Examples with JvmStats org.opensearch.monitor.jvm.JvmStats used on opensource projects

Example 1 with JvmStats

use of org.opensearch.monitor.jvm.JvmStats in project OpenSearch by opensearch-project.

the class NodeStatsTests method createNodeStats.

public static NodeStats createNodeStats() {
    DiscoveryNode node = new DiscoveryNode("test_node", buildNewFakeTransportAddress(), emptyMap(), emptySet(), VersionUtils.randomVersion(random()));
    OsStats osStats = null;
    if (frequently()) {
        double[] loadAverages = new double[3];
        for (int i = 0; i < 3; i++) {
            loadAverages[i] = randomBoolean() ? randomDouble() : -1;
        }
        long memTotal = randomNonNegativeLong();
        long swapTotal = randomNonNegativeLong();
        osStats = new OsStats(System.currentTimeMillis(), new OsStats.Cpu(randomShort(), loadAverages), new OsStats.Mem(memTotal, randomLongBetween(0, memTotal)), new OsStats.Swap(swapTotal, randomLongBetween(0, swapTotal)), new OsStats.Cgroup(randomAlphaOfLength(8), randomNonNegativeLong(), randomAlphaOfLength(8), randomNonNegativeLong(), randomNonNegativeLong(), new OsStats.Cgroup.CpuStat(randomNonNegativeLong(), randomNonNegativeLong(), randomNonNegativeLong()), randomAlphaOfLength(8), Long.toString(randomNonNegativeLong()), Long.toString(randomNonNegativeLong())));
    }
    ProcessStats processStats = frequently() ? new ProcessStats(randomNonNegativeLong(), randomNonNegativeLong(), randomNonNegativeLong(), new ProcessStats.Cpu(randomShort(), randomNonNegativeLong()), new ProcessStats.Mem(randomNonNegativeLong())) : null;
    JvmStats jvmStats = null;
    if (frequently()) {
        int numMemoryPools = randomIntBetween(0, 10);
        List<JvmStats.MemoryPool> memoryPools = new ArrayList<>(numMemoryPools);
        for (int i = 0; i < numMemoryPools; i++) {
            memoryPools.add(new JvmStats.MemoryPool(randomAlphaOfLengthBetween(3, 10), randomNonNegativeLong(), randomNonNegativeLong(), randomNonNegativeLong(), randomNonNegativeLong(), new JvmStats.MemoryPoolGcStats(randomNonNegativeLong(), randomNonNegativeLong())));
        }
        JvmStats.Threads threads = new JvmStats.Threads(randomIntBetween(1, 1000), randomIntBetween(1, 1000));
        int numGarbageCollectors = randomIntBetween(0, 10);
        JvmStats.GarbageCollector[] garbageCollectorsArray = new JvmStats.GarbageCollector[numGarbageCollectors];
        for (int i = 0; i < numGarbageCollectors; i++) {
            garbageCollectorsArray[i] = new JvmStats.GarbageCollector(randomAlphaOfLengthBetween(3, 10), randomNonNegativeLong(), randomNonNegativeLong());
        }
        JvmStats.GarbageCollectors garbageCollectors = new JvmStats.GarbageCollectors(garbageCollectorsArray);
        int numBufferPools = randomIntBetween(0, 10);
        List<JvmStats.BufferPool> bufferPoolList = new ArrayList<>();
        for (int i = 0; i < numBufferPools; i++) {
            bufferPoolList.add(new JvmStats.BufferPool(randomAlphaOfLengthBetween(3, 10), randomNonNegativeLong(), randomNonNegativeLong(), randomNonNegativeLong()));
        }
        JvmStats.Classes classes = new JvmStats.Classes(randomNonNegativeLong(), randomNonNegativeLong(), randomNonNegativeLong());
        jvmStats = frequently() ? new JvmStats(randomNonNegativeLong(), randomNonNegativeLong(), new JvmStats.Mem(randomNonNegativeLong(), randomNonNegativeLong(), randomNonNegativeLong(), randomNonNegativeLong(), randomNonNegativeLong(), memoryPools), threads, garbageCollectors, randomBoolean() ? Collections.emptyList() : bufferPoolList, classes) : null;
    }
    ThreadPoolStats threadPoolStats = null;
    if (frequently()) {
        int numThreadPoolStats = randomIntBetween(0, 10);
        List<ThreadPoolStats.Stats> threadPoolStatsList = new ArrayList<>();
        for (int i = 0; i < numThreadPoolStats; i++) {
            threadPoolStatsList.add(new ThreadPoolStats.Stats(randomAlphaOfLengthBetween(3, 10), randomIntBetween(1, 1000), randomIntBetween(1, 1000), randomIntBetween(1, 1000), randomNonNegativeLong(), randomIntBetween(1, 1000), randomIntBetween(1, 1000)));
        }
        threadPoolStats = new ThreadPoolStats(threadPoolStatsList);
    }
    FsInfo fsInfo = null;
    if (frequently()) {
        int numDeviceStats = randomIntBetween(0, 10);
        FsInfo.DeviceStats[] deviceStatsArray = new FsInfo.DeviceStats[numDeviceStats];
        for (int i = 0; i < numDeviceStats; i++) {
            FsInfo.DeviceStats previousDeviceStats = randomBoolean() ? null : new FsInfo.DeviceStats(randomInt(), randomInt(), randomAlphaOfLengthBetween(3, 10), randomNonNegativeLong(), randomNonNegativeLong(), randomNonNegativeLong(), randomNonNegativeLong(), null);
            deviceStatsArray[i] = new FsInfo.DeviceStats(randomInt(), randomInt(), randomAlphaOfLengthBetween(3, 10), randomNonNegativeLong(), randomNonNegativeLong(), randomNonNegativeLong(), randomNonNegativeLong(), previousDeviceStats);
        }
