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
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
|
// Copyright 2020 New Relic Corporation. All rights reserved.
// SPDX-License-Identifier: Apache-2.0
package nrlambda
import (
"net/http"
"net/url"
"strings"
"github.com/aws/aws-lambda-go/events"
newrelic "github.com/newrelic/go-agent"
)
func getEventSourceARN(event interface{}) string {
switch v := event.(type) {
case events.KinesisFirehoseEvent:
return v.DeliveryStreamArn
case events.KinesisEvent:
if len(v.Records) > 0 {
return v.Records[0].EventSourceArn
}
case events.CodeCommitEvent:
if len(v.Records) > 0 {
return v.Records[0].EventSourceARN
}
case events.DynamoDBEvent:
if len(v.Records) > 0 {
return v.Records[0].EventSourceArn
}
case events.SQSEvent:
if len(v.Records) > 0 {
return v.Records[0].EventSourceARN
}
case events.S3Event:
if len(v.Records) > 0 {
return v.Records[0].S3.Bucket.Arn
}
case events.SNSEvent:
if len(v.Records) > 0 {
return v.Records[0].EventSubscriptionArn
}
}
return ""
}
type webRequest struct {
header http.Header
method string
u *url.URL
transport newrelic.TransportType
}
func (r webRequest) Header() http.Header { return r.header }
func (r webRequest) URL() *url.URL { return r.u }
func (r webRequest) Method() string { return r.method }
func (r webRequest) Transport() newrelic.TransportType { return r.transport }
func eventWebRequest(event interface{}) newrelic.WebRequest {
var path string
var request webRequest
var headers map[string]string
switch r := event.(type) {
case events.APIGatewayProxyRequest:
request.method = r.HTTPMethod
path = r.Path
headers = r.Headers
case events.ALBTargetGroupRequest:
// https://docs.aws.amazon.com/elasticloadbalancing/latest/application/lambda-functions.html#receive-event-from-load-balancer
request.method = r.HTTPMethod
path = r.Path
headers = r.Headers
default:
return nil
}
request.header = make(http.Header, len(headers))
for k, v := range headers {
request.header.Set(k, v)
}
var host string
if port := request.header.Get("X-Forwarded-Port"); port != "" {
host = ":" + port
}
request.u = &url.URL{
Path: path,
Host: host,
}
proto := strings.ToLower(request.header.Get("X-Forwarded-Proto"))
switch proto {
case "https":
request.transport = newrelic.TransportHTTPS
case "http":
request.transport = newrelic.TransportHTTP
default:
request.transport = newrelic.TransportUnknown
}
return request
}
func eventResponse(event interface{}) *response {
var code int
var headers map[string]string
switch r := event.(type) {
case events.APIGatewayProxyResponse:
code = r.StatusCode
headers = r.Headers
case events.ALBTargetGroupResponse:
code = r.StatusCode
headers = r.Headers
default:
return nil
}
hdr := make(http.Header, len(headers))
for k, v := range headers {
hdr.Add(k, v)
}
return &response{
code: code,
header: hdr,
}
}
|
