org.archive.httpclient.HttpRecorderGetMethod Maven / Gradle / Ivy
/*
* 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.httpclient;
import java.io.IOException;
import java.util.logging.Logger;
import org.apache.commons.httpclient.HttpConnection;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.HttpState;
import org.apache.commons.httpclient.methods.GetMethod;
import org.archive.util.Recorder;
/**
* Override of GetMethod that marks the passed HttpRecorder w/ the transition
* from HTTP head to body and that forces a close on the http connection.
*
* The actions done in this subclass used to be done by copying
* org.apache.commons.HttpMethodBase, overlaying our version in place of the
* one that came w/ httpclient. Here is the patch of the difference between
* shipped httpclient code and our mods:
*
* -- -1338,6 +1346,12 --
*
* public void releaseConnection() {
*
* + // HERITRIX always ants the streams closed.
* + if (responseConnection != null)
* + {
* + responseConnection.close();
* + }
* +
* if (responseStream != null) {
* try {
* // FYI - this may indirectly invoke responseBodyConsumed.
* -- -1959,6 +1973,11 --
* this.statusLine = null;
* }
* }
* + // HERITRIX mark transition from header to content.
* + if (this.httpRecorder != null)
* + {
* + this.httpRecorder.markContentBegin();
* + }
* readResponseBody(state, conn);
* processResponseBody(state, conn);
* } catch (IOException e) {
*
*
* We're not supposed to have access to the underlying connection object;
* am only violating contract because see cases where httpclient is skipping
* out w/o cleaning up after itself.
*
* @author stack
* @version $Revision$, $Date$
*/
public class HttpRecorderGetMethod extends GetMethod {
protected static Logger logger =
Logger.getLogger(HttpRecorderGetMethod.class.getName());
/**
* Instance of http recorder method.
*/
protected HttpRecorderMethod httpRecorderMethod = null;
public HttpRecorderGetMethod(String uri, Recorder recorder) {
super(uri);
this.httpRecorderMethod = new HttpRecorderMethod(recorder);
}
protected void readResponseBody(HttpState state, HttpConnection connection)
throws IOException, HttpException {
// We're about to read the body. Mark transition in http recorder.
this.httpRecorderMethod.markContentBegin(connection);
super.readResponseBody(state, connection);
}
protected boolean shouldCloseConnection(HttpConnection conn) {
// Always close connection after each request. As best I can tell, this
// is superfluous -- we've set our client to be HTTP/1.0. Doing this
// out of paranoia.
return true;
}
public int execute(HttpState state, HttpConnection conn)
throws HttpException, IOException {
// Save off the connection so we can close it on our way out in case
// httpclient fails to (We're not supposed to have access to the
// underlying connection object; am only violating contract because
// see cases where httpclient is skipping out w/o cleaning up
// after itself).
this.httpRecorderMethod.setConnection(conn);
return super.execute(state, conn);
}
protected void addProxyConnectionHeader(HttpState state, HttpConnection conn)
throws IOException, HttpException {
super.addProxyConnectionHeader(state, conn);
this.httpRecorderMethod.handleAddProxyConnectionHeader(this);
}
// XXX see https://webarchive.jira.com/browse/HER-2059
// We never call this method with the implied question mark prepended, so
// adding it does the trick, since commons-httpclient will strip it later.
public void setQueryString(String queryString) {
if (queryString != null) {
super.setQueryString('?' + queryString);
} else {
super.setQueryString(queryString);
}
}
}