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15c0b25d AP |
1 | package corehandlers |
2 | ||
3 | import ( | |
4 | "os" | |
5 | "runtime" | |
6 | ||
7 | "github.com/aws/aws-sdk-go/aws" | |
8 | "github.com/aws/aws-sdk-go/aws/request" | |
9 | ) | |
10 | ||
11 | // SDKVersionUserAgentHandler is a request handler for adding the SDK Version | |
12 | // to the user agent. | |
13 | var SDKVersionUserAgentHandler = request.NamedHandler{ | |
14 | Name: "core.SDKVersionUserAgentHandler", | |
15 | Fn: request.MakeAddToUserAgentHandler(aws.SDKName, aws.SDKVersion, | |
16 | runtime.Version(), runtime.GOOS, runtime.GOARCH), | |
17 | } | |
18 | ||
19 | const execEnvVar = `AWS_EXECUTION_ENV` | |
20 | const execEnvUAKey = `exec_env` | |
21 | ||
22 | // AddHostExecEnvUserAgentHander is a request handler appending the SDK's | |
23 | // execution environment to the user agent. | |
24 | // | |
25 | // If the environment variable AWS_EXECUTION_ENV is set, its value will be | |
26 | // appended to the user agent string. | |
27 | var AddHostExecEnvUserAgentHander = request.NamedHandler{ | |
28 | Name: "core.AddHostExecEnvUserAgentHander", | |
29 | Fn: func(r *request.Request) { | |
30 | v := os.Getenv(execEnvVar) | |
31 | if len(v) == 0 { | |
32 | return | |
33 | } | |
34 | ||
35 | request.AddToUserAgent(r, execEnvUAKey+"/"+v) | |
36 | }, | |
37 | } |