636 lines
24 KiB
JavaScript
636 lines
24 KiB
JavaScript
'use strict';
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exports = module.exports = {
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testRegistryConfig: testRegistryConfig,
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setRegistryConfig: setRegistryConfig,
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injectPrivateFields: injectPrivateFields,
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removePrivateFields: removePrivateFields,
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SECRET_PLACEHOLDER: String.fromCharCode(0x25CF).repeat(8),
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ping: ping,
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info: info,
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downloadImage: downloadImage,
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createContainer: createContainer,
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startContainer: startContainer,
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stopContainer: stopContainer,
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stopContainerByName: stopContainer,
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stopContainers: stopContainers,
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deleteContainer: deleteContainer,
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deleteContainerByName: deleteContainer,
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deleteImage: deleteImage,
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deleteContainers: deleteContainers,
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createSubcontainer: createSubcontainer,
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getContainerIdByIp: getContainerIdByIp,
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inspect: inspect,
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inspectByName: inspect,
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execContainer: execContainer,
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getEvents: getEvents,
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memoryUsage: memoryUsage,
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createVolume: createVolume,
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removeVolume: removeVolume,
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clearVolume: clearVolume
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};
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var addons = require('./addons.js'),
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async = require('async'),
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assert = require('assert'),
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BoxError = require('./boxerror.js'),
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child_process = require('child_process'),
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constants = require('./constants.js'),
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debug = require('debug')('box:docker'),
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Docker = require('dockerode'),
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path = require('path'),
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settings = require('./settings.js'),
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shell = require('./shell.js'),
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safe = require('safetydance'),
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util = require('util'),
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_ = require('underscore');
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const CLEARVOLUME_CMD = path.join(__dirname, 'scripts/clearvolume.sh'),
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MKDIRVOLUME_CMD = path.join(__dirname, 'scripts/mkdirvolume.sh');
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const DOCKER_SOCKET_PATH = '/var/run/docker.sock';
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const gConnection = new Docker({ socketPath: DOCKER_SOCKET_PATH });
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function debugApp(app) {
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assert(typeof app === 'object');
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debug(app.fqdn + ' ' + util.format.apply(util, Array.prototype.slice.call(arguments, 1)));
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}
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function testRegistryConfig(auth, callback) {
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assert.strictEqual(typeof auth, 'object');
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assert.strictEqual(typeof callback, 'function');
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gConnection.checkAuth(auth, function (error /*, data */) { // this returns a 500 even for auth errors
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if (error) return callback(new BoxError(BoxError.BAD_FIELD, error, { field: 'serverAddress' }));
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callback();
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});
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}
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function injectPrivateFields(newConfig, currentConfig) {
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if (newConfig.password === exports.SECRET_PLACEHOLDER) newConfig.password = currentConfig.password;
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}
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function removePrivateFields(registryConfig) {
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assert.strictEqual(typeof registryConfig, 'object');
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if (registryConfig.password) registryConfig.password = exports.SECRET_PLACEHOLDER;
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return registryConfig;
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}
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function setRegistryConfig(auth, callback) {
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assert.strictEqual(typeof auth, 'object');
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assert.strictEqual(typeof callback, 'function');
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const isLogin = !!auth.password;
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// currently, auth info is not stashed in the db but maybe it should for restore to work?
