/*
    * Copyright 2021 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.netty5.buffer.api.pool;
  
  import io.netty5.util.internal.StringUtil;
  
  import java.util.List;
  
  /**
   * Exposed metric for {@link PooledBufferAllocator}.
   */
  final class PooledBufferAllocatorMetric implements BufferAllocatorMetric {
  
      private final PooledBufferAllocator allocator;
  
      PooledBufferAllocatorMetric(PooledBufferAllocator allocator) {
          this.allocator = allocator;
      }
  
      @Override
      public int numArenas() {
          return allocator.numArenas();
      }
  
      @Override
      public List<PoolArenaMetric> arenaMetrics() {
          return allocator.arenaMetrics();
      }
  
      @Override
      public int numThreadLocalCaches() {
          return allocator.numThreadLocalCaches();
      }
  
      @Override
      public int smallCacheSize() {
          return allocator.smallCacheSize();
      }
  
      @Override
      public int normalCacheSize() {
          return allocator.normalCacheSize();
      }
  
      @Override
      public int chunkSize() {
          return allocator.chunkSize();
      }
  
      @Override
      public long usedMemory() {
          return allocator.usedMemory();
      }
  
      @Override
      public long pinnedMemory() {
          return allocator.pinnedMemory();
      }
  
      @Override
      public String toString() {
          StringBuilder sb = new StringBuilder(256);
          sb.append(StringUtil.simpleClassName(this))
                  .append("(usedMemory: ").append(usedMemory())
                  .append("; pinnedMemory: ").append(pinnedMemory())
                  .append("; numArenas: ").append(numArenas())
                  .append("; smallCacheSize: ").append(smallCacheSize())
                  .append("; normalCacheSize: ").append(normalCacheSize())
                  .append("; numThreadLocalCaches: ").append(numThreadLocalCaches())
                  .append("; chunkSize: ").append(chunkSize()).append(')');
          return sb.toString();
      }
  }