如何从 CDK 上的 CodePipeline 获取源工件？

我正在使用官方 AWS 文档来使用 CDK 创建管道：https://docs.aws.amazon.com/cdk/latest/guide/cdk_pipeline.html#cdk_pipeline_define https://docs.aws.amazon.com/cdk/latest/guide/cdk_pipeline.html#cdk_pipeline_define（与文档略有不同，我使用了 CodeStar 连接，正如代码注释所建议的那样）

这会自动创建一个自变异管道，具有三个阶段：Source、Synth 和 UpdatePipeline。那太棒了。

我想添加一个带有 CodeBuild 操作的新阶段。我希望 CodeBuild 操作基于源目录中的 buildspec.yml 文件。

在控制台上，我可以通过单击“添加新阶段”、“添加操作”并从下拉菜单中选择输入工件来轻松完成此操作。

然而，在 CDK 上，使用推荐的设置并没有简单的方法来访问输入工件。

我通过强迫设法做到了buildPipeline()并这样做：

import * as cdk from "@aws-cdk/core";
import {
  CodePipeline,
  ShellStep,
  CodePipelineSource,
} from "@aws-cdk/pipelines";
import * as codebuild from "@aws-cdk/aws-codebuild";
import * as codepipelineActions from "@aws-cdk/aws-codepipeline-actions";


export class PipelineStack extends cdk.Stack {
  public readonly source: cdk.CfnOutput

  constructor(scope: cdk.Construct, id: string, props?: cdk.StackProps) {
    super(scope, id, props);

    const source = CodePipelineSource.connection("someuser/somerepo", "master", {
      connectionArn: "arn:aws:codestar-connections:us-east-1:REDACTED:connection/REDACTED"
    });

    const synthShellStep = new ShellStep("Synth", {
      input: source,
      commands: [
          "cd infrastructure",
          "npm run ci",
          "npm run build",
          "npx cdk synth"
      ],
      "primaryOutputDirectory": "infrastructure/cdk.out"
    });

    const pipeline = new CodePipeline(this, "Pipeline", {
      pipelineName: "FancyPipeline",
      synth: synthShellStep
    });

    // Need to build the pipeline to access the
    // source artifact
    pipeline.buildPipeline();

    const sourceStage = pipeline.pipeline.stage("Source");
    if (sourceStage) {
      const sourceOutputs = sourceStage.actions[0].actionProperties.outputs;
      if (sourceOutputs && sourceOutputs.length > 0) {
        const sourceArtifact = sourceOutputs[0];


        const codeBuildProject = new codebuild.PipelineProject(this, 'DockerBuildProject', {
          environment: {
            privileged: true
          }
        });

        const buildAction = new codepipelineActions.CodeBuildAction({
          actionName: 'DockerBuild',
          project: codeBuildProject,
          input: sourceArtifact,
          environmentVariables: {
            AWS_DEFAULT_REGION: {
              value: this.region
            },
            AWS_ACCOUNT_ID: {
              value: this.account
            },
            IMAGE_REPO_NAME: {
              value: "somereponame"
            },
            IMAGE_TAG: {
              value: "latest"
            }
          }
        });

        pipeline.pipeline.addStage({
          stageName: "DockerBuildStage",
          actions: [buildAction],
        });
      }
    }
  }
}

但这总体感觉很尴尬，而且我无法打电话addStage() on the CodePipeline不再建造。当然有更好的方法来做我想做的事情吗？

任何帮助/建议将不胜感激。谢谢。

The codepipelineActions.CodeBuildAction方法接受一个名为outputs这是此操作的输出工件列表。 TypeScript 源here https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_codepipeline.ActionProperties.html。我认为在文档的 python 版本中更容易理解（链接here https://docs.aws.amazon.com/cdk/api/v2/python/aws_cdk.aws_codepipeline_actions/CodeBuildAction.html).