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.collect.ImmutableSet;
  import com.google.inject.Inject;
  import io.airlift.discovery.store.DistributedStore;
  import io.airlift.discovery.store.Entry;
  import io.airlift.json.JsonCodec;
  
  import java.util.Set;
  
  import static com.google.common.base.Preconditions.checkNotNull;
  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 ReplicatedStaticStore
          implements StaticStore
  {
      private final DistributedStore store;
      private final JsonCodec<Service> codec;
  
      @Inject
      public ReplicatedStaticStore(@ForStaticStore DistributedStore store, JsonCodec<Service> codec)
      {
          this.store = checkNotNull(store, "store is null");
          this.codec = checkNotNull(codec, "codec is null");
      }
  
      @Override
      public void put(Service service)
      {
          byte[] key = service.getId().getBytes();
          byte[] value = codec.toJsonBytes(service);
  
          store.put(key, value);
      }
  
      @Override
      public void delete(Id<Service> id)
      {
          store.delete(id.getBytes());
      }
  
      @Override
      public Set<Service> getAll()
      {
          ImmutableSet.Builder<Service> builder = ImmutableSet.builder();
          for (Entry entry : store.getAll()) {
              builder.add(codec.fromJson(entry.getValue()));
          }
  
          return builder.build();
      }
  
      @Override
      public Set<Service> get(String type)
      {
          return ImmutableSet.copyOf(filter(getAll(), matchesType(type)));
      }
  
      @Override
      public Set<Service> get(String type, String pool)
      {
          return ImmutableSet.copyOf(filter(getAll(), and(matchesType(type), matchesPool(pool))));
      }
  }
  