8bfb5c6523
this method calls the overflowed() method on the respective DynamicJsonDocument and prints a respective message if not all data could be added to the DynamicJsonDocument.
127 lines
4.5 KiB
C++
127 lines
4.5 KiB
C++
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (C) 2022-2024 Thomas Basler and others
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*/
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#include "WebApi_ws_battery.h"
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#include "AsyncJson.h"
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#include "Configuration.h"
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#include "Battery.h"
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#include "MessageOutput.h"
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#include "WebApi.h"
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#include "defaults.h"
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#include "Utils.h"
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WebApiWsBatteryLiveClass::WebApiWsBatteryLiveClass()
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: _ws("/batterylivedata")
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{
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}
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void WebApiWsBatteryLiveClass::init(AsyncWebServer& server, Scheduler& scheduler)
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{
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using std::placeholders::_1;
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using std::placeholders::_2;
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using std::placeholders::_3;
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using std::placeholders::_4;
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using std::placeholders::_5;
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using std::placeholders::_6;
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_server = &server;
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_server->on("/api/batterylivedata/status", HTTP_GET, std::bind(&WebApiWsBatteryLiveClass::onLivedataStatus, this, _1));
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_server->addHandler(&_ws);
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_ws.onEvent(std::bind(&WebApiWsBatteryLiveClass::onWebsocketEvent, this, _1, _2, _3, _4, _5, _6));
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scheduler.addTask(_wsCleanupTask);
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_wsCleanupTask.setCallback(std::bind(&WebApiWsBatteryLiveClass::wsCleanupTaskCb, this));
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_wsCleanupTask.setIterations(TASK_FOREVER);
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_wsCleanupTask.setInterval(1 * TASK_SECOND);
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_wsCleanupTask.enable();
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scheduler.addTask(_sendDataTask);
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_sendDataTask.setCallback(std::bind(&WebApiWsBatteryLiveClass::sendDataTaskCb, this));
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_sendDataTask.setIterations(TASK_FOREVER);
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_sendDataTask.setInterval(1 * TASK_SECOND);
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_sendDataTask.enable();
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}
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void WebApiWsBatteryLiveClass::wsCleanupTaskCb()
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{
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// see: https://github.com/me-no-dev/ESPAsyncWebServer#limiting-the-number-of-web-socket-clients
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_ws.cleanupClients();
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}
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void WebApiWsBatteryLiveClass::sendDataTaskCb()
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{
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// do nothing if no WS client is connected
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if (_ws.count() == 0) {
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return;
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}
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if (!Battery.getStats()->updateAvailable(_lastUpdateCheck)) { return; }
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_lastUpdateCheck = millis();
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try {
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std::lock_guard<std::mutex> lock(_mutex);
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DynamicJsonDocument root(_responseSize);
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if (Utils::checkJsonAlloc(root, __FUNCTION__, __LINE__)) {
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JsonVariant var = root;
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generateJsonResponse(var);
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if (Utils::checkJsonOverflow(root, __FUNCTION__, __LINE__)) { return; }
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// battery provider does not generate a card, e.g., MQTT provider
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if (root.isNull()) { return; }
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String buffer;
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serializeJson(root, buffer);
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if (Configuration.get().Security.AllowReadonly) {
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_ws.setAuthentication("", "");
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} else {
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_ws.setAuthentication(AUTH_USERNAME, Configuration.get().Security.Password);
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}
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_ws.textAll(buffer);
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}
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} catch (std::bad_alloc& bad_alloc) {
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MessageOutput.printf("Calling /api/batterylivedata/status has temporarily run out of resources. Reason: \"%s\".\r\n", bad_alloc.what());
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} catch (const std::exception& exc) {
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MessageOutput.printf("Unknown exception in /api/batterylivedata/status. Reason: \"%s\".\r\n", exc.what());
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}
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}
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void WebApiWsBatteryLiveClass::generateJsonResponse(JsonVariant& root)
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{
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Battery.getStats()->getLiveViewData(root);
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}
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void WebApiWsBatteryLiveClass::onWebsocketEvent(AsyncWebSocket* server, AsyncWebSocketClient* client, AwsEventType type, void* arg, uint8_t* data, size_t len)
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{
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if (type == WS_EVT_CONNECT) {
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MessageOutput.printf("Websocket: [%s][%u] connect\r\n", server->url(), client->id());
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} else if (type == WS_EVT_DISCONNECT) {
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MessageOutput.printf("Websocket: [%s][%u] disconnect\r\n", server->url(), client->id());
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}
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}
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void WebApiWsBatteryLiveClass::onLivedataStatus(AsyncWebServerRequest* request)
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{
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if (!WebApi.checkCredentialsReadonly(request)) {
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return;
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}
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try {
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std::lock_guard<std::mutex> lock(_mutex);
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AsyncJsonResponse* response = new AsyncJsonResponse(false, _responseSize);
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auto& root = response->getRoot();
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generateJsonResponse(root);
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response->setLength();
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request->send(response);
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} catch (std::bad_alloc& bad_alloc) {
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MessageOutput.printf("Calling /api/batterylivedata/status has temporarily run out of resources. Reason: \"%s\".\r\n", bad_alloc.what());
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WebApi.sendTooManyRequests(request);
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} catch (const std::exception& exc) {
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MessageOutput.printf("Unknown exception in /api/batterylivedata/status. Reason: \"%s\".\r\n", exc.what());
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WebApi.sendTooManyRequests(request);
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}
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} |