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Posted to issues@maven.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2022/10/01 10:10:00 UTC

[jira] [Commented] (MRESOLVER-276) Resolver post-processor

    [ https://issues.apache.org/jira/browse/MRESOLVER-276?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17611857#comment-17611857 ] 

ASF GitHub Bot commented on MRESOLVER-276:
------------------------------------------

michael-o commented on code in PR #200:
URL: https://github.com/apache/maven-resolver/pull/200#discussion_r985080021


##########
maven-resolver-impl/src/main/java/org/eclipse/aether/internal/impl/DefaultArtifactResolver.java:
##########
@@ -117,7 +122,8 @@ public DefaultArtifactResolver()
                              VersionResolver versionResolver, UpdateCheckManager updateCheckManager,
                              RepositoryConnectorProvider repositoryConnectorProvider,
                              RemoteRepositoryManager remoteRepositoryManager, SyncContextFactory syncContextFactory,
-                             OfflineController offlineController )
+                             OfflineController offlineController,
+                             Map<String, ArtifactResolverPostProcessor> artifactResolverPostProcessors )

Review Comment:
   Do we really need the key here?



##########
maven-resolver-impl/src/main/java/org/eclipse/aether/internal/impl/resolution/ArtifactResolverPostProcessorSupport.java:
##########
@@ -0,0 +1,67 @@
+package org.eclipse.aether.internal.impl.resolution;
+
+/*
+ * 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.
+ */
+
+import java.util.List;
+
+import org.eclipse.aether.RepositorySystemSession;
+import org.eclipse.aether.resolution.ArtifactResult;
+import org.eclipse.aether.spi.resolution.ArtifactResolverPostProcessor;
+import org.eclipse.aether.util.ConfigUtils;
+
+import static java.util.Objects.requireNonNull;
+
+/**
+ * Support class to implement {@link ArtifactResolverPostProcessor}.
+ *
+ * @since TBD
+ */
+public abstract class ArtifactResolverPostProcessorSupport
+        implements ArtifactResolverPostProcessor
+{
+    private static final String CONFIG_PROP_PREFIX = "aether.artifactResolver.postProcessor.";
+
+    private static final String CONF_NAME_ENABLED = "enabled";

Review Comment:
   So the post processors aren't auto enabled when discovered by DI?



##########
maven-resolver-impl/src/main/java/org/eclipse/aether/internal/impl/DefaultArtifactResolver.java:
##########
@@ -426,6 +442,14 @@ else if ( local.getFile() != null )
             }
         }
 
+        for ( ArtifactResolverPostProcessor artifactResolverPostProcessor : artifactResolverPostProcessors.values() )
+        {
+            if ( artifactResolverPostProcessor.postProcess( session, results ) )
+            {
+                failures = true;
+            }

Review Comment:
   This is not fail fast, right?



##########
maven-resolver-impl/src/main/java/org/eclipse/aether/internal/impl/resolution/ChecksumArtifactResolverPostProcessor.java:
##########
@@ -0,0 +1,89 @@
+package org.eclipse.aether.internal.impl.resolution;
+
+/*
+ * 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.
+ */
+
+import javax.inject.Inject;
+import javax.inject.Named;
+import javax.inject.Singleton;
+
+import java.util.List;
+
+import org.eclipse.aether.RepositorySystemSession;
+import org.eclipse.aether.artifact.Artifact;
+import org.eclipse.aether.repository.ArtifactRepository;
+import org.eclipse.aether.resolution.ArtifactResult;
+import org.eclipse.aether.spi.connector.checksum.ChecksumAlgorithmFactorySelector;
+import org.eclipse.aether.spi.connector.checksum.ProvidedChecksumsSource;
+
+import static java.util.Objects.requireNonNull;
+
+/**
+ * Artifact resolver processor that verifies the checksums all the resolved artifacts against trusted (provided)
+ * checksums.
+ *
+ * @since TBD
+ */
+@Singleton
+@Named( ChecksumArtifactResolverPostProcessor.NAME )
+public final class ChecksumArtifactResolverPostProcessor
+        extends ArtifactResolverPostProcessorSupport
+{
+    public static final String NAME = "checksum";
+
+    private final ChecksumAlgorithmFactorySelector checksumAlgorithmFactorySelector;
+
+    private final List<ProvidedChecksumsSource> providedChecksumsSources;
+
+    @Inject
+    public ChecksumArtifactResolverPostProcessor( ChecksumAlgorithmFactorySelector checksumAlgorithmFactorySelector,
+                                                  List<ProvidedChecksumsSource> providedChecksumsSources )
+    {
+        super( NAME );
+        this.checksumAlgorithmFactorySelector = requireNonNull( checksumAlgorithmFactorySelector );
+        this.providedChecksumsSources = requireNonNull( providedChecksumsSources );
+    }
+
+    @Override
+    protected boolean doProcess( RepositorySystemSession session, List<ArtifactResult> artifactResults )
+    {
+        boolean failures = false;
+        for ( ArtifactResult artifactResult : artifactResults )
+        {
+            Artifact artifact = artifactResult.getArtifact();
+            if ( artifact != null && artifact.getFile() != null )
+            {
+                if ( !validateArtifactChecksums( session, artifactResult ) )
+                {
+                    failures = true;
+                }
+            }
+        }
+        return failures;
+    }
+
+    private boolean validateArtifactChecksums( RepositorySystemSession session, ArtifactResult artifactResult )
+    {
+        Artifact artifact = artifactResult.getArtifact();
+        ArtifactRepository artifactRepository = artifactResult.getRepository();
+
+        // MRESOLVER-259 PR: use trusted checksum source here as this is NOT transport related!

