public void WriteCommandJson(IHystrixCommand command, Stream outputStream)
{
var commandIdentifier = command.CommandIdentifier;
var circuitBreaker = command.CircuitBreaker;
var commandMetrics = command.CommandMetrics;
var configurationService = commandMetrics.ConfigurationService;
var healthCounts = commandMetrics.GetHealthCounts();
// NOTE: The false argument to the UTF8Encoding constructor is important, otherwise it would embed BOMs into the stream.
using (var sw = new StreamWriter(outputStream, new UTF8Encoding(false), 1024, true))
{
jsonSerializer.Serialize(sw, new
{
type = "HystrixCommand",
name = commandIdentifier.CommandKey,
group = commandIdentifier.GroupKey,
currentTime = dateTimeProvider.GetCurrentTimeInMilliseconds(),
isCircuitBreakerOpen = circuitBreaker != null && circuitBreaker.CircuitIsOpen,
errorPercentage = healthCounts.GetErrorPercentage(),
errorCount = healthCounts.GetErrorCount(),
requestCount = healthCounts.GetTotalRequests(),
// rolling counters
rollingCountBadRequests = commandMetrics.GetRollingSum(HystrixRollingNumberEvent.BadRequest),
rollingCountCollapsedRequests = commandMetrics.GetRollingSum(HystrixRollingNumberEvent.Collapsed),
rollingCountEmit = commandMetrics.GetRollingSum(HystrixRollingNumberEvent.Emit),
rollingCountExceptionsThrown = commandMetrics.GetRollingSum(HystrixRollingNumberEvent.ExceptionThrown),
rollingCountFailure = commandMetrics.GetRollingSum(HystrixRollingNumberEvent.Failure),
rollingCountFallbackEmit = commandMetrics.GetRollingSum(HystrixRollingNumberEvent.FallbackEmit),
rollingCountFallbackFailure = commandMetrics.GetRollingSum(HystrixRollingNumberEvent.FallbackFailure),
rollingCountFallbackMissing = commandMetrics.GetRollingSum(HystrixRollingNumberEvent.FallbackMissing),
rollingCountFallbackRejection = commandMetrics.GetRollingSum(HystrixRollingNumberEvent.FallbackRejection),
rollingCountFallbackSuccess = commandMetrics.GetRollingSum(HystrixRollingNumberEvent.FallbackSuccess),
rollingCountResponsesFromCache = commandMetrics.GetRollingSum(HystrixRollingNumberEvent.ResponseFromCache),
rollingCountSemaphoreRejected = commandMetrics.GetRollingSum(HystrixRollingNumberEvent.SemaphoreRejected),
rollingCountShortCircuited = commandMetrics.GetRollingSum(HystrixRollingNumberEvent.ShortCircuited),
rollingCountSuccess = commandMetrics.GetRollingSum(HystrixRollingNumberEvent.Success),
rollingCountThreadPoolRejected = commandMetrics.GetRollingSum(HystrixRollingNumberEvent.ThreadPoolRejected),
rollingCountTimeout = commandMetrics.GetRollingSum(HystrixRollingNumberEvent.Timeout),
currentConcurrentExecutionCount = commandMetrics.GetCurrentConcurrentExecutionCount(),
rollingMaxConcurrentExecutionCount = commandMetrics.GetRollingMaxConcurrentExecutions(),
// latency percentiles
latencyExecute_mean = commandMetrics.GetExecutionTimeMean(),
latencyExecute = new Dictionary <string, int>
{
{ "0", commandMetrics.GetExecutionTimePercentile(0) },
{ "25", commandMetrics.GetExecutionTimePercentile(25) },
{ "50", commandMetrics.GetExecutionTimePercentile(50) },
{ "75", commandMetrics.GetExecutionTimePercentile(75) },
{ "90", commandMetrics.GetExecutionTimePercentile(90) },
{ "95", commandMetrics.GetExecutionTimePercentile(95) },
{ "99", commandMetrics.GetExecutionTimePercentile(99) },
{ "99.5", commandMetrics.GetExecutionTimePercentile(99.5) },
{ "100", commandMetrics.GetExecutionTimePercentile(100) }
},
