2 Copyright (c) 2004-2009, John Hurst
5 Redistribution and use in source and binary forms, with or without
6 modification, are permitted provided that the following conditions
8 1. Redistributions of source code must retain the above copyright
9 notice, this list of conditions and the following disclaimer.
10 2. Redistributions in binary form must reproduce the above copyright
11 notice, this list of conditions and the following disclaimer in the
12 documentation and/or other materials provided with the distribution.
13 3. The name of the author may not be used to endorse or promote products
14 derived from this software without specific prior written permission.
16 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 \brief message logging API
35 #include <sys/types.h>
42 #define getpid GetCurrentProcessId
47 //------------------------------------------------------------------------------------------
51 Kumu::ILogSink::vLogf(LogType_t type, const char* fmt, va_list* list)
53 char buf[MaxLogLength];
54 vsnprintf(buf, MaxLogLength, fmt, *list);
56 WriteEntry(LogEntry(getpid(), type, buf));
59 //------------------------------------------------------------------------------------------
62 static Kumu::Mutex s_DefaultLogSinkLock;
63 static Kumu::ILogSink* s_DefaultLogSink = 0;
64 static Kumu::StdioLogSink s_StderrLogSink;
68 Kumu::SetDefaultLogSink(ILogSink* Sink)
70 AutoMutex L(s_DefaultLogSinkLock);
71 s_DefaultLogSink = Sink;
74 // Returns the internal default sink.
76 Kumu::DefaultLogSink()
78 AutoMutex L(s_DefaultLogSinkLock);
80 if ( s_DefaultLogSink == 0 )
81 s_DefaultLogSink = &s_StderrLogSink;
83 return *s_DefaultLogSink;
87 //------------------------------------------------------------------------------------------
91 Kumu::EntryListLogSink::WriteEntry(const LogEntry& Entry)
95 if ( Entry.TestFilter(m_filter) )
96 m_Target.push_back(Entry);
99 //------------------------------------------------------------------------------------------
103 Kumu::StdioLogSink::WriteEntry(const LogEntry& Entry)
108 if ( Entry.TestFilter(m_filter) )
110 Entry.CreateStringWithOptions(buf, m_options);
111 fputs(buf.c_str(), m_stream);
115 //---------------------------------------------------------------------------------
119 // http://www.codeguru.com/forum/showthread.php?t=231165
122 Kumu::WinDbgLogSink::WriteEntry(const LogEntry& Entry)
127 if ( Entry.TestFilter(m_filter) )
129 Entry.CreateStringWithOptions(buf, m_options);
130 int lenW = ::MultiByteToWideChar(CP_ACP, 0, buf.c_str(), buf.size(), 0, 0);
134 // Check whether conversion was successful
135 BSTR unicodestr = ::SysAllocStringLen(0, lenW);
136 ::MultiByteToWideChar(CP_ACP, 0, buf.c_str(), buf.size(), unicodestr, lenW);
137 ::OutputDebugString(unicodestr);
138 ::SysFreeString(unicodestr);
142 ::OutputDebugString(L("MultiByteToWideChar failed, log sink output discarded.\n"));
148 //------------------------------------------------------------------------------------------
154 Kumu::StreamLogSink::WriteEntry(const LogEntry& Entry)
159 if ( Entry.TestFilter(m_filter) )
161 Entry.CreateStringWithOptions(buf, m_options);
162 write(m_fd, buf.c_str(), buf.size());
166 // foolin with symbols
167 //------------------------------------------------------------------------------------------
169 int const SYSLOG_ALERT = LOG_ALERT;
170 int const SYSLOG_CRIT = LOG_CRIT;
171 int const SYSLOG_ERR = LOG_ERR;
172 int const SYSLOG_WARNING = LOG_WARNING;
173 int const SYSLOG_NOTICE = LOG_NOTICE;
174 int const SYSLOG_INFO = LOG_INFO;
175 int const SYSLOG_DEBUG = LOG_DEBUG;
183 //------------------------------------------------------------------------------------------
185 Kumu::SyslogLogSink::SyslogLogSink(const std::string& source_name, int facility)
