protected override async Task ProcessCommandInternalAsync()

in src/Agent.Plugins/BuildArtifact/BuildArtifactPluginV1.cs [84:335]


        protected override async Task ProcessCommandInternalAsync(
            AgentTaskPluginExecutionContext context,
            CancellationToken token)
        {
            ArgUtil.NotNull(context, nameof(context));
            string artifactName = context.GetInput(TaskProperties.ArtifactName, required: false);
            string branchName = context.GetInput(TaskProperties.BranchName, required: false);
            string definition = context.GetInput(TaskProperties.Definition, required: false);
            string buildType = context.GetInput(TaskProperties.BuildType, required: true);
            string specificBuildWithTriggering = context.GetInput(TaskProperties.SpecificBuildWithTriggering, required: false);
            string buildVersionToDownload = context.GetInput(TaskProperties.BuildVersionToDownload, required: false);
            string targetPath = context.GetInput(TaskProperties.DownloadPath, required: true);
            string cleanDestinationFolder = context.GetInput(TaskProperties.CleanDestinationFolder, required: false);
            string environmentBuildId = context.Variables.GetValueOrDefault(BuildVariables.BuildId)?.Value ?? string.Empty; // BuildID provided by environment.
            string itemPattern = context.GetInput(TaskProperties.ItemPattern, required: false);
            string projectName = context.GetInput(TaskProperties.Project, required: false);
            string tags = context.GetInput(TaskProperties.Tags, required: false);
            string allowPartiallySucceededBuilds = context.GetInput(TaskProperties.AllowPartiallySucceededBuilds, required: false);
            string allowFailedBuilds = context.GetInput(TaskProperties.AllowFailedBuilds, required: false);
            string allowCanceledBuilds = context.GetInput(TaskProperties.AllowCanceledBuilds, required: false);
            string userSpecifiedBuildId = context.GetInput(TaskProperties.BuildId, required: false);
            string defaultWorkingDirectory = context.Variables.GetValueOrDefault("system.defaultworkingdirectory").Value;
            string downloadType = context.GetInput(TaskProperties.DownloadType, required: true);
            // advanced
            string retryDownloadCount = context.GetInput(TaskProperties.RetryDownloadCount, required: false);
            string parallelizationLimit = context.GetInput(TaskProperties.ParallelizationLimit, required: false);
            string checkDownloadedFiles = context.GetInput(TaskProperties.CheckDownloadedFiles, required: false);
            string extractTars = context.GetInput(TaskProperties.ExtractTars, required: false);

            string extractedTarsTempPath = Path.Combine(context.Variables.GetValueOrDefault("Agent.TempDirectory")?.Value, extractedTarsTempDir);

            targetPath = Path.IsPathFullyQualified(targetPath) ? targetPath : Path.GetFullPath(Path.Combine(defaultWorkingDirectory, targetPath));

            string[] minimatchPatterns = itemPattern.Split(
                new[] { "\n" },
                StringSplitOptions.RemoveEmptyEntries
            );

            string[] tagsInput = tags.Split(
                new[] { "," },
                StringSplitOptions.None
            );

            if (!bool.TryParse(allowPartiallySucceededBuilds, out var allowPartiallySucceededBuildsBool))
            {
                allowPartiallySucceededBuildsBool = false;
            }
            if (!bool.TryParse(allowFailedBuilds, out var allowFailedBuildsBool))
            {
                allowFailedBuildsBool = false;
            }
            if (!bool.TryParse(allowCanceledBuilds, out var allowCanceledBuildsBool))
            {
                allowCanceledBuildsBool = false;
            }

            if (!bool.TryParse(cleanDestinationFolder, out var cleanDestinationFolderBool))
            {
                cleanDestinationFolderBool = false;
            }

            var resultFilter = GetResultFilter(allowPartiallySucceededBuildsBool, allowFailedBuildsBool, allowCanceledBuildsBool);

            if (!bool.TryParse(extractTars, out var extractTarsBool))
            {
                extractTarsBool = false;
            }

            if (extractTarsBool && PlatformUtil.RunningOnWindows)
            {
                throw new ArgumentException(StringUtil.Loc("TarExtractionNotSupportedInWindows"));
            }

