org.n52.proxy.web.SimpleHttpClient Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of proxy-dao Show documentation
Show all versions of proxy-dao Show documentation
REST SPI Implementation for SOS Proxy.
/*
* Copyright (C) 2013-2017 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.proxy.web;
import java.io.IOException;
import java.net.ConnectException;
import java.nio.charset.StandardCharsets;
import java.util.concurrent.TimeUnit;
import net.jodah.failsafe.Failsafe;
import net.jodah.failsafe.RetryPolicy;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpRequestBase;
import org.apache.http.config.SocketConfig;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.xmlbeans.XmlObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class SimpleHttpClient implements HttpClient {
private static final Logger LOGGER = LoggerFactory.getLogger(SimpleHttpClient.class);
private static final int DEFAULT_CONNECTION_TIMEOUT = 30000;
private static final int DEFAULT_SOCKET_TIMEOUT = 30000;
private static final ContentType CONTENT_TYPE_TEXT_XML = ContentType.create("text/xml", StandardCharsets.UTF_8);
private static final RetryPolicy RETRY_POLICY = new RetryPolicy()
.retryOn(ConnectException.class)
.withDelay(10, TimeUnit.SECONDS)
.withMaxDuration(15, TimeUnit.MINUTES);
private CloseableHttpClient httpclient;
private int connectionTimeout;
private int socketTimeout;
/**
* Creates an instance with timeout = {@value #DEFAULT_CONNECTION_TIMEOUT}
ms.
*/
public SimpleHttpClient() {
this(DEFAULT_CONNECTION_TIMEOUT);
}
/**
* Creates an instance with a given connection timeout.
*
* @param connectionTimeout the connection timeout in milliseconds.
*/
public SimpleHttpClient(int connectionTimeout) {
this(connectionTimeout, DEFAULT_SOCKET_TIMEOUT);
}
/**
* Creates an instance with the given timeouts.
*
* @param connectionTimeout the connection timeout in milliseconds.
* @param socketTimeout the socket timeout in milliseconds.
*/
public SimpleHttpClient(int connectionTimeout, int socketTimeout) {
this.socketTimeout = socketTimeout;
this.connectionTimeout = connectionTimeout;
recreateClient();
}
protected SimpleHttpClient(CloseableHttpClient httpclient) {
this.httpclient = httpclient;
}
@Override
public HttpResponse executeGet(String uri) throws IOException {
LOGGER.debug("executing GET method '{}'", uri);
return executeMethod(new HttpGet(uri));
}
public HttpResponse executePost(String uri, XmlObject payloadToSend) throws IOException {
return executePost(uri, payloadToSend.xmlText(), CONTENT_TYPE_TEXT_XML);
}
@Override
public HttpResponse executePost(String uri, String payloadToSend) throws IOException {
return executePost(uri, payloadToSend, CONTENT_TYPE_TEXT_XML);
}
@Override
public HttpResponse executePost(String uri, String payloadToSend, ContentType contentType) throws IOException {
StringEntity requestEntity = new StringEntity(payloadToSend, contentType);
LOGGER.trace("payload to send: {}", payloadToSend);
return executePost(uri, requestEntity);
}
@Override
public HttpResponse executePost(String uri, HttpEntity payloadToSend) throws IOException {
LOGGER.debug("executing POST method to '{}'.", uri);
HttpPost post = new HttpPost(uri);
post.setEntity(payloadToSend);
return executeMethod(post);
}
@Override
public HttpResponse executeMethod(HttpRequestBase method) throws IOException {
return Failsafe.with(RETRY_POLICY)
.onFailedAttempt(ex -> LOGGER.warn("Could not connect to host; retrying", ex))
.get(() -> httpclient.execute(method));
}
public void setConnectionTimout(int timeout) {
this.connectionTimeout = timeout;
recreateClient();
}
public void setSocketTimout(int timeout) {
this.socketTimeout = timeout;
recreateClient();
}
private void recreateClient() {
if (this.httpclient != null) {
try {
this.httpclient.close();
} catch (IOException ex) {
LOGGER.warn("Error closing client", ex);
}
this.httpclient = null;
}
RequestConfig requestConfig = RequestConfig.custom().setConnectTimeout(this.connectionTimeout).build();
SocketConfig socketConfig = SocketConfig.custom().setSoTimeout(this.socketTimeout).build();
this.httpclient = HttpClientBuilder.create()
.useSystemProperties()
.setDefaultSocketConfig(socketConfig)
.setDefaultRequestConfig(requestConfig)
.build();
}
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy