TUN-2243: Revert "STOR-519: Add db-connect, a SQL over HTTPS server"

This reverts commit 5da2109811.

vendor/github.com/mitchellh/go-server-timing/middleware.go

@@ -1,84 +0,0 @@
-package servertiming
-
-import (
-	"net/http"
-
-	"github.com/felixge/httpsnoop"
-)
-
-// MiddlewareOpts are options for the Middleware.
-type MiddlewareOpts struct {
-	// Nothing currently, reserved for the future.
-}
-
-// Middleware wraps an http.Handler and provides a *Header in the request
-// context that can be used to set Server-Timing headers. The *Header can be
-// extracted from the context using FromContext.
-//
-// The options supplied to this can be nil to use defaults.
-//
-// The Server-Timing header will be written when the status is written
-// only if there are non-empty number of metrics.
-//
-// To control when Server-Timing is sent, the easiest approach is to wrap
-// this middleware and only call it if the request should send server timings.
-// For examples, see the README.
-func Middleware(next http.Handler, _ *MiddlewareOpts) http.Handler {
-	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		var (
-			// Create the Server-Timing headers struct
-			h Header
-			// Remember if the timing header were added to the response headers
-			headerWritten bool
-		)
-
-		// This places the *Header value into the request context. This
-		// can be extracted again with FromContext.
-		r = r.WithContext(NewContext(r.Context(), &h))
-
-		// Get the header map. This is a reference and shouldn't change.
-		headers := w.Header()
-
-		// Hook the response writer we pass upstream so we can modify headers
-		// before they write them to the wire, but after we know what status
-		// they are writing.
-		hooks := httpsnoop.Hooks{
-			WriteHeader: func(original httpsnoop.WriteHeaderFunc) httpsnoop.WriteHeaderFunc {
-				// Return a function with same signature as
-				// http.ResponseWriter.WriteHeader to be called in it's place
-				return func(code int) {
-					// Write the headers
-					writeHeader(headers, &h)
-
-					// Remember that headers were written
-					headerWritten = true
-
-					// Call the original WriteHeader function
-					original(code)
-				}
-			},
-		}
-
-		w = httpsnoop.Wrap(w, hooks)
-		next.ServeHTTP(w, r)
-
-		// In case that next did not called WriteHeader function, add timing header to the response headers
-		if !headerWritten {
-			writeHeader(headers, &h)
-		}
-	})
-}
-
-func writeHeader(headers http.Header, h *Header) {
-	// Grab the lock just in case there is any ongoing concurrency that
-	// still has a reference and may be modifying the value.
-	h.Lock()
-	defer h.Unlock()
-
-	// If there are no metrics set, do nothing
-	if len(h.Metrics) == 0 {
-		return
-	}
-
-	headers.Set(HeaderKey, h.String())
-}