stats_noreset feature for unbound-control

git-svn-id: https://unbound.nlnetlabs.nl/svn/trunk@1478 be551aaa-1e26-0410-a405-d3ace91eadb9

daemon/remote.c

@@ -846,7 +846,7 @@ print_ext(SSL* ssl, struct stats_info* s)
 
 /** do the stats command */
 static void
-do_stats(SSL* ssl, struct daemon_remote* rc)
+do_stats(SSL* ssl, struct daemon_remote* rc, int reset)
 {
 	struct daemon* daemon = rc->worker->daemon;
 	struct stats_info total;
@@ -854,7 +854,7 @@ do_stats(SSL* ssl, struct daemon_remote* rc)
 	int i;
 	/* gather all thread statistics in one place */
 	for(i=0; i<daemon->num; i++) {
-		server_stats_obtain(rc->worker, daemon->workers[i], &s);
+		server_stats_obtain(rc->worker, daemon->workers[i], &s, reset);
 		if(!print_thread_stats(ssl, i, &s))
 			return;
 		if(i == 0)
@@ -1387,8 +1387,11 @@ execute_cmd(struct daemon_remote* rc, SSL* ssl, char* cmd,
 	} else if(strncmp(p, "reload", 6) == 0) {
 		do_reload(ssl, rc);
 		return;
+	} else if(strncmp(p, "stats_noreset", 13) == 0) {
+		do_stats(ssl, rc, 0);
+		return;
 	} else if(strncmp(p, "stats", 5) == 0) {
-		do_stats(ssl, rc);
+		do_stats(ssl, rc, 1);
 		return;
 	} else if(strncmp(p, "status", 6) == 0) {
 		do_status(ssl, worker);

daemon/stats.c

@@ -115,7 +115,7 @@ get_rrset_bogus(struct worker* worker)
 }
 
 void
-server_stats_compile(struct worker* worker, struct stats_info* s)
+server_stats_compile(struct worker* worker, struct stats_info* s, int reset)
 {
 	int i;
 
@@ -143,24 +143,26 @@ server_stats_compile(struct worker* worker, struct stats_info* s)
 	/* get and reset validator rrset bogus number */
 	s->svr.rrset_bogus = get_rrset_bogus(worker);
 
-	if(!worker->env.cfg->stat_cumulative) {
+	if(reset && !worker->env.cfg->stat_cumulative) {
 		worker_stats_clear(worker);
 	}
 }
 
 void server_stats_obtain(struct worker* worker, struct worker* who,
-	struct stats_info* s)
+	struct stats_info* s, int reset)
 {
 	uint8_t *reply = NULL;
 	uint32_t len = 0;
 	if(worker == who) {
 		/* just fill it in */
-		server_stats_compile(worker, s);
+		server_stats_compile(worker, s, reset);
 		return;
 	}
 	/* communicate over tube */
 	verbose(VERB_ALGO, "write stats cmd");
-	worker_send_cmd(who, worker_cmd_stats);
+	if(reset)
+		worker_send_cmd(who, worker_cmd_stats);
+	else 	worker_send_cmd(who, worker_cmd_stats_noreset);
 	verbose(VERB_ALGO, "wait for stats reply");
 	if(!tube_read_msg(worker->cmd, &reply, &len, 0))
 		fatal_exit("failed to read stats over cmd channel");
@@ -171,10 +173,10 @@ void server_stats_obtain(struct worker* worker, struct worker* who,
 	free(reply);
 }
 
-void server_stats_reply(struct worker* worker)
+void server_stats_reply(struct worker* worker, int reset)
 {
 	struct stats_info s;
-	server_stats_compile(worker, &s);
+	server_stats_compile(worker, &s, reset);
 	verbose(VERB_ALGO, "write stats replymsg");
 	if(!tube_write_msg(worker->daemon->workers[0]->cmd, 
 		(uint8_t*)&s, sizeof(s), 0))

daemon/stats.h

@@ -175,23 +175,29 @@ void server_stats_log(struct server_stats* stats, struct worker* worker,
  * @param worker: the worker that is executing (the first worker).
  * @param who: on who to get the statistics info.
  * @param s: the stats block to fill in.
+ * @param reset: if stats can be reset.
  */
 void server_stats_obtain(struct worker* worker, struct worker* who,
-	struct stats_info* s);
+	struct stats_info* s, int reset);
 
