f"PostgreSQL action {action.type.value} found but will be SKIPPED (PostgreSQL disabled)")
logger.error(f"Action {action.type} requires PostgreSQL configuration") # Do not fail validation - just skip these actions during execution
return False # if not self.postgresql_config:
# logger.error(f"Action {action.type} requires PostgreSQL configuration")
# return False
# Recursively validate branches # Recursively validate branches
if hasattr(config, 'branches'): if hasattr(config, 'branches'):

9
core/storage/__init__.py
View file

@ -1,10 +1,13 @@
""" """
Storage module for the Python Detector Worker. Storage module for the Python Detector Worker.
This module provides Redis and PostgreSQL operations for data persistence This module provides Redis operations for data persistence
and caching in the detection pipeline. and caching in the detection pipeline.
Note: PostgreSQL operations have been disabled as database functionality
has been moved to microservices architecture.
""" """
from .redis import RedisManager from .redis import RedisManager
from .database import DatabaseManager # from .database import DatabaseManager # Disabled - moved to microservices
__all__ = ['RedisManager', 'DatabaseManager'] __all__ = ['RedisManager'] # Removed 'DatabaseManager'

712
core/storage/database.py
View file

@ -1,357 +1,369 @@
""" """
Database Operations Module. Database Operations Module - DISABLED
Handles PostgreSQL operations for the detection pipeline.
NOTE: This module has been disabled as PostgreSQL database operations have been
moved to microservices architecture. All database connections, reads, and writes
are now handled by separate backend services.
The detection worker now communicates results via:
- WebSocket imageDetection messages (primary data flow to backend)
- Redis image storage and pub/sub (temporary storage)
Original functionality: PostgreSQL operations for the detection pipeline.
Status: Commented out - DO NOT ENABLE without updating architecture
""" """
import psycopg2
import psycopg2.extras # All PostgreSQL functionality below has been commented out
# import psycopg2
# import psycopg2.extras
from typing import Optional, Dict, Any from typing import Optional, Dict, Any
import logging import logging
import uuid # import uuid
logger = logging.getLogger(__name__) logger = logging.getLogger(__name__)
# DatabaseManager class is disabled - all methods commented out
class DatabaseManager: # class DatabaseManager:
""" # """
Manages PostgreSQL connections and operations for the detection pipeline. # Manages PostgreSQL connections and operations for the detection pipeline.
Handles database operations and schema management. # Handles database operations and schema management.
""" # """
#
def __init__(self, config: Dict[str, Any]): # def __init__(self, config: Dict[str, Any]):
""" # """
Initialize database manager with configuration. # Initialize database manager with configuration.
#
Args: # Args:
config: Database configuration dictionary # config: Database configuration dictionary
""" # """
self.config = config # self.config = config
self.connection: Optional[psycopg2.extensions.connection] = None # self.connection: Optional[psycopg2.extensions.connection] = None
#
def connect(self) -> bool: # def connect(self) -> bool:
""" # """
Connect to PostgreSQL database. # Connect to PostgreSQL database.
#
Returns: # Returns:
True if successful, False otherwise # True if successful, False otherwise
""" # """
try: # try:
self.connection = psycopg2.connect( # self.connection = psycopg2.connect(
host=self.config['host'], # host=self.config['host'],
port=self.config['port'], # port=self.config['port'],
database=self.config['database'], # database=self.config['database'],
user=self.config['username'], # user=self.config['username'],
password=self.config['password'] # password=self.config['password']
) # )
logger.info("PostgreSQL connection established successfully") # logger.info("PostgreSQL connection established successfully")
return True # return True
except Exception as e: # except Exception as e:
logger.error(f"Failed to connect to PostgreSQL: {e}") # logger.error(f"Failed to connect to PostgreSQL: {e}")
return False # return False
#
def disconnect(self): # def disconnect(self):
"""Disconnect from PostgreSQL database.""" # """Disconnect from PostgreSQL database."""
if self.connection: # if self.connection:
self.connection.close() # self.connection.close()
self.connection = None # self.connection = None
logger.info("PostgreSQL connection closed") # logger.info("PostgreSQL connection closed")
#
def is_connected(self) -> bool: # def is_connected(self) -> bool:
""" # """
Check if database connection is active. # Check if database connection is active.
#
Returns: # Returns:
True if connected, False otherwise # True if connected, False otherwise
""" # """
try: # try:
if self.connection and not self.connection.closed: # if self.connection and not self.connection.closed:
cur = self.connection.cursor() # cur = self.connection.cursor()
cur.execute("SELECT 1") # cur.execute("SELECT 1")
cur.fetchone() # cur.fetchone()
cur.close() # cur.close()
return True # return True
except: # except:
pass # pass
return False # return False
#
def update_car_info(self, session_id: str, brand: str, model: str, body_type: str) -> bool: # def update_car_info(self, session_id: str, brand: str, model: str, body_type: str) -> bool:
""" # """
Update car information in the database. # Update car information in the database.