        FsInfo.IoStats ioStats = new FsInfo.IoStats(deviceStatsArray);
        int numPaths = randomIntBetween(0, 10);
        FsInfo.Path[] paths = new FsInfo.Path[numPaths];
        for (int i = 0; i < numPaths; i++) {
            paths[i] = new FsInfo.Path(randomAlphaOfLengthBetween(3, 10), randomBoolean() ? randomAlphaOfLengthBetween(3, 10) : null, randomNonNegativeLong(), randomNonNegativeLong(), randomNonNegativeLong());
        }
        fsInfo = new FsInfo(randomNonNegativeLong(), ioStats, paths);
    }
    TransportStats transportStats = frequently() ? new TransportStats(randomNonNegativeLong(), randomNonNegativeLong(), randomNonNegativeLong(), randomNonNegativeLong(), randomNonNegativeLong(), randomNonNegativeLong()) : null;
    HttpStats httpStats = frequently() ? new HttpStats(randomNonNegativeLong(), randomNonNegativeLong()) : null;
    AllCircuitBreakerStats allCircuitBreakerStats = null;
    if (frequently()) {
        int numCircuitBreakerStats = randomIntBetween(0, 10);
        CircuitBreakerStats[] circuitBreakerStatsArray = new CircuitBreakerStats[numCircuitBreakerStats];
        for (int i = 0; i < numCircuitBreakerStats; i++) {
            circuitBreakerStatsArray[i] = new CircuitBreakerStats(randomAlphaOfLengthBetween(3, 10), randomNonNegativeLong(), randomNonNegativeLong(), randomDouble(), randomNonNegativeLong());
        }
        allCircuitBreakerStats = new AllCircuitBreakerStats(circuitBreakerStatsArray);
    }
    ScriptStats scriptStats = frequently() ? new ScriptStats(randomNonNegativeLong(), randomNonNegativeLong(), randomNonNegativeLong()) : null;
    DiscoveryStats discoveryStats = frequently() ? new DiscoveryStats(randomBoolean() ? new PendingClusterStateStats(randomInt(), randomInt(), randomInt()) : null, randomBoolean() ? new PublishClusterStateStats(randomNonNegativeLong(), randomNonNegativeLong(), randomNonNegativeLong()) : null) : null;
    IngestStats ingestStats = null;
    if (frequently()) {
        IngestStats.Stats totalStats = new IngestStats.Stats(randomNonNegativeLong(), randomNonNegativeLong(), randomNonNegativeLong(), randomNonNegativeLong());
        int numPipelines = randomIntBetween(0, 10);
        int numProcessors = randomIntBetween(0, 10);
        List<IngestStats.PipelineStat> ingestPipelineStats = new ArrayList<>(numPipelines);
        Map<String, List<IngestStats.ProcessorStat>> ingestProcessorStats = new HashMap<>(numPipelines);
        for (int i = 0; i < numPipelines; i++) {
            String pipelineId = randomAlphaOfLengthBetween(3, 10);
            ingestPipelineStats.add(new IngestStats.PipelineStat(pipelineId, new IngestStats.Stats(randomNonNegativeLong(), randomNonNegativeLong(), randomNonNegativeLong(), randomNonNegativeLong())));
            List<IngestStats.ProcessorStat> processorPerPipeline = new ArrayList<>(numProcessors);
            for (int j = 0; j < numProcessors; j++) {
                IngestStats.Stats processorStats = new IngestStats.Stats(randomNonNegativeLong(), randomNonNegativeLong(), randomNonNegativeLong(), randomNonNegativeLong());
                processorPerPipeline.add(new IngestStats.ProcessorStat(randomAlphaOfLengthBetween(3, 10), randomAlphaOfLengthBetween(3, 10), processorStats));
            }
            ingestProcessorStats.put(pipelineId, processorPerPipeline);
        }
        ingestStats = new IngestStats(totalStats, ingestPipelineStats, ingestProcessorStats);
    }
    AdaptiveSelectionStats adaptiveSelectionStats = null;
    if (frequently()) {
        int numNodes = randomIntBetween(0, 10);
        Map<String, Long> nodeConnections = new HashMap<>();
        Map<String, ResponseCollectorService.ComputedNodeStats> nodeStats = new HashMap<>();
        for (int i = 0; i < numNodes; i++) {
            String nodeId = randomAlphaOfLengthBetween(3, 10);
            // add outgoing connection info
            if (frequently()) {
                nodeConnections.put(nodeId, randomLongBetween(0, 100));
            }
            // add node calculations
            if (frequently()) {
                ResponseCollectorService.ComputedNodeStats stats = new ResponseCollectorService.ComputedNodeStats(nodeId, randomIntBetween(1, 10), randomIntBetween(0, 2000), randomDoubleBetween(1.0, 10000000.0, true), randomDoubleBetween(1.0, 10000000.0, true));
                nodeStats.put(nodeId, stats);
            }
        }
        adaptiveSelectionStats = new AdaptiveSelectionStats(nodeConnections, nodeStats);
    }
    ScriptCacheStats scriptCacheStats = scriptStats != null ? scriptStats.toScriptCacheStats() : null;
    // TODO NodeIndicesStats are not tested here, way too complicated to create, also they need to be migrated to Writeable yet
    return new NodeStats(node, randomNonNegativeLong(), null, osStats, processStats, jvmStats, threadPoolStats, fsInfo, transportStats, httpStats, allCircuitBreakerStats, scriptStats, discoveryStats, ingestStats, adaptiveSelectionStats, scriptCacheStats, null, null);
}

