mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
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78 lines
2.5 KiB
C++
78 lines
2.5 KiB
C++
/** Node type: OMA Next Generation Services Interface 10 (NGSI) (FIWARE context broker)
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*
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* This file implements the NGSI context interface. NGSI is RESTful HTTP is specified by
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* the Open Mobile Alliance (OMA).
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* It uses the standard operations of the NGSI 10 context information standard.
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*
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* @see https://forge.fiware.org/plugins/mediawiki/wiki/fiware/index.php/FI-WARE_NGSI-10_Open_RESTful_API_Specification
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* @see http://technical.openmobilealliance.org/Technical/Release_Program/docs/NGSI/V1_0-20120529-A/OMA-TS-NGSI_Context_Management-V1_0-20120529-A.pdf
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* @file
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* @author Steffen Vogel <svogel2@eonerc.rwth-aachen.de>
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* @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
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* @license Apache 2.0
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*********************************************************************************/
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#pragma once
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#include <curl/curl.h>
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#include <jansson.h>
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#include <villas/list.hpp>
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#include <villas/task.hpp>
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namespace villas {
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namespace node {
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/* Forward declarations */
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class NodeCompat;
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struct ngsi {
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const char *endpoint; /**< The NGSI context broker endpoint URL. */
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const char *entity_id; /**< The context broker entity id related to this node */
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const char *entity_type; /**< The type of the entity */
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const char *access_token; /**< An optional authentication token which will be sent as HTTP header. */
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bool create; /**< Weather we want to create the context element during startup. */
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bool remove; /**< Weather we want to delete the context element during startup. */
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double timeout; /**< HTTP timeout in seconds */
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double rate; /**< Rate used for polling. */
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struct Task task; /**< Timer for periodic events. */
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int ssl_verify; /**< Boolean flag whether SSL server certificates should be verified or not. */
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struct curl_slist *headers; /**< List of HTTP request headers for libcurl */
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struct {
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CURL *curl; /**< libcurl: handle */
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struct List signals; /**< A mapping between indices of the VILLASnode samples and the attributes in ngsi::context */
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} in, out;
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};
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int ngsi_type_start(SuperNode *sn);
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int ngsi_type_stop();
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int ngsi_parse(NodeCompat *n, json_t *json);
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char * ngsi_print(NodeCompat *n);
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int ngsi_init(NodeCompat *n);
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int ngsi_destroy(NodeCompat *n);
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int ngsi_start(NodeCompat *n);
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int ngsi_stop(NodeCompat *n);
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int ngsi_reverse(NodeCompat *n);
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int ngsi_read(NodeCompat *n, struct Sample * const smps[], unsigned cnt);
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int ngsi_write(NodeCompat *n, struct Sample * const smps[], unsigned cnt);
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int ngsi_poll_fds(NodeCompat *n, int fds[]);
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} /* namespace node */
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} /* namespace villas */
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