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synergy-scheduler-manager
Code Issues Proposed changes

Add support for the automatic recycle of DB connections 

This solves the error 'Lost connection to MySQL server during query'
due to MySQL, which removes connections after a timeout.

- added a new configuration parameter for QueueManager: 'db_pool_recycle'

Change-Id: I2974f414afa6cb3d44e85dd3e05600cfd49cb905
Sem-Ver: bugfix
This commit is contained in:
Lisa Zangrando 2017-01-25 10:03:35 +01:00
parent 358d5d453d
commit a858311eb9
1 changed files with 3 additions and 0 deletions
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3
synergy_scheduler_manager/queue_manager.py
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@ -36,6 +36,7 @@ class QueueManager(Manager):
self.config_opts = [
cfg.StrOpt("db_connection", help="the DB url", required=True),
cfg.IntOpt('db_pool_size', default=10, required=False),
cfg.IntOpt('db_pool_recycle', default=30, required=False),
cfg.IntOpt('db_max_overflow', default=5, required=False)
]
self.queue_list = {}
@ -51,11 +52,13 @@ class QueueManager(Manager):
db_connection = CONF.QueueManager.db_connection
pool_size = CONF.QueueManager.db_pool_size
pool_recycle = CONF.QueueManager.db_pool_recycle
max_overflow = CONF.QueueManager.db_max_overflow
try:
self.db_engine = create_engine(db_connection,
pool_size=pool_size,
pool_recycle=pool_recycle,
max_overflow=max_overflow)
except Exception as ex:
LOG.error(ex)