x/synergy-scheduler-manager
Code Issues Proposed changes

Add support for the automatic recycle of DB connections

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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)