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
|
/*
* Copyright 2016 Anton Tananaev (anton.tananaev@gmail.com)
*
* 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.traccar.protocol;
import org.jboss.netty.buffer.ChannelBuffer;
import org.jboss.netty.buffer.ChannelBuffers;
import org.traccar.BaseProtocolEncoder;
import org.traccar.helper.Log;
import org.traccar.model.Command;
import java.nio.ByteOrder;
import java.nio.charset.Charset;
public class NoranProtocolEncoder extends BaseProtocolEncoder {
private ChannelBuffer encodeContent(String content) {
ChannelBuffer buf = ChannelBuffers.buffer(ByteOrder.LITTLE_ENDIAN, 12 + 56);
buf.writeBytes(
ChannelBuffers.copiedBuffer(ByteOrder.LITTLE_ENDIAN, "\r\n*KW", Charset.defaultCharset()));
buf.writeByte(0);
buf.writeShort(buf.capacity());
buf.writeShort(NoranProtocolDecoder.MSG_CONTROL);
buf.writeInt(0); // gis ip
buf.writeShort(0); // gis port
buf.writeBytes(content.getBytes(Charset.defaultCharset()));
buf.writerIndex(buf.writerIndex() + 50 - content.length());
buf.writeBytes(
ChannelBuffers.copiedBuffer(ByteOrder.LITTLE_ENDIAN, "\r\n", Charset.defaultCharset()));
return buf;
}
@Override
protected Object encodeCommand(Command command) {
switch (command.getType()) {
case Command.TYPE_POSITION_SINGLE:
return encodeContent("*KW,000,000,000000#");
case Command.TYPE_POSITION_PERIODIC:
int interval = ((Number) command.getAttributes().get(Command.KEY_FREQUENCY)).intValue();
return encodeContent("*KW,000,002,000000," + interval + "#");
case Command.TYPE_POSITION_STOP:
return encodeContent("*KW,000,002,000000,0#");
case Command.TYPE_ENGINE_STOP:
return encodeContent("*KW,000,007,000000,0#");
case Command.TYPE_ENGINE_RESUME:
return encodeContent("*KW,000,007,000000,1#");
default:
Log.warning(new UnsupportedOperationException(command.getType()));
break;
}
return null;
}
}
|
