refactor container code into docker.js
This commit is contained in:
Girish Ramakrishnan
+16
-211
@@ -135,179 +135,23 @@ function unconfigureNginx(app, callback) {
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exports._reloadNginx(callback);
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}
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function pullImage(app, callback) {
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docker.connection.pull(app.manifest.dockerImage, function (err, stream) {
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if (err) return callback(new Error('Error connecting to docker. statusCode: %s' + err.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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debugApp(app, 'pullImage data: %j', data);
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// The information here is useless because this is per layer as opposed to per image
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if (data.status) {
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// debugApp(app, 'progress: %s', data.status); // progressDetail { current, total }
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} else if (data.error) {
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debugApp(app, 'pullImage error detail: %s', data.errorDetail.message);
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}
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});
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stream.on('end', function () {
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debugApp(app, 'download image successfully');
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var image = docker.connection.getImage(app.manifest.dockerImage);
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image.inspect(function (err, data) {
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if (err) return callback(new Error('Error inspecting image:' + err.message));
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if (!data || !data.Config) return callback(new Error('Missing Config in image:' + JSON.stringify(data, null, 4)));
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if (!data.Config.Entrypoint && !data.Config.Cmd) return callback(new Error('Only images with entry point are allowed'));
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debugApp(app, 'This image exposes ports: %j', data.Config.ExposedPorts);
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callback(null);
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});
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});
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stream.on('error', function (error) {
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debugApp(app, 'pullImage error : %j', error);
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callback(error);
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});
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});
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}
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function downloadImage(app, callback) {
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debugApp(app, 'downloadImage %s', app.manifest.dockerImage);
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var attempt = 1;
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async.retry({ times: 5, interval: 15000 }, function (retryCallback) {
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debugApp(app, 'Downloading image. attempt: %s', attempt++);
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pullImage(app, 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 createContainer(app, callback) {
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appdb.getPortBindings(app.id, function (error, portBindings) {
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if (error) return callback(error);
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addons.getEnvironment(app, function (error, addonEnv) {
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if (error) return callback(new Error('Error getting addon env: ' + error));
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var manifest = app.manifest;
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var exposedPorts = {}, dockerPortBindings = { };
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var env = [];
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docker.createContainer(app, addonEnv, function (error, container) {
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if (error) return callback(new Error('Error creating container: ' + error));
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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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for (var e in portBindings) {
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var hostPort = portBindings[e];
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var containerPort = manifest.tcpPorts[e].containerPort || hostPort;
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exposedPorts[containerPort + '/tcp'] = {};
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env.push(e + '=' + hostPort);
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dockerPortBindings[containerPort + '/tcp'] = [ { HostIp: '0.0.0.0', HostPort: hostPort + '' } ];
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}
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env.push('CLOUDRON=1');
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env.push('WEBADMIN_ORIGIN' + '=' + config.adminOrigin());
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env.push('API_ORIGIN' + '=' + config.adminOrigin());
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addons.getEnvironment(app, function (error, addonEnv) {
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if (error) return callback(new Error('Error getting addon env: ' + error));
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var memoryLimit = manifest.memoryLimit || 1024 * 1024 * 200; // 200mb by default
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var containerOptions = {
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name: app.id,
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Hostname: config.appFqdn(app.location),
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Tty: true,
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Image: app.manifest.dockerImage,
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Cmd: null,
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Env: env.concat(addonEnv),
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ExposedPorts: 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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HostConfig: {
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Binds: addons.getBindsSync(app, app.manifest.addons),
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Memory: memoryLimit / 2,
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MemorySwap: memoryLimit, // Memory + Swap
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PortBindings: dockerPortBindings,
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PublishAllPorts: false,
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ReadonlyRootfs: semver.gte(targetBoxVersion(app.manifest), '0.0.66'), // see also Volumes in startContainer
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Links: addons.getLinksSync(app, app.manifest.addons),
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RestartPolicy: {
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"Name": "always",
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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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SecurityOpt: config.CLOUDRON ? [ "apparmor:docker-cloudron-app" ] : null // profile available only on cloudron
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}
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};
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// older versions wanted a writable /var/log
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if (semver.lte(targetBoxVersion(app.manifest), '0.0.71')) containerOptions.Volumes['/var/log'] = {};
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debugApp(app, 'Creating container for %s with options: %j', app.manifest.dockerImage, containerOptions);
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docker.connection.createContainer(containerOptions, function (error, container) {
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if (error) return callback(new Error('Error creating container: ' + error));
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updateApp(app, { containerId: container.id }, callback);
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});
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updateApp(app, { containerId: container.id }, callback);
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});
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});
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}
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function deleteContainer(app, callback) {
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if (app.containerId === null) return callback(null);
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docker.deleteContainer(app, function (error) {
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if (error) return callback(new Error('Error deleting container: ' + error));
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var container = docker.connection.getContainer(app.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 updateApp(app, { containerId: null }, callback);
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if (error) debugApp(app, 'Error removing container', error);
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callback(error);
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});
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}
