From 3b38c04209ba45e19df62f4f89aa2d20c04846d4 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Mon, 5 Aug 2019 20:15:03 +0100
Subject: Add syslog log writer

---
 icetray/icetray/logWriterSyslog.cpp     | 35 +++++++++++++++++++++++++++++++++
 icetray/icetray/logWriterSyslog.h       | 21 ++++++++++++++++++++
 icetray/unittests/testIceTrayLogger.cpp |  7 +++++++
 3 files changed, 63 insertions(+)
 create mode 100644 icetray/icetray/logWriterSyslog.cpp
 create mode 100644 icetray/icetray/logWriterSyslog.h

diff --git a/icetray/icetray/logWriterSyslog.cpp b/icetray/icetray/logWriterSyslog.cpp
new file mode 100644
index 0000000..d78da5b
--- /dev/null
+++ b/icetray/icetray/logWriterSyslog.cpp
@@ -0,0 +1,35 @@
+#include <logWriter.h>
+#include "logWriterSyslog.h"
+#include <syslog.h>
+
+// NOLINTNEXTLINE(modernize-concat-nested-namespaces)
+namespace IceTray {
+	namespace Logging {
+		AdHocFormatter(LogMsg, "%D: %?");
+		SyslogLogWriter::SyslogLogWriter(const Ice::PropertiesPtr & p) :
+			AbstractLogWriter("logging.syslog", p),
+			width(p ? p->getPropertyAsIntWithDefault("logging.syslog.width", -1) : -1)
+			{
+				if (p) {
+					openlog(
+							p->getPropertyWithDefault("logging.syslog.ident", "icetray").c_str(),
+							p->getPropertyAsIntWithDefault("logging.syslog.option", 0),
+							p->getPropertyAsIntWithDefault("logging.syslog.facility", LOG_DAEMON));
+				}
+			}
+
+		SyslogLogWriter::~SyslogLogWriter()
+		{
+			closelog();
+		}
+
+		void
+		SyslogLogWriter::message(LogLevel priority, Domain domain, const std::string_view message, const Ice::Current &)
+		{
+			syslog((int)priority, "%s", LogMsg::get(width, domain, message).c_str());
+		}
+
+		FACTORY(SyslogLogWriter, LogWriterFactory);
+	}
+}
+
diff --git a/icetray/icetray/logWriterSyslog.h b/icetray/icetray/logWriterSyslog.h
new file mode 100644
index 0000000..fdce2ec
--- /dev/null
+++ b/icetray/icetray/logWriterSyslog.h
@@ -0,0 +1,21 @@
+#ifndef ICETRAY_LOGGING_SYSLOG_H
+#define ICETRAY_LOGGING_SYSLOG_H
+
+#include "logger.h"
+
+namespace IceTray {
+	namespace Logging {
+		class SyslogLogWriter : public AbstractLogWriter {
+			public:
+				SyslogLogWriter(const Ice::PropertiesPtr & p);
+				~SyslogLogWriter();
+
+				void message(LogLevel priority, Domain domain, std::string_view message, const Ice::Current &) override;
+
+				const int width;
+		};
+	}
+}
+
+#endif
+
diff --git a/icetray/unittests/testIceTrayLogger.cpp b/icetray/unittests/testIceTrayLogger.cpp
index 0998143..73142a4 100644
--- a/icetray/unittests/testIceTrayLogger.cpp
+++ b/icetray/unittests/testIceTrayLogger.cpp
@@ -328,6 +328,13 @@ BOOST_AUTO_TEST_CASE( getLoggerForType )
 
 BOOST_AUTO_TEST_SUITE_END();
 
+BOOST_AUTO_TEST_CASE( syslog )
+{
+	IceTray::Logging::LogWriterPtr lwp =
+		IceTray::Logging::LogWriterFactory::createNew("SyslogLogWriter", nullptr);
+	lwp->message(LogLevel::DEBUG, testDomain, "some message", {});
+}
+
 BOOST_AUTO_TEST_CASE( console )
 {
 	IceTray::Logging::LogWriterPtr lwp =
-- 
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