[GitHub] WillemJiang commented on a change in pull request #731: [SCB-617] Graceful shutdown with standalone tomcat

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WillemJiang commented on a change in pull request #731: [SCB-617] Graceful shutdown with standalone tomcat
URL: https://github.com/apache/incubator-servicecomb-java-chassis/pull/731#discussion_r192277636
 
 

 ##########
 File path: core/src/main/java/org/apache/servicecomb/core/provider/producer/ProducerProviderManager.java
 ##########
 @@ -17,39 +17,72 @@
 
 package org.apache.servicecomb.core.provider.producer;
 
+import java.io.Closeable;
 import java.util.Collections;
 import java.util.List;
+import java.util.concurrent.ExecutorService;
 
 import javax.inject.Inject;
 
+import org.apache.commons.io.IOUtils;
+import org.apache.servicecomb.core.BootListener;
 import org.apache.servicecomb.core.ProducerProvider;
 import org.apache.servicecomb.core.definition.MicroserviceMeta;
 import org.apache.servicecomb.core.definition.MicroserviceMetaManager;
+import org.apache.servicecomb.core.definition.OperationMeta;
 import org.apache.servicecomb.core.definition.SchemaMeta;
 import org.apache.servicecomb.core.definition.SchemaUtils;
 import org.apache.servicecomb.serviceregistry.RegistryUtils;
 import org.apache.servicecomb.serviceregistry.api.registry.Microservice;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 
 @Component
-public class ProducerProviderManager {
+public class ProducerProviderManager implements BootListener {
+  private static final Logger LOGGER = LoggerFactory.getLogger(ProducerProviderManager.class);
+
   @Autowired(required = false)
   private List<ProducerProvider> producerProviderList = Collections.emptyList();
 
   @Inject
   private MicroserviceMetaManager microserviceMetaManager;
 
+  private MicroserviceMeta microserviceMeta;
+
   public void init() throws Exception {
     for (ProducerProvider provider : producerProviderList) {
       provider.init();
     }
 
     Microservice microservice = RegistryUtils.getMicroservice();
-    MicroserviceMeta microserviceMeta = microserviceMetaManager.getOrCreateMicroserviceMeta(microservice);
+    microserviceMeta = microserviceMetaManager.getOrCreateMicroserviceMeta(microservice);
     for (SchemaMeta schemaMeta : microserviceMeta.getSchemaMetas()) {
       String content = SchemaUtils.swaggerToString(schemaMeta.getSwagger());
       microservice.addSchema(schemaMeta.getSchemaId(), content);
     }
   }
+
+  @Override
+  public void onBootEvent(BootEvent event) {
+    if (!EventType.AFTER_CLOSE.equals(event.getEventType())) {
+      return;
+    }
+
+    for (OperationMeta operationMeta : microserviceMeta.getOperations()) {
+      if (ExecutorService.class.isInstance(operationMeta.getExecutor())) {
 
 Review comment:
   What if the excecutor is the instand of ExecutorService and Closeable at the same time?

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