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/*
* Copyright (C) 2016 "IoT.bzh"
* Author Romain Forlot <romain.forlot@iot.bzh>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#define CTL_PLUGIN_MAGIC 1286576532
#include <afb/afb-binding.h>
#include <systemd/sd-event.h>
#include <json-c/json_object.h>
#include <stdbool.h>
#include <string.h>
#include "signal-composer.hpp"
#include "wrap-json.h"
extern "C"
{
CTLP_CAPI_REGISTER("low-can");
typedef struct {
json_object* door;
json_object* window;
} doorT;
typedef struct {
doorT front_left;
doorT front_right;
doorT rear_left;
doorT rear_right;
} allDoorsCtxT;
struct pluginCtxT {
json_object *subscriptionBatch;
allDoorsCtxT allDoorsCtx;
};
void setDoor(doorT* aDoor, const char* eventName, json_object* eventStatus)
{
if(json_object_is_type(eventStatus, json_type_boolean)) {
if(strcasestr(eventName, "door")) aDoor->door = eventStatus;
else if(strcasestr(eventName, "window")) aDoor->window = eventStatus;
}
}
// Call at initialisation time
CTLP_ONLOAD(plugin, composerHandle)
{
struct pluginCtxT* pluginCtx = new struct pluginCtxT;
pluginCtx->subscriptionBatch = json_object_new_array();
memset(&pluginCtx->allDoorsCtx, 0, sizeof(allDoorsCtxT));
struct signalCBT* handle = (struct signalCBT*)composerHandle;
handle->pluginCtx = (void*)pluginCtx;
plugin->context = (void*)handle;
return 0;
}
CTLP_CAPI (subscribeToLow, source, argsJ, eventJ) {
json_object* metadataJ = nullptr, *dependsArrayJ = nullptr, *subscribeArgsJ = nullptr, *subscribeFilterJ = nullptr, *responseJ = nullptr, *filterJ = nullptr;
const char *id = nullptr, *event = nullptr, *unit = nullptr;
double frequency = 0;
int err = 0;
struct signalCBT* context = reinterpret_cast<struct signalCBT*>(source->context);
struct pluginCtxT* pluginCtx = reinterpret_cast<struct pluginCtxT*>(context->pluginCtx);
if(eventJ)
{
err = wrap_json_unpack(eventJ, "{ss,s?s,s?o,s?s,s?o,s?F,s?o !}",
"uid", &id,
"event", &event,
"depends", &dependsArrayJ,
"unit", &unit,
"metadata", &metadataJ,
"frequency", &frequency,
"getSignalsArgs", &filterJ);
if(err)
{
AFB_API_ERROR(source->api, "Problem to unpack JSON object eventJ: %s",
json_object_to_json_string(eventJ));
return err;
}
if(frequency > 0 && !filterJ)
{wrap_json_pack(&subscribeFilterJ, "{sf}", "frequency", frequency);}
else
{
json_object_get(filterJ);
subscribeFilterJ = filterJ;
}
std::string eventStr = std::string(event);
std::string lowEvent = eventStr.substr(eventStr.find("/")+1);
err = wrap_json_pack(&subscribeArgsJ, "{ss, so*}",
"event", lowEvent.c_str(),
"filter", subscribeFilterJ);
if(err)
{
AFB_API_ERROR(source->api, "Error building subscription query object");
return err;
}
json_object_array_add(pluginCtx->subscriptionBatch, subscribeArgsJ);
}
else
{
json_object_get(pluginCtx->subscriptionBatch);
AFB_API_DEBUG(source->api, "Calling subscribe with %s", json_object_to_json_string(pluginCtx->subscriptionBatch));
err = afb_api_call_sync_legacy(source->api, "low-can", "subscribe", pluginCtx->subscriptionBatch, &responseJ);
if(err)
{AFB_API_ERROR(source->api, "Subscribe to '%s' responseJ:%s", json_object_to_json_string(pluginCtx->subscriptionBatch), json_object_to_json_string(responseJ));}
// Renew subscription json object for the next time we need it
json_object_put(pluginCtx->subscriptionBatch);
pluginCtx->subscriptionBatch = json_object_new_array();
}
return err;
}
CTLP_CAPI (isOpen, source, argsJ, eventJ) {
const char *eventName = nullptr;
json_object *eventStatus;
uint64_t timestamp;
struct signalCBT* context = reinterpret_cast<struct signalCBT*>(source->context);
struct pluginCtxT* pluginCtx = reinterpret_cast<struct pluginCtxT*>(context->pluginCtx);
int err = wrap_json_unpack(eventJ, "{ss,so,s?I}",
"name", &eventName,
"value", &eventStatus,
"timestamp", ×tamp);
if(err)
{
AFB_API_ERROR(source->api, "Error parsing event %s", json_object_to_json_string(eventJ));
return -1;
}
if(strcasestr(eventName, "front_left"))
{
context->searchNsetSignalValue(eventName,(uint64_t)timestamp, eventStatus);
setDoor(&pluginCtx->allDoorsCtx.front_left, eventName, eventStatus);
}
else if(strcasestr(eventName, "front_right"))
{
context->searchNsetSignalValue(eventName,(uint64_t)timestamp, eventStatus);
setDoor(&pluginCtx->allDoorsCtx.front_right, eventName, eventStatus);
}
else if(strcasestr(eventName, "rear_left"))
{
context->searchNsetSignalValue(eventName,(uint64_t)timestamp, eventStatus);
setDoor(&pluginCtx->allDoorsCtx.rear_left, eventName, eventStatus);
}
else if(strcasestr(eventName, "rear_right"))
{
context->searchNsetSignalValue(eventName,(uint64_t)timestamp, eventStatus);
setDoor(&pluginCtx->allDoorsCtx.rear_right, eventName, eventStatus);
}
else
{
AFB_API_WARNING(source->api, "Unexpected behavior, this '%s' is it really a door ! ", json_object_to_json_string(eventJ));
return -1;
}
AFB_API_DEBUG(source->api, "This is the situation: source:%s, args:%s, event:%s,\n fld: %s, flw: %s, frd: %s, frw: %s, rld: %s, rlw: %s, rrd: %s, rrw: %s",
source->uid,
argsJ ? json_object_to_json_string(argsJ):"",
eventJ ? json_object_to_json_string(eventJ):"",
json_object_get_string(pluginCtx->allDoorsCtx.front_left.door),
json_object_get_string(pluginCtx->allDoorsCtx.front_left.window),
json_object_get_string(pluginCtx->allDoorsCtx.front_right.door),
json_object_get_string(pluginCtx->allDoorsCtx.front_right.window),
json_object_get_string(pluginCtx->allDoorsCtx.rear_left.door),
json_object_get_string(pluginCtx->allDoorsCtx.rear_left.window),
json_object_get_string(pluginCtx->allDoorsCtx.rear_right.door),
json_object_get_string(pluginCtx->allDoorsCtx.rear_right.window)
);
return 0;
}
}
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