[GitHub] liubao68 commented on a change in pull request #609: [SCB-383] Metrics subscribe invocation life event and statistics

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liubao68 commented on a change in pull request #609: [SCB-383] Metrics subscribe invocation life event and statistics
URL: https://github.com/apache/incubator-servicecomb-java-chassis/pull/609#discussion_r177318158
 
 

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 File path: foundations/foundation-metrics/src/main/java/org/apache/servicecomb/foundation/metrics/MetricsBootstrap.java
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 @@ -0,0 +1,82 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.servicecomb.foundation.metrics;
+
+import java.util.List;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.TimeUnit;
+
+import org.apache.servicecomb.foundation.common.utils.SPIServiceUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.google.common.collect.Lists;
+import com.google.common.eventbus.EventBus;
+import com.google.common.util.concurrent.ThreadFactoryBuilder;
+import com.netflix.spectator.api.CompositeRegistry;
+import com.netflix.spectator.api.Meter;
+
+public class MetricsBootstrap {
+  private static final Logger LOGGER = LoggerFactory.getLogger(MetricsBootstrap.class);
+
+  private CompositeRegistry globalRegistry;
+
+  private EventBus eventBus;
+
+  private MetricsBootstrapConfig config = new MetricsBootstrapConfig();
+
+  private ScheduledExecutorService executorService;
+
+  public void start(CompositeRegistry globalRegistry, EventBus eventBus) {
+    this.globalRegistry = globalRegistry;
+    this.eventBus = eventBus;
+    this.executorService = Executors.newScheduledThreadPool(1,
+        new ThreadFactoryBuilder()
+            .setNameFormat("spectator-poller-%d")
+            .build());
+
+    loadMetricsInitializers();
+    startPoll();
+  }
+
+  public void shutdown() {
+    executorService.shutdown();
 
 Review comment:
   Do you actually mean shutdownNow? 

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