/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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.apache.kafka.common.network;
import java.io.IOException;
import java.nio.ByteBuffer;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import org.apache.kafka.common.config.AbstractConfig;
import org.apache.kafka.common.metrics.Metrics;
import org.apache.kafka.common.protocol.SecurityProtocol;
import org.apache.kafka.common.utils.MockTime;
import org.apache.kafka.common.utils.Utils;
import org.apache.kafka.test.TestUtils;
/**
* Common utility functions used by transport layer and authenticator tests.
*/
public class NetworkTestUtils {
public static NioEchoServer createEchoServer(ListenerName listenerName, SecurityProtocol securityProtocol,
AbstractConfig serverConfig) throws Exception {
NioEchoServer server = new NioEchoServer(listenerName, securityProtocol, serverConfig, "localhost");
server.start();
return server;
}
public static Selector createSelector(ChannelBuilder channelBuilder) {
return new Selector(5000, new Metrics(), new MockTime(), "MetricGroup", channelBuilder);
}
public static void checkClientConnection(Selector selector, String node, int minMessageSize, int messageCount) throws Exception {
waitForChannelReady(selector, node);
String prefix = TestUtils.randomString(minMessageSize);
int requests = 0;
int responses = 0;
selector.send(new NetworkSend(node, ByteBuffer.wrap((prefix + "-0").getBytes())));
requests++;
while (responses < messageCount) {
selector.poll(0L);
assertEquals("No disconnects should have occurred.", 0, selector.disconnected().size());
for (NetworkReceive receive : selector.completedReceives()) {
assertEquals(prefix + "-" + responses, new String(Utils.toArray(receive.payload())));
responses++;
}
for (int i = 0; i < selector.completedSends().size() && requests < messageCount && selector.isChannelReady(node); i++, requests++) {
selector.send(new NetworkSend(node, ByteBuffer.wrap((prefix + "-" + requests).getBytes())));
}
}
}
public static void waitForChannelReady(Selector selector, String node) throws IOException {
// wait for handshake to finish
int secondsLeft = 30;
while (!selector.isChannelReady(node) && secondsLeft-- > 0) {
selector.poll(1000L);
}
assertTrue(selector.isChannelReady(node));
}
public static void waitForChannelClose(Selector selector, String node, ChannelState channelState) throws IOException {
boolean closed = false;
for (int i = 0; i < 30; i++) {
selector.poll(1000L);
if (selector.channel(node) == null) {
closed = true;
break;
}
}
assertTrue("Channel was not closed by timeout", closed);
assertEquals(channelState, selector.disconnected().get(node));
}
}