api-v1-jobs.sh

#!/bin/bash

set -o errexit

main () {
	local stats_collector_pid

	make_all_jobs_active
	login

	collect_mem_metrics & stats_collector_pid=$!
	for i in $(seq 1 20); do
		make_concurrent_requests $i
		sleep 3
	done
	kill $stats_collector_pid
}

login () {
	fly -t local login -u test -p test
}

request_jobs () {
	fly -t local curl /api/v1/jobs &> /dev/null
}

collect_mem_metrics () {
	while true; do
		mem >> stats.txt
		sleep 0.1
	done
}

make_concurrent_requests () {
	local inflight=$1
	local pids=()

	for i in $(seq 1 $inflight); do
		request_jobs & pids+=($!)
	done

	for pid in ${pids[@]}; do
		wait $pid
	done
}

mem () {
	curl -s localhost:8079/debug/mem
}

make_all_jobs_active () {
	local qry="UPDATE jobs SET active=true;"

	echo "$qry" | docker exec -i concourse_db_1 psql -U dev \
		--dbname concourse;
}


main "$@"