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[tycho-user] old update sites
Hi all,

I just encountered a problem with an "old" update site (i.e. pre p2 era). When running the build for a project where the target definition references this old update site I get the following error printed:

[INFO] Adding repositoryhttp://wireframesketcher.com/updates/archive
[INFO] Fetching site.xml fromhttp://wireframesketcher.com/updates/archive/ (0B at 0B/s)
[ERROR] Internal error: java.lang.RuntimeException: Failed to resolve target definition /home/hudson/hudson_home/jobs/test-compile/workspace/test/test.target: Failed to load p2 metadata repository from locationhttp://wireframesketcher.com/updates/archive: No repository found athttp://wireframesketcher.com/updates/archive. -> [Help 1]
org.apache.maven.InternalErrorException: Internal error: java.lang.RuntimeException: Failed to resolve target definition /home/hudson/hudson_home/jobs/test-compile/workspace/test/test.target
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:166)
at org.jvnet.hudson.maven3.launcher.Maven31Launcher.main(Maven31Launcher.java:132)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchStandard(Launcher.java:330)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:238)
at jenkins.maven3.agent.Maven31Main.launch(Maven31Main.java:181)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at hudson.maven.Maven3Builder.call(Maven3Builder.java:134)
at hudson.maven.Maven3Builder.call(Maven3Builder.java:69)
at hudson.remoting.UserRequest.perform(UserRequest.java:118)
at hudson.remoting.UserRequest.perform(UserRequest.java:48)
at hudson.remoting.Request$2.run(Request.java:328)
at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.RuntimeException: Failed to resolve target definition /home/hudson/hudson_home/jobs/test-compile/workspace/test/test.target
at org.eclipse.tycho.p2.target.TargetDefinitionResolver.resolveContent(TargetDefinitionResolver.java:91)
at org.eclipse.tycho.p2.target.TargetDefinitionResolverService.resolveFromArguments(TargetDefinitionResolverService.java:70)
at org.eclipse.tycho.p2.target.TargetDefinitionResolverService.getTargetDefinitionContent(TargetDefinitionResolverService.java:60)
at org.eclipse.tycho.p2.target.TargetPlatformFactoryImpl.resolveTargetDefinitions(TargetPlatformFactoryImpl.java:213)
at org.eclipse.tycho.p2.target.TargetPlatformFactoryImpl.createTargetPlatform(TargetPlatformFactoryImpl.java:153)
at org.eclipse.tycho.p2.target.TargetPlatformFactoryImpl.createTargetPlatform(TargetPlatformFactoryImpl.java:126)
at org.eclipse.tycho.p2.target.TargetPlatformFactoryImpl.createTargetPlatform(TargetPlatformFactoryImpl.java:1)
at org.eclipse.tycho.p2.manager.ReactorRepositoryManagerImpl.computePreliminaryTargetPlatform(ReactorRepositoryManagerImpl.java:82)
at org.eclipse.tycho.p2.resolver.P2DependencyResolver.computePreliminaryTargetPlatform(P2DependencyResolver.java:215)
at org.eclipse.tycho.core.resolver.DefaultTychoResolver.resolveProject(DefaultTychoResolver.java:99)
at org.eclipse.tycho.core.maven.TychoMavenLifecycleParticipant.afterProjectsRead(TychoMavenLifecycleParticipant.java:75)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:310)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:154)
... 22 more
Caused by: org.eclipse.tycho.p2.target.facade.TargetDefinitionResolutionException: Failed to load p2 metadata repository from locationhttp://wireframesketcher.com/updates/archive
at org.eclipse.tycho.p2.target.TargetDefinitionResolver.loadRepository(TargetDefinitionResolver.java:210)
at org.eclipse.tycho.p2.target.TargetDefinitionResolver.resolveContentWithExceptions(TargetDefinitionResolver.java:127)
at org.eclipse.tycho.p2.target.TargetDefinitionResolver.resolveContent(TargetDefinitionResolver.java:86)
... 34 more
Caused by: org.eclipse.equinox.p2.core.ProvisionException: No repository found athttp://wireframesketcher.com/updates/archive.
at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.fail(AbstractRepositoryManager.java:395)
at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository(AbstractRepositoryManager.java:692)
at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository(MetadataRepositoryManager.java:96)
at org.eclipse.tycho.p2.remote.RemoteMetadataRepositoryManager.loadRepository(RemoteMetadataRepositoryManager.java:59)
at org.eclipse.tycho.p2.remote.RemoteMetadataRepositoryManager.loadRepository(RemoteMetadataRepositoryManager.java:52)
at org.eclipse.tycho.p2.target.TargetDefinitionResolver.loadRepository(TargetDefinitionResolver.java:208)
... 36 more

So it would seem like Tycho doesn't quite understand the old update sites. Although the error message does mention the site.xml ("Fetching site.xml from ...") so it seems like it at least understands them somewhat.

To solve this I decided to set up a local mirror of the old update site, but one which is a proper p2 repository. (See for example here: http://jutzig.wordpress.com/2012/06/07/how-to-mirror-eclipse-p2-repositories/.) But since I also knew about the Tycho p2 mirroring utility (plugin tycho-p2-extras-plugin goal mirror) I tried with that. To my big surprise this worked. I ended up with a p2 mirror of the "old" update site.

So it seems like Tycho does understand old update sites. Assuming that it is intentional that Tycho currently doesn't support old update sites during the target resolution, would it make sense to extend Tycho to be able to do this on the fly when resolving the target definition. That way I would not have to set up the local mirror.

Kind regards,

Knut Wannheden

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