182 lines
8.4 KiB
C++
182 lines
8.4 KiB
C++
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// 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_prometheus.h"
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#include "Configuration.h"
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#include "MessageOutput.h"
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#include "NetworkSettings.h"
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#include "WebApi.h"
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#include <Hoymiles.h>
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#include "__compiled_constants.h"
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void WebApiPrometheusClass::init(AsyncWebServer& server, Scheduler& scheduler)
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{
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using std::placeholders::_1;
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server.on("/api/prometheus/metrics", HTTP_GET, std::bind(&WebApiPrometheusClass::onPrometheusMetricsGet, this, _1));
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}
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void WebApiPrometheusClass::onPrometheusMetricsGet(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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auto stream = request->beginResponseStream("text/plain; charset=utf-8", 4096 * INV_MAX_COUNT); // TODO(helge) check if this calculation is correct
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stream->print("# HELP opendtu_build Build info\n");
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stream->print("# TYPE opendtu_build gauge\n");
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stream->printf("opendtu_build{name=\"%s\",id=\"%s\",version=\"%d.%d.%d\"} 1\n",
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NetworkSettings.getHostname().c_str(), __COMPILED_GIT_HASH__, CONFIG_VERSION >> 24 & 0xff, CONFIG_VERSION >> 16 & 0xff, CONFIG_VERSION >> 8 & 0xff);
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stream->print("# HELP opendtu_platform Platform info\n");
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stream->print("# TYPE opendtu_platform gauge\n");
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stream->printf("opendtu_platform{arch=\"%s\",mac=\"%s\"} 1\n", ESP.getChipModel(), NetworkSettings.macAddress().c_str());
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stream->print("# HELP opendtu_uptime Uptime in seconds\n");
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stream->print("# TYPE opendtu_uptime counter\n");
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stream->printf("opendtu_uptime %lld\n", esp_timer_get_time() / 1000000);
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stream->print("# HELP opendtu_heap_size System memory size\n");
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stream->print("# TYPE opendtu_heap_size gauge\n");
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stream->printf("opendtu_heap_size %zu\n", ESP.getHeapSize());
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stream->print("# HELP opendtu_free_heap_size System free memory\n");
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stream->print("# TYPE opendtu_free_heap_size gauge\n");
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stream->printf("opendtu_free_heap_size %zu\n", ESP.getFreeHeap());
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stream->print("# HELP opendtu_biggest_heap_block Biggest free heap block\n");
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stream->print("# TYPE opendtu_biggest_heap_block gauge\n");
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stream->printf("opendtu_biggest_heap_block %zu\n", ESP.getMaxAllocHeap());
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stream->print("# HELP opendtu_heap_min_free Minimum free memory since boot\n");
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stream->print("# TYPE opendtu_heap_min_free gauge\n");
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stream->printf("opendtu_heap_min_free %zu\n", ESP.getMinFreeHeap());
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stream->print("# HELP wifi_rssi WiFi RSSI\n");
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stream->print("# TYPE wifi_rssi gauge\n");
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stream->printf("wifi_rssi %d\n", WiFi.RSSI());
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stream->print("# HELP wifi_station WiFi Station info\n");
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stream->print("# TYPE wifi_station gauge\n");
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stream->printf("wifi_station{bssid=\"%s\"} 1\n", WiFi.BSSIDstr().c_str());
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for (uint8_t i = 0; i < Hoymiles.getNumInverters(); i++) {
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auto inv = Hoymiles.getInverterByPos(i);
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String serial = inv->serialString();
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const char* name = inv->name();
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if (i == 0) {
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stream->print("# HELP opendtu_last_update last update from inverter in s\n");
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stream->print("# TYPE opendtu_last_update gauge\n");
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}
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stream->printf("opendtu_last_update{serial=\"%s\",unit=\"%d\",name=\"%s\"} %d\n",
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serial.c_str(), i, name, inv->Statistics()->getLastUpdate() / 1000);
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if (i == 0) {
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stream->print("# HELP opendtu_inverter_limit_relative current relative limit of the inverter\n");
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stream->print("# TYPE opendtu_inverter_limit_relative gauge\n");
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}
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stream->printf("opendtu_inverter_limit_relative{serial=\"%s\",unit=\"%d\",name=\"%s\"} %f\n",
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serial.c_str(), i, name, inv->SystemConfigPara()->getLimitPercent() / 100.0);
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if (inv->DevInfo()->getMaxPower() > 0) {
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if (i == 0) {
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stream->print("# HELP opendtu_inverter_limit_absolute current relative limit of the inverter\n");
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stream->print("# TYPE opendtu_inverter_limit_absolute gauge\n");
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}
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stream->printf("opendtu_inverter_limit_absolute{serial=\"%s\",unit=\"%d\",name=\"%s\"} %f\n",
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serial.c_str(), i, name, inv->SystemConfigPara()->getLimitPercent() * inv->DevInfo()->getMaxPower() / 100.0);
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}
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// Loop all channels if Statistics have been updated at least once since DTU boot
