/// <summary>
/// Produces JSON formatted metrics data from an instance of <see cref="HystrixCommandMetrics"/>.
/// </summary>
/// <param name="commandMetrics">The metrics of a command.</param>
/// <returns>JSON formatted metrics data.</returns>
private static string CreateCommandSampleData(HystrixCommandMetrics commandMetrics)
{
IHystrixCircuitBreaker circuitBreaker = HystrixCircuitBreakerFactory.GetInstance(commandMetrics.CommandKey);
HealthCounts healthCounts = commandMetrics.GetHealthCounts();
IHystrixCommandProperties commandProperties = commandMetrics.Properties;
JObject data = new JObject(
new JProperty("type", "HystrixCommand"),
new JProperty("name", commandMetrics.CommandKey.Name),
new JProperty("group", commandMetrics.CommandGroup.Name),
new JProperty("currentTime", GetCurrentTimeForJavascript()),
circuitBreaker == null ? new JProperty("isCircuitBreakerOpen", false) : new JProperty("isCircuitBreakerOpen", circuitBreaker.IsOpen()),
new JProperty("errorPercentage", healthCounts.ErrorPercentage), // health counts
new JProperty("errorCount", healthCounts.ErrorCount),
new JProperty("requestCount", healthCounts.TotalRequests),
new JProperty("rollingCountCollapsedRequests", commandMetrics.GetRollingCount(HystrixRollingNumberEvent.Collapsed)), // rolling counters
new JProperty("rollingCountExceptionsThrown", commandMetrics.GetRollingCount(HystrixRollingNumberEvent.ExceptionThrown)),
new JProperty("rollingCountFailure", commandMetrics.GetRollingCount(HystrixRollingNumberEvent.Failure)),
new JProperty("rollingCountFallbackFailure", commandMetrics.GetRollingCount(HystrixRollingNumberEvent.FallbackFailure)),
new JProperty("rollingCountFallbackRejection", commandMetrics.GetRollingCount(HystrixRollingNumberEvent.FallbackRejection)),
new JProperty("rollingCountFallbackSuccess", commandMetrics.GetRollingCount(HystrixRollingNumberEvent.FallbackSuccess)),
new JProperty("rollingCountResponsesFromCache", commandMetrics.GetRollingCount(HystrixRollingNumberEvent.ResponseFromCache)),
new JProperty("rollingCountSemaphoreRejected", commandMetrics.GetRollingCount(HystrixRollingNumberEvent.SemaphoreRejected)),
new JProperty("rollingCountShortCircuited", commandMetrics.GetRollingCount(HystrixRollingNumberEvent.ShortCircuited)),
new JProperty("rollingCountSuccess", commandMetrics.GetRollingCount(HystrixRollingNumberEvent.Success)),
new JProperty("rollingCountThreadPoolRejected", commandMetrics.GetRollingCount(HystrixRollingNumberEvent.ThreadPoolRejected)),
new JProperty("rollingCountTimeout", commandMetrics.GetRollingCount(HystrixRollingNumberEvent.Timeout)),
new JProperty("currentConcurrentExecutionCount", commandMetrics.CurrentConcurrentExecutionCount),
new JProperty("latencyExecute_mean", commandMetrics.GetExecutionTimeMean()), // latency percentiles
new JProperty(
"latencyExecute",
new JObject(
new JProperty("0", commandMetrics.GetExecutionTimePercentile(0)),
new JProperty("25", commandMetrics.GetExecutionTimePercentile(25)),
new JProperty("50", commandMetrics.GetExecutionTimePercentile(50)),
new JProperty("75", commandMetrics.GetExecutionTimePercentile(75)),
new JProperty("90", commandMetrics.GetExecutionTimePercentile(90)),
new JProperty("95", commandMetrics.GetExecutionTimePercentile(95)),
new JProperty("99", commandMetrics.GetExecutionTimePercentile(99)),
new JProperty("99.5", commandMetrics.GetExecutionTimePercentile(99.5)),
new JProperty("100", commandMetrics.GetExecutionTimePercentile(100)))),
