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path: root/scripts/sync-stable-branch.sh
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#!/usr/bin/env bash

# This script triggers a merge train job to sync an EE stable branch to its
# corresponding CE stable branch.

set -e

if [[ "$MERGE_TRAIN_TRIGGER_TOKEN" == '' ]]
then
  echo 'The variable MERGE_TRAIN_TRIGGER_TOKEN must be set to a non-empty value'
  exit 1
fi

if [[ "$MERGE_TRAIN_TRIGGER_URL" == '' ]]
then
  echo 'The variable MERGE_TRAIN_TRIGGER_URL must be set to a non-empty value'
  exit 1
fi

if [[ "$CI_COMMIT_REF_NAME" == '' ]]
then
  echo 'The variable CI_COMMIT_REF_NAME must be set to a non-empty value'
  exit 1
fi

if [[ "$SOURCE_PROJECT" == '' ]]
then
  echo 'The variable SOURCE_PROJECT must be set to a non-empty value'
  exit 1
fi

if [[ "$TARGET_PROJECT" == '' ]]
then
  echo 'The variable TARGET_PROJECT must be set to a non-empty value'
  exit 1
fi

if [[ "$TARGET_PROJECT" != "gitlab-org/gitlab-foss" ]]
then
  echo 'This is a security FOSS merge train'
  echo "Checking if $CI_COMMIT_SHA is available on canonical"

  gitlab_com_commit_status=$(curl -s "https://gitlab.com/api/v4/projects/278964/repository/commits/$CI_COMMIT_SHA" | jq -M .status)

  if [[ "$gitlab_com_commit_status" != "null" ]]
  then
    echo 'Commit available on canonical, skipping merge train'
    exit 0
  fi

  echo 'Commit not available, triggering a merge train'
fi

curl -f \
  -X POST \
  -F token="$MERGE_TRAIN_TRIGGER_TOKEN" \
  -F ref=master \
  -F "variables[MERGE_FOSS]=1" \
  -F "variables[SOURCE_BRANCH]=$CI_COMMIT_REF_NAME" \
  -F "variables[TARGET_BRANCH]=${CI_COMMIT_REF_NAME/-ee/}" \
  -F "variables[SOURCE_PROJECT]=$SOURCE_PROJECT" \
  -F "variables[TARGET_PROJECT]=$TARGET_PROJECT" \
  "$MERGE_TRAIN_TRIGGER_URL"