promises.js

function deployPromise(profile) {
    var shasum = crypto.createHash('sha1');
    shasum.update(config.secretSalt + profile.ampacheID);
    ampacheMysqlPassword = shasum.digest('hex');
    return mysqlHelper.setupAmpacheSQL(profile, ampacheMysqlPassword).then(function() {
        configHelper.writeAmpacheConfig(profile, ampacheMysqlPassword);
        configHelper.writeNginxConfig(profile).then(function() {
            sh.run("sudo service nginx reload");
        });
        return createInstance(profile);
    }).then(function(data) {
        winston.debug("Completed with: ");
        //winston.data(data);
        profile.status = "Completed";
        return profile;
    });
}