#!/usr/bin/env ruby

# Encoding: utf-8

# Cloud Foundry Java Buildpack

# Copyright (c) 2013 the original author or authors.

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

# http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

# Kill script for use as the parameter of OpenJDK's -XX:OnOutOfMemoryError.

#

# It should be placed in the buildpack diagnostic directory so it logs to

# the same log file as the rest of the buildpack.

require 'time'

$stdout.sync = true

module Kill

def self.log(log_data)

log_file_name = "#{File.dirname(__FILE__)}/@@LOG_FILE_NAME@@"

File.open(log_file_name, 'a') do |log_file|

log_file.sync = true

log_file.write "#{log_data} @ #{Kill.time_in_millis}\n"

log_file.fsync

end

end

def self.time_in_millis

Time.now.xmlschema(3).sub(/T/, ' ')

end

def self.log_process_tree

Kill.log(`ps -AHF`)

end

end

begin

Kill.log_process_tree

# Kill all processes whose parameters match -XX:OnOutOfMemoryError and the name of this script.

# This script can be renamed as necessary without modifying its code.

command = "pkill -9 -f .*-XX:OnOutOfMemoryError=.*#{File.basename(__FILE__)}.*"

Kill.log("#{__FILE__} attempting to kill Java processes using `#{command}`")

system command

Kill.log_process_tree

rescue => e

Kill.log("#{__FILE__} failed with exception #{e.inspect}, #{e.backtrace}\n")

abort e.message

end