1 files changed, 121 insertions, 0 deletions
diff --git a/apiroute/apiroute-service/src/main/java/org/onap/msb/apiroute/wrapper/consulextend/expose/ServiceModifyIndexFilter.java b/apiroute/apiroute-service/src/main/java/org/onap/msb/apiroute/wrapper/consulextend/expose/ServiceModifyIndexFilter.java
new file mode 100644
index 0000000..38fb7c6
--- /dev/null
+++ b/apiroute/apiroute-service/src/main/java/org/onap/msb/apiroute/wrapper/consulextend/expose/ServiceModifyIndexFilter.java
@@ -0,0 +1,121 @@
+package org.onap.msb.apiroute.wrapper.consulextend.expose;
+
+import java.util.List;
+import java.util.concurrent.atomic.AtomicReference;
+
+import org.onap.msb.apiroute.wrapper.consulextend.model.health.Service;
+import org.onap.msb.apiroute.wrapper.consulextend.model.health.ServiceHealth;
+import org.onap.msb.apiroute.wrapper.util.ServiceFilter;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.google.common.collect.ImmutableList;
+import com.orbitz.consul.model.ConsulResponse;
+import com.orbitz.consul.model.health.HealthCheck;
+
+public class ServiceModifyIndexFilter implements WatchTask.Filter<List<ServiceHealth>> {
+
+  private final AtomicReference<ImmutableList<ServiceHealth>> lastResponse =
+      new AtomicReference<ImmutableList<ServiceHealth>>(ImmutableList.<ServiceHealth>of());
+
+  private final static Logger LOGGER = LoggerFactory.getLogger(ServiceModifyIndexFilter.class);
+
+
+  @Override
+  public boolean filter(ConsulResponse<List<ServiceHealth>> object) {
+    // TODO Auto-generated method stub
+
+    List<ServiceHealth> newList=object.getResponse();
+    if(realFilter(newList)){
+      lastResponse.set(ImmutableList.copyOf(newList));
+      return true;
+    }
+    
+    return false;
+  }
+
+  private boolean realFilter(List<ServiceHealth> newList) {
+    // 1)判断list的size，不等则改变
+    if (newList.size() != lastResponse.get().size()) {
+      // 第一次不打印
+      if (lastResponse.get().size() != 0) {
+        LOGGER.info(newList.get(0).getService().getService()
+            + " instance count is different.new_count:" + newList.size() + " old_count:"
+            + lastResponse.get().size());
+      }
+
+      return true;
+    }
+    
+    
+    // 2）循环服务实例判断服务内容和健康检查是否改变
+    for (ServiceHealth newData : newList) {
+      ServiceHealth sameIdOldData = findSameIdInOldList(newData);
+      // 若在oldlist中不存在，则改变
+      if (sameIdOldData == null) {
+
+          LOGGER.info(newData.getService().getId()
+                  + " is a new service instance.the createindex:"
+                  + newData.getService().getCreateIndex()
+                  + " the modifyIndex:"
+                  + newData.getService().getModifyIndex());
+
+          return true;
+      }
+
+      // 若在oldlist中存在，则比较ModifyIndex的值和健康检查状态.不等则改变
+      if(!compareService(newData,sameIdOldData)){
+        LOGGER.info(newData.getService().getId() +" instance  is change because of modifyIndex  or health check" );
+        return true;
+      }
+    }
+    
+    return false;
+
+
+  }
+
+
+  private boolean compareService(ServiceHealth oldData,ServiceHealth newData) {
+    
+    return compareServiceInfo(oldData.getService(),newData.getService()) && 
+        compareServiceHealthStatus(oldData.getChecks(),newData.getChecks());
+    
+  }
+  
+
+
+  private boolean compareServiceInfo(Service oldServiceInfo, Service newServiceInfo) {
+    if (oldServiceInfo.getModifyIndex() != newServiceInfo.getModifyIndex()) {
+      LOGGER.info(newServiceInfo.getId() + " new_modifyIndex:"
+          + newServiceInfo.getModifyIndex() + " old_modifyIndex:"
+          + oldServiceInfo.getModifyIndex());
+      return false;
+    }
+     return true;
+  }
+  
+  private boolean compareServiceHealthStatus(List<HealthCheck>  oldData, List<HealthCheck>  newData) {
+    boolean oldHealthCheck=ServiceFilter.getInstance().isFilterHealthCheck(oldData);
+    boolean newHealthCheck=ServiceFilter.getInstance().isFilterHealthCheck(newData);
+    return oldHealthCheck==newHealthCheck;     
+     
+  }
+
+
+  private ServiceHealth findSameIdInOldList(ServiceHealth newData) {
+    for (ServiceHealth oldData : lastResponse.get()) {
+      if (oldData.getService().getId().equals(newData.getService().getId())) {
+        return oldData;
+      }
+    }
+
+    return null;
+  }
+
+  public boolean resetModifyIndex() {
+    // clear last response
+    lastResponse.set(ImmutableList.<ServiceHealth>of());
+    return true;
+  }
+}