1 files changed, 119 insertions, 0 deletions
diff --git a/src/lib/log/logger_support.cc b/src/lib/log/logger_support.cc
new file mode 100644
index 0000000..9431edd
--- /dev/null
+++ b/src/lib/log/logger_support.cc
@@ -0,0 +1,119 @@
+// 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