Changes between Version 2 and Version 3 of TracRepositoryAdmin


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Timestamp:
03/07/18 16:17:30 (21 months ago)
Author:
trac
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  • TracRepositoryAdmin

    v2 v3  
    1 = Repository Administration =
     1= Repository Administration
    22[[PageOutline(2-3)]]
    33
    4 == Quick start == #QuickStart
     4== Quick start #QuickStart
    55
    66 * Manage repositories in the "Repository" admin panel, with `trac-admin` or in the `[repositories]` section of [wiki:TracIni#repositories-section trac.ini].
    77 * 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.
    88 * Set the `[trac] repository_sync_per_request` option to an empty value to disable per-request syncing.
    9 
    10 
    11 == Specifying repositories == #Repositories
     9 * 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.
     10
     11== Specifying repositories #Repositories
    1212Starting with 0.12, Trac can handle more than one repository per environment. The pre-0.12 way of specifying the repository with the `repository_dir` and `repository_type` options in the `[trac]` section of [wiki:TracIni trac.ini] is still supported, but two new mechanisms allow including additional repositories into an environment.
    1313
     
    2424||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. ||
    2525||`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. ||
    26 ||`name` ||The `name` attribute specifies the leading path element to the repository. ||
    27 ||`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. ||
     26||`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. ||
    2827||`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. ||
    2928
    30 The `name` attribute and one of `alias` or `dir` are mandatory. All others are optional.
     29A repository `name` and one of `alias` or `dir` attributes are mandatory. All others are optional.
    3130
    3231After adding a repository, the cache for that repository must be re-synchronized once with the `trac-admin $ENV repository resync` command.
     
    3635
    3736
    38 === In `trac.ini` === #ReposTracIni
     37=== In `trac.ini` #ReposTracIni
    3938Repositories and repository attributes can be specified in the `[repositories]` section of [wiki:TracIni#repositories-section trac.ini]. Every attribute consists of a key structured as `{name}.{attribute}` and the corresponding value separated with an equal sign (`=`). The name of the default repository is empty.
    4039
    4140The 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.
    4241
    43 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.
    44 {{{
    45 #!ini
     42The 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.
     43{{{#!ini
    4644[repositories]
    4745project.dir = /var/repos/project
     
    4947project.type = svn
    5048project.url = http://example.com/svn/project
     49project.hidden = true
     50
    5151lib.dir = /var/repos/lib
    5252lib.description = This is the secondary library code.
    5353lib.type = svn
    5454lib.url = http://example.com/svn/lib
     55
    5556.alias = project
    56 .hidden = true
    5757}}}
    5858Note that `name.alias = target` makes `name` an alias for the `target` repo, not the other way around.
    5959
    60 === In the database === #ReposDatabase
     60=== In the database #ReposDatabase
    6161Repositories can also be specified in the database, using either the "Repositories" admin panel under "Version Control", or the `trac-admin $ENV repository` commands.
    6262
     
    7979Note that the default repository has an empty name, so it will likely need to be quoted when running `trac-admin` from a shell. Alternatively, the name "`(default)`" can be used instead, for example when running `trac-admin` in interactive mode.
    8080
    81 
    82 == Repository synchronization == #Synchronization
     81== Repository caching
     82
     83The Subversion and Git repository connectors support caching, which improves the performance browsing the repository, viewing logs and viewing changesets. Cached repositories must be [#Synchronization synchronized]; either explicit or implicit synchronization can be used. When searching changesets, only cached repositories are searched.
     84
     85Subversion repositories are cached unless the type is `direct-svnfs`. Git repositories are cached when `[git]` [wiki:TracIni#git-section cached_repository] is `true`.
     86
     87== Repository synchronization #Synchronization
    8388Prior to 0.12, Trac synchronized its cache with the repository on every HTTP request. This approach is not very efficient and not practical anymore with multiple repositories. For this reason, explicit synchronization through post-commit hooks was added.
    8489
    8590There 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.
    8691
    87 === Explicit synchronization === #ExplicitSync
    88 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.
     92=== Mercurial Repositories
     93Please note that at the time of writing, no initial resynchronization or any hooks are necessary for Mercurial repositories - see [trac:#9485] for more information.
     94
     95=== Explicit synchronization #ExplicitSync
     96This 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.
    8997
    9098 `changeset added <repos> <rev> [...]`::
     
