setup-amqp-triggers

#!/usr/bin/env bash

set -e -u

# shellcheck source=admin/lib/common.inc.bash
source "$(dirname "${BASH_SOURCE[0]}")/lib/common.inc.bash"

HELP=$(cat <<EOH
Usage: $SCRIPT_NAME <clean|install|uninstall|help>

Commands:
  clean       Remove temporary install scripts and uninstall scripts.
  install     Create database triggers and add uninstall scripts.
  uninstall   Drop database triggers and remove uninstall scripts.
  help        Print this help message
EOH
)

if [ $# -ne 1 ]
then
  echo >&2 "$SCRIPT_NAME: wrong number of arguments"
  echo >&2 "Try '$SCRIPT_NAME help' for usage."
  exit 64 # EX_USAGE
fi

LOCAL_TRIGGERS_DIR="$(dirname "${BASH_SOURCE[0]}")/.setup-amqp-triggers-sql"
REMOTE_TRIGGERS_DIR=/tmp/indexer-sql

case "$1" in
  clean     )
    if ! $DOCKER_COMPOSE_CMD ps musicbrainz | grep -qw 'Up'
    then
      echo >&2 "$SCRIPT_NAME: cannot clean: " \
               "the Docker Compose service 'musicbrainz' is not up"
      echo >&2 "Try '$DOCKER_COMPOSE_CMD up -d musicbrainz' from '$MB_DOCKER_ROOT'"
      exit 69 # EX_UNAVAILABLE
    fi

    echo "Cleaning indexer triggers install/uninstall scripts up ..."

    $DOCKER_COMPOSE_CMD exec musicbrainz rm -frv "$REMOTE_TRIGGERS_DIR"
    rm -frv "$LOCAL_TRIGGERS_DIR"
    ;;
  install   )
    if ! $DOCKER_COMPOSE_CMD ps indexer | grep -qw 'Up'
    then
      echo >&2 "$SCRIPT_NAME: cannot install: " \
               "the Docker Compose service 'indexer' is not up"
      echo >&2 "Try '$DOCKER_COMPOSE_CMD up -d indexer' from '$MB_DOCKER_ROOT'"
      exit 69 # EX_UNAVAILABLE
    fi

    if [ -e "$LOCAL_TRIGGERS_DIR" ]
    then
      echo >&2 "$SCRIPT_NAME: cannot install: file '$LOCAL_TRIGGERS_DIR' exists"
      echo >&2 "Either $SCRIPT_NAME is already running or stopped before its time."
      echo >&2 "Remove this file if you are sure the script is not still running:"
      echo >&2 "    rm -frv $(printf %q "$LOCAL_TRIGGERS_DIR")"
      exit 70 # EX_SOFTWARE
    fi

    if $DOCKER_COMPOSE_CMD exec musicbrainz test -e "$REMOTE_TRIGGERS_DIR"
    then
      echo >&2 "$SCRIPT_NAME: cannot install: file '$REMOTE_TRIGGERS_DIR' exists in 'musicbrainz' docker compose service"
      echo >&2 "Either $SCRIPT_NAME is already running or stopped before its time."
      echo >&2 "Revert partial installation if you are sure the script is not still running:"
      echo >&2 "    $SCRIPT_NAME uninstall"
      exit 70 # EX_SOFTWARE
    fi

    echo "Installing indexer triggers ..."

    $DOCKER_COMPOSE_CMD exec indexer python -m sir triggers

    indexer_container_id="$($DOCKER_COMPOSE_CMD ps -q indexer)"
    $DOCKER_CMD cp "$indexer_container_id":/code/sql "$LOCAL_TRIGGERS_DIR"
    if [ "$(stat -c %U "$LOCAL_TRIGGERS_DIR")" != "$(id -un)" ]
    then
      sudo chown -R "$(id -un):$(id -gn)" "$LOCAL_TRIGGERS_DIR"
    fi

    musicbrainz_container_id="$($DOCKER_COMPOSE_CMD ps -q musicbrainz)"
    $DOCKER_CMD cp "$LOCAL_TRIGGERS_DIR" "$musicbrainz_container_id":"$REMOTE_TRIGGERS_DIR"

    $DOCKER_COMPOSE_CMD exec musicbrainz indexer-triggers.sh "$REMOTE_TRIGGERS_DIR" create

    rm -fr "$LOCAL_TRIGGERS_DIR"
    ;;
  uninstall )
    if ! $DOCKER_COMPOSE_CMD ps musicbrainz | grep -qw 'Up'
    then
      echo >&2 "$SCRIPT_NAME: cannot uninstall: " \
               "the Docker Compose service 'musicbrainz' is not up"
      echo >&2 "Try '$DOCKER_COMPOSE_CMD up -d musicbrainz' from '$MB_DOCKER_ROOT'"
      exit 69 # EX_UNAVAILABLE
    fi

    if $DOCKER_COMPOSE_CMD exec musicbrainz test ! -e "$REMOTE_TRIGGERS_DIR"
    then
      echo >&2 "$SCRIPT_NAME: cannot uninstall: file '$REMOTE_TRIGGERS_DIR' does not exist"
      exit 70 # EX_SOFTWARE
    fi

    echo "Uninstalling indexer triggers ..."

    $DOCKER_COMPOSE_CMD exec musicbrainz indexer-triggers.sh "$REMOTE_TRIGGERS_DIR" drop

    $DOCKER_COMPOSE_CMD exec musicbrainz rm -fr "$REMOTE_TRIGGERS_DIR"
    ;;
  help|-h|--help)
    echo "$HELP"
    exit 0 # EX_OK
    ;;
  *         )
    echo >&2 "$SCRIPT_NAME: unrecognized command '$1'"
  echo >&2 "Try '$SCRIPT_NAME help' for usage."
    exit 64 # EX_USAGE
    ;;
esac

echo "Done."

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