org.apache.accumulo.test.functional.MonitorLoggingIT.java Source code

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Here is the source code for org.apache.accumulo.test.functional.MonitorLoggingIT.java

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/*
 * 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.accumulo.test.functional;

import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;

import java.io.File;
import java.net.URL;

import org.apache.accumulo.core.client.Connector;
import org.apache.accumulo.core.client.IteratorSetting;
import org.apache.accumulo.core.client.Scanner;
import org.apache.accumulo.core.security.Authorizations;
import org.apache.accumulo.minicluster.impl.MiniAccumuloConfigImpl;
import org.apache.accumulo.monitor.Monitor;
import org.apache.accumulo.server.util.Admin;
import org.apache.commons.io.FileUtils;
import org.apache.zookeeper.KeeperException;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class MonitorLoggingIT extends ConfigurableMacBase {
    private static final Logger log = LoggerFactory.getLogger(MonitorLoggingIT.class);

    @Override
    public void beforeClusterStart(MiniAccumuloConfigImpl cfg) throws Exception {
        cfg.setNumTservers(1);
        File confDir = cfg.getConfDir();
        try {
            FileUtils.copyInputStreamToFile(MonitorLoggingIT.class.getResourceAsStream("/conf/generic_logger.xml"),
                    new File(confDir, "generic_logger.xml"));
            FileUtils.copyInputStreamToFile(MonitorLoggingIT.class.getResourceAsStream("/conf/monitor_logger.xml"),
                    new File(confDir, "monitor_logger.xml"));
        } catch (Exception e) {
            log.error("Failed to copy Log4J XML files to conf dir", e);
        }
    }

    private static final int NUM_LOCATION_PASSES = 5;
    private static final int LOCATION_DELAY_SECS = 5;

    @Override
    protected int defaultTimeoutSeconds() {
        return 30 + ((NUM_LOCATION_PASSES + 2) * LOCATION_DELAY_SECS);
    }

    @Test
    public void logToMonitor() throws Exception {
        // Start the monitor.
        log.debug("Starting Monitor");
        Process monitor = cluster.exec(Monitor.class);

        // Get monitor location to ensure it is running.
        String monitorLocation = null;
        for (int i = 0; i < NUM_LOCATION_PASSES; i++) {
            Thread.sleep(LOCATION_DELAY_SECS * 1000);
            try {
                monitorLocation = getMonitor();
                break;
            } catch (KeeperException e) {
                log.debug("Monitor not up yet, trying again in " + LOCATION_DELAY_SECS + " secs");
            }
        }
        assertNotNull("Monitor failed to start within " + (LOCATION_DELAY_SECS * NUM_LOCATION_PASSES) + " secs",
                monitorLocation);
        log.debug("Monitor running at " + monitorLocation);

        // The tserver has to observe that the log-forwarding address
        // changed in ZooKeeper. If we cause the error before the tserver
        // updates, we'll never see the error on the monitor.
        Thread.sleep(10000);

        // Attempt a scan with an invalid iterator to force a log message in the monitor.
        try {
            Connector c = getConnector();
            Scanner s = c.createScanner("accumulo.root", new Authorizations());
            IteratorSetting cfg = new IteratorSetting(100, "incorrect", "java.lang.String");
            s.addScanIterator(cfg);
            s.iterator().next();
        } catch (RuntimeException e) {
            // expected, the iterator was bad
        }

        String result = "";
        while (true) {
            Thread.sleep(LOCATION_DELAY_SECS * 1000); // extra precaution to ensure monitor has opportunity to log

            // Verify messages were received at the monitor.
            URL url = new URL("http://" + monitorLocation + "/log");
            log.debug("Fetching web page " + url);
            result = FunctionalTestUtils.readAll(url.openStream());
            if (result.contains("<pre class='logevent'>")) {
                break;
            }
            log.debug("No messages found, waiting a little longer...");
        }

        assertTrue("No log messages found", result.contains("<pre class='logevent'>"));

        // Shutdown cleanly.
        log.debug("Stopping mini accumulo cluster");
        Process shutdown = cluster.exec(Admin.class, "stopAll");
        shutdown.waitFor();
        assertTrue(shutdown.exitValue() == 0);
        log.debug("success!");
        monitor.destroy();
    }
}