@Override
public Long call() {
return metrics.getRollingMaxConcurrentExecutions();
}
private String getCommandJson(final HystrixCommandMetrics commandMetrics) throws IOException {
HystrixCommandKey key = commandMetrics.getCommandKey();
HystrixCircuitBreaker circuitBreaker = HystrixCircuitBreaker.Factory.getInstance(key);
StringWriter jsonString = new StringWriter();
JsonGenerator json = jsonFactory.createGenerator(jsonString);
json.writeStartObject();
json.writeStringField("type", "HystrixCommand");
json.writeStringField("name", key.name());
json.writeStringField("group", commandMetrics.getCommandGroup().name());
json.writeNumberField("currentTime", System.currentTimeMillis());
// circuit breaker
if (circuitBreaker == null) {
// 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
safelyWriteNumberField(
json,
"rollingCountBadRequests",
new Func0<Long>() {
@Override
public Long call() {
return commandMetrics.getRollingCount(HystrixEventType.BAD_REQUEST);
}
});
safelyWriteNumberField(
json,
"rollingCountCollapsedRequests",
new Func0<Long>() {
@Override
public Long call() {
return commandMetrics.getRollingCount(HystrixEventType.COLLAPSED);
}
});
safelyWriteNumberField(
json,
"rollingCountEmit",
new Func0<Long>() {
@Override
public Long call() {
return commandMetrics.getRollingCount(HystrixEventType.EMIT);
}
});
safelyWriteNumberField(
json,
"rollingCountExceptionsThrown",
new Func0<Long>() {
@Override
public Long call() {
return commandMetrics.getRollingCount(HystrixEventType.EXCEPTION_THROWN);
}
});
safelyWriteNumberField(
json,
"rollingCountFailure",
new Func0<Long>() {
@Override
public Long call() {
return commandMetrics.getRollingCount(HystrixEventType.FAILURE);
}
});
safelyWriteNumberField(
json,
"rollingCountFallbackEmit",
new Func0<Long>() {
@Override
public Long call() {
return commandMetrics.getRollingCount(HystrixEventType.FALLBACK_EMIT);
}
});
safelyWriteNumberField(
json,
"rollingCountFallbackFailure",
new Func0<Long>() {
@Override
public Long call() {
return commandMetrics.getRollingCount(HystrixEventType.FALLBACK_FAILURE);
}
});
safelyWriteNumberField(
json,
"rollingCountFallbackMissing",
new Func0<Long>() {
@Override
public Long call() {
return commandMetrics.getRollingCount(HystrixEventType.FALLBACK_MISSING);
}
});
safelyWriteNumberField(
json,
"rollingCountFallbackRejection",
new Func0<Long>() {
@Override
public Long call() {
return commandMetrics.getRollingCount(HystrixEventType.FALLBACK_REJECTION);
}
});
safelyWriteNumberField(
json,
"rollingCountFallbackSuccess",
new Func0<Long>() {
@Override
public Long call() {
return commandMetrics.getRollingCount(HystrixEventType.FALLBACK_SUCCESS);
}
});
safelyWriteNumberField(
json,
"rollingCountResponsesFromCache",
new Func0<Long>() {
@Override
public Long call() {
return commandMetrics.getRollingCount(HystrixEventType.RESPONSE_FROM_CACHE);
}
});
safelyWriteNumberField(
json,
"rollingCountSemaphoreRejected",
new Func0<Long>() {
@Override
public Long call() {
return commandMetrics.getRollingCount(HystrixEventType.SEMAPHORE_REJECTED);
}
});
safelyWriteNumberField(
json,
"rollingCountShortCircuited",
new Func0<Long>() {
@Override
public Long call() {
return commandMetrics.getRollingCount(HystrixEventType.SHORT_CIRCUITED);
}
});
safelyWriteNumberField(
json,
"rollingCountSuccess",
new Func0<Long>() {
@Override
public Long call() {
return commandMetrics.getRollingCount(HystrixEventType.SUCCESS);
}
});
safelyWriteNumberField(
json,
"rollingCountThreadPoolRejected",
new Func0<Long>() {
@Override
public Long call() {
return commandMetrics.getRollingCount(HystrixEventType.THREAD_POOL_REJECTED);
}
});
safelyWriteNumberField(
json,
"rollingCountTimeout",
new Func0<Long>() {
@Override
public Long call() {
return commandMetrics.getRollingCount(HystrixEventType.TIMEOUT);
}
});
json.writeNumberField(
"currentConcurrentExecutionCount", commandMetrics.getCurrentConcurrentExecutionCount());
json.writeNumberField(
"rollingMaxConcurrentExecutionCount", commandMetrics.getRollingMaxConcurrentExecutions());
// latency percentiles
json.writeNumberField("latencyExecute_mean", commandMetrics.getExecutionTimeMean());
json.writeObjectFieldStart("latencyExecute");
json.writeNumberField("0", commandMetrics.getExecutionTimePercentile(0));
json.writeNumberField("25", commandMetrics.getExecutionTimePercentile(25));
json.writeNumberField("50", commandMetrics.getExecutionTimePercentile(50));
json.writeNumberField("75", commandMetrics.getExecutionTimePercentile(75));
json.writeNumberField("90", commandMetrics.getExecutionTimePercentile(90));
