#!/usr/bin/env bash
# The buildpacks image under common container memory limits. The Paketo memory calculator runs
# before the JVM and refuses to launch if its fixed regions do not fit.
# -> docs/output/buildpacks-memory.txt
set -uo pipefail
source "$(dirname "$0")/env.sh"
run() { # label, docker args...
  local label="$1"; shift
  local name="bpm-$$"; docker rm -f "$name" > /dev/null 2>&1
  docker run -d --name "$name" "$@" sbd/docker-images:buildpacks > /dev/null
  for _ in $(seq 1 100); do
    docker logs "$name" 2>&1 | grep -qE 'Started ImagesApplication|failed to launch' && break; sleep 0.1
  done
  echo "## $label"
  docker logs "$name" 2>&1 | grep -E 'Calculated JVM Memory|unable to calculate|fixed memory regions|failed to launch|Started ImagesApplication' \
    | sed -E 's/^[0-9T:.-]+Z +INFO 1 --- \[docker-images\] \[ +main\] com.ankurm.images.ImagesApplication +: //; s/\x1b\[[0-9;]*m//g' | cut -c1-230
  echo "state: $(docker inspect -f '{{.State.Status}} (exit {{.State.ExitCode}})' "$name")"
  echo
  docker rm -f "$name" > /dev/null
}
{
  run "docker run -m 512m"                               -m 512m
  run "docker run -m 768m"                               -m 768m
  run "docker run -m 512m -e BPL_JVM_THREAD_COUNT=50"   -m 512m -e BPL_JVM_THREAD_COUNT=50
} | tee "$OUT/buildpacks-memory.txt"