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entrypoint.sh
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entrypoint.sh
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#!/bin/bash
# config
default_semvar_bump=${DEFAULT_BUMP:-patch}
with_v=${WITH_V:-true}
release_branches=${RELEASE_BRANCHES:-main}
custom_tag=${CUSTOM_TAG}
source=${SOURCE:-.}
dryrun=${DRY_RUN:-false}
initial_version=${INITIAL_VERSION:-0.0.0}
cd ${GITHUB_WORKSPACE}/${source}
current_branch=$(git rev-parse --abbrev-ref HEAD)
pre_release="true"
current_branch=${GITHUB_REF#'refs/heads/'}
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 = $pre_release"
# Mark the directory as safe so git will fetch tags
git config --global --add safe.directory /github/workspace
# fetch tags
git fetch --tags
# get latest tag that looks like a semver (with or without v)
tag=$(git for-each-ref --sort=-v:refname --count=1 --format '%(refname)' refs/tags/[0-9]*.[0-9]*.[0-9]* refs/tags/v[0-9]*.[0-9]*.[0-9]* | cut -d / -f 3-)
tag_commit=$(git rev-list -n 1 $tag)
# get current commit hash for tag
commit=$(git rev-parse HEAD)
total_commits=$(git rev-list --count HEAD)
if [ "$tag_commit" == "$commit" ]; then
echo "No new commits since previous tag. Skipping..."
echo "tag=$tag" >> $GITHUB_OUTPUT
echo "new_tag=$tag" >> $GITHUB_OUTPUT
exit 0
fi
# if there are none, start tags at INITIAL_VERSION which defaults to 0.0.0
if [ -z "$tag" ]
then
log=$(git log --pretty='%B')
tag="$initial_version"
else
log=$(git log $tag..HEAD --pretty='%B')
fi
echo $log
# this will bump the semvar using the default bump level,
# or it will simply pass if the default was "none"
function default-bump {
if [ "$default_semvar_bump" == "none" ]; then
echo "Default bump was set to none. Skipping..."
exit 0
else
semver bump "${default_semvar_bump}" $tag
fi
}
# get commit logs and determine home to bump the version
# supports #major, #minor, #patch (anything else will be 'minor')
case "$log" in
*#major* ) new=$(semver bump major $tag); part="major";;
*#minor* ) new=$(semver bump minor $tag); part="minor";;
*#patch* ) new=$(semver bump patch $tag); part="patch";;
* ) new=$(default-bump); part=$default_semvar_bump;;
esac
echo $part
# did we get a new tag?
if [ ! -z "$new" ]
then
# prefix with 'v'
if $with_v
then
new="v$new"
fi
if $pre_release
then
# Based on pre-existing Viostream tagging scheme
new="$new-f.$total_commits-$current_branch"
fi
fi
if [ ! -z $custom_tag ]
then
new="$custom_tag"
fi
echo $new
# set outputs
echo "new_tag=$new" >> $GITHUB_OUTPUT
echo "part=$part" >> $GITHUB_OUTPUT
# use dry run to determine the next tag
if $dryrun
then
echo "tag=$tag" >> $GITHUB_OUTPUT
exit 0
fi
echo "tag=$new" >> $GITHUB_OUTPUT
if $pre_release
then
echo "This branch is not a release branch. Skipping the tag creation."
exit 0
fi
# push new tag ref to github
dt=$(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"
curl -s -X POST $git_refs_url \
-H "Authorization: token $GITHUB_TOKEN" \
-d @- << EOF
{
"ref": "refs/tags/$new",
"sha": "$commit"
}
EOF