            PipelineArtifactServer server = new PipelineArtifactServer(tracer);
            ArtifactDownloadParameters downloadParameters;

            if (buildType == buildTypeCurrent)
            {
                // TODO: use a constant for project id, which is currently defined in Microsoft.VisualStudio.Services.Agent.Constants.Variables.System.TeamProjectId (Ting)
                string projectIdStr = context.Variables.GetValueOrDefault("system.teamProjectId")?.Value;
                if (String.IsNullOrEmpty(projectIdStr))
                {
                    throw new ArgumentNullException(StringUtil.Loc("CannotBeNullOrEmpty"), "Project ID");
                }

                Guid projectId = Guid.Parse(projectIdStr);
                ArgUtil.NotEmpty(projectId, nameof(projectId));

                int pipelineId = 0;
                if (int.TryParse(environmentBuildId, out pipelineId) && pipelineId != 0)
                {
                    OutputBuildInfo(context, pipelineId);
                }
                else
                {
                    string hostType = context.Variables.GetValueOrDefault("system.hosttype")?.Value;
                    if (string.Equals(hostType, "Release", StringComparison.OrdinalIgnoreCase) ||
                        string.Equals(hostType, "DeploymentGroup", StringComparison.OrdinalIgnoreCase))
                    {
                        throw new InvalidOperationException(StringUtil.Loc("BuildIdIsNotAvailable", hostType ?? string.Empty, hostType ?? string.Empty));
                    }
                    else if (!string.Equals(hostType, "Build", StringComparison.OrdinalIgnoreCase))
                    {
                        throw new InvalidOperationException(StringUtil.Loc("CannotDownloadFromCurrentEnvironment", hostType ?? string.Empty));
                    }
                    else
                    {
                        // This should not happen since the build id comes from build environment. But a user may override that so we must be careful.
                        throw new ArgumentException(StringUtil.Loc("BuildIdIsNotValid", environmentBuildId));
                    }
                }

                downloadParameters = new ArtifactDownloadParameters
                {
                    ProjectRetrievalOptions = BuildArtifactRetrievalOptions.RetrieveByProjectId,
                    ProjectId = projectId,
                    PipelineId = pipelineId,
                    ArtifactName = artifactName,
                    TargetDirectory = targetPath,
                    MinimatchFilters = minimatchPatterns,
                    MinimatchFilterWithArtifactName = true,
                    ParallelizationLimit = int.TryParse(parallelizationLimit, out var parallelLimit) ? parallelLimit : 8,
                    RetryDownloadCount = int.TryParse(retryDownloadCount, out var retryCount) ? retryCount : 4,
                    CheckDownloadedFiles = bool.TryParse(checkDownloadedFiles, out var checkDownloads) && checkDownloads,
                    CustomMinimatchOptions = minimatchOptions,
                    ExtractTars = extractTarsBool,
                    ExtractedTarsTempPath = extractedTarsTempPath
                };
            }
            else if (buildType == buildTypeSpecific)
            {
                if (String.IsNullOrEmpty(projectName))
                {
                    throw new ArgumentNullException(StringUtil.Loc("CannotBeNullOrEmpty"), "Project Name");
                }
                Guid projectId; 
                bool isProjGuid = Guid.TryParse(projectName, out projectId);
                if (!isProjGuid) 
                {
                    projectId = await GetProjectIdAsync(context, projectName);
                }
                // Set the default pipelineId to 0, which is an invalid build id and it has to be reassigned to a valid build id.
                int pipelineId = 0;

                if (bool.TryParse(specificBuildWithTriggering, out var specificBuildWithTriggeringBool) && specificBuildWithTriggeringBool)
                {
                    string hostType = context.Variables.GetValueOrDefault("system.hostType")?.Value;
                    string triggeringPipeline = null;
                    if (!string.IsNullOrWhiteSpace(hostType) && !hostType.Equals("build", StringComparison.OrdinalIgnoreCase)) // RM env.
                    {
                        var releaseAlias = context.Variables.GetValueOrDefault("release.triggeringartifact.alias")?.Value;
                        var definitionIdTriggered = context.Variables.GetValueOrDefault("release.artifacts." + releaseAlias ?? string.Empty + ".definitionId")?.Value;
                        if (!string.IsNullOrWhiteSpace(definitionIdTriggered) && definitionIdTriggered.Equals(definition, StringComparison.OrdinalIgnoreCase))
                        {
                            triggeringPipeline = context.Variables.GetValueOrDefault("release.artifacts." + releaseAlias ?? string.Empty + ".buildId")?.Value;
                        }
                        var triggeredProjectIdStr = context.Variables.GetValueOrDefault("release.artifacts." + releaseAlias + ".projectId")?.Value;
                        if (!string.IsNullOrWhiteSpace(triggeredProjectIdStr) && Guid.TryParse(triggeredProjectIdStr, out var triggeredProjectId))
                        {
                            projectId = triggeredProjectId;
                        }
                    }
                    else
                    {
                        var definitionIdTriggered = context.Variables.GetValueOrDefault("build.triggeredBy.definitionId")?.Value;
                        if (!string.IsNullOrWhiteSpace(definitionIdTriggered) && definitionIdTriggered.Equals(definition, StringComparison.OrdinalIgnoreCase))
                        {
                            triggeringPipeline = context.Variables.GetValueOrDefault("build.triggeredBy.buildId")?.Value;
                        }
                        var triggeredProjectIdStr = context.Variables.GetValueOrDefault("build.triggeredBy.projectId")?.Value;
                        if (!string.IsNullOrWhiteSpace(triggeredProjectIdStr) && Guid.TryParse(triggeredProjectIdStr, out var triggeredProjectId))
                        {
                            projectId = triggeredProjectId;
                        }
                    }