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if (inv->Statistics()->getLastUpdate() > 0) {
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for (auto& t : inv->Statistics()->getChannelTypes()) {
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for (auto& c : inv->Statistics()->getChannelsByType(t)) {
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addPanelInfo(stream, serial, i, inv, t, c);
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for (uint8_t f = 0; f < sizeof(_publishFields) / sizeof(_publishFields[0]); f++) {
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if (t == TYPE_INV && _publishFields[f].field == FLD_PDC) {
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addField(stream, serial, i, inv, t, c, _publishFields[f].field, _metricTypes[_publishFields[f].type], "PowerDC");
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} else {
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addField(stream, serial, i, inv, t, c, _publishFields[f].field, _metricTypes[_publishFields[f].type]);
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}
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}
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}
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}
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}
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}
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stream->addHeader("Cache-Control", "no-cache");
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request->send(stream);
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} catch (std::bad_alloc& bad_alloc) {
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MessageOutput.printf("Calling /api/prometheus/metrics has temporarily run out of resources. Reason: \"%s\".\r\n", bad_alloc.what());
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WebApi.sendTooManyRequests(request);
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}
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}
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void WebApiPrometheusClass::addField(AsyncResponseStream* stream, const String& serial, const uint8_t idx, std::shared_ptr<InverterAbstract> inv, const ChannelType_t type, const ChannelNum_t channel, const FieldId_t fieldId, const char* metricName, const char* channelName)
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{
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if (inv->Statistics()->hasChannelFieldValue(type, channel, fieldId)) {
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const char* chanName = (channelName == nullptr) ? inv->Statistics()->getChannelFieldName(type, channel, fieldId) : channelName;
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if (idx == 0 && type == TYPE_AC && channel == 0) {
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stream->printf("# HELP opendtu_%s in %s\n", chanName, inv->Statistics()->getChannelFieldUnit(type, channel, fieldId));
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stream->printf("# TYPE opendtu_%s %s\n", chanName, metricName);
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}
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stream->printf("opendtu_%s{serial=\"%s\",unit=\"%d\",name=\"%s\",type=\"%s\",channel=\"%d\"} %s\n",
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chanName,
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serial.c_str(),
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idx,
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inv->name(),
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inv->Statistics()->getChannelTypeName(type),
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channel,
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inv->Statistics()->getChannelFieldValueString(type, channel, fieldId).c_str());
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}
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}
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void WebApiPrometheusClass::addPanelInfo(AsyncResponseStream* stream, const String& serial, const uint8_t idx, std::shared_ptr<InverterAbstract> inv, const ChannelType_t type, const ChannelNum_t channel)
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{
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if (type != TYPE_DC) {
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return;
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}
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const auto& config = Configuration.getInverterConfig(inv->serial());
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const bool printHelp = (idx == 0 && channel == 0);
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if (printHelp) {
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stream->print("# HELP opendtu_PanelInfo panel information\n");
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stream->print("# TYPE opendtu_PanelInfo gauge\n");
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}
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stream->printf("opendtu_PanelInfo{serial=\"%s\",unit=\"%d\",name=\"%s\",channel=\"%d\",panelname=\"%s\"} 1\n",
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serial.c_str(),
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idx,
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inv->name(),
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channel,
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config->channel[channel].Name);
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if (printHelp) {
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stream->print("# HELP opendtu_MaxPower panel maximum output power\n");
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stream->print("# TYPE opendtu_MaxPower gauge\n");
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}
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stream->printf("opendtu_MaxPower{serial=\"%s\",unit=\"%d\",name=\"%s\",channel=\"%d\"} %d\n",
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serial.c_str(),
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idx,
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inv->name(),
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channel,
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config->channel[channel].MaxChannelPower);
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if (printHelp) {
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stream->print("# HELP opendtu_YieldTotalOffset panel yield offset (for used inverters)\n");
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stream->print("# TYPE opendtu_YieldTotalOffset gauge\n");
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}
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stream->printf("opendtu_YieldTotalOffset{serial=\"%s\",unit=\"%d\",name=\"%s\",channel=\"%d\"} %f\n",
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serial.c_str(),
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idx,
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inv->name(),
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channel,
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config->channel[channel].YieldTotalOffset);
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}
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