/*
* #%L
* JavaHg
* %%
* Copyright (C) 2011 aragost Trifork ag
* %%
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
* #L%
*/
package com.aragost.javahg;
import java.io.File;
import java.util.List;
import java.util.concurrent.ExecutionException;
import com.aragost.javahg.RepositoryConfiguration.CachePolicy;
import com.aragost.javahg.internals.ExtensionManager;
import com.aragost.javahg.internals.Server;
import com.aragost.javahg.internals.Utils;
import com.google.common.cache.CacheBuilder;
import com.google.common.cache.CacheLoader;
import com.google.common.cache.CacheStats;
import com.google.common.cache.LoadingCache;
/**
* This is a standard Repository with no bundle overlaid
*/
public class BaseRepository extends Repository {
private RepositoryConfiguration configuration;
private final File directory;
private Server server;
private LoadingCache<String, Changeset> nodeChangeSetCache;
BaseRepository(RepositoryConfiguration conf, File directory, boolean performInit, String cloneUrl) {
List<String> extensionArgs = ExtensionManager.getInstance().process(conf.getExtensionClasses());
this.nodeChangeSetCache = createCache(conf.getCachePolicy());
this.configuration = conf;
this.directory = Utils.resolveSymlinks(directory);
String hgBin = this.configuration.getHgBin();
File hgBinFile = new File(hgBin);
if (hgBinFile.isAbsolute() && !hgBinFile.exists()) {
throw new IllegalArgumentException("" + hgBin + " does not exist");
}
this.server = new Server(hgBin);
this.server.setErrorAction(this.configuration.getCodingErrorAction());
this.server.incrementRefCount();
if (performInit) {
this.server.initMecurialRepository(directory);
} else if (cloneUrl != null) {
this.server.execHgCommand(null, "clone", cloneUrl, directory.getAbsolutePath());
}
this.server.start(directory, extensionArgs);
}
@Override
public Changeset changeset(String node) {
if (node.equals(Changeset.NULL_ID)) {
return null;
} else {
try {
return this.nodeChangeSetCache.get(node);
} catch (ExecutionException e) {
throw Utils.asRuntime(e);
}
}
}
@Override
public Server getServer() {
return this.server;
}
@Override
public File getDirectory() {
return this.directory;
}
RepositoryConfiguration getConfiguration() {
return configuration;
}
@Override
public BaseRepository getBaseRepository() {
return this;
}
private LoadingCache<String, Changeset> createCache(CachePolicy cachePolicy) {
CacheLoader<String, Changeset> cacheLoader = new CacheLoader<String, Changeset>() {
@Override
public Changeset load(String key) throws Exception {
return new Changeset(BaseRepository.this, key);
}
};
CacheBuilder<Object, Object> cacheBuilder = CacheBuilder.newBuilder();
switch (cachePolicy) {
case STRONG:
break;
case SOFT:
cacheBuilder.softValues();
break;
case WEAK:
cacheBuilder.weakValues();
break;
case NONE:
// Consider not to have any cache at all
cacheBuilder.maximumSize(0);
break;
}
return cacheBuilder.build(cacheLoader);
}
public CacheStats getCacheStats() {
return this.nodeChangeSetCache.stats();
}
}