function retrieveInstance()

in app/scripts/modules/google/instance/details/instance.details.controller.js [66:174]
96 lines of code
14 McCabe index (conditional complexity)

    function retrieveInstance() {
      var extraData = {};
      var instanceSummary, loadBalancers, account, region, vpcId;
      if (!app.serverGroups) {
        // standalone instance
        instanceSummary = {};
        loadBalancers = [];
        account = instance.account;
        region = instance.region;
      } else {
        app.serverGroups.data.some(function (serverGroup) {
          return serverGroup.instances.some(function (possibleInstance) {
            if (possibleInstance.id === instance.instanceId) {
              instanceSummary = possibleInstance;
              loadBalancers = serverGroup.loadBalancers;
              account = serverGroup.account;
              region = serverGroup.region;
              extraData.serverGroup = serverGroup.name;
              return true;
            }
          });
        });
        if (!instanceSummary) {
          // perhaps it is in a server group that is part of another application
          app.loadBalancers.data.some(function (loadBalancer) {
            return loadBalancer.instances.some(function (possibleInstance) {
              if (possibleInstance.id === instance.instanceId) {
                instanceSummary = possibleInstance;
                loadBalancers = [loadBalancer.name];
                account = loadBalancer.account;
                region = loadBalancer.region;
                vpcId = loadBalancer.vpcId;
                return true;
              }
            });
          });
          if (!instanceSummary) {
            // perhaps it is in a disabled server group via a load balancer
            app.loadBalancers.data.some(function (loadBalancer) {
              return loadBalancer.serverGroups.some(function (serverGroup) {
                if (!serverGroup.isDisabled) {
                  return false;
                }
                return serverGroup.instances.some(function (possibleInstance) {
                  if (possibleInstance.id === instance.instanceId) {
                    instanceSummary = possibleInstance;
                    loadBalancers = [loadBalancer.name];
                    account = loadBalancer.account;
                    region = loadBalancer.region;
                    vpcId = loadBalancer.vpcId;
                    return true;
                  }
                });
              });
            });
          }
        }
      }

      if (instanceSummary && account && region) {
        extraData.account = account;
        extraData.region = region;
        recentHistoryService.addExtraDataToLatest('instances', extraData);
        return instanceReader.getInstanceDetails(account, region, instance.instanceId).then(function(details) {
          $scope.state.loading = false;
          extractHealthMetrics(instanceSummary, details);
          $scope.instance = _.defaults(details, instanceSummary);
          $scope.instance.account = account;
          $scope.instance.region = region;
          $scope.instance.vpcId = vpcId;
          $scope.instance.loadBalancers = gceHttpLoadBalancerUtils.normalizeLoadBalancerNamesForAccount(
            loadBalancers,
            account,
            app.getDataSource('loadBalancers').data);

          $scope.instance.internalDnsName = $scope.instance.instanceId;
          $scope.instance.internalIpAddress = $scope.instance.networkInterfaces[0].networkIP;

          if ($scope.instance.networkInterfaces[0].accessConfigs) {
            $scope.instance.externalIpAddress = $scope.instance.networkInterfaces[0].accessConfigs[0].natIP;
          }

          $scope.baseIpAddress = $scope.instance.externalIpAddress || $scope.instance.internalIpAddress;
          $scope.instance.network = getNetwork();
          $scope.instance.subnet = getSubnet();

          $scope.instance.sshLink =
            $scope.instance.selfLink.replace(/www.googleapis.com\/compute\/(alpha|beta|v1)/, 'cloudssh.developers.google.com') + '?authuser=0&hl=en_US';

          var pathSegments = $scope.instance.selfLink.split('/');
          var projectId = pathSegments[pathSegments.indexOf('projects') + 1];
          $scope.instance.logsLink =
            'https://console.developers.google.com/project/' + projectId + '/logs?service=gce_instance&minLogLevel=0&filters=text:' + $scope.instance.instanceId;

          $scope.instance.gcloudSSHCommand = 'gcloud compute ssh --project ' + projectId + ' --zone ' + $scope.instance.placement.availabilityZone + ' ' + instance.instanceId;

          augmentTagsWithHelp();
        },
          autoClose
        );
      }

      if (!instanceSummary) {
        $scope.instanceIdNotFound = instance.instanceId;
        $scope.state.loading = false;
      }

      return $q.when(null);
    }