Cedaro Blog: Deploying packages with Shipit.js

package.json

{
  "name": "project-name",
  "version": "1.0.0",
  "devDependencies": {
    "moment": "^2.10.3",
    "shipit-cli": "^1.2.1"
  }
}

shipitfile.js

var moment = require( 'moment' ),
	package = require( __dirname + '/package.json' ),
	path = require( 'path' );

module.exports = function ( shipit ) {
	shipit.initConfig({
		staging: {
			servers: 'staging.example.com',
			deployRoot: '/srv/www/staging.example.com/deploy/themes/',
			publicPath: '/srv/www/staging.example.com/public/wp-content/themes/'
		}
	});

	shipit.task( 'deploy', function() {
		shipit.archiveFile = package.name + '-' + package.version + '.zip';
		shipit.deployPath = shipit.config.deployRoot + package.name + '/releases/';

		return createDeploymentPath()
			.then( copyProject )
			.then( unpackDeployment )
			.then( updateSymlink )
			.then( cleanOldReleases );
	});

	function createDeploymentPath() {
		return shipit.remote( 'mkdir -p ' + shipit.deployPath );
	}

	function copyProject() {
		return shipit.remoteCopy( 'dist/' + shipit.archiveFile, shipit.deployPath );
	}

	function unpackDeployment() {
		var cmd = [];

		shipit.deployTime = moment().utc().format( 'YYYYMMDDHHmmss' );

		cmd.push( 'cd ' + shipit.deployPath );
		cmd.push( 'unzip -q ' + shipit.archiveFile );
		cmd.push( 'mv ' + package.name + ' ' + shipit.deployTime );
		cmd.push( 'rm ' + shipit.archiveFile );

		return shipit.remote( cmd.join( ' && ' ) );
	}

	function updateSymlink() {
		var cmd = [];

		cmd.push( 'cd ' + shipit.config.publicPath );
		cmd.push( 'ln -sn ' + shipit.deployPath + shipit.deployTime + ' ' + package.name + '-temp' );
		cmd.push( 'mv -T ' + package.name + '-temp ' + package.name );

		return shipit.remote( cmd.join( ' && ' ) );
	}

	function cleanOldReleases() {
		var cmd = '';

		cmd += '(';
			cmd += 'ls -rd ' + shipit.deployPath + '*|head -n 5;';
			cmd += 'ls -d ' + shipit.deployPath + '*';
		cmd += ')';
		cmd += '|sort|uniq -u|xargs rm -rf';

		return shipit.remote( cmd );
	}
};