container_customizer.rb

# frozen_string_literal: true

# Cloud Foundry Java Buildpack
# Copyright 2013-2020 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/versioned_dependency_component'
require 'java_buildpack/framework'
require 'java_buildpack/util/spring_boot_utils'

module JavaBuildpack
  module Framework

    # Encapsulates the functionality for customizing a Spring Boot container.
    class ContainerCustomizer < JavaBuildpack::Component::VersionedDependencyComponent

      # (see JavaBuildpack::Component::BaseComponent#compile)
      def compile
        download_jar
        @droplet.additional_libraries << (@droplet.sandbox + jar_name)
      end

      # (see JavaBuildpack::Component::BaseComponent#release)
      def release
        @droplet.additional_libraries << (@droplet.sandbox + jar_name)
      end

      protected

      # (see JavaBuildpack::Component::VersionedDependencyComponent#supports?)
      def supports?
        spring_boot? && war?
      end

      private

      def spring_boot?
        JavaBuildpack::Util::SpringBootUtils.new.is?(@application)
      end

      def war?
        (@droplet.root + 'WEB-INF/lib').exist?
      end

    end

  end
end