NS-3 based Named Data Networking (NDN) simulator
ndnSIM 2.3: NDN, CCN, CCNx, content centric networks
API Documentation
syslog.hpp
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1 /*
2  * Copyright (c) 2014, Peter Thorson. All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions are met:
6  * * Redistributions of source code must retain the above copyright
7  * notice, this list of conditions and the following disclaimer.
8  * * Redistributions in binary form must reproduce the above copyright
9  * notice, this list of conditions and the following disclaimer in the
10  * documentation and/or other materials provided with the distribution.
11  * * Neither the name of the WebSocket++ Project nor the
12  * names of its contributors may be used to endorse or promote products
13  * derived from this software without specific prior written permission.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18  * ARE DISCLAIMED. IN NO EVENT SHALL PETER THORSON BE LIABLE FOR ANY
19  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
20  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
21  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
22  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
24  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25  *
26  *
27  * The initial version of this logging policy was contributed to the WebSocket++
28  * project by Tom Hughes.
29  */
30 
31 #ifndef WEBSOCKETPP_LOGGER_SYSLOG_HPP
32 #define WEBSOCKETPP_LOGGER_SYSLOG_HPP
33 
34 #include <syslog.h>
35 
37 
40 
41 namespace websocketpp {
42 namespace log {
43 
45 template <typename concurrency, typename names>
46 class syslog : public basic<concurrency, names> {
47 public:
49 
51 
56  : basic<concurrency,names>(hint), m_channel_type_hint(hint) {}
57 
59 
65  : basic<concurrency,names>(channels, hint), m_channel_type_hint(hint) {}
66 
68 
72  void write(level channel, std::string const & msg) {
73  write(channel, msg.c_str());
74  }
75 
77 
81  void write(level channel, char const * msg) {
83  if (!this->dynamic_test(channel)) { return; }
84  ::syslog(syslog_priority(channel), "[%s] %s",
85  names::channel_name(channel), msg);
86  }
87 private:
89 
92  static int const default_level = LOG_INFO;
93 
95 
99  int syslog_priority(level channel) const {
100  if (m_channel_type_hint == channel_type_hint::access) {
101  return syslog_priority_access(channel);
102  } else {
103  return syslog_priority_error(channel);
104  }
105  }
106 
108 
112  int syslog_priority_error(level channel) const {
113  switch (channel) {
114  case elevel::devel:
115  return LOG_DEBUG;
116  case elevel::library:
117  return LOG_DEBUG;
118  case elevel::info:
119  return LOG_INFO;
120  case elevel::warn:
121  return LOG_WARNING;
122  case elevel::rerror:
123  return LOG_ERR;
124  case elevel::fatal:
125  return LOG_CRIT;
126  default:
127  return default_level;
128  }
129  }
130 
132 
136  _WEBSOCKETPP_CONSTEXPR_TOKEN_ int syslog_priority_access(level) const {
137  return default_level;
138  }
139 
140  channel_type_hint::value m_channel_type_hint;
141 };
142 
143 } // log
144 } // websocketpp
145 
146 #endif // WEBSOCKETPP_LOGGER_SYSLOG_HPP
static level const fatal
Unrecoverable error.
Definition: levels.hpp:78
bool dynamic_test(level channel)
Definition: basic.hpp:164
uint32_t value
Type of a channel type hint value.
Definition: levels.hpp:48
static value const access
Access log.
Definition: levels.hpp:53
static level const devel
Low level debugging information (warning: very chatty)
Definition: levels.hpp:63
void write(level channel, char const *msg)
Write a cstring message to the given channel.
Definition: syslog.hpp:81
concurrency::scoped_lock_type scoped_lock_type
Definition: basic.hpp:169
basic< concurrency, names > base
Definition: syslog.hpp:48
syslog(channel_type_hint::value hint=channel_type_hint::access)
Construct the logger.
Definition: syslog.hpp:54
Basic logger that outputs to syslog.
Definition: syslog.hpp:46
#define _WEBSOCKETPP_CONSTEXPR_TOKEN_
Definition: cpp11.hpp:132
Basic logger that outputs to an ostream.
Definition: basic.hpp:59
void write(level channel, std::string const &msg)
Write a string message to the given channel.
Definition: syslog.hpp:72
static level const info
Information about minor configuration problems or additional information about other warnings...
Definition: levels.hpp:69
Namespace for the WebSocket++ project.
Definition: base64.hpp:41
uint32_t level
Type of a channel package.
Definition: levels.hpp:37
static level const library
Information about unusual system states or other minor internal library problems, less chatty than de...
Definition: levels.hpp:66
static level const rerror
Recoverable error.
Definition: levels.hpp:75
static level const warn
Information about important problems not severe enough to terminate connections.
Definition: levels.hpp:72