Review Comment:
   This statement contradicts the constructor args.



##########
maven-resolver-spi/src/main/java/org/eclipse/aether/spi/resolution/ArtifactResolverPostProcessor.java:
##########
@@ -0,0 +1,44 @@
+package org.eclipse.aether.spi.resolution;
+
+/*
+ * 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.
+ */
+
+import java.util.List;
+
+import org.eclipse.aether.RepositorySystemSession;
+import org.eclipse.aether.resolution.ArtifactResult;
+
+/**
+ * Artifact resolver post-resolution processor, is able to hook into resolver and post-process the resolved artifact
+ * results, if needed even produce resolution failure.
+ *
+ * @since TBD
+ */
+public interface ArtifactResolverPostProcessor
+{
+    /**
+     * Receives resolver results just before it would return it to caller. Is able to signal "resolution failure"
+     * by returning {@code true}. When signaling "failure", the passed in {@link ArtifactResult}s should be properly
+     * augmented using {@link ArtifactResult#addException(Exception)} calls.

Review Comment:
   The boolean logic seems inverted here, no? The method name says `postProcess ` so a `true` signals that it has been post-processed, no?



##########
maven-resolver-impl/src/main/java/org/eclipse/aether/internal/impl/resolution/ChecksumArtifactResolverPostProcessor.java:
##########
@@ -0,0 +1,89 @@
+package org.eclipse.aether.internal.impl.resolution;
+
+/*
+ * 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.
+ */
+
+import javax.inject.Inject;
+import javax.inject.Named;
+import javax.inject.Singleton;
+
+import java.util.List;
+
+import org.eclipse.aether.RepositorySystemSession;
+import org.eclipse.aether.artifact.Artifact;
+import org.eclipse.aether.repository.ArtifactRepository;
+import org.eclipse.aether.resolution.ArtifactResult;
+import org.eclipse.aether.spi.connector.checksum.ChecksumAlgorithmFactorySelector;
+import org.eclipse.aether.spi.connector.checksum.ProvidedChecksumsSource;
+
+import static java.util.Objects.requireNonNull;
+
+/**
+ * Artifact resolver processor that verifies the checksums all the resolved artifacts against trusted (provided)
+ * checksums.
+ *
+ * @since TBD
+ */
+@Singleton
+@Named( ChecksumArtifactResolverPostProcessor.NAME )
+public final class ChecksumArtifactResolverPostProcessor
+        extends ArtifactResolverPostProcessorSupport
+{

Review Comment:
   So without this the provided checksums are useless? This is named provided since the Trusted to Provided Adapter supplies them?





> Resolver post-processor
> -----------------------
>
>                 Key: MRESOLVER-276
>                 URL: https://issues.apache.org/jira/browse/MRESOLVER-276
>             Project: Maven Resolver
>          Issue Type: Improvement
>          Components: Resolver
>            Reporter: Tamás Cservenák
>            Assignee: Tamás Cservenák
>            Priority: Major
>             Fix For: resolver-next
>
>
> Introduce new feature, resolver post-processor that is able to post process resolution results just before artifact resolver returns them to caller. Post processor should be able to signal resolution failure (along with errors) just like existing resolution may fail.



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