swanctl: Add a --stats command to print daemon infos and statistics

src/swanctl/Makefile.am

@@ -15,6 +15,7 @@ swanctl_SOURCES = \
 	commands/load_pools.c \
 	commands/log.c \
 	commands/version.c \
+	commands/stats.c \
 	swanctl.c swanctl.h
 
 swanctl_LDADD = \

src/swanctl/command.h

@@ -27,7 +27,7 @@
 /**
  * Maximum number of commands (+1).
  */
-#define MAX_COMMANDS 15
+#define MAX_COMMANDS 16
 
 /**
  * Maximum number of options in a command (+3)

src/swanctl/commands/stats.c

@@ -0,0 +1,118 @@
+/*
+ * Copyright (C) 2014 Martin Willi
+ * Copyright (C) 2014 revosec AG
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#include "command.h"
+
+#include <errno.h>
+
+static int stats(vici_conn_t *conn)
+{
+	vici_req_t *req;
+	vici_res_t *res;
+	char *arg;
+	command_format_options_t format = COMMAND_FORMAT_NONE;
+
+	while (TRUE)
+	{
+		switch (command_getopt(&arg))
+		{
+			case 'h':
+				return command_usage(NULL);
+			case 'P':
+				format |= COMMAND_FORMAT_PRETTY;
+				/* fall through to raw */
+			case 'r':
+				format |= COMMAND_FORMAT_RAW;
+				continue;
+			case EOF:
+				break;
+			default:
+				return command_usage("invalid --stats option");
+		}
+		break;
+	}
+
+	req = vici_begin("stats");
+	res = vici_submit(req, conn);
+	if (!res)
+	{
+		fprintf(stderr, "stats request failed: %s\n", strerror(errno));
+		return errno;
+	}
+	if (format & COMMAND_FORMAT_RAW)
+	{
+		vici_dump(res, "stats reply", format & COMMAND_FORMAT_PRETTY, stdout);
+	}
+	else
+	{
+		printf("uptime: %s, since %s\n",
+			vici_find_str(res, "", "uptime.running"),
+			vici_find_str(res, "", "uptime.since"));
+
+		printf("worker threads: %s total, %s idle, working: %s/%s/%s/%s\n",
+			vici_find_str(res, "", "workers.total"),
+			vici_find_str(res, "", "workers.idle"),
+			vici_find_str(res, "", "workers.active.critical"),
+			vici_find_str(res, "", "workers.active.high"),
+			vici_find_str(res, "", "workers.active.medium"),
+			vici_find_str(res, "", "workers.active.low"));
+
+		printf("job queues: %s/%s/%s/%s\n",
+			vici_find_str(res, "", "queues.critical"),
+			vici_find_str(res, "", "queues.high"),
+			vici_find_str(res, "", "queues.medium"),
+			vici_find_str(res, "", "queues.low"));
+
+		printf("jobs scheduled: %s\n",
+			vici_find_str(res, "", "scheduled"));
+
+		printf("IKE_SAs: %s total, %s half-open\n",
+			vici_find_str(res, "", "ikesas.total"),
+			vici_find_str(res, "", "ikesas.half-open"));
+
+		if (vici_find_str(res, NULL, "mem.total"))
+		{
+			printf("memory usage: %s bytes, %s allocations\n",
+				vici_find_str(res, "", "mem.total"),
+				vici_find_str(res, "", "mem.allocs"));
+		}
+		if (vici_find_str(res, NULL, "mallinfo.sbrk"))
+		{
+			printf("mallinfo: sbrk %s, mmap %s, used %s, free %s\n",
+				vici_find_str(res, "", "mallinfo.sbrk"),
+				vici_find_str(res, "", "mallinfo.mmap"),
+				vici_find_str(res, "", "mallinfo.used"),
+				vici_find_str(res, "", "mallinfo.free"));
+		}
+	}
+	vici_free_res(res);
+	return 0;
+}
+
+/**
+ * Register the command.
+ */
+static void __attribute__ ((constructor))reg()
+{
+	command_register((command_t) {
+		stats, 'S', "stats", "show daemon stats information",
+		{"[--raw|--pretty]"},
+		{
+			{"help",		'h', 0, "show usage information"},
+			{"raw",			'r', 0, "dump raw response message"},
+			{"pretty",		'P', 0, "dump raw response message in pretty print"},
+		}
+	});
+}