docs/meteor/client/lib/apputil.js

var exec = require('exec');
var path = require('path');
var fs = require('fs');
var async = require('async');
var Convert = require('ansi-to-html');
var convert = new Convert();

AppUtil = {};

AppUtil.run = function (app, callback) {
  var image = Images.findOne({_id: app.imageId});
  Apps.update(app._id, {$set: {
    status: 'STARTING'
  }});
  Docker.removeContainer(app.name, function (err) {
    Docker.runContainer(app, image, function (err, container) {
      if (err) { callback(err); }
      Docker.getContainerData(container.id, function (err, data) {
        if (err) { callback(err); }
        // Set a delay for app to spin up
        Apps.update(app._id, {$set: {
          docker: data,
          status: 'READY'
        }});
        callback();
      });
    });
  });
};

AppUtil.start = function (appId) {
  var app = Apps.findOne(appId);
  if (app && app.docker) {
    Apps.update(app._id, {$set: {
      status: 'STARTING'
    }});
    Docker.startContainer(app.docker.Id, function (err) {
      if (err) { console.error(err); }
      Docker.getContainerData(app.docker.Id, function (err, data) {
        if (err) { console.error(err); }
        Apps.update(app._id, {$set: {
          status: 'READY',
          docker: data
        }});
      });
    });
  }
};

AppUtil.stop = function (appId) {
  var app = Apps.findOne(appId);
  if (app && app.docker) {
    Apps.update(app._id, {$set: {
      status: 'STOPPING'
    }});
    Docker.stopContainer(app.docker.Id, function (err) {
      if (err) { console.error(err); }
      Meteor.setTimeout(function () {
        Apps.update(app._id, {$set: {
          status: 'STOPPED'
        }});
      }, 2500);
    });
  }
};

AppUtil.remove = function (appId) {
  var app = Apps.findOne(appId);
  if (app.docker) {
    Docker.removeContainer(app.docker.Id, function (err) {
      Apps.remove({_id: appId});
      var appPath = path.join(Util.KITE_PATH, app.name);
      Util.deleteFolder(appPath);
    });
  }
};

AppUtil.configVar = function (appId, configVars) {
  Apps.update(appId, {$set: {
    config: configVars,
    status: 'STARTING'
  }});
  var app = Apps.findOne({_id: appId});
  AppUtil.run(Apps.findOne(appId), function (err) {
    if (err) {
      throw err;
    }
  });
};

AppUtil.logs = function (appId) {
  var app = Apps.findOne(appId);
  if (app.docker && app.docker.Id) {
    var container = Docker.client().getContainer(app.docker.Id);
    container.logs({follow: false, stdout: true, stderr: true, timestamps: false, tail: 300}, function (err, response) {
      if (err) { throw err; }
      Apps.update(app._id, {
        $set: {
          logs: []
        }
      });
      response.setEncoding('utf8');
      response.on('data', function (line) {
        Apps.update(app._id, {
          $push: {
            logs: convert.toHtml(line.slice(8))
          }
        });
      });
      response.on('end', function () {});
    });
  }
};

AppUtil.recover = function () {
  var apps = Apps.find({}).fetch();
  _.each(apps, function (app) {
    // Update the app with the latest container info
    if (!app.docker) {
      return;
    }
    var container = Docker.client().getContainer(app.docker.Id);
    container.inspect(function (err, data) {
      if (app.status !== 'STARTING' && app.status !== 'STOPPING' && app.status !== 'STOPPED' && data && data.State && !data.State.Running) {
        console.log('Restarting: ' + app.name);
        console.log(app.docker.Id);
        AppUtil.restartHelper(app, function (err) {
          if (err) { console.error(err); }
        });
      }
    });
  });
};

AppUtil.sync = function (callback) {
  Docker.listContainers(function (err, containers) {
    if (err) {
      callback(err);
      return;
    }

    var apps = Apps.find({}).fetch();
    var guiIds = _.map(apps, function (app) {
      if (app.docker && app.docker.Id) {
        return app.docker.Id;
      }
    });
    var containerIds = _.map(containers, function (container) {
      return container.Id;
    });
    var diffApps = _.difference(guiIds, containerIds);
    _.each(diffApps, function (appContainerId) {
      var app = Apps.findOne({'docker.Id': appContainerId});
      if (app && app.status !== 'STARTING') {
        AppUtil.remove(app._id);
      }
    });
    var diffContainers = _.reject(containers, function (container) {
      return _.contains(guiIds, container.Id);
    });
    _.each(diffContainers, function (container) {
      var appName = container.Name.substring(1);
      var startingApp = _.find(apps, function (app) {
        return app.status === 'STARTING' && app.name === appName;
      });

      if (startingApp || _.isEmpty(container.NetworkSettings.Ports)) {
        return;
      }

      var appPath = path.join(Util.KITE_PATH, appName);
      if (!fs.existsSync(appPath)) {
        console.log('Created Kite ' + appName + ' directory.');
        fs.mkdirSync(appPath, function (err) {
          if (err) { throw err; }
        });
      }
      var envVars = container.Config.Env;
      var config = {};
      _.each(envVars, function (envVar) {
        var eqPos = envVar.indexOf('=');
        var envKey = envVar.substring(0, eqPos);
        var envVal = envVar.substring(eqPos + 1);
        config[envKey] = envVal;
      });
      var status = 'STARTING';
      if (container.State.Running) {
        status = 'READY';
      } else {
        status = 'ERROR';
      }

      var appObj = {
        name: appName,
        docker: container,
        status: status,
        config: config,
        path: appPath,
        logs: [],
        createdAt: new Date()
      };

      var image = Images.findOne({'docker.Id': container.Image});
      if (image) {
        appObj.imageId = image._id;
      }
      if (container.HostConfig.Binds && container.HostConfig.Binds.length) {
        appObj.volumesEnabled = true;
      } else {
        appObj.volumesEnabled = false;
      }
      console.log(appObj);
      Apps.insert(appObj);
    });

    async.each(apps, function (app, callback) {
      if (app && app.docker && app.docker.Id) {
        var duplicateApps = Apps.find({'docker.Id': app.docker.Id, _id: {$ne: app._id}}).fetch();
        _.each(duplicateApps, function (duplicateApp) {
          Apps.remove(duplicateApp._id);
        });
        Docker.getContainerData(app.docker.Id, function (err, data) {
          if (err) {callback(err); return;}
          var status = 'STARTING';
          if (data && data.State && data.State.Running) {
            status = 'READY';
          } else if (data && data.State && !data.State.Running) {
            status = 'ERROR';
          }
          Apps.update(app._id, {
            $set: {
              docker: data,
              status: status
            }
          });
          callback();
        });
      }
    }, function (err) {
      callback(err);
    });
  });
};