feat: notify-purge removes a file if notify success

Closes #1675

Change-Id: I5edd20efabcf94a19932a7066e80d77e6d99f0d2

docs/rtpengine-recording.md

@@ -328,6 +328,11 @@ sufficient for a standard installation of rtpengine.
     is incompatible with DB-only storage as no recording file exists on storage
     (see __output-storage__).
 
+- __\-\-notify-purge__
+
+    Remove the local file if the HTTP request was successful. Note that this
+    option is only useful if __\-\-notify-record__ is also enabled.
+
 ## EXIT STATUS
 
 - __0__

etc/rtpengine-recording.conf

@@ -59,5 +59,6 @@ table = 0
 # notify-uri = https://example.com/rec/finished
 # notify-post = false
 # notify-no-verify = false
+# notify-purge = false
 # notify-concurrency = 5
 # notify-retries = 10

recording-daemon/main.c

@@ -65,6 +65,7 @@ int notify_nverify;
 int notify_threads = 5;
 int notify_retries = 10;
 int notify_record;
+int notify_purge;
 
 static GQueue threads = G_QUEUE_INIT; // only accessed from main thread
 
@@ -221,7 +222,8 @@ static void options(int *argc, char ***argv) {
 		{ "notify-concurrency",	0,   0, G_OPTION_ARG_INT,	&notify_threads,"How many simultaneous requests",	"INT"		},
 		{ "notify-retries",	0,   0, G_OPTION_ARG_INT,	&notify_retries,"How many times to retry failed requesets","INT"	},
 #if CURL_AT_LEAST_VERSION(7,56,0)
-		{ "notify-record", 	0,   0, G_OPTION_ARG_NONE,      &notify_record, "Also attach recorded file to request", NULL            },
+		{ "notify-record", 	0,   0, G_OPTION_ARG_NONE,	&notify_record, "Also attach recorded file to request", NULL		},
+		{ "notify-purge", 	0,   0, G_OPTION_ARG_NONE,	&notify_purge,	"Remove the local file if notify success", NULL		},
 #endif
 		{ NULL, }
 	};

recording-daemon/main.h

@@ -47,6 +47,7 @@ extern int notify_nverify;
 extern int notify_threads;
 extern int notify_retries;
 extern int notify_record;
+extern int notify_purge;
 
 extern volatile int shutdown_flag;
 

recording-daemon/notify.c

@@ -125,6 +125,13 @@ static void do_notify(void *p, void *u) {
 	/* success */
 
 	ilog(LOG_NOTICE, "HTTP notification for '%s%s%s' was successful", FMT_M(req->name));
+
+	if (notify_record && notify_purge) {
+		if (unlink(req->full_filename_path) == 0)
+			ilog(LOG_NOTICE, "File '%s%s%s' deleted successfully.", FMT_M(req->full_filename_path));
+		else
+			ilog(LOG_ERR, "File '%s%s%s' could not be deleted.", FMT_M(req->full_filename_path));
+	}
 	goto cleanup;
 
 fail: