content: /*
   * 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 com.datastax.oss.driver.api.core.connection;
  
  import com.datastax.oss.driver.api.core.AllNodesFailedException;
  import com.datastax.oss.driver.api.core.DriverException;
  import com.datastax.oss.driver.api.core.cql.ExecutionInfo;
  import edu.umd.cs.findbugs.annotations.NonNull;
  
  /**
   * Indicates that a write was attempted on a connection that already handles too many simultaneous
   * requests.
   *
   * <p>This might happen under heavy load. The driver will automatically try the next node in the
   * query plan. Therefore, the only way that the client can observe this exception is as part of a
   * {@link AllNodesFailedException}.
   */
  public class BusyConnectionException extends DriverException {
  
    // Note: the driver doesn't use this constructor anymore, it is preserved only for backward
    // compatibility.
    @SuppressWarnings("unused")
    public BusyConnectionException(int maxAvailableIds) {
      this(
          String.format(
              "Connection has exceeded its maximum of %d simultaneous requests", maxAvailableIds),
          null,
          false);
    }
  
    public BusyConnectionException(String message) {
      this(message, null, false);
    }
  
    private BusyConnectionException(
        String message, ExecutionInfo executionInfo, boolean writableStackTrace) {
      super(message, executionInfo, null, writableStackTrace);
    }
  
    @Override
    @NonNull
    public DriverException copy() {
      return new BusyConnectionException(getMessage(), getExecutionInfo(), true);
    }
  }
  