content: /*
   * Copyright 2010 Proofpoint, Inc.
   *
   * Licensed 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 io.airlift.discovery.server;
  
  import com.google.common.base.Preconditions;
  import com.google.common.collect.ImmutableSet;
  import com.google.common.collect.Maps;
  
  import java.util.Map;
  import java.util.Set;
  
  import static com.google.common.base.Predicates.and;
  import static com.google.common.collect.Iterables.filter;
  import static io.airlift.discovery.server.Service.matchesPool;
  import static io.airlift.discovery.server.Service.matchesType;
  
  public class InMemoryStaticStore
          implements StaticStore
  {
      private final Map<Id<Service>, Service> services = Maps.newHashMap();
  
      @Override
      public synchronized void put(Service service)
      {
          Preconditions.checkNotNull(service, "service is null");
          Preconditions.checkArgument(service.getNodeId() == null, "service.nodeId should be null");
  
          services.put(service.getId(), service);
      }
  
      @Override
      public synchronized void delete(Id<Service> id)
      {
          services.remove(id);
      }
  
      @Override
      public synchronized Set<Service> getAll()
      {
          return ImmutableSet.copyOf(services.values());
      }
  
      @Override
      public synchronized Set<Service> get(String type)
      {
          return ImmutableSet.copyOf(filter(getAll(), matchesType(type)));
      }
  
      @Override
      public synchronized Set<Service> get(String type, String pool)
      {
          return ImmutableSet.copyOf(filter(getAll(), and(matchesType(type), matchesPool(pool))));
      }
  }
  