mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
synced 2025-03-16 00:00:02 +01:00
140 lines
3.2 KiB
C++
140 lines
3.2 KiB
C++
/** API session.
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*
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* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
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* @copyright 2017-2018, 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 <sstream>
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#include <libwebsockets.h>
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#include <villas/web.hpp>
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#include <villas/plugin.h>
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#include <villas/memory.h>
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#include <villas/api/session.hpp>
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#include <villas/api/action.hpp>
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using namespace villas;
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using namespace villas::node::api;
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Logger Session::logger = logging.get("api:session");
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Session::Session(Api *a) :
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runs(0),
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api(a)
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{
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queue_init(&request.queue, 128, &memory_heap);
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queue_init(&response.queue, 128, &memory_heap);
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logger->debug("Initiated API session: {}", getName());
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}
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Session::~Session()
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{
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queue_destroy(&request.queue);
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queue_destroy(&response.queue);
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}
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void Session::runPendingActions()
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{
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json_t *req, *resp;
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while (queue_available(&request.queue) > 0) {
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queue_pull(&request.queue, (void **) &req);
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runAction(req, &resp);
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json_decref(req);
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queue_push(&response.queue, resp);
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}
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}
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int Session::runAction(json_t *json_in, json_t **json_out)
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{
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int ret;
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const char *action;
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char *id;
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json_t *json_args = nullptr;
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json_t *json_resp = nullptr;
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ret = json_unpack(json_in, "{ s: s, s: s, s?: o }",
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"action", &action,
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"id", &id,
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"request", &json_args);
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if (ret) {
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ret = -100;
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*json_out = json_pack("{ s: s, s: i }",
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"error", "invalid request",
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"code", ret);
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logger->debug("Completed API request: action={}, id={}, code={}", action, id, ret);
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return 0;
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}
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auto acf = plugin::Registry::lookup<ActionFactory>(action);
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if (!acf) {
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ret = -101;
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*json_out = json_pack("{ s: s, s: s, s: i, s: s }",
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"action", action,
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"id", id,
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"code", ret,
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"error", "action not found");
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logger->debug("Completed API request: action={}, id={}, code={}", action, id, ret);
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return 0;
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}
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logger->debug("Running API request: action={}, id={}", action, id);
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Action *act = acf->make(this);
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ret = act->execute(json_args, &json_resp);
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if (ret)
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*json_out = json_pack("{ s: s, s: s, s: i, s: s }",
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"action", action,
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"id", id,
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"code", ret,
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"error", "action failed");
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else
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*json_out = json_pack("{ s: s, s: s }",
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"action", action,
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"id", id);
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if (json_resp)
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json_object_set_new(*json_out, "response", json_resp);
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logger->debug("Completed API request: action={}, id={}, code={}", action, id, ret);
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runs++;
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return 0;
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}
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std::string Session::getName()
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{
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std::stringstream ss;
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ss << "version=" << version << ", runs=" << runs;
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return ss.str();
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}
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