Example 2 with JvmStats

use of org.opensearch.monitor.jvm.JvmStats in project fess by codelibs.

the class SystemMonitorTarget method appendJvmStats.

private void appendJvmStats(final StringBuilder buf) {
    buf.append("\"jvm\":{");
    final JvmStats jvmStats = JvmStats.jvmStats();
    final Mem mem = jvmStats.getMem();
    buf.append("\"memory\":{");
    buf.append("\"heap\":{");
    append(buf, "used", () -> mem.getHeapUsed().getBytes()).append(',');
    append(buf, "committed", () -> mem.getHeapCommitted().getBytes()).append(',');
    append(buf, "max", () -> mem.getHeapMax().getBytes()).append(',');
    append(buf, "percent", () -> mem.getHeapUsedPercent());
    buf.append("},");
    buf.append("\"non_heap\":{");
    append(buf, "used", () -> mem.getNonHeapUsed().getBytes()).append(',');
    append(buf, "committed", () -> mem.getNonHeapCommitted().getBytes());
    buf.append('}');
    buf.append("},");
    final List<BufferPool> bufferPools = jvmStats.getBufferPools();
    buf.append("\"pools\":{");
    buf.append(bufferPools.stream().map(p -> {
        final StringBuilder b = new StringBuilder();
        b.append('"').append(StringEscapeUtils.escapeJson(p.getName())).append("\":{");
        append(b, "count", () -> p.getCount()).append(',');
        append(b, "used", () -> p.getUsed().getBytes()).append(',');
        append(b, "capacity", () -> p.getTotalCapacity().getBytes()).append('}');
        return b.toString();
    }).collect(Collectors.joining(",")));
    buf.append("},");
    final GarbageCollectors gc = jvmStats.getGc();
    buf.append("\"gc\":{");
    buf.append(Arrays.stream(gc.getCollectors()).map(c -> {
        final StringBuilder b = new StringBuilder();
        b.append('"').append(StringEscapeUtils.escapeJson(c.getName())).append("\":{");
        append(b, "count", () -> c.getCollectionCount()).append(',');
        append(b, "time", () -> c.getCollectionTime().getMillis()).append('}');
        return b.toString();
    }).collect(Collectors.joining(",")));
    buf.append("},");
    final Threads threads = jvmStats.getThreads();
    buf.append("\"threads\":{");
    append(buf, "count", () -> threads.getCount()).append(',');
    append(buf, "peak", () -> threads.getPeakCount());
    buf.append("},");
    final Classes classes = jvmStats.getClasses();
    buf.append("\"classes\":{");
    append(buf, "loaded", () -> classes.getLoadedClassCount()).append(',');
    append(buf, "total_loaded", () -> classes.getTotalLoadedClassCount()).append(',');
    append(buf, "unloaded", () -> classes.getUnloadedClassCount());
    buf.append("},");
    append(buf, "uptime", () -> jvmStats.getUptime().getMillis());
    buf.append("},");
}

Example 3 with JvmStats

use of org.opensearch.monitor.jvm.JvmStats in project OpenSearch by opensearch-project.

the class RestNodesAction method buildTable.