                    if (!string.IsNullOrWhiteSpace(triggeringPipeline))
                    {
                        pipelineId = int.Parse(triggeringPipeline);
                    }
                }

                if (pipelineId == 0)
                {
                    if (buildVersionToDownload == buildVersionToDownloadLatest)
                    {
                        pipelineId = await this.GetPipelineIdAsync(context, definition, buildVersionToDownload, projectId.ToString(), tagsInput, resultFilter, null, cancellationToken: token);
                    }
                    else if (buildVersionToDownload == buildVersionToDownloadSpecific)
                    {
                        bool isPipelineIdNum = Int32.TryParse(userSpecifiedBuildId, out pipelineId);
                        if (!isPipelineIdNum)
                        {
                            throw new ArgumentException(StringUtil.Loc("RunIDNotValid", userSpecifiedBuildId));
                        }
                    }
                    else if (buildVersionToDownload == buildVersionToDownloadLatestFromBranch)
                    {
                        pipelineId = await this.GetPipelineIdAsync(context, definition, buildVersionToDownload, projectId.ToString(), tagsInput, resultFilter, branchName, cancellationToken: token);
                    }
                    else
                    {
                        throw new InvalidOperationException("Unreachable code!");
                    }
                }

                OutputBuildInfo(context, pipelineId);

                downloadParameters = new ArtifactDownloadParameters
                {
                    ProjectRetrievalOptions = BuildArtifactRetrievalOptions.RetrieveByProjectName,
                    ProjectName = projectName,
                    ProjectId = projectId,
                    PipelineId = pipelineId,
                    ArtifactName = artifactName,
                    TargetDirectory = targetPath,
                    MinimatchFilters = minimatchPatterns,
                    MinimatchFilterWithArtifactName = true,
                    ParallelizationLimit = int.TryParse(parallelizationLimit, out var parallelLimit) ? parallelLimit : 8,
                    RetryDownloadCount = int.TryParse(retryDownloadCount, out var retryCount) ? retryCount : 4,
                    CheckDownloadedFiles = bool.TryParse(checkDownloadedFiles, out var checkDownloads) && checkDownloads,
                    CustomMinimatchOptions = minimatchOptions,
                    ExtractTars = extractTarsBool,
                    ExtractedTarsTempPath = extractedTarsTempPath
                };
            }
            else
            {
                throw new InvalidOperationException($"Build type '{buildType}' is not recognized.");
            }

            string fullPath = this.CreateDirectoryIfDoesntExist(targetPath);
            if (cleanDestinationFolderBool)
            {
                CleanDirectory(context, fullPath);
            }
            var downloadOption = downloadType == "single" ? DownloadOptions.SingleDownload : DownloadOptions.MultiDownload;

            // Build artifacts always includes the artifact in the path name
            downloadParameters.IncludeArtifactNameInPath = true;

            // By default, file container provider appends artifact name to target path when downloading specific files.
            // This is undesirable because DownloadBuildArtifactsV0 doesn't do that.
            // We also have a blob to enable appending artifact name just in case we break someone.
            // By default, its value is going to be false, so we're defaulting to V0-like target path resolution.
            downloadParameters.AppendArtifactNameToTargetPath =
                AgentKnobs.EnableIncompatibleBuildArtifactsPathResolution.GetValue(context).AsBoolean();

            context.Output(StringUtil.Loc("DownloadArtifactTo", targetPath));
            await server.DownloadAsyncV2(context, downloadParameters, downloadOption, token);
            context.Output(StringUtil.Loc("DownloadArtifactFinished"));
        }