213 lines
5.6 KiB
Java
213 lines
5.6 KiB
Java
|
/**
|
|||
|
* Copyright (C) 2007 - 2016 52°North Initiative for Geospatial Open Source
|
|||
|
* Software GmbH
|
|||
|
*
|
|||
|
* This program is free software; you can redistribute it and/or modify it
|
|||
|
* under the terms of the GNU General Public License version 2 as published
|
|||
|
* by the Free Software Foundation.
|
|||
|
*
|
|||
|
* If the program is linked with libraries which are licensed under one of
|
|||
|
* the following licenses, the combination of the program with the linked
|
|||
|
* library is not considered a "derivative work" of the program:
|
|||
|
*
|
|||
|
* • Apache License, version 2.0
|
|||
|
* • Apache Software License, version 1.0
|
|||
|
* • GNU Lesser General Public License, version 3
|
|||
|
* • Mozilla Public License, versions 1.0, 1.1 and 2.0
|
|||
|
* • Common Development and Distribution License (CDDL), version 1.0
|
|||
|
*
|
|||
|
* Therefore the distribution of the program linked with libraries licensed
|
|||
|
* under the aforementioned licenses, is permitted by the copyright holders
|
|||
|
* if the distribution is compliant with both the GNU General Public
|
|||
|
* License version 2 and the aforementioned licenses.
|
|||
|
*
|
|||
|
* This program is distributed in the hope that it will be useful, but
|
|||
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
|
|||
|
* Public License for more details.
|
|||
|
*/
|
|||
|
package org.n52.wps.server.request.strategy;
|
|||
|
|
|||
|
import java.io.IOException;
|
|||
|
import java.io.InputStream;
|
|||
|
|
|||
|
import org.apache.http.HttpEntity;
|
|||
|
import org.apache.http.HttpResponse;
|
|||
|
import org.apache.http.client.HttpClient;
|
|||
|
import org.apache.http.client.methods.HttpGet;
|
|||
|
import org.apache.http.client.methods.HttpPost;
|
|||
|
import org.apache.http.entity.StringEntity;
|
|||
|
import org.apache.http.impl.client.DecompressingHttpClient;
|
|||
|
import org.apache.http.impl.client.DefaultHttpClient;
|
|||
|
import org.apache.http.message.BasicHeader;
|
|||
|
import org.n52.wps.server.request.InputHandler;
|
|||
|
|
|||
|
/**
|
|||
|
* An extension of an Input Stream with HTTP Connection abilities.
|
|||
|
* Uses an {@link InputStream} internally. HTTP connection is established
|
|||
|
* in a lazy fashion, i.e. on first read attempt.
|
|||
|
*
|
|||
|
* This class shall prevent timeout issues with I/O streaming in the WPS framework.
|
|||
|
*
|
|||
|
* @deprecated alternative implementation now used, featuring {@link ReferenceInputStream} and
|
|||
|
* corresponding adjustments in {@link InputHandler}
|
|||
|
*
|
|||
|
* @author Matthias Mueller, TU Dresden
|
|||
|
*
|
|||
|
*/
|
|||
|
@Deprecated
|
|||
|
public class LazyHttpInputStream extends InputStream {
|
|||
|
|
|||
|
private InputStream is;
|
|||
|
private boolean initDone = false;
|
|||
|
|
|||
|
// connection parameters
|
|||
|
final boolean useHttpGet;
|
|||
|
final String dataURLString;
|
|||
|
final String body;
|
|||
|
final String mimeType;
|
|||
|
|
|||
|
/**
|
|||
|
* Constructor for HTTP/POST
|
|||
|
*
|
|||
|
* @param dataURLString
|
|||
|
* @param body
|
|||
|
* @param mimeType
|
|||
|
*/
|
|||
|
public LazyHttpInputStream (final String dataURLString, final String body, final String mimeType){
|
|||
|
this.dataURLString = dataURLString;
|
|||
|
this.body = body;
|
|||
|
this.mimeType = mimeType;
|
|||
|
useHttpGet = false;
|
|||
|
}
|
|||
|
|
|||
|
/**
|
|||
|
* Constructor for HTTP/GET
|
|||
|
*
|
|||
|
* @param dataURLString
|
|||
|
* @param body
|
|||
|
* @param mimeType
|
|||
|
*/
|
|||
|
public LazyHttpInputStream (final String dataURLString, final String mimeType){
|
|||
|
this.dataURLString = dataURLString;
|
|||
|
this.body = null;
|
|||
|
this.mimeType = mimeType;
|
|||
|
useHttpGet = true;
|
|||
|
}
|
|||
|
|
|||
|
/**
|
|||
|
* Private init method that makes HTTP connections.
