# Changes between Version 1 and Version 2 of TracRepositoryAdmin

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Aug 20, 2013 9:17:42 PM (6 years ago)
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 v1 * Set up a call to trac-admin $ENV changeset added$REPO $REV in the post-commit hook of each repository. Additionally, add a call to trac-admin$ENV changeset modified $REPO$REV in the post-revprop-change hook of repositories allowing revision property changes. * Set the [trac] repository_sync_per_request option to an empty value to disable per-request syncing. * Make sure the user under which your Subversion hooks are run has write access to the Trac environment, or use a tool like sudo to temporarily elevate privileges. == Specifying repositories == #Repositories ||The dir attribute specifies the location of the repository in the filesystem. It corresponds to the value previously specified in the option [trac] repository_dir. The alias and dir attributes are mutually exclusive. || ||hidden ||When set to true, the repository is hidden from the repository index page in the source browser. Browsing the repository is still possible, and links referencing the repository remain valid. || ||name ||The name attribute specifies the leading path element to the repository. || ||type ||The type attribute sets the type of version control system used by the repository. Trac supports Subversion out-of-the-box, and plugins add support for many other systems. If type is not specified, it defaults to the value of the [trac] repository_type option. || ||type ||The type attribute sets the type of version control system used by the repository. Trac supports Subversion and Git out-of-the-box, and plugins add support for many other systems. If type is not specified, it defaults to the value of the [trac] repository_type option. || ||url ||The url attribute specifies the root URL to be used for checking out from the repository. When specified, a "Repository URL" link is added to the context navigation links in the source browser, that can be copied into the tool used for creating the working copy. || The name attribute and one of alias or dir are mandatory. All others are optional. A repository name and one of alias or dir attributes are mandatory. All others are optional. After adding a repository, the cache for that repository must be re-synchronized once with the trac-admin $ENV repository resync command. The main advantage of specifying repositories in trac.ini is that they can be inherited from a global configuration (see the [wiki:TracIni#GlobalConfiguration global configuration] section of TracIni). One drawback is that, due to limitations in the ConfigParser class used to parse trac.ini, the repository name is always all-lowercase. The following example defines two Subversion repositories named project and lib, and a hidden alias to project as the default repository. This is a typical use case where a Trac environment previously had a single repository (the project repository), and was converted to multiple repositories. The alias ensures that links predating the change continue to resolve to the project repository. The following example defines two Subversion repositories named project and lib, and an alias to project as the default repository. This is a typical use case where a Trac environment previously had a single repository (the project repository), and was converted to multiple repositories. The alias ensures that links predating the change continue to resolve to the project repository. {{{ #!ini project.type = svn project.url = http://example.com/svn/project project.hidden = true lib.dir = /var/repos/lib lib.description = This is the secondary library code. lib.type = svn lib.url = http://example.com/svn/lib .alias = project .hidden = true }}} Note that name.alias = target makes name an alias for the target repo, not the other way around. There is also new functionality in the form of a repository listener extension point ''(IRepositoryChangeListener)'' that is triggered by the post-commit hook when a changeset is added or modified, and can be used by plugins to perform actions on commit. === Mercurial Repositories === Please note that at the time of writing, no initial resynchronization or any hooks are necessary for Mercurial repositories - see [trac:#9485] for more information. === Explicit synchronization === #ExplicitSync This is the preferred method of repository synchronization. It requires setting the [trac] repository_sync_per_request option in [wiki:TracIni#trac-section trac.ini] to an empty value, and adding a call to trac-admin in the post-commit hook of each repository. Additionally, if a repository allows changing revision metadata, a call to trac-admin must be added to the post-revprop-change hook as well. The  argument can be either a repository name (use "(default)" for the default repository) or the path to the repository. Note that you may have to set the environment variable PYTHON_EGG_CACHE to the same value as was used for the web server configuration before calling trac-admin, if you changed it from its default location. See [wiki:TracPlugins Trac Plugins] for more information. The following examples are complete post-commit and post-revprop-change scripts for Subversion. They should be edited for the specific environment, marked executable (where applicable) and placed in the hooks directory of each repository. On Unix (post-commit): {{{ #!sh {{{#!sh #!