new JProperty("latencyTotal_mean", commandMetrics.GetTotalTimeMean()),
new JProperty(
"latencyTotal",
new JObject(
new JProperty("0", commandMetrics.GetTotalTimePercentile(0)),
new JProperty("25", commandMetrics.GetTotalTimePercentile(25)),
new JProperty("50", commandMetrics.GetTotalTimePercentile(50)),
new JProperty("75", commandMetrics.GetTotalTimePercentile(75)),
new JProperty("90", commandMetrics.GetTotalTimePercentile(90)),
new JProperty("95", commandMetrics.GetTotalTimePercentile(95)),
new JProperty("99", commandMetrics.GetTotalTimePercentile(99)),
new JProperty("99.5", commandMetrics.GetTotalTimePercentile(99.5)),
new JProperty("100", commandMetrics.GetTotalTimePercentile(100)))),
new JProperty("propertyValue_circuitBreakerRequestVolumeThreshold", commandProperties.CircuitBreakerRequestVolumeThreshold.Get()), // property values for reporting what is actually seen by the command rather than what was set somewhere
new JProperty("propertyValue_circuitBreakerSleepWindowInMilliseconds", (long)commandProperties.CircuitBreakerSleepWindow.Get().TotalMilliseconds),
new JProperty("propertyValue_circuitBreakerErrorThresholdPercentage", commandProperties.CircuitBreakerErrorThresholdPercentage.Get()),
new JProperty("propertyValue_circuitBreakerForceOpen", commandProperties.CircuitBreakerForceOpen.Get()),
new JProperty("propertyValue_circuitBreakerForceClosed", commandProperties.CircuitBreakerForceClosed.Get()),
new JProperty("propertyValue_circuitBreakerEnabled", commandProperties.CircuitBreakerEnabled.Get()),
new JProperty("propertyValue_executionIsolationStrategy", commandProperties.ExecutionIsolationStrategy.Get()),
new JProperty("propertyValue_executionIsolationThreadTimeoutInMilliseconds", (long)commandProperties.ExecutionIsolationThreadTimeout.Get().TotalMilliseconds),
new JProperty("propertyValue_executionIsolationThreadInterruptOnTimeout", commandProperties.ExecutionIsolationThreadInterruptOnTimeout.Get()),
new JProperty("propertyValue_executionIsolationThreadPoolKeyOverride", commandProperties.ExecutionIsolationThreadPoolKeyOverride.Get()),
new JProperty("propertyValue_executionIsolationSemaphoreMaxConcurrentRequests", commandProperties.ExecutionIsolationSemaphoreMaxConcurrentRequests.Get()),
new JProperty("propertyValue_fallbackIsolationSemaphoreMaxConcurrentRequests", commandProperties.FallbackIsolationSemaphoreMaxConcurrentRequests.Get()),
new JProperty("propertyValue_metricsRollingStatisticalWindowInMilliseconds", commandProperties.MetricsRollingStatisticalWindowInMilliseconds.Get()),
new JProperty("propertyValue_requestCacheEnabled", commandProperties.RequestCacheEnabled.Get()),
new JProperty("propertyValue_requestLogEnabled", commandProperties.RequestLogEnabled.Get()),
new JProperty("reportingHosts", 1));
return(data.ToString(Formatting.None));
}
private static void WriteCommandMetrics(JsonTextWriter writer, HystrixCommandMetrics commandMetrics)
{
IHystrixCommandKey key = commandMetrics.CommandKey;
IHystrixCircuitBreaker circuitBreaker = HystrixCircuitBreakerFactory.GetInstance(key);
writer.WriteStartObject();
writer.WriteStringField("type", "HystrixCommand");
writer.WriteStringField("name", key.Name);
writer.WriteStringField("group", commandMetrics.CommandGroup.Name);
writer.WriteLongField("currentTime", Time.CurrentTimeMillisJava);
// circuit breaker
if (circuitBreaker == null)
{
// circuit breaker is disabled and thus never open
