Concurrency issues with optional dependencies in HttpContextManagerServiceImpl,
ResourceProviderListener and WinkRegistrationServiceImpl
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Key: AMDATU-372
URL: http://jira.amdatu.org/jira/browse/AMDATU-372
Project: Amdatu
Issue Type: Bug
Components: Amdatu Web
Affects Versions: 0.2.0
Reporter: Ivo Ladage - van Doorn
Assignee: Bram de Kruijff
When a service defines optional dependencies, the methods onAdded and onRemoved
can be invoked concurrently with the invocation of destroy() on that service.
This means that the implementation of the destroy and onAdded/onRemoved must be
prepared to be invoked simultaneously by different threads. The following
classes therefore need to be refactored as they do not properly handle
concurrency:
HttpContextManagerServiceImpl
- addResourceProvider can be invoked concurrently, so
getOrCreateContextComponentTuple should at least be synchronized
ResourceProviderListener
- stop and resourceProviderAdded can be invoked concurrently
WinkRegistrationServiceImpl
- onAdded and destroy can be invoked concurrently
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