---
AWSTemplateFormatVersion: "2010-09-09"

Parameters:
  SAPASCSHOST:
    Description: "SAP ASCS Host Instance ID"
    Type: String
  SAPERSHOST:
    Description: "SAP ERS HOST Instance ID"
    Type: String
Resources:
  SSMRunCommandDocument:
    Type: AWS::SSM::Document
    Properties:
      DocumentType: 'Command'
      Content:
        schemaVersion: '2.2'
        description: "Some description"
        mainSteps:
          - action: "aws:runShellScript"
            name: runShellScript
            inputs:
              runCommand:
                - INSTANCE_ID=$(curl -s http://169.254.169.254/latest/meta-data/instance-id)
                - STCOUNT=$( /usr/sbin/crm_mon -1|grep stonith|grep Started|wc -l)
                - echo $STCOUNT
                - if [ $STCOUNT -gt 0 ]
                - then
                - echo "Stonith is running"
                - aws cloudwatch put-metric-data --metric-name SAPCluster-Stonith-Status --dimensions Instance=$INSTANCE_ID --namespace "Custom" --value $STCOUNT
                - else
                - echo "Stonith is not running"
                - aws cloudwatch put-metric-data --metric-name SAPCluster-Stonith-Status --dimensions Instance=$INSTANCE_ID --namespace "Custom" --value $STCOUNT
                - fi
                - OIPCOUNT=$(/usr/sbin/crm_mon -1|grep aws-vpc-move-ip|grep Started|wc -l)
                - echo $OIPCOUNT
                - if [ $OIPCOUNT -eq 2 ]
                - then
                - echo "Overlay IP is running"
                - aws cloudwatch put-metric-data --metric-name SAPCluster-OIP-Status --dimensions Instance=$INSTANCE_ID --namespace "Custom" --value $OIPCOUNT
                - else
                - echo "Overlay IP is not running"
                - aws cloudwatch put-metric-data --metric-name SAPCluster-OIP-Status --dimensions Instance=$INSTANCE_ID --namespace "Custom" --value $OIPCOUNT
                - fi
                - SAPCOUNT=$(/usr/sbin/crm_mon -1|grep SAPInstance|grep Started|wc -l)
                - echo $SAPCOUNT
                - if [ $SAPCOUNT -eq 2 ]
                - then
                - echo "SAP Instance is running"
                - aws cloudwatch put-metric-data --metric-name SAPCluster-SAPInstance-Status --dimensions Instance=$INSTANCE_ID --namespace "Custom" --value $SAPCOUNT
                - else
                - echo "SAP Instance is not running"
                - aws cloudwatch put-metric-data --metric-name SAPCluster-SAPInstance-Status --dimensions Instance=$INSTANCE_ID --namespace "Custom" --value $SAPCOUNT
                - fi
                - FILECOUNT=$(/usr/sbin/crm_mon -1|grep Filesystem|grep Started|wc -l)
                - echo $FILECOUNT
                - if [ $FILECOUNT -eq 2 ]
                - then
                - echo "All SAP file systems are up in cluster"
                - aws cloudwatch put-metric-data --metric-name SAPCluster-FileSystem-Status --dimensions Instance=$INSTANCE_ID --namespace "Custom" --value $FILECOUNT
                - else
                - echo "Some files systems are not running"
                - aws cloudwatch put-metric-data --metric-name SAPCluster-FileSystem-Status --dimensions Instance=$INSTANCE_ID --namespace "Custom" --value $FILECOUNT
                - fi
                - NODES=$(/usr/sbin/crm_mon -1X | grep -e "node name=.*online=.true." | wc -l)
                - echo $NODES
                - aws cloudwatch put-metric-data --metric-name SAPCluster-Node-Status --dimensions Instance=$INSTANCE_ID --namespace "Custom" --value $NODES    # required
                - DISKUSAGE=$(df -hP /usr/sap | awk '{print $5}' |tail -1|sed 's/%$//g')
                - echo $DISKUSAGE
                - aws cloudwatch put-metric-data --metric-name SAP-Disc-usage --dimensions Instance=$INSTANCE_ID --namespace "Custom" --value $DISKUSAGE
                - MEMUSAGE=$(free -m|awk '/^Mem:/{print 100*$3/$2}')
                - echo $MEMUSAGE
                - aws cloudwatch put-metric-data --metric-name SAP-Host-Memory-Usage --dimensions Instance=$INSTANCE_ID --namespace "Custom" --value $MEMUSAGE

  CloudWatchEventRule:
    Type: AWS::Events::Rule
    Properties:
      Description: "The ARN from the eventbridge role resource"
      RoleArn: !Sub "arn:aws:iam::${AWS::AccountId}:role/EVENT-RULE-ROLE"
      ScheduleExpression: rate(1 minute)
      State: ENABLED
      Targets:
        - Id: SAPClusID
          Arn: !Sub "arn:${AWS::Partition}:ssm:${AWS::Region}:${AWS::AccountId}:document/${SSMRunCommandDocument}"
          RoleArn: !Sub "arn:aws:iam::${AWS::AccountId}:role/SSM-DOCUMENT-ROLE"
          RunCommandParameters:
            RunCommandTargets:
             - Key: InstanceIds
               Values:
                 - !Ref SAPASCSHOST
                 - !Ref SAPERSHOST