#!/bin/bash
{{/*

# Copyright © 2018 Amdocs
#
# 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.
*/}}

LOGFILE="/app/geo.log"
enableDebugLogging=true
message_router=message-router:3904
topic={{.Values.config.messageRouterTopic}}
KEYWORD_success="success"
KEYWORD_failure="failure"
SITE_NAME="sdnc01"
if [ "$SDNC_IS_PRIMARY_CLUSTER" = "false" ];then
  SITE_NAME="sdnc02"
fi

APP_BIN=/app/bin

debugLog(){
  if [ "$enableDebugLogging" == true ]; then
     if [ $# -eq 0 ]; then
       echo "" >> $LOGFILE
     else
       echo $( date ) $@ >> $LOGFILE
    fi
  fi
}

EXC_SIMPLE_FAILOVER=`${APP_BIN}/switchVoting.sh`

if [ "$EXC_SIMPLE_FAILOVER" == "success" ]; then
   debugLog "Simple failover success. SDNC failover completed."
else
   # Simple failover failed. Trying catastrophic failover ...
   debugLog "Simple failover failed. Trying catastrophic failover for $SITE_NAME ..."

   # Notify Dmaap before executing catastrophic failover, because all connections will be reset.
   data="{\
   \"type\": \"Catastrophic failover\",\
   \"reason\": \"Simple failover failed\",\
   \"message_router\": \"$message_router\",\
   \"topic\": \"$topic\",\
   \"site\": \"$SITE_NAME\",\
   \"deployment\": \"{{.Values.config.deployment}}\",\
   \"timestamp\": \"$(date '+%F %T')\"\
   }"

   debugLog "$data"

   # notifications to Dmaap
   curl -H "Content-Type: application/json" -X POST --data "$data" http://$message_router/events/$topic >/dev/null 2>&1

   # We're going to kill prom, so we need to do dnsswitch now

   debugLog "Executing sdnc.dnsswitch"

   /app/bin/sdnc.dnsswitch > /dev/null 2>&1
   rc=$?
   if [ $rc -ne 0 ];then
    debugLog "sdnc.dnsswitch FAILED"
    echo $KEYWORD_failure
    exit 0
   fi

   # Now do catastrophic failure

   debugLog "Catastrophic failover in progress"

   ssh  -o StrictHostKeyChecking=no -i /app/config/coredns/master.key root@$SDNC_LOCAL_K8S_CLUSTER_MASTER "su - ubuntu bash -c 'helm upgrade --set sdnc.config.geoEnabled=false dev local/onap --namespace onap; kubectl -n onap delete pods -l app=sdnc'" > /dev/null 2>&1

   # Sleep here so prom can die without us passing control back to ensureSDNCActive
   sleep 300
fi

echo $KEYWORD_success