git-hooks

Git-hooks provides a simple shell framework to manage your git hooks.

This project is quite new and only supports the post-receive git hook, implementing the other hooks could be quickly implemented.

Sample usage session

git-hooks add release-on-tag [0-9]+.[0-9]+.[0-9]+(-.*)? /var/www/packages

Will create a file /var/www/packages/mygitrepos-0.0.1.tar.gz when you'll push a tag 0.0.1 on this repository.

git-hooks add sync-workdir stable www.example.com /var/www/myrepos

Will maintain git repository www.example.com:/var/www/myrepos up to date with stable branch of current repository whenever you'll push change on this branch.

Both of these tags could live on the same repository without problems.

Usage

Before using system wide git-hooks, please set up the general git variable:

git config --system git-hooks.install-dir MY_GIT_HOOKS_BASE_DIR

Once this is done, you are free to run the given previous examples.

Help is provided at each levels:

$ git-hooks
You should provide a sub-command.

This is the list of supported sub-commands:
    git-hooks add HOOK [HOOK-OPTIONS...]
    git-hooks init

$ git-hooks add
You should provide a hook name.

These are the available hooks:
  - release-on-tag
  - sync-workdir
  - update-publish-dir

usage: git-hooks add HOOK [HOOK-OPTIONS...]

Internals

Files and directory

In an existing git repository:

git-hooks init

will setup the necessary files to manage hooks with git-hooks. Please remember that this command is NOT required for any examples to work, as it is executed automatically if not already done by any previous git-hooks command.

Init will create a generic hook file in the .git/hooks/<git-hook-name> files that sets up the framework, and a directory for each hook.

For the moment only the post-receive hook has been implemented. So it creates a .git/hooks/post-receive hook file, which will parse the ~/.git/hooks/post-receive.d/ directory for individual hook, each one in a file.

Adding a hook

Hooks are standalone shell script ending with ".hook" providing some predefined shell function. Hooks are found in the base installation of git-hooks, in the hooks subdirectory. This file provides the control part of the hook.

When calling git-hooks add myhook you'll trigger the install function of your hook, and it's job is to create a "myhook.conf" file. This file configures the behavior of your hook.

post-receive_ref function will be called upon each reference received by git.

post-receive_post function will be called once all ref has been received.

Hooks

These hooks are already written and might give you some hints how to implement a new one.

cascade-push

Synopsis

git-hooks add cascade-push TARGET_BRANCH_REGEX REMOTE

Description

This hook will push selected branch to a specific remote. A branch ref matching the TARGET_BRANCH_REGEX will trigger the command:

git push REMOTE TARGET_BRANCH_REGEX

Options

TARGET_BRANCH_REGEX

Regex to pinpoint the which branch will trigger the hook

REMOTE

Remote alias to which the target branch will be pushed to.

release-on-tag

Synopsis

git-hooks add release-on-tag TARGET_TAG_REGEX HOST DISTANT_REPO_DIR

Description

On tag pushed matching the TARGET_TAG_REGEX, a tar.gz export of the corresponding work tree will be sent via scp to HOST:DISTANT_REPO_DIR repository.

Options

TARGET_TAG_REGEX

Regex to filter tag which will trigger the hook.

HOST

Remote host that will be used for the scp command.

DISTANT_REPO_DIR

Remote directory (on the HOST) that will be used to specify destination location for the scp command.

bzr-push

Synopsis

git-hooks add bzr-push BZR_IDENT TARGET_BRANCH_REGEX BRANCH_NAME_SUBST_REGEX

Description

On branch pushed matching the TARGET_BRANCH_REGEX, it'll be converted and pushed to launchpad on the account identified by BZR_IDENT.

The branch name will be used and transformed thanks to BRANCH_NAME_SUBST_REGEX to create the target launchpad branch name.

Note that you might want to test that you can actually push with the user account that will launch the hook. This might requires some setup to be made.

This hook requires git-bzr-ng to be installed.

This hook is to be considered early-alpha stage.

Options

BZR_IDENT

Launchpad account identifier (can be a team or a user account).

TARGET_BRANCH_REGEX

Regex to filter branch which will trigger the hook.

BRANCH_NAME_SUBST_REGEX

Substitution regex (ie:s%^lp/(.+)$%\1%g) that will be used to get the target bazar branch name from the triggering branch name.

This is quite important as launchpad won't tolerate some characters as /. So you should make sure to remove them.