Bdtjtk

This question spun out of this one. Now that I have a better understanding of what was going wrong there, and a workable, if imperfect, solution, I'm submitting a more focused follow-up (I'm still something of a novice at StackOverflow - please let me know if this contravenes etiquette, and I should follow-up on the original).

This page suggests that "You use AWS CodeBuild to build, locally test, and package your serverless application". However, when I include a sam build command in my buildspec.yml, I get the following log output, suggesting that sam is not installed on CodeBuild images:

[Container] 2018/12/31 11:41:49 Running command sam build --use-container 

sh: 1: sam: not found 



[Container] 2018/12/31 11:41:49 Command did not exit successfully sam build --use-container exit status 127 

[Container] 2018/12/31 11:41:49 Phase complete: BUILD Success: false 

[Container] 2018/12/31 11:41:49 Phase context status code: COMMAND_EXECUTION_ERROR Message: Error while executing command: sam build --use-container. Reason: exit status 127 

Furthermore, if I install SAM with pip install aws-sam-cli, running sam build --use-container in CodeBuild gives an error. sam build itself succeeds, but since it doesn't install test dependencies, I'd still need to use pip install -r tests/requirements-test.txt -t . to be able to run tests in CodeBuild. Moreover, this suggests that --use-container is required for "packages that have natively compiled programs").

This makes me wonder whether I'm trying to do something wrong. What's the recommended way of building SAM services in a CI/CD workflow on AWS?

Please see below for buildspec.yaml that works for me when using AWS SAM with AWS CodeBuild, with cloudformation.yml

phases:

  build:

    commands:

      - pip install --user aws-sam-cli

      - USER_BASE_PATH=$(python -m site --user-base)

      - export PATH=$PATH:$USER_BASE_PATH/bin

      - sam build -t cloudformation.yml

      - aws cloudformation package --template-file .aws-sam/build/template.yaml --s3-bucket <TARGET_S3_BUCKET> --output-template-file cloudformation-packaged.yaml

      - aws s3 cp ./cloudformation-packaged.yaml <TARGET_S3_BUCKET>/cloudformation-packaged.yaml   

In the result I get a deployment package and packaged cloudformation template in the TARGET_S3_BUCKET.

For each function in the ./src folder, I have a requirements.txt file that includes all the dependencies, but I dont run pip install -r requirements.txt manually.