Package com.netflix.hystrix.HystrixCommandMetrics

Examples of com.netflix.hystrix.HystrixCommandMetrics.HealthCounts

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            }

            private String getStatsStringFromMetrics(HystrixCommandMetrics metrics) {
                StringBuilder m = new StringBuilder();
                if (metrics != null) {
                    HealthCounts health = metrics.getHealthCounts();
                    m.append("Requests: ").append(health.getTotalRequests()).append(" ");
                    m.append("Errors: ").append(health.getErrorCount()).append(" (").append(health.getErrorPercentage()).append("%)   ");
                    m.append("Mean: ").append(metrics.getExecutionTimePercentile(50)).append(" ");
                    m.append("75th: ").append(metrics.getExecutionTimePercentile(75)).append(" ");
                    m.append("90th: ").append(metrics.getExecutionTimePercentile(90)).append(" ");
                    m.append("99th: ").append(metrics.getExecutionTimePercentile(99)).append(" ");
                }
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                // if we're open we immediately return true and don't bother attempting to 'close' ourself as that is left to allowSingleTest and a subsequent successful test to close
                return true;
            }

            // we're closed, so let's see if errors have made us so we should trip the circuit open
            HealthCounts health = metrics.getHealthCounts();

            // check if we are past the statisticalWindowVolumeThreshold
            if (health.getTotalRequests() < properties.circuitBreakerRequestVolumeThreshold().get()) {
                // we are not past the minimum volume threshold for the statisticalWindow so we'll return false immediately and not calculate anything
                return false;
            }

            if (health.getErrorPercentage() < properties.circuitBreakerErrorThresholdPercentage().get()) {
                return false;
            } else {
                // our failure rate is too high, trip the circuit
                if (circuitOpen.compareAndSet(false, true)) {
                    // if the previousValue was false then we want to set the currentTime
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                        // circuit breaker is disabled and thus never open
                        json.writeBooleanField("isCircuitBreakerOpen", false);
                    } else {
                        json.writeBooleanField("isCircuitBreakerOpen", circuitBreaker.isOpen());
                    }
                    HealthCounts healthCounts = commandMetrics.getHealthCounts();
                    json.writeNumberField("errorPercentage", healthCounts.getErrorPercentage());
                    json.writeNumberField("errorCount", healthCounts.getErrorCount());
                    json.writeNumberField("requestCount", healthCounts.getTotalRequests());

                    // rolling counters
                    json.writeNumberField("rollingCountCollapsedRequests", commandMetrics.getRollingCount(HystrixRollingNumberEvent.COLLAPSED));
                    json.writeNumberField("rollingCountExceptionsThrown", commandMetrics.getRollingCount(HystrixRollingNumberEvent.EXCEPTION_THROWN));
                    json.writeNumberField("rollingCountFailure", commandMetrics.getRollingCount(HystrixRollingNumberEvent.FAILURE));
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            // circuit breaker is disabled and thus never open
            json.writeBooleanField("isCircuitBreakerOpen", false);
        } else {
            json.writeBooleanField("isCircuitBreakerOpen", circuitBreaker.isOpen());
        }
        HealthCounts healthCounts = commandMetrics.getHealthCounts();
        json.writeNumberField("errorPercentage", healthCounts.getErrorPercentage());
        json.writeNumberField("errorCount", healthCounts.getErrorCount());
        json.writeNumberField("requestCount", healthCounts.getTotalRequests());

        // rolling counters
        json.writeNumberField("rollingCountCollapsedRequests", commandMetrics.getRollingCount(HystrixRollingNumberEvent.COLLAPSED));
        json.writeNumberField("rollingCountExceptionsThrown", commandMetrics.getRollingCount(HystrixRollingNumberEvent.EXCEPTION_THROWN));
        json.writeNumberField("rollingCountFailure", commandMetrics.getRollingCount(HystrixRollingNumberEvent.FAILURE));
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    MetricsMap metricsMap = new MetricsMap();
    HystrixCommandKey key = HystrixCommandKey.Factory.asKey("GetUserCommand");
    HystrixCommandMetrics metrics = HystrixCommandMetrics.getInstance(key);

    if (metrics != null) {
      HealthCounts counts = metrics.getHealthCounts();
      HystrixCircuitBreaker circuitBreaker = HystrixCircuitBreaker.Factory.getInstance(key);

      metricsMap.put("circuitOpen", circuitBreaker.isOpen());
      metricsMap.put("totalRequest", counts.getTotalRequests());
      metricsMap.put("errorPercentage", counts.getErrorPercentage());
      metricsMap.put("success", metrics.getRollingCount(HystrixRollingNumberEvent.SUCCESS));
      metricsMap.put("timeout", metrics.getRollingCount(HystrixRollingNumberEvent.TIMEOUT));
      metricsMap.put("failure", metrics.getRollingCount(HystrixRollingNumberEvent.FAILURE));
      metricsMap.put("shortCircuited", metrics.getRollingCount(HystrixRollingNumberEvent.SHORT_CIRCUITED));
      metricsMap.put("threadPoolRejected",
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                        // circuit breaker is disabled and thus never open
                        json.writeBooleanField("isCircuitBreakerOpen", false);
                    } else {
                        json.writeBooleanField("isCircuitBreakerOpen", circuitBreaker.isOpen());
                    }
                    HealthCounts healthCounts = commandMetrics.getHealthCounts();
                    json.writeNumberField("errorPercentage", healthCounts.getErrorPercentage());
                    json.writeNumberField("errorCount", healthCounts.getErrorCount());
                    json.writeNumberField("requestCount", healthCounts.getTotalRequests());

                    // rolling counters
                    json.writeNumberField("rollingCountCollapsedRequests", commandMetrics.getRollingCount(HystrixRollingNumberEvent.COLLAPSED));
                    json.writeNumberField("rollingCountExceptionsThrown", commandMetrics.getRollingCount(HystrixRollingNumberEvent.EXCEPTION_THROWN));
                    json.writeNumberField("rollingCountFailure", commandMetrics.getRollingCount(HystrixRollingNumberEvent.FAILURE));
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Related Classes of com.netflix.hystrix.HystrixCommandMetrics.HealthCounts

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  • com.netflix.hystrix.contrib.metrics.eventstream.HystrixMetricsPoller$MetricsPoller
  • com.netflix.hystrix.contrib.rxnetty.metricsstream.JsonMappers
  • com.netflix.hystrix.examples.demo.HystrixCommandDemo
  • com.netflix.hystrix.HystrixCircuitBreaker$HystrixCircuitBreakerImpl
  • org.springside.examples.showcase.demos.hystrix.service.UserService
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