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
|
/*
* Copyright (c) 2004 - 2012 Eike Stepper (Berlin, Germany) and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Eike Stepper - initial API and implementation
*/
package org.eclipse.net4j.signal;
import org.eclipse.net4j.util.io.ExtendedDataOutputStream;
import org.eclipse.net4j.util.io.ExtendedIOUtil;
import org.eclipse.net4j.util.om.trace.ContextTracer;
import org.eclipse.internal.net4j.bundle.OM;
import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
/**
* @author Eike Stepper
*/
class RemoteExceptionRequest extends Request
{
private static final ContextTracer TRACER = new ContextTracer(OM.DEBUG_SIGNAL, RemoteExceptionRequest.class);
private int correlationID;
private boolean responding;
private String message;
private Throwable t;
public RemoteExceptionRequest(SignalProtocol<?> protocol, int correlationID, boolean responding, String message,
Throwable t)
{
super(protocol, SignalProtocol.SIGNAL_REMOTE_EXCEPTION);
this.correlationID = correlationID;
this.message = message;
this.t = t;
this.responding = responding;
}
@Override
protected void requesting(ExtendedDataOutputStream out) throws Exception
{
if (TRACER.isEnabled())
{
String msg = getFirstLine(message);
TRACER.format("Writing remote exception for signal {0}: {1}", correlationID, msg); //$NON-NLS-1$
}
out.writeInt(correlationID);
out.writeBoolean(responding);
out.writeString(message);
out.writeByteArray(serializeThrowable(t));
}
public static byte[] serializeThrowable(Throwable t)
{
try
{
ByteArrayOutputStream baos = new ByteArrayOutputStream();
DataOutputStream dos = new DataOutputStream(baos);
ExtendedIOUtil.writeObject(dos, t);
return baos.toByteArray();
}
catch (Exception ex)
{
return null;
}
}
public static String getFirstLine(String message)
{
if (message == null)
{
return null;
}
int nl = message.indexOf('\n');
if (nl == -1)
{
nl = message.length();
}
if (nl > 100)
{
nl = 100;
}
return message.substring(0, nl);
}
}
|