From bbc450f4eb23751b9d65bf5661c8cc5282648786 Mon Sep 17 00:00:00 2001
From: Steffen Vogel <post@steffenvogel.de>
Date: Wed, 6 Sep 2017 20:31:36 +0200
Subject: [PATCH] web: add new api "status" to fetch runtime status &
 statistics of http / websockets server

---
 lib/api/actions/status.c | 53 ++++++++++++++++++++++++++++++++++++++++
 thirdparty/Makefile.inc  |  2 +-
 2 files changed, 54 insertions(+), 1 deletion(-)
 create mode 100644 lib/api/actions/status.c

diff --git a/lib/api/actions/status.c b/lib/api/actions/status.c
new file mode 100644
index 000000000..6e180f1dc
--- /dev/null
+++ b/lib/api/actions/status.c
@@ -0,0 +1,53 @@
+/** The "stats" API action.
+ *
+ * @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
+ * @copyright 2017, Institute for Automation of Complex Power Systems, EONERC
+ * @license GNU General Public License (version 3)
+ *
+ * VILLASnode
+ *
+ * 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 3 of the License, or
+ * any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *********************************************************************************/
+
+#include <jansson.h>
+
+#include "plugin.h"
+#include "node.h"
+#include "super_node.h"
+#include "utils.h"
+#include "stats.h"
+
+#include "api.h"
+
+static int api_status(struct api_action *r, json_t *args, json_t **resp, struct api_session *s)
+{
+	int ret;
+	struct lws_context *ctx = lws_get_context(s->wsi);
+	char buf[4096];
+
+	ret = lws_json_dump_context(ctx, buf, sizeof(buf), 0);
+
+	*resp = json_loads(buf, 0, NULL);
+
+	return ret;
+}
+
+static struct plugin p = {
+	.name = "status",
+	.description = "get status and statistics of web server",
+	.type = PLUGIN_TYPE_API,
+	.api.cb = api_status
+};
+
+REGISTER_PLUGIN(&p)
diff --git a/thirdparty/Makefile.inc b/thirdparty/Makefile.inc
index 825f8c1c3..250619dbb 100644
--- a/thirdparty/Makefile.inc
+++ b/thirdparty/Makefile.inc
@@ -70,7 +70,7 @@ libconfig-fix:
 	rm -f $(SRCDIR)/thirdparty/libconfig/lib/scanner.[hc]
 
 jansson: CMAKE_OPTS += -DJANSSON_BUILD_DOCS=OFF
-libwebsockets: CMAKE_OPTS += -DLWS_IPV6=1 -DLWS_WITH_STATIC=0 -DLWS_WITHOUT_TESTAPPS=1 -DLWS_WITH_HTTP2=1
+libwebsockets: CMAKE_OPTS += -DLWS_IPV6=1 -DLWS_WITH_STATIC=0 -DLWS_WITHOUT_TESTAPPS=1 -DLWS_WITH_HTTP2=1 -DLWS_WITH_SERVER_STATUS=1
 libzmq: CONFIGURE_OPTS += --with-libsodium --with-pgm --enable-drafts
 
 .PHONY: $(DEPS) thirdparty clean-thirdparty install-thirdparty