pm2-hooks

PM2 module to listen webhooks from github, bitbucket, gitlab, jenkins and droneci. When a webhook is received you can run a script, pull your project, restart pm2, etc.

This project is highly inspired by vmarchaud/pm2-githook.

Features (changelog):

• Runs an http server listening for webhooks
• Works on any repository system, as for now it does nothing with the payload received. In the near future I will check the branch or the action, the secret, etc.
• Only runs the command you set
• Run the command in the cwd defined for the app

Wanted features, to be done during Mach/2017:

• Check payload for secret, check common headers on main git repositories (github, bitbucket, gitlab, etc) to know if is a valid call

Possible features, as I need to think about it:

• Auto-restart pm2 app after a successful command run
• Make an automatic git pull on the folder, and make a prePull and postPull available commands (same approach as vmarchaud/pm2-githook)

Install

To install it simply run:

$ pm2 install pm2-hooks

Warning: This library currently (2017 feb 26) is in ALPHA state. This means some things:

• You can help me a lot making a comment/issue/PR
• I will try to publish the last version to npm so you can install it with only pm2 install pm2-hooks. If for some reason the version on npm is outdated you always will be capable of run pm2 install desaroger/pm2-hooks to be sure to install the last version directly from the repository.

Usage

Step 1: Prepare the ecosystem file

By default pm2-hooks doesn't do anything. You need to set the key env_hook inside the config of a given app, inside the ecosystem file.

If env_hook isn't defined or is falsy then is disabled.

Example of an ecosystem file:

{
    apps: [
        {
            name: 'api-1',
            script: 'server.js'
        },
        {
            name: 'api-2',
            script: 'server.js',
            env_hook: {
                command: 'git pull && npm i && npm test && pm2 restart api-2',
                cwd: '/home/desaroger'
            }
        }
    ]
}

Where api-1 has hook disabled and api-2 is enabled and when the hook is called, the command is executed.

Available options:

• command {string} The line you want to execute. Will be executed with NodeJS spawn. (optional, but if not set this is not going to do nothing ¯\(ツ)/¯)
• cwd {string} The cwd to use when running the command. If not set, the one used on your ecosystem app configuration will be used (if set).
• commandOptions {object} The object that we will pass to the NodeJS spawn. Defaults to a blank object, and later we add the cwd.
• type {string} [not implemented yet] The git server you are going to use [github, gitlab, bitbucket, etc].

Step 2: Install

If you didn't install before, install it. If you installed it, then you will need to restart it. For that, run pm2 restart pm2-hooks.

Step 3: Try it

Now you have a server on port 9000 by default. You can make a call to http://localhost:9000/api-2 to see the response.

If everything went fine, you will see:

{
    status: 'success',
    message: 'Route "api-2" was found'
    code: 0
}

And the command had been executed.

Step 4: See the log

Everything will be logged in the pm2 logs. For see them, run:

$ pm2 logs pm2-hooks

And for see the entire log:

$ cat ~/.pm2/logs/pm2-hooks-out-0.log

FAQ

How I can change the port?

You can set the port (where the default port is 9000) setting it in the config of the pm2 module. For doing that, run:

$ pm2 set pm2-hooks:port 3000

How I can uninstall it?

You can uninstall this module running:

$ pm2 uninstall pm2-hooks

Another similar projects

These are some projects I found similar to mine. Please let me know if you know anoher.

• vmarchaud/pm2-githook: From where I was inspired. It works on any repository, pulls the repo when webhook is called and has preHook and postHook commands available.
• oowl/pm2-webhook: Works on any repository. If you want to use the secret, then the webhook must contain the X-Hub-Signature in order to work (I don't know if every git server contains it).

Copyright and license

Copyright 2017 Roger Fos Soler

Licensed under the MIT License.