git_sync

#!/bin/bash

SCRIPT_PATH=`realpath ${0}`
SCRIPT_DIR=`dirname ${SCRIPT_PATH}`
PHYSEVT_DIR=`realpath ${SCRIPT_DIR}`
LOG_DIR="${PHYSEVT_DIR}/log"
LOGFILE="${LOG_DIR}/git_sync.log"

# Send emails
function send_email {
for RECIPIENT in $(pts membership fccsw:access | tail -n +2); do
  RECIPIENTS="${RECIPIENTS},${RECIPIENT}"
  ADDRESSES="${ADDRESSES} ${RECIPIENT}@cern.ch"
done

RECIPIENTS="${RECIPIENTS:1}"
ADDRESSES="${ADDRESSES:1}"

read -r -d '' MESSAGE << EOM
Hello ${RECIPIENTS},

The FCC Physics Events website encountered an issue:

${1}
EOM

mail -s "FCC Physics Events Website" ${ADDRESSES} <<< "${MESSAGE}"
}


# Prepare log file
echo > "${LOGFILE}"

echo "`date`  INFO: Syncing with git server in progress..." >> "${LOGFILE}"

SYNCLOCK="${PHYSEVT_DIR}/.sync.lock"
# Making sure the last sync went OK and there is no .sync.lock file left
if [ -f "${SYNCLOCK}" ]; then
  echo "`date`  WARNING: Encountered git sync lock. Aborting..." >> "${LOGFILE}"

  if [ `find "${SYNCLOCK}" -mmin +720` ]; then
    send_email "Git sync lock too old, please check the logs and possibly remove the lock file: ${SYNCLOCK}"

    exit 3
  fi

  exit 0
fi

# Create sync lock
touch "${SYNCLOCK}"

cd "${PHYSEVT_DIR}"

if [ -n "$(git status --untracked-files=no --porcelain)" ]; then
  echo "`date`  ERROR: Git tree contains uncommited changes. Aborting..." >> "${LOGFILE}"
  send_email "Git tree contains uncommited changes, please clear or commit them!"$'\n\n'"$(git status)"

  exit 3
fi

git pull 2>&1 >> "${LOGFILE}"

if [ "$(git rev-parse main)" != "$(git rev-parse origin/main)" ]; then
  echo "`date`  ERROR: Git pull did not succeeded. Aborting..." >> "${LOGFILE}"
  send_email "Git pull did not succeeded. Status of the repository:"$'\n\n'"$(git status)"

  exit 3
fi

# Clear sync lock
rm -rf "${SYNCLOCK}"

echo "`date`  INFO: Syncing with git server finished." >> "${LOGFILE}"