github-action-push-to-anoth.../entrypoint.sh
2022-07-14 22:04:39 +01:00

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#!/bin/sh -l
set -e # if a command fails it stops the execution
set -u # script fails if trying to access to an undefined variable
echo "[+] Action start"
SOURCE_BEFORE_DIRECTORY="${1}"
SOURCE_DIRECTORY="${2}"
DESTINATION_GITHUB_USERNAME="${3}"
DESTINATION_REPOSITORY_NAME="${4}"
GITHUB_SERVER="${5}"
USER_EMAIL="${6}"
USER_NAME="${7}"
DESTINATION_REPOSITORY_USERNAME="${8}"
TARGET_BRANCH="${9}"
COMMIT_MESSAGE="${10}"
TARGET_DIRECTORY="${11}"
if [ -z "$DESTINATION_REPOSITORY_USERNAME" ]
then
DESTINATION_REPOSITORY_USERNAME="$DESTINATION_GITHUB_USERNAME"
fi
if [ -z "$USER_NAME" ]
then
USER_NAME="$DESTINATION_GITHUB_USERNAME"
fi
# Verify that there (potentially) some access to the destination repository
# and set up git (with GIT_CMD variable) and GIT_CMD_REPOSITORY
if [ -n "${SSH_DEPLOY_KEY:=}" ]
then
echo "[+] Using SSH_DEPLOY_KEY"
# Inspired by https://github.com/leigholiver/commit-with-deploy-key/blob/main/entrypoint.sh , thanks!
mkdir --parents "$HOME/.ssh"
DEPLOY_KEY_FILE="$HOME/.ssh/deploy_key"
echo "${SSH_DEPLOY_KEY}" > "$DEPLOY_KEY_FILE"
chmod 600 "$DEPLOY_KEY_FILE"
SSH_KNOWN_HOSTS_FILE="$HOME/.ssh/known_hosts"
ssh-keyscan -H github.com > "$SSH_KNOWN_HOSTS_FILE"
export GIT_SSH_COMMAND="ssh -i "$DEPLOY_KEY_FILE" -o UserKnownHostsFile=$SSH_KNOWN_HOSTS_FILE"
GIT_CMD_REPOSITORY="git@$GITHUB_SERVER:$DESTINATION_REPOSITORY_USERNAME/$DESTINATION_REPOSITORY_NAME.git"
elif [ -n "${API_TOKEN_GITHUB:=}" ]
then
echo "[+] Using API_TOKEN_GITHUB"
GIT_CMD_REPOSITORY="https://$DESTINATION_REPOSITORY_USERNAME:$API_TOKEN_GITHUB@$GITHUB_SERVER/$DESTINATION_REPOSITORY_USERNAME/$DESTINATION_REPOSITORY_NAME.git"
else
echo "::error::API_TOKEN_GITHUB and SSH_DEPLOY_KEY are empty. Please fill one (recommended the SSH_DEPLOY_KEY)"
exit 1
fi
CLONE_DIR=$(mktemp -d)
echo "[+] Git version"
git --version
echo "[+] Cloning destination git repository $DESTINATION_REPOSITORY_NAME"
# Setup git
git config --global user.email "$USER_EMAIL"
git config --global user.name "$USER_NAME"
{
git clone --single-branch --branch "$TARGET_BRANCH" "$GIT_CMD_REPOSITORY" "$CLONE_DIR"
} || {
echo "::error::Could not clone the destination repository. Command:"
echo "::error::git clone --single-branch --branch $TARGET_BRANCH $GIT_CMD_REPOSITORY $CLONE_DIR"
echo "::error::(Note that if they exist USER_NAME and API_TOKEN is redacted by GitHub)"
echo "::error::Please verify that the target repository exist AND that it contains the destination branch name, and is accesible by the API_TOKEN_GITHUB OR SSH_DEPLOY_KEY"
exit 1
}
ls -la "$CLONE_DIR"
TEMP_DIR=$(mktemp -d)
# This mv has been the easier way to be able to remove files that were there
# but not anymore. Otherwise we had to remove the files from "$CLONE_DIR",
# including "." and with the exception of ".git/"
mv "$CLONE_DIR/.git" "$TEMP_DIR/.git"
# $TARGET_DIRECTORY is '' by default
ABSOLUTE_TARGET_DIRECTORY="$CLONE_DIR/$TARGET_DIRECTORY/"
echo "[+] Deleting $ABSOLUTE_TARGET_DIRECTORY"
rm -rf "$ABSOLUTE_TARGET_DIRECTORY"
echo "[+] Creating (now empty) $ABSOLUTE_TARGET_DIRECTORY"
mkdir -p "$ABSOLUTE_TARGET_DIRECTORY"
echo "[+] Listing Current Directory Location"
ls -al
echo "[+] Listing root Location"
ls -al /
mv "$TEMP_DIR/.git" "$CLONE_DIR/.git"
echo "[+] List contents of $SOURCE_DIRECTORY"
ls "$SOURCE_DIRECTORY"
echo "[+] Checking if local $SOURCE_DIRECTORY exist"
if [ ! -d "$SOURCE_DIRECTORY" ]
then
echo "ERROR: $SOURCE_DIRECTORY does not exist"
echo "This directory needs to exist when push-to-another-repository is executed"
echo
echo "In the example it is created by ./build.sh: https://github.com/cpina/push-to-another-repository-example/blob/main/.github/workflows/ci.yml#L19"
echo
echo "If you want to copy a directory that exist in the source repository"
echo "to the target repository: you need to clone the source repository"
echo "in a previous step in the same build section. For example using"
echo "actions/checkout@v2. See: https://github.com/cpina/push-to-another-repository-example/blob/main/.github/workflows/ci.yml#L16"
exit 1
fi
echo "[+] Copying contents of source repository folder $SOURCE_DIRECTORY to folder $TARGET_DIRECTORY in git repo $DESTINATION_REPOSITORY_NAME"
cp -ra "$SOURCE_DIRECTORY"/. "$CLONE_DIR/$TARGET_DIRECTORY"
cd "$CLONE_DIR"
echo "[+] Files that will be pushed"
ls -la
ORIGIN_COMMIT="https://$GITHUB_SERVER/$GITHUB_REPOSITORY/commit/$GITHUB_SHA"
COMMIT_MESSAGE="${COMMIT_MESSAGE/ORIGIN_COMMIT/$ORIGIN_COMMIT}"
COMMIT_MESSAGE="${COMMIT_MESSAGE/\$GITHUB_REF/$GITHUB_REF}"
echo "[+] Set directory is safe ($CLONE_DIR)"
# Related to https://github.com/cpina/github-action-push-to-another-repository/issues/64 and https://github.com/cpina/github-action-push-to-another-repository/issues/64
# TODO: review before releasing it as a version
git config --global --add safe.directory "$CLONE_DIR"
echo "[+] Adding git commit"
git add .
echo "[+] git status:"
git status
echo "[+] git diff-index:"
# git diff-index : to avoid doing the git commit failing if there are no changes to be commit
git diff-index --quiet HEAD || git commit --message "$COMMIT_MESSAGE"
echo "[+] Pushing git commit"
# --set-upstream: sets de branch when pushing to a branch that does not exist
git push "$GIT_CMD_REPOSITORY" --set-upstream "$TARGET_BRANCH"