From 5edb540785dbb4f4699e9cbd676c7dce44986647 Mon Sep 17 00:00:00 2001
From: randomdan <randomdan@localhost>
Date: Sat, 7 Sep 2013 13:49:14 +0000
Subject: Add signal handler to p2daemon

---
 project2/daemon/lib/daemon.h          |  3 ++-
 project2/daemon/p2daemonAppEngine.cpp | 30 +++++++++++++++++++++++++++---
 project2/daemon/p2daemonAppEngine.h   |  3 ++-
 3 files changed, 31 insertions(+), 5 deletions(-)

diff --git a/project2/daemon/lib/daemon.h b/project2/daemon/lib/daemon.h
index 106d3f4..ca57b5d 100644
--- a/project2/daemon/lib/daemon.h
+++ b/project2/daemon/lib/daemon.h
@@ -10,7 +10,8 @@ class Daemon : public IntrusivePtrBase {
 		Daemon();
 		virtual ~Daemon();
 
-		virtual void process() const = 0;
+		virtual void run() const = 0;
+		virtual void shutdown() const = 0;
 };
 
 typedef boost::intrusive_ptr<Daemon> DaemonPtr;
diff --git a/project2/daemon/p2daemonAppEngine.cpp b/project2/daemon/p2daemonAppEngine.cpp
index 62bcff7..d00cd1d 100644
--- a/project2/daemon/p2daemonAppEngine.cpp
+++ b/project2/daemon/p2daemonAppEngine.cpp
@@ -5,6 +5,7 @@
 std::string DaemonAppEngine::daemonType;
 boost::optional<std::string> DaemonAppEngine::libraryPath;
 Glib::ustring DaemonAppEngine::reqPlatform;
+DaemonPtr DaemonAppEngine::daemon;
 
 DECLARE_OPTIONS(DaemonAppEngine, "Project2 Daemon options")
 ("daemon.type", Options::value(&daemonType), "The core daemon module to run")
@@ -13,16 +14,38 @@ DECLARE_OPTIONS(DaemonAppEngine, "Project2 Daemon options")
 END_OPTIONS(DaemonAppEngine);
 
 DaemonAppEngine::DaemonAppEngine(int argc, char ** argv) :
-	library(!!libraryPath ? loadLibrary(*libraryPath) : boost::shared_ptr<void>()),
-	daemon(DaemonLoader::createNew(daemonType, argc, argv))
+	library(!!libraryPath ? loadLibrary(*libraryPath) : boost::shared_ptr<void>())
 {
+	daemon = DaemonLoader::createNew(daemonType, argc, argv);
+}
+
+void
+DaemonAppEngine::shutdown(int)
+{
+	if (signal(SIGINT, SIG_DFL) == SIG_ERR) {
+		Logger()->message(LOG_WARNING, "Failed to remove signal handler");
+	}
+	if (signal(SIGTERM, SIG_DFL) == SIG_ERR) {
+		Logger()->message(LOG_WARNING, "Failed to remove signal handler");
+	}
+
+	Logger()->message(LOG_INFO, "Shutting down daemon.");
+	daemon->shutdown();
+	Logger()->message(LOG_INFO, "Daemon shut down.");
 }
 
 void
 DaemonAppEngine::process() const
 {
+	if (signal(SIGINT, &shutdown) == SIG_ERR) {
+		Logger()->message(LOG_WARNING, "Failed to add signal handler");
+	}
+	if (signal(SIGTERM, &shutdown) == SIG_ERR) {
+		Logger()->message(LOG_WARNING, "Failed to add signal handler");
+	}
+	
 	Logger()->message(LOG_INFO, "Starting daemon.");
-	daemon->process();
+	daemon->run();
 	Logger()->message(LOG_INFO, "Daemon exitted.");
 }
 
@@ -37,3 +60,4 @@ DaemonAppEngine::loadLibrary(const std::string & path)
 	return boost::shared_ptr<void>(handle, &dlclose);
 }
 
+
diff --git a/project2/daemon/p2daemonAppEngine.h b/project2/daemon/p2daemonAppEngine.h
index a74f34a..48ef572 100644
--- a/project2/daemon/p2daemonAppEngine.h
+++ b/project2/daemon/p2daemonAppEngine.h
@@ -22,7 +22,8 @@ class DaemonAppEngine {
 		static boost::shared_ptr<void> loadLibrary(const std::string & path);
 
 		boost::shared_ptr<void> library;
-		DaemonPtr daemon;
+		static void shutdown(int);
+		static DaemonPtr daemon;
 };
 
 #endif
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