FreeDATA/modem/message_system_db_messages.py

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from message_system_db_manager import DatabaseManager
from message_system_db_attachments import DatabaseManagerAttachments
from message_system_db_model import Status, P2PMessage
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from sqlalchemy.exc import IntegrityError
from datetime import datetime
import json
class DatabaseManagerMessages(DatabaseManager):
def __init__(self, uri='sqlite:///freedata-messages.db'):
super().__init__(uri)
self.attachments_manager = DatabaseManagerAttachments(uri)
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def add_message(self, message_data, statistics, direction='receive', status=None, is_read=True):
session = self.get_thread_scoped_session()
try:
# Create and add the origin and destination Stations
origin = self.get_or_create_station(message_data['origin'], session)
destination = self.get_or_create_station(message_data['destination'], session)
# Create and add Status if provided
if status:
status = self.get_or_create_status(session, status)
# Parse the timestamp from the message ID
timestamp = datetime.fromisoformat(message_data['id'].split('_')[2])
# Create the P2PMessage instance
new_message = P2PMessage(
id=message_data['id'],
origin_callsign=origin.callsign,
destination_callsign=destination.callsign,
body=message_data['body'],
timestamp=timestamp,
direction=direction,
status_id=status.id if status else None,
is_read=is_read,
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attempt=0,
statistics=statistics
)
session.add(new_message)
# Process and add attachments
if 'attachments' in message_data:
for attachment_data in message_data['attachments']:
self.attachments_manager.add_attachment(session, new_message, attachment_data)
session.commit()
self.log(f"Added data to database: {new_message.id}")
self.event_manager.freedata_message_db_change()
return new_message.id
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except IntegrityError as e:
session.rollback() # Roll back the session to a clean state
self.log(f"Message with ID {message_data['id']} already exists in the database.", isWarning=True)
return None # or you might return the existing message's ID or details
except Exception as e:
session.rollback()
self.log(f"error adding new message to database with error: {e}", isWarning=True)
finally:
session.remove()
def get_all_messages(self):
session = self.get_thread_scoped_session()
try:
messages = session.query(P2PMessage).all()
return [message.to_dict() for message in messages]
except Exception as e:
self.log(f"error fetching database messages with error: {e}", isWarning=True)
self.log(f"---> please delete or update existing database", isWarning=True)
return []
finally:
session.remove()
def get_all_messages_json(self):
messages_dict = self.get_all_messages()
messages_with_header = {'total_messages' : len(messages_dict), 'messages' : messages_dict}
return messages_with_header
def get_message_by_id(self, message_id):
session = self.get_thread_scoped_session()
try:
message = session.query(P2PMessage).filter_by(id=message_id).first()
if message:
return message.to_dict()
else:
return None
except Exception as e:
self.log(f"Error fetching message with ID {message_id}: {e}", isWarning=True)
return None
finally:
session.remove()
def get_message_by_id_json(self, message_id):
message_dict = self.get_message_by_id(message_id)
return json.dumps(message_dict) # Convert to JSON string
def delete_message(self, message_id):
session = self.get_thread_scoped_session()
try:
message = session.query(P2PMessage).filter_by(id=message_id).first()
if message:
session.delete(message)
session.commit()
self.log(f"Deleted: {message_id}")
self.event_manager.freedata_message_db_change()
return {'status': 'success', 'message': f'Message {message_id} deleted'}
else:
return {'status': 'failure', 'message': 'Message not found'}
except Exception as e:
session.rollback()
self.log(f"Error deleting message with ID {message_id}: {e}", isWarning=True)
return {'status': 'failure', 'message': str(e)}
finally:
session.remove()
def update_message(self, message_id, update_data):
session = self.get_thread_scoped_session()
try:
message = session.query(P2PMessage).filter_by(id=message_id).first()
if message:
# Update fields of the message as per update_data
if 'body' in update_data:
message.body = update_data['body']
if 'status' in update_data:
message.status = self.get_or_create_status(session, update_data['status'])
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if 'statistics' in update_data:
message.statistics = update_data['statistics']
session.commit()
self.log(f"Updated: {message_id}")
self.event_manager.freedata_message_db_change()
return {'status': 'success', 'message': f'Message {message_id} updated'}
else:
return {'status': 'failure', 'message': 'Message not found'}
except Exception as e:
session.rollback()
self.log(f"Error updating message with ID {message_id}: {e}", isWarning=True)
return {'status': 'failure', 'message': str(e)}
finally:
session.remove()
def get_first_queued_message(self):
session = self.get_thread_scoped_session()
try:
# Find the status object for "queued"
queued_status = session.query(Status).filter_by(name='queued').first()
if queued_status:
# Query for the first (oldest) message with status "queued"
message = session.query(P2PMessage)\
.filter_by(status=queued_status)\
.order_by(P2PMessage.timestamp)\
.first()
if message:
self.log(f"Found queued message with ID {message.id}")
return message.to_dict()
else:
return None
else:
self.log("Queued status not found", isWarning=True)
return None
except Exception as e:
self.log(f"Error fetching the first queued message: {e}", isWarning=True)
return None
finally:
session.remove()
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def increment_message_attempts(self, message_id, session=None):
own_session = False
if not session:
session = self.get_thread_scoped_session()
own_session = True
try:
message = session.query(P2PMessage).filter_by(id=message_id).first()
if message:
message.attempt += 1
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if own_session:
session.commit()
self.log(f"Incremented attempt count for message {message_id}")
else:
self.log(f"Message with ID {message_id} not found")
except Exception as e:
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if own_session:
session.rollback()
self.log(f"An error occurred while incrementing attempts for message {message_id}: {e}")
finally:
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if own_session:
session.remove()
def mark_message_as_read(self, message_id):
session = self.get_thread_scoped_session()
try:
message = session.query(P2PMessage).filter_by(id=message_id).first()
if message:
message.is_read = True
session.commit()
self.log(f"Marked message {message_id} as read")
else:
self.log(f"Message with ID {message_id} not found")
except Exception as e:
session.rollback()
self.log(f"An error occurred while marking message {message_id} as read: {e}")
finally:
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session.remove()
def set_message_to_queued_for_callsign(self, callsign):
session = self.get_thread_scoped_session()
try:
# Find the 'failed' status object
failed_status = session.query(Status).filter_by(name='failed').first()
# Find the 'queued' status object
queued_status = session.query(Status).filter_by(name='queued').first()
# Ensure both statuses are found
if not failed_status or not queued_status:
self.log("Failed or queued status not found", isWarning=True)
return
# Query for messages with the specified callsign, 'failed' status, and fewer than 10 attempts
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message = session.query(P2PMessage) \
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.filter(P2PMessage.destination_callsign == callsign) \
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.filter(P2PMessage.status_id == failed_status.id) \
.filter(P2PMessage.attempt < 10) \
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.first()
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if message:
# Increment attempt count using the existing function
self.increment_message_attempts(message.id, session)
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message.status_id = queued_status.id
self.log(f"Set message {message.id} to queued and incremented attempt")
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session.commit()
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return {'status': 'success', 'message': f'{len(message)} message(s) set to queued'}
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else:
return {'status': 'failure', 'message': 'No eligible messages found'}
except Exception as e:
session.rollback()
self.log(f"An error occurred while setting messages to queued: {e}", isWarning=True)
return {'status': 'failure', 'message': str(e)}
finally:
session.remove()