mthmulders commented on code in PR #995: URL: https://github.com/apache/maven/pull/995#discussion_r1101938159
########## maven-embedder/src/main/java/org/apache/maven/cli/MavenStatusCommand.java: ########## @@ -0,0 +1,217 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you 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. + */ +package org.apache.maven.cli; + +import java.io.File; +import java.io.IOException; +import java.net.URI; +import java.nio.file.Files; +import java.nio.file.Path; +import java.nio.file.Paths; +import java.util.ArrayList; +import java.util.Collection; +import java.util.Collections; +import java.util.Comparator; +import java.util.List; +import java.util.stream.Collectors; +import java.util.stream.Stream; + +import org.apache.maven.api.ArtifactCoordinate; +import org.apache.maven.api.Session; +import org.apache.maven.api.services.ArtifactResolver; +import org.apache.maven.api.services.ArtifactResolverException; +import org.apache.maven.api.services.ArtifactResolverResult; +import org.apache.maven.artifact.repository.ArtifactRepository; +import org.apache.maven.bridge.MavenRepositorySystem; +import org.apache.maven.execution.DefaultMavenExecutionResult; +import org.apache.maven.execution.MavenExecutionRequest; +import org.apache.maven.execution.MavenExecutionRequestPopulationException; +import org.apache.maven.execution.MavenExecutionRequestPopulator; +import org.apache.maven.execution.MavenSession; +import org.apache.maven.internal.aether.DefaultRepositorySystemSessionFactory; +import org.apache.maven.internal.impl.DefaultArtifactCoordinate; +import org.apache.maven.internal.impl.DefaultSession; +import org.apache.maven.internal.impl.DefaultSessionFactory; +import org.apache.maven.session.scope.internal.SessionScope; +import org.codehaus.plexus.PlexusContainer; +import org.codehaus.plexus.component.repository.exception.ComponentLookupException; +import org.eclipse.aether.RepositorySystemSession; +import org.eclipse.aether.artifact.Artifact; +import org.eclipse.aether.artifact.DefaultArtifact; +import org.eclipse.aether.resolution.ArtifactResolutionException; +import org.eclipse.aether.resolution.ArtifactResult; +import org.eclipse.aether.transfer.ArtifactNotFoundException; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +public class MavenStatusCommand { + private static final Logger LOGGER = LoggerFactory.getLogger(MavenStatusCommand.class); + + /** + * In order to verify artifacts can be downloaded from the remote repositories we want to resolve an actual + * artifact. The Apache Maven artifact was chosen as it eventually, be it by proxy, mirror or directly, will be + * gathered from the central repository. The version is chosen arbitrarily since any listed should work. + */ + public static final Artifact APACHE_MAVEN_ARTIFACT = + new DefaultArtifact("org.apache.maven", "apache-maven", null, "pom", "3.8.6"); + + private final MavenExecutionRequestPopulator mavenExecutionRequestPopulator; + private final ArtifactResolver artifactResolver; + private final RemoteRepositoryConnectionVerifier remoteRepositoryConnectionVerifier; + private final DefaultSessionFactory defaultSessionFactory; + private final DefaultRepositorySystemSessionFactory repoSession; + private final MavenRepositorySystem repositorySystem; + private final PlexusContainer container; + private final SessionScope sessionScope; + private Path tempLocalRepository; + + public MavenStatusCommand(final PlexusContainer container) throws ComponentLookupException { + this.container = container; + this.remoteRepositoryConnectionVerifier = new RemoteRepositoryConnectionVerifier(container); + this.mavenExecutionRequestPopulator = container.lookup(MavenExecutionRequestPopulator.class); + this.artifactResolver = container.lookup(ArtifactResolver.class); + this.defaultSessionFactory = container.lookup(DefaultSessionFactory.class); + this.repoSession = container.lookup(DefaultRepositorySystemSessionFactory.class); + this.sessionScope = container.lookup(SessionScope.class); + this.repositorySystem = container.lookup(MavenRepositorySystem.class); + } + + public List<String> verify(final MavenExecutionRequest cliRequest) throws MavenExecutionRequestPopulationException { + final MavenExecutionRequest mavenExecutionRequest = mavenExecutionRequestPopulator.populateDefaults(cliRequest); + + final ArtifactRepository localRepository = cliRequest.getLocalRepository(); + + final List<String> localRepositoryIssues = + verifyLocalRepository(Paths.get(URI.create(localRepository.getUrl()))); + + // We overwrite the local repository with a temporary folder to avoid using a cached version of the artifact. + setTemporaryLocalRepositoryPathOnRequest(cliRequest); + + final List<String> remoteRepositoryIssues = + verifyRemoteRepositoryConnections(cliRequest.getRemoteRepositories(), mavenExecutionRequest); + final List<String> artifactResolutionIssues = verifyArtifactResolution(mavenExecutionRequest); + + cleanupTempFiles(); + + // Collect all issues into a single list + return Stream.of(localRepositoryIssues, remoteRepositoryIssues, artifactResolutionIssues) + .flatMap(Collection::stream) + .collect(Collectors.toList()); + } + + private void cleanupTempFiles() { + if (tempLocalRepository != null) { + try (Stream<Path> files = Files.walk(tempLocalRepository)) { + files.sorted(Comparator.reverseOrder()) // Sort in reverse order so that directories are deleted last + .map(Path::toFile) + .forEach(File::delete); + } catch (IOException ioe) { + LOGGER.debug("Failed to delete temporary local repository", ioe); + } + } + } + + private void setTemporaryLocalRepositoryPathOnRequest(final MavenExecutionRequest request) { + try { + tempLocalRepository = Files.createTempDirectory("mvn-status").toAbsolutePath(); + request.setLocalRepositoryPath(tempLocalRepository.toString()); + request.setLocalRepository(repositorySystem.createLocalRepository(request, tempLocalRepository.toFile())); + } catch (Exception ex) { + LOGGER.debug("Could not create temporary local repository", ex); + LOGGER.warn("Artifact resolution test is less accurate as it may use earlier resolution results."); + } + } + + private List<String> verifyRemoteRepositoryConnections( + final List<ArtifactRepository> remoteRepositories, final MavenExecutionRequest mavenExecutionRequest) { + final List<String> issues = new ArrayList<>(); + + for (ArtifactRepository remoteRepository : remoteRepositories) { + final RepositorySystemSession repositorySession = repoSession.newRepositorySession(mavenExecutionRequest); + remoteRepositoryConnectionVerifier + .verifyConnectionToRemoteRepository(repositorySession, remoteRepository) + .ifPresent(issues::add); + } + + return issues; + } + + private List<String> verifyArtifactResolution(final MavenExecutionRequest mavenExecutionRequest) { Review Comment: > [...] 1 step too much [...] Just to verify: are you referring to the fact that this code actually _downloads_ a file (e.g., it could've been an HTTP HEAD request), or to the fact that the `--status` verifies if artifact resolution works? In the case of the former: is a remote repository required to support an HTTP HEAD request? Could we rely on the fact that if HTTP HEAD is OK, HTTP GET will be OK, too? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@maven.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
