/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF 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
 *
 *     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 org.apache.hadoop.hbase.quotas;

import java.util.List;

import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceStability;
import org.apache.hadoop.hbase.client.Mutation;
import org.apache.hadoop.hbase.client.Result;

/**
 * Noop operation quota returned when no quota is associated to the user/table
 */
@InterfaceAudience.Private
@InterfaceStability.Evolving
class NoopOperationQuota implements OperationQuota {
  private static OperationQuota instance = new NoopOperationQuota();

  private NoopOperationQuota() {
    // no-op
  }

  public static OperationQuota get() {
    return instance;
  }

  @Override
  public void checkQuota(int numWrites, int numReads, int numScans)
      throws ThrottlingException {
    // no-op
  }

  @Override
  public void close() {
    // no-op
  }

  @Override
  public void addGetResult(final Result result) {
    // no-op
  }

  @Override
  public void addScanResult(final List<Result> results) {
    // no-op
  }

  @Override
  public void addMutation(final Mutation mutation) {
    // no-op
  }

  @Override
  public long getReadAvailable() {
    return Long.MAX_VALUE;
  }

  @Override
  public long getWriteAvailable() {
    return Long.MAX_VALUE;
  }

  @Override
  public long getAvgOperationSize(OperationType type) {
    return -1;
  }
}