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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.clustercontroller.core.rpc;
import com.yahoo.jrt.Request;
import com.yahoo.jrt.RequestWaiter;
import com.yahoo.jrt.Target;
import com.yahoo.vdslib.state.Node;
import com.yahoo.vdslib.state.NodeType;
import com.yahoo.vespa.clustercontroller.core.*;
import org.junit.Test;
import org.mockito.Mockito;
import java.util.HashSet;
import java.util.Set;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.core.Is.is;
import static org.hamcrest.core.IsNot.not;
import static org.junit.Assert.assertTrue;
import static org.mockito.Matchers.any;
import static org.mockito.Matchers.eq;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
public class RPCCommunicatorTest {
public static final int NODE_STATE_REQUEST_TIMEOUT_INTERVAL_MAX_MS = 10000;
public static final int NODE_STATE_REQUEST_TIMEOUT_INTERVAL_START_PERCENTAGE = 80;
public static final int NODE_STATE_REQUEST_TIMEOUT_INTERVAL_STOP_PERCENTAGE = 95;
public static final int INDEX = 0;
public static final int TEST_ITERATIONS = 500;
public static final int ROUNDTRIP_LATENCY_SECONDS = 2000;
@Test
public void testGenerateNodeStateRequestTimeoutMs() throws Exception {
final RPCCommunicator communicator = new RPCCommunicator(
null /* Timer */,
INDEX,
NODE_STATE_REQUEST_TIMEOUT_INTERVAL_MAX_MS,
NODE_STATE_REQUEST_TIMEOUT_INTERVAL_START_PERCENTAGE,
NODE_STATE_REQUEST_TIMEOUT_INTERVAL_STOP_PERCENTAGE,
0);
int max = -1;
int min = 100000;
final Set<Integer> uniqueTimeoutValues = new HashSet<>();
for (int x = 0; x < TEST_ITERATIONS; x++) {
int timeOutMs = communicator.generateNodeStateRequestTimeoutMs();
min = Math.min(min, timeOutMs);
max = Math.max(max, timeOutMs);
uniqueTimeoutValues.add(timeOutMs);
}
assertTrue(max <= NODE_STATE_REQUEST_TIMEOUT_INTERVAL_MAX_MS *
NODE_STATE_REQUEST_TIMEOUT_INTERVAL_STOP_PERCENTAGE / 100.);
assertThat(min, is(not(max)));
assertTrue(min >= NODE_STATE_REQUEST_TIMEOUT_INTERVAL_START_PERCENTAGE *
NODE_STATE_REQUEST_TIMEOUT_INTERVAL_MAX_MS / 100);
assertTrue(uniqueTimeoutValues.size()> TEST_ITERATIONS/2);
}
@Test
public void testGenerateNodeStateRequestTimeoutMsWithUpdates() throws Exception {
final RPCCommunicator communicator = new RPCCommunicator(null /* Timer */, INDEX, 1, 1, 100, 0);
FleetControllerOptions fleetControllerOptions = new FleetControllerOptions(null /*clustername*/);
fleetControllerOptions.nodeStateRequestTimeoutEarliestPercentage = 100;
fleetControllerOptions.nodeStateRequestTimeoutLatestPercentage = 100;
fleetControllerOptions.nodeStateRequestTimeoutMS = NODE_STATE_REQUEST_TIMEOUT_INTERVAL_MAX_MS;
communicator.propagateOptions(fleetControllerOptions);
int timeOutMs = communicator.generateNodeStateRequestTimeoutMs();
assertThat(timeOutMs, is(NODE_STATE_REQUEST_TIMEOUT_INTERVAL_MAX_MS));
}
@Test
public void testRoundtripLatency() throws Exception {
final Timer timer = new FakeTimer();
final RPCCommunicator communicator = new RPCCommunicator(
timer,
INDEX,
NODE_STATE_REQUEST_TIMEOUT_INTERVAL_MAX_MS,
NODE_STATE_REQUEST_TIMEOUT_INTERVAL_STOP_PERCENTAGE,
100,
ROUNDTRIP_LATENCY_SECONDS);
final NodeInfo nodeInfo = mock(NodeInfo.class);
final Target target = mock(Target.class);
when(target.isValid()).thenReturn(true);
when(nodeInfo.getConnection()).thenReturn(target);
communicator.getNodeState(nodeInfo, null);
Mockito.verify(target).invokeAsync(
(Request)any(),
eq(ROUNDTRIP_LATENCY_SECONDS + NODE_STATE_REQUEST_TIMEOUT_INTERVAL_MAX_MS/1000.0),
(RequestWaiter)any());
}
}
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