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/**
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* Copyright (C) 2020 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.taxeditor.service;
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import java.io.IOException;
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import java.net.URI;
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import java.time.LocalDateTime;
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import java.time.format.DateTimeFormatter;
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import org.apache.http.Header;
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import org.apache.http.HttpResponse;
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import org.apache.http.client.HttpClient;
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import org.apache.http.client.methods.HttpPost;
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import org.apache.http.config.Registry;
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import org.apache.http.config.RegistryBuilder;
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import org.apache.http.conn.socket.ConnectionSocketFactory;
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import org.apache.http.conn.socket.PlainConnectionSocketFactory;
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import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
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import org.apache.http.impl.NoConnectionReuseStrategy;
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import org.apache.http.impl.client.HttpClientBuilder;
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import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
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import org.springframework.remoting.httpinvoker.HttpComponentsHttpInvokerRequestExecutor;
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import org.springframework.remoting.httpinvoker.HttpInvokerClientConfiguration;
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import eu.etaxonomy.taxeditor.remoting.RemoteExecutionTimestampsUtil;
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/**
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* HttpInvokerRequestExecutor which extends the spring
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* {@link HttpComponentsHttpInvokerRequestExecutor} by two functionalities:
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*
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* <ol>
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* <li>Records time stamps when sending the request and when receiving the response.</li>
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* <li>Allows custom configuration of the {@link PoolingHttpClientConnectionManager}
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* (see <a href="https://dev.e-taxonomy.eu/redmine/issues/8812">https://dev.e-taxonomy.eu/redmine/issues/8812</a>).
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* </ol>
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*
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* @author a.kohlbecker
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* @since Jan 17, 2020
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*/
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public class TimestampingHttpInvokerRequestExecutor extends HttpComponentsHttpInvokerRequestExecutor {
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private static final int DEFAULT_MAX_TOTAL_CONNECTIONS = 100;
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private static final int DEFAULT_MAX_CONNECTIONS_PER_ROUTE = 5;
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/**
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* Default in PoolingHttpClientConnectionManager is 2000 milliseconds.
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*
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* see https://stackoverflow.com/questions/10558791/apache-httpclient-interim-error-nohttpresponseexception
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*/
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private static final int VALIDATE_AFTER_INACTIVITY = 2000;
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public TimestampingHttpInvokerRequestExecutor() {
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super(createDefaultHttpClient());
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}
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@Override
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protected HttpResponse executeHttpPost(HttpInvokerClientConfiguration config, HttpClient httpClient,
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HttpPost httpPost) throws IOException {
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setExecutionRequestClientTimestamp(httpPost.getURI());
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HttpResponse response = super.executeHttpPost(config, httpClient, httpPost);
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setExecutionResponseHttpHeaderTimestamp(response);
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return response;
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}
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private void setExecutionRequestClientTimestamp(URI requestURI){
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LocalDateTime date = LocalDateTime.now();
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String dateTimeStr = date.format(DateTimeFormatter.ISO_DATE_TIME);
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RemoteExecutionTimestampsUtil.setLastRequestClientTime(dateTimeStr);
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if(requestURI != null){
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RemoteExecutionTimestampsUtil.setLastService(requestURI.toString());
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}
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}
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private void setExecutionResponseHttpHeaderTimestamp(HttpResponse respone){
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Header dateHeader = respone.getFirstHeader("Date");
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if(dateHeader != null){
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RemoteExecutionTimestampsUtil.setLastResponseHttpHeaderTime(dateHeader.getValue());
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}
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}
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private static HttpClient createDefaultHttpClient() {
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Registry<ConnectionSocketFactory> schemeRegistry = RegistryBuilder.<ConnectionSocketFactory>create()
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.register("http", PlainConnectionSocketFactory.getSocketFactory())
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.register("https", SSLConnectionSocketFactory.getSocketFactory())
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.build();
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PoolingHttpClientConnectionManager connectionManager = new PoolingHttpClientConnectionManager(schemeRegistry);
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connectionManager.setMaxTotal(DEFAULT_MAX_TOTAL_CONNECTIONS);
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connectionManager.setDefaultMaxPerRoute(DEFAULT_MAX_CONNECTIONS_PER_ROUTE);
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connectionManager.setValidateAfterInactivity(VALIDATE_AFTER_INACTIVITY);
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return HttpClientBuilder.create()
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.setConnectionManager(connectionManager)
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.setConnectionReuseStrategy(new NoConnectionReuseStrategy()) // see #8812
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.build();
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}
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}
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