Call AWS CodeBuild project from CodePipeline with different parameters

Question

Let's imagine that we have one CodePipeline with 2 stages in the following fashion:

new codepipeline.Pipeline(this, name + "Pipeline", {
    pipelineName: this.projectName + "-" + name,
    crossAccountKeys: false,
    stages: [{
        stageName: 'Source',
        actions: [codeCommitSourceAction]
    },{
        stageName: 'Build',
        actions: [buildAction]
    }]
});

Here the Source stage is where we pull the changes from the repository and the Build one is a CodeBuild project which has the following actions in the buildspec file:

Install the dependencies (npm i).
Run the tests (npm run test).
Pack the project (npm run pack).
Update/deploy lambda function (aws lambda update-function-code).

In general it does what it supposed to do, however, if the build fails, the only way to find out, which part has failed, is to look to the logs. I would like that it is seen straight from CodePipeline. In this case CodePipeline must have more stages which correlate with each action from CodeBuild. Based on my experience I can do it if for every stage I provide different CodeBuild project.

Question: can I provide same CodeBuild project to the different CodePipeline stages so, that it will execute only part of buildspec file (for example, only running the tests)?

kichik · Accepted Answer · 2021-12-24 04:14:52Z

1

You can have your buildspec.yml perform different actions based on environment variables. You can then pass different environment variables to CodeBuildAction with environmentVariables.

new codepipeline_actions.CodeBuildAction({
  actionName: 'Build',
  project: buildProject,
  input: sourceInput,
  runOrder: 1,
  environmentVariables: {
    STEP: { value: 'test' }
  }
}),

And then check STEP environment variable in buildspec.yml.

answered Dec 24, 2021 at 4:14

kichik

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1 Comment

Rufi Over a year ago

yes, that worked, thanks! In case somebody searched how to use environment variable in JSON format, it is here: stackoverflow.com/questions/62881332/…

Mornor · Accepted Answer · 2021-12-22 09:41:45Z

0

Question: can I provide same CodeBuild project to the different CodePipeline stages so, that it will execute only part of buildspec file (for example, only running the tests)?

No, I don't think that is possible.

What you can do however, is to have different buildspecs.yml file called at different stages of your pipeline.

For example, you could have a Codepipeline stage called Init which will call the builspec_init.yml of your project. If that succeed, you could have a following state Apply calling the buildspec_apply.yml file of your project.

answered Dec 22, 2021 at 9:41

Mornor

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