writer.WriteBooleanField("isCircuitBreakerOpen", false);
}
else
{
writer.WriteBooleanField("isCircuitBreakerOpen", circuitBreaker.IsOpen);
}
HealthCounts healthCounts = commandMetrics.Healthcounts;
writer.WriteIntegerField("errorPercentage", healthCounts.ErrorPercentage);
writer.WriteLongField("errorCount", healthCounts.ErrorCount);
writer.WriteLongField("requestCount", healthCounts.TotalRequests);
// rolling counters
writer.WriteLongField("rollingCountBadRequests", commandMetrics.GetRollingCount(HystrixEventType.BAD_REQUEST));
writer.WriteLongField("rollingCountCollapsedRequests", commandMetrics.GetRollingCount(HystrixEventType.COLLAPSED));
writer.WriteLongField("rollingCountEmit", commandMetrics.GetRollingCount(HystrixEventType.EMIT));
writer.WriteLongField("rollingCountExceptionsThrown", commandMetrics.GetRollingCount(HystrixEventType.EXCEPTION_THROWN));
writer.WriteLongField("rollingCountFailure", commandMetrics.GetRollingCount(HystrixEventType.FAILURE));
writer.WriteLongField("rollingCountFallbackEmit", commandMetrics.GetRollingCount(HystrixEventType.FALLBACK_EMIT));
writer.WriteLongField("rollingCountFallbackFailure", commandMetrics.GetRollingCount(HystrixEventType.FALLBACK_FAILURE));
writer.WriteLongField("rollingCountFallbackMissing", commandMetrics.GetRollingCount(HystrixEventType.FALLBACK_MISSING));
writer.WriteLongField("rollingCountFallbackRejection", commandMetrics.GetRollingCount(HystrixEventType.FALLBACK_REJECTION));
writer.WriteLongField("rollingCountFallbackSuccess", commandMetrics.GetRollingCount(HystrixEventType.FALLBACK_SUCCESS));
writer.WriteLongField("rollingCountResponsesFromCache", commandMetrics.GetRollingCount(HystrixEventType.RESPONSE_FROM_CACHE));
writer.WriteLongField("rollingCountSemaphoreRejected", commandMetrics.GetRollingCount(HystrixEventType.SEMAPHORE_REJECTED));
writer.WriteLongField("rollingCountShortCircuited", commandMetrics.GetRollingCount(HystrixEventType.SHORT_CIRCUITED));
writer.WriteLongField("rollingCountSuccess", commandMetrics.GetRollingCount(HystrixEventType.SUCCESS));
writer.WriteLongField("rollingCountThreadPoolRejected", commandMetrics.GetRollingCount(HystrixEventType.THREAD_POOL_REJECTED));
writer.WriteLongField("rollingCountTimeout", commandMetrics.GetRollingCount(HystrixEventType.TIMEOUT));
writer.WriteIntegerField("currentConcurrentExecutionCount", commandMetrics.CurrentConcurrentExecutionCount);
writer.WriteLongField("rollingMaxConcurrentExecutionCount", commandMetrics.RollingMaxConcurrentExecutions);
// latency percentiles
writer.WriteIntegerField("latencyExecute_mean", commandMetrics.ExecutionTimeMean);
writer.WriteObjectFieldStart("latencyExecute");
writer.WriteIntegerField("0", commandMetrics.GetExecutionTimePercentile(0));
writer.WriteIntegerField("25", commandMetrics.GetExecutionTimePercentile(25));
writer.WriteIntegerField("50", commandMetrics.GetExecutionTimePercentile(50));
writer.WriteIntegerField("75", commandMetrics.GetExecutionTimePercentile(75));
writer.WriteIntegerField("90", commandMetrics.GetExecutionTimePercentile(90));
writer.WriteIntegerField("95", commandMetrics.GetExecutionTimePercentile(95));
writer.WriteIntegerField("99", commandMetrics.GetExecutionTimePercentile(99));
writer.WriteIntegerField("99.5", commandMetrics.GetExecutionTimePercentile(99.5));
writer.WriteIntegerField("100", commandMetrics.GetExecutionTimePercentile(100));
writer.WriteEndObject();
writer.WriteIntegerField("latencyTotal_mean", commandMetrics.TotalTimeMean);
