protected override async Task PerformActionAsync()

in src/Amazon.ECS.Tools/Commands/DeployTaskCommand.cs [77:185]
89 lines of code
11 McCabe index (conditional complexity)

        protected override async Task<bool> PerformActionAsync()
        {
            var skipPush = this.GetBoolValueOrDefault(this.DeployTaskProperties.SkipImagePush, ECSDefinedCommandOptions.ARGUMENT_SKIP_IMAGE_PUSH, false).GetValueOrDefault();
            var ecsContainer = this.GetStringValueOrDefault(this.TaskDefinitionProperties.ContainerName, ECSDefinedCommandOptions.ARGUMENT_CONTAINER_NAME, true);
            var ecsTaskDefinition = this.GetStringValueOrDefault(this.TaskDefinitionProperties.TaskDefinitionName, ECSDefinedCommandOptions.ARGUMENT_TD_NAME, true);

            this.PushDockerImageProperties.DockerImageTag = GetDockerImageTag();

            if (!this.PushDockerImageProperties.DockerImageTag.Contains(":"))
                this.PushDockerImageProperties.DockerImageTag += ":latest";

            if (skipPush)
            {
                this.PushDockerImageProperties.DockerImageTag = await ECSUtilities.ExpandImageTagIfNecessary(this.Logger, this.ECRClient, this.PushDockerImageProperties.DockerImageTag);
            }
            else
            {
                var pushCommand = new PushDockerImageCommand(this.Logger, this.WorkingDirectory, this.OriginalCommandLineArguments)
                {
                    ConfigFile = this.ConfigFile,
                    DisableInteractive = this.DisableInteractive,
                    Credentials = this.Credentials,
                    ECRClient = this.ECRClient,
                    Profile = this.Profile,
                    ProfileLocation = this.ProfileLocation,
                    ProjectLocation = this.ProjectLocation,
                    Region = this.Region,
                    WorkingDirectory = this.WorkingDirectory,

                    PushDockerImageProperties = this.PushDockerImageProperties,
                };
                var success = await pushCommand.ExecuteAsync();

                if (!success)
                {
                    if (pushCommand.LastException != null)
                    {
                        throw pushCommand.LastException;
                    }
                    return false;
                }

                this.PushDockerImageProperties.DockerImageTag = pushCommand.PushedImageUri;
            }

            var taskDefinitionArn = await ECSUtilities.CreateOrUpdateTaskDefinition(this.Logger, this.ECSClient,
                this, this.TaskDefinitionProperties, this.PushDockerImageProperties.DockerImageTag, IsFargateLaunch(this.ClusterProperties.LaunchType));

            var ecsCluster = this.GetStringValueOrDefault(this.ClusterProperties.ECSCluster, ECSDefinedCommandOptions.ARGUMENT_ECS_CLUSTER, true);
            await ECSUtilities.EnsureClusterExistsAsync(this.Logger, this.ECSClient, ecsCluster);

            var taskCount = this.GetIntValueOrDefault(this.DeployTaskProperties.TaskCount, ECSDefinedCommandOptions.ARGUMENT_ECS_TASK_COUNT, false);
            if (!taskCount.HasValue)
                taskCount = 1;

            var taskGroup = this.GetStringValueOrDefault(this.DeployTaskProperties.TaskGroup, ECSDefinedCommandOptions.ARGUMENT_ECS_TASK_GROUP, false);
            var launchType = this.GetStringValueOrDefault(this.ClusterProperties.LaunchType, ECSDefinedCommandOptions.ARGUMENT_LAUNCH_TYPE, true);

            var runTaskRequest = new Amazon.ECS.Model.RunTaskRequest
            {
                Cluster = ecsCluster,
                TaskDefinition = taskDefinitionArn,
                Count = taskCount.Value,
                LaunchType = launchType
            };

            if (IsFargateLaunch(this.ClusterProperties.LaunchType))
            {
                var subnets = this.GetStringValuesOrDefault(this.ClusterProperties.SubnetIds, ECSDefinedCommandOptions.ARGUMENT_LAUNCH_SUBNETS, false);
                var securityGroups = this.GetStringValuesOrDefault(this.ClusterProperties.SecurityGroupIds, ECSDefinedCommandOptions.ARGUMENT_LAUNCH_SECURITYGROUPS, false);

                var networkConfiguration = new Amazon.ECS.Model.NetworkConfiguration();
                await ECSUtilities.SetupAwsVpcNetworkConfigurationAsync(this, networkConfiguration);

                runTaskRequest.NetworkConfiguration = networkConfiguration;

                await this.AttemptToCreateServiceLinkRoleAsync();
            }
            else
            {
                runTaskRequest.PlacementConstraints = ECSUtilities.ConvertPlacementConstraint(this.GetStringValuesOrDefault(this.DeployTaskProperties.PlacementConstraints, ECSDefinedCommandOptions.ARGUMENT_PLACEMENT_CONSTRAINTS, false));
                runTaskRequest.PlacementStrategy = ECSUtilities.ConvertPlacementStrategy(this.GetStringValuesOrDefault(this.DeployTaskProperties.PlacementStrategy, ECSDefinedCommandOptions.ARGUMENT_PLACEMENT_STRATEGY, false));
            }

            if (!string.IsNullOrEmpty(taskGroup))
                runTaskRequest.Group = taskGroup;


            try
            {
                var response = await this.ECSClient.RunTaskAsync(runTaskRequest);
                this.Logger?.WriteLine($"Started {response.Tasks.Count} task:");
                foreach(var task in response.Tasks)
                {
                    this.Logger?.WriteLine($"\t{task.TaskArn}");
                }
            }
            catch(Exception e)
            {
                throw new DockerToolsException("Error executing deploy-task: " + e.Message, DockerToolsException.ECSErrorCode.RunTaskFail);
            }

            if (this.GetBoolValueOrDefault(this.PersistConfigFile, CommonDefinedCommandOptions.ARGUMENT_PERSIST_CONFIG_FILE, false).GetValueOrDefault())
            {
                this.SaveConfigFile();
            }

            return true;
        }