Example usage for org.apache.commons.io.input Tailer create

Introduction

In this page you can find the example usage for org.apache.commons.io.input Tailer create.

Prototype

public static Tailer create(File file, TailerListener listener, long delay) 

Source Link

Document

Creates and starts a Tailer for the given file, starting at the beginning of the file

Usage

From source file:com.svds.tailer2kafka.main.Main.java

/**
 * Run tailer until interrupted// w w  w.  j a  v  a 2s.com
 * 
 * @param cmd
 */
public void doWork(CommandLine cmd) throws InterruptedException {
    shutdownThread = new ShutdownThread(this);
    Runtime.getRuntime().addShutdownHook(shutdownThread);
    listener = new MyListener();
    listener.setTopicName(cmd.getOptionValue(TOPICNAME));
    listener.setMetadataBrokerList(cmd.getOptionValue(METADATABROKERLIST));
    tailer = Tailer.create(new File(cmd.getOptionValue(FILENAME)), listener, 500);
    while (true) {

        Thread.sleep(100000);

    }
}

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From source file:net.centro.rtb.monitoringcenter.metrics.system.jvm.GarbageCollectorMetricSet.java

GarbageCollectorMetricSet() {
    this.garbageCollectorMXBeans = ManagementFactory.getGarbageCollectorMXBeans();

    this.minorGcTimer = new Timer();
    this.majorGcTimer = new Timer();

    // Determine the location of the gc log file (note that there's not support for rolling gc logs)
    String gcLogFilePath = null;/*from  www.j ava2s  .c  om*/
    RuntimeMXBean runtimeMXBean = ManagementFactory.getRuntimeMXBean();
    List<String> inputArguments = runtimeMXBean.getInputArguments();
    for (String argument : inputArguments) {
        if (argument.startsWith(LOG_GC_JVM_PARAM)) {
            gcLogFilePath = argument.substring(LOG_GC_JVM_PARAM.length());
            break;
        }
    }

    if (gcLogFilePath != null && !gcLogFilePath.trim().isEmpty()) {
        final File gcLogFile = new File(gcLogFilePath);
        if (gcLogFile.exists()) {
            this.fullCollectionsCounter = new AtomicLong();

            this.gcLogTailer = Tailer.create(gcLogFile, new TailerListenerAdapter() {
                @Override
                public void handle(String line) {
                    if (line != null && line.contains(FULL_GC_LOG_STRING)) {
                        fullCollectionsCounter.incrementAndGet();
                    }
                }
            }, GC_LOG_FILE_TAIL_DELAY_IN_MILLIS);
        }
    }

    // Attach a listener to the GarbageCollectorMXBeans
    this.gcEventListener = new NotificationListener() {
        @Override
        public void handleNotification(Notification notification, Object handback) {
            String notificationType = notification.getType();
            if (notificationType.equals(GarbageCollectionNotificationInfo.GARBAGE_COLLECTION_NOTIFICATION)) {
                CompositeData compositeData = CompositeData.class.cast(notification.getUserData());
                GarbageCollectionNotificationInfo gcNotificationInfo = GarbageCollectionNotificationInfo
                        .from(compositeData);

                if (GC_NOTIFICATION_MINOR_GC_ACTION_STRING.equals(gcNotificationInfo.getGcAction())) {
                    minorGcTimer.update(gcNotificationInfo.getGcInfo().getDuration(), TimeUnit.MILLISECONDS);
                } else if (GC_NOTIFICATION_MAJOR_GC_ACTION_STRING.equals(gcNotificationInfo.getGcAction())) {
                    majorGcTimer.update(gcNotificationInfo.getGcInfo().getDuration(), TimeUnit.MILLISECONDS);
                }
            }
        }
    };

    for (final GarbageCollectorMXBean garbageCollectorMXBean : garbageCollectorMXBeans) {
        if (NotificationEmitter.class.isInstance(garbageCollectorMXBean)) {
            NotificationEmitter emitter = NotificationEmitter.class.cast(garbageCollectorMXBean);
            emitter.addNotificationListener(gcEventListener, null, null);
        }
    }

    // Set up metrics
    Map<String, Metric> metricsByNames = new HashMap<>();

    if (fullCollectionsCounter != null) {
        this.fullCollectionsGauge = new Gauge<Long>() {
            @Override
            public Long getValue() {
                return fullCollectionsCounter.get();
            }
        };
        metricsByNames.put("fullCollections", fullCollectionsGauge);
    }

    metricsByNames.put("majorGcTimer", majorGcTimer);
    metricsByNames.put("minorGcTimer", minorGcTimer);

    List<GarbageCollectorStatus> garbageCollectorStatuses = new ArrayList<>();
    for (final GarbageCollectorMXBean garbageCollectorMXBean : garbageCollectorMXBeans) {
        final String garbageCollectorName = garbageCollectorMXBean.getName();
        final String garbageCollectorNamespace = MetricNamingUtil.join("collectors",
                MetricNamingUtil.sanitize(garbageCollectorName));

        final Gauge<Long> collectionsGauge;
        if (garbageCollectorMXBean.getCollectionCount() >= 0) {
            collectionsGauge = new Gauge<Long>() {
                @Override
                public Long getValue() {
                    return garbageCollectorMXBean.getCollectionCount();
                }
            };
            metricsByNames.put(MetricNamingUtil.join(garbageCollectorNamespace, "collections"),
                    collectionsGauge);
        } else {
            collectionsGauge = null;
        }

        final Gauge<Long> totalCollectionDurationInMillisGauge;
        if (garbageCollectorMXBean.getCollectionTime() >= 0) {
            totalCollectionDurationInMillisGauge = new Gauge<Long>() {
                @Override
                public Long getValue() {
                    return garbageCollectorMXBean.getCollectionTime();
                }
            };
            metricsByNames.put(
                    MetricNamingUtil.join(garbageCollectorNamespace, "totalCollectionDurationInMillis"),
                    totalCollectionDurationInMillisGauge);
        } else {
            totalCollectionDurationInMillisGauge = null;
        }

        garbageCollectorStatuses.add(new GarbageCollectorStatus() {
            @Override
            public String getName() {
                return garbageCollectorName;
            }

            @Override
            public Gauge<Long> getCollectionsGauge() {
                return collectionsGauge;
            }

            @Override
            public Gauge<Long> getTotalCollectionDurationInMillisGauge() {
                return totalCollectionDurationInMillisGauge;
            }
        });
    }
    this.garbageCollectorStatuses = garbageCollectorStatuses;

    this.metricsByNames = metricsByNames;
}

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From source file:org.onehippo.cms7.launcher.LoggingPanel.java

private void startPolling() {
    final TailerListener listener = new TailerListenerAdapter() {
        @Override/*from w  w w.j  a  va  2s. c  om*/
        public void handle(final String line) {
            try {
                loggingDocument.insertString(0, System.lineSeparator(), null);
                loggingDocument.insertString(0, line, null);
            } catch (BadLocationException e) {
                throw new RuntimeException(e);
            }
        }
    };
    final File catalinaLogFile = getCatalinaLogFile();
    final Executor logFilePollingExecutor = Executors.newSingleThreadExecutor();
    logFilePollingExecutor.execute(Tailer.create(catalinaLogFile, listener, 100L));
}

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From source file:org.sonarqube.qa.util.LogsTailer.java

private LogsTailer(Builder builder) {
    logConsumer = new LogConsumer(builder.consumers);
    tailers = builder.files.stream().map(file -> Tailer.create(file, logConsumer, 500))
            .collect(Collectors.toList());
}

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