exec/java-exec/src/main/java/org/apache/drill/exec/work/fragment/RootFragmentManager.java


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88

/**
 * 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.drill.exec.work.fragment;

import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;

import org.apache.drill.exec.exception.FragmentSetupException;
import org.apache.drill.exec.ops.FragmentContext;
import org.apache.drill.exec.proto.ExecProtos.FragmentHandle;
import org.apache.drill.exec.record.RawFragmentBatch;
import org.apache.drill.exec.rpc.RemoteConnection;
import org.apache.drill.exec.rpc.ResponseSender;
import org.apache.drill.exec.work.batch.IncomingBuffers;

public class RootFragmentManager implements FragmentManager{
  static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(RootFragmentManager.class);

  private final IncomingBuffers buffers;
  private final FragmentExecutor runner;
  private final FragmentHandle handle;
  private volatile boolean cancel = false;
  private List<RemoteConnection> connections = new CopyOnWriteArrayList<>();

  public RootFragmentManager(FragmentHandle handle, IncomingBuffers buffers, FragmentExecutor runner) {
    super();
    this.handle = handle;
    this.buffers = buffers;
    this.runner = runner;
  }

  @Override
  public boolean handle(RawFragmentBatch batch) throws FragmentSetupException {
    return buffers.batchArrived(batch);
  }

  @Override
  public FragmentExecutor getRunnable() {
    return runner;
  }

  public FragmentHandle getHandle() {
    return handle;
  }

  @Override
  public void cancel() {
    cancel = true;
  }

  @Override
  public boolean isWaiting() {
    return !buffers.isDone() && !cancel;
  }

  @Override
  public FragmentContext getFragmentContext() {
    return runner.getContext();
  }

  @Override
  public void addConnection(RemoteConnection connection) {
    connections.add(connection);
  }

  @Override
  public void setAutoRead(boolean autoRead) {
    for (RemoteConnection c : connections) {
      c.setAutoRead(autoRead);
    }
  }

}