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const cmd = isLogin ? `docker login ${auth.serverAddress} --username ${auth.username} --password ${auth.password}` : `docker logout ${auth.serverAddress}`;
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child_process.exec(cmd, { }, function (error /*, stdout, stderr */) {
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if (error) return callback(new BoxError(BoxError.ACCESS_DENIED, error.message));
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callback();
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});
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}
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function ping(callback) {
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assert.strictEqual(typeof callback, 'function');
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// do not let the request linger
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const connection = new Docker({ socketPath: DOCKER_SOCKET_PATH, timeout: 1000 });
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connection.ping(function (error, result) {
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if (error) return callback(new BoxError(BoxError.DOCKER_ERROR, error));
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if (result !== 'OK') return callback(new BoxError(BoxError.DOCKER_ERROR, 'Unable to ping the docker daemon'));
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callback(null);
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});
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}
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function getRegistryConfig(image, callback) {
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// https://github.com/docker/distribution/blob/release/2.7/reference/normalize.go#L62
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const parts = image.split('/');
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if (parts.length === 1 || (parts[0].match(/[.:]/) === null)) return callback(null, null); // public docker registry
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settings.getRegistryConfig(function (error, registryConfig) {
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if (error) return callback(error);
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// https://github.com/apocas/dockerode#pull-from-private-repos
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const auth = {
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username: registryConfig.username,
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password: registryConfig.password,
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auth: registryConfig.auth || '', // the auth token at login time
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email: registryConfig.email || '',
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serveraddress: registryConfig.serverAddress
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};
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callback(null, auth);
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});
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}
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function pullImage(manifest, callback) {
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getRegistryConfig(manifest.dockerImage, function (error, authConfig) {
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if (error) return callback(error);
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debug(`pullImage: will pull ${manifest.dockerImage}. auth: ${authConfig ? 'yes' : 'no'}`);
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gConnection.pull(manifest.dockerImage, { authconfig: authConfig }, function (error, stream) {
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if (error) return callback(new BoxError(BoxError.DOCKER_ERROR, 'Unable to pull image. Please check the network or if the image needs authentication. statusCode: ' + error.statusCode));
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// https://github.com/dotcloud/docker/issues/1074 says each status message
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// is emitted as a chunk
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stream.on('data', function (chunk) {
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var data = safe.JSON.parse(chunk) || { };
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debug('pullImage: %j', data);
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// The data.status here is useless because this is per layer as opposed to per image
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if (!data.status && data.error) {
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debug('pullImage error %s: %s', manifest.dockerImage, data.errorDetail.message);
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}
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});
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stream.on('end', function () {
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debug('downloaded image %s', manifest.dockerImage);
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callback(null);
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});
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stream.on('error', function (error) {
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debug('error pulling image %s: %j', manifest.dockerImage, error);
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callback(new BoxError(BoxError.DOCKER_ERROR, error.message));
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});
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});
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});
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}
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function downloadImage(manifest, callback) {
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assert.strictEqual(typeof manifest, 'object');
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assert.strictEqual(typeof callback, 'function');
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debug('downloadImage %s', manifest.dockerImage);
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var attempt = 1;
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async.retry({ times: 10, interval: 15000 }, function (retryCallback) {
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debug('Downloading image %s. attempt: %s', manifest.dockerImage, attempt++);
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pullImage(manifest, function (error) {
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if (error) console.error(error);
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retryCallback(error);
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});
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}, callback);
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}
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function createSubcontainer(app, name, cmd, options, callback) {
