VILLASnode/lib/api/requests/node_action.cpp

/* The API ressource for start/stop/pause/resume nodes.
 *
 * Author: Steffen Vogel <post@steffenvogel.de>
 * SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
 * SPDX-License-Identifier: Apache-2.0
 */

#include <jansson.h>

#include <villas/api.hpp>
#include <villas/api/requests/node.hpp>
#include <villas/api/response.hpp>
#include <villas/api/session.hpp>
#include <villas/node.hpp>
#include <villas/super_node.hpp>
#include <villas/utils.hpp>

namespace villas {
namespace node {
namespace api {

template <auto func> class NodeActionRequest : public NodeRequest {

public:
  using NodeRequest::NodeRequest;

  virtual Response *execute() {
    if (method != Session::Method::POST)
      throw InvalidMethod(this);

    if (body != nullptr)
      throw BadRequest("Node endpoints do not accept any body data");

    int ret = (node->*func)();
    if (ret)
      throw BadRequest("Failed to execute action", "{ s: d }", "ret", ret);

    return new Response(session, HTTP_STATUS_OK);
  }
};

// Register API requests
static char n1[] = "node/start";
static char r1[] = "/node/(" RE_NODE_NAME "|" RE_UUID ")/start";
static char d1[] = "start a node";
static RequestPlugin<NodeActionRequest<&Node::start>, n1, r1, d1> p1;

static char n2[] = "node/stop";
static char r2[] = "/node/(" RE_NODE_NAME "|" RE_UUID ")/stop";
static char d2[] = "stop a node";
static RequestPlugin<NodeActionRequest<&Node::stop>, n2, r2, d2> p2;

static char n3[] = "node/pause";
static char r3[] = "/node/(" RE_NODE_NAME "|" RE_UUID ")/pause";
static char d3[] = "pause a node";
static RequestPlugin<NodeActionRequest<&Node::pause>, n3, r3, d3> p3;

static char n4[] = "node/resume";
static char r4[] = "/node/(" RE_NODE_NAME "|" RE_UUID ")/resume";
static char d4[] = "resume a node";
static RequestPlugin<NodeActionRequest<&Node::resume>, n4, r4, d4> p4;

static char n5[] = "node/restart";
static char r5[] = "/node/(" RE_NODE_NAME "|" RE_UUID ")/restart";
static char d5[] = "restart a node";
static RequestPlugin<NodeActionRequest<&Node::restart>, n5, r5, d5> p5;

} // namespace api
} // namespace node
} // namespace villas