Table buildTable(boolean fullId, RestRequest req, ClusterStateResponse state, NodesInfoResponse nodesInfo, NodesStatsResponse nodesStats) {
    DiscoveryNodes nodes = state.getState().nodes();
    String masterId = nodes.getMasterNodeId();
    Table table = getTableWithHeader(req);
    for (DiscoveryNode node : nodes) {
        NodeInfo info = nodesInfo.getNodesMap().get(node.getId());
        NodeStats stats = nodesStats.getNodesMap().get(node.getId());
        JvmInfo jvmInfo = info == null ? null : info.getInfo(JvmInfo.class);
        JvmStats jvmStats = stats == null ? null : stats.getJvm();
        FsInfo fsInfo = stats == null ? null : stats.getFs();
        OsStats osStats = stats == null ? null : stats.getOs();
        ProcessStats processStats = stats == null ? null : stats.getProcess();
        NodeIndicesStats indicesStats = stats == null ? null : stats.getIndices();
        table.startRow();
        table.addCell(fullId ? node.getId() : Strings.substring(node.getId(), 0, 4));
        table.addCell(info == null ? null : info.getInfo(ProcessInfo.class).getId());
        table.addCell(node.getHostAddress());
        table.addCell(node.getAddress().address().getPort());
        final HttpInfo httpInfo = info == null ? null : info.getInfo(HttpInfo.class);
        if (httpInfo != null) {
            TransportAddress transportAddress = httpInfo.getAddress().publishAddress();
            table.addCell(NetworkAddress.format(transportAddress.address()));
        } else {
            table.addCell("-");
        }
        table.addCell(node.getVersion().toString());
        table.addCell(info == null ? null : info.getBuild().type().displayName());
        table.addCell(info == null ? null : info.getBuild().hash());
        table.addCell(jvmInfo == null ? null : jvmInfo.version());
        ByteSizeValue diskTotal = null;
        ByteSizeValue diskUsed = null;
        ByteSizeValue diskAvailable = null;
        String diskUsedPercent = null;
        if (fsInfo != null) {
            diskTotal = fsInfo.getTotal().getTotal();
            diskAvailable = fsInfo.getTotal().getAvailable();
            diskUsed = new ByteSizeValue(diskTotal.getBytes() - diskAvailable.getBytes());
            double diskUsedRatio = diskTotal.getBytes() == 0 ? 1.0 : (double) diskUsed.getBytes() / diskTotal.getBytes();
            diskUsedPercent = String.format(Locale.ROOT, "%.2f", 100.0 * diskUsedRatio);
        }
        table.addCell(diskTotal);
        table.addCell(diskUsed);
        table.addCell(diskAvailable);
        table.addCell(diskUsedPercent);
        table.addCell(jvmStats == null ? null : jvmStats.getMem().getHeapUsed());
        table.addCell(jvmStats == null ? null : jvmStats.getMem().getHeapUsedPercent());
        table.addCell(jvmInfo == null ? null : jvmInfo.getMem().getHeapMax());
        table.addCell(osStats == null ? null : osStats.getMem() == null ? null : osStats.getMem().getUsed());
        table.addCell(osStats == null ? null : osStats.getMem() == null ? null : osStats.getMem().getUsedPercent());
        table.addCell(osStats == null ? null : osStats.getMem() == null ? null : osStats.getMem().getTotal());
        table.addCell(processStats == null ? null : processStats.getOpenFileDescriptors());
        table.addCell(processStats == null ? null : calculatePercentage(processStats.getOpenFileDescriptors(), processStats.getMaxFileDescriptors()));
        table.addCell(processStats == null ? null : processStats.getMaxFileDescriptors());
        table.addCell(osStats == null ? null : Short.toString(osStats.getCpu().getPercent()));
        boolean hasLoadAverage = osStats != null && osStats.getCpu().getLoadAverage() != null;
        table.addCell(!hasLoadAverage || osStats.getCpu().getLoadAverage()[0] == -1 ? null : String.format(Locale.ROOT, "%.2f", osStats.getCpu().getLoadAverage()[0]));
        table.addCell(!hasLoadAverage || osStats.getCpu().getLoadAverage()[1] == -1 ? null : String.format(Locale.ROOT, "%.2f", osStats.getCpu().getLoadAverage()[1]));
        table.addCell(!hasLoadAverage || osStats.getCpu().getLoadAverage()[2] == -1 ? null : String.format(Locale.ROOT, "%.2f", osStats.getCpu().getLoadAverage()[2]));
        table.addCell(jvmStats == null ? null : jvmStats.getUptime());
        final String roles;
        if (node.getRoles().isEmpty()) {
            roles = "-";
        } else {
            roles = node.getRoles().stream().map(DiscoveryNodeRole::roleNameAbbreviation).sorted().collect(Collectors.joining());
        }
        table.addCell(roles);
        table.addCell(masterId == null ? "x" : masterId.equals(node.getId()) ? "*" : "-");
        table.addCell(node.getName());
        CompletionStats completionStats = indicesStats == null ? null : stats.getIndices().getCompletion();
        table.addCell(completionStats == null ? null : completionStats.getSize());
        FieldDataStats fdStats = indicesStats == null ? null : stats.getIndices().getFieldData();
        table.addCell(fdStats == null ? null : fdStats.getMemorySize());
        table.addCell(fdStats == null ? null : fdStats.getEvictions());
        QueryCacheStats fcStats = indicesStats == null ? null : indicesStats.getQueryCache();
        table.addCell(fcStats == null ? null : fcStats.getMemorySize());
        table.addCell(fcStats == null ? null : fcStats.getEvictions());
        table.addCell(fcStats == null ? null : fcStats.getHitCount());
