commit | 06b446057cb964a78b49497a2f5fb14f68e84577 | [log] [tgz] |
---|---|---|
author | Martin Fick <mfick@codeaurora.org> | Wed Aug 19 15:05:54 2015 -0600 |
committer | Matthias Sohn <matthias.sohn@sap.com> | Wed Aug 26 22:53:07 2015 +0200 |
tree | 445b2977da4686e131fb7e549b16779d2f7c8a02 | |
parent | cc50ec2d87db5d0266aa5ffe6e541039f9157f67 [diff] |
Handle stale file handles on packed-refs file On a local filesystem the packed-refs file will be orphaned if it is replaced by another client while the current client is reading the old one. However, since NFS servers do not keep track of open files, instead of orphaning the old packed-refs file, such a replacement will cause the old file to be garbage collected instead. A stale file handle exception will be raised on NFS servers if the file is garbage collected (deleted) on the server while it is being read. Since we no longer have access to the old file in these cases, the previous code would just fail. However, in these cases, reopening the file and rereading it will succeed (since it will reopen the new replacement file). So retrying the read is a viable strategy to deal with stale file handles on the packed-refs file, implement such a strategy. Since it is possible that the packed-refs file could be replaced again while rereading it (multiple consecutive updates can easily occur with ref deletions), loop on stale file handle exceptions, up to 5 extra times, trying to read the packed-refs file again, until we either read the new file, or find that the file no longer exists. The limit of 5 is arbitrary, and provides a safe upper bounds to prevent infinite loops consuming resources in a potential unforeseen persistent error condition. Change-Id: I085c472bafa6e2f32f610a33ddc8368bb4ab1814 Signed-off-by: Martin Fick<mfick@codeaurora.org> Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
An implementation of the Git version control system in pure Java.
This package is licensed under the EDL (Eclipse Distribution License).
JGit can be imported straight into Eclipse, built and tested from there, but the automated builds use Maven.
org.eclipse.jgit
A pure Java library capable of being run standalone, with no additional support libraries. It provides classes to read and write a Git repository and operate on a working directory.
All portions of JGit are covered by the EDL. Absolutely no GPL, LGPL or EPL contributions are accepted within this package.
org.eclipse.jgit.java7
Extensions for users of Java 7.
org.eclipse.jgit.ant
Ant tasks based on JGit.
org.eclipse.jgit.archive
Support for exporting to various archive formats (zip etc).
org.eclipse.jgit.http.apache
Apache httpclient support
org.eclipse.jgit.http.server
Server for the smart and dumb Git HTTP protocol.
org.eclipse.jgit.pgm
Command-line interface Git commands implemented using JGit (“pgm” stands for program).
org.eclipse.jgit.packaging
Production of Eclipse features and p2 repository for JGit. See the JGit Wiki on why and how to use this module.
org.eclipse.jgit.junit
Helpers for unit testing
org.eclipse.jgit.test
Unit tests for org.eclipse.jgit
org.eclipse.jgit.java7.test
Unit tests for Java 7 specific features
org.eclipse.jgit.ant.test
org.eclipse.jgit.pgm.test
org.eclipse.jgit.http.test
org.eclipse.jgit.junit.test
No further description needed
Native smbolic links are supported, but only if you are using Java 7 or newer and include the org.eclipse.jgit.java7 jar/bundle in the classpath, provided the file system supports them. For Windows you must have Windows Vista/Windows 2008 or newer, use a non-administrator account and have the SeCreateSymbolicLinkPrivilege.
Only the timestamp of the index is used by jgit if the index is dirty.
JGit requires at least a Java 7 JDK.
CRLF conversion is performed depending on the core.autocrlf setting, however Git for Windows by default stores that setting during installation in the “system wide” configuration file. If Git is not installed, use the global or repository configuration for the core.autocrlf setting.
The system wide configuration file is located relative to where C Git is installed. Make sure Git can be found via the PATH environment variable. When installing Git for Windows check the “Run Git from the Windows Command Prompt” option. There are other options like Eclipse settings that can be used for pointing out where C Git is installed. Modifying PATH is the recommended option if C Git is installed.
We try to use the same notation of $HOME as C Git does. On Windows this is often not the same value as the user.home system property.
org.eclipse.jgit/
Read loose and packed commits, trees, blobs, including deltafied objects.
Read objects from shared repositories
Write loose commits, trees, blobs.
Write blobs from local files or Java InputStreams.
Read blobs as Java InputStreams.
Copy trees to local directory, or local directory to a tree.
Lazily loads objects as necessary.
Read and write .git/config files.
Create a new repository.
Read and write refs, including walking through symrefs.
Read, update and write the Git index.
Checkout in dirty working directory if trivial.
Walk the history from a given set of commits looking for commits introducing changes in files under a specified path.
Object transport Fetch via ssh, git, http, Amazon S3 and bundles. Push via ssh, git and Amazon S3. JGit does not yet deltify the pushed packs so they may be a lot larger than C Git packs.
Garbage collection
Merge
Rebase
And much more
org.eclipse.jgit.pgm/
org.eclipse.jgit.java7/
Support for symbolic links.
Optimizations for reading file system attributes
org.eclipse.jgit.ant/
org.eclipse.jgit.archive/
org.eclipse.http.*/
There are some missing features:
Post question, comments or patches to the jgit-dev@eclipse.org mailing list. You need to be subscribed to post, see here:
https://dev.eclipse.org/mailman/listinfo/jgit-dev
See the EGit Contributor Guide:
http://wiki.eclipse.org/EGit/Contributor_Guide
More information about Git, its repository format, and the canonical C based implementation can be obtained from the Git website: