Github repository to s3 bucket sync and send email with new updates

github_to_s3_sync.sh

#!/bin/bash
#Date		: 13-07-2017
#Owner		: Krishnamurthy Dasari
#Description: Pull the changes from upstreem to local git repository, upload all changes to s3 bucket and send email alert with changed files.

GitLocalRepoDir="/path/to/local/directory"

s3bucket="s3://BucketName"
email_subject="Subject"
email_From="From@domain.com"
email_TO="To@domain.com"

export AWS_ACCESS_KEY_ID="xxxxxxxxxxxxxxx"
export AWS_SECRET_ACCESS_KEY="xxxxxxxxxxxxxxxxxx"

PIDFILE="/opt/scripts/github_s3Bucket_sync.pid"
if [ -e "${PIDFILE}" ] && (ps -p $(cat ${PIDFILE}) > /dev/null); then
  echo "Process is already running. Skipping this run."
  exit 99
fi
echo $$ > ${PIDFILE}


cd $GitLocalRepoDir
git config user.name "Git Username"
git config user.email "Git Email id"
git fetch
git pull
git diff-tree -r ORIG_HEAD.. > /tmp/git-updates.out 2>&1
if [ $? -eq 0 ];
then
  echo "Git pull has been completed.."
  all_files=`cat /tmp/git-updates.out |awk '{print $NF}'`
  files_added=`cat /tmp/git-updates.out |awk '{ if ($5 == "A") print $NF}'`
  files_modified=`cat /tmp/git-updates.out |awk '{ if ($5 == "M") print $NF}'`
  files_deleted=`cat /tmp/git-updates.out |awk '{ if ($5 == "D") print $NF}'`
  if [[ ! -z "$all_files" ]];
  then
    aws s3 sync $GitLocalRepoDir/ $s3bucket/
    echo -e "Below are files added at $s3bucket:  \n\n\n$files_added\n\n\n\
Below are files modified at $s3bucket: \n\n\n$files_modified\n\n\n\
Below are files deleted at github: \n\n\n$files_deleted" | mail -s "$email_subject" -r $email_From $email_TO
  fi
fi

rm $PIDFILE