/*
    * Copyright 2018 SPF4J.
    *
    * 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 org.spf4j.test.log;
  
  import java.util.concurrent.TimeUnit;
  import org.spf4j.base.TimeSource;
  import org.spf4j.log.Level;
  
  /**
   *
   * @author Zoltan Farkas
   */
  abstract class LogMatchingHandlerAsync extends LogMatchingHandler {
  
    private final long timeout;
    private final TimeUnit tu;
    private final Object sync;
  
    LogMatchingHandlerAsync(
            final Level minLevel, final long timeout, final TimeUnit tu, final LogStreamMatcher streamMatcher) {
      super(minLevel, streamMatcher);
      this.timeout = timeout;
      this.tu = tu;
      this.sync = new Object();
    }
  
    public abstract void close();
  
  
    @Override
    public TestLogRecord handle(final TestLogRecord record) {
      TestLogRecord result = super.handle(record);
      synchronized (sync) {
        sync.notifyAll();
      }
      return result;
    }
  
  
  
    @Override
    public void assertObservation() {
      long deadline = TimeSource.nanoTime() + tu.toNanos(timeout);
      try {
        synchronized (sync) {
          while (!streamMatcher.isMatched()) {
            long nanosToDeadline = deadline - TimeSource.nanoTime();
            if (nanosToDeadline <= 0) {
                throw new AssertionError(this);
            }
            TimeUnit.NANOSECONDS.timedWait(sync, nanosToDeadline);
          }
        }
      } catch (InterruptedException ex) {
        Thread.currentThread().isInterrupted();
      }
    }
  
    @Override
    public String toString() {
      return "LogMatchingHandlerAsync{" + "timeout=" + timeout + ", tu=" + tu + ", super = " + super.toString() + '}';
    }
  
  }