db_ack function

Positive or negative ackowledgement

If positive, then we need to remove the message from the queue. If negative, we just set the status to FAILED.

db_ack(db, queue, id, lock, success)

Arguments

• db: DB file.
• queue: Queue name.
• id: Message id.
• lock: Name of the message lock file.
• success: Whether this is a positive or negative ACK.