Code build continues after build fails

问题

I'm building a CI/CD pipeline using git, codebuild and elastic beanstalk.

During codebuild execution when build fails due to syntax error of a test case, I see codebuild progress to next stage and ultimatly go on to produce the artifacts.

My understanding was if the build fails, execution should stop. is this a correct behavior ?

Please see the buildspec below.

version: 0.2

phases:
  install:
    commands:
      - echo Installing package.json..
      - npm install
      - echo Installing Mocha...
      - npm install -g mocha
  pre_build:
    commands:
      - echo Installing source NPM placeholder dependencies...
  build:
    commands:
      - echo Build started on `date`
      - echo Compiling the Node.js code
      - mocha modules/**/tests/*.js
  post_build:
    commands:
      - echo Build completed on `date`
artifacts:
  files:
    - modules/*
    - node_modules/*
    - package.json
    - config/*
    - server.js

回答1:

CodeBuild detects build failures by exit codes. You should ensure that your test execution returns a non-zero exit code on failure.

POST_BUILD will always run as long as BUILD was also run (regardless of BUILD's success or failure.) The same goes for UPLOAD_ARTIFACTS. This is so you can retrieve debug information/artifacts.

If you want to do something different in POST_BUILD depending on the success or failure of BUILD, you can test the builtin environment variable CODEBUILD_BUILD_SUCCEEDING, which is set to 1 if BUILD succeeded, and 0 if it failed.

回答2:

CodeBuild uses the environment variable CODEBUILD_BUILD_SUCCEEDING to show if the build process seems to go right.

the best way I found right now is to create a small script in the install secion and then alway use this like:

phases:
  install:
    commands:
      - echo '#!/bin/bash' > /usr/local/bin/ok; echo 'if [[ "$CODEBUILD_BUILD_SUCCEEDING" == "0" ]]; then exit 1; else exit 0; fi' >> /usr/local/bin/ok; chmod +x /usr/local/bin/ok
  post_build:
    commands:
      - ok && echo Build completed on `date`

回答3:

The post_build stage will be executed and the artifacts will be produced. The post_build is good to properly shut down the build environment, if necessary, and the artifacts could be useful even if the build failed. E.g. extra logs, intermediate files, etc.

I would suggest to use post_build only for commands what are agnostic to the result of your build, and properly de-initialise the build environment. Otherwise you can just exclude that step.

来源：https://stackoverflow.com/questions/46584324/code-build-continues-after-build-fails