#
Args: # Args:
session_id: Session identifier # session_id: Session identifier
brand: Car brand # brand: Car brand
model: Car model # model: Car model
body_type: Car body type # body_type: Car body type
#
Returns: # Returns:
True if successful, False otherwise # True if successful, False otherwise
""" # """
if not self.is_connected(): # if not self.is_connected():
if not self.connect(): # if not self.connect():
return False # return False
#
try: # try:
cur = self.connection.cursor() # cur = self.connection.cursor()
query = """ # query = """
INSERT INTO car_frontal_info (session_id, car_brand, car_model, car_body_type, updated_at) # INSERT INTO car_frontal_info (session_id, car_brand, car_model, car_body_type, updated_at)
VALUES (%s, %s, %s, %s, NOW()) # VALUES (%s, %s, %s, %s, NOW())
ON CONFLICT (session_id) # ON CONFLICT (session_id)
DO UPDATE SET # DO UPDATE SET
car_brand = EXCLUDED.car_brand, # car_brand = EXCLUDED.car_brand,
car_model = EXCLUDED.car_model, # car_model = EXCLUDED.car_model,
car_body_type = EXCLUDED.car_body_type, # car_body_type = EXCLUDED.car_body_type,
updated_at = NOW() # updated_at = NOW()
""" # """
cur.execute(query, (session_id, brand, model, body_type)) # cur.execute(query, (session_id, brand, model, body_type))
self.connection.commit() # self.connection.commit()
cur.close() # cur.close()
logger.info(f"Updated car info for session {session_id}: {brand} {model} ({body_type})") # logger.info(f"Updated car info for session {session_id}: {brand} {model} ({body_type})")
return True # return True
except Exception as e: # except Exception as e:
logger.error(f"Failed to update car info: {e}") # logger.error(f"Failed to update car info: {e}")
if self.connection: # if self.connection:
self.connection.rollback() # self.connection.rollback()
return False # return False
#
def execute_update(self, table: str, key_field: str, key_value: str, fields: Dict[str, str]) -> bool: # def execute_update(self, table: str, key_field: str, key_value: str, fields: Dict[str, str]) -> bool:
""" # """
Execute a dynamic update query on the database. # Execute a dynamic update query on the database.
#
Args: # Args:
table: Table name # table: Table name
key_field: Primary key field name # key_field: Primary key field name
key_value: Primary key value # key_value: Primary key value
fields: Dictionary of fields to update # fields: Dictionary of fields to update
#
Returns: # Returns:
True if successful, False otherwise # True if successful, False otherwise
""" # """
if not self.is_connected(): # if not self.is_connected():
if not self.connect(): # if not self.connect():
return False # return False
#
try: # try:
cur = self.connection.cursor() # cur = self.connection.cursor()
#
# Build the UPDATE query dynamically # # Build the UPDATE query dynamically
set_clauses = [] # set_clauses = []
values = [] # values = []
#
for field, value in fields.items(): # for field, value in fields.items():
if value == "NOW()": # if value == "NOW()":
set_clauses.append(f"{field} = NOW()") # set_clauses.append(f"{field} = NOW()")
else: # else:
set_clauses.append(f"{field} = %s") # set_clauses.append(f"{field} = %s")
values.append(value) # values.append(value)
#
# Add schema prefix if table doesn't already have it # # Add schema prefix if table doesn't already have it
full_table_name = table if '.' in table else f"gas_station_1.{table}" # full_table_name = table if '.' in table else f"gas_station_1.{table}"
#
query = f""" # query = f"""
INSERT INTO {full_table_name} ({key_field}, {', '.join(fields.keys())}) # INSERT INTO {full_table_name} ({key_field}, {', '.join(fields.keys())})
VALUES (%s, {', '.join(['%s'] * len(fields))}) # VALUES (%s, {', '.join(['%s'] * len(fields))})
ON CONFLICT ({key_field}) # ON CONFLICT ({key_field})
DO UPDATE SET {', '.join(set_clauses)} # DO UPDATE SET {', '.join(set_clauses)}
""" # """
#
# Add key_value to the beginning of values list # # Add key_value to the beginning of values list
all_values = [key_value] + list(fields.values()) + values # all_values = [key_value] + list(fields.values()) + values
#
cur.execute(query, all_values) # cur.execute(query, all_values)
self.connection.commit() # self.connection.commit()
cur.close() # cur.close()
logger.info(f"Updated {table} for {key_field}={key_value}") # logger.info(f"Updated {table} for {key_field}={key_value}")
return True # return True
except Exception as e: # except Exception as e:
logger.error(f"Failed to execute update on {table}: {e}") # logger.error(f"Failed to execute update on {table}: {e}")
if self.connection: # if self.connection:
self.connection.rollback() # self.connection.rollback()
return False # return False
#
def create_car_frontal_info_table(self) -> bool: # def create_car_frontal_info_table(self) -> bool:
""" # """
Create the car_frontal_info table in gas_station_1 schema if it doesn't exist. # Create the car_frontal_info table in gas_station_1 schema if it doesn't exist.
