/*
* This file is part of the Heritrix web crawler (crawler.archive.org).
*
* Licensed to the Internet Archive (IA) by one or more individual
* contributors.
*
* The IA 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.
*/
package org.archive.modules.recrawl;
import java.util.Map;
import org.archive.bdb.BdbModule;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.Lifecycle;
import com.sleepycat.bind.serial.SerialBinding;
import com.sleepycat.bind.serial.StoredClassCatalog;
import com.sleepycat.bind.tuple.StringBinding;
import com.sleepycat.collections.StoredSortedMap;
import com.sleepycat.je.Database;
import com.sleepycat.je.DatabaseException;
/**
* Common superclass for persisting Processors which directly store/load
* to persistence (as opposed to logging for batch load later).
* @author gojomo
*/
public abstract class PersistOnlineProcessor extends PersistProcessor
implements Lifecycle {
@SuppressWarnings("unused")
private static final long serialVersionUID = -666479480942267268L;
protected BdbModule bdb;
@Autowired
public void setBdbModule(BdbModule bdb) {
this.bdb = bdb;
}
protected String historyDbName = "uri_history";
public String getHistoryDbName() {
return this.historyDbName;
}
public void setHistoryDbName(String name) {
this.historyDbName = name;
}
@SuppressWarnings("unchecked")
protected StoredSortedMap<String,Map> store;
protected Database historyDb;
public PersistOnlineProcessor() {
}
@SuppressWarnings("unchecked")
public void start() {
// TODO: share single store instance between Load and Store processors
// (shared context? EnhancedEnvironment?)
if (isRunning()) {
return;
}
StoredSortedMap<String,Map> historyMap;
try {
StoredClassCatalog classCatalog = bdb.getClassCatalog();
BdbModule.BdbConfig dbConfig = HISTORY_DB_CONFIG;
historyDb = bdb.openDatabase(getHistoryDbName(), dbConfig, true);
historyMap =
new StoredSortedMap<String,Map>(
historyDb,
new StringBinding(),
new SerialBinding<Map>(classCatalog,Map.class),
true);
} catch (DatabaseException e) {
throw new RuntimeException(e);
}
store = historyMap;
}
public boolean isRunning() {
return historyDb != null;
}
public void stop() {
if (!isRunning()) {
return;
}
// leave other cleanup to BdbModule
historyDb = null;
}
}