/*
 * Copyright DataStax, 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 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.
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 AllNodesFailedException. /**
 * 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 {

  public BusyConnectionException(int maxAvailableIds) {
    this(
        String.format(
            "Connection has exceeded its maximum of %d simultaneous requests", maxAvailableIds),
        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);
  }
}