Finish the most codes of collector service metric collector. Sample like this, @peng-yongsheng

```
17:45:48.486 [pool-2-thread-1] ERROR org.skywalking.apm.collector.core.module.instrument.MetricCollector -
##################################################################################################################
#                                             Collector Service Report                                                                                                                                            #
##################################################################################################################
BaseB:
 P-B:
BaseA:
 P-A:
  public void org.skywalking.apm.collector.core.module.ModuleABusiness1Impl.print():
   Avg=1585 (nano), Success Rate=100%
```

apm-collector/apm-collector-core/src/main/java/org/skywalking/apm/collector/core/module/ModuleProvider.java

@@ -96,7 +96,7 @@ public abstract class ModuleProvider {
         Service service) throws ServiceNotProvidedException {
         if (serviceType.isInstance(service)) {
             if (manager.isServiceInstrument()) {
-                service = ServiceInstrumentation.INSTANCE.buildServiceUnderMonitor(service);
+                service = ServiceInstrumentation.INSTANCE.buildServiceUnderMonitor(module.name(), name(), service);
             }
             this.services.put(serviceType, service);
         } else {

apm-collector/apm-collector-core/src/main/java/org/skywalking/apm/collector/core/module/instrument/MetricCollector.java

@@ -18,11 +18,154 @@
 
 package org.skywalking.apm.collector.core.module.instrument;
 
+import java.lang.reflect.Method;
+import java.util.HashMap;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicLong;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 /**
  * The <code>MetricCollector</code> collects the service metrics by Module/Provider/Service structure.
  */
-public enum MetricCollector {
+public enum MetricCollector implements Runnable {
     INSTANCE;
 
+    private final Logger logger = LoggerFactory.getLogger(MetricCollector.class);
+    private HashMap<String, ModuleMetric> modules = new HashMap<>();
+
+    MetricCollector() {
+        ScheduledExecutorService service = Executors
+            .newSingleThreadScheduledExecutor();
+        service.scheduleAtFixedRate(this, 10, 60, TimeUnit.SECONDS);
+    }
+
+    @Override
+    public void run() {
+        if (!logger.isDebugEnabled()) {
+            return;
+        }
+        StringBuilder report = new StringBuilder();
+        report.append("\n");
+        report.append("##################################################################################################################\n");
+        report.append("#                                             Collector Service Report                                           #\n");
+        report.append("##################################################################################################################\n");
+        modules.forEach((moduleName, moduleMetric) -> {
+            report.append(moduleName).append(":\n");
+            moduleMetric.providers.forEach((providerName, providerMetric) -> {
+                report.append("\t").append(providerName).append(":\n");
+                providerMetric.services.forEach((serviceName, serviceMetric) -> {
+                    serviceMetric.methodMetrics.forEach((method, metric) -> {
+                        report.append("\t\t").append(method).append(":\n");
+                        report.append("\t\t\t").append(metric).append("\n");
+                        serviceMetric.methodMetrics.put(method, new ServiceMethodMetric());
+                    });
+                });
+            });
+        });
+
+        logger.debug(report.toString());
+
+    }
+
+    ServiceMetric registerService(String module, String provider, String service) {
+        return initIfAbsent(module).initIfAbsent(provider).initIfAbsent(service);
+    }
+
+    private ModuleMetric initIfAbsent(String moduleName) {
+        if (!modules.containsKey(moduleName)) {
+            ModuleMetric metric = new ModuleMetric(moduleName);
+            modules.put(moduleName, metric);
+            return metric;
+        }
+        return modules.get(moduleName);
+    }
+
+    private class ModuleMetric {
+        private String moduleName;
+        private HashMap<String, ProviderMetric> providers = new HashMap<>();
+
+        public ModuleMetric(String moduleName) {
+            this.moduleName = moduleName;
+        }
+
+        private ProviderMetric initIfAbsent(String providerName) {
+            if (!providers.containsKey(providerName)) {
+                ProviderMetric metric = new ProviderMetric(providerName);
+                providers.put(providerName, metric);
+                return metric;
+            }
+            return providers.get(providerName);
+        }
+    }
+
+    private class ProviderMetric {
+        private String providerName;
+        private HashMap<String, ServiceMetric> services = new HashMap<>();
+
+        public ProviderMetric(String providerName) {
+            this.providerName = providerName;
+        }
+
+        private ServiceMetric initIfAbsent(String serviceName) {
+            if (!services.containsKey(serviceName)) {
+                ServiceMetric metric = new ServiceMetric(serviceName);
+                services.put(serviceName, metric);
+                return metric;
+            }
+            return services.get(serviceName);
+        }
+    }
+
+    class ServiceMetric {
+        private String serviceName;
+        private ConcurrentHashMap<Method, ServiceMethodMetric> methodMetrics = new ConcurrentHashMap<>();
+
+        public ServiceMetric(String serviceName) {
+            this.serviceName = serviceName;
+        }
+
+        void trace(Method method, long nano, boolean occurException) {
+            if (logger.isDebugEnabled()) {
+                ServiceMethodMetric metric = methodMetrics.get(method);
+                if (metric == null) {
+                    ServiceMethodMetric methodMetric = new ServiceMethodMetric();
+                    methodMetrics.putIfAbsent(method, methodMetric);
+                    metric = methodMetrics.get(method);
+                }
+                metric.add(nano, occurException);
+            }
+        }
+    }
+
+    private class ServiceMethodMetric {
+        private AtomicLong totalTimeNano;
+        private AtomicLong counter;
+        private AtomicLong errorCounter;
+
+        public ServiceMethodMetric() {
+            totalTimeNano = new AtomicLong(0);
+            counter = new AtomicLong(0);
+            errorCounter = new AtomicLong(0);
+        }
+
+        private void add(long nano, boolean occurException) {
+            totalTimeNano.addAndGet(nano);
+            counter.incrementAndGet();
+            if (occurException)
+                errorCounter.incrementAndGet();
+        }
 
