Created
August 30, 2019 09:26
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Save Skitionek/0ec84a7d70436bde635e14661779cf87 to your computer and use it in GitHub Desktop.
As filename says - useful to skip build stage in deployment pipeline
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| #!/usr/bin/env bash | |
| #source :https://stackoverflow.com/questions/57006043/get-the-git-commit-hash-of-the-last-commit-which-affected-files-not-listed-in-a | |
| #maintain :Dominik Maszczyk | |
| #date :2019-07-31 | |
| #email :Skitionek@gmail.com | |
| #============================================================================== | |
| DIR=$(mktemp -d) | |
| pushd $DIR > /dev/null | |
| # Set up a temporary git repository so we can use | |
| # git check-ignore with .dockerignore | |
| git init > /dev/null | |
| popd > /dev/null | |
| cp .dockerignore $DIR/.gitignore 2> /dev/null | |
| for commit in $(git log --pretty=%h) | |
| do | |
| # Get the changed file names for the commit. | |
| # Use `sed 1d` to remove the first line, which is the commit description | |
| files=$(git show $commit --oneline --name-only | sed 1d) | |
| pushd $DIR > /dev/null | |
| for file in $files | |
| do | |
| match=$(git check-ignore $file -v) | |
| # Store the error code | |
| ERROR=$? | |
| if [ $ERROR -gt 0 ] || [[ -z $match ]] || [[ $match == *:!* ]] | |
| then | |
| popd > /dev/null | |
| rm -rf $DIR | |
| echo $commit | |
| exit 0 | |
| fi | |
| done | |
| popd > /dev/null | |
| done | |
| rm -rf $DIR | |
| exit $ERROR | |
| exit 1 | |
| # Example - determine image tag for Jenkins: | |
| # def lastCommitAffectingDockerImage = sh(script: './lastCommitAffectingDockerImage.sh', returnStdout: true).trim() | |
| # def tagOrHash = sh(script: "git describe ${lastCommitAffectingDockerImage} --tags 2> /dev/null || echo ${lastCommitAffectingDockerImage}", returnStdout: true).trim() |
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