Add request path to the current request Context

This allows us to include it in every log line
we emit in Workhorse.

workhorse/internal/requests/middleware.go

+package requests
+
+import (
+	"context"
+	"net/http"
+)
+
+type PathKey string
+
+func WithRequestPathMiddleware(h http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		h.ServeHTTP(w, r.WithContext(context.WithValue(r.Context(), PathKey("path"), r.URL.Path)))
+	})
+}

workhorse/internal/upload/destination/destination.go

@@ -17,6 +17,7 @@ import (
 
 	"gitlab.com/gitlab-org/labkit/log"
 
+	"gitlab.com/gitlab-org/gitlab/workhorse/internal/requests"
 	"gitlab.com/gitlab-org/gitlab/workhorse/internal/secret"
 	"gitlab.com/gitlab-org/gitlab/workhorse/internal/upload/destination/filestore"
 	"gitlab.com/gitlab-org/gitlab/workhorse/internal/upload/destination/objectstore"
@@ -194,6 +195,7 @@ func Upload(ctx context.Context, reader io.Reader, size int64, opts *UploadOpts)
 	}
 
 	logger := log.WithContextFields(ctx, log.Fields{
+		"path":             ctx.Value(requests.PathKey("path")),
 		"copied_bytes":     fh.Size,
 		"is_local":         opts.IsLocal(),
 		"is_multipart":     opts.IsMultipart(),

workhorse/internal/upstream/routes.go

@@ -23,6 +23,7 @@ import (
 	proxypkg "gitlab.com/gitlab-org/gitlab/workhorse/internal/proxy"
 	"gitlab.com/gitlab-org/gitlab/workhorse/internal/queueing"
 	"gitlab.com/gitlab-org/gitlab/workhorse/internal/redis"
+	"gitlab.com/gitlab-org/gitlab/workhorse/internal/requests"
 	"gitlab.com/gitlab-org/gitlab/workhorse/internal/secret"
 	"gitlab.com/gitlab-org/gitlab/workhorse/internal/senddata"
 	"gitlab.com/gitlab-org/gitlab/workhorse/internal/sendfile"
@@ -136,6 +137,7 @@ func (u *upstream) route(method, regexpStr string, handler http.Handler, opts ..
 		// Add distributed tracing
 		handler = tracing.Handler(handler, tracing.WithRouteIdentifier(regexpStr))
 	}
+	handler = requests.WithRequestPathMiddleware(handler)
 
 	return routeEntry{
 		method:   method,

workhorse/tools.go

-//+build tools
+//go:build tools
+// +build tools
 
 package main