/**
* Licensed to Cloudera, Inc. under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Cloudera, 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 com.cloudera.flume.master;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import java.io.IOException;
import org.apache.log4j.Logger;
import org.junit.Test;
import com.cloudera.flume.conf.FlumeConfiguration;
import com.cloudera.flume.master.StatusManager.NodeState;
import com.cloudera.flume.util.MockClock;
import com.cloudera.util.Clock;
import com.cloudera.util.NetUtils;
/**
* These test the status manager. It simulates sending heartbeats and does a
* timeout check
*/
public class TestStatusManager {
public static Logger LOG = Logger.getLogger(TestStatusManager.class);
@Test
public void testStatusManagerHeartbeats() throws IOException {
StatusManager stats = new StatusManager();
FlumeConfiguration cfg = FlumeConfiguration.createTestableConfiguration();
Clock.resetDefault();
cfg.set(FlumeConfiguration.WEBAPPS_PATH, "build/webapps");
cfg.set(FlumeConfiguration.MASTER_STORE, "memory");
// avoiding gossip ack manager until it shuts down cleanly.
ConfigStore cfgStore = FlumeMaster.createConfigStore(cfg);
FlumeMaster fm = new FlumeMaster(new CommandManager(), new ConfigManager(
cfgStore), stats, new MasterAckManager(), cfg);
fm.getSpecMan().addLogicalNode("physnode", "foo");
// foo is in state HELLO and has configuration numbered 0
long prev = Clock.unixTime();
boolean needsRefresh = stats.updateHeartbeatStatus(NetUtils.localhost(),
"physnode", "foo", NodeState.HELLO, 0);
LOG.info(stats.getNodeStatuses());
assertTrue(needsRefresh);
StatusManager.NodeStatus ns = stats.getNodeStatuses().get("foo");
assertEquals(0, ns.version);
assertTrue(prev <= ns.lastseen);
assertEquals(NodeState.HELLO, ns.state);
prev = ns.lastseen;
needsRefresh = stats.updateHeartbeatStatus(NetUtils.localhost(),
"physnode", "foo", NodeState.IDLE, 0);
LOG.info(stats.getNodeStatuses());
assertFalse(needsRefresh); // no new data flow version
assertEquals(0, ns.version);
assertTrue(prev <= ns.lastseen);
assertEquals(NodeState.IDLE, ns.state);
prev = ns.lastseen;
needsRefresh = stats.updateHeartbeatStatus(NetUtils.localhost(),
"physnode", "foo", NodeState.ACTIVE, 10);
LOG.info(stats.getNodeStatuses());
assertFalse(needsRefresh); // node has updated version number, but master
// has not
assertEquals(10, ns.version);
assertTrue(prev <= ns.lastseen);
assertEquals(NodeState.ACTIVE, ns.state);
prev = ns.lastseen;
// same message, no refresh
needsRefresh = stats.updateHeartbeatStatus(NetUtils.localhost(),
"physnode", "foo", NodeState.ACTIVE, 10);
LOG.info(stats.getNodeStatuses());
assertFalse(needsRefresh); // this is wierd, is this right?
assertEquals(10, ns.version);
assertTrue(prev <= ns.lastseen);
assertEquals(NodeState.ACTIVE, ns.state);
prev = ns.lastseen;
// regress to an older version,
needsRefresh = stats.updateHeartbeatStatus(NetUtils.localhost(),
"physnode", "foo", NodeState.ACTIVE, 5);
LOG.info(stats.getNodeStatuses());
assertFalse(needsRefresh);
assertEquals(5, ns.version);
assertTrue(prev <= ns.lastseen);
assertEquals(NodeState.ACTIVE, ns.state);
prev = ns.lastseen;
LOG.info(stats.getMetrics());
LOG.info(stats.getName());
}
@Test
public void testCheckup() throws IOException {
MockClock clk = new MockClock(0);
Clock.setClock(clk);
StatusManager stats = new StatusManager();
// foo is in state HELLO and has configuration numbered 0
long prev = Clock.unixTime();
boolean needsRefresh = stats.updateHeartbeatStatus(NetUtils.localhost(),
"physnode", "foo", NodeState.HELLO, 0);
LOG.info(stats.getNodeStatuses());
assertTrue(needsRefresh);
// move forward in time, but not far enough to trigger being lost
clk.forward(FlumeConfiguration.get().getConfigHeartbeatPeriod() * 5);
stats.checkup();
StatusManager.NodeStatus ns = stats.getNodeStatuses().get("foo");
assertEquals(0, ns.version);
assertTrue(prev <= ns.lastseen);
assertEquals(NodeState.HELLO, ns.state);
prev = ns.lastseen;
clk.forward(FlumeConfiguration.get().getConfigHeartbeatPeriod() * 20);
stats.checkup();
ns = stats.getNodeStatuses().get("foo");
assertEquals(0, ns.version);
assertTrue(prev <= ns.lastseen);
assertEquals(NodeState.LOST, ns.state);
prev = ns.lastseen;
LOG.info(ns.toString());
LOG.info(stats.getStatus("foo").toString());
}
}