我正在尝试使用hystrix来监控某个网络呼叫。但我试图监控的所有指标总是空的。我做错了什么？
我通过实现一个返回pow计算的（某种程度上）RESTful接口来模拟网络调用：
GetPowerCommand gpc = new GetPowerCommand(5, 82);
powerMetrics = gpc.getMetrics();
这就是我调用hystrix命令并期望得到一些指标（至少请求：不是0）
boolean run = true;
while (run) {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
run = false;
}
System.out.println("GetPowerCommand.run(): " + gpc.run());
System.out.println("GetPowerCommand.run(): " + gpc.run());
System.out.println("getStatsStringFromMetrics(powerMetrics): " + getStatsStringFromMetrics(powerMetrics));
}
但我得到的只是：
GetPowerCommand.run(): <p>I guess .. </p><p>2^5 = 32</p>
GetPowerCommand.run(): <p>I guess .. </p><p>2^5 = 32</p>
getStatsStringFromMetrics(powerMetrics): Requests: 0 Errors: 0 (0%) Mean: 0 50th: 0 75th: 0 90th: 0 99th: 0
GetPowerCommand.run(): <p>I guess .. </p><p>2^5 = 32</p>
GetPowerCommand.run(): <p>I guess .. </p><p>2^5 = 32</p>
getStatsStringFromMetrics(powerMetrics): Requests: 0 Errors: 0 (0%) Mean: 0 50th: 0 75th: 0 90th: 0 99th: 0
编辑：我的指标检索方法：
private static 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.getTotalTimeMean()).append(" ");
m.append("50th: ").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(" ");
}
return m.toString();
}