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New Feature
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Resolution: Fixed
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Major
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None
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Platform: All, OS: All
If you have a build which needs to access multiple Hg repos at once, the normal
way to set this up is to use the Forest extension. OpenJDK uses this to group
together the different major components of the JDK, and NetBeans will probably
use this to specify a preferred location for contrib modules to be overlaid on
top of the main repository.
Hudson however supports only a single repository. If you wanted to set up such a
build with Hudson, you would only be able to configure the topmost repository
from the forest in Hudson. While you could include steps in the build script to
pull changes from nested repositories (cloning them if not already present),
these changes would not appear in the changelog, making it far harder to
diagnose build failures, and changes in a subtree would not trigger a build when
using polling.
Hudson should rather permit you to click a checkbox to use the Forest extension
(which would need to be installed and enabled in the local copy of Hg). In this
mode, fclone and fpull would replace clone and pull. The changelog creation
would need to call ftrees to get a list of trees (or search for them directly in
Java) and then log each one separately, and polling would need to check all the
trees separately.
While there could be more elaborate configuration options to retrieve only
specified trees from particular locations into specific subdirectories, I am
guessing that just enabling forest operations - where all the subtrees are
automatically detected in a fixed configuration from the same server - would
suffice for most sites, and add very little weight to the configuration GUI.
- depends on
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JENKINS-4839 Fix changelogs when using Forest
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- Resolved
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- Closed
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- Open
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- Resolved
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JENKINS-4843 Tests for Forest support
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- Closed
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JENKINS-4846 Install Forest extension on demand
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- Closed
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- is duplicated by
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- Closed
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[JENKINS-1143] Support Mercurial forests
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- Issue 1344 has been marked as a duplicate of this issue. ***
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While taking to the JavaFX team, they said they run a patched version of the
mercurial plugin that supports forest, but they might have lost the source code.
I'm trying to encourage Kelly to look into this 
Code changed in hudson
User: : jglick
Path:
trunk/hudson/plugins/mercurial/src/main/java/hudson/plugins/mercurial/MercurialSCM.java
trunk/hudson/plugins/mercurial/src/main/resources/hudson/plugins/mercurial/MercurialSCM/config.jelly
trunk/hudson/plugins/mercurial/src/main/webapp/forest.html
trunk/hudson/plugins/mercurial/src/test/java/hudson/plugins/mercurial/MercurialSCMTest.java
http://fisheye4.cenqua.com/changelog/hudson/?cs=23686
Log:
[FIXED JENKINS-1143] Elementary support for Forest extension.
Patch supplied by Aleksey Voytilov, with corrections:
1. When !forest, just 'hg pull hg.bundle' (there is no --bundle option).
2. When forest, add '-r $branch' to 'hg fpull'.
Code changed in hudson
User: : jglick
Path:
http://fisheye4.cenqua.com/changelog/hudson/?cs=23687
Log:
JENKINS-1143 Deleted as this functionality is now an option in the main Mercurial plugin.
Code changed in hudson
User: : jglick
Path:
trunk/hudson/plugins/mercurial/src/main/resources/hudson/plugins/mercurial/MercurialSCM/config.jelly
http://fisheye4.cenqua.com/changelog/hudson/?cs=23688
Log:
JENKINS-1143 Marking Forest support experimental for now.
Code changed in jenkins
User: Jesse Glick
Path:
src/main/java/hudson/plugins/mercurial/MercurialInstallation.java
src/main/java/hudson/plugins/mercurial/MercurialSCM.java
src/main/resources/hudson/plugins/mercurial/MercurialInstallation/config.jelly
src/main/resources/hudson/plugins/mercurial/MercurialInstallation/help-downloadForest.html
src/main/resources/hudson/plugins/mercurial/MercurialInstallation/help-useCaches.html
src/main/resources/hudson/plugins/mercurial/MercurialInstallation/help-useSharing.html
src/main/resources/hudson/plugins/mercurial/MercurialSCM/config.jelly
src/main/resources/hudson/plugins/mercurial/MercurialSCM/help-forest.html
src/main/resources/index.jelly
src/test/java/hudson/plugins/mercurial/CachingSCMTest.java
src/test/java/hudson/plugins/mercurial/DebugFlagTest.java
src/test/java/hudson/plugins/mercurial/ForestTest.java
src/test/java/hudson/plugins/mercurial/MercurialSCMTest.java
src/test/java/hudson/plugins/mercurial/SharingSCMTest.java
src/test/java/hudson/plugins/mercurial/SwitchingSCMTest.java
src/test/resources/hudson/plugins/mercurial/forest.py
http://jenkins-ci.org/commit/mercurial-plugin/e314ee81211e01dab2f5bc4329b3e8f7667e2bc5
Log:
JENKINS-1143 Dropping support for Forest extension.
The extension itself has long been deprecated;
an unofficial fork for compatibility with newer Mercurials has not been updated in a year.
The plugin integration was incomplete, rarely tested,
and complicated implementation of other features.
Anyway the new Multiple SCMs Plugin seems to do just as well for the same use cases.
Integrated in 
plugins_mercurial #62
JENKINS-1143 Dropping support for Forest extension.
Jesse Glick :
Files :
- src/main/resources/hudson/plugins/mercurial/MercurialSCM/help-forest.html
- src/test/java/hudson/plugins/mercurial/SharingSCMTest.java
- src/test/resources/hudson/plugins/mercurial/forest.py
- src/test/java/hudson/plugins/mercurial/CachingSCMTest.java
- src/test/java/hudson/plugins/mercurial/MercurialSCMTest.java
- src/main/resources/hudson/plugins/mercurial/MercurialInstallation/config.jelly
- src/test/java/hudson/plugins/mercurial/DebugFlagTest.java
- src/main/resources/index.jelly
- src/test/java/hudson/plugins/mercurial/ForestTest.java
- src/test/java/hudson/plugins/mercurial/SwitchingSCMTest.java
- src/main/resources/hudson/plugins/mercurial/MercurialInstallation/help-useSharing.html
- src/main/resources/hudson/plugins/mercurial/MercurialSCM/config.jelly
- src/main/resources/hudson/plugins/mercurial/MercurialInstallation/help-useCaches.html
- src/main/java/hudson/plugins/mercurial/MercurialSCM.java
- src/main/java/hudson/plugins/mercurial/MercurialInstallation.java
- src/main/resources/hudson/plugins/mercurial/MercurialInstallation/help-downloadForest.html
Forest extension was mandatory for OpenJDK 7 and 8 builds and dropping support was a very bad discovery for me this morning ;(
OpenJDK may be the only project still using this extension, so it did not seem worth complicating the plugin code and inhibiting other work to support a small minority of users. Workarounds:
1. Stay with an earlier version of the plugin.
2. Just configure the root repository in the plugin, and add fpull -u as a build step to the job. No changelog/polling support in this case.
3. Recommended: use the Multiple SCMs Plugin.