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Provide OSGi condition which is fulfilled once all required org.ehcache.core.spi.service.ServiceFactory objects are provided #3232

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kwin opened this issue Jun 21, 2024 · 1 comment · May be fixed by #3233
Open

Provide OSGi condition which is fulfilled once all required org.ehcache.core.spi.service.ServiceFactory objects are provided #3232

kwin opened this issue Jun 21, 2024 · 1 comment · May be fixed by #3233

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@kwin
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kwin commented Jun 21, 2024 •
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If one uses the API outlined in https://www.ehcache.org/documentation/3.9/getting-started.html via CacheManagerBuilder.newCacheManagerBuilder() .build() too early in OSGi runtimes (i.e. when the services of type org.ehcache.core.spi.service.ServiceFactory have not yet been registered) it fails with

ServiceLocator$DependencyException: Failed to find provider with satisfied dependency set for interface org.ehcache.core.events.CacheEventListenerProvider [candidates []]
  at org.ehcache.core.spi.ServiceLocator$DependencySet.build(ServiceLocator.java:350)
  at org.ehcache.core.EhcacheManager.resolveServices(EhcacheManager.java:154) 
  at org.ehcache.core.EhcacheManager.<init>(EhcacheManager.java:125)
  at org.ehcache.core.EhcacheManager.<init>(EhcacheManager.java:115) 
  at org.ehcache.core.EhcacheManager.<init>(EhcacheManager.java:111)
  at com.novonordisk.hcp.integrations.shade.ehcache.config.builders.CacheManagerBuilder.newCacheManager

The above happens with Ehcache 3.9.9 (for other versions the line numbers may differ)

In order to programmatically prevent this race condition, please provide a OSGi condition which is only satisfied once all necessary ServiceFactory service are registered.
@kwin
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kwin commented Jun 21, 2024

This would also require an extension to the documentation at https://www.ehcache.org/documentation/3.9/osgi.html.

kwin added a commit to kwin/ehcache3 that referenced this issue Jun 21, 2024
@kwin
Add OSGi condition which is satisfied once the default Ehcache services
d4679c9 
are registered

This allows to defer starting of custom OSGi DS component which rely on
the EhcacheManager in their activate() method until the Ehcache services
are registered

This closes ehcache#3232
@kwin kwin linked a pull request Jun 21, 2024 that will close this issue
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kwin added a commit to kwin/ehcache3 that referenced this issue Jun 23, 2024
@kwin
Add OSGi condition which is satisfied once the default Ehcache services
824edfe 
are registered

This allows to defer starting of custom OSGi DS component which rely on
the EhcacheManager in their activate() method until the Ehcache services
are registered

This closes ehcache#3232
kwin added a commit to kwin/ehcache3 that referenced this issue Jun 23, 2024
@kwin
Add OSGi condition which is satisfied once the default Ehcache services
6ce73c4 
are registered

This allows to defer starting of custom OSGi DS component which rely on
the EhcacheManager in their activate() method until the Ehcache services
are registered

This closes ehcache#3232
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Add OSGi condition which is satisfied once the default Ehcache services kwin/ehcache3
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@kwin