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entrypoint.sh
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entrypoint.sh
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#!/bin/bash
set -o pipefail
# config
default_semvar_bump=${DEFAULT_BUMP:-minor}
with_v=${WITH_V:-false}
release_branches=${RELEASE_BRANCHES:-master,main}
custom_tag=${CUSTOM_TAG}
source=${SOURCE:-.}
dryrun=${DRY_RUN:-false}
initial_version=${INITIAL_VERSION:-0.0.0}
tag_context=${TAG_CONTEXT:-repo}
suffix=${PRERELEASE_SUFFIX:-dev}
verbose=${VERBOSE:-true}
cd ${GITHUB_WORKSPACE}/${source}
echo "*** CONFIGURATION ***"
echo -e "\tDEFAULT_BUMP: ${default_semvar_bump}"
echo -e "\tWITH_V: ${with_v}"
echo -e "\tRELEASE_BRANCHES: ${release_branches}"
echo -e "\tCUSTOM_TAG: ${custom_tag}"
echo -e "\tSOURCE: ${source}"
echo -e "\tDRY_RUN: ${dryrun}"
echo -e "\tINITIAL_VERSION: ${initial_version}"
echo -e "\tTAG_CONTEXT: ${tag_context}"
echo -e "\tPRERELEASE_SUFFIX: ${suffix}"
echo -e "\tVERBOSE: ${verbose}"
current_branch=$(git rev-parse --abbrev-ref HEAD)
pre_release="true"
IFS=',' read -ra branch <<< "$release_branches"
for b in "${branch[@]}"; do
echo "Is $b a match for ${current_branch}"
if [[ "${current_branch}" =~ $b ]]
then
pre_release="false"
fi
done
echo "pre_release = $pre_release"
# fetch tags
git fetch --tags
# get latest tag that looks like a semver (with or without v)
case "$tag_context" in
*repo*)
tag=$(git for-each-ref --sort=-v:refname --format '%(refname:lstrip=2)' | grep -E "^v?[0-9]+\.[0-9]+\.[0-9]+$" | head -n1)
pre_tag=$(git for-each-ref --sort=-v:refname --format '%(refname:lstrip=2)' | grep -E "^v?[0-9]+\.[0-9]+\.[0-9]+(-$suffix\.[0-9]+)?$" | head -n1)
;;
*branch*)
tag=$(git tag --list --merged HEAD --sort=-v:refname | grep -E "^v?[0-9]+\.[0-9]+\.[0-9]+$" | head -n1)
pre_tag=$(git tag --list --merged HEAD --sort=-v:refname | grep -E "^v?[0-9]+\.[0-9]+\.[0-9]+(-$suffix\.[0-9]+)?$" | head -n1)
;;
* ) echo "Unrecognised context"; exit 1;;
esac
# if there are none, start tags at INITIAL_VERSION which defaults to 0.0.0
if [ -z "$tag" ]
then
log=$(git log --pretty='%B')
tag="$initial_version"
pre_tag="$initial_version"
else
log=$(git log $tag..HEAD --pretty='%B')
fi
# get current commit hash for tag
tag_commit=$(git rev-list -n 1 $tag)
# get current commit hash
commit=$(git rev-parse HEAD)
if [ "$tag_commit" == "$commit" ]; then
echo "No new commits since previous tag. Skipping..."
echo ::set-output name=tag::$tag
exit 0
fi
# echo log if verbose is wanted
if $verbose
then
echo $log
fi
case "$log" in
*#major* ) new=$(semver -i major $tag); part="major";;
*#minor* ) new=$(semver -i minor $tag); part="minor";;
*#patch* ) new=$(semver -i patch $tag); part="patch";;
*#none* )
echo "Default bump was set to none. Skipping..."; echo ::set-output name=new_tag::$tag; echo ::set-output name=tag::$tag; exit 0;;
* )
if [ "$default_semvar_bump" == "none" ]; then
echo "Default bump was set to none. Skipping..."; echo ::set-output name=new_tag::$tag; echo ::set-output name=tag::$tag; exit 0
else
new=$(semver -i "${default_semvar_bump}" $tag); part=$default_semvar_bump
fi
;;
esac
if $pre_release
then
# Already a prerelease available, bump it
if [[ "$pre_tag" == *"$new"* ]]; then
new=$(semver -i prerelease $pre_tag --preid $suffix); part="pre-$part"
else
new="$new-$suffix.1"; part="pre-$part"
fi
fi
echo $part
# did we get a new tag?
if [ ! -z "$new" ]
then
# prefix with 'v'
if $with_v
then
new="v$new"
fi
fi
if [ ! -z $custom_tag ]
then
new="$custom_tag"
fi
if $pre_release
then
echo -e "Bumping tag ${pre_tag}. \n\tNew tag ${new}"
else
echo -e "Bumping tag ${tag}. \n\tNew tag ${new}"
fi
# set outputs
echo ::set-output name=new_tag::$new
echo ::set-output name=part::$part
# use dry run to determine the next tag
if $dryrun
then
echo ::set-output name=tag::$tag
exit 0
fi
echo ::set-output name=tag::$new
# create local git tag
git tag $new
# push new tag ref to github
dt=$(date '+%Y-%m-%dT%H:%M:%SZ')
full_name=$GITHUB_REPOSITORY
git_refs_url=$(jq .repository.git_refs_url $GITHUB_EVENT_PATH | tr -d '"' | sed 's/{\/sha}//g')
echo "$dt: **pushing tag $new to repo $full_name"
git_refs_response=$(
curl -s -X POST $git_refs_url \
-H "Authorization: token $GITHUB_TOKEN" \
-d @- << EOF
{
"ref": "refs/tags/$new",
"sha": "$commit"
}
EOF
)
git_ref_posted=$( echo "${git_refs_response}" | jq .ref | tr -d '"' )
echo "::debug::${git_refs_response}"
if [ "${git_ref_posted}" = "refs/tags/${new}" ]; then
exit 0
else
echo "::error::Tag was not created properly."
exit 1
fi