commit 774071c8d57301610c553133ec740a3564d78f2c
author Davide Pesavento <davide.pesavento@lip6.fr> Thu Nov 15 21:33:23 2018 -0500
committer Davide Pesavento <davide.pesavento@lip6.fr> Wed Nov 21 00:19:22 2018 -0500
tree 64d9653a979aa87e58cc32ef7b7af7a08ddd9d38
parent d27841b7d5bf7b1645b45452f1d94ff9dcbfd085

daemon: basic systemd integration

Notify systemd when NFD is ready/reloading/terminating

Change-Id: I833b48fbcaf6ecc2c4bb8a1da67d4eb9a050c116
Refs: #2815

daemon/main.cpp

diff --git a/daemon/main.cpp b/daemon/main.cpp
index f6d482d..5999ea1 100644
--- a/daemon/main.cpp
+++ b/daemon/main.cpp
@@ -54,6 +54,9 @@
 #ifdef HAVE_LIBPCAP
 #include <pcap/pcap.h>
 #endif
+#ifdef HAVE_SYSTEMD
+#include <systemd/sd-daemon.h>
+#endif
 #ifdef HAVE_WEBSOCKET
 #include <websocketpp/version.hpp>
 #endif
@@ -151,6 +154,7 @@
     }
 
     try {
+      systemdNotify("READY=1");
       mainIo->run();
     }
     catch (const std::exception& e) {
@@ -175,6 +179,15 @@
     return retval;
   }
 
+  static void
+  systemdNotify(const char* state)
+  {
+#ifdef HAVE_SYSTEMD
+    sd_notify(0, state);
+#endif
+  }
+
+private:
   void
   terminate(const boost::system::error_code& error, int signalNo)
   {
@@ -182,6 +195,8 @@
       return;
 
     NFD_LOG_INFO("Caught signal '" << ::strsignal(signalNo) << "', exiting...");
+
+    systemdNotify("STOPPING=1");
     getGlobalIoService().stop();
   }
 
@@ -192,7 +207,10 @@
       return;
 
     NFD_LOG_INFO("Caught signal '" << ::strsignal(signalNo) << "', reloading...");
+
+    systemdNotify("RELOADING=1");
     m_nfd.reloadConfigFile();
+    systemdNotify("READY=1");
 
     m_reloadSignalSet.async_wait(bind(&NfdRunner::reload, this, _1, _2));
   }