json.writeNumberField("95", commandMetrics.getExecutionTimePercentile(95));
json.writeNumberField("99", commandMetrics.getExecutionTimePercentile(99));
json.writeNumberField("99.5", commandMetrics.getExecutionTimePercentile(99.5));
json.writeNumberField("100", commandMetrics.getExecutionTimePercentile(100));
json.writeEndObject();
//
json.writeNumberField("latencyTotal_mean", commandMetrics.getTotalTimeMean());
json.writeObjectFieldStart("latencyTotal");
json.writeNumberField("0", commandMetrics.getTotalTimePercentile(0));
json.writeNumberField("25", commandMetrics.getTotalTimePercentile(25));
json.writeNumberField("50", commandMetrics.getTotalTimePercentile(50));
json.writeNumberField("75", commandMetrics.getTotalTimePercentile(75));
json.writeNumberField("90", commandMetrics.getTotalTimePercentile(90));
json.writeNumberField("95", commandMetrics.getTotalTimePercentile(95));
json.writeNumberField("99", commandMetrics.getTotalTimePercentile(99));
json.writeNumberField("99.5", commandMetrics.getTotalTimePercentile(99.5));
json.writeNumberField("100", commandMetrics.getTotalTimePercentile(100));
json.writeEndObject();
// property values for reporting what is actually seen by the command rather than what was set
// somewhere
HystrixCommandProperties commandProperties = commandMetrics.getProperties();
json.writeNumberField(
"propertyValue_circuitBreakerRequestVolumeThreshold",
commandProperties.circuitBreakerRequestVolumeThreshold().get());
json.writeNumberField(
"propertyValue_circuitBreakerSleepWindowInMilliseconds",
commandProperties.circuitBreakerSleepWindowInMilliseconds().get());
json.writeNumberField(
"propertyValue_circuitBreakerErrorThresholdPercentage",
commandProperties.circuitBreakerErrorThresholdPercentage().get());
json.writeBooleanField(
"propertyValue_circuitBreakerForceOpen",
commandProperties.circuitBreakerForceOpen().get());
json.writeBooleanField(
"propertyValue_circuitBreakerForceClosed",
commandProperties.circuitBreakerForceClosed().get());
json.writeBooleanField(
"propertyValue_circuitBreakerEnabled", commandProperties.circuitBreakerEnabled().get());
json.writeStringField(
"propertyValue_executionIsolationStrategy",
commandProperties.executionIsolationStrategy().get().name());
json.writeNumberField(
"propertyValue_executionIsolationThreadTimeoutInMilliseconds",
commandProperties.executionTimeoutInMilliseconds().get());
json.writeNumberField(
"propertyValue_executionTimeoutInMilliseconds",
commandProperties.executionTimeoutInMilliseconds().get());
json.writeBooleanField(
"propertyValue_executionIsolationThreadInterruptOnTimeout",
commandProperties.executionIsolationThreadInterruptOnTimeout().get());
json.writeStringField(
"propertyValue_executionIsolationThreadPoolKeyOverride",
commandProperties.executionIsolationThreadPoolKeyOverride().get());
json.writeNumberField(
"propertyValue_executionIsolationSemaphoreMaxConcurrentRequests",
commandProperties.executionIsolationSemaphoreMaxConcurrentRequests().get());
json.writeNumberField(
"propertyValue_fallbackIsolationSemaphoreMaxConcurrentRequests",
commandProperties.fallbackIsolationSemaphoreMaxConcurrentRequests().get());
/*
* 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.
*/
// json.put("propertyValue_metricsRollingPercentileEnabled",
// commandProperties.metricsRollingPercentileEnabled().get());
// json.put("propertyValue_metricsRollingPercentileBucketSize",
// commandProperties.metricsRollingPercentileBucketSize().get());
// json.put("propertyValue_metricsRollingPercentileWindow",
// commandProperties.metricsRollingPercentileWindowInMilliseconds().get());
// json.put("propertyValue_metricsRollingPercentileWindowBuckets",
// commandProperties.metricsRollingPercentileWindowBuckets().get());
// json.put("propertyValue_metricsRollingStatisticalWindowBuckets",
// commandProperties.metricsRollingStatisticalWindowBuckets().get());
json.writeNumberField(
"propertyValue_metricsRollingStatisticalWindowInMilliseconds",
commandProperties.metricsRollingStatisticalWindowInMilliseconds().get());
json.writeBooleanField(
"propertyValue_requestCacheEnabled", commandProperties.requestCacheEnabled().get());
json.writeBooleanField(
"propertyValue_requestLogEnabled", commandProperties.requestLogEnabled().get());
json.writeNumberField(
"reportingHosts", 1); // this will get summed across all instances in a cluster
json.writeStringField("threadPool", commandMetrics.getThreadPoolKey().name());
json.writeEndObject();
json.close();
return jsonString.getBuffer().toString();
}