/bin/sh export PYTHON_EGG_CACHE="/path/to/dir" /usr/bin/trac-admin /path/to/env changeset added "$1" "$2" }}} Note: Ubuntu doesn't seem to like /usr/bin/trac-admin, so just use: {{{#!sh #!/bin/sh export PYTHON_EGG_CACHE="/path/to/dir" trac-admin /path/to/env/ changeset added "$1" "$2" }}} On Windows (post-commit.cmd): {{{ #!application/x-dos-batch {{{#!application/x-dos-batch @C:\Python26\Scripts\trac-admin.exe C:\path\to\env changeset added "%1" "%2" }}} The post-revprop-change hook for Subversion is very similar. On Unix (post-revprop-change): {{{ #!sh {{{#!sh #!/bin/sh export PYTHON_EGG_CACHE="/path/to/dir" /usr/bin/trac-admin /path/to/env changeset modified "$1" "$2" }}} On Windows (post-revprop-change.cmd): {{{ #!application/x-dos-batch {{{#!application/x-dos-batch @C:\Python26\Scripts\trac-admin.exe C:\path\to\env changeset modified "%1" "%2" }}} The Unix variants above assume that the user running the Subversion commit has write access to the Trac environment, which is the case in the standard configuration where both the repository and Trac are served by the web server. If you access the repository through another means, for example svn+ssh://, you may have to run trac-admin with different privileges, for example by using sudo. Note that calling trac-admin in your Subversion hooks can slow down the commit and log editing operations on the client side. You might want to use the [trac:source:trunk/contrib/trac-svn-hook contrib/trac-svn-hook] script which starts trac-admin in an asynchronous way. The script also comes with a number of safety checks and usage advices which should make it easier to set up and test your hooks. There's no equivalent trac-svn-hook.bat for Windows yet, but the script can be run by Cygwin's bash. See the [http://svnbook.red-bean.com/en/1.5/svn.reposadmin.create.html#svn.reposadmin.create.hooks section about hooks] in the Subversion book for more information. Other repository types will require different hook setups. Please see the plugin documentation for specific instructions. See the [http://svnbook.red-bean.com/en/1.5/svn.reposadmin.create.html#svn.reposadmin.create.hooks section about hooks] in the Subversion book for more information. Other repository types will require different hook setups. Git hooks can be used in the same way for explicit syncing of git repositories. Add the following to .git/hooks/post-commit: {{{#!sh REV=$(git rev-parse HEAD) trac-admin /path/to/env changeset added \$REV }}} For Mercurial, add the following entries to the .hgrc file of each repository accessed by Trac (if [trac:TracMercurial] is installed in a Trac plugins directory, download [trac:source:mercurial-plugin/tracext/hg/hooks.py hooks.py] and place it somewhere accessible): {{{#!ini [hooks] ; If mercurial-plugin is installed globally commit = python:tracext.hg.hooks.add_changesets changegroup = python:tracext.hg.hooks.add_changesets ; If mercurial-plugin is installed in a Trac plugins directory commit = python:/path/to/hooks.py:add_changesets changegroup = python:/path/to/hooks.py:add_changesets [trac] env = /path/to/env trac-admin = /path/to/trac-admin }}} === Per-request synchronization === #PerRequestSync == Migration from a single-repository setup == #Migration The following procedure illustrates a typical migration from a single-repository setup to multiple repositories. == Migration from a single-repository setup (Subversion) == #Migration The following procedure illustrates a typical migration from a Subversion single-repository setup to multiple repositories. 1. Remove the default repository specification from the [trac] repository_dir option. 1. Add the "main" repository as a named repository. 1. Add the main repository as a named repository. 1. Re-synchronize the main repository. 1. Set up post-commit and post-revprop-change hooks on the main repository, and set [trac] repository_sync_per_request to an empty value. 1. Add a hidden alias to the main repository as the default repository. This ensures that all links predating the migration still resolve to the main repository. 1. Repeat steps 2, 3 and 4 to add other (named) repositories as needed. 1. Set up post-commit and post-revprop-change hooks on the "main" repository, and set [trac] repository_sync_per_request to an empty value. 1. Add an alias to the main repository as the default repository (by leaving out the the name, e.g. .alias = main). This ensures that all links predating the migration still resolve to the main repository. 1. Repeat steps 2, 3 and 4 to add other "named" repositories as needed. == Migration from a single-repository setup (Mercurial) == #MigrationMercurial The following procedure illustrates a typical migration from a Mercurial single-repository setup to multiple repositories. Please note that at the time of writing, no initial resynchronization or any hooks are necessary for Mercurial repositories - see [trac:ticket:9485 #9485] for more information. 1. Upgrade to the latest version of the TracMercurial plugin. 1. Remove the default repository specification from the [trac] repository_dir option. 1. Add the main repository as a named repository. 1. Add an alias to the main repository as the default repository (by leaving out the the name, e.g. .alias = main). This ensures that all links predating the migration still resolve to the main repository. 1. Repeat step 3 to add other "named" repositories as needed. == Troubleshooting ==