mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
synced 2025-03-09 00:00:00 +01:00
101 lines
2.6 KiB
C++
101 lines
2.6 KiB
C++
/* Cast hook.
|
|
*
|
|
* 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 <villas/hook.hpp>
|
|
#include <villas/sample.hpp>
|
|
|
|
namespace villas {
|
|
namespace node {
|
|
|
|
class CastHook : public MultiSignalHook {
|
|
|
|
protected:
|
|
enum SignalType new_type;
|
|
std::string new_name;
|
|
std::string new_unit;
|
|
|
|
public:
|
|
CastHook(Path *p, Node *n, int fl, int prio, bool en = true)
|
|
: MultiSignalHook(p, n, fl, prio, en), new_type(SignalType::INVALID) {}
|
|
|
|
virtual void prepare() {
|
|
assert(state == State::CHECKED);
|
|
|
|
MultiSignalHook::prepare();
|
|
|
|
for (auto index : signalIndices) {
|
|
auto orig_sig = signals->getByIndex(index);
|
|
|
|
auto type = new_type == SignalType::INVALID ? orig_sig->type : new_type;
|
|
auto name = new_name.empty() ? orig_sig->name : new_name;
|
|
auto unit = new_unit.empty() ? orig_sig->unit : new_unit;
|
|
|
|
(*signals)[index] = std::make_shared<Signal>(name, unit, type);
|
|
}
|
|
|
|
state = State::PREPARED;
|
|
}
|
|
|
|
virtual void parse(json_t *json) {
|
|
int ret;
|
|
|
|
json_error_t err;
|
|
|
|
assert(state != State::STARTED);
|
|
|
|
MultiSignalHook::parse(json);
|
|
|
|
const char *name = nullptr;
|
|
const char *unit = nullptr;
|
|
const char *type = nullptr;
|
|
|
|
ret = json_unpack_ex(json, &err, 0, "{ s?: s, s?: s, s?: s }", "new_type",
|
|
&type, "new_name", &name, "new_unit", &unit);
|
|
if (ret)
|
|
throw ConfigError(json, err, "node-config-hook-cast");
|
|
|
|
if (type) {
|
|
new_type = signalTypeFromString(type);
|
|
if (new_type == SignalType::INVALID)
|
|
throw RuntimeError("Invalid signal type: {}", type);
|
|
} else
|
|
// We use this constant to indicate that we dont want to change the type.
|
|
new_type = SignalType::INVALID;
|
|
|
|
if (name)
|
|
new_name = name;
|
|
|
|
if (unit)
|
|
new_unit = unit;
|
|
|
|
state = State::PARSED;
|
|
}
|
|
|
|
virtual Hook::Reason process(struct Sample *smp) {
|
|
assert(state == State::STARTED);
|
|
|
|
for (auto index : signalIndices) {
|
|
auto orig_sig = smp->signals->getByIndex(index);
|
|
auto new_sig = signals->getByIndex(index);
|
|
|
|
smp->data[index] = smp->data[index].cast(orig_sig->type, new_sig->type);
|
|
}
|
|
|
|
return Reason::OK;
|
|
}
|
|
};
|
|
|
|
// Register hook
|
|
static char n[] = "cast";
|
|
static char d[] = "Cast signals types";
|
|
static constexpr int flags = (int)Hook::Flags::NODE_READ |
|
|
(int)Hook::Flags::NODE_WRITE |
|
|
(int)Hook::Flags::PATH;
|
|
static HookPlugin<CastHook, n, d, flags> p;
|
|
|
|
} // namespace node
|
|
} // namespace villas
|