    96104The `<repos>` argument can be either a repository name (use "`(default)`" for the default repository) or the path to the repository.
    97105
     106Note 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.
     107
     108==== Subversion
     109
    98110The 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`):
    99 {{{
    100 #!sh
     111{{{#!sh
    101112#!/bin/sh
     113export PYTHON_EGG_CACHE="/path/to/dir"
    102114/usr/bin/trac-admin /path/to/env changeset added "$1" "$2"
    103115}}}
     116Note: Check with `whereis trac-admin`, whether `trac-admin` is really installed under `/usr/bin/` or maybe under `/usr/local/bin/` and adapt the path.
    104117On Windows (`post-commit.cmd`):
    105 {{{
    106 #!application/x-dos-batch
     118{{{#!bat
    107119@C:\Python26\Scripts\trac-admin.exe C:\path\to\env changeset added "%1" "%2"
    108120}}}
    109121
    110122The post-revprop-change hook for Subversion is very similar. On Unix (`post-revprop-change`):
    111 {{{
    112 #!sh
     123{{{#!sh
    113124#!/bin/sh
     125export PYTHON_EGG_CACHE="/path/to/dir"
    114126/usr/bin/trac-admin /path/to/env changeset modified "$1" "$2"
    115127}}}
    116128On Windows (`post-revprop-change.cmd`):
    117 {{{
    118 #!application/x-dos-batch
     129{{{#!bat
    119130@C:\Python26\Scripts\trac-admin.exe C:\path\to\env changeset modified "%1" "%2"
    120131}}}
    121132
     133The 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`.
     134
    122135Note 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.
    123136
    124 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.
    125 
    126 === Per-request synchronization === #PerRequestSync
     137See 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.
     138
     139==== Git
     140
     141Git hooks can be used in the same way for explicit syncing of Git repositories.  If your git repository is one that gets committed to directly on the machine that hosts trac, add the following to the `hooks/post-commit` file in your git repo (note: this will do nothing if you only update the repo by pushing to it):
     142{{{#!sh
     143#!/bin/sh
     144REV=$(git rev-parse HEAD)
     145trac-admin /path/to/env changeset added <repos> $REV
     146}}}
     147
     148Alternately, if your repository is one that only gets pushed to, add the following to the `hooks/post-receive` file in the repo:
     149{{{#!sh
     150#!/bin/sh
     151tracenv=/path/to/env     # change with your Trac environment's path
     152repos=                   # change with your repository's name
     153while read oldrev newrev refname; do
     154    if [ "$oldrev" = 0000000000000000000000000000000000000000 ]; then
     155        git rev-list --reverse "$newrev" --
     156    else
     157        git rev-list --reverse "$newrev" "^$oldrev" --
     158    fi | xargs trac-admin "$tracenv" changeset added "$repos"
     159done
     160}}}
     161
     162The `<repos>` argument can be either a repository name (use "`(default)`" for the default repository) or the path to the repository.
     163
     164==== Mercurial
     165
     166For 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):
     167{{{#!ini
     168[hooks]
     169; If mercurial-plugin is installed globally
     170commit = python:tracext.hg.hooks.add_changesets
     171changegroup = python:tracext.hg.hooks.add_changesets
     172
     173; If mercurial-plugin is installed in a Trac plugins directory
     174commit = python:/path/to/hooks.py:add_changesets
     175changegroup = python:/path/to/hooks.py:add_changesets
     176
     177[trac]
     178env = /path/to/env
     179trac-admin = /path/to/trac-admin
     180}}}
     181
     182=== Per-request synchronization #PerRequestSync
    127183If the post-commit hooks are not available, the environment can be set up for per-request synchronization. In that case, the `[trac] repository_sync_per_request` option in [wiki:TracIni#trac-section trac.ini] must be set to a comma-separated list of repository names to be synchronized.
    128184
     
    130186
    131187
    132 == Migration from a single-repository setup == #Migration
    133 The following procedure illustrates a typical migration from a single-repository setup to multiple repositories.
     188== Automatic changeset references in tickets
     189
     190You can automatically add a reference to the changeset as a ticket comment whenever changes are committed to the repository. The description of the commit needs to contain one of the following formulas:
     191 * '''`Refs #123`''' - to reference this changeset in `#123` ticket
     192 * '''`Fixes #123`''' - to reference this changeset and close `#123` ticket with the default status ''fixed''
     193
     194This functionality requires installing a post-commit hook as described in [#ExplicitSync], and enabling the optional commit updater components by adding the following line to the `[components]` section of your [wiki:TracIni#components-section trac.ini], or enabling the components in the //Plugins// admin panel.
     195{{{#!ini
     196tracopt.ticket.commit_updater.* = enabled
     197}}}
     198For more information, see the documentation of the `CommitTicketUpdater` component in the //Plugins// admin panel and the [trac:CommitTicketUpdater] page.
     199
     200== Migration from a single-repository setup (Subversion) #Migration
     201The following procedure illustrates a typical migration from a Subversion single-repository setup to multiple repositories.
    134202
    135203 1. Remove the default repository specification from the `[trac] repository_dir` option.
    136  1. Add the "main" repository as a named repository.
     204 1. Add the main repository as a named repository.
    137205 1. Re-synchronize the main repository.
    138  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.
    139  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.
    140  1. Repeat steps 2, 3 and 4 to add other (named) repositories as needed.
    141 
    142 == Troubleshooting ==
    143 
    144 === My trac-post-commit-hook doesn't work anymore === #trac-post-commit-hook
     206 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.
     207 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.
     208 1. Repeat steps 2, 3 and 4 to add other "named" repositories as needed.
     209
     210== Migration from a single-repository setup (Mercurial) #MigrationMercurial
     211The 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.
     212
     213 1. Upgrade to the latest version of the [trac:TracMercurial] plugin.
     214 1. Remove the default repository specification from the `[trac] repository_dir` option.
     215 1. Add the main repository as a named repository.
     216 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.
     217 1. Repeat step 3 to add other "named" repositories as needed.
     218
     219== Troubleshooting
     220
     221=== My trac-post-commit-hook doesn't work anymore #trac-post-commit-hook
    145222
    146223You must now use the optional components from `tracopt.ticket.commit_updater.*`, which you can activate through the Plugins panel in the Administrative part of the web interface, or by directly modifying the [TracIni#components-section "[components]"] section in the trac.ini. Be sure to use [#ExplicitSync explicit synchronization] as explained above.
    147224
     225See [trac:CommitTicketUpdater#Troubleshooting] for more troubleshooting tips.