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implemented prometheus metrics

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This commit is contained in:
Dominik Westner 2022-10-27 10:38:52 +02:00
parent 8b158a029e
commit e5bbb7f517
5 changed files with 122 additions and 1 deletions
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2
include/WebApi.h
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@ -12,6 +12,7 @@
#include "WebApi_network.h"
#include "WebApi_ntp.h"
#include "WebApi_power.h"
#include "WebApi_prometheus.h"
#include "WebApi_security.h"
#include "WebApi_sysstatus.h"
#include "WebApi_webapp.h"
@ -41,6 +42,7 @@ private:
WebApiNetworkClass _webApiNetwork;
WebApiNtpClass _webApiNtp;
WebApiPowerClass _webApiPower;
WebApiPrometheusClass _webApiPrometheus;
WebApiSecurityClass _webApiSecurity;
WebApiSysstatusClass _webApiSysstatus;
WebApiWebappClass _webApiWebapp;

17
include/WebApi_prometheus.h Normal file
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@ -0,0 +1,17 @@
#pragma once
#include <ESPAsyncWebServer.h>
#include "Hoymiles.h"
class WebApiPrometheusClass {
public:
void init(AsyncWebServer* server);
void loop();
private:
void onPrometheusMetrics(AsyncWebServerRequest* request);
void addField(AsyncResponseStream *stream, const char* serial, uint8_t idx, std::shared_ptr<InverterAbstract> inv, uint8_t channel, uint8_t fieldId, const char* channelName = NULL);
AsyncWebServer* _server;
};

1
src/WebApi.cpp
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@ -29,6 +29,7 @@ void WebApiClass::init()
_webApiNetwork.init(&_server);
_webApiNtp.init(&_server);
_webApiPower.init(&_server);
_webApiPrometheus.init(&_server);
_webApiSecurity.init(&_server);
_webApiSysstatus.init(&_server);
_webApiWebapp.init(&_server);

101
src/WebApi_prometheus.cpp Normal file
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@ -0,0 +1,101 @@
#include "WebApi_prometheus.h"
#include "Configuration.h"
#include "NetworkSettings.h"
#include "Hoymiles.h"
void WebApiPrometheusClass::init(AsyncWebServer* server)
{
using std::placeholders::_1;
_server = server;
_server->on("/metrics", HTTP_GET, std::bind(&WebApiPrometheusClass::onPrometheusMetrics, this, _1));
}
void WebApiPrometheusClass::loop()
{
}
void WebApiPrometheusClass::onPrometheusMetrics(AsyncWebServerRequest* request)
{
auto stream = request->beginResponseStream("text/plain; charset=utf-8", 8192);
stream->print(F("# HELP opendtu_build Build info\n"));
stream->print(F("# TYPE opendtu_build gauge\n"));
stream->printf("opendtu_build{name=\"%s\",id=\"%s\",version=\"%d.%d.%d\"} 1\n",
NetworkSettings.getHostname().c_str(), AUTO_GIT_HASH, CONFIG_VERSION >> 24 & 0xff, CONFIG_VERSION >> 16 & 0xff, CONFIG_VERSION >> 8 & 0xff);
stream->print(F("# HELP opendtu_platform Platform info\n"));
stream->print(F("# TYPE opendtu_platform gauge\n"));
stream->printf("opendtu_platform{arch=\"%s\",mac=\"%s\"} 1\n", ESP.getChipModel(), WiFi.macAddress().c_str());
stream->print(F("# HELP opendtu_uptime Uptime in seconds\n"));
stream->print(F("# TYPE opendtu_uptime counter\n"));
stream->printf("opendtu_uptime %lld\n", esp_timer_get_time() / 1000000);
stream->print(F("# HELP opendtu_heap_size System memory size\n"));
stream->print(F("# TYPE opendtu_heap_size gauge\n"));
stream->printf("opendtu_heap_size %zu\n", ESP.getHeapSize());
stream->print(F("# HELP opendtu_free_heap_size System free memory\n"));
stream->print(F("# TYPE opendtu_free_heap_size gauge\n"));
stream->printf("opendtu_free_heap_size %zu\n", ESP.getFreeHeap());
stream->print(F("# HELP wifi_rssi WiFi RSSI\n"));
stream->print(F("# TYPE wifi_rssi gauge\n"));
stream->printf("wifi_rssi %d\n", WiFi.RSSI());
for (uint8_t i = 0; i < Hoymiles.getNumInverters(); i++) {
auto inv = Hoymiles.getInverterByPos(i);
char serial[sizeof(uint64_t) * 8 + 1];
snprintf(serial, sizeof(serial), "%0x%08x",
((uint32_t)((inv->serial() >> 32) & 0xFFFFFFFF)),
((uint32_t)(inv->serial() & 0xFFFFFFFF)));
const char* name = inv->name();
if(i==0) {
stream->print(F("# HELP opendtu_last_update last update from inverter in s\n"));
stream->print(F("# TYPE opendtu_last_update gauge\n"));
}
stream->printf("opendtu_last_update{serial=\"%s\",unit=\"%d\",name=\"%s\"} %d\n",
serial, i, name, inv->Statistics()->getLastUpdate() / 1000);
// Loop all channels
for (uint8_t c = 0; c <= inv->Statistics()->getChannelCount(); c++) {
addField(stream, serial, i, inv, c, FLD_PAC);
addField(stream, serial, i, inv, c, FLD_UAC);
addField(stream, serial, i, inv, c, FLD_IAC);
if (c == 0) {
addField(stream, serial, i, inv, c, FLD_PDC, "PowerDC");
} else {
addField(stream, serial, i, inv, c, FLD_PDC);
}
addField(stream, serial, i, inv, c, FLD_UDC);
addField(stream, serial, i, inv, c, FLD_IDC);
addField(stream, serial, i, inv, c, FLD_YD);
addField(stream, serial, i, inv, c, FLD_YT);
addField(stream, serial, i, inv, c, FLD_F);
addField(stream, serial, i, inv, c, FLD_T);
addField(stream, serial, i, inv, c, FLD_PF);
addField(stream, serial, i, inv, c, FLD_PRA);
addField(stream, serial, i, inv, c, FLD_EFF);
addField(stream, serial, i, inv, c, FLD_IRR);
}
}
stream->addHeader(F("Cache-Control"), F("no-cache"));
stream->addHeader(F("Cache-Control"), F("no-cache"));
request->send(stream);
}
void WebApiPrometheusClass::addField(AsyncResponseStream *stream, const char* serial, uint8_t idx, std::shared_ptr<InverterAbstract> inv, uint8_t channel, uint8_t fieldId, const char* channelName)
{
if (inv->Statistics()->hasChannelFieldValue(channel, fieldId)) {
const char* chanName = (channelName == NULL) ? inv->Statistics()->getChannelFieldName(channel, fieldId) : channelName;
if(idx==0 && channel==0) {
stream->printf("# HELP opendtu_%s in %s\n", chanName, inv->Statistics()->getChannelFieldUnit(channel, fieldId));
stream->printf("# TYPE opendtu_%s gauge\n", chanName);
}
stream->printf("opendtu_%s{serial=\"%s\",unit=\"%d\",name=\"%s\",channel=\"%d\"} %f\n", chanName, serial, idx, inv->name(), channel, inv->Statistics()->getChannelFieldValue(channel, fieldId));
}
}