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/*
 * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 * 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 software.amazon.jdbc.plugin;

import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import java.util.logging.Logger;
import software.amazon.jdbc.JdbcCallable;
import software.amazon.jdbc.util.Messages;

public class ExecutionTimeConnectionPlugin extends AbstractConnectionPlugin {

  private static long executionTime = 0L;

  private static final Logger LOGGER =
      Logger.getLogger(ExecutionTimeConnectionPlugin.class.getName());
  private static final Set subscribedMethods =
      Collections.unmodifiableSet(new HashSet<>(Collections.singletonList("*")));

  @Override
  public Set getSubscribedMethods() {
    return subscribedMethods;
  }

  @Override
  public  T execute(
      final Class resultClass,
      final Class exceptionClass,
      final Object methodInvokeOn,
      final String methodName,
      final JdbcCallable jdbcMethodFunc,
      final Object[] jdbcMethodArgs)
      throws E {

    final long startTime = System.nanoTime();

    final T result = jdbcMethodFunc.call();

    final long elapsedTimeNanos = System.nanoTime() - startTime;
    LOGGER.fine(
        () -> Messages.get(
            "ExecutionTimeConnectionPlugin.executionTime",
            new Object[] {methodName, elapsedTimeNanos}));
    executionTime += elapsedTimeNanos;

    return result;
  }

  public static void resetExecutionTime() {
    executionTime = 0L;
  }

  public static long getTotalExecutionTime() {
    return executionTime;
  }
}