#!/bin/bash

{{/*
Copyright 2017 The Openstack-Helm Authors.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/}}

set -e

# Extract connection details
RABBIT_HOSTNAME=`echo $RABBITMQ_ADMIN_CONNECTION | awk -F'[@]' '{print $2}' \
  | awk -F'[:/]' '{print $1}'`
RABBIT_PORT=`echo $RABBITMQ_ADMIN_CONNECTION | awk -F'[@]' '{print $2}' \
  | awk -F'[:/]' '{print $2}'`

# Extract Admin User creadential
RABBITMQ_ADMIN_USERNAME=`echo $RABBITMQ_ADMIN_CONNECTION | awk -F'[@]' '{print $1}' \
  | awk -F'[//:]' '{print $4}'`
RABBITMQ_ADMIN_PASSWORD=`echo $RABBITMQ_ADMIN_CONNECTION | awk -F'[@]' '{print $1}' \
  | awk -F'[//:]' '{print $5}'`

function rabbit_find_paritions () {
  PARTITIONS=$(rabbitmqadmin \
    --host="${RABBIT_HOSTNAME}" \
    --port="${RABBIT_PORT}" \
    --username="${RABBITMQ_ADMIN_USERNAME}" \
    --password="${RABBITMQ_ADMIN_PASSWORD}" \
    list nodes -f raw_json | \
  python -c "import json,sys;
obj=json.load(sys.stdin);
for num, node in enumerate(obj):
  print node['partitions'];")

  for PARTITION in ${PARTITIONS}; do
    if [[ $PARTITION != '[]' ]]; then
      echo "Cluster partition found"
      exit 1
    fi
  done
  echo "No cluster partitions found"
}
# Check no nodes report cluster partitioning
rabbit_find_paritions

function rabbit_check_users_match () {
  # Check users match on all nodes
  NODES=$(rabbitmqadmin \
    --host="${RABBIT_HOSTNAME}" \
    --port="${RABBIT_PORT}" \
    --username="${RABBITMQ_ADMIN_USERNAME}" \
    --password="${RABBITMQ_ADMIN_PASSWORD}" \
    list nodes -f bash)
  USER_LIST=$(mktemp --directory)
  for NODE in ${NODES}; do
    rabbitmqadmin \
      --host=${NODE#*@} \
      --port="${RABBIT_PORT}" \
      --username="${RABBITMQ_ADMIN_USERNAME}" \
      --password="${RABBITMQ_ADMIN_PASSWORD}" \
      list users -f bash > ${USER_LIST}/${NODE#*@}
  done
  cd ${USER_LIST}; diff -q --from-file $(ls ${USER_LIST})
  echo "User lists match for all nodes"
}
# Check users match on all nodes
rabbit_check_users_match