cfbot_patchburner_docker_ctl.sh

#!/bin/sh
#
# This script applies patches inside a docker container.

set -e

TEMPLATE_DIR=patchburner_template
MOUNTED_DIR=patchburner_docker

usage()
{
  echo "Usage: $1 init|create|apply|destroy"
  echo
  echo "init-template -- create 'patchburner_template'"
  echo
  echo "create -- create a new chroot under 'patchburner'"
  echo "apply -- apply all the patches found in patchburner/work/patches'"
  echo "destroy -- destroy 'patchburner' if it exists"
  echo
  echo "template-repo-patch -- report path of template git repo"
  echo "burner-patch-path -- report path where patches should be placed"
  echo "burner-repo-path -- report path of burner git repo"
  exit 1
}

init_template()
{
  # This is just a clean checkout of the git repo, which cfbot will keep
  # updated, and we'll copy whever we need a throw-away copy to apply patches
  # to.  This just avoids having to clone it every time, which would suck.
  # You should only need to init once.
  mkdir $TEMPLATE_DIR
  mkdir $TEMPLATE_DIR/work
  git clone git://git.postgresql.org/git/postgresql.git $TEMPLATE_DIR/work/postgresql
}

destroy_patchburner_if_exists()
{
  rm -fr $MOUNTED_DIR
}

create_patchburner()
{
  # Copy the template to get a clean up-to-date repo.
  cp -r $TEMPLATE_DIR $MOUNTED_DIR

  mkdir $MOUNTED_DIR/work/patches

  docker build . -t cfbot-patchburner --build-arg USER_ID=$(id -u) --build-arg GROUP_ID=$(id -g)
}

apply_patches_in_patchburner()
{
  docker run --mount=type=bind,source=$PWD/$MOUNTED_DIR/work,target=/work --workdir=/work/postgresql -u $(id -u):$(id -g) cfbot-patchburner /usr/local/bin/apply-patches.sh
  rm -rf $MOUNTED_DIR/work/postgresql/.git/hooks
  rm -rf $MOUNTED_DIR/work/postgresql/.git/config
  cp $TEMPLATE_DIR/work/postgresql/.git/config $MOUNTED_DIR/work/postgresql/.git/config
}

case $1 in
  init-template)
    init_template
    ;;
  create)
    create_patchburner
	;;
  destroy)
    destroy_patchburner_if_exists
    ;;
  apply)
    apply_patches_in_patchburner
    ;;
  template-repo-path)
    echo $TEMPLATE_DIR/work/postgresql
    ;;
  burner-patch-path)
    echo $MOUNTED_DIR/work/patches
    ;;
  burner-repo-path)
    echo $MOUNTED_DIR/work/postgresql
    ;;
  *)
    usage
    ;;
esac