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https://github.com/grafana/grafana.git
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1bd9541507
* FrontendService: Add tracing and logging middleware * tests! * middleware tests * context middleware test * revert http_server back to previous version * fix lint * fix test * use http.NotFound instead of custom http handler * use existing tracer for package * use otel/trace.Tracer in request_tracing middleware * tidy up tracing in contextMiddleware * fix 404 test * remove spans from contextMiddleware * comment
42 lines
1.3 KiB
Go
42 lines
1.3 KiB
Go
package frontend
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import (
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"context"
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"net/http"
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"github.com/grafana/grafana/pkg/infra/log"
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"github.com/grafana/grafana/pkg/infra/tracing"
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"github.com/grafana/grafana/pkg/services/contexthandler/ctxkey"
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contextmodel "github.com/grafana/grafana/pkg/services/contexthandler/model"
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"github.com/grafana/grafana/pkg/web"
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)
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// Minimal copy of contextHandler.Middleware for frontend-service
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// frontend-service doesn't handle authentication or know what signed in users are
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func (s *frontendService) contextMiddleware() web.Middleware {
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return func(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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ctx := r.Context()
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reqContext := &contextmodel.ReqContext{
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Context: web.FromContext(ctx),
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Logger: log.New("context"),
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}
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// inject ReqContext in the context
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ctx = context.WithValue(ctx, ctxkey.Key{}, reqContext)
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// Set the context for the http.Request.Context
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// This modifies both r and reqContext.Req since they point to the same value
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*reqContext.Req = *reqContext.Req.WithContext(ctx)
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traceID := tracing.TraceIDFromContext(ctx, false)
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if traceID != "" {
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reqContext.Logger = reqContext.Logger.New("traceID", traceID)
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}
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next.ServeHTTP(w, r.WithContext(ctx))
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})
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}
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}
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