/*
 * 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.flume.sink.hdfs;

import org.apache.flume.Event;
import org.apache.hadoop.io.SequenceFile.CompressionType;
import org.apache.hadoop.io.compress.CompressionCodec;

import java.io.IOException;

public class HDFSTestSeqWriter extends HDFSSequenceFile {
  protected volatile boolean closed;
  protected volatile boolean opened;

  private int openCount = 0;

  HDFSTestSeqWriter(int openCount) {
    this.openCount = openCount;
  }

  @Override
  public void open(String filePath, CompressionCodec codeC, CompressionType compType)
      throws IOException {
    super.open(filePath, codeC, compType);
    if (closed) {
      opened = true;
    }
  }

  @Override
  public void append(Event e) throws IOException {

    if (e.getHeaders().containsKey("fault")) {
      throw new IOException("Injected fault");
    } else if (e.getHeaders().containsKey("fault-once")) {
      e.getHeaders().remove("fault-once");
      throw new IOException("Injected fault");
    } else if (e.getHeaders().containsKey("fault-until-reopen")) {
      // opening first time.
      if (openCount == 1) {
        throw new IOException("Injected fault-until-reopen");
      }
    } else if (e.getHeaders().containsKey("slow")) {
      long waitTime = Long.parseLong(e.getHeaders().get("slow"));
      try {
        Thread.sleep(waitTime);
      } catch (InterruptedException eT) {
        throw new IOException("append interrupted", eT);
      }
    }

    super.append(e);
  }

  @Override
  public void close() throws IOException {
    closed = true;
    super.close();
  }
}
