mythmon / node-git-emit

expose git hooks as a node.js EventEmitter

git-emit

Expose git hooks through an EventEmitter.

This module is super handy when used in conjunction with pushover.

example

reject.js

// randomly reject 50% of commits
var em = require('git-emit')(__dirname + '/repo.git');

em.on('update', function (update) {
    if (Math.random() > 0.5) update.reject()
    else update.accept()
});

Now we can create a new bare repo and run reject.js to listen for commits:

$ git init --bare repo.git
Initialized empty Git repository in /home/substack/projects/node-git-emit/example/repo.git/
$ node reject.js

The first time, our commit is rejected:

$ git push ~/projects/node-git-emit/example/repo.git master
Counting objects: 43, done.
Delta compression using up to 2 threads.
Compressing objects: 100% (36/36), done.
Writing objects: 100% (43/43), 6.15 KiB, done.
Total 43 (delta 18), reused 0 (delta 0)
Unpacking objects: 100% (43/43), done.
remote: error: hook declined to update refs/heads/master
To example/repo.git
 ! [remote rejected] master -> master (hook declined)
error: failed to push some refs to 'example/repo.git'

but the second time, the commit goes through!

$ git push ~/projects/node-git-emit/example/repo.git master
Counting objects: 43, done.
Delta compression using up to 2 threads.
Compressing objects: 100% (36/36), done.
Writing objects: 100% (43/43), 6.15 KiB, done.
Total 43 (delta 18), reused 0 (delta 0)
Unpacking objects: 100% (43/43), done.
To example/repo.git
 * [new branch]      master -> master

It works as expected hooray!

methods

var gitEmit = require('git-emit')

var emitter = gitEmit(repoDir, cb)

Install hooks into repoDir. repoDir should be either a .git directory from an existing or new project or just a bare git directory created with git init --bare.

repoDir should not have any existing hooks unless they were created with git-emit.

Optionally pass in cb(err, emitter) to be notified when the hooks have been installed into repoDir or an error has occured.

emitter.close()

Shut down the dnode listener used internally by git-emit.

events

You can listen for events corresponding to github hooks.

All events receive an update object.

Passive events fire and cannot influence the acceptance of any actions. Calling update.accept() or update.reject() does nothing.

Abortable events MUST respond to the update object with either an update.accept() or an update.reject().

passive events

• post-applypatch
• post-commit
• post-checkout
• post-merge
• post-receive
• post-update
• post-rewrite

abortable events

• applypatch-msg
• pre-applypatch
• pre-commit
• prepare-commit-msg
• commit-msg
• pre-rebase
• pre-receive
• update
• pre-auto-gc

update object

All events are passed an update object as the first argument.

Abortable updates MUST call update.accept() or update.reject().

Since there may be multiple listeners for any update, all listeners must accept() an update for it to be ultimately accepted.

update.accept()

Accept an update.

update.reject()

Reject an update.

update.arguments

The raw arguments provided to the git hook on the command line.

update.lines

An array of lines from process.stdin.

This attribute is only defined for pre-recieve, post-receieve, and post-rewrite hooks.

update.canAbort

Whether the update is abortable.

install

With npm do:

npm install git-emit

license

MIT/X11