VALET_balancer_executor

#!/bin/bash

search_line_number=$(grep -n "master-instance" terraform/terraform.tfstate | cut -f1 -d:)								#Get line number, after master information starts
MASTER_NODE_IP_PUBLIC=$(tail -n +$search_line_number terraform/terraform.tfstate | grep "access_ip_v4" | awk -F ': "' '{print $2}' | head -c -3)	#Get public IP of master node
SSH_PATH_MASTER=$(awk '/private_key_path/{getline; print}' terraform/vars.tf | awk -F ' = "' '{print $2}' | head -c -2)					#Get path to SSH key to master node
RC_FILE_PATH="/path/to/rc/file.sh"

### Logdate variables ###
month_short=$(date +%b)
day=$(date +%d)
timestamp=$(date +%T)
logtime="$month_short$day $timestamp"

function VALET_status_check {
	local status_key_word_transmitted
	status_key_word_transmitted=$(ssh -n -o StrictHostKeyChecking=no -i $SSH_PATH_MASTER centos@$MASTER_NODE_IP_PUBLIC VALET_balancer_parser)	#Request cluster status from parser on master node

	if [ -z "$status_key_word_transmitted" ]; then										#Check for empty variable as answer
		echo "$logtime Status request sends empty variable please check services on master node"

	elif [ "$status_key_word_transmitted" == "" ]; then									#Check for empty string as answer
		echo "$logtime Status request sends empty string please check services on master node"

	elif [ "$status_key_word_transmitted" == "start" ]; then								#Check for keyword start as answer
		echo "$logtime Status request sends command to start a new node"
		sh start_up_new_node $RC_FILE_PATH

	elif [ "$status_key_word_transmitted" == "stop" ]; then									#Check for keyword stop as answer
		echo "$logtime Status request sends command to stop a node"
		sh stop_node $RC_FILE_PATH

	elif [ "$status_key_word_transmitted" == "stay" ]; then									#Check for keyword stay as answer
        	echo "$logtime Status request sends command to stay with the current number of nodes"

	elif [ "$status_key_word_transmitted" == "none" ]; then									#Check for keyword none as answer
		echo "$logtime Status request sends information, that the .VALET_status file in /home/centos/ does not exist"

	else															#Default fallback if undefined behaviour occurs
		echo "$logtime Status reqest sends an undefined command: $status_key_word_transmitted"
	fi
}

VALET_status_check #Call function