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| 1 | +/* |
| 2 | + * Licensed to the Apache Software Foundation (ASF) under one |
| 3 | + * or more contributor license agreements. See the NOTICE file |
| 4 | + * distributed with this work for additional information |
| 5 | + * regarding copyright ownership. The ASF licenses this file |
| 6 | + * to you under the Apache License, Version 2.0 (the |
| 7 | + * "License"); you may not use this file except in compliance |
| 8 | + * with the License. You may obtain a copy of the License at |
| 9 | + * |
| 10 | + * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | + * |
| 12 | + * Unless required by applicable law or agreed to in writing, |
| 13 | + * software distributed under the License is distributed on an |
| 14 | + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| 15 | + * KIND, either express or implied. See the License for the |
| 16 | + * specific language governing permissions and limitations |
| 17 | + * under the License. |
| 18 | + */ |
| 19 | +package org.eclipse.aether.internal.impl; |
| 20 | + |
| 21 | +import javax.inject.Inject; |
| 22 | +import javax.inject.Named; |
| 23 | +import javax.inject.Singleton; |
| 24 | + |
| 25 | +import java.util.HashMap; |
| 26 | +import java.util.Map; |
| 27 | +import java.util.concurrent.TimeUnit; |
| 28 | +import java.util.function.Supplier; |
| 29 | + |
| 30 | +import org.eclipse.aether.ConfigurationProperties; |
| 31 | +import org.eclipse.aether.impl.NamedLockFactorySelector; |
| 32 | +import org.eclipse.aether.named.NamedLockFactory; |
| 33 | +import org.eclipse.aether.util.ConfigUtils; |
| 34 | + |
| 35 | +/** |
| 36 | + * Supplies selected instance of {@link TrackingFileManager} implementation. |
| 37 | + * |
| 38 | + * @since 2.0.18 |
| 39 | + */ |
| 40 | +@Singleton |
| 41 | +@Named |
| 42 | +public class TrackingFileManagerSupplier implements Supplier<TrackingFileManager> { |
| 43 | + public static final String CONFIG_PROPS_PREFIX = ConfigurationProperties.PREFIX_SYSTEM + "trackingFileManager."; |
| 44 | + |
| 45 | + /** |
| 46 | + * Name of the tracking file manager to use. Supported values are "namedLocks" and "legacy". The latter should be |
| 47 | + * used if it is known, that local repository is simultaneously accessed by Maven 3.10+ and older Maven versions. |
| 48 | + * This decision happens early, during boot of the system, hence system properties can be used only as configuration |
| 49 | + * source. |
| 50 | + * |
| 51 | + * @configurationSource {@link System#getProperty(String, String)} |
| 52 | + * @configurationType {@link String} |
| 53 | + * @configurationDefaultValue {@link #DEFAULT_TRACKING_FILE_MANAGER_NAME} |
| 54 | + */ |
| 55 | + public static final String CONFIG_PROP_TRACKING_FILE_MANAGER_NAME = CONFIG_PROPS_PREFIX + "name"; |
| 56 | + |
| 57 | + public static final String DEFAULT_TRACKING_FILE_MANAGER_NAME = "legacy"; |
| 58 | + |
| 59 | + private final TrackingFileManager trackingFileManager; |
| 60 | + |
| 61 | + /** |
| 62 | + * Default constructor, to be used in tests; provides "legacy" tracking file manager only. |
| 63 | + */ |
| 64 | + public TrackingFileManagerSupplier() { |
| 65 | + this.trackingFileManager = new LegacyTrackingFileManager(); |
| 66 | + } |
| 67 | + |
| 68 | + /** |
| 69 | + * Constructor to be used in production. |
| 70 | + */ |
| 71 | + @Inject |
| 72 | + public TrackingFileManagerSupplier(NamedLockFactorySelector selector) { |
| 73 | + // this is early construction; no session, hence we must rely on system properties instead |
| 74 | + Map<String, String> config = new HashMap<>(); |
| 75 | + for (String name : System.getProperties().stringPropertyNames()) { |
| 76 | + config.put(name, System.getProperty(name)); |
| 77 | + } |
| 78 | + String tfmName = ConfigUtils.getString( |
| 79 | + config, DEFAULT_TRACKING_FILE_MANAGER_NAME, CONFIG_PROP_TRACKING_FILE_MANAGER_NAME); |
| 80 | + if ("legacy".equals(tfmName)) { |
| 81 | + this.trackingFileManager = new LegacyTrackingFileManager(); |
| 82 | + } else if ("namedLocks".equals(tfmName)) { |
| 83 | + NamedLockFactory factory = selector.getNamedLockFactory(config); |
| 84 | + long time = selector.getLockWaitTime(config); |
| 85 | + TimeUnit timeUnit = selector.getLockWaitTimeUnit(config); |
| 86 | + this.trackingFileManager = new NamedLocksTrackingFileManager(factory, time, timeUnit); |
| 87 | + } else { |
| 88 | + throw new IllegalArgumentException("Unknown tracking file manager name: " + tfmName); |
| 89 | + } |
| 90 | + } |
| 91 | + |
| 92 | + @Override |
| 93 | + public TrackingFileManager get() { |
| 94 | + return trackingFileManager; |
| 95 | + } |
| 96 | +} |
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