sdclient/discovery-service/src/main/java/org/onap/msb/sdclient/wrapper/consul/cache/HealthCache.java

   1 /**
   2  * Copyright 2016-2017 ZTE, Inc. and others.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.onap.msb.sdclient.wrapper.consul.cache;
  17
  18 import java.math.BigInteger;
  19 import java.util.List;
  20
  21 import org.onap.msb.sdclient.wrapper.consul.HealthClient;
  22 import org.onap.msb.sdclient.wrapper.consul.async.ConsulResponseCallback;
  23 import org.onap.msb.sdclient.wrapper.consul.model.health.ServiceHealth;
  24
  25 import com.google.common.base.Function;
  26
  27 public class HealthCache extends ConsulCache<String, ServiceHealth>{
  28
  29     private  final String serviceName;
  30
  31     private  HealthCache(Function<ServiceHealth, String> keyConversion,
  32             ConsulCache.CallbackConsumer<ServiceHealth> callbackConsumer,String serviceName) {
  33         super(keyConversion, callbackConsumer);
  34         this.serviceName=serviceName;
  35         // TODO Auto-generated constructor stub
  36     }
  37
  38
  39     public static HealthCache newCache(
  40         final HealthClient healthClient,
  41         final String serviceName,
  42         final int watchSeconds){
  43        Function<ServiceHealth,String> keyExtractor = new Function<ServiceHealth, String>() {
  44            @Override
  45            public String apply(ServiceHealth input) {
  46                //return input.getKey().substring(rootPath.length() + 1);
  47                return input.getService().getId();
  48            }
  49        };
  50
  51        final CallbackConsumer<ServiceHealth> callbackConsumer = new CallbackConsumer<ServiceHealth>() {
  52            @Override
  53            public void consume(BigInteger index, ConsulResponseCallback<List<ServiceHealth>> callback) {
  54                healthClient.getHealthyServiceInstances(serviceName,  watchParams(index, watchSeconds),callback);
  55            }
  56        };
  57
  58
  59        return new HealthCache(keyExtractor, callbackConsumer,serviceName);
  60
  61
  62     }
  63
  64     public String getServiceName(){
  65         return this.serviceName;
  66     }
  67
  68
  69 }