cstamas commented on a change in pull request #131: URL: https://github.com/apache/maven-resolver/pull/131#discussion_r724224501
########## File path: maven-resolver-impl/src/main/java/org/eclipse/aether/internal/impl/synccontext/named/FileLockNamedLockFactory.java ########## @@ -0,0 +1,91 @@ +package org.eclipse.aether.internal.impl.synccontext.named; + +/* + * 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 org.eclipse.aether.RepositorySystemSession; +import org.eclipse.aether.named.support.FileLockNamedLockFactorySupport; +import org.eclipse.aether.named.support.NamedLockSupport; + +import javax.inject.Named; +import javax.inject.Singleton; +import java.io.File; +import java.io.IOException; +import java.io.UncheckedIOException; +import java.nio.file.Path; +import java.nio.file.Paths; +import java.util.concurrent.ConcurrentHashMap; + +/** + * A {@link SessionAwareNamedLockFactory} that uses advisory file locking. + * + * @since TBD + */ +@Singleton +@Named( FileLockNamedLockFactory.NAME ) +public class FileLockNamedLockFactory + extends FileLockNamedLockFactorySupport + implements SessionAwareNamedLockFactory +{ + public static final String NAME = "file-lock"; + + private final ConcurrentHashMap<String, Path> baseDirs; + + public FileLockNamedLockFactory() + { + this.baseDirs = new ConcurrentHashMap<>(); + } + + @Override + public NamedLockSupport getLock( final RepositorySystemSession session, final String name ) + { + File localRepositoryBasedir = session.getLocalRepository().getBasedir(); + Path baseDir = baseDirs.computeIfAbsent( Review comment: Purpose is to get canonical file only once, to cache it. ########## File path: maven-resolver-impl/src/main/java/org/eclipse/aether/internal/impl/synccontext/named/FileLockNamedLockFactory.java ########## @@ -0,0 +1,91 @@ +package org.eclipse.aether.internal.impl.synccontext.named; + +/* + * 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 org.eclipse.aether.RepositorySystemSession; +import org.eclipse.aether.named.support.FileLockNamedLockFactorySupport; +import org.eclipse.aether.named.support.NamedLockSupport; + +import javax.inject.Named; +import javax.inject.Singleton; +import java.io.File; +import java.io.IOException; +import java.io.UncheckedIOException; +import java.nio.file.Path; +import java.nio.file.Paths; +import java.util.concurrent.ConcurrentHashMap; + +/** + * A {@link SessionAwareNamedLockFactory} that uses advisory file locking. + * + * @since TBD + */ +@Singleton +@Named( FileLockNamedLockFactory.NAME ) +public class FileLockNamedLockFactory + extends FileLockNamedLockFactorySupport + implements SessionAwareNamedLockFactory +{ + public static final String NAME = "file-lock"; + + private final ConcurrentHashMap<String, Path> baseDirs; + + public FileLockNamedLockFactory() + { + this.baseDirs = new ConcurrentHashMap<>(); + } + + @Override + public NamedLockSupport getLock( final RepositorySystemSession session, final String name ) + { + File localRepositoryBasedir = session.getLocalRepository().getBasedir(); + Path baseDir = baseDirs.computeIfAbsent( + localRepositoryBasedir.getPath(), k -> + { + try + { + return new File( localRepositoryBasedir, ".locks" ).getCanonicalFile().toPath(); Review comment: That's why is in computeIfAbsent, to calculate it only once. ########## File path: maven-resolver-impl/src/main/java/org/eclipse/aether/internal/impl/synccontext/named/FileLockNamedLockFactory.java ########## @@ -0,0 +1,91 @@ +package org.eclipse.aether.internal.impl.synccontext.named; + +/* + * 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 org.eclipse.aether.RepositorySystemSession; +import org.eclipse.aether.named.support.FileLockNamedLockFactorySupport; +import org.eclipse.aether.named.support.NamedLockSupport; + +import javax.inject.Named; +import javax.inject.Singleton; +import java.io.File; +import java.io.IOException; +import java.io.UncheckedIOException; +import java.nio.file.Path; +import java.nio.file.Paths; +import java.util.concurrent.ConcurrentHashMap; + +/** + * A {@link SessionAwareNamedLockFactory} that uses advisory file locking. + * + * @since TBD + */ +@Singleton +@Named( FileLockNamedLockFactory.NAME ) +public class FileLockNamedLockFactory + extends FileLockNamedLockFactorySupport + implements SessionAwareNamedLockFactory +{ + public static final String NAME = "file-lock"; + + private final ConcurrentHashMap<String, Path> baseDirs; + + public FileLockNamedLockFactory() + { + this.baseDirs = new ConcurrentHashMap<>(); + } + + @Override + public NamedLockSupport getLock( final RepositorySystemSession session, final String name ) + { + File localRepositoryBasedir = session.getLocalRepository().getBasedir(); + Path baseDir = baseDirs.computeIfAbsent( + localRepositoryBasedir.getPath(), k -> + { + try + { + return new File( localRepositoryBasedir, ".locks" ).getCanonicalFile().toPath(); + } + catch ( IOException e ) + { + throw new UncheckedIOException( e ); + } + } + ); + + String fileName = baseDir.resolve( name ).toAbsolutePath().toString(); Review comment: Yes, commit b5328161f298c62ad1b74d3f40d9ae50d7d5dd9e adds a "mapper" that is FS friendly, shamelessly stolen from Takari Local Repo project :smile: Now, how to prevent "mis-configuration" is yet to be done. ########## File path: maven-resolver-impl/src/main/java/org/eclipse/aether/internal/impl/synccontext/named/FileLockNamedLockFactory.java ########## @@ -0,0 +1,91 @@ +package org.eclipse.aether.internal.impl.synccontext.named; + +/* + * 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 org.eclipse.aether.RepositorySystemSession; +import org.eclipse.aether.named.support.FileLockNamedLockFactorySupport; +import org.eclipse.aether.named.support.NamedLockSupport; + +import javax.inject.Named; +import javax.inject.Singleton; +import java.io.File; +import java.io.IOException; +import java.io.UncheckedIOException; +import java.nio.file.Path; +import java.nio.file.Paths; +import java.util.concurrent.ConcurrentHashMap; + +/** + * A {@link SessionAwareNamedLockFactory} that uses advisory file locking. + * + * @since TBD + */ +@Singleton +@Named( FileLockNamedLockFactory.NAME ) +public class FileLockNamedLockFactory + extends FileLockNamedLockFactorySupport + implements SessionAwareNamedLockFactory +{ + public static final String NAME = "file-lock"; + + private final ConcurrentHashMap<String, Path> baseDirs; + + public FileLockNamedLockFactory() + { + this.baseDirs = new ConcurrentHashMap<>(); + } + + @Override + public NamedLockSupport getLock( final RepositorySystemSession session, final String name ) + { + File localRepositoryBasedir = session.getLocalRepository().getBasedir(); + Path baseDir = baseDirs.computeIfAbsent( Review comment: ... and it may change, if executes within mvnd for example :wink: -- This is an automated message from the Apache Git Service. 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