blob: 2d8c6f417e1756f6bd14e862126ded510f3d6462 (
plain)
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
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
/*-
* ============LICENSE_START=======================================================
* ONAP : APPC
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Copyright (C) 2017 Amdocs
* =============================================================================
* 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.
*
* ECOMP is a trademark and service mark of AT&T Intellectual Property.
* ============LICENSE_END=========================================================
*/
package org.onap.appc.adapter.netconf.internal;
import org.onap.appc.configuration.ConfigurationFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.concurrent.*;
/**
* Provides basic methods for exchanging netconf messages.
*/
public class NetconfAdapter {
private static final Logger LOG = LoggerFactory.getLogger(NetconfAdapter.class);
private static final long MAX_WAITING_TIME = 1800000;
private static ExecutorService executor = Executors.newFixedThreadPool(5);
// device input stream
private InputStream in;
// device output stream
private OutputStream out;
private long maxWaitingTime = ConfigurationFactory.getConfiguration().getLongProperty("org.onap.appc.netconf.recv.timeout", MAX_WAITING_TIME);
/**
* Constructor.
*
* @param in InputStream this instance will read netconf messages from
* @param out OutputStream this instance will write netconf messages to
* @throws IOException
*/
public NetconfAdapter(InputStream in, OutputStream out) throws IOException {
this.in = in;
this.out = out;
}
/**
* Receives netconf message from InputStream and return it's text (without netconf frame characters).
*
* @return text of message received from netconf device
* @throws IOException
*/
public String receiveMessage() throws IOException {
final NetconfMessage message = new NetconfMessage();
final byte[] buf = new byte[1024];
//int readByte = 1;
// Read data with timeout
Callable<Boolean> readTask = new Callable<Boolean>() {
@Override
public Boolean call() throws Exception {
int c;
while ((c = in.read(buf)) > 0) {
if (c > 0) {
message.append(buf, 0, c);
if (message.isCompleted()) {
break;
}
}
}
if (c < 0) {
return false;
}
return true;
}
};
Future<Boolean> future = executor.submit(readTask);
Boolean status;
try {
status = future.get(maxWaitingTime, TimeUnit.MILLISECONDS);
} catch (Exception e) {
throw new IOException(e);
}
if (status == false) {
throw new IOException("Failed to read netconf message");
}
String text = message.getText();
if (text != null) {
text = text.trim();
}
if (LOG.isDebugEnabled()) {
LOG.debug("Received message from netconf device:\n" + text);
}
return text;
}
/**
* Sends netconf message with provided text (adds netconf frame characters and sends the message).
*
* @param text text of message to be sent to netconf device
* @throws IOException
*/
public void sendMessage(final String text) throws IOException {
if (LOG.isDebugEnabled()) {
LOG.debug("Sending message to netconf device:\n" + text);
}
out.write(new NetconfMessage(text).getFrame());
out.flush();
}
}
|
