Allow Prequery analysis

Author: joel-rieke

server/handler.go

@@ -618,7 +618,7 @@ func (h *Handler) errorWrappedDoQuery(
 ) (string, error) {
 	start := time.Now()
 	if h.sel != nil {
-		h.sel.QueryStarted()
+		h.sel.QueryStarted(query)
 	}
 
 	remainder, err := h.doQuery(c, query, mode, bindings, callback)

server/server.go

@@ -30,7 +30,7 @@ import (
 type ServerEventListener interface {
 	ClientConnected()
 	ClientDisconnected()
-	QueryStarted()
+	QueryStarted(query string)
 	QueryCompleted(query string, success bool, duration time.Duration)
 }