e54bcbb815
The previous approach causes problems when there are e.g. newlines in the pull request body. Also, the `draft` parameter was previously passed as a JSON string (`"draft": "true"` and `"draft": "false"`, as opposed to `"draft": true` and `"draft": false`), which I suspect is just a bug.
151 lines
5.1 KiB
Bash
Executable File
151 lines
5.1 KiB
Bash
Executable File
#!/bin/bash
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# Suggested by Github actions to be strict
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set -e
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set -o pipefail
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################################################################################
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# Global Variables (we can't use GITHUB_ prefix)
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################################################################################
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API_VERSION=v3
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BASE=https://api.github.com
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AUTH_HEADER="Authorization: token ${GITHUB_TOKEN}"
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HEADER="Accept: application/vnd.github.${API_VERSION}+json"
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HEADER="${HEADER}; application/vnd.github.antiope-preview+json; application/vnd.github.shadow-cat-preview+json"
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# URLs
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REPO_URL="${BASE}/repos/${GITHUB_REPOSITORY}"
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PULLS_URL=$REPO_URL/pulls
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################################################################################
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# Helper Functions
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################################################################################
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check_credentials() {
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if [[ -z "${GITHUB_TOKEN}" ]]; then
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echo "You must include the GITHUB_TOKEN as an environment variable."
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exit 1
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fi
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}
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check_events_json() {
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if [[ ! -f "${GITHUB_EVENT_PATH}" ]]; then
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echo "Cannot find Github events file at ${GITHUB_EVENT_PATH}";
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exit 1;
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fi
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echo "Found ${GITHUB_EVENT_PATH}";
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}
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create_pull_request() {
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# JSON strings
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SOURCE="$(echo -n "${1}" | jq --raw-input --slurp ".")" # from this branch
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TARGET="$(echo -n "${2}" | jq --raw-input --slurp ".")" # pull request TO this target
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BODY="$(echo -n "${3}" | jq --raw-input --slurp ".")" # this is the content of the message
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TITLE="$(echo -n "${4}" | jq --raw-input --slurp ".")" # pull request title
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# JSON boolean
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if [[ "${5}" == "true" ]]; then # if PRs are draft
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DRAFT="true";
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else
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DRAFT="false";
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fi
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# Check if the branch already has a pull request open
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DATA="{\"base\":${TARGET}, \"head\":${SOURCE}, \"body\":${BODY}}"
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RESPONSE=$(curl -sSL -H "${AUTH_HEADER}" -H "${HEADER}" --user "${GITHUB_ACTOR}" -X GET --data "${DATA}" ${PULLS_URL})
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PR=$(echo "${RESPONSE}" | jq --raw-output '.[] | .head.ref')
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echo "Response ref: ${PR}"
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# Option 1: The pull request is already open
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if [[ "${PR}" == "${SOURCE}" ]]; then
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echo "Pull request from ${SOURCE} to ${TARGET} is already open!"
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# Option 2: Open a new pull request
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else
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# Post the pull request
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DATA="{\"title\":${TITLE}, \"body\":${BODY}, \"base\":${TARGET}, \"head\":${SOURCE}, \"draft\":${DRAFT}}"
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echo "curl --user ${GITHUB_ACTOR} -X POST --data ${DATA} ${PULLS_URL}"
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curl -sSL -H "${AUTH_HEADER}" -H "${HEADER}" --user "${GITHUB_ACTOR}" -X POST --data "${DATA}" ${PULLS_URL}
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echo $?
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fi
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}
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main () {
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# path to file that contains the POST response of the event
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# Example: https://github.com/actions/bin/tree/master/debug
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# Value: /github/workflow/event.json
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check_events_json;
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# User specified branch to PR to, and check
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if [ -z "${BRANCH_PREFIX}" ]; then
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echo "No branch prefix is set, all branches will be used."
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BRANCH_PREFIX=""
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echo "Branch prefix is $BRANCH_PREFIX"
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fi
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if [ -z "${PULL_REQUEST_BRANCH}" ]; then
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PULL_REQUEST_BRANCH=master
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fi
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echo "Pull requests will go to ${PULL_REQUEST_BRANCH}"
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if [ -z "${PULL_REQUEST_DRAFT}" ]; then
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echo "No explicit preference for draft PR: created PRs will be normal PRs."
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PULL_REQUEST_DRAFT="false"
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else
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echo "Environment variable PULL_REQUEST_DRAFT set to a value: created PRs will be draft PRs."
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PULL_REQUEST_DRAFT="true"
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fi
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# Get the name of the action that was triggered
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BRANCH=$(jq --raw-output .ref "${GITHUB_EVENT_PATH}");
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BRANCH=$(echo "${BRANCH/refs\/heads\//}")
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echo "Found branch $BRANCH"
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# If it's to the target branch, ignore it
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if [[ "${BRANCH}" == "${PULL_REQUEST_BRANCH}" ]]; then
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echo "Target and current branch are identical (${BRANCH}), skipping."
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else
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# If the prefix for the branch matches
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if [[ $BRANCH == ${BRANCH_PREFIX}* ]]; then
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# Ensure we have a GitHub token
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check_credentials
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# Pull request body (optional)
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if [ -z "${PULL_REQUEST_BODY}" ]; then
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echo "No pull request body is set, will use default."
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PULL_REQUEST_BODY="This is an automated pull request to update the container collection ${BRANCH}"
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fi
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echo "Pull request body is ${PULL_REQUEST_BODY}"
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# Pull request title (optional)
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if [ -z "${PULL_REQUEST_TITLE}" ]; then
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echo "No pull request title is set, will use default."
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PULL_REQUEST_TITLE="Update container ${BRANCH}"
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fi
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echo "Pull request title is ${PULL_REQUEST_TITLE}"
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create_pull_request "${BRANCH}" "${PULL_REQUEST_BRANCH}" "${PULL_REQUEST_BODY}" "${PULL_REQUEST_TITLE}" "${PULL_REQUEST_DRAFT}"
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fi
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fi
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}
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echo "==========================================================================
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START: Running Pull Request on Branch Update Action!";
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main;
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echo "==========================================================================
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END: Finished";
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