content: /*
   * Copyright 2012-2019 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
   *
   *      https://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.
   */
  
  package io.spring.start.site.extension.dependency.springcloud;
  
  import io.spring.initializr.generator.version.Version;
  import io.spring.initializr.metadata.BillOfMaterials;
  import io.spring.initializr.metadata.InitializrMetadata;
  import io.spring.initializr.versionresolver.DependencyManagementVersionResolver;
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  
  /**
   * Resolve Spring Cloud artifact versions using a
   * {@link DependencyManagementVersionResolver}.
   *
   * @author Olga Maciaszek-Sharma
   * @author Stephane Nicoll
   */
  class SpringCloudProjectVersionResolver {
  
  	private static final Log logger = LogFactory.getLog(SpringCloudProjectVersionResolver.class);
  
  	private final InitializrMetadata metadata;
  
  	private final DependencyManagementVersionResolver resolver;
  
  	SpringCloudProjectVersionResolver(InitializrMetadata metadata, DependencyManagementVersionResolver resolver) {
  		this.metadata = metadata;
  		this.resolver = resolver;
  	}
  
  	/**
  	 * Resolve the version of a specified artifact that matches the provided Spring Boot
  	 * version.
  	 * @param platformVersion the Spring Boot version to check the Spring Cloud Release
  	 * train version against
  	 * @param dependencyId the dependency id of the Spring Cloud artifact in the form of
  	 * {@code groupId:artifactId}
  	 * @return the appropriate project version or {@code null} if the resolution failed
  	 */
  	String resolveVersion(Version platformVersion, String dependencyId) {
  		BillOfMaterials bom = this.metadata.getConfiguration().getEnv().getBoms().get("spring-cloud");
  		if (bom == null) {
  			return null;
  		}
  		String releaseTrainVersion = bom.resolve(platformVersion).getVersion();
  		logger.info("Retrieving version for artifact: " + dependencyId + " and release train version: "
  				+ releaseTrainVersion);
  		return this.resolver.resolve("org.springframework.cloud", "spring-cloud-dependencies", releaseTrainVersion)
  				.get(dependencyId);
  	}
  
  }
  