/** histograms are sampled, but we just update points */
public void mergeHistograms(
MetricInfo metricInfo,
String meta,
Map<Integer, MetricSnapshot> data,
Map<String, Integer> metaCounters,
Map<String, Map<Integer, Histogram>> histograms) {
Map<Integer, MetricSnapshot> existing = metricInfo.get_metrics().get(meta);
if (existing == null) {
metricInfo.put_to_metrics(meta, data);
Map<Integer, Histogram> histogramMap = new HashMap<>();
for (Map.Entry<Integer, MetricSnapshot> dataEntry : data.entrySet()) {
Histogram histogram = MetricUtils.metricSnapshot2Histogram(dataEntry.getValue());
histogramMap.put(dataEntry.getKey(), histogram);
}
histograms.put(meta, histogramMap);
} else {
for (Map.Entry<Integer, MetricSnapshot> dataEntry : data.entrySet()) {
Integer win = dataEntry.getKey();
MetricSnapshot snapshot = dataEntry.getValue();
MetricSnapshot old = existing.get(win);
if (old == null) {
existing.put(win, snapshot);
histograms.get(meta).put(win, MetricUtils.metricSnapshot2Histogram(snapshot));
} else {
if (snapshot.get_ts() >= old.get_ts()) {
old.set_ts(snapshot.get_ts());
// update points
MetricUtils.updateHistogramPoints(histograms.get(meta).get(win), snapshot.get_points());
}
}
}
}
updateMetricCounters(meta, metaCounters);
}
private void resetPoints(Map<String, Map<Integer, MetricSnapshot>> metrics) {
for (Map.Entry<String, Map<Integer, MetricSnapshot>> metricEntry : metrics.entrySet()) {
String meta = metricEntry.getKey();
MetricType metricType = MetricUtils.metricType(meta);
Map<Integer, MetricSnapshot> winData = metricEntry.getValue();
if (metricType == MetricType.HISTOGRAM || metricType == MetricType.TIMER) {
for (MetricSnapshot snapshot : winData.values()) {
snapshot.set_points(new ArrayList<Long>(0));
}
}
}
}
/** timers are sampled, we just update points */
public void mergeTimers(
MetricInfo metricInfo,
String meta,
Map<Integer, MetricSnapshot> data,
Map<String, Integer> metaCounters,
Map<String, Map<Integer, Timer>> timers) {
Map<Integer, MetricSnapshot> existing = metricInfo.get_metrics().get(meta);
if (existing == null) {
metricInfo.put_to_metrics(meta, data);
Map<Integer, Timer> timerMap = new HashMap<>();
for (Map.Entry<Integer, MetricSnapshot> dataEntry : data.entrySet()) {
Timer timer = MetricUtils.metricSnapshot2Timer(dataEntry.getValue());
timerMap.put(dataEntry.getKey(), timer);
}
timers.put(meta, timerMap);
} else {
for (Map.Entry<Integer, MetricSnapshot> dataEntry : data.entrySet()) {
Integer win = dataEntry.getKey();
MetricSnapshot snapshot = dataEntry.getValue();
MetricSnapshot old = existing.get(win);
if (old == null) {
existing.put(win, snapshot);
timers.get(meta).put(win, MetricUtils.metricSnapshot2Timer(snapshot));
} else {
if (snapshot.get_ts() >= old.get_ts()) {
old.set_ts(snapshot.get_ts());
old.set_m1(old.get_m1() + snapshot.get_m1());
old.set_m5(old.get_m5() + snapshot.get_m5());
old.set_m15(old.get_m15() + snapshot.get_m15());
// update points
MetricUtils.updateTimerPoints(timers.get(meta).get(win), snapshot.get_points());
}
}
}
}
updateMetricCounters(meta, metaCounters);
}
private void adjustMetrics(
Map<String, Map<Integer, MetricSnapshot>> metrics,
Map<String, Integer> metaCounters,
Map<String, Map<Integer, Histogram>> histograms,
Map<String, Map<Integer, Timer>> timers) {
for (Map.Entry<String, Map<Integer, MetricSnapshot>> metricEntry : metrics.entrySet()) {
String meta = metricEntry.getKey();
MetricType metricType = MetricUtils.metricType(meta);
MetaType metaType = MetricUtils.metaType(meta);
Map<Integer, MetricSnapshot> winData = metricEntry.getValue();
if (metricType == MetricType.HISTOGRAM) {
for (Map.Entry<Integer, MetricSnapshot> dataEntry : winData.entrySet()) {
MetricSnapshot snapshot = dataEntry.getValue();
Integer cnt = metaCounters.get(meta);
Histogram histogram = histograms.get(meta).get(dataEntry.getKey());
if (cnt != null && cnt > 1) {
Snapshot snapshot1 = histogram.getSnapshot();
snapshot.set_mean(snapshot1.getMean());
snapshot.set_p50(snapshot1.getMedian());
snapshot.set_p75(snapshot1.get75thPercentile());
snapshot.set_p95(snapshot1.get95thPercentile());
snapshot.set_p98(snapshot1.get98thPercentile());
snapshot.set_p99(snapshot1.get99thPercentile());
