| // Licensed to Apache Software Foundation (ASF) under one or more contributor |
| // license agreements. See the NOTICE file distributed with |
| // this work for additional information regarding copyright |
| // ownership. Apache Software Foundation (ASF) licenses this file to you under |
| // the Apache License, Version 2.0 (the "License"); you may |
| // not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| |
| package mux |
| |
| import ( |
| "net/http" |
| |
| "github.com/apache/skywalking-go/plugins/core/operator" |
| "github.com/apache/skywalking-go/plugins/core/tracing" |
| ) |
| |
| type MatchInterceptor struct { |
| } |
| |
| func (n *MatchInterceptor) BeforeInvoke(invocation operator.Invocation) error { |
| return nil |
| } |
| |
| func (n *MatchInterceptor) AfterInvoke(invocation operator.Invocation, results ...interface{}) error { |
| // only process with matched route |
| if matched, ok := results[0].(bool); !ok || !matched { |
| return nil |
| } |
| match, ok := invocation.Args()[1].(*RouteMatch) |
| req := invocation.Args()[0].(*http.Request) |
| if !ok || match == nil || match.Route == nil || req == nil { |
| return nil |
| } |
| |
| span := tracing.ActiveSpan() |
| if span == nil { |
| return nil |
| } |
| |
| // find matched template |
| var routePrefix, routePath string |
| for _, matcher := range match.Route.matchers { |
| if regexp, ok := matcher.(*routeRegexp); ok && regexp != nil { |
| if regexp.regexpType == 2 { |
| routePrefix = regexp.template |
| } else if regexp.regexpType == 0 { |
| routePath = regexp.template |
| } |
| } |
| } |
| |
| opName := routePrefix |
| if routePath != "" { |
| opName = routePath |
| } |
| |
| // re-set the operation name if route path/prefix not empty |
| if opName != "" { |
| span.SetOperationName(req.Method + ":" + opName) |
| } |
| |
| return nil |
| } |