英文:
Getting requester's IP address in AWS lambda function
问题
我理解了，根据这个问题的答案，我可以通过以下方式获取调用者的 IP 地址：
events['headers']['X-Forwarded-For']
对于 Go 语言，这个信息应该在接受 context.Context 参数的 lambda 函数的上下文中。然而，在文档中我没有看到任何关于请求头的提及。在 Go 的 lambda 函数中有没有获取相同信息的方法呢？
英文:
I understand, from the answer to this question, that I can get the IP address of the caller of a node.js lambda function by doing this:
events['headers']['X-Forwarded-For']
It seems like, for Go, this information should be inside the context.Context for lambda signatures that take it. However, looking at the documentation, I don't see any mention of request headers. Is there a way to get the same information in a Go lambda function?
答案1
得分: 0
在自己进行了一些研究后，我发现我需要将我的 Lambda 函数放在 API Gateway 实例后面，以获取我感兴趣的信息。在这样做之后，我可以像这样修改处理程序：
package main
import (
"context"
"github.com/aws/aws-lambda-go/events"
"github.com/aws/aws-lambda-go/lambda"
)
func LambdaHandler(ctx context.Context, request events.APIGatewayV2HTTPRequest) (int, error) {
// 一些代码
addr := request.RequestContext.HTTP.SourceIP
// 其他一些代码
return 0, nil
}
func main() {
lambda.Start(LambdaHandler)
}
通过这样做，API Gateway 将填充我所需的所有请求元数据，并将其传递给我的 Lambda 函数。请求正文现在包含在 request.Body 中，因此我可以使用 JSON 反序列化或其他编码方法提取该数据。
英文:
After doing some research on my own, I figured out that I needed to put my lambda function behind an API Gateway instance to get the information I was interested in. After doing that, I could modify the handler like this:
package main
import (
"github.com/aws/aws-lambda-go/events"
"github.com/aws/aws-lambda-go/lambda"
)
func LambdaHandler(ctx context.Context, request events.APIGatewayV2HTTPRequest) (int, error) {
// some code
addr := request.RequestContext.HTTP.SourceIP
// some other code
return 0
}
func main() {
lambda.Start(LambdaHandler)
}
By doing this, the API gateway will populate all the request metadata I need and pass that on to my lambda function. The request body is now contained in request.Body so I can extract that data using JSON deserialization or whatever other method my data is encoded as.
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