writer.WriteObjectFieldStart("latencyTotal");
writer.WriteIntegerField("0", commandMetrics.GetTotalTimePercentile(0));
writer.WriteIntegerField("25", commandMetrics.GetTotalTimePercentile(25));
writer.WriteIntegerField("50", commandMetrics.GetTotalTimePercentile(50));
writer.WriteIntegerField("75", commandMetrics.GetTotalTimePercentile(75));
writer.WriteIntegerField("90", commandMetrics.GetTotalTimePercentile(90));
writer.WriteIntegerField("95", commandMetrics.GetTotalTimePercentile(95));
writer.WriteIntegerField("99", commandMetrics.GetTotalTimePercentile(99));
writer.WriteIntegerField("99.5", commandMetrics.GetTotalTimePercentile(99.5));
writer.WriteIntegerField("100", commandMetrics.GetTotalTimePercentile(100));
writer.WriteEndObject();
// property values for reporting what is actually seen by the command rather than what was set somewhere
IHystrixCommandOptions commandProperties = commandMetrics.Properties;
writer.WriteIntegerField("propertyValue_circuitBreakerRequestVolumeThreshold", commandProperties.CircuitBreakerRequestVolumeThreshold);
writer.WriteIntegerField("propertyValue_circuitBreakerSleepWindowInMilliseconds", commandProperties.CircuitBreakerSleepWindowInMilliseconds);
writer.WriteIntegerField("propertyValue_circuitBreakerErrorThresholdPercentage", commandProperties.CircuitBreakerErrorThresholdPercentage);
writer.WriteBooleanField("propertyValue_circuitBreakerForceOpen", commandProperties.CircuitBreakerForceOpen);
writer.WriteBooleanField("propertyValue_circuitBreakerForceClosed", commandProperties.CircuitBreakerForceClosed);
writer.WriteBooleanField("propertyValue_circuitBreakerEnabled", commandProperties.CircuitBreakerEnabled);
writer.WriteStringField("propertyValue_executionIsolationStrategy", commandProperties.ExecutionIsolationStrategy.ToString());
writer.WriteIntegerField("propertyValue_executionIsolationThreadTimeoutInMilliseconds", commandProperties.ExecutionTimeoutInMilliseconds);
writer.WriteIntegerField("propertyValue_executionTimeoutInMilliseconds", commandProperties.ExecutionTimeoutInMilliseconds);
writer.WriteBooleanField("propertyValue_executionIsolationThreadInterruptOnTimeout", false);
writer.WriteStringField("propertyValue_executionIsolationThreadPoolKeyOverride", commandProperties.ExecutionIsolationThreadPoolKeyOverride);
writer.WriteIntegerField("propertyValue_executionIsolationSemaphoreMaxConcurrentRequests", commandProperties.ExecutionIsolationSemaphoreMaxConcurrentRequests);
writer.WriteIntegerField("propertyValue_fallbackIsolationSemaphoreMaxConcurrentRequests", commandProperties.FallbackIsolationSemaphoreMaxConcurrentRequests);
writer.WriteIntegerField("propertyValue_metricsRollingStatisticalWindowInMilliseconds", commandProperties.MetricsRollingStatisticalWindowInMilliseconds);
writer.WriteBooleanField("propertyValue_requestCacheEnabled", commandProperties.RequestCacheEnabled);
writer.WriteBooleanField("propertyValue_requestLogEnabled", commandProperties.RequestLogEnabled);
writer.WriteIntegerField("reportingHosts", 1); // this will get summed across all instances in a cluster
writer.WriteStringField("threadPool", commandMetrics.ThreadPoolKey.Name);
writer.WriteEndObject();
}
protected IMonitor <int> getExecutionLatencyPercentileMonitor(string name, double percentile)
{
return(ServoMetricFactory.GaugeMetric <int>(this,
MonitorConfig.builder(name).build(),
() => metrics.GetExecutionTimePercentile(percentile)));
}