private void addServiceData(JsonGenerator json, ServiceInstance localService) throws IOException {
json.writeObjectFieldStart("origin");
json.writeStringField("host", localService.getHost());
json.writeNumberField("port", localService.getPort());
json.writeStringField("serviceId", localService.getServiceId());
if (this.properties.isSendId()) {
json.writeStringField("id", this.context.getId());
}
json.writeEndObject();
}
/**
* TODO: Complement this with a simpler version without fallback-url!
*
* @param serviceId
* @param fallbackUri
* @return
*/
public URI getServiceUrl(String serviceId, String fallbackUri) {
URI uri = null;
try {
ServiceInstance instance = loadBalancer.choose(serviceId);
uri = instance.getUri();
} catch (RuntimeException e) {
// Eureka not available, use fallback
uri = URI.create(fallbackUri);
}
return uri;
}
@Test
public void test_convert_with_metadata() {
ServiceInstance service = new DefaultServiceInstance("test", "localhost", 80, false);
service.getMetadata().put("health.path", "ping");
service.getMetadata().put("management.context-path", "mgmt");
service.getMetadata().put("management.port", "1234");
Application application = new DefaultServiceInstanceConverter().convert(service);
assertThat(application.getId(), nullValue());
assertThat(application.getName(), is("test"));
assertThat(application.getServiceUrl(), is("http://localhost:80"));
assertThat(application.getManagementUrl(), is("http://localhost:1234/mgmt"));
assertThat(application.getHealthUrl(), is("http://localhost:1234/mgmt/ping"));
}
@ApiOperation(value = "/add", notes = "求和")
@RequestMapping(value = "/add", method = RequestMethod.GET)
public Integer add(
@ApiParam(required = true, name = "a", value = "") @RequestParam Integer a,
@ApiParam(required = true, name = "b", value = "") @RequestParam Integer b) {
ServiceInstance instance = client.getLocalServiceInstance();
Integer r = a + b;
logger.info(
"/add, host:"
+ instance.getHost()
+ ", service_id:"
+ instance.getServiceId()
+ ", result:"
+ r);
return r;
}
@Scheduled(fixedRateString = "${hystrix.stream.amqp.gatherRate:500}")
public void gatherMetrics() {
try {
// command metrics
Collection<HystrixCommandMetrics> instances = HystrixCommandMetrics.getInstances();
if (!instances.isEmpty()) {
log.trace("gathering metrics size: " + instances.size());
}
ServiceInstance localService = this.discoveryClient.getLocalServiceInstance();
for (HystrixCommandMetrics commandMetrics : instances) {
HystrixCommandKey key = commandMetrics.getCommandKey();
HystrixCircuitBreaker circuitBreaker = HystrixCircuitBreaker.Factory.getInstance(key);
StringWriter jsonString = new StringWriter();
JsonGenerator json = this.jsonFactory.createGenerator(jsonString);
json.writeStartObject();
addServiceData(json, localService);
json.writeObjectFieldStart("data");
json.writeStringField("type", "HystrixCommand");
String name = key.name();
if (this.properties.isPrefixMetricName()) {
name = localService.getServiceId() + "." + name;
}
json.writeStringField("name", 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());
}
HystrixCommandMetrics.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));
json.writeNumberField(
"rollingCountFallbackFailure",
commandMetrics.getRollingCount(HystrixRollingNumberEvent.FALLBACK_FAILURE));
json.writeNumberField(
"rollingCountFallbackRejection",
commandMetrics.getRollingCount(HystrixRollingNumberEvent.FALLBACK_REJECTION));
json.writeNumberField(
"rollingCountFallbackSuccess",
commandMetrics.getRollingCount(HystrixRollingNumberEvent.FALLBACK_SUCCESS));
json.writeNumberField(
"rollingCountResponsesFromCache",
commandMetrics.getRollingCount(HystrixRollingNumberEvent.RESPONSE_FROM_CACHE));
json.writeNumberField(
"rollingCountSemaphoreRejected",
commandMetrics.getRollingCount(HystrixRollingNumberEvent.SEMAPHORE_REJECTED));
json.writeNumberField(
"rollingCountShortCircuited",
commandMetrics.getRollingCount(HystrixRollingNumberEvent.SHORT_CIRCUITED));
json.writeNumberField(
"rollingCountSuccess",
commandMetrics.getRollingCount(HystrixRollingNumberEvent.SUCCESS));
json.writeNumberField(
"rollingCountThreadPoolRejected",
commandMetrics.getRollingCount(HystrixRollingNumberEvent.THREAD_POOL_REJECTED));
json.writeNumberField(
"rollingCountTimeout",
commandMetrics.getRollingCount(HystrixRollingNumberEvent.TIMEOUT));
json.writeNumberField(
"currentConcurrentExecutionCount", commandMetrics.getCurrentConcurrentExecutionCount());
// 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.executionIsolationThreadTimeoutInMilliseconds().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());
// TODO
/*
* 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.writeEndObject(); // end data attribute
json.writeEndObject();
json.close();
// output
this.jsonMetrics.add(jsonString.getBuffer().toString());
}
// thread pool metrics
for (HystrixThreadPoolMetrics threadPoolMetrics : HystrixThreadPoolMetrics.getInstances()) {
HystrixThreadPoolKey key = threadPoolMetrics.getThreadPoolKey();
StringWriter jsonString = new StringWriter();
JsonGenerator json = this.jsonFactory.createGenerator(jsonString);
json.writeStartObject();
addServiceData(json, localService);
json.writeObjectFieldStart("data");
json.writeStringField("type", "HystrixThreadPool");
json.writeStringField("name", key.name());
json.writeNumberField("currentTime", System.currentTimeMillis());
json.writeNumberField(
"currentActiveCount", threadPoolMetrics.getCurrentActiveCount().intValue());
json.writeNumberField(
"currentCompletedTaskCount",
threadPoolMetrics.getCurrentCompletedTaskCount().longValue());
json.writeNumberField(
"currentCorePoolSize", threadPoolMetrics.getCurrentCorePoolSize().intValue());
json.writeNumberField(
"currentLargestPoolSize", threadPoolMetrics.getCurrentLargestPoolSize().intValue());
json.writeNumberField(
"currentMaximumPoolSize", threadPoolMetrics.getCurrentMaximumPoolSize().intValue());
json.writeNumberField("currentPoolSize", threadPoolMetrics.getCurrentPoolSize().intValue());
json.writeNumberField(
"currentQueueSize", threadPoolMetrics.getCurrentQueueSize().intValue());
json.writeNumberField(
"currentTaskCount", threadPoolMetrics.getCurrentTaskCount().longValue());
json.writeNumberField(
"rollingCountThreadsExecuted", threadPoolMetrics.getRollingCountThreadsExecuted());
json.writeNumberField(
"rollingMaxActiveThreads", threadPoolMetrics.getRollingMaxActiveThreads());
json.writeNumberField(
"propertyValue_queueSizeRejectionThreshold",
threadPoolMetrics.getProperties().queueSizeRejectionThreshold().get());
json.writeNumberField(
"propertyValue_metricsRollingStatisticalWindowInMilliseconds",
threadPoolMetrics
.getProperties()
.metricsRollingStatisticalWindowInMilliseconds()
.get());
json.writeNumberField("reportingHosts", 1); // this will get summed across
// all instances in a cluster
json.writeEndObject(); // end of data object
json.writeEndObject();
json.close();
// output to stream
this.jsonMetrics.add(jsonString.getBuffer().toString());
}
} catch (Exception ex) {
log.error("Error adding metrics to queue", ex);
}
}