snapshot.set_p999(snapshot1.get999thPercentile());
snapshot.set_stddev(snapshot1.getStdDev());
snapshot.set_min(snapshot1.getMin());
snapshot.set_max(snapshot1.getMax());
if (metaType == MetaType.TOPOLOGY) {
snapshot.set_points(Arrays.asList(ArrayUtils.toObject(snapshot1.getValues())));
}
}
if (metaType != MetaType.TOPOLOGY) {
snapshot.set_points(new ArrayList<Long>(0));
}
}
} else if (metricType == MetricType.TIMER) {
for (Map.Entry<Integer, MetricSnapshot> dataEntry : winData.entrySet()) {
MetricSnapshot snapshot = dataEntry.getValue();
Integer cnt = metaCounters.get(meta);
if (cnt != null && cnt > 1) {
Timer timer = timers.get(meta).get(dataEntry.getKey());
Snapshot snapshot1 = timer.getSnapshot();
snapshot.set_p50(snapshot1.getMedian());
snapshot.set_p75(snapshot1.get75thPercentile());
snapshot.set_p95(snapshot1.get95thPercentile());
snapshot.set_p98(snapshot1.get98thPercentile());
snapshot.set_p99(snapshot1.get99thPercentile());
snapshot.set_p999(snapshot1.get999thPercentile());
snapshot.set_stddev(snapshot1.getStdDev());
snapshot.set_min(snapshot1.getMin());
snapshot.set_max(snapshot1.getMax());
}
snapshot.set_points(new ArrayList<Long>(0));
}
}
}
}
public TopologyMetric mergeMetrics() {
long start = System.currentTimeMillis();
if (getMemCache().size() == 0) {
// LOG.info("topology:{}, metric size is 0, skip...", topologyId);
return null;
}
if (isMerging()) {
LOG.info("topology {} is already merging, skip...", topologyId);
return null;
}
setMerging(true);
try {
Map<String, MetricInfo> workerMetricMap = this.memCache;
// reset mem cache
this.memCache = new ConcurrentHashMap<>();
MetricInfo topologyMetrics = MetricUtils.mkMetricInfo();
MetricInfo componentMetrics = MetricUtils.mkMetricInfo();
MetricInfo taskMetrics = MetricUtils.mkMetricInfo();
MetricInfo streamMetrics = MetricUtils.mkMetricInfo();
MetricInfo workerMetrics = MetricUtils.mkMetricInfo();
MetricInfo nettyMetrics = MetricUtils.mkMetricInfo();
TopologyMetric tpMetric =
new TopologyMetric(
topologyMetrics,
componentMetrics,
workerMetrics,
taskMetrics,
streamMetrics,
nettyMetrics);
// metric name => worker count
Map<String, Integer> metricNameCounters = new HashMap<>();
// special for histograms & timers, we merge the points to get a new snapshot data.
Map<String, Map<Integer, Histogram>> histograms = new HashMap<>();
Map<String, Map<Integer, Timer>> timers = new HashMap<>();
// iterate metrics of all workers within the same topology
for (ConcurrentMap.Entry<String, MetricInfo> metricEntry : workerMetricMap.entrySet()) {
MetricInfo metricInfo = metricEntry.getValue();
// merge counters: add old and new values, note we only add incoming new metrics and
// overwrite
// existing data, same for all below.
Map<String, Map<Integer, MetricSnapshot>> metrics = metricInfo.get_metrics();
for (Map.Entry<String, Map<Integer, MetricSnapshot>> metric : metrics.entrySet()) {
String metricName = metric.getKey();
Map<Integer, MetricSnapshot> data = metric.getValue();
MetaType metaType = MetricUtils.metaType(metricName);
MetricType metricType = MetricUtils.metricType(metricName);
if (metricType == MetricType.COUNTER) {
mergeCounters(tpMetric, metaType, metricName, data);
} else if (metricType == MetricType.GAUGE) {
mergeGauges(tpMetric, metaType, metricName, data);
} else if (metricType == MetricType.METER) {
mergeMeters(
getMetricInfoByType(tpMetric, metaType), metricName, data, metricNameCounters);
} else if (metricType == MetricType.HISTOGRAM) {
mergeHistograms(
getMetricInfoByType(tpMetric, metaType),
metricName,
data,
metricNameCounters,
histograms);
} else if (metricType == MetricType.TIMER) {
mergeTimers(
getMetricInfoByType(tpMetric, metaType),
metricName,
data,
metricNameCounters,
timers);
}
}
}
adjustHistogramTimerMetrics(tpMetric, metricNameCounters, histograms, timers);
// for counters, we only report delta data every time, need to sum with old data
// adjustCounterMetrics(tpMetric, oldTpMetric);
LOG.info(
"merge topology metrics:{}, cost:{}", topologyId, System.currentTimeMillis() - start);
// debug logs
// MetricUtils.printMetricWinSize(componentMetrics);
return tpMetric;
} finally {
setMerging(false);
}
}