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VILLASnode/lib/api/requests/node_stats.cpp

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/** The API ressource for querying statistics.
*
* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
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* @copyright 2014-2020, 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/log.h>
#include <villas/node.h>
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#include <villas/stats.hpp>
#include <villas/super_node.hpp>
#include <villas/utils.hpp>
#include <villas/api.hpp>
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#include <villas/api/session.hpp>
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#include <villas/api/node_request.hpp>
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#include <villas/api/response.hpp>
namespace villas {
namespace node {
namespace api {
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class StatsRequest : public NodeRequest {
public:
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using NodeRequest::NodeRequest;
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virtual Response * execute()
{
if (method != Session::Method::GET)
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throw InvalidMethod(this);
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if (body != nullptr)
throw BadRequest("Stats endpoint does not accept any body data");
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if (node->stats == nullptr)
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throw BadRequest("The statistics collection for this node is not enabled");
return new JsonResponse(session, HTTP_STATUS_OK, node->stats->toJson());
}
};
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/* Register API requests */
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static char n[] = "node/stats";
static char r[] = "/node/(" RE_NODE_NAME "|" RE_UUID ")/stats";
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static char d[] = "get internal statistics counters";
static RequestPlugin<StatsRequest, n, r, d> p;
} /* namespace api */
} /* namespace node */
} /* namespace villas */