/*
* Copyright 2013 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
*
* 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.gradle.api.internal.tasks.compile.incremental.jar;
import org.gradle.api.logging.Logger;
import org.gradle.api.logging.Logging;
import org.gradle.util.Clock;
import java.io.File;
public class JarClasspathSnapshotMaker implements JarClasspathSnapshotProvider, JarClasspathSnapshotWriter {
private static final Logger LOG = Logging.getLogger(JarClasspathSnapshotMaker.class);
private final LocalJarClasspathSnapshotStore classpathSnapshotStore;
private final ClasspathJarFinder classpathJarFinder;
private final JarClasspathSnapshotFactory classpathSnapshotFactory;
private JarClasspathSnapshot jarClasspathSnapshot;
public JarClasspathSnapshotMaker(LocalJarClasspathSnapshotStore classpathSnapshotStore, JarClasspathSnapshotFactory classpathSnapshotFactory, ClasspathJarFinder classpathJarFinder) {
this.classpathSnapshotStore = classpathSnapshotStore;
this.classpathSnapshotFactory = classpathSnapshotFactory;
this.classpathJarFinder = classpathJarFinder;
}
public void storeJarSnapshots(Iterable<File> classpath) {
maybeInitialize(classpath); //clients may or may not have already created jar classpath snapshot
Clock clock = new Clock();
classpathSnapshotStore.put(jarClasspathSnapshot.getData());
LOG.info("Written jar classpath snapshot for incremental compilation in {}.", clock.getTime());
}
public JarClasspathSnapshot getJarClasspathSnapshot(Iterable<File> classpath) {
maybeInitialize(classpath); //clients may or may not have already created jar classpath snapshot
return jarClasspathSnapshot;
}
private void maybeInitialize(Iterable<File> classpath) {
if (jarClasspathSnapshot != null) {
return;
}
Clock clock = new Clock();
Iterable<JarArchive> jarArchives = classpathJarFinder.findJarArchives(classpath);
jarClasspathSnapshot = classpathSnapshotFactory.createSnapshot(jarArchives);
int duplicatesCount = jarClasspathSnapshot.getData().getDuplicateClasses().size();
String duplicateClassesMessage = duplicatesCount == 0? "" : ". " + duplicatesCount + " duplicate classes found in classpath (see all with --debug)";
LOG.info("Created jar classpath snapshot for incremental compilation in {}{}.", clock.getTime(), duplicateClassesMessage);
LOG.debug("While calculating jar classpath snapshot {} duplicate classes were found: {}.", duplicatesCount, jarClasspathSnapshot.getData().getDuplicateClasses());
}
}