core: Initial implementation for run-time selection of log level
Log level can be controlled using NFD_LOG environment variable. The
following options are available
Set up log level using mnemonic
NFD_LOG=none|error|warn|info|debug|trace
Set up log level using log-level number (0 none, >=5 all)
NFD_LOG=0|1|2|3|4|5|6|...
Change-Id: Id38c2775f1137a4e38e4896963ab9a01fc863d2c
Refs: #1267
diff --git a/daemon/core/logger.cpp b/daemon/core/logger.cpp
index 14dd380..928b112 100644
--- a/daemon/core/logger.cpp
+++ b/daemon/core/logger.cpp
@@ -7,14 +7,69 @@
*/
#include "logger.hpp"
+#include <boost/algorithm/string.hpp>
-namespace nfd
+namespace nfd {
+
+inline static bool
+isNumber(const std::string& s)
{
+ if (s.empty())
+ return false;
+
+ for (std::string::const_iterator i = s.begin(); i != s.end(); ++i)
+ {
+ if (!std::isdigit(*i))
+ return false;
+ }
+
+ return true;
+}
Logger::Logger(const std::string& name)
- : m_moduleName(name),
- m_isEnabled(true)
+ : m_moduleName(name)
{
+ char* nfdLog = getenv("NFD_LOG");
+ if (nfdLog)
+ {
+ std::string level = nfdLog;
+ if (isNumber(nfdLog))
+ {
+ setLogLevel(boost::lexical_cast<uint32_t>(nfdLog));
+ }
+ else if (boost::iequals(level, "none"))
+ {
+ m_enabledLogLevel = LOG_NONE;
+ }
+ else if (boost::iequals(level, "error"))
+ {
+ m_enabledLogLevel = LOG_ERROR;
+ }
+ else if (boost::iequals(level, "warn"))
+ {
+ m_enabledLogLevel = LOG_WARN;
+ }
+ else if (boost::iequals(level, "info"))
+ {
+ m_enabledLogLevel = LOG_INFO;
+ }
+ else if (boost::iequals(level, "debug"))
+ {
+ m_enabledLogLevel = LOG_DEBUG;
+ }
+ else if (boost::iequals(level, "trace"))
+ {
+ m_enabledLogLevel = LOG_TRACE;
+ }
+ else
+ {
+ m_enabledLogLevel = LOG_ALL;
+ }
+ }
+ else
+ {
+ m_enabledLogLevel = LOG_WARN;
+ }
}
std::ostream&