# Encoding: utf-8

# Cloud Foundry Java Buildpack

# Copyright 2013-2016 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 'pathname'

require 'java_buildpack/util'

require 'java_buildpack/util/jar_finder'

require 'java_buildpack/util/java_main_utils'

module JavaBuildpack

module Util

# Utilities for dealing with Spring Boot applications

class SpringBootUtils

def initialize

@jar_finder = JavaBuildpack::Util::JarFinder.new(/.*spring-boot-([\d].*)\.jar/)

end

# Indicates whether an application is a Spring Boot application

#

# @param [Application] application the application to search

# @return [Boolean] +true+ if the application is a Spring Boot application, +false+ otherwise

def is?(application)

JavaBuildpack::Util::JavaMainUtils.manifest(application).key?(SPRING_BOOT_VERSION) ||

@jar_finder.is?(application)

end

# The lib directory of Spring Boot used by the application

#

# @param [Droplet] droplet the droplet to search

# @return [String] the lib directory of Spring Boot used by the application

def lib(droplet)

candidate = manifest_lib_dir(droplet)

return candidate if candidate && candidate.exist?

candidate = boot_inf_lib_dir(droplet)

return candidate if candidate && candidate.exist?

candidate = web_inf_lib_dir(droplet)

return candidate if candidate && candidate.exist?

candidate = lib_dir(droplet)

return candidate if candidate && candidate.exist?

raise 'No lib directory found'

end

# The version of Spring Boot used by the application

#

# @param [Application] application the application to search

# @return [String] the version of Spring Boot used by the application

def version(application)

JavaBuildpack::Util::JavaMainUtils.manifest(application)[SPRING_BOOT_VERSION] ||

@jar_finder.version(application)

end

private

SPRING_BOOT_LIB = 'Spring-Boot-Lib'.freeze

SPRING_BOOT_VERSION = 'Spring-Boot-Version'.freeze

private_constant :SPRING_BOOT_LIB, :SPRING_BOOT_VERSION

def boot_inf_lib_dir(droplet)

droplet.root + 'BOOT-INF/lib'

end

def manifest_lib_dir(droplet)

value = JavaBuildpack::Util::JavaMainUtils.manifest(droplet)[SPRING_BOOT_LIB]

value ? droplet.root + value : nil

end

def lib_dir(droplet)

droplet.root + 'lib'

end

def web_inf_lib_dir(droplet)

droplet.root + 'WEB-INF/lib'

end

end

end

end