gistfile1.txt

#!/bin/bash

ENVIRONMENT=$1
REGION=$2
ELB=$3
WORKERS=$4

CURRENT_MINUTE=$(date -d now -u "+%M")
START_MINUTE=$(expr $(expr 60 + $CURRENT_MINUTE - 1) % 60)
START_DATE=$(date -u "+%Y-%m-%dT%H:$START_MINUTE:%S")
END_DATE=$(date -u "+%Y-%m-%dT%H:%M:%S")

LATENCY=$(aws cloudwatch get-metric-statistics --region $REGION --namespace AWS/ELB --metric-name Latency --dimensions Name=LoadBalancerName,Value=$ELB --start-time $START_DATE --end-time $END_DATE --period 60 --statistics Average | jq ".Datapoints[0].Average")
REQUESTS=$(aws cloudwatch get-metric-statistics --region $REGION --namespace AWS/ELB --metric-name RequestCount --dimensions Name=LoadBalancerName,Value=$ELB --start-time $START_DATE --end-time $END_DATE --period 60 --statistics Sum | jq ".Datapoints[0].Sum")
NODES=$(aws cloudwatch get-metric-statistics --region $REGION --namespace AWS/ELB --metric-name HealthyHostCount --dimensions Name=LoadBalancerName,Value=$ELB --start-time $START_DATE --end-time $END_DATE --period 60 --statistics Average | jq ".Datapoints[0].Average")

WORKER_UTILIZATION="$(echo "($REQUESTS / 60 * $LATENCY)/($WORKERS * $NODES)" | bc -l)"
aws cloudwatch put-metric-data --region $REGION --namespace Tilt/ELB --metric-name WorkerUtilization --dimensions Name=$ELB,Env=$ENVIRONMENT --unit Percent --value $WORKER_UTILIZATION
echo $WORKER_UTILIZATION