# 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 'fileutils'

require 'java_buildpack/component/base_component'

require 'java_buildpack/container'

require 'java_buildpack/repository/configured_item'

require 'java_buildpack/util/dash_case'

require 'java_buildpack/util/java_main_utils'

module JavaBuildpack::Container

# Encapsulates the detect, compile, and release functionality for Tomcat applications.

class Tomcat < JavaBuildpack::Component::BaseComponent

def initialize(context)

super(context)

if supports?

@tomcat_version, @tomcat_uri = JavaBuildpack::Repository::ConfiguredItem

.find_item(@component_name, @configuration) { |candidate_version| candidate_version.check_size(3) }

@support_version, @support_uri = JavaBuildpack::Repository::ConfiguredItem

.find_item(@component_name, @configuration['support'])

else

@tomcat_version, @tomcat_uri = nil, nil

@support_version, @support_uri = nil, nil

end

end

def detect

@tomcat_version && @support_version ? [tomcat_id(@tomcat_version), support_id(@support_version)] : nil

end

def compile

download_tomcat

download_support

link_to(@application.root.children, root)

do_not_depend_on_this

@droplet.additional_libraries << tomcat_datasource_jar if tomcat_datasource_jar.exist?

@droplet.additional_libraries.link_to web_inf_lib

end

def release

@droplet.java_opts.add_system_property 'http.port', '$PORT'

[

@droplet.java_home.as_env_var,

@droplet.java_opts.as_env_var,

"$PWD/#{(@droplet.sandbox + 'bin/catalina.sh').relative_path_from(@droplet.root)}",

'run'

].compact.join(' ')

end

protected

# The unique identifier of the component, incorporating the version of the dependency (e.g. +tomcat=7.0.42+)

#

# @param [String] version the version of the dependency

# @return [String] the unique identifier of the component

def tomcat_id(version)

"#{Tomcat.to_s.dash_case}=#{version}"

end

# The unique identifier of the component, incorporating the version of the dependency (e.g. +tomcat-buildpack-support=1.1.0+)

#

# @param [String] version the version of the dependency

# @return [String] the unique identifier of the component

def support_id(version)

"tomcat-buildpack-support=#{version}"

end

# Whether or not this component supports this application

#

# @return [Boolean] whether or not this component supports this application

def supports?

web_inf? && !JavaBuildpack::Util::JavaMainUtils.main_class(@application)

end

private

def container_libs_directory

@droplet.root + '.spring-insight/container-libs'

end

# DO NOT DEPEND ON THIS FUNCTIONALITY

def do_not_depend_on_this

link_to(container_libs_directory.children, tomcat_lib) if container_libs_directory.exist?

link_to(extra_applications_directory.children, webapps) if extra_applications_directory.exist?

end

def download_tomcat

download(@tomcat_version, @tomcat_uri) { |file| expand file }

end

def download_support

download_jar(@support_version, @support_uri, support_jar_name, @droplet.sandbox + 'lib',

'Buildpack Tomcat Support')

end

def expand(file)

with_timing "Expanding Tomcat to #{@droplet.sandbox.relative_path_from(@droplet.root)}" do

FileUtils.mkdir_p @droplet.sandbox

shell "tar xzf #{file.path} -C #{@droplet.sandbox} --strip 1 --exclude webapps 2>&1"

@droplet.copy_resources

end

end

def extra_applications_directory

@droplet.root + '.spring-insight/extra-applications'

end

def link_to(source, destination)

FileUtils.mkdir_p destination

source.each { |path| (destination + path.basename).make_symlink(path.relative_path_from(destination)) }

end

def root

webapps + 'ROOT'

end

def support_jar_name

"tomcat_buildpack_support-#{@support_version}.jar"

end

def tomcat_datasource_jar

tomcat_lib + 'tomcat-jdbc.jar'

end

def tomcat_lib

@droplet.sandbox + 'lib'

end

def webapps

@droplet.sandbox + 'webapps'

end

def web_inf_lib

@droplet.root + 'WEB-INF/lib'

end

def web_inf?

(@application.root + 'WEB-INF').exist?

end

end

end