#!/bin/bash

set -eux

pacemaker_status=$(systemctl is-active pacemaker)
check_interval=3

function check_resource {

  if [ "$#" -ne 3 ]; then
      echo "ERROR: check_resource function expects 3 parameters, $# given" | tee /dev/fd/2
      exit 1
  fi

  service=$1
  state=$2
  timeout=$3

  if [ "$state" = "stopped" ]; then
      match_for_incomplete='Started'
  else # started
      match_for_incomplete='Stopped'
  fi

  if timeout -k 10 $timeout crm_resource --wait; then
      node_states=$(pcs status --full | grep "$service" | grep -v Clone)
      if echo "$node_states" | grep -q "$match_for_incomplete"; then
          echo "ERROR: cluster settled but $service was not in $state state, exiting." | tee /dev/fd/2
          exit 1
      else
        echo "$service has $state"
      fi
  else
      echo "ERROR: cluster remained unstable for more than $timeout seconds, exiting." | tee /dev/fd/2
      exit 1
  fi

}

# Run if pacemaker is running, we're the bootstrap node,
# and we're updating the deployment (not creating).
if [ "$pacemaker_status" = "active" -a \
     "$(hiera bootstrap_nodeid)" = "$(facter hostname)" -a \
     "$(hiera update_identifier)" != "nil" ]; then

    #ensure neutron constraints like
    #https://review.openstack.org/#/c/245093/
    if  pcs constraint order show  | grep "start neutron-server-clone then start neutron-ovs-cleanup-clone"; then
        pcs constraint remove order-neutron-server-clone-neutron-ovs-cleanup-clone-mandatory
    fi

    pcs resource disable httpd
    check_resource httpd stopped 300
    pcs resource disable openstack-keystone
    check_resource openstack-keystone stopped 1800

    if pcs status | grep haproxy-clone; then
        pcs resource restart haproxy-clone
    fi
    pcs resource restart redis-master
    pcs resource restart mongod-clone
    pcs resource restart rabbitmq-clone
    pcs resource restart memcached-clone
    pcs resource restart galera-master

    pcs resource enable openstack-keystone
    check_resource openstack-keystone started 1800
    pcs resource enable httpd
    check_resource httpd started 800

fi