        table.addCell(fcStats == null ? null : fcStats.getMissCount());
        RequestCacheStats qcStats = indicesStats == null ? null : indicesStats.getRequestCache();
        table.addCell(qcStats == null ? null : qcStats.getMemorySize());
        table.addCell(qcStats == null ? null : qcStats.getEvictions());
        table.addCell(qcStats == null ? null : qcStats.getHitCount());
        table.addCell(qcStats == null ? null : qcStats.getMissCount());
        FlushStats flushStats = indicesStats == null ? null : indicesStats.getFlush();
        table.addCell(flushStats == null ? null : flushStats.getTotal());
        table.addCell(flushStats == null ? null : flushStats.getTotalTime());
        GetStats getStats = indicesStats == null ? null : indicesStats.getGet();
        table.addCell(getStats == null ? null : getStats.current());
        table.addCell(getStats == null ? null : getStats.getTime());
        table.addCell(getStats == null ? null : getStats.getCount());
        table.addCell(getStats == null ? null : getStats.getExistsTime());
        table.addCell(getStats == null ? null : getStats.getExistsCount());
        table.addCell(getStats == null ? null : getStats.getMissingTime());
        table.addCell(getStats == null ? null : getStats.getMissingCount());
        IndexingStats indexingStats = indicesStats == null ? null : indicesStats.getIndexing();
        table.addCell(indexingStats == null ? null : indexingStats.getTotal().getDeleteCurrent());
        table.addCell(indexingStats == null ? null : indexingStats.getTotal().getDeleteTime());
        table.addCell(indexingStats == null ? null : indexingStats.getTotal().getDeleteCount());
        table.addCell(indexingStats == null ? null : indexingStats.getTotal().getIndexCurrent());
        table.addCell(indexingStats == null ? null : indexingStats.getTotal().getIndexTime());
        table.addCell(indexingStats == null ? null : indexingStats.getTotal().getIndexCount());
        table.addCell(indexingStats == null ? null : indexingStats.getTotal().getIndexFailedCount());
        MergeStats mergeStats = indicesStats == null ? null : indicesStats.getMerge();
        table.addCell(mergeStats == null ? null : mergeStats.getCurrent());
        table.addCell(mergeStats == null ? null : mergeStats.getCurrentNumDocs());
        table.addCell(mergeStats == null ? null : mergeStats.getCurrentSize());
        table.addCell(mergeStats == null ? null : mergeStats.getTotal());
        table.addCell(mergeStats == null ? null : mergeStats.getTotalNumDocs());
        table.addCell(mergeStats == null ? null : mergeStats.getTotalSize());
        table.addCell(mergeStats == null ? null : mergeStats.getTotalTime());
        RefreshStats refreshStats = indicesStats == null ? null : indicesStats.getRefresh();
        table.addCell(refreshStats == null ? null : refreshStats.getTotal());
        table.addCell(refreshStats == null ? null : refreshStats.getTotalTime());
        table.addCell(refreshStats == null ? null : refreshStats.getExternalTotal());
        table.addCell(refreshStats == null ? null : refreshStats.getExternalTotalTime());
        table.addCell(refreshStats == null ? null : refreshStats.getListeners());
        ScriptStats scriptStats = stats == null ? null : stats.getScriptStats();
        table.addCell(scriptStats == null ? null : scriptStats.getCompilations());
        table.addCell(scriptStats == null ? null : scriptStats.getCacheEvictions());
        table.addCell(scriptStats == null ? null : scriptStats.getCompilationLimitTriggered());
        SearchStats searchStats = indicesStats == null ? null : indicesStats.getSearch();
        table.addCell(searchStats == null ? null : searchStats.getTotal().getFetchCurrent());
        table.addCell(searchStats == null ? null : searchStats.getTotal().getFetchTime());
        table.addCell(searchStats == null ? null : searchStats.getTotal().getFetchCount());
        table.addCell(searchStats == null ? null : searchStats.getOpenContexts());
        table.addCell(searchStats == null ? null : searchStats.getTotal().getQueryCurrent());
        table.addCell(searchStats == null ? null : searchStats.getTotal().getQueryTime());
        table.addCell(searchStats == null ? null : searchStats.getTotal().getQueryCount());
        table.addCell(searchStats == null ? null : searchStats.getTotal().getScrollCurrent());
        table.addCell(searchStats == null ? null : searchStats.getTotal().getScrollTime());
        table.addCell(searchStats == null ? null : searchStats.getTotal().getScrollCount());
        SegmentsStats segmentsStats = indicesStats == null ? null : indicesStats.getSegments();
        table.addCell(segmentsStats == null ? null : segmentsStats.getCount());
        table.addCell(segmentsStats == null ? null : segmentsStats.getZeroMemory());
        table.addCell(segmentsStats == null ? null : segmentsStats.getIndexWriterMemory());
        table.addCell(segmentsStats == null ? null : segmentsStats.getVersionMapMemory());
        table.addCell(segmentsStats == null ? null : segmentsStats.getBitsetMemory());
        table.addCell(searchStats == null ? null : searchStats.getTotal().getSuggestCurrent());
        table.addCell(searchStats == null ? null : searchStats.getTotal().getSuggestTime());
        table.addCell(searchStats == null ? null : searchStats.getTotal().getSuggestCount());
        table.endRow();
    }
    return table;
}