#
Returns: # Returns:
True if successful, False otherwise # True if successful, False otherwise
""" # """
if not self.is_connected(): # if not self.is_connected():
if not self.connect(): # if not self.connect():
return False # return False
#
try: # try:
# Since the database already exists, just verify connection # # Since the database already exists, just verify connection
cur = self.connection.cursor() # cur = self.connection.cursor()
#
# Simple verification that the table exists # # Simple verification that the table exists
cur.execute(""" # cur.execute("""
SELECT EXISTS ( # SELECT EXISTS (
SELECT FROM information_schema.tables # SELECT FROM information_schema.tables
WHERE table_schema = 'gas_station_1' # WHERE table_schema = 'gas_station_1'
AND table_name = 'car_frontal_info' # AND table_name = 'car_frontal_info'
) # )
""") # """)
#
table_exists = cur.fetchone()[0] # table_exists = cur.fetchone()[0]
cur.close() # cur.close()
#
if table_exists: # if table_exists:
logger.info("Verified car_frontal_info table exists") # logger.info("Verified car_frontal_info table exists")
return True # return True
else: # else:
logger.error("car_frontal_info table does not exist in the database") # logger.error("car_frontal_info table does not exist in the database")
return False # return False
#
except Exception as e: # except Exception as e:
logger.error(f"Failed to create car_frontal_info table: {e}") # logger.error(f"Failed to create car_frontal_info table: {e}")
if self.connection: # if self.connection:
self.connection.rollback() # self.connection.rollback()
return False # return False
#
def insert_initial_detection(self, display_id: str, captured_timestamp: str, session_id: str = None) -> str: # def insert_initial_detection(self, display_id: str, captured_timestamp: str, session_id: str = None) -> str:
""" # """
Insert initial detection record and return the session_id. # Insert initial detection record and return the session_id.
#
Args: # Args:
display_id: Display identifier # display_id: Display identifier
captured_timestamp: Timestamp of the detection # captured_timestamp: Timestamp of the detection
session_id: Optional session ID, generates one if not provided # session_id: Optional session ID, generates one if not provided
#
Returns: # Returns:
Session ID string or None on error # Session ID string or None on error
""" # """
if not self.is_connected(): # if not self.is_connected():
if not self.connect(): # if not self.connect():
return None # return None
#
# Generate session_id if not provided # # Generate session_id if not provided
if not session_id: # if not session_id:
session_id = str(uuid.uuid4()) # session_id = str(uuid.uuid4())
#
try: # try:
# Ensure table exists # # Ensure table exists
if not self.create_car_frontal_info_table(): # if not self.create_car_frontal_info_table():
logger.error("Failed to create/verify table before insertion") # logger.error("Failed to create/verify table before insertion")
return None # return None
#
cur = self.connection.cursor() # cur = self.connection.cursor()
insert_query = """ # insert_query = """
INSERT INTO gas_station_1.car_frontal_info # INSERT INTO gas_station_1.car_frontal_info
(display_id, captured_timestamp, session_id, license_character, license_type, car_brand, car_model, car_body_type) # (display_id, captured_timestamp, session_id, license_character, license_type, car_brand, car_model, car_body_type)
VALUES (%s, %s, %s, NULL, 'No model available', NULL, NULL, NULL) # VALUES (%s, %s, %s, NULL, 'No model available', NULL, NULL, NULL)
ON CONFLICT (session_id) DO NOTHING # ON CONFLICT (session_id) DO NOTHING
""" # """
#
cur.execute(insert_query, (display_id, captured_timestamp, session_id)) # cur.execute(insert_query, (display_id, captured_timestamp, session_id))
self.connection.commit() # self.connection.commit()
cur.close() # cur.close()
logger.info(f"Inserted initial detection record with session_id: {session_id}") # logger.info(f"Inserted initial detection record with session_id: {session_id}")
return session_id # return session_id
#
except Exception as e: # except Exception as e:
logger.error(f"Failed to insert initial detection record: {e}") # logger.error(f"Failed to insert initial detection record: {e}")
if self.connection: # if self.connection:
self.connection.rollback() # self.connection.rollback()
return None # return None
#
def get_session_info(self, session_id: str) -> Optional[Dict[str, Any]]: # def get_session_info(self, session_id: str) -> Optional[Dict[str, Any]]:
""" # """
Get session information from the database. # Get session information from the database.