 /**
  * Compile stats into structure for this thread worker.
  * Also clears the statistics counters (if that is set by config file).
  * @param worker: the worker to compile stats for, also the executing worker.
  * @param s: stats block.
+ * @param reset: if true, depending on config stats are reset.
+ * 	if false, statistics are not reset.
  */
-void server_stats_compile(struct worker* worker, struct stats_info* s);
+void server_stats_compile(struct worker* worker, struct stats_info* s, 
+	int reset);
 
 /**
  * Send stats over comm tube in reply to query cmd
  * @param worker: this worker.
+ * @param reset: if true, depending on config stats are reset.
+ * 	if false, statistics are not reset.
  */
-void server_stats_reply(struct worker* worker);
+void server_stats_reply(struct worker* worker, int reset);
 
 /**
  * Addup stat blocks.

daemon/worker.c

@@ -342,7 +342,11 @@ worker_handle_control_cmd(struct tube* ATTR_UNUSED(tube), uint8_t* msg,
 		break;
 	case worker_cmd_stats:
 		verbose(VERB_ALGO, "got control cmd stats");
-		server_stats_reply(worker);
+		server_stats_reply(worker, 1);
+		break;
+	case worker_cmd_stats_noreset:
+		verbose(VERB_ALGO, "got control cmd stats_noreset");
+		server_stats_reply(worker, 0);
 		break;
 	case worker_cmd_remote:
 		verbose(VERB_ALGO, "got control cmd remote");

daemon/worker.h

@@ -67,6 +67,8 @@ enum worker_commands {
 	worker_cmd_quit,
 	/** obtain statistics */
 	worker_cmd_stats,
+	/** obtain statistics without statsclear */
+	worker_cmd_stats_noreset,
 	/** execute remote control command */
 	worker_cmd_remote
 };

doc/Changelog

@@ -2,6 +2,7 @@
 	- call setusercontext if available (on BSD).
 	- small refactor of stats clearing.
 	- #227: flush_stats feature for unbound-control.
+	- stats_noreset feature for unbound-control.
 
 10 February 2009: Wouter
 	- keys with rfc5011 REVOKE flag are skipped and not considered when

doc/TODO

@@ -59,7 +59,6 @@ o local-zone directive with authority service, full authority server
 o remote control read ssl information while priviledged.
  
 o infra and lame cache: easier size config (in Mb), show usage in graphs.
-o unbound_control get_stats_noreset
 o unbound_control forward [addr {addr}] | [off]
 o config entry to denote that a zone is to be treated as unsigned (even if 
   a DS exists to higher trust anchor).

doc/unbound-control.8.in

@@ -61,6 +61,10 @@ Print statistics. Resets the internal counters to zero, this can be
 controlled using the \fBstatistics\-cumulative\fR config statement. 
 Statistics are printed with one [name]: [value] per line.
 .TP
+.B stats_noreset
+Peek at statistics. Prints them like the \fBstats\fR command does, but does not
+reset the internal counters to zero.
+.TP
 .B status
 Display server status. Exit code 3 if not running (the connection to the 
 port is refused), 1 on error, 0 if running.

smallapp/unbound-control.c

@@ -62,6 +62,7 @@ usage()
 	printf("  stop				stops the server\n");
 	printf("  reload			reloads the server\n");
 	printf("  stats				print statistics\n");
+	printf("  stats_noreset			peek at statistics\n");
 	printf("  status			display status of server\n");
 	printf("  verbosity [number]		change logging detail\n");
 	printf("  local_zone [name] [type] 	add new local zone\n");