Example 4 with JvmStats

use of org.opensearch.monitor.jvm.JvmStats in project OpenSearch by opensearch-project.

the class NodeStatsTests method testSerialization.

public void testSerialization() throws IOException {
    NodeStats nodeStats = createNodeStats();
    try (BytesStreamOutput out = new BytesStreamOutput()) {
        nodeStats.writeTo(out);
        try (StreamInput in = out.bytes().streamInput()) {
            NodeStats deserializedNodeStats = new NodeStats(in);
            assertEquals(nodeStats.getNode(), deserializedNodeStats.getNode());
            assertEquals(nodeStats.getTimestamp(), deserializedNodeStats.getTimestamp());
            if (nodeStats.getOs() == null) {
                assertNull(deserializedNodeStats.getOs());
            } else {
                assertEquals(nodeStats.getOs().getTimestamp(), deserializedNodeStats.getOs().getTimestamp());
                assertEquals(nodeStats.getOs().getSwap().getFree(), deserializedNodeStats.getOs().getSwap().getFree());
                assertEquals(nodeStats.getOs().getSwap().getTotal(), deserializedNodeStats.getOs().getSwap().getTotal());
                assertEquals(nodeStats.getOs().getSwap().getUsed(), deserializedNodeStats.getOs().getSwap().getUsed());
                assertEquals(nodeStats.getOs().getMem().getFree(), deserializedNodeStats.getOs().getMem().getFree());
                assertEquals(nodeStats.getOs().getMem().getTotal(), deserializedNodeStats.getOs().getMem().getTotal());
                assertEquals(nodeStats.getOs().getMem().getUsed(), deserializedNodeStats.getOs().getMem().getUsed());
                assertEquals(nodeStats.getOs().getMem().getFreePercent(), deserializedNodeStats.getOs().getMem().getFreePercent());
                assertEquals(nodeStats.getOs().getMem().getUsedPercent(), deserializedNodeStats.getOs().getMem().getUsedPercent());
                assertEquals(nodeStats.getOs().getCpu().getPercent(), deserializedNodeStats.getOs().getCpu().getPercent());
                assertEquals(nodeStats.getOs().getCgroup().getCpuAcctControlGroup(), deserializedNodeStats.getOs().getCgroup().getCpuAcctControlGroup());
                assertEquals(nodeStats.getOs().getCgroup().getCpuAcctUsageNanos(), deserializedNodeStats.getOs().getCgroup().getCpuAcctUsageNanos());
                assertEquals(nodeStats.getOs().getCgroup().getCpuControlGroup(), deserializedNodeStats.getOs().getCgroup().getCpuControlGroup());
                assertEquals(nodeStats.getOs().getCgroup().getCpuCfsPeriodMicros(), deserializedNodeStats.getOs().getCgroup().getCpuCfsPeriodMicros());
                assertEquals(nodeStats.getOs().getCgroup().getCpuCfsQuotaMicros(), deserializedNodeStats.getOs().getCgroup().getCpuCfsQuotaMicros());
                assertEquals(nodeStats.getOs().getCgroup().getCpuStat().getNumberOfElapsedPeriods(), deserializedNodeStats.getOs().getCgroup().getCpuStat().getNumberOfElapsedPeriods());
                assertEquals(nodeStats.getOs().getCgroup().getCpuStat().getNumberOfTimesThrottled(), deserializedNodeStats.getOs().getCgroup().getCpuStat().getNumberOfTimesThrottled());
                assertEquals(nodeStats.getOs().getCgroup().getCpuStat().getTimeThrottledNanos(), deserializedNodeStats.getOs().getCgroup().getCpuStat().getTimeThrottledNanos());
                assertEquals(nodeStats.getOs().getCgroup().getMemoryLimitInBytes(), deserializedNodeStats.getOs().getCgroup().getMemoryLimitInBytes());
                assertEquals(nodeStats.getOs().getCgroup().getMemoryUsageInBytes(), deserializedNodeStats.getOs().getCgroup().getMemoryUsageInBytes());
                assertArrayEquals(nodeStats.getOs().getCpu().getLoadAverage(), deserializedNodeStats.getOs().getCpu().getLoadAverage(), 0);
            }
            if (nodeStats.getProcess() == null) {
                assertNull(deserializedNodeStats.getProcess());
            } else {
                assertEquals(nodeStats.getProcess().getTimestamp(), deserializedNodeStats.getProcess().getTimestamp());
                assertEquals(nodeStats.getProcess().getCpu().getTotal(), deserializedNodeStats.getProcess().getCpu().getTotal());
                assertEquals(nodeStats.getProcess().getCpu().getPercent(), deserializedNodeStats.getProcess().getCpu().getPercent());
                assertEquals(nodeStats.getProcess().getMem().getTotalVirtual(), deserializedNodeStats.getProcess().getMem().getTotalVirtual());
                assertEquals(nodeStats.getProcess().getMaxFileDescriptors(), deserializedNodeStats.getProcess().getMaxFileDescriptors());
                assertEquals(nodeStats.getProcess().getOpenFileDescriptors(), deserializedNodeStats.getProcess().getOpenFileDescriptors());
            }
            JvmStats jvm = nodeStats.getJvm();
            JvmStats deserializedJvm = deserializedNodeStats.getJvm();
            if (jvm == null) {
                assertNull(deserializedJvm);
            } else {
                JvmStats.Mem mem = jvm.getMem();
                JvmStats.Mem deserializedMem = deserializedJvm.getMem();
                assertEquals(jvm.getTimestamp(), deserializedJvm.getTimestamp());
                assertEquals(mem.getHeapUsedPercent(), deserializedMem.getHeapUsedPercent());
                assertEquals(mem.getHeapUsed(), deserializedMem.getHeapUsed());
                assertEquals(mem.getHeapCommitted(), deserializedMem.getHeapCommitted());
                assertEquals(mem.getNonHeapCommitted(), deserializedMem.getNonHeapCommitted());
                assertEquals(mem.getNonHeapUsed(), deserializedMem.getNonHeapUsed());
                assertEquals(mem.getHeapMax(), deserializedMem.getHeapMax());
                final Map<String, JvmStats.MemoryPool> pools = StreamSupport.stream(mem.spliterator(), false).collect(Collectors.toMap(JvmStats.MemoryPool::getName, Function.identity()));
                final Map<String, JvmStats.MemoryPool> deserializedPools = StreamSupport.stream(deserializedMem.spliterator(), false).collect(Collectors.toMap(JvmStats.MemoryPool::getName, Function.identity()));
                final int poolsCount = (int) StreamSupport.stream(nodeStats.getJvm().getMem().spliterator(), false).count();
                assertThat(pools.keySet(), hasSize(poolsCount));
                assertThat(deserializedPools.keySet(), hasSize(poolsCount));
                for (final Map.Entry<String, JvmStats.MemoryPool> entry : pools.entrySet()) {
                    assertThat(deserializedPools.containsKey(entry.getKey()), is(true));
                    assertEquals(entry.getValue().getName(), deserializedPools.get(entry.getKey()).getName());
                    assertEquals(entry.getValue().getMax(), deserializedPools.get(entry.getKey()).getMax());
                    assertEquals(entry.getValue().getPeakMax(), deserializedPools.get(entry.getKey()).getPeakMax());
                    assertEquals(entry.getValue().getPeakUsed(), deserializedPools.get(entry.getKey()).getPeakUsed());
                    assertEquals(entry.getValue().getUsed(), deserializedPools.get(entry.getKey()).getUsed());
                    assertEquals(entry.getValue().getLastGcStats().getUsed(), deserializedPools.get(entry.getKey()).getLastGcStats().getUsed());
                    assertEquals(entry.getValue().getLastGcStats().getMax(), deserializedPools.get(entry.getKey()).getLastGcStats().getMax());
                    assertEquals(entry.getValue().getLastGcStats().getUsagePercent(), deserializedPools.get(entry.getKey()).getLastGcStats().getUsagePercent());
                }
                JvmStats.Classes classes = jvm.getClasses();
                assertEquals(classes.getLoadedClassCount(), deserializedJvm.getClasses().getLoadedClassCount());
                assertEquals(classes.getTotalLoadedClassCount(), deserializedJvm.getClasses().getTotalLoadedClassCount());
                assertEquals(classes.getUnloadedClassCount(), deserializedJvm.getClasses().getUnloadedClassCount());
                assertEquals(jvm.getGc().getCollectors().length, deserializedJvm.getGc().getCollectors().length);
                for (int i = 0; i < jvm.getGc().getCollectors().length; i++) {
                    JvmStats.GarbageCollector garbageCollector = jvm.getGc().getCollectors()[i];
                    JvmStats.GarbageCollector deserializedGarbageCollector = deserializedJvm.getGc().getCollectors()[i];
                    assertEquals(garbageCollector.getName(), deserializedGarbageCollector.getName());
                    assertEquals(garbageCollector.getCollectionCount(), deserializedGarbageCollector.getCollectionCount());
                    assertEquals(garbageCollector.getCollectionTime(), deserializedGarbageCollector.getCollectionTime());
                }
                assertEquals(jvm.getThreads().getCount(), deserializedJvm.getThreads().getCount());
                assertEquals(jvm.getThreads().getPeakCount(), deserializedJvm.getThreads().getPeakCount());
                assertEquals(jvm.getUptime(), deserializedJvm.getUptime());
                if (jvm.getBufferPools() == null) {
                    assertNull(deserializedJvm.getBufferPools());
                } else {
                    assertEquals(jvm.getBufferPools().size(), deserializedJvm.getBufferPools().size());
                    for (int i = 0; i < jvm.getBufferPools().size(); i++) {
                        JvmStats.BufferPool bufferPool = jvm.getBufferPools().get(i);
                        JvmStats.BufferPool deserializedBufferPool = deserializedJvm.getBufferPools().get(i);
                        assertEquals(bufferPool.getName(), deserializedBufferPool.getName());
                        assertEquals(bufferPool.getCount(), deserializedBufferPool.getCount());
                        assertEquals(bufferPool.getTotalCapacity(), deserializedBufferPool.getTotalCapacity());
                        assertEquals(bufferPool.getUsed(), deserializedBufferPool.getUsed());
                    }
                }
            }
            if (nodeStats.getThreadPool() == null) {
                assertNull(deserializedNodeStats.getThreadPool());
            } else {
                Iterator<ThreadPoolStats.Stats> threadPoolIterator = nodeStats.getThreadPool().iterator();
                Iterator<ThreadPoolStats.Stats> deserializedThreadPoolIterator = deserializedNodeStats.getThreadPool().iterator();
                while (threadPoolIterator.hasNext()) {
                    ThreadPoolStats.Stats stats = threadPoolIterator.next();
                    ThreadPoolStats.Stats deserializedStats = deserializedThreadPoolIterator.next();
                    assertEquals(stats.getName(), deserializedStats.getName());
                    assertEquals(stats.getThreads(), deserializedStats.getThreads());
                    assertEquals(stats.getActive(), deserializedStats.getActive());
                    assertEquals(stats.getLargest(), deserializedStats.getLargest());
                    assertEquals(stats.getCompleted(), deserializedStats.getCompleted());
                    assertEquals(stats.getQueue(), deserializedStats.getQueue());
                    assertEquals(stats.getRejected(), deserializedStats.getRejected());
                }
            }
            FsInfo fs = nodeStats.getFs();
            FsInfo deserializedFs = deserializedNodeStats.getFs();
            if (fs == null) {
                assertNull(deserializedFs);
            } else {
                assertEquals(fs.getTimestamp(), deserializedFs.getTimestamp());
                assertEquals(fs.getTotal().getAvailable(), deserializedFs.getTotal().getAvailable());
                assertEquals(fs.getTotal().getTotal(), deserializedFs.getTotal().getTotal());
                assertEquals(fs.getTotal().getFree(), deserializedFs.getTotal().getFree());
                assertEquals(fs.getTotal().getMount(), deserializedFs.getTotal().getMount());
                assertEquals(fs.getTotal().getPath(), deserializedFs.getTotal().getPath());
                assertEquals(fs.getTotal().getType(), deserializedFs.getTotal().getType());
                FsInfo.IoStats ioStats = fs.getIoStats();
                FsInfo.IoStats deserializedIoStats = deserializedFs.getIoStats();
                assertEquals(ioStats.getTotalOperations(), deserializedIoStats.getTotalOperations());
                assertEquals(ioStats.getTotalReadKilobytes(), deserializedIoStats.getTotalReadKilobytes());
                assertEquals(ioStats.getTotalReadOperations(), deserializedIoStats.getTotalReadOperations());
                assertEquals(ioStats.getTotalWriteKilobytes(), deserializedIoStats.getTotalWriteKilobytes());
                assertEquals(ioStats.getTotalWriteOperations(), deserializedIoStats.getTotalWriteOperations());
                assertEquals(ioStats.getDevicesStats().length, deserializedIoStats.getDevicesStats().length);
                for (int i = 0; i < ioStats.getDevicesStats().length; i++) {
                    FsInfo.DeviceStats deviceStats = ioStats.getDevicesStats()[i];
                    FsInfo.DeviceStats deserializedDeviceStats = deserializedIoStats.getDevicesStats()[i];
                    assertEquals(deviceStats.operations(), deserializedDeviceStats.operations());
                    assertEquals(deviceStats.readKilobytes(), deserializedDeviceStats.readKilobytes());
                    assertEquals(deviceStats.readOperations(), deserializedDeviceStats.readOperations());
                    assertEquals(deviceStats.writeKilobytes(), deserializedDeviceStats.writeKilobytes());
                    assertEquals(deviceStats.writeOperations(), deserializedDeviceStats.writeOperations());
                }
            }
            if (nodeStats.getTransport() == null) {
                assertNull(deserializedNodeStats.getTransport());
            } else {
                assertEquals(nodeStats.getTransport().getRxCount(), deserializedNodeStats.getTransport().getRxCount());
                assertEquals(nodeStats.getTransport().getRxSize(), deserializedNodeStats.getTransport().getRxSize());
                assertEquals(nodeStats.getTransport().getServerOpen(), deserializedNodeStats.getTransport().getServerOpen());
                assertEquals(nodeStats.getTransport().getTxCount(), deserializedNodeStats.getTransport().getTxCount());
                assertEquals(nodeStats.getTransport().getTxSize(), deserializedNodeStats.getTransport().getTxSize());
            }
            if (nodeStats.getHttp() == null) {
                assertNull(deserializedNodeStats.getHttp());
            } else {
                assertEquals(nodeStats.getHttp().getServerOpen(), deserializedNodeStats.getHttp().getServerOpen());
                assertEquals(nodeStats.getHttp().getTotalOpen(), deserializedNodeStats.getHttp().getTotalOpen());
            }
            if (nodeStats.getBreaker() == null) {
                assertNull(deserializedNodeStats.getBreaker());
            } else {
                assertEquals(nodeStats.getBreaker().getAllStats().length, deserializedNodeStats.getBreaker().getAllStats().length);
                for (int i = 0; i < nodeStats.getBreaker().getAllStats().length; i++) {
                    CircuitBreakerStats circuitBreakerStats = nodeStats.getBreaker().getAllStats()[i];
                    CircuitBreakerStats deserializedCircuitBreakerStats = deserializedNodeStats.getBreaker().getAllStats()[i];
                    assertEquals(circuitBreakerStats.getEstimated(), deserializedCircuitBreakerStats.getEstimated());
