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