latencyTotal_mean = commandMetrics.GetTotalTimeMean(),
latencyTotal = new Dictionary <string, int>
{
{ "0", commandMetrics.GetTotalTimePercentile(0) },
{ "25", commandMetrics.GetTotalTimePercentile(25) },
{ "50", commandMetrics.GetTotalTimePercentile(50) },
{ "75", commandMetrics.GetTotalTimePercentile(75) },
{ "90", commandMetrics.GetTotalTimePercentile(90) },
{ "95", commandMetrics.GetTotalTimePercentile(95) },
{ "99", commandMetrics.GetTotalTimePercentile(99) },
{ "99.5", commandMetrics.GetTotalTimePercentile(99.5) },
{ "100", commandMetrics.GetTotalTimePercentile(100) }
},
// property values for reporting what is actually seen by the command rather than what was set somewhere
propertyValue_circuitBreakerRequestVolumeThreshold = configurationService.GetCircuitBreakerRequestVolumeThreshold(),
propertyValue_circuitBreakerSleepWindowInMilliseconds = configurationService.GetCircuitBreakerSleepWindowInMilliseconds(),
propertyValue_circuitBreakerErrorThresholdPercentage = configurationService.GetCircuitBreakerErrorThresholdPercentage(),
propertyValue_circuitBreakerForceOpen = configurationService.GetCircuitBreakerForcedOpen(),
propertyValue_circuitBreakerForceClosed = configurationService.GetCircuitBreakerForcedClosed(),
propertyValue_circuitBreakerEnabled = configurationService.GetHystrixCommandEnabled(),
propertyValue_executionIsolationStrategy = "THREAD", // configurationService.GetExecutionIsolationStrategy().Name,
propertyValue_executionIsolationThreadTimeoutInMilliseconds = 0, //configurationService.GetExecutionTimeoutInMilliseconds(),
propertyValue_executionTimeoutInMilliseconds = configurationService.GetCommandTimeoutInMilliseconds(),
propertyValue_executionIsolationThreadInterruptOnTimeout = false, //configurationService.GetExecutionIsolationThreadInterruptOnTimeout(),
propertyValue_executionIsolationThreadPoolKeyOverride = (string)null, // configurationService.GetExecutionIsolationThreadPoolKeyOverride(),
propertyValue_executionIsolationSemaphoreMaxConcurrentRequests = 0, // configurationService.GetExecutionIsolationSemaphoreMaxConcurrentRequests(),
propertyValue_fallbackIsolationSemaphoreMaxConcurrentRequests = 0, // configurationService.GetFallbackIsolationSemaphoreMaxConcurrentRequests(),
/*
* The following are commented out as these rarely change and are verbose for streaming for something people don't change.
* We could perhaps allow a property or request argument to include these.
*/
propertyValue_metricsRollingPercentileEnabled = configurationService.GetMetricsRollingPercentileEnabled(),
propertyValue_metricsRollingPercentileBucketSize = configurationService.GetMetricsRollingPercentileBucketSize(),
propertyValue_metricsRollingPercentileWindow = configurationService.GetMetricsRollingPercentileWindowInMilliseconds(),
propertyValue_metricsRollingPercentileWindowBuckets = configurationService.GetMetricsRollingPercentileWindowBuckets(),
propertyValue_metricsRollingStatisticalWindowBuckets = configurationService.GetMetricsRollingStatisticalWindowBuckets(),
propertyValue_metricsRollingStatisticalWindowInMilliseconds = configurationService.GetMetricsRollingStatisticalWindowInMilliseconds(),
propertyValue_requestCacheEnabled = false, // configurationService.requestCacheEnabled().get(),
propertyValue_requestLogEnabled = false, // configurationService.requestLogEnabled().get(),
reportingHosts = 1, // this will get summed across all instances in a cluster
});
}
}