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assert.strictEqual(typeof app, 'object');
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assert.strictEqual(typeof name, 'string');
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assert(!cmd || util.isArray(cmd));
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assert.strictEqual(typeof options, 'object');
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assert.strictEqual(typeof callback, 'function');
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let isAppContainer = !cmd; // non app-containers are like scheduler and exec (terminal) containers
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var manifest = app.manifest;
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var exposedPorts = {}, dockerPortBindings = { };
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var domain = app.fqdn;
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const hostname = isAppContainer ? app.id : name;
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const envPrefix = manifest.manifestVersion <= 1 ? '' : 'CLOUDRON_';
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let stdEnv = [
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'CLOUDRON=1',
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'CLOUDRON_PROXY_IP=172.18.0.1',
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`CLOUDRON_APP_HOSTNAME=${app.id}`,
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`${envPrefix}WEBADMIN_ORIGIN=${settings.adminOrigin()}`,
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`${envPrefix}API_ORIGIN=${settings.adminOrigin()}`,
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`${envPrefix}APP_ORIGIN=https://${domain}`,
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`${envPrefix}APP_DOMAIN=${domain}`
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];
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// docker portBindings requires ports to be exposed
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exposedPorts[manifest.httpPort + '/tcp'] = {};
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dockerPortBindings[manifest.httpPort + '/tcp'] = [ { HostIp: '127.0.0.1', HostPort: app.httpPort + '' } ];
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var portEnv = [];
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for (let portName in app.portBindings) {
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const hostPort = app.portBindings[portName];
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const portType = (manifest.tcpPorts && portName in manifest.tcpPorts) ? 'tcp' : 'udp';
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const ports = portType == 'tcp' ? manifest.tcpPorts : manifest.udpPorts;
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var containerPort = ports[portName].containerPort || hostPort;
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exposedPorts[`${containerPort}/${portType}`] = {};
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portEnv.push(`${portName}=${hostPort}`);
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dockerPortBindings[`${containerPort}/${portType}`] = [ { HostIp: '0.0.0.0', HostPort: hostPort + '' } ];
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}
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let appEnv = [];
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Object.keys(app.env).forEach(function (name) { appEnv.push(`${name}=${app.env[name]}`); });
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// first check db record, then manifest
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var memoryLimit = app.memoryLimit || manifest.memoryLimit || 0;
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if (memoryLimit === -1) { // unrestricted
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memoryLimit = 0;
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} else if (memoryLimit === 0 || memoryLimit < constants.DEFAULT_MEMORY_LIMIT) { // ensure we never go below minimum (in case we change the default)
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memoryLimit = constants.DEFAULT_MEMORY_LIMIT;
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}
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// give scheduler tasks twice the memory limit since background jobs take more memory
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// if required, we can make this a manifest and runtime argument later
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if (!isAppContainer) memoryLimit *= 2;
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addons.getEnvironment(app, function (error, addonEnv) {
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if (error) return callback(error);
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// do no set hostname of containers to location as it might conflict with addons names. for example, an app installed in mail
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// location may not reach mail container anymore by DNS. We cannot set hostname to fqdn either as that sets up the dns
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// name to look up the internal docker ip. this makes curl from within container fail
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// Note that Hostname has no effect on DNS. We have to use the --net-alias for dns.
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// Hostname cannot be set with container NetworkMode
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var containerOptions = {
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name: name, // for referencing containers
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Tty: isAppContainer,
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Hostname: hostname,
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Image: app.manifest.dockerImage,
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Cmd: (isAppContainer && app.debugMode && app.debugMode.cmd) ? app.debugMode.cmd : cmd,
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Env: stdEnv.concat(addonEnv).concat(portEnv).concat(appEnv),
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ExposedPorts: isAppContainer ? exposedPorts : { },
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Volumes: { // see also ReadonlyRootfs
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'/tmp': {},
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'/run': {}
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},
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Labels: {
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'fqdn': app.fqdn,
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'appId': app.id,
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'isSubcontainer': String(!isAppContainer),
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'isCloudronManaged': String(true)
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},
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HostConfig: {
