/
filter.go
79 lines (65 loc) · 2.51 KB
/
filter.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
// Copyright 2020 beego
//
// Licensed 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 opentracing
import (
"context"
"net/http"
opentracingKit "github.com/go-kit/kit/tracing/opentracing"
logKit "github.com/go-kit/log"
"github.com/opentracing/opentracing-go"
"github.com/opentracing/opentracing-go/log"
"github.com/beego/beego/v2/client/httplib"
)
type FilterChainBuilder struct {
// TagURL true will tag span with url
TagURL bool
// CustomSpanFunc users are able to custom their span
CustomSpanFunc func(span opentracing.Span, ctx context.Context,
req *httplib.BeegoHTTPRequest, resp *http.Response, err error)
}
func (builder *FilterChainBuilder) FilterChain(next httplib.Filter) httplib.Filter {
return func(ctx context.Context, req *httplib.BeegoHTTPRequest) (*http.Response, error) {
method := req.GetRequest().Method
operationName := method + "#" + req.GetRequest().URL.String()
span, spanCtx := opentracing.StartSpanFromContext(ctx, operationName)
defer span.Finish()
inject := opentracingKit.ContextToHTTP(opentracing.GlobalTracer(), logKit.NewNopLogger())
inject(spanCtx, req.GetRequest())
resp, err := next(spanCtx, req)
if resp != nil {
span.SetTag("http.status_code", resp.StatusCode)
}
span.SetTag("http.method", method)
span.SetTag("peer.hostname", req.GetRequest().URL.Host)
span.SetTag("http.scheme", req.GetRequest().URL.Scheme)
span.SetTag("span.kind", "client")
span.SetTag("component", "beego")
if builder.TagURL {
span.SetTag("http.url", req.GetRequest().URL.String())
}
span.LogFields(log.String("http.url", req.GetRequest().URL.String()))
if err != nil {
span.SetTag("error", true)
span.LogFields(log.String("message", err.Error()))
} else if resp != nil && !(resp.StatusCode < 300 && resp.StatusCode >= 200) {
span.SetTag("error", true)
}
span.SetTag("peer.address", req.GetRequest().RemoteAddr)
span.SetTag("http.proto", req.GetRequest().Proto)
if builder.CustomSpanFunc != nil {
builder.CustomSpanFunc(span, ctx, req, resp, err)
}
return resp, err
}
}