#
Args: # Args:
session_id: Session identifier # session_id: Session identifier
#
Returns: # Returns:
Dictionary with session data or None if not found # Dictionary with session data or None if not found
""" # """
if not self.is_connected(): # if not self.is_connected():
if not self.connect(): # if not self.connect():
return None # return None
#
try: # try:
cur = self.connection.cursor(cursor_factory=psycopg2.extras.RealDictCursor) # cur = self.connection.cursor(cursor_factory=psycopg2.extras.RealDictCursor)
query = "SELECT * FROM gas_station_1.car_frontal_info WHERE session_id = %s" # query = "SELECT * FROM gas_station_1.car_frontal_info WHERE session_id = %s"
cur.execute(query, (session_id,)) # cur.execute(query, (session_id,))
result = cur.fetchone() # result = cur.fetchone()
cur.close() # cur.close()
#
if result: # if result:
return dict(result) # return dict(result)
else: # else:
logger.debug(f"No session info found for session_id: {session_id}") # logger.debug(f"No session info found for session_id: {session_id}")
return None # return None
#
except Exception as e: # except Exception as e:
logger.error(f"Failed to get session info: {e}") # logger.error(f"Failed to get session info: {e}")
return None # return None
#
def delete_session(self, session_id: str) -> bool: # def delete_session(self, session_id: str) -> bool:
""" # """
Delete session record from the database. # Delete session record from the database.
#
Args: # Args:
session_id: Session identifier # session_id: Session identifier
#
Returns: # Returns:
True if successful, False otherwise # True if successful, False otherwise
""" # """
if not self.is_connected(): # if not self.is_connected():
if not self.connect(): # if not self.connect():
return False # return False
#
try: # try:
cur = self.connection.cursor() # cur = self.connection.cursor()
query = "DELETE FROM gas_station_1.car_frontal_info WHERE session_id = %s" # query = "DELETE FROM gas_station_1.car_frontal_info WHERE session_id = %s"
cur.execute(query, (session_id,)) # cur.execute(query, (session_id,))
rows_affected = cur.rowcount # rows_affected = cur.rowcount
self.connection.commit() # self.connection.commit()
cur.close() # cur.close()
#
if rows_affected > 0: # if rows_affected > 0:
logger.info(f"Deleted session record: {session_id}") # logger.info(f"Deleted session record: {session_id}")
return True # return True
else: # else:
logger.warning(f"No session record found to delete: {session_id}") # logger.warning(f"No session record found to delete: {session_id}")
return False # return False
#
except Exception as e: # except Exception as e:
logger.error(f"Failed to delete session: {e}") # logger.error(f"Failed to delete session: {e}")
if self.connection: # if self.connection:
self.connection.rollback() # self.connection.rollback()
return False # return False
#
def get_statistics(self) -> Dict[str, Any]: # def get_statistics(self) -> Dict[str, Any]:
""" # """
Get database statistics. # Get database statistics.
#
Returns: # Returns:
Dictionary with database statistics # Dictionary with database statistics
""" # """
stats = { # stats = {
'connected': self.is_connected(), # 'connected': self.is_connected(),
'host': self.config.get('host', 'unknown'), # 'host': self.config.get('host', 'unknown'),
'port': self.config.get('port', 'unknown'), # 'port': self.config.get('port', 'unknown'),
'database': self.config.get('database', 'unknown') # 'database': self.config.get('database', 'unknown')
} # }
#
if self.is_connected(): # if self.is_connected():
try: # try:
cur = self.connection.cursor() # cur = self.connection.cursor()
#
# Get table record count # # Get table record count
cur.execute("SELECT COUNT(*) FROM gas_station_1.car_frontal_info") # cur.execute("SELECT COUNT(*) FROM gas_station_1.car_frontal_info")
stats['total_records'] = cur.fetchone()[0] # stats['total_records'] = cur.fetchone()[0]
#
# Get recent records count (last hour) # # Get recent records count (last hour)
cur.execute(""" # cur.execute("""
SELECT COUNT(*) FROM gas_station_1.car_frontal_info # SELECT COUNT(*) FROM gas_station_1.car_frontal_info
WHERE created_at > NOW() - INTERVAL '1 hour' # WHERE created_at > NOW() - INTERVAL '1 hour'
""") # """)
stats['recent_records'] = cur.fetchone()[0] # stats['recent_records'] = cur.fetchone()[0]
#
cur.close() # cur.close()
except Exception as e: # except Exception as e:
logger.warning(f"Failed to get database statistics: {e}") # logger.warning(f"Failed to get database statistics: {e}")
stats['error'] = str(e) # stats['error'] = str(e)
#
return stats # return stats