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Mounts: addons.getMountsSync(app, app.manifest.addons),
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LogConfig: {
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Type: 'syslog',
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Config: {
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'tag': app.id,
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'syslog-address': 'udp://127.0.0.1:2514', // see apps.js:validatePortBindings()
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'syslog-format': 'rfc5424'
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}
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},
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Memory: memoryLimit / 2,
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MemorySwap: memoryLimit, // Memory + Swap
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PortBindings: isAppContainer ? dockerPortBindings : { },
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PublishAllPorts: false,
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ReadonlyRootfs: app.debugMode ? !!app.debugMode.readonlyRootfs : true,
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RestartPolicy: {
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'Name': isAppContainer ? 'unless-stopped' : 'no',
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'MaximumRetryCount': 0
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},
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CpuShares: 512, // relative to 1024 for system processes
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VolumesFrom: isAppContainer ? null : [ app.containerId + ':rw' ],
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NetworkMode: 'cloudron', // user defined bridge network
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Dns: ['172.18.0.1'], // use internal dns
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DnsSearch: ['.'], // use internal dns
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SecurityOpt: [ 'apparmor=docker-cloudron-app' ]
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},
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NetworkingConfig: {
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EndpointsConfig: {
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cloudron: {
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Aliases: [ name ] // this allows sub-containers reach app containers by name
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}
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}
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}
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};
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var capabilities = manifest.capabilities || [];
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if (capabilities.includes('net_admin')) {
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containerOptions.HostConfig.CapAdd = [
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'NET_ADMIN'
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];
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}
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containerOptions = _.extend(containerOptions, options);
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debugApp(app, 'Creating container for %s', app.manifest.dockerImage);
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gConnection.createContainer(containerOptions, function (error, container) {
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if (error) return callback(new BoxError(BoxError.DOCKER_ERROR, error));
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callback(null, container);
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});
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});
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}
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function createContainer(app, callback) {
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createSubcontainer(app, app.id /* name */, null /* cmd */, { } /* options */, callback);
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}
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function startContainer(containerId, callback) {
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assert.strictEqual(typeof containerId, 'string');
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assert.strictEqual(typeof callback, 'function');
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var container = gConnection.getContainer(containerId);
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debug('Starting container %s', containerId);
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container.start(function (error) {
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if (error && error.statusCode === 404) return callback(new BoxError(BoxError.NOT_FOUND));
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if (error && error.statusCode === 400) return callback(new BoxError(BoxError.BAD_FIELD, error)); // e.g start.sh is not executable
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if (error && error.statusCode !== 304) return callback(new BoxError(BoxError.DOCKER_ERROR, error));
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return callback(null);
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});
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}
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function stopContainer(containerId, callback) {
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assert(!containerId || typeof containerId === 'string');
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assert.strictEqual(typeof callback, 'function');
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if (!containerId) {
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debug('No previous container to stop');
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return callback();
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}
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var container = gConnection.getContainer(containerId);
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debug('Stopping container %s', containerId);
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var options = {
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t: 10 // wait for 10 seconds before killing it
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};
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container.stop(options, function (error) {
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if (error && (error.statusCode !== 304 && error.statusCode !== 404)) return callback(new BoxError(BoxError.DOCKER_ERROR, 'Error stopping container:' + error.message));
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debug('Waiting for container ' + containerId);
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container.wait(function (error, data) {
