index.js

'use strict';

const fs = require('fs');
const path = require('path');
const template = require('lodash.template');

const cli = require('ghost-cli');
const getUid = require('./get-uid');

class SupervisorExtension extends cli.Extension {
	setup(cmd, argv) {
		const instance = this.system.getInstance();

		if (!argv.local && instance.config.get('process') === 'supervisor') {
			cmd.addStage('supervisor', this._setup.bind(this), [], 'Supervisor');
		}
	}

	async _setup(argv, ctx, task) {
		const uid = getUid(ctx.instance.dir);

		if (!uid) {
			this.ui.log('The "ghost" user has not been created, please run `ghost setup linux-user` first', 'yellow');
			return task.skip();
		}

		const fileBaseName = `${ctx.instance.name}`;

		if (fs.existsSync(path.join('/etc/supervisor/conf.d', `${fileBaseName}.conf`))) {
			this.ui.log('Supervisor has already been set up. Skipping Supervisor setup');
			return task.skip();
		}

		const service = template(fs.readFileSync(path.join(__dirname, 'ghost.supervisor.template'), 'utf8'));
		const contents = service({
			name: fileBaseName,
			dir: process.cwd(),
			user: 'ghost',
			environment: this.system.environment,
			// eslint-disable-next-line camelcase
			ghost_exec_path: process.argv.slice(0, 2).join(' ')
		});

		await this.template(ctx.instance, contents, 'supervisor config', `${fileBaseName}.conf`, '/etc/supervisor/conf.d');
		await this.ui.sudo('supervisorctl update');
	}

	uninstall(instance) {
		const serviceFilename = `/etc/supervisor/conf.d/${instance.name}.conf`;

		if (fs.existsSync(serviceFilename)) {
			return this.ui.sudo(`rm ${serviceFilename}`).catch(
				() => Promise.reject(new cli.errors.SystemError('Supervisor config file link could not be removed, you will need to do this manually.'))
			);
		}

		return Promise.resolve();
	}
}

module.exports = SupervisorExtension;