Exemplo n.º 1
0
    @Override
    public void run() {
      try {
        for (HystrixCommandMetrics commandMetrics : HystrixCommandMetrics.getInstances()) {
          String jsonString = getCommandJson(commandMetrics);
          listener.handleJsonMetric(jsonString);
        }

        for (HystrixThreadPoolMetrics threadPoolMetrics : HystrixThreadPoolMetrics.getInstances()) {
          if (hasExecutedCommandsOnThread(threadPoolMetrics)) {
            String jsonString = getThreadPoolJson(threadPoolMetrics);
            listener.handleJsonMetric(jsonString);
          }
        }

        for (HystrixCollapserMetrics collapserMetrics : HystrixCollapserMetrics.getInstances()) {
          String jsonString = getCollapserJson(collapserMetrics);
          listener.handleJsonMetric(jsonString);
        }

      } catch (Exception e) {
        logger.warn("Failed to output metrics as JSON", e);
        // shutdown
        pause();
        return;
      }
    }
Exemplo n.º 2
0
    private String getCollapserJson(final HystrixCollapserMetrics collapserMetrics)
        throws IOException {
      HystrixCollapserKey key = collapserMetrics.getCollapserKey();
      StringWriter jsonString = new StringWriter();
      JsonGenerator json = jsonFactory.createJsonGenerator(jsonString);
      json.writeStartObject();

      json.writeStringField("type", "HystrixCollapser");
      json.writeStringField("name", key.name());
      json.writeNumberField("currentTime", System.currentTimeMillis());

      safelyWriteNumberField(
          json,
          "rollingCountRequestsBatched",
          new Func0<Long>() {
            @Override
            public Long call() {
              return collapserMetrics.getRollingCount(HystrixEventType.Collapser.ADDED_TO_BATCH);
            }
          });
      safelyWriteNumberField(
          json,
          "rollingCountBatches",
          new Func0<Long>() {
            @Override
            public Long call() {
              return collapserMetrics.getRollingCount(HystrixEventType.Collapser.BATCH_EXECUTED);
            }
          });
      safelyWriteNumberField(
          json,
          "rollingCountResponsesFromCache",
          new Func0<Long>() {
            @Override
            public Long call() {
              return collapserMetrics.getRollingCount(
                  HystrixEventType.Collapser.RESPONSE_FROM_CACHE);
            }
          });

      // batch size percentiles
      json.writeNumberField("batchSize_mean", collapserMetrics.getBatchSizeMean());
      json.writeObjectFieldStart("batchSize");
      json.writeNumberField("25", collapserMetrics.getBatchSizePercentile(25));
      json.writeNumberField("50", collapserMetrics.getBatchSizePercentile(50));
      json.writeNumberField("75", collapserMetrics.getBatchSizePercentile(75));
      json.writeNumberField("90", collapserMetrics.getBatchSizePercentile(90));
      json.writeNumberField("95", collapserMetrics.getBatchSizePercentile(95));
      json.writeNumberField("99", collapserMetrics.getBatchSizePercentile(99));
      json.writeNumberField("99.5", collapserMetrics.getBatchSizePercentile(99.5));
      json.writeNumberField("100", collapserMetrics.getBatchSizePercentile(100));
      json.writeEndObject();

      // shard size percentiles (commented-out for now)
      // json.writeNumberField("shardSize_mean", collapserMetrics.getShardSizeMean());
      // json.writeObjectFieldStart("shardSize");
      // json.writeNumberField("25", collapserMetrics.getShardSizePercentile(25));
      // json.writeNumberField("50", collapserMetrics.getShardSizePercentile(50));
      // json.writeNumberField("75", collapserMetrics.getShardSizePercentile(75));
      // json.writeNumberField("90", collapserMetrics.getShardSizePercentile(90));
      // json.writeNumberField("95", collapserMetrics.getShardSizePercentile(95));
      // json.writeNumberField("99", collapserMetrics.getShardSizePercentile(99));
      // json.writeNumberField("99.5", collapserMetrics.getShardSizePercentile(99.5));
      // json.writeNumberField("100", collapserMetrics.getShardSizePercentile(100));
      // json.writeEndObject();

      // json.writeNumberField("propertyValue_metricsRollingStatisticalWindowInMilliseconds",
      // collapserMetrics.getProperties().metricsRollingStatisticalWindowInMilliseconds().get());
      json.writeBooleanField(
          "propertyValue_requestCacheEnabled",
          collapserMetrics.getProperties().requestCacheEnabled().get());
      json.writeNumberField(
          "propertyValue_maxRequestsInBatch",
          collapserMetrics.getProperties().maxRequestsInBatch().get());
      json.writeNumberField(
          "propertyValue_timerDelayInMilliseconds",
          collapserMetrics.getProperties().timerDelayInMilliseconds().get());

      json.writeNumberField(
          "reportingHosts", 1); // this will get summed across all instances in a cluster

      json.writeEndObject();
      json.close();

      return jsonString.getBuffer().toString();
    }