vendor/github.com/aws/aws-sdk-go/aws/corehandlers/user_agent.go

   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 }