io.spring.gradle.dependencymanagement.internal.DependencyManagement Maven / Gradle / Ivy

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A Gradle plugin that provides Maven-like dependency management functionality
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/*
 * Copyright 2014-2022 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.gradle.dependencymanagement.internal;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import io.spring.gradle.dependencymanagement.internal.pom.Coordinates;
import io.spring.gradle.dependencymanagement.internal.pom.Dependency;
import io.spring.gradle.dependencymanagement.internal.pom.Pom;
import io.spring.gradle.dependencymanagement.internal.pom.PomReference;
import io.spring.gradle.dependencymanagement.internal.pom.PomResolver;
import io.spring.gradle.dependencymanagement.internal.properties.ProjectPropertySource;
import io.spring.gradle.dependencymanagement.internal.properties.PropertySource;
import org.gradle.api.GradleException;
import org.gradle.api.Project;
import org.gradle.api.artifacts.Configuration;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Encapsulates dependency management information for a particular configuration in a
 * Gradle project.
 *
 * @author Andy Wilkinson
 */
public class DependencyManagement {

	private static final Logger logger = LoggerFactory.getLogger(DependencyManagement.class);

	private final Project project;

	private final Configuration targetConfiguration;

	private final PomResolver pomResolver;

	private boolean resolved;

	private final Map versions = new HashMap();

	private final Map explicitVersions = new HashMap();

	private final Exclusions explicitExclusions = new Exclusions();

	private final Exclusions allExclusions = new Exclusions();

	private final Map bomProperties = new HashMap();

	private final List importedBoms = new ArrayList();

	DependencyManagement(Project project, PomResolver pomResolver) {
		this(project, null, pomResolver);
	}

	DependencyManagement(Project project, Configuration targetConfiguration, PomResolver pomResolver) {
		this.project = project;
		this.pomResolver = pomResolver;
		this.targetConfiguration = targetConfiguration;
	}

	void importBom(Coordinates coordinates, PropertySource properties) {
		this.importedBoms.add(new PomReference(coordinates, properties));
	}

	List getImportedBomReferences() {
		return this.importedBoms;
	}

	Map getImportedProperties() {
		resolveIfNecessary();
		return this.bomProperties;
	}

	void addImplicitManagedVersion(String group, String name, String version) {
		this.versions.put(createKey(group, name), version);
	}

	void addExplicitManagedVersion(String group, String name, String version, List exclusions) {
		String key = createKey(group, name);
		this.explicitVersions.put(key, version);
		this.explicitExclusions.add(key, exclusions);
		this.allExclusions.add(key, exclusions);
		addImplicitManagedVersion(group, name, version);
	}

	String getManagedVersion(String group, String name) {
		resolveIfNecessary();
		return this.versions.get(createKey(group, name));
	}

	Map getManagedVersions() {
		resolveIfNecessary();
		return new HashMap(this.versions);
	}

	/**
	 * Returns the managed dependencies.
	 * @return the managed dependencies
	 */
	public List getManagedDependencies() {
		List managedDependencies = new ArrayList();
		for (Map.Entry entry : this.explicitVersions.entrySet()) {
			String[] components = entry.getKey().split(":");
			managedDependencies.add(new Dependency(new Coordinates(components[0], components[1], entry.getValue()),
					this.explicitExclusions.exclusionsForDependency(entry.getKey())));
		}
		return managedDependencies;
	}

	private String createKey(String group, String name) {
		return group + ":" + name;
	}

	Exclusions getExclusions() {
		resolveIfNecessary();
		return this.allExclusions;
	}

	private void resolveIfNecessary() {
		if (!this.importedBoms.isEmpty() && !this.resolved) {
			try {
				this.resolved = true;
				resolve();
			}
			catch (Exception ex) {
				throw new GradleException("Failed to resolve imported Maven boms: " + getRootCause(ex).getMessage(),
						ex);
			}
		}
	}

	private Throwable getRootCause(Exception ex) {
		Throwable candidate = ex;
		while (candidate.getCause() != null) {
			candidate = candidate.getCause();
		}
		return candidate;
	}

	private void resolve() {
		if (this.targetConfiguration != null) {
			logger.info("Resolving dependency management for configuration '{}' of project '{}'",
					this.targetConfiguration.getName(), this.project.getName());
		}
		else {
			logger.info("Resolving global dependency management for project '{}'", this.project.getName());
		}
		Map existingVersions = new HashMap();
		existingVersions.putAll(this.versions);

		logger.debug("Preserving existing versions: {}", existingVersions);

		List resolvedBoms = this.pomResolver.resolvePoms(this.importedBoms,
				new ProjectPropertySource(this.project));

		for (Pom resolvedBom : resolvedBoms) {
			for (Dependency dependency : resolvedBom.getManagedDependencies()) {
				if (isEmpty(dependency.getClassifier())) {
					Coordinates coordinates = dependency.getCoordinates();
					if (isEmpty(coordinates.getVersion())) {
						String bomId = resolvedBom.getCoordinates().getGroupId() + ":"
								+ resolvedBom.getCoordinates().getArtifactId() + ":"
								+ resolvedBom.getCoordinates().getVersion();
						logger.warn("Dependency management for " + coordinates.getGroupId() + ":"
								+ coordinates.getArtifactId() + " in bom " + bomId
								+ " has no version and will be ignored.");
					}
					else {
						this.versions.put(coordinates.getGroupId() + ":" + coordinates.getArtifactId(),
								coordinates.getVersion());
						this.allExclusions.add(coordinates.getGroupId() + ":" + coordinates.getArtifactId(),
								dependency.getExclusions());
					}
				}
			}
			this.bomProperties.putAll(resolvedBom.getProperties());
		}

		this.versions.putAll(existingVersions);
	}

	private boolean isEmpty(String string) {
		return string == null || string.trim().length() == 0;
	}

}