github/jgit - jgit - 帆软第三方插件仓库

Author	SHA1	Message	Date
Shawn O. Pearce	fc5fc70e2e	Switch build to Apache Felix maven-bundle-plugin Tycho isn't production ready for projects like JGit to be using as their primary build driver. Some problems we ran into with Tycho 0.6.0 that are preventing us from using it are: * Tycho can't run offline The P2 artifact resolver cannot perform its work offline. If the build system has no network connection, it cannot compile a project through Tycho. This is insane for a distributed version control system where developers are used to being offline during development and local testing. * Magic state in ~/.m2/repository/.meta/p2-metadata.properties Earlier iterations of this patch tried to use a hybrid build, where Tycho was only used for the Eclipse specific feature and P2 update site, and maven-bundle-plugin was used for the other code. This build seemed to work, but only due to magic Tycho specific state held in my local home directory. This means builds are not consistently repeatable across systems, and lead me to believe I had a valid build, when in fact I did not. * Manifest-first build produces incomplete POMs The POM created by the manifest-first build format does not contain the dependency chain, leading a downstream consumer to not import the runtime dependencies necessary to execute the bundle it has imported. In JGit's case, this means JSch isn't included in our dependency chain. * Manifest-first build produces POMs unreadable by Maven 2.x JGit has existing application consumers who are relying on Maven 2.x builds. Forcing them to step up to an alpha release of Maven 3 is simply unacceptable. * OSGi bundle export data management is tedious Editing each of our pom.xml files to mark a new release is difficult enough as it is. Editing every MANIFEST.MF file to list our exported packages and their current version number is something a machine should do, not a human. Yet the Tycho OSGi way unfortunately demands that a human do this work. * OSGi bundle import data management is tedious There isn't a way in the MANIFEST.MF file format to reuse the same version tags across all of our imports, but we want to have a consistent view of our dependencies when we compile JGit. After wasting more than 2 full days trying to get Tycho to work, I've decided its a lost cause right now. We need to be chasing down bugs and critical features, not trying to bridge the gap between the stable Maven repository format and the undocumented P2 format used only by Eclipse. So, switch the build to use Apache Felix's maven-bundle-plugin. This is the same plugin Jetty uses to produce their OSGi bundle manifests, and is the same plugin used by the Apache Felix project, which is an open-source OSGi runtime. It has a reasonable number of folks using it for production builds, and is running on top of the stable Maven 2.x code base. With this switch we get automatically generated MANIFEST.MF files based on reasonably sane default rules, which reduces the amount of things we have to maintain by hand. When necessary, we can add a few lines of XML to our POMs to tweak the output. Our build artifacts are still fully compatible with Maven 2.x, so any downstream consumers are still able to use our build products, without stepping up to Maven 3.x. Our artifacts are also valid as OSGi bundles, provided they are organized on disk into a repository that the runtime can read. With maven-bundle-plugin the build runs offline, as much as Maven 2.x is able to run offline anyway, so we're able to return to a distributed development environment again. By generating MANIFEST.MF at the top level of each project (and therefore outside of the target directory), we're still compatible with Eclipse's PDE tooling. Our projects can be imported as standard Maven projects using the m2eclipse plugin, but the PDE will think they are vaild plugins and make them available for plugin builds, or while debugging another workbench. This change also completely removes Tycho from the build. Unfortunately, Tycho 0.6.0's pom-first dependency resolver is broken when resolving a pom-first plugin bundle through a manifest-first feature package, so bundle org.eclipse.jgit can't be resolved, even though it might actually exist in the local Maven repository. Rather than fight with Tycho any further, I'm just declaring it plugina-non-grata and ripping it out of the build. Since there are very few tools to build a P2 format repository, and no documentation on how to create one without running the Eclipse UI manually by poking buttons, I'm declaring that we are not going to produce a P2 update site from our automated builds. Change-Id: If7938a86fb0cc8e25099028d832dbd38110b9124 Signed-off-by: Shawn O. Pearce <spearce@spearce.org>	15 years ago
Shawn O. Pearce	6f06be9bc2	tools/version.sh: Update embedded version numbers in build products We can now use `tools/version.sh --release` to update the MANIFEST.MF and Maven POM files with the current version number of this project, so they appear in any build product created. The counterpart --snapshot option be used to reset files to use their natural -SNAPSHOT and .qualifier state during development. We use a simple Bourne shell script with Perl calls because we must edit both Maven pom.xml and OSGi bundle MANIFEST.MF in order to store the correct data for our parallel build systems. In the future we should use a native Java solution which relies upon JGit to compute the `git describe` portion. Until we tag our first official release a "tagged snapshot" can be made by creating an artifical annotated tag first: git tag -a -m "initial contribution" v0.5.1 046198cf5f21e5a63e8ec0ecde2ef3fe21db2eae tools/version.sh --release Resulting in a version string like "0.5.1.50-ge16af83". Change-Id: Ic2bbae75bf96fc8831324c62c2212131277f70e4 Signed-off-by: Shawn O. Pearce <spearce@spearce.org>	15 years ago
Shawn O. Pearce	add24f2a36	Standardize the source code formatter for Eclipse We now supply an exported format description for anyone to import into their own workbench, and all projects reference this style in a consistent way. Change-Id: Ic243544a761ef2db29025a89ba6bb932a3a3ce34 Signed-off-by: Shawn O. Pearce <spearce@spearce.org>	15 years ago
Shawn O. Pearce	baba6a3c28	Utility to graft old JGit history onto repository This script can be executed by a developer to download and graft on the old JGit history, from before we moved the project to the eclipse.org namespace and the Eclipse Foundation servers. Executing this script is only necessary if you need to run log or blame past the migration boundary, and isn't always recommended when it comes to pushing objects to a remote server. As mentioned in the script, it is best to use a specialized repository with this graft, not your main work repository. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>	15 years ago