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var cmd = require('node-cmd');

var path, node_ssh, ssh, fs;

fs = require('fs');

path = require('path');

node_ssh = require('node-ssh');

ssh = new node_ssh();

// the method that starts the deployment process

function main() {

console.log('Deployment started.');

sshConnect();

}

// installs PM2

function installPM2() {

return ssh.execCommand(

'sudo npm install pm2 -g', {

cwd: '/home/ubuntu'

});

}

// transfers local project to the remote server

function transferProjectToRemote(failed, successful) {

return ssh.putDirectory(

'../starter-node-angular',

'/home/ubuntu/starter-node-angular-temp',

{

recursive: true,

concurrency: 1,

validate: function(itemPath) {

const baseName = path.basename(itemPath);

return (

baseName.substr(0, 1) !== '.' && baseName !== 'node_modules' // do not allow dot files

); // do not allow node_modules

},

tick: function(localPath, remotePath, error) {

if (error) {

failed.push(localPath);

console.log('failed.push: ' + localPath);

} else {

successful.push(localPath);

console.log('successful.push: ' + localPath);

}

}

}

);

}

// creates a temporary folder on the remote server

function createRemoteTempFolder() {

return ssh.execCommand(

'rm -rf starter-node-angular-temp && mkdir starter-node-angular-temp', {

cwd: '/home/ubuntu'

});

}

// stops mongodb and node services on the remote server

function stopRemoteServices() {

return ssh.execCommand(

'pm2 stop all && sudo service mongod stop', {

cwd: '/home/ubuntu'

});

}

// updates the project source on the server

function updateRemoteApp() {

return ssh.execCommand(

'mkdir starter-node-angular && cp -r starter-node-angular-temp/* starter-node-angular/ && rm -rf starter-node-angular-temp', {

cwd: '/home/ubuntu'

});

}

// restart mongodb and node services on the remote server

function restartRemoteServices() {

return ssh.execCommand(

'cd starter-node-angular && sudo service mongod start && pm2 start app.js', {

cwd: '/home/ubuntu'

});

}

// connect to the remote server

function sshConnect() {

console.log('Connecting to the server...');

ssh

.connect({

// TODO: ADD YOUR IP ADDRESS BELOW (e.g. '12.34.5.67')

host: '35.175.246.50',

username: 'ubuntu',

privateKey: 'final-key.pem'

})

.then(function() {

console.log('SSH Connection established.');

console.log('Installing PM2...');

return installPM2();

})

.then(function() {

console.log('Creating `starter-node-angular-temp` folder.');

return createRemoteTempFolder();

})

.then(function(result) {

const failed = [];

const successful = [];

if (result.stdout) {

console.log('STDOUT: ' + result.stdout);

}

if (result.stderr) {

console.log('STDERR: ' + result.stderr);

return Promise.reject(result.stderr);

}

console.log('Transferring files to remote server...');

return transferProjectToRemote(failed, successful);

})

.then(function(status) {

if (status) {

console.log('Stopping remote services.');

return stopRemoteServices();

} else {

return Promise.reject(failed.join(', '));

}

})

.then(function(status) {

if (status) {

console.log('Updating remote app.');

return updateRemoteApp();

} else {

return Promise.reject(failed.join(', '));

}

})

.then(function(status) {

if (status) {

console.log('Restarting remote services...');

return restartRemoteServices();

} else {

return Promise.reject(failed.join(', '));

}

})

.then(function() {

console.log('DEPLOYMENT COMPLETE!');

process.exit(0);

})

.catch(e => {

console.error(e);

process.exit(1);

});

}

main();