sd_notify: Add log message

This logs whenever we call sd_notify, the socket path and the actual
message we write. This is incredibly helpful when debugging systemd
behaviour.

Signed-off-by: Tim Meusel <tim@bastelfreak.de>
(cherry picked from commit 39f257c)

Author: bastelfreak

project.clj

@@ -109,7 +109,7 @@
             [org.openvoxproject/i18n ~i18n-version]]
 
   :eastwood {:ignored-faults {:reflection {puppetlabs.trapperkeeper.logging [{:line 92}]
-                                           puppetlabs.trapperkeeper.internal [{:line 174}]
+                                           puppetlabs.trapperkeeper.internal [{:line 177}]
                                            puppetlabs.trapperkeeper.testutils.logging true
                                            puppetlabs.trapperkeeper.testutils.logging-test true
                                            puppetlabs.trapperkeeper.services.nrepl.nrepl-service-test true

src/puppetlabs/trapperkeeper/internal.clj

@@ -61,6 +61,9 @@
   "Send a message to systemd NOTIFY_SOCKET if available."
   [^String message]
   (when-let [^String socket-path systemd-notify-socket]
+    (log/info (i18n/trs "Sending sd_notify message to NOTIFY_SOCKET {0}: {1}"
+                        (pr-str socket-path)
+                        (pr-str message)))
     (let [^AFUNIXSocketAddress addr (socket-addr socket-path)]
       (with-open [^AFUNIXDatagramSocket s (AFUNIXDatagramSocket/newInstance)]
         (try