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if (error && (error.statusCode !== 304 && error.statusCode !== 404)) return callback(new BoxError(BoxError.DOCKER_ERROR, 'Error waiting on container:' + error.message));
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debug('Container %s stopped with status code [%s]', containerId, data ? String(data.StatusCode) : '');
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return callback(null);
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});
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});
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}
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function deleteContainer(containerId, callback) {
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assert(!containerId || typeof containerId === 'string');
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assert.strictEqual(typeof callback, 'function');
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debug('deleting container %s', containerId);
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if (containerId === null) return callback(null);
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var container = gConnection.getContainer(containerId);
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var removeOptions = {
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force: true, // kill container if it's running
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v: true // removes volumes associated with the container (but not host mounts)
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};
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container.remove(removeOptions, function (error) {
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if (error && error.statusCode === 404) return callback(null);
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if (error) {
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debug('Error removing container %s : %j', containerId, error);
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return callback(new BoxError(BoxError.DOCKER_ERROR, error));
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}
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callback(null);
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});
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}
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function deleteContainers(appId, options, callback) {
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assert.strictEqual(typeof appId, 'string');
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assert.strictEqual(typeof options, 'object');
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assert.strictEqual(typeof callback, 'function');
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debug('deleting containers of %s', appId);
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let labels = [ 'appId=' + appId ];
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if (options.managedOnly) labels.push('isCloudronManaged=true');
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gConnection.listContainers({ all: 1, filters: JSON.stringify({ label: labels }) }, function (error, containers) {
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if (error) return callback(new BoxError(BoxError.DOCKER_ERROR, error));
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async.eachSeries(containers, function (container, iteratorDone) {
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deleteContainer(container.Id, iteratorDone);
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}, callback);
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});
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}
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function stopContainers(appId, callback) {
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assert.strictEqual(typeof appId, 'string');
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assert.strictEqual(typeof callback, 'function');
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debug('stopping containers of %s', appId);
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gConnection.listContainers({ all: 1, filters: JSON.stringify({ label: [ 'appId=' + appId ] }) }, function (error, containers) {
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if (error) return callback(new BoxError(BoxError.DOCKER_ERROR, error));
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async.eachSeries(containers, function (container, iteratorDone) {
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stopContainer(container.Id, iteratorDone);
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}, callback);
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});
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}
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function deleteImage(manifest, callback) {
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assert(!manifest || typeof manifest === 'object');
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assert.strictEqual(typeof callback, 'function');
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var dockerImage = manifest ? manifest.dockerImage : null;
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if (!dockerImage) return callback(null);
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var removeOptions = {
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force: false, // might be shared with another instance of this app
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noprune: false // delete untagged parents
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};
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// registry v1 used to pull down all *tags*. this meant that deleting image by tag was not enough (since that
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// just removes the tag). we used to remove the image by id. this is not required anymore because aliases are
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// not created anymore after https://github.com/docker/docker/pull/10571
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gConnection.getImage(dockerImage).remove(removeOptions, function (error) {
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if (error && error.statusCode === 400) return callback(null); // invalid image format. this can happen if user installed with a bad --docker-image
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if (error && error.statusCode === 404) return callback(null); // not found
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if (error && error.statusCode === 409) return callback(null); // another container using the image
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if (error) {
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debug('Error removing image %s : %j', dockerImage, error);
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return callback(new BoxError(BoxError.DOCKER_ERROR, error));
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}
