# Encoding: utf-8

# Cloud Foundry Java Buildpack

# Copyright 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.

require 'java_buildpack/component'

require 'java_buildpack/util/qualify_path'

module JavaBuildpack

module Component

# An abstraction encapsulating the +JAVA_OPTS+ of an application.

#

# A new instance of this type should be created once for the application.

class JavaOpts < Array

include JavaBuildpack::Util

# Creates an instance of the +JAVA_OPTS+ abstraction.

#

# @param [Pathname] droplet_root the root directory of the droplet

def initialize(droplet_root)

@droplet_root = droplet_root

end

# Adds a +javaagent+ entry to the +JAVA_OPTS+. Prepends +$PWD+ to the path (relative to the droplet root) to

# ensure that the path is always accurate.

#

# @param [Pathname] path the path to the +javaagent+ JAR

# @return [JavaOpts] +self+ for chaining

def add_javaagent(path)

self << "-javaagent:#{qualify_path path}"

self

end

# Adds a system property to the +JAVA_OPTS+. Ensures that the key is prepended with +-D+. If the value is a

# +Pathname+, then prepends +$PWD+ to the path (relative to the droplet root) to ensure that the path is always

# accurate. Otherwise, uses the value as-is.

#

# @param [String] key the key of the system property

# @param [Pathname, String] value the value of the system property

# @return [JavaOpts] +self+ for chaining

def add_system_property(key, value)

self << "-D#{key}=#{qualify_value(value)}"

self

end

# Adds an option to the +JAVA_OPTS+. Nothing is prepended to the key. If the value is a +Pathname+, then prepends

# +$PWD+ to the path (relative to the droplet root) to ensure that the path is always accurate. Otherwise, uses

# the value as-is.

#

# @param [String] key the key of the option

# @param [Pathname, String] value the value of the system property

# @return [JavaOpts] +self+ for chaining

def add_option(key, value)

self << "#{key}=#{qualify_value(value)}"

self

end

# Returns the contents as an environment variable formatted as +JAVA_OPTS="<value1> <value2>"+

#

# @return [String] the contents as an environment variable

def as_env_var

"JAVA_OPTS=\"#{join(' ')}\""

end

private

def qualify_value(value)

value.respond_to?(:relative_path_from) ? qualify_path(value) : value

end

end

end

end