mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
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108 lines
3 KiB
C++
108 lines
3 KiB
C++
/** The "nodes" API ressource.
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*
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* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
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* @copyright 2014-2020, Institute for Automation of Complex Power Systems, EONERC
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* @license GNU General Public License (version 3)
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*
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* VILLASnode
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************************/
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#include <jansson.h>
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#include <uuid/uuid.h>
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#include <villas/super_node.hpp>
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#include <villas/node.h>
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#include <villas/utils.hpp>
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#include <villas/stats.hpp>
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#include <villas/api/session.hpp>
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#include <villas/api/request.hpp>
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#include <villas/api/response.hpp>
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namespace villas {
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namespace node {
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namespace api {
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class NodesRequest : public Request {
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public:
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using Request::Request;
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virtual Response * execute()
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{
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if (method != Method::GET)
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throw InvalidMethod(this);
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if (body != nullptr)
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throw BadRequest("Nodes endpoint does not accept any body data");
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json_t *json_nodes = json_array();
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struct vlist *nodes = session->getSuperNode()->getNodes();
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for (size_t i = 0; i < vlist_length(nodes); i++) {
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struct node *n = (struct node *) vlist_at(nodes, i);
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struct vlist *output_signals;
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json_t *json_node;
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json_t *json_signals_in = nullptr;
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json_t *json_signals_out = nullptr;
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char uuid[37];
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uuid_unparse(n->uuid, uuid);
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json_signals_in = signal_list_to_json(&n->in.signals);
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output_signals = node_output_signals(n);
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if (output_signals)
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json_signals_out = signal_list_to_json(output_signals);
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json_node = json_pack("{ s: s, s: s, s: s, s: i, s: { s: i, s: o? }, s: { s: i, s: o? } }",
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"name", node_name_short(n),
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"uuid", uuid,
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"state", state_print(n->state),
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"affinity", n->affinity,
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"in",
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"vectorize", n->in.vectorize,
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"signals", json_signals_in,
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"out",
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"vectorize", n->out.vectorize,
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"signals", json_signals_out
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);
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if (n->stats)
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json_object_set_new(json_node, "stats", n->stats->toJson());
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/* Add all additional fields of node here.
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* This can be used for metadata */
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json_object_update(json_node, n->cfg);
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json_array_append_new(json_nodes, json_node);
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}
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return new Response(session, json_nodes);
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}
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};
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/* Register API request */
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static char n[] = "nodes";
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static char r[] = "/nodes";
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static char d[] = "retrieve list of all known nodes";
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static RequestPlugin<NodesRequest, n, r, d> p;
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} /* namespace api */
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} /* namespace node */
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} /* namespace villas */
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