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Prometheus API: Only output the channels if they where read at least once

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This commit is contained in:
Thomas Basler 2023-02-26 19:31:37 +01:00
parent c67b3e3cbd
commit 4d18ccf01d
1 changed files with 22 additions and 20 deletions
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4
src/WebApi_prometheus.cpp
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@ -65,7 +65,8 @@ void WebApiPrometheusClass::onPrometheusMetricsGet(AsyncWebServerRequest* reques
stream->printf("opendtu_last_update{serial=\"%s\",unit=\"%d\",name=\"%s\"} %d\n",
serial.c_str(), i, name, inv->Statistics()->getLastUpdate() / 1000);
// Loop all channels
// Loop all channels if Statistics have been updated at least once since DTU boot
if (inv->Statistics()->getLastUpdate() > 0) {
for (auto& t : inv->Statistics()->getChannelTypes()) {
for (auto& c : inv->Statistics()->getChannelsByType(t)) {
addField(stream, serial, i, inv, t, c, FLD_PAC);
@ -89,6 +90,7 @@ void WebApiPrometheusClass::onPrometheusMetricsGet(AsyncWebServerRequest* reques
}
}
}
}
stream->addHeader(F("Cache-Control"), F("no-cache"));
request->send(stream);