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
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
#ifndef _Exception_
#define _Exception_
/*
*
* 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.
*
*/
#include "framing/amqp_types.h"
#include <exception>
#include <string>
#include <memory>
#include <boost/shared_ptr.hpp>
#include <boost/lexical_cast.hpp>
#include <boost/function.hpp>
namespace qpid
{
/** Get the error message for error number err. */
std::string strError(int err);
/**
* Exception base class for all Qpid exceptions.
*/
class Exception : public std::exception
{
protected:
std::string whatStr;
public:
typedef boost::shared_ptr<Exception> shared_ptr;
typedef boost::shared_ptr<const Exception> shared_ptr_const;
typedef std::auto_ptr<Exception> auto_ptr;
Exception() throw();
Exception(const std::string& str) throw();
Exception(const char* str) throw();
Exception(const std::exception&) throw();
/** Allow any type that has ostream operator<< to act as message */
template <class T>
Exception(const T& message)
: whatStr(boost::lexical_cast<std::string>(message)) {}
virtual ~Exception() throw();
virtual const char* what() const throw();
virtual std::string toString() const throw();
virtual auto_ptr clone() const throw();
virtual void throwSelf() const;
/** Default message: "Unknown exception" or something like it. */
static const char* defaultMessage;
/**
* Log a message of the form "message: what"
*@param what Exception's what() message.
*@param message Prefix message.
*/
static void log(const char* what, const char* message = defaultMessage);
/**
* Log an exception.
*@param e Exception to log.
*/
static void log(
const std::exception& e, const char* message = defaultMessage);
/**
* Log an unknown exception - use in catch(...)
*@param message Prefix message.
*/
static void logUnknown(const char* message = defaultMessage);
/**
* Wrapper template function to call another function inside
* try/catch and log any exception. Use boost::bind to wrap
* member function calls or functions with arguments.
*
*@param f Function to call in try block.
*@param retrhow If true the exception is rethrown.
*@param message Prefix message.
*/
template <class T>
static T tryCatchLog(boost::function0<T> f, bool rethrow=true,
const char* message=defaultMessage)
{
try {
return f();
}
catch (const std::exception& e) {
log(e, message);
if (rethrow)
throw;
}
catch (...) {
logUnknown(message);
if (rethrow)
throw;
}
}
};
struct ChannelException : public Exception {
framing::ReplyCode code;
template <class T>
ChannelException(framing::ReplyCode code_, const T& message)
: Exception(message), code(code_) {}
void throwSelf() const { throw *this; }
};
struct ConnectionException : public Exception {
framing::ReplyCode code;
template <class T>
ConnectionException(framing::ReplyCode code_, const T& message)
: Exception(message), code(code_) {}
void throwSelf() const { throw *this; }
};
/**
* Exception used to indicate that a thread should shut down.
* Does not indicate an error that should be signalled to the user.
*/
struct ShutdownException : public Exception {
ShutdownException();
void throwSelf() const { throw *this; }
};
/** Exception to indicate empty queue or other empty state */
struct EmptyException : public Exception {
EmptyException();
void throwSelf() const { throw *this; }
};
}
#endif /*!_Exception_*/
|
