/*
* Zed Attack Proxy (ZAP) and its related class files.
*
* ZAP is an HTTP/HTTPS proxy for assessing web application security.
*
* Copyright 2014 The ZAP Development Team
*
* 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.zaproxy.zap.view.messagecontainer.http;
import java.util.AbstractList;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.apache.log4j.Logger;
import org.parosproxy.paros.db.DatabaseException;
import org.parosproxy.paros.model.HistoryReference;
import org.parosproxy.paros.network.HttpMalformedHeaderException;
import org.parosproxy.paros.network.HttpMessage;
/**
* An unmodifiable {@code List} of persisted {@code HttpMessage}s which internally use {@code HistoryReference}s to load them
* from database.
*
* @since 2.3.0
* @see HttpMessage
* @see HistoryReference
*/
public class PersistedHttpMessagesList extends AbstractList<HttpMessage> {
private static final Logger LOGGER = Logger.getLogger(PersistedHttpMessagesList.class);
private final List<HistoryReference> historyReferences;
/**
* Constructs an {@code PersistedHttpMessagesList} with the given {@code historyReferences}.
*
* @param historyReferences the history references used to load the messages from database
*/
public PersistedHttpMessagesList(List<HistoryReference> historyReferences) {
super();
if (historyReferences == null || historyReferences.isEmpty()) {
this.historyReferences = Collections.emptyList();
} else {
this.historyReferences = Collections.unmodifiableList(new ArrayList<>(historyReferences));
}
}
/**
* {@inheritDoc}
* <p>
* <strong>Note:</strong> The returned message will be {@code null} if an error occurred while loading the message from the
* database.
*/
@Override
public HttpMessage get(int index) {
try {
return historyReferences.get(index).getHttpMessage();
} catch (HttpMalformedHeaderException | DatabaseException e) {
LOGGER.error("Failed to get the message from DB: " + e.getMessage(), e);
}
return null;
}
@Override
public int size() {
return historyReferences.size();
}
}