#!/bin/bash
#
# Perform a validation of an Oracle DB backup
# v0.2 - James Pattinson - August 2021
#
# usage: oracle_validate.sh <HOSTNAME> <CDBNAME> <HOSTNAME> <"timestamp"> [sgasizeMB]
#
# Timestamp YYYY-MM-DD HH:MM:SS
# Time is passed to 'date' on THIS machine, will use local timezone
#
# SGA size defaults to 30% of target host RAM if size in MB is not specified

MYDIR="$(dirname "$(realpath "$0")")"
# source $MYDIR/rbk_api.conf
source $MYDIR/oracle_funcs.sh

usage() { echo "Usage: $0 [-h <dbhost>] [-n] [-s sgasizeMB] <srcSID> <tgtHOSTNAME> <"timestamp">" 1>&2; exit 1; }

while getopts "h:s:n" o; do
    case "${o}" in
        h)
            RBK_HOST=${OPTARG}
            ;;
		s)
			sgasizeMB=${OPTARG}
			;;
		n)
			nowait=1
			;;
		*)
            usage
            ;;
    esac
done
shift $((OPTIND-1))

RBK_SID=$1

if [ -z "${RBK_SID}" ]; then
    usage
fi

RBK_SID=$1
RBK_TGT=$2

echo Connecting to Rubrik with IP $RUBRIK_IP

# API call to list Oracle DBs
find_database

# API call to get the host ID of the target
ENDPOINT="https://$RUBRIK_IP/api/internal/oracle/host?name=$RBK_TGT"
http_response=$(curl -s -k -o /tmp/rbkresponse.$$ -w "%{http_code}" -X GET $ENDPOINT -H "accept: application/json" -H "Authorization: Bearer $AUTH_TOKEN")
check_http_error

total=$(cat /tmp/rbkresponse.$$ | jq -r .total)
if [ $total -ne 1 ]; then
    echo Target host name of $RBK_TGT does not map to a single host:
	cat /tmp/rbkresponse.$$ | jq -r '.data[].name'
	exit_with_error
fi

target_id=$(cat /tmp/rbkresponse.$$ | jq -r '.data[0].id')

# convert datestamp from string into milliseconds
datestring=$3

echo requested timestamp is $datestring

ts=$(date -d"$datestring" +%s)
if [ $? -ne 0 ]; then
    echo Problem with timestamp
	exit_with_error
fi
((millis = $ts * 1000))

# API call to perform the validation

# is SGA size specified?
if [ -z $sgasizeMB ]; then
    PAYLOAD="{\"recoveryPoint\":{\"timestampMs\":$millis},\"targetOracleHostOrRacId\":\"$target_id\"}"
else
    PAYLOAD="{\"recoveryPoint\":{\"timestampMs\":$millis},\"targetOracleHostOrRacId\":\"$target_id\",\"sgaMaxSizeInMb\":$sgasizeMB}"
fi

echo Requesting validation for $RBK_SID on target host $RBK_TGT

ENDPOINT="https://$RUBRIK_IP/api/v1/oracle/db/$db_id/validate"

rest_api_post

# Check the status in a loop. Translation of link using sed because API returns wrong href!
ENDPOINT=$(cat /tmp/rbkresponse.$$ | jq -r '.links[0].href' | sed 's/v1/internal/')
check_status
cleanup