TestUtil.java

/*
 * Copyright (c) 2015, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
 *
 * WSO2 Inc. 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.wso2.carbon.transport.http.netty.util;

import com.google.common.io.ByteStreams;
import io.netty.handler.codec.http.HttpMethod;
import org.apache.commons.io.Charsets;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.wso2.carbon.messaging.CarbonMessageProcessor;
import org.wso2.carbon.messaging.exceptions.ServerConnectorException;
import org.wso2.carbon.transport.http.netty.config.ListenerConfiguration;
import org.wso2.carbon.transport.http.netty.config.TransportsConfiguration;
import org.wso2.carbon.transport.http.netty.internal.HTTPTransportContextHolder;
import org.wso2.carbon.transport.http.netty.listener.HTTPServerConnector;
import org.wso2.carbon.transport.http.netty.listener.HTTPTransportListener;
import org.wso2.carbon.transport.http.netty.listener.ServerConnectorController;
import org.wso2.carbon.transport.http.netty.sender.HTTPClientConnector;
import org.wso2.carbon.transport.http.netty.util.server.HTTPServer;

import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URI;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import java.util.concurrent.TimeUnit;

import static org.testng.AssertJUnit.fail;

/**
 * A util class to be used for tests
 */
public class TestUtil {

    private static final Logger log = LoggerFactory.getLogger(TestUtil.class);

    public static final int TEST_SERVER_PORT = 9000;
    public static final String TEST_HOST = "localhost";

    public static final int SERVERS_SETUP_TIME = 10000;
    public static final int SERVERS_SHUTDOWN_WAIT_TIME = 5000;
    public static final long HTTP2_RESPONSE_TIME_OUT = 30;
    public static final TimeUnit HTTP2_RESPONSE_TIME_UNIT = TimeUnit.SECONDS;

    public static final String TRANSPORT_URI = "http://localhost:8490/";

    public static void cleanUp(List<HTTPServerConnector> serverConnectors, HTTPServer httpServer)
            throws ServerConnectorException {
        try {
            Thread.sleep(TestUtil.SERVERS_SHUTDOWN_WAIT_TIME);
        } catch (InterruptedException e) {
            log.error("Thread Interrupted while sleeping ", e);
        }

        for (HTTPServerConnector httpServerConnector : serverConnectors) {
            httpServerConnector.stop();
        }

        serverConnectors.get(0).getServerConnectorController().stop();

        httpServer.shutdown();
        try {
            Thread.sleep(TestUtil.SERVERS_SETUP_TIME);
        } catch (InterruptedException e) {
            log.error("Thread Interrupted while sleeping ", e);
        }
    }

    public static List<HTTPServerConnector> startConnectors(TransportsConfiguration transportsConfiguration,
                                                            CarbonMessageProcessor carbonMessageProcessor) {

        List<HTTPServerConnector> connectors = new ArrayList<>();

        ServerConnectorController serverConnectorController = new ServerConnectorController(transportsConfiguration);

        Set<ListenerConfiguration> listenerConfigurationSet = transportsConfiguration.getListenerConfigurations();

        HTTPClientConnector httpClientConnector =
                new HTTPClientConnector(transportsConfiguration.getSenderConfigurations(),
                        transportsConfiguration.getTransportProperties());

        HTTPTransportContextHolder.getInstance().setMessageProcessor(carbonMessageProcessor);

        carbonMessageProcessor.setClientConnector(httpClientConnector);

        Thread transportRunner = new Thread(() -> {
            try {
                serverConnectorController.start();
            } catch (Exception e) {
                log.error("Unable to start Server Connector Controller ", e);
            }
        });
        transportRunner.start();

        try {
            Thread.sleep(TestUtil.SERVERS_SETUP_TIME);
        } catch (InterruptedException e) {
            log.error("Thread Interrupted while sleeping ", e);
        }

        listenerConfigurationSet.forEach(config -> {
            HTTPServerConnector connector = new HTTPServerConnector(config.getId());
            connector.setListenerConfiguration(config);
            connector.setServerConnectorController(serverConnectorController);
            serverConnectorController.bindInterface(connector);
            connector.setMessageProcessor(carbonMessageProcessor);
            connectors.add(connector);
        });

        return connectors;
    }

    public static HTTPServer startHTTPServer(int port) {
        HTTPServer httpServer = new HTTPServer(port);
        Thread serverThread = new Thread(new Runnable() {
            @Override
            public void run() {
                httpServer.start();
            }
        });
        serverThread.start();
        try {
            Thread.sleep(TestUtil.SERVERS_SETUP_TIME);
        } catch (InterruptedException e) {
            log.error("Thread Interrupted while sleeping ", e);
        }
        return httpServer;
    }

    public static HTTPServer startHTTPServer(int port, String message, String contentType) {
        HTTPServer httpServer = new HTTPServer(port);
        Thread serverThread = new Thread(() -> {
            httpServer.start();
            httpServer.setMessage(message, contentType);
        });
        serverThread.start();
        try {
            Thread.sleep(TestUtil.SERVERS_SETUP_TIME);
        } catch (InterruptedException e) {
            log.error("Thread Interrupted while sleeping ", e);
        }
        return httpServer;
    }

    public static void shutDownCarbonTransport(HTTPTransportListener httpTransportListener) {
        httpTransportListener.stop();
        try {
            Thread.sleep(TestUtil.SERVERS_SETUP_TIME);
        } catch (InterruptedException e) {
            log.error("Thread Interuppted while sleeping ", e);
        }
    }

    public static void shutDownHttpServer(HTTPServer httpServer) {
        httpServer.shutdown();
        try {
            Thread.sleep(TestUtil.SERVERS_SETUP_TIME);
        } catch (InterruptedException e) {
            log.error("Thread Interrupted while sleeping ", e);
        }
    }

    public static String getContent(HttpURLConnection urlConn) throws IOException {
        return new String(ByteStreams.toByteArray(urlConn.getInputStream()), Charsets.UTF_8);
    }

    public static void writeContent(HttpURLConnection urlConn, String content) throws IOException {
        urlConn.getOutputStream().write(content.getBytes(Charsets.UTF_8));
    }

    public static HttpURLConnection request(URI baseURI, String path, String method, boolean keepAlive)
            throws IOException {
        URL url = baseURI.resolve(path).toURL();
        HttpURLConnection urlConn = (HttpURLConnection) url.openConnection();
        if (method.equals(HttpMethod.POST.name()) || method.equals(HttpMethod.PUT.name())) {
            urlConn.setDoOutput(true);
        }
        urlConn.setRequestMethod(method);
        if (!keepAlive) {
            urlConn.setRequestProperty("Connection", "Keep-Alive");
        }

        return urlConn;
    }

    public static void setHeader(HttpURLConnection urlConnection, String key, String value) {
        urlConnection.setRequestProperty(key, value);
    }

    public static void updateMessageProcessor(CarbonMessageProcessor carbonMessageProcessor,
            TransportsConfiguration transportsConfiguration) {

        HTTPClientConnector httpClientConnector =
                new HTTPClientConnector(transportsConfiguration.getSenderConfigurations(),
                        transportsConfiguration.getTransportProperties());

        carbonMessageProcessor.setClientConnector(httpClientConnector);
        HTTPTransportContextHolder.getInstance().setMessageProcessor(carbonMessageProcessor);
    }

    public static void handleException(String msg, Exception ex) {
        log.error(msg, ex);
        fail(msg);
    }

}