Possibility to put server in maintenance mode and reload synapse configuration
via JMX
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Key: SYNAPSE-537
URL: https://issues.apache.org/jira/browse/SYNAPSE-537
Project: Synapse
Issue Type: New Feature
Components: Core
Affects Versions: NIGHTLY
Reporter: Eric Hubert
Fix For: 1.3
Attachments: ServerManager.patch
Unfortunately I did not find the old issue we had for this, so I created a new
one. The provided patch extends the existing server states with a maintenance
state. While entering the maintenance mode all transports supporting a pause
operation are paused. So no new requests will be accepted. Once all requests in
progress are finished the server can be safely restarted to load a changed
configuration. If running in a clustered environment behind a loadbalancer
this allows dynamic configuration updates.
All server state changes can be triggered via JMX using an extended
ServerManagerMBean which can also be used to query the current server state.
While working on this patch I thought about moving some of the classes in the
synapse top level package to a new server subpackage. I actually did not
perform this change to ease the review, but I still think it would be a good
idea.
So what about moving the following classes:
Axis2SynapseController
JmxAdapter
ServerConfigurationInformation
ServerConfigurationInformationFactory
ServerContextInformation
ServerManager
ServerState
ServerStateDetectionStrategy
SynapseController
SynapseControllerFactory
SynapseServer
to
synapse.server
and
ServerManagerView
ServerManagerViewMBean
to
synapse.server.mbean (maybe also renaming them to ServerManagerControl and
ServerManagerControlMBean.
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