1dd64a57fd
we used this library solely to interpret the answer of an HTTP web server as JSON and find a particular value using a path expression in the HTTP power meter implementation. since we ran out of flash memory on non-S3 ESP32, we need to cut some corners. removing FirebaseJson is the last low-hanging fruit that we currently know of. we can get rid of it by using ArduinoJson (which is already integral part of the firmware) and implementing a custom logic to extract a value based on a path expression. other than the FirebaseJson path "finder", the new implementation only knows how to access sub-keys delimited by a forward slash. in particular, accessing array members is not supported any more. I am hoping that this is simply not an issue. if so, we will have users complaining and we can add this functionality in a later release.
35 lines
1.4 KiB
C++
35 lines
1.4 KiB
C++
// SPDX-License-Identifier: GPL-2.0-or-later
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#pragma once
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#include <stdint.h>
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#include <Arduino.h>
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#include <HTTPClient.h>
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#include "Configuration.h"
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using Auth_t = PowerMeterHttpConfig::Auth;
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using Unit_t = PowerMeterHttpConfig::Unit;
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class HttpPowerMeterClass {
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public:
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void init();
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bool updateValues();
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float getPower(int8_t phase);
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char httpPowerMeterError[256];
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bool queryPhase(int phase, PowerMeterHttpConfig const& config);
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private:
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float power[POWERMETER_MAX_PHASES];
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HTTPClient httpClient;
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String httpResponse;
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bool httpRequest(int phase, WiFiClient &wifiClient, const String& host, uint16_t port, const String& uri, bool https, PowerMeterHttpConfig const& config);
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bool extractUrlComponents(String url, String& _protocol, String& _hostname, String& _uri, uint16_t& uint16_t, String& _base64Authorization);
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String extractParam(String& authReq, const String& param, const char delimit);
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String getcNonce(const int len);
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String getDigestAuth(String& authReq, const String& username, const String& password, const String& method, const String& uri, unsigned int counter);
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bool tryGetFloatValueForPhase(int phase, String jsonPath, Unit_t unit, bool signInverted);
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void prepareRequest(uint32_t timeout, const char* httpHeader, const char* httpValue);
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String sha256(const String& data);
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};
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extern HttpPowerMeterClass HttpPowerMeter;
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