mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
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97 lines
2.3 KiB
C++
97 lines
2.3 KiB
C++
/** JSON serializtion for edgeFlex project.
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*
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* @author Manuel Pitz <manuel.pitz@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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#include <cstring>
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#include <villas/timing.hpp>
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#include <villas/formats/json_edgeflex.hpp>
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using namespace villas::node;
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int JsonEdgeflexFormat::packSample(json_t **json_smp, const struct Sample *smp)
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{
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json_t *json_data, *json_value;
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json_t *json_created = nullptr;
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if (smp->length < 1)
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return -1;
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json_data = json_object();
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for (unsigned i = 0; i < smp->length; i++) {
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auto sig = smp->signals->getByIndex(i);
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if (!sig)
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return -1;
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json_value = smp->data[i].toJson(sig->type);
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json_object_set(json_data, sig->name.c_str(), json_value);
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}
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json_created = json_integer(time_to_double(&smp->ts.origin) * 1e3);
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json_object_set(json_data, "created", json_created);
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*json_smp = json_data;
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return 0;
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}
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int JsonEdgeflexFormat::unpackSample(json_t *json_smp, struct Sample *smp)
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{
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int ret;
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const char *key;
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json_t *json_value, *json_created = nullptr;
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json_int_t created = -1;
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if (smp->capacity < 1)
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return -1;
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if (json_typeof(json_smp) != JSON_OBJECT)
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return -1;
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json_object_foreach(json_smp, key, json_value) {
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if (!strcmp(key, "created"))
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json_created = json_incref(json_value);
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else {
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auto idx = signals->getIndexByName(key);
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if (idx < 0) {
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ret = sscanf(key, "signal_%d", &idx);
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if (ret != 1)
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continue;
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if (idx < 0)
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return -1;
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}
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auto sig = signals->getByIndex(idx);
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if (idx < (int) smp->capacity) {
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ret = smp->data[idx].parseJson(sig->type, json_value);
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if (ret)
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return ret;
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}
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if (idx >= (int) smp->length)
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smp->length = idx + 1;
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}
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}
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if (!json_created || !json_is_number(json_created))
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return -1;
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created = json_number_value(json_created);
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smp->ts.origin = time_from_double(created / 1e3);
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smp->flags = (int) SampleFlags::HAS_TS_ORIGIN;
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if (smp->length > 0)
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smp->flags |= (int) SampleFlags::HAS_DATA;
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return 0;
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}
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static char n[] = "json.edgeflex";
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static char d[] = "EdgeFlex JSON format";
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static FormatPlugin<JsonEdgeflexFormat, n, d, (int) SampleFlags::HAS_TS_ORIGIN | (int) SampleFlags::HAS_SEQUENCE | (int) SampleFlags::HAS_DATA> p;
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