add missing files

include/villas/queue.hpp

@@ -0,0 +1,59 @@
+/** Wrapper around queue that uses POSIX CV's for signalling writes.
+ *
+ * @file
+ * @author Georg Martin Reinke <georg.reinke@rwth-aachen.de>
+ * @copyright 2017-2018, 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/>.
+ *********************************************************************************/
+
+#pragma once
+
+#include <mutex>
+#include <condition_variable>
+#include <queue>
+
+namespace villas {
+
+template<typename T>
+class Queue {
+
+protected:
+	std::queue<T> queue;
+
+public:
+	void push(T p)
+	{
+		queue.push(p);
+	}
+
+	T pop()
+	{
+		T res = queue.front();
+		queue.pop();
+
+		return res;
+	}
+
+	bool empty()
+	{
+		return queue.empty();
+	}
+
+};
+
+} // namespace villas

lib/api/actions/node.cpp

@@ -0,0 +1,76 @@
+/** The API ressource for start/stop/pause/resume nodes.
+ *
+ * @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
+ * @copyright 2017-2018, 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 <villas/plugin.h>
+#include <villas/node.h>
+#include <villas/super_node.h>
+#include <villas/utils.h>
+#include <villas/stats.h>
+
+#include <villas/api.hpp>
+
+namespace villas {
+namespace node {
+namespace api {
+
+template<int (*A)(struct node *)>
+class NodeAction : public Action  {
+
+proctected:
+	int action(struct node *n) = 0;
+
+public:
+	virtual int execute(json_t *args, json_t **resp)
+	{
+		int ret;
+		json_error_t err;
+		const char *node_str;
+
+		ret = json_unpack_ex(args, &err, 0, "{ s: s }",
+			"node", &node_str
+		);
+		if (ret)
+			return ret;
+
+		struct list *nodes = &s->api->super_node->nodes;
+		struct node *node = list_lookup(nodes, node_str);
+
+		if (!node)
+			return -1;
+
+		return A(node);
+	}
+
+};
+
+/* Register actions */
+static ActionPlugin<NodeAction<node_start>>    p1("node.start",   "start a node");
+static ActionPlugin<NodeAction<node_stop>>     p2("node.stop",    "stop a node");
+static ActionPlugin<NodeAction<node_pause>>    p3("node.pause",   "pause a node");
+static ActionPlugin<NodeAction<node_resume>>   p4("node.resume",  "resume a node");
+static ActionPlugin<NodeAction<node_restart>>  p5("node.restart", "restart a node");
+
+} // api
+} // node
+} // villas