                    assertEquals(circuitBreakerStats.getLimit(), deserializedCircuitBreakerStats.getLimit());
                    assertEquals(circuitBreakerStats.getName(), deserializedCircuitBreakerStats.getName());
                    assertEquals(circuitBreakerStats.getOverhead(), deserializedCircuitBreakerStats.getOverhead(), 0);
                    assertEquals(circuitBreakerStats.getTrippedCount(), deserializedCircuitBreakerStats.getTrippedCount(), 0);
                }
            }
            ScriptStats scriptStats = nodeStats.getScriptStats();
            if (scriptStats == null) {
                assertNull(deserializedNodeStats.getScriptStats());
            } else {
                assertEquals(scriptStats.getCacheEvictions(), deserializedNodeStats.getScriptStats().getCacheEvictions());
                assertEquals(scriptStats.getCompilations(), deserializedNodeStats.getScriptStats().getCompilations());
            }
            DiscoveryStats discoveryStats = nodeStats.getDiscoveryStats();
            DiscoveryStats deserializedDiscoveryStats = deserializedNodeStats.getDiscoveryStats();
            if (discoveryStats == null) {
                assertNull(deserializedDiscoveryStats);
            } else {
                PendingClusterStateStats queueStats = discoveryStats.getQueueStats();
                if (queueStats == null) {
                    assertNull(deserializedDiscoveryStats.getQueueStats());
                } else {
                    assertEquals(queueStats.getCommitted(), deserializedDiscoveryStats.getQueueStats().getCommitted());
                    assertEquals(queueStats.getTotal(), deserializedDiscoveryStats.getQueueStats().getTotal());
                    assertEquals(queueStats.getPending(), deserializedDiscoveryStats.getQueueStats().getPending());
                }
            }
            IngestStats ingestStats = nodeStats.getIngestStats();
            IngestStats deserializedIngestStats = deserializedNodeStats.getIngestStats();
            if (ingestStats == null) {
                assertNull(deserializedIngestStats);
            } else {
                IngestStats.Stats totalStats = ingestStats.getTotalStats();
                assertEquals(totalStats.getIngestCount(), deserializedIngestStats.getTotalStats().getIngestCount());
                assertEquals(totalStats.getIngestCurrent(), deserializedIngestStats.getTotalStats().getIngestCurrent());
                assertEquals(totalStats.getIngestFailedCount(), deserializedIngestStats.getTotalStats().getIngestFailedCount());
                assertEquals(totalStats.getIngestTimeInMillis(), deserializedIngestStats.getTotalStats().getIngestTimeInMillis());
                assertEquals(ingestStats.getPipelineStats().size(), deserializedIngestStats.getPipelineStats().size());
                for (IngestStats.PipelineStat pipelineStat : ingestStats.getPipelineStats()) {
                    String pipelineId = pipelineStat.getPipelineId();
                    IngestStats.Stats deserializedPipelineStats = getPipelineStats(deserializedIngestStats.getPipelineStats(), pipelineId);
                    assertEquals(pipelineStat.getStats().getIngestFailedCount(), deserializedPipelineStats.getIngestFailedCount());
                    assertEquals(pipelineStat.getStats().getIngestTimeInMillis(), deserializedPipelineStats.getIngestTimeInMillis());
                    assertEquals(pipelineStat.getStats().getIngestCurrent(), deserializedPipelineStats.getIngestCurrent());
                    assertEquals(pipelineStat.getStats().getIngestCount(), deserializedPipelineStats.getIngestCount());
                    List<IngestStats.ProcessorStat> processorStats = ingestStats.getProcessorStats().get(pipelineId);
                    // intentionally validating identical order
                    Iterator<IngestStats.ProcessorStat> it = deserializedIngestStats.getProcessorStats().get(pipelineId).iterator();
                    for (IngestStats.ProcessorStat processorStat : processorStats) {
                        IngestStats.ProcessorStat deserializedProcessorStat = it.next();
                        assertEquals(processorStat.getStats().getIngestFailedCount(), deserializedProcessorStat.getStats().getIngestFailedCount());
                        assertEquals(processorStat.getStats().getIngestTimeInMillis(), deserializedProcessorStat.getStats().getIngestTimeInMillis());
                        assertEquals(processorStat.getStats().getIngestCurrent(), deserializedProcessorStat.getStats().getIngestCurrent());
                        assertEquals(processorStat.getStats().getIngestCount(), deserializedProcessorStat.getStats().getIngestCount());
                    }
                    assertFalse(it.hasNext());
                }
            }
            AdaptiveSelectionStats adaptiveStats = nodeStats.getAdaptiveSelectionStats();
            AdaptiveSelectionStats deserializedAdaptiveStats = deserializedNodeStats.getAdaptiveSelectionStats();
            if (adaptiveStats == null) {
                assertNull(deserializedAdaptiveStats);
            } else {
                assertEquals(adaptiveStats.getOutgoingConnections(), deserializedAdaptiveStats.getOutgoingConnections());
                assertEquals(adaptiveStats.getRanks(), deserializedAdaptiveStats.getRanks());
                adaptiveStats.getComputedStats().forEach((k, v) -> {
                    ResponseCollectorService.ComputedNodeStats aStats = adaptiveStats.getComputedStats().get(k);
                    ResponseCollectorService.ComputedNodeStats bStats = deserializedAdaptiveStats.getComputedStats().get(k);
                    assertEquals(aStats.nodeId, bStats.nodeId);
                    assertEquals(aStats.queueSize, bStats.queueSize, 0.01);
                    assertEquals(aStats.serviceTime, bStats.serviceTime, 0.01);
                    assertEquals(aStats.responseTime, bStats.responseTime, 0.01);
                });
            }
            ScriptCacheStats scriptCacheStats = nodeStats.getScriptCacheStats();
            ScriptCacheStats deserializedScriptCacheStats = deserializedNodeStats.getScriptCacheStats();
            if (scriptCacheStats == null) {
                assertNull(deserializedScriptCacheStats);
            } else if (deserializedScriptCacheStats.getContextStats() != null) {
                Map<String, ScriptStats> deserialized = deserializedScriptCacheStats.getContextStats();
                long evictions = 0;
                long limited = 0;
                long compilations = 0;
                Map<String, ScriptStats> stats = scriptCacheStats.getContextStats();
                for (String context : stats.keySet()) {
                    ScriptStats deserStats = deserialized.get(context);
                    ScriptStats generatedStats = stats.get(context);
                    evictions += generatedStats.getCacheEvictions();
                    assertEquals(generatedStats.getCacheEvictions(), deserStats.getCacheEvictions());
                    limited += generatedStats.getCompilationLimitTriggered();
                    assertEquals(generatedStats.getCompilationLimitTriggered(), deserStats.getCompilationLimitTriggered());
                    compilations += generatedStats.getCompilations();
                    assertEquals(generatedStats.getCompilations(), deserStats.getCompilations());
                }
                ScriptStats sum = deserializedScriptCacheStats.sum();
                assertEquals(evictions, sum.getCacheEvictions());
                assertEquals(limited, sum.getCompilationLimitTriggered());
                assertEquals(compilations, sum.getCompilations());
            }
        }
    }
}