/*
    * Copyright 2017 The Netty Project
    *
    * The Netty Project licenses this file to you 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:
    *
    *   https://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.netty.buffer;
  
  import io.netty.util.internal.StringUtil;
  
  import java.util.List;
  
  /**
   * Exposed metric for {@link PooledByteBufAllocator}.
   */
  @SuppressWarnings("deprecation")
  public final class PooledByteBufAllocatorMetric implements ByteBufAllocatorMetric {
  
      private final PooledByteBufAllocator allocator;
  
      PooledByteBufAllocatorMetric(PooledByteBufAllocator allocator) {
          this.allocator = allocator;
      }
  
      /**
       * Return the number of heap arenas.
       */
      public int numHeapArenas() {
          return allocator.numHeapArenas();
      }
  
      /**
       * Return the number of direct arenas.
       */
      public int numDirectArenas() {
          return allocator.numDirectArenas();
      }
  
      /**
       * Return a {@link List} of all heap {@link PoolArenaMetric}s that are provided by this pool.
       */
      public List<PoolArenaMetric> heapArenas() {
          return allocator.heapArenas();
      }
  
      /**
       * Return a {@link List} of all direct {@link PoolArenaMetric}s that are provided by this pool.
       */
      public List<PoolArenaMetric> directArenas() {
          return allocator.directArenas();
      }
  
      /**
       * Return the number of thread local caches used by this {@link PooledByteBufAllocator}.
       */
      public int numThreadLocalCaches() {
          return allocator.numThreadLocalCaches();
      }
  
      /**
       * Return the size of the tiny cache.
       *
       * @deprecated Tiny caches have been merged into small caches.
       */
      @Deprecated
      public int tinyCacheSize() {
          return allocator.tinyCacheSize();
      }
  
      /**
       * Return the size of the small cache.
       */
      public int smallCacheSize() {
          return allocator.smallCacheSize();
      }
  
      /**
       * Return the size of the normal cache.
       */
      public int normalCacheSize() {
          return allocator.normalCacheSize();
      }
  
      /**
       * Return the chunk size for an arena.
       */
      public int chunkSize() {
          return allocator.chunkSize();
      }
  
     @Override
     public long usedHeapMemory() {
         return allocator.usedHeapMemory();
     }
 
     @Override
     public long usedDirectMemory() {
         return allocator.usedDirectMemory();
     }
 
     @Override
     public String toString() {
         StringBuilder sb = new StringBuilder(256);
         sb.append(StringUtil.simpleClassName(this))
                 .append("(usedHeapMemory: ").append(usedHeapMemory())
                 .append("; usedDirectMemory: ").append(usedDirectMemory())
                 .append("; numHeapArenas: ").append(numHeapArenas())
                 .append("; numDirectArenas: ").append(numDirectArenas())
                 .append("; smallCacheSize: ").append(smallCacheSize())
                 .append("; normalCacheSize: ").append(normalCacheSize())
                 .append("; numThreadLocalCaches: ").append(numThreadLocalCaches())
                 .append("; chunkSize: ").append(chunkSize()).append(')');
         return sb.toString();
     }
 }