Some Eclipse Foundation services are deprecated, or will be soon. Please ensure you've read this important communication.

Bug 356195

Summary:	No root cause in log if download fails due to network problems
Product:	z_Archived	Reporter:	Tobias Oberlies <t-oberlies>
Component:	Tycho	Assignee:	Tobias Oberlies <t-oberlies>
Status:	RESOLVED FIXED	QA Contact:
Severity:	minor
Priority:	P2
Version:	unspecified
Target Milestone:	---
Hardware:	All
OS:	All
Whiteboard:

Description Tobias Oberlies

2011-08-30 09:07:36 EDT

If a download of a p2 artifact fails erratically (I presume a network problem, because a rebuild fixed the issue), there is no information in the log about the root cause. The message "Could not download artifacts from any repository" could be misunderstood as "the artifact doesn't exist" rather than "the artifact couldn't be transferred". These cases should be distinguished.

Comment 1 Tobias Oberlies

2013-06-24 11:49:32 EDT

With change https://git.eclipse.org/r/#/c/9333/ a failed download will lead to an exception with the full multi-status of the download. For the first failure, even the stack trace of p2 is shown as root cause.

Example for a download that failed because both pack200 and canonical format were broken:

org.eclipse.tycho.repository.local.MirroringArtifactProvider$MirroringFailedException: Could not mirror artifact osgi.bundle,com.jcraft.jsch,0.1.46.v201205102330 into the local Maven repository: All attempts to read artifact osgi.bundle,com.jcraft.jsch,0.1.46.v201205102330 failed: [An error occurred while transferring artifact osgi.bundle,com.jcraft.jsch,0.1.46.v201205102330 from repository file:/C:/Env/Source/Tycho/tycho-testbed/repository: [An error occurred copying file C:\Env\Source\Tycho\tycho-testbed\repository\plugins\com.jcraft.jsch_0.1.46.v201205102330.jar.pack.gz.]; An error occurred while transferring artifact osgi.bundle,com.jcraft.jsch,0.1.46.v201205102330 from repository file:/C:/Env/Source/Tycho/tycho-testbed/repository: [An error occurred copying file C:\Env\Source\Tycho\tycho-testbed\repository\plugins\com.jcraft.jsch_0.1.46.v201205102330.jar.]]
	at org.eclipse.tycho.repository.local.MirroringArtifactProvider.downloadArtifact(MirroringArtifactProvider.java:212)
	at org.eclipse.tycho.repository.local.MirroringArtifactProvider.makeOneFormatLocallyAvailable(MirroringArtifactProvider.java:197)
	at org.eclipse.tycho.repository.local.MirroringArtifactProvider.makeLocallyAvailable(MirroringArtifactProvider.java:168)
	at org.eclipse.tycho.repository.local.MirroringArtifactProvider.getArtifactFile(MirroringArtifactProvider.java:112)
	at org.eclipse.tycho.repository.p2base.artifact.provider.CompositeArtifactProvider.getArtifactFile(CompositeArtifactProvider.java:70)
	at org.eclipse.tycho.p2.target.TargetPlatformImpl.getLocalArtifactFile(TargetPlatformImpl.java:167)
	at org.eclipse.tycho.p2.impl.resolver.P2ResolverImpl.addArtifactFile(P2ResolverImpl.java:178)
	at org.eclipse.tycho.p2.impl.resolver.P2ResolverImpl.toResolutionResult(P2ResolverImpl.java:152)
	at org.eclipse.tycho.p2.impl.resolver.P2ResolverImpl.resolveDependencies(P2ResolverImpl.java:133)
	at org.eclipse.tycho.p2.impl.resolver.P2ResolverImpl.resolveDependencies(P2ResolverImpl.java:81)
	at org.eclipse.tycho.p2.resolver.P2TargetPlatformResolver.doResolvePlatform(P2TargetPlatformResolver.java:374)
	at org.eclipse.tycho.p2.resolver.P2TargetPlatformResolver.resolveDependencies(P2TargetPlatformResolver.java:350)
	at org.eclipse.tycho.core.resolver.DefaultTychoDependencyResolver.resolveProject(DefaultTychoDependencyResolver.java:109)
	at org.eclipse.tycho.core.maven.TychoMavenLifecycleParticipant.afterProjectsRead(TychoMavenLifecycleParticipant.java:82)
	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:273)
	at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
	... 11 more
Caused by: java.io.FileNotFoundException: C:\Env\Source\Tycho\tycho-testbed\repository\plugins\com.jcraft.jsch_0.1.46.v201205102330.jar.pack.gz (The system cannot find the file specified)
	at java.io.FileInputStream.open(Native Method)
	at java.io.FileInputStream.<init>(FileInputStream.java:120)
	at org.eclipse.equinox.internal.p2.artifact.repository.simple.SimpleArtifactRepository.copyFileToStream(SimpleArtifactRepository.java:641)
	at org.eclipse.equinox.internal.p2.artifact.repository.simple.SimpleArtifactRepository.downloadArtifact(SimpleArtifactRepository.java:666)
	at org.eclipse.equinox.internal.p2.artifact.repository.simple.SimpleArtifactRepository.downloadArtifact(SimpleArtifactRepository.java:590)
	at org.eclipse.equinox.internal.p2.artifact.repository.simple.SimpleArtifactRepository.getArtifact(SimpleArtifactRepository.java:723)
	at org.eclipse.tycho.repository.p2base.artifact.repository.RepositoryArtifactProvider.getArtifactFromAnyMirror(RepositoryArtifactProvider.java:168)
	at org.eclipse.tycho.repository.p2base.artifact.repository.RepositoryArtifactProvider.getArtifactFromAnyFormatAvailableInRepository(RepositoryArtifactProvider.java:151)
	at org.eclipse.tycho.repository.p2base.artifact.repository.RepositoryArtifactProvider.getArtifactFromAnySource(RepositoryArtifactProvider.java:136)
	at org.eclipse.tycho.repository.p2base.artifact.provider.CompositeArtifactProviderBaseImpl.getArtifact(CompositeArtifactProviderBaseImpl.java:52)
	at org.eclipse.tycho.repository.local.MirroringArtifactProvider.downloadCanonicalArtifact(MirroringArtifactProvider.java:231)
	at org.eclipse.tycho.repository.local.MirroringArtifactProvider.downloadMostSpecificNeededFormatOfArtifact(MirroringArtifactProvider.java:224)
	at org.eclipse.tycho.repository.local.MirroringArtifactProvider.downloadArtifact(MirroringArtifactProvider.java:208)
	... 26 more

Comment 2 Tobias Oberlies

2013-07-08 05:32:31 EDT

This problem is fixed as part of this larger commit: http://git.eclipse.org/c/tycho/org.eclipse.tycho.git/commit/?id=9fa0c707522eb0dcf37be2cec4d6a99d6c9bb484