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
|
// Copyright (C) 2011-2015 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#include <config.h>
#include <string>
#include <log/logger_support.h>
#include <log/logger_manager.h>
#include <log/logger_name.h>
using namespace std;
namespace {
// Flag to hold logging initialization state.
bool logging_init_state = false;
} // Anonymous namespace
namespace isc {
namespace log {
// Return initialization state.
bool
isLoggingInitialized() {
return (logging_init_state);
}
// Set initialization state. (Note: as logging can be initialized via a direct
// call to LoggerManager::init(), this function is called from there, not from
// the initialization functions in this file.
void
setLoggingInitialized(bool state) {
logging_init_state = state;
}
// Logger Run-Time Initialization.
void
initLogger(const string& root, isc::log::Severity severity, int dbglevel,
const char* file, bool buffer) {
LoggerManager::init(root, severity, dbglevel, file, buffer);
}
// Reset characteristics of the root logger to that set by the environment
// variables KEA_LOGGER_SEVERITY, KEA_LOGGER_DBGLEVEL and KEA_LOGGER_DESTINATION.
void
setDefaultLoggingOutput(bool verbose) {
using namespace isc::log;
// Constants: not declared static as this is function is expected to be
// called once only
const string DEVNULL = "/dev/null";
const string STDOUT = "stdout";
const string STDERR = "stderr";
const string SYSLOG = "syslog";
const string SYSLOG_COLON = "syslog:";
// Get the destination. If not specified, assume /dev/null. (The default
// severity for unit tests is DEBUG, which generates a lot of output.
// Routing the logging to /dev/null will suppress that, whilst still
// ensuring that the code paths are tested.)
const char* destination = getenv("KEA_LOGGER_DESTINATION");
const string dest((destination == NULL) ? DEVNULL : destination);
// Prepare the objects to define the logging specification
LoggerSpecification spec(getRootLoggerName(),
keaLoggerSeverity(verbose ? isc::log::DEBUG :
isc::log::INFO),
keaLoggerDbglevel(isc::log::MAX_DEBUG_LEVEL));
OutputOption option;
// Set up output option according to destination specification
if (dest == STDOUT) {
option.destination = OutputOption::DEST_CONSOLE;
option.stream = OutputOption::STR_STDOUT;
} else if (dest == STDERR) {
option.destination = OutputOption::DEST_CONSOLE;
option.stream = OutputOption::STR_STDERR;
} else if (dest == SYSLOG) {
option.destination = OutputOption::DEST_SYSLOG;
// Use default specified in OutputOption constructor for the
// syslog destination
} else if (dest.find(SYSLOG_COLON) == 0) {
option.destination = OutputOption::DEST_SYSLOG;
// Must take account of the string actually being "syslog:"
if (dest == SYSLOG_COLON) {
cerr << "**ERROR** value for KEA_LOGGER_DESTINATION of " <<
SYSLOG_COLON << " is invalid, " << SYSLOG <<
" will be used instead\n";
// Use default for logging facility
} else {
// Everything else in the string is the facility name
option.facility = dest.substr(SYSLOG_COLON.size());
}
} else {
// Not a recognized destination, assume a file.
option.destination = OutputOption::DEST_FILE;
option.filename = dest;
}
// ... and set the destination
spec.addOutputOption(option);
LoggerManager manager;
manager.process(spec);
}
} // namespace log
} // namespace isc
|