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callback(null);
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});
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}
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function getContainerIdByIp(ip, callback) {
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assert.strictEqual(typeof ip, 'string');
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assert.strictEqual(typeof callback, 'function');
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gConnection.getNetwork('cloudron').inspect(function (error, bridge) {
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if (error && error.statusCode === 404) return callback(new BoxError(BoxError.DOCKER_ERROR, 'Unable to find the cloudron network'));
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if (error) return callback(new BoxError(BoxError.DOCKER_ERROR, error));
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var containerId;
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for (var id in bridge.Containers) {
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if (bridge.Containers[id].IPv4Address.indexOf(ip + '/16') === 0) {
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containerId = id;
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break;
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}
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}
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if (!containerId) return callback(new BoxError(BoxError.DOCKER_ERROR, 'No container with that ip'));
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callback(null, containerId);
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});
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}
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function inspect(containerId, callback) {
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assert.strictEqual(typeof containerId, 'string');
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assert.strictEqual(typeof callback, 'function');
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var container = gConnection.getContainer(containerId);
|
|
|
|
container.inspect(function (error, result) {
|
|
if (error && error.statusCode === 404) return callback(new BoxError(BoxError.NOT_FOUND));
|
|
if (error) return callback(new BoxError(BoxError.DOCKER_ERROR, error));
|
|
|
|
callback(null, result);
|
|
});
|
|
}
|
|
|
|
function execContainer(containerId, options, callback) {
|
|
assert.strictEqual(typeof containerId, 'string');
|
|
assert.strictEqual(typeof options, 'object');
|
|
assert.strictEqual(typeof callback, 'function');
|
|
|
|
var container = gConnection.getContainer(containerId);
|
|
|
|
container.exec(options.execOptions, function (error, exec) {
|
|
if (error && error.statusCode === 409) return callback(new BoxError(BoxError.BAD_STATE, error.message)); // container restarting/not running
|
|
if (error) return callback(new BoxError(BoxError.DOCKER_ERROR, error));
|
|
|
|
exec.start(options.startOptions, function(error, stream /* in hijacked mode, this is a net.socket */) {
|
|
if (error) return callback(new BoxError(BoxError.DOCKER_ERROR, error));
|
|
|
|
if (options.rows && options.columns) {
|
|
// there is a race where resizing too early results in a 404 "no such exec"
|
|
// https://git.cloudron.io/cloudron/box/issues/549
|
|
setTimeout(function () {
|
|
exec.resize({ h: options.rows, w: options.columns }, function (error) { if (error) debug('Error resizing console', error); });
|
|
}, 2000);
|
|
}
|
|
|
|
callback(null, stream);
|
|
});
|
|
});
|
|
}
|
|
|
|
function getEvents(options, callback) {
|
|
assert.strictEqual(typeof options, 'object');
|
|
assert.strictEqual(typeof callback, 'function');
|
|
|
|
gConnection.getEvents(options, function (error, stream) {
|
|
if (error) return callback(new BoxError(BoxError.DOCKER_ERROR, error));
|
|
|
|
callback(null, stream);
|
|
});
|
|
}
|
|
|
|
function memoryUsage(containerId, callback) {
|
|
assert.strictEqual(typeof containerId, 'string');
|
|
assert.strictEqual(typeof callback, 'function');
|
|
|
|
var container = gConnection.getContainer(containerId);
|
|
|
|
container.stats({ stream: false }, function (error, result) {
|
|
if (error && error.statusCode === 404) return callback(new BoxError(BoxError.NOT_FOUND));
|
|
if (error) return callback(new BoxError(BoxError.DOCKER_ERROR, error));
|
|
|
|
callback(null, result);
|
|
});
|
|
}
|
|
|
|
function createVolume(app, name, volumeDataDir, callback) {
|
|
assert.strictEqual(typeof app, 'object');
|
|
assert.strictEqual(typeof name, 'string');
|
|
assert.strictEqual(typeof volumeDataDir, 'string');
|
|
assert.strictEqual(typeof callback, 'function');
|
|
|
|
const volumeOptions = {
|
|
Name: name,
|
|
Driver: 'local',
|
|
DriverOpts: { // https://github.com/moby/moby/issues/19990#issuecomment-248955005
|
|
type: 'none',
|
|
device: volumeDataDir,
|
|
o: 'bind'
|
|
},
|
|
Labels: {
|
|
'fqdn': app.fqdn,
|
|
'appId': app.id
|
|
},
|
|
};
|
|
|
|
// requires sudo because the path can be outside appsdata
|
|
shell.sudo('createVolume', [ MKDIRVOLUME_CMD, volumeDataDir ], {}, function (error) {
|
|
if (error) return callback(new BoxError(BoxError.FS_ERROR, `Error creating app data dir: ${error.message}`));
|
|
|
|
gConnection.createVolume(volumeOptions, function (error) {
|
|
if (error) return callback(new BoxError(BoxError.DOCKER_ERROR, error));
|
|
|
|
callback();
|
|
});
|
|
});
|
|
}
|
|
|
|
function clearVolume(app, name, options, callback) {
|
|
assert.strictEqual(typeof app, 'object');
|
|
assert.strictEqual(typeof name, 'string');
|
|
assert.strictEqual(typeof options, 'object');
|
|
assert.strictEqual(typeof callback, 'function');
|
|
|
|
let volume = gConnection.getVolume(name);
|
|
volume.inspect(function (error, v) {
|
|
if (error && error.statusCode === 404) return callback();
|
|
if (error) return callback(new BoxError(BoxError.DOCKER_ERROR, error));
|
|
|
|
const volumeDataDir = v.Options.device;
|
|
shell.sudo('clearVolume', [ CLEARVOLUME_CMD, options.removeDirectory ? 'rmdir' : 'clear', volumeDataDir ], {}, function (error) {
|
|
if (error) return callback(new BoxError(BoxError.FS_ERROR, error));
|
|
|
|
callback();
|
|
});
|
|
});
|
|
}
|
|
|
|
// this only removes the volume and not the data
|
|
function removeVolume(app, name, callback) {
|
|
assert.strictEqual(typeof app, 'object');
|
|
assert.strictEqual(typeof name, 'string');
|
|
assert.strictEqual(typeof callback, 'function');
|
|
|
|
let volume = gConnection.getVolume(name);
|
|
volume.remove(function (error) {
|
|
if (error && error.statusCode !== 404) return callback(new BoxError(BoxError.DOCKER_ERROR, `removeVolume: Error removing volume of ${app.id} ${error.message}`));
|
|
|
|
callback();
|
|
});
|
|
}
|
|
|
|
function info(callback) {
|
|
assert.strictEqual(typeof callback, 'function');
|
|
|
|
gConnection.info(function (error, result) {
|
|
if (error) return callback(new BoxError(BoxError.DOCKER_ERROR, 'Error connecting to docker'));
|
|
|
|
callback(null, result);
|
|
});
|
|
}
|