whaler/modules/status/index.js

Define and run multi-container applications with Docker

'use strict';

module.exports = exports;
module.exports.__cmd = require('./cmd');

/**
 * @param whaler
 */
async function exports (whaler) {

    whaler.on('status', async ctx => {
        const { default: docker } = await whaler.fetch('docker');

        let app;
        if (ctx.options['app']) {
            app = ctx.options['app'];
        } else {
            const { default: storage } = await whaler.fetch('apps');
            app = await storage.get(ctx.options['name']);
        }

        const services = Object.keys(app.config['data']['services']);

        let containers = await docker.listContainers({
            all: true,
            filters: JSON.stringify({
                name: [
                    docker.util.nameFilter(ctx.options['name'])
                ]
            })
        });

        containers = containers.filter(data => {
            const parts = data['Names'][0].substr(1).split('.');
            return -1 == services.indexOf(parts[0]);
        }).map(data => {
            const labels = data['Labels'] || {};
            const parts = data['Names'][0].substr(1).split('.');
            return Object.assign({
                name: labels['whaler.service'] || parts[0],
                after: null,
                before: null,
            }, JSON.parse(labels['whaler.position'] || '{}'));
        });
        containers.sort((a, b) => {
            if (!a.before || !b.after || a.after == b.name || b.before == a.name) {
                return 1;
            }
            if (!a.after || !b.before || a.before == b.name || b.after == a.name) {
                return -1;
            }
            return 0;
        });

        for (let data of containers) {
            services.push(data.name);
        }

        const response = [];
        for (let name of services) {
            const container = docker.getContainer(name + '.' + ctx.options['name']);

            let ip = null;
            let status = 'NOT CREATED';

            try {
                const info = await container.inspect();
                if (info['State']['Running']) {
                    status = 'ON';
                    ip = info['NetworkSettings']['Networks']['whaler_nw']['IPAddress'];
                } else {
                    status = 'OFF';
                }
            } catch (e) {}

            response.push({
                name: name,
                status: status,
                ip: ip,
                volatile: !app.config['data']['services'][name]
            });
        }

        ctx.result = response;
    });

}