82 lines
2.4 KiB
Go
82 lines
2.4 KiB
Go
// This provides a shim between HTTP GET requests sent
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// by ambient devices, and the providers that may be
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// configured (awn, wunderground)
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package ambient
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import (
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"context"
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"fmt"
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"net/http"
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"gitea.libretechconsulting.com/rmcguire/go-app/pkg/otel"
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"github.com/rs/zerolog"
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"go.opentelemetry.io/otel/attribute"
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"go.opentelemetry.io/otel/codes"
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"gitea.libretechconsulting.com/rmcguire/ambient-weather-local-exporter/pkg/provider"
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"gitea.libretechconsulting.com/rmcguire/ambient-weather-local-exporter/pkg/provider/awn"
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"gitea.libretechconsulting.com/rmcguire/ambient-weather-local-exporter/pkg/provider/wunderground"
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)
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// These providers implement support for the update sent
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// when either "AmbientWeather" or "Wunderground" are selected
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// in the "Custom" section of the AWNet app, or the web UI
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// of an Ambient WeatherHub
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var (
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awnProvider = &awn.AWNProvider{}
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wuProvider = &wunderground.WUProvider{}
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)
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func GetAWNHandlerFunc(appCtx context.Context) func(http.ResponseWriter, *http.Request) {
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return func(w http.ResponseWriter, r *http.Request) {
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handleProviderRequest(appCtx, awnProvider, w, r)
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}
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}
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func GetWundergroundHandlerFunc(appCtx context.Context) func(http.ResponseWriter, *http.Request) {
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return func(w http.ResponseWriter, r *http.Request) {
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handleProviderRequest(appCtx, wuProvider, w, r)
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}
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}
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// Takes an HTTP requests and convers it to a
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// stable type. Enrich is called on the type to complete
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// any missing fields as the two providers supported by Ambient
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// devices (awn/wunderground) produce different fields
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func handleProviderRequest(
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appCtx context.Context,
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p provider.AmbientProvider,
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w http.ResponseWriter,
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r *http.Request,
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) {
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l := zerolog.Ctx(appCtx)
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tracer := otel.GetTracer(appCtx, p.Name()+".http.handler")
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ctx, span := tracer.Start(r.Context(), p.Name()+".update")
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span.SetAttributes(attribute.String("provider", p.Name()))
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defer span.End()
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l.Trace().Str("p", p.Name()).
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Any("query", r.URL.Query()).Send()
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// Convert to WeatherUpdate
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update, err := p.ReqToWeather(ctx, r)
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if err != nil {
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l.Err(err).Send()
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span.RecordError(err)
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span.SetStatus(codes.Error,
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fmt.Sprintf("failed to handle %s update: %s",
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p.Name(), err.Error()))
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w.WriteHeader(http.StatusInternalServerError)
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w.Write([]byte(err.Error()))
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}
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// Calculate any fields that may be missing
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// such as dew point and wind chill
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update.Enrich()
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l.Trace().Any("update", update).Send()
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w.Write([]byte("ok"))
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}
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