|
|||
|
*
|
|||
|
* @throws IOException
|
|||
|
*/
|
|||
|
private final void init() throws IOException{
|
|||
|
if (useHttpGet){
|
|||
|
is = httpGet(dataURLString, mimeType);
|
|||
|
} else {
|
|||
|
is = httpPost(dataURLString, body, mimeType);
|
|||
|
}
|
|||
|
|
|||
|
initDone = true;
|
|||
|
}
|
|||
|
|
|||
|
|
|||
|
@Override
|
|||
|
public int read() throws IOException {
|
|||
|
if (!initDone){
|
|||
|
init();
|
|||
|
}
|
|||
|
|
|||
|
return is.read();
|
|||
|
}
|
|||
|
|
|||
|
@Override
|
|||
|
public int available() throws IOException {
|
|||
|
if (!initDone){
|
|||
|
init();
|
|||
|
}
|
|||
|
return is.available();
|
|||
|
}
|
|||
|
|
|||
|
@Override
|
|||
|
public void close() throws IOException {
|
|||
|
if (!initDone){
|
|||
|
init();
|
|||
|
}
|
|||
|
is.close();
|
|||
|
}
|
|||
|
|
|||
|
@Override
|
|||
|
public synchronized void mark(int readlimit) {
|
|||
|
if (!initDone){
|
|||
|
try {
|
|||
|
init();
|
|||
|
} catch (IOException e) {
|
|||
|
// silent catch
|
|||
|
}
|
|||
|
}
|
|||
|
is.mark(readlimit);
|
|||
|
}
|
|||
|
|
|||
|
@Override
|
|||
|
public synchronized void reset() throws IOException {
|
|||
|
if (!initDone){
|
|||
|
init();
|
|||
|
}
|
|||
|
is.reset();
|
|||
|
}
|
|||
|
|
|||
|
@Override
|
|||
|
public boolean markSupported() {
|
|||
|
if (!initDone){
|
|||
|
// silent catch
|
|||
|
}
|
|||
|
return is.markSupported();
|
|||
|
}
|
|||
|
|
|||
|
/**
|
|||
|
* Make a GET request using mimeType and href
|
|||
|
*
|
|||
|
* TODO: add support for autoretry, proxy
|
|||
|
*/
|
|||
|
private static InputStream httpGet(final String dataURLString, final String mimeType) throws IOException {
|
|||
|
HttpClient backend = new DefaultHttpClient();
|
|||
|
DecompressingHttpClient httpclient = new DecompressingHttpClient(backend);
|
|||
|
|
|||
|
HttpGet httpget = new HttpGet(dataURLString);
|
|||
|
|
|||
|
if (mimeType != null){
|
|||
|
httpget.addHeader(new BasicHeader("Content-type", mimeType));
|
|||
|
}
|
|||
|
|
|||
|
HttpResponse response = httpclient.execute(httpget);
|
|||
|
HttpEntity entity = response.getEntity();
|
|||
|
return entity.getContent();
|
|||
|
}
|
|||
|
|
|||
|
/**
|
|||
|
* Make a POST request using mimeType and href
|
|||
|
*
|
|||
|
* TODO: add support for autoretry, proxy
|
|||
|
*/
|
|||
|
private static InputStream httpPost(final String dataURLString, final String body, final String mimeType) throws IOException {
|
|||
|
HttpClient backend = new DefaultHttpClient();
|
|||
|
|
|||
|
DecompressingHttpClient httpclient = new DecompressingHttpClient(backend);
|
|||
|
|
|||
|
HttpPost httppost = new HttpPost(dataURLString);
|
|||
|
|
|||
|
if (mimeType != null){
|
|||
|
httppost.addHeader(new BasicHeader("Content-type", mimeType));
|
|||
|
}
|
|||
|
|
|||
|
// set body entity
|
|||
|
HttpEntity postEntity = new StringEntity(body);
|
|||
|
httppost.setEntity(postEntity);
|
|||
|
|
|||
|
HttpResponse response = httpclient.execute(httppost);
|
|||
|
HttpEntity resultEntity = response.getEntity();
|
|||
|
return resultEntity.getContent();
|
|||
|
}
|
|||
|
|
|||
|
}
|