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generate_matrix.sh
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generate_matrix.sh
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#!/bin/bash
set -eu -o pipefail
CHANGED_DIRS=$(git diff-tree --no-commit-id --name-only -r "${GITHUB_SHA}" '*Dockerfile' '*go.mod' | xargs -I {} dirname {} | uniq)
# for pull requests we have to compare with main branch
if [[ "${GITHUB_EVENT_NAME}" == "pull_request" ]]; then
git fetch --depth=2 origin main
CHANGED_DIRS="$(git --no-pager diff --name-only "${GITHUB_SHA}" "$(git merge-base "${GITHUB_SHA}" FETCH_HEAD)" '*Dockerfile' '*go.mod' | xargs -I {} dirname {} | uniq)"
fi
MATRIX_PROJECTS_JSON="["
MATRIX_INCLUDE_JSON="["
for DIR in ${CHANGED_DIRS}; do
MATRIX_PROJECTS_JSON+=$(sed 's/^/"/;s/$/"/' <<< "${DIR}")
DOCKERFILE="${DIR}/Dockerfile"
pushd .
cd "${DIR}"
source version.sh
popd
MATRIX_INCLUDE_JSON+="{\"project\": \"${DIR}\", \"dockerfile\": \"${DOCKERFILE}\", \"version\": \"${VERSION}\"}"
done
MATRIX_INCLUDE_JSON="${MATRIX_INCLUDE_JSON//\}\{/\}, \{}"
MATRIX_INCLUDE_JSON+="]"
MATRIX_PROJECTS_JSON="${MATRIX_PROJECTS_JSON//\"\"/\", \"}"
MATRIX_PROJECTS_JSON+="]"
MATRIX_JSON="{\"projects\": ${MATRIX_PROJECTS_JSON}, \"include\": ${MATRIX_INCLUDE_JSON}}"
echo "${MATRIX_JSON}"
CONTINUE_DOCKER_JOB="no"
if [[ "${MATRIX_PROJECTS_JSON}" != "[]" ]]; then
CONTINUE_DOCKER_JOB="yes"
fi
echo "::set-output name=continue::${CONTINUE_DOCKER_JOB}"
echo "::set-output name=matrix::${MATRIX_JSON}"