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function deleteImage(app, manifest, callback) {
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var dockerImage = manifest ? manifest.dockerImage : null;
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if (!dockerImage) return callback(null);
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docker.connection.getImage(dockerImage).inspect(function (error, result) {
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if (error && error.statusCode === 404) return callback(null);
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if (error) return callback(error);
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var removeOptions = {
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force: true,
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noprune: false
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};
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// delete image by id because 'docker pull' pulls down all the tags and this is the only way to delete all tags
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docker.connection.getImage(result.Id).remove(removeOptions, function (error) {
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if (error && error.statusCode === 404) return callback(null);
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if (error && error.statusCode === 409) return callback(null); // another container using the image
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if (error) debugApp(app, 'Error removing image', error);
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callback(error);
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});
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updateApp(app, { containerId: null }, callback);
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});
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}
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@@ -362,45 +206,6 @@ function removeCollectdProfile(app, callback) {
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});
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}
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function startContainer(app, callback) {
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var container = docker.connection.getContainer(app.containerId);
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debugApp(app, 'Starting container %s', container.id);
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container.start(function (error) {
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if (error && error.statusCode !== 304) return callback(new Error('Error starting container:' + error));
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return callback(null);
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});
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}
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function stopContainer(app, callback) {
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if (!app.containerId) {
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debugApp(app, 'No previous container to stop');
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return callback();
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}
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var container = docker.connection.getContainer(app.containerId);
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debugApp(app, 'Stopping container %s', container.id);
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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 Error('Error stopping container:' + error));
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debugApp(app, 'Waiting for container ' + container.id);
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container.wait(function (error, data) {
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if (error && (error.statusCode !== 304 && error.statusCode !== 404)) return callback(new Error('Error waiting on container:' + error));
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debugApp(app, 'Container stopped with status code [%s]', 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 verifyManifest(app, callback) {
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debugApp(app, 'Verifying manifest');
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@@ -559,7 +364,7 @@ function install(app, callback) {
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registerSubdomain.bind(null, app),
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updateApp.bind(null, app, { installationProgress: '40, Downloading image' }),
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downloadImage.bind(null, app),
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docker.downloadImage.bind(null, app),
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updateApp.bind(null, app, { installationProgress: '50, Creating volume' }),
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createVolume.bind(null, app),
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@@ -631,7 +436,7 @@ function restore(app, callback) {
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function deleteImageIfChanged(done) {
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if (!app.oldConfig || (app.oldConfig.manifest.dockerImage === app.manifest.dockerImage)) return done();
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deleteImage(app, app.oldConfig.manifest, done);
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docker.deleteImage(app, app.oldConfig.manifest, done);
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},
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removeOAuthProxyCredentials.bind(null, app),
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removeIcon.bind(null, app),
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@@ -650,7 +455,7 @@ function restore(app, callback) {
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registerSubdomain.bind(null, app),
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updateApp.bind(null, app, { installationProgress: '60, Downloading image' }),
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downloadImage.bind(null, app),
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docker.downloadImage.bind(null, app),
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updateApp.bind(null, app, { installationProgress: '65, Creating volume' }),
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createVolume.bind(null, app),
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@@ -758,7 +563,7 @@ function update(app, callback) {
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function deleteImageIfChanged(done) {
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if (app.oldConfig.manifest.dockerImage === app.manifest.dockerImage) return done();
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deleteImage(app, app.oldConfig.manifest, done);
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docker.deleteImage(app, app.oldConfig.manifest, done);
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},
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// removeIcon.bind(null, app), // do not remove icon, otherwise the UI breaks for a short time...
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@@ -775,7 +580,7 @@ function update(app, callback) {
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downloadIcon.bind(null, app),
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updateApp.bind(null, app, { installationProgress: '45, Downloading image' }),
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downloadImage.bind(null, app),
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docker.downloadImage.bind(null, app),
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updateApp.bind(null, app, { installationProgress: '70, Updating addons' }),
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addons.setupAddons.bind(null, app, app.manifest.addons),
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@@ -822,7 +627,7 @@ function uninstall(app, callback) {
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deleteVolume.bind(null, app),
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updateApp.bind(null, app, { installationProgress: '50, Deleting image' }),
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deleteImage.bind(null, app, app.manifest),
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docker.deleteImage.bind(null, app, app.manifest),
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updateApp.bind(null, app, { installationProgress: '60, Unregistering subdomain' }),
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unregisterSubdomain.bind(null, app, app.location),
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@@ -842,7 +647,7 @@ function uninstall(app, callback) {
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}
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function runApp(app, callback) {
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startContainer(app, function (error) {
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docker.startContainer(app, function (error) {
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if (error) return callback(error);
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updateApp(app, { runState: appdb.RSTATE_RUNNING }, callback);
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@@ -850,7 +655,7 @@ function runApp(app, callback) {
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}
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function stopApp(app, callback) {
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stopContainer(app, function (error) {
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docker.stopContainer(app, function (error) {
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if (error) return callback(error);
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updateApp(app, { runState: appdb.RSTATE_STOPPED }, callback);
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