188 facility = LOG_DAEMON;
190 openlog(source_name.c_str(), LOG_CONS|LOG_NDELAY||LOG_PID, facility);
193 Kumu::SyslogLogSink::~SyslogLogSink()
200 Kumu::SyslogLogSink::WriteEntry(const LogEntry& Entry)
204 switch ( Entry.Type )
206 case Kumu::LOG_ALERT: priority = SYSLOG_ALERT; break;
207 case Kumu::LOG_CRIT: priority = SYSLOG_CRIT; break;
208 case Kumu::LOG_ERROR: priority = SYSLOG_ERR; break;
209 case Kumu::LOG_WARN: priority = SYSLOG_WARNING; break;
210 case Kumu::LOG_NOTICE: priority = SYSLOG_NOTICE; break;
211 case Kumu::LOG_INFO: priority = SYSLOG_INFO; break;
212 case Kumu::LOG_DEBUG: priority = SYSLOG_DEBUG; break;
217 if ( Entry.TestFilter(m_filter) )
219 syslog(priority, "%s", Entry.Msg.substr(0, Entry.Msg.size() - 1).c_str());
225 Kumu::SyslogNameToFacility(const std::string& facility_name)
227 if ( facility_name == "LOG_DAEMON" ) return LOG_DAEMON;
228 if ( facility_name == "LOG_LOCAL0" ) return LOG_LOCAL0;
229 if ( facility_name == "LOG_LOCAL1" ) return LOG_LOCAL1;
230 if ( facility_name == "LOG_LOCAL2" ) return LOG_LOCAL2;
231 if ( facility_name == "LOG_LOCAL3" ) return LOG_LOCAL3;
232 if ( facility_name == "LOG_LOCAL4" ) return LOG_LOCAL4;
233 if ( facility_name == "LOG_LOCAL5" ) return LOG_LOCAL5;
234 if ( facility_name == "LOG_LOCAL6" ) return LOG_LOCAL6;
235 if ( facility_name == "LOG_LOCAL7" ) return LOG_LOCAL7;
237 DefaultLogSink().Error("Unsupported facility name: %s, using default value LOG_DAEMON\n", facility_name.c_str());
243 //------------------------------------------------------------------------------------------
246 std::basic_ostream<char, std::char_traits<char> >&
247 Kumu::operator<<(std::basic_ostream<char, std::char_traits<char> >& strm, LogEntry const& Entry)
249 std::basic_ostringstream<char, std::char_traits<char> > s;
254 s << Entry.CreateStringWithOptions(buf, LOG_OPTION_ALL);
260 //------------------------------------------------------------------------------------------
265 Kumu::LogEntry::TestFilter(i32_t filter) const
270 if ( (filter & LOG_ALLOW_CRIT) == 0 )
275 if ( (filter & LOG_ALLOW_ALERT) == 0 )
280 if ( (filter & LOG_ALLOW_NOTICE) == 0 )
285 if ( (filter & LOG_ALLOW_ERROR) == 0 )
290 if ( (filter & LOG_ALLOW_WARN) == 0 )
295 if ( (filter & LOG_ALLOW_INFO) == 0 )
300 if ( (filter & LOG_ALLOW_DEBUG) == 0 )
311 Kumu::LogEntry::CreateStringWithOptions(std::string& out_buf, i32_t opt) const
319 if ( (opt & LOG_OPTION_TIMESTAMP) != 0 )
322 out_buf += Now.EncodeString(buf, 64);
325 if ( (opt & LOG_OPTION_PID) != 0 )
327 if ( ! out_buf.empty() ) out_buf += " ";
328 snprintf(buf, 64, "%d", PID);
332 if ( (opt & LOG_OPTION_TYPE) != 0 )
334 if ( ! out_buf.empty() ) out_buf += " ";
338 case LOG_CRIT: out_buf += "CRT"; break;
339 case LOG_ALERT: out_buf += "ALR"; break;
340 case LOG_NOTICE: out_buf += "NTC"; break;
341 case LOG_ERROR: out_buf += "ERR"; break;
342 case LOG_WARN: out_buf += "WRN"; break;
343 case LOG_INFO: out_buf += "INF"; break;
344 case LOG_DEBUG: out_buf += "DBG"; break;
345 default: out_buf += "DFL"; break;
349 out_buf.insert(0, "[");
360 Kumu::LogEntry::ArchiveLength() const
362 return sizeof(ui32_t)
363 + EventTime.ArchiveLength()
365 + sizeof(ui32_t) + Msg.size();
370 Kumu::LogEntry::Archive(Kumu::MemIOWriter* Writer) const
372 if ( ! Writer->WriteUi32BE(PID) ) return false;
373 if ( ! EventTime.Archive(Writer) ) return false;
374 if ( ! Writer->WriteUi32BE(Type) ) return false;
375 if ( ! ArchiveString(*Writer, Msg) ) return false;
381 Kumu::LogEntry::Unarchive(Kumu::MemIOReader* Reader)
383 if ( ! Reader->ReadUi32BE(&PID) ) return false;
384 if ( ! EventTime.Unarchive(Reader) ) return false;
385 if ( ! Reader->ReadUi32BE((ui32_t*)&Type) ) return false;
386 if ( ! UnarchiveString(*Reader, Msg) ) return false;