+        @Override public String toString() {
+            if (counter.longValue() == 0) {
+                return "Avg=N/A";
+            }
+            return "Avg=" + (totalTimeNano.longValue() / counter.longValue()) + " (nano)" +
+                ", Success Rate=" + (counter.longValue() - errorCounter.longValue()) * 100 / counter.longValue() +
+                "%";
+        }
+    }
 }

apm-collector/apm-collector-core/src/main/java/org/skywalking/apm/collector/core/module/instrument/ServiceInstrumentation.java

@@ -42,7 +42,7 @@ public enum ServiceInstrumentation {
     private final Logger logger = LoggerFactory.getLogger(ServiceInstrumentation.class);
     private ElementMatcher<? super MethodDescription> excludeObjectMethodsMatcher;
 
-    public Service buildServiceUnderMonitor(Service implementation) {
+    public Service buildServiceUnderMonitor(String moduleName, String providerName, Service implementation) {
         if (implementation instanceof TracedService) {
             // Duplicate service instrument, ignore.
             return implementation;
@@ -51,7 +51,7 @@ public enum ServiceInstrumentation {
             return new ByteBuddy().subclass(implementation.getClass())
                 .implement(TracedService.class)
                 .method(getDefaultMatcher()).intercept(
-                    MethodDelegation.withDefaultConfiguration().to(new ServiceMetricCollector())
+                    MethodDelegation.withDefaultConfiguration().to(new ServiceMetricTracing(moduleName, providerName, implementation.getClass().getName()))
                 ).make().load(getClass().getClassLoader()
                 ).getLoaded().newInstance();
         } catch (InstantiationException e) {

apm-collector/apm-collector-core/src/main/java/org/skywalking/apm/collector/core/module/instrument/ServiceMetricCollector.java → apm-collector/apm-collector-core/src/main/java/org/skywalking/apm/collector/core/module/instrument/ServiceMetricTracing.java

@@ -29,7 +29,12 @@ import net.bytebuddy.implementation.bind.annotation.This;
 /**
  * @author wu-sheng
  */
-public class ServiceMetricCollector {
+public class ServiceMetricTracing {
+    private MetricCollector.ServiceMetric serviceMetric;
+
+    public ServiceMetricTracing(String module, String provider, String service) {
+        serviceMetric = MetricCollector.INSTANCE.registerService(module, provider, service);
+    }
 
     @RuntimeType
     public Object intercept(@This Object obj,
@@ -37,6 +42,17 @@ public class ServiceMetricCollector {
         @SuperCall Callable<?> zuper,
         @Origin Method method
     ) throws Throwable {
-        return zuper.call();
+        boolean occurError = false;
+        long startNano = System.nanoTime();
+        long endNano;
+        try {
+            return zuper.call();
+        } catch (Throwable t) {
+            occurError = true;
+            throw t;
+        } finally {
+            endNano = System.nanoTime();
+            serviceMetric.trace(method, endNano - startNano, occurError);
+        }
     }
 }

apm-collector/apm-collector-core/src/test/java/org/skywalking/apm/collector/core/module/ModuleManagerTest.java

@@ -54,5 +54,23 @@ public class ModuleManagerTest {
         BaseModuleA.ServiceABusiness1 serviceABusiness1 = manager.find("BaseA").getService(BaseModuleA.ServiceABusiness1.class);
 
         Assert.assertTrue(serviceABusiness1 instanceof TracedService);
+
+//        for (int i = 0; i < 10000; i++)
+//            serviceABusiness1.print();
+//
+//        try {
+//            Thread.sleep(60 * 1000L);
+//        } catch (InterruptedException e) {
+//            e.printStackTrace();
+//        }
+//
+//        for (int i = 0; i < 10000; i++)
+//            serviceABusiness1.print();
+//
+//        try {
+//            Thread.sleep(120 * 1000L);
+//        } catch (InterruptedException e) {
+//            e.printStackTrace();
+//        }
     }
 }