Re: [tycho-dev] Duplicate bundle versions with different checksums

["Sievers, Jan" <jan.sievers@xxxxxxx>]

Eclipse-SourceReference is supposed to help with importing sources for a given binary bundle (I think EGit has support for this).
Typically you would import many/all bundles from a given git repo so different commit IDs for each bundle may not be very helpful for this scenario.

Jan

> -----Original Message-----
> From: tycho-dev-bounces@xxxxxxxxxxx [mailto:tycho-dev-bounces@xxxxxxxxxxx] On
> Behalf Of Igor Fedorenko
> Sent: Dienstag, 12. Mai 2015 13:05
> To: tycho-dev@xxxxxxxxxxx
> Subject: Re: [tycho-dev] Duplicate bundle versions with different checksums
> 
> I think there are couple of problems there.
> 
> First, tycho-sourceref-jgit uses current branch HEAD commit, which can
> change without changes to the project. I think proper behaviour should
> be to use most recent commit that changed the project (this is how
> tycho-buildtimestamp-jgit works).
> 
> Second, you need to enable baseline-build comparison to guarantee same
> bundle-id/version has the identical content. You can read more about
> configuration and what this does internally in [1]
> 
> [1] https://wiki.eclipse.org/Tycho/Reproducible_Version_Qualifiers
> 
> --
> Regards,
> Igor
> 
> On Tue, May 12, 2015, at 04:15 AM, Jens Reimann wrote:
> > Hi,
> >
> > I just stumbled over an odd which I would like to understand better.
> >
> > When creating a composite P2 repository (with Package Drone) out of
> > different P2 XML Fragments for Eclipse SCADA/openSCADA build artifacts
> > (same for other builds artifacts) I got a "MD5 hash is not as expected"
> > error when using P2 to access the repository.
> >
> > Now this is simply caused by the fact that there are two full builds in
> > the same channel, providing OSGI bundles built by Maven Tycho, which
> > have the same bundle ID and the same version, but different content.
> >
> > The duplicate bundles are not in the same build, but in two successive
> > builds! With no apparent change in the SCM (git).
> >
> > Tycho is configured to provide build timestamps using the jgit plugin.
> >
> > ---
> >         <tycho-version>0.21.0</tycho-version>
> >         <tycho-extras-version>0.21.0</tycho-extras-version>
> > ---
> >             <!-- build qualifier -->
> >             <plugin>
> >
> > <groupId>org.eclipse.tycho</groupId><artifactId>tycho-packaging-
> plugin</artifactId><version>${tycho-version}</version>
> >                 <dependencies>
> >                     <dependency>
> >
> > <groupId>org.eclipse.tycho.extras</groupId><artifactId>tycho-
> buildtimestamp-jgit</artifactId><version>${tycho-extras-version}</version>
> >                     </dependency>
> >                     <dependency>
> >
> > <groupId>org.eclipse.tycho.extras</groupId><artifactId>tycho-sourceref-
> jgit</artifactId><version>${tycho-extras-version}</version>
> >                     </dependency>
> >                 </dependencies>
> >                 <configuration>
> >                     <timestampProvider>jgit</timestampProvider>
> >                     <jgit.ignore>
> >                         pom.xml
> >                         CHANGES.txt
> >                     </jgit.ignore>
> >                     <format>'v'yyyyMMdd-HHmm</format>
> >                     <sourceReferences>
> >                         <generate>true</generate>
> >                     </sourceReferences>
> >                 </configuration>
> >             </plugin>
> > ---
> >
> > Now the actual change in the bundles is the line
> > "Eclipse-SourceReferences" which is:
> >
> >     Eclipse-SourceReferences:
> >
> scm:git:git://git.openscada.org/org.openscada.atlantis.git;path="org.openscad
> a.da.server.opc.edit";commitId=7bdba134ffa8e1b936a9f8689a6e4cb9451ef98c
> >
> > and for the second
> >
> >     Eclipse-SourceReferences:
> >
> scm:git:git://git.openscada.org/org.openscada.atlantis.git;path="org.openscad
> a.da.server.opc.edit";commitId=83b5554178acfa8979ab6393cdb5fb1eeeb79017
> >
> > resulting in the same version:
> >
> >     Bundle-Version: 1.2.0.v20141105-0956
> >
> > Now I would expect that a different MANIFEST.MF also produces a
> > different version?!
> >
> > Thanks for helping
> >
> > Jens
> >
> >
> >
> >
> >
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