AWS Lambda for Go
Libraries, samples, and tools to help Go developers develop AWS Lambda functions.
To learn more about writing AWS Lambda functions in Go, go to the official documentation
Getting Started
// main.go
package main
import (
"github.com/aws/aws-lambda-go/lambda"
)
func hello() (string, error) {
return "Hello Ξ»!", nil
}
func main() {
// Make the handler available for Remote Procedure Call by AWS Lambda
lambda.Start(hello)
}
Building your function
Preparing a binary to deploy to AWS Lambda requires that it is compiled for Linux and placed into a .zip file.
For developers on Linux and macOS
# Remember to build your handler executable for Linux!
# When using the `provided.al2` runtime, the handler executable should be named `bootstrap`
GOOS=linux GOARCH=amd64 go build -o bootstrap main.go
zip lambda-handler.zip bootstrap
For developers on Windows
Windows developers may have trouble producing a zip file that marks the binary as executable on Linux. To create a .zip that will work on AWS Lambda, the build-lambda-zip
tool may be helpful.
Get the tool
go.exe install github.com/aws/aws-lambda-go/cmd/build-lambda-zip@latest
Use the tool from your GOPATH
. If you have a default installation of Go, the tool will be in %USERPROFILE%\Go\bin
.
in cmd.exe:
set GOOS=linux
set GOARCH=amd64
set CGO_ENABLED=0
go build -o bootstrap main.go
%USERPROFILE%\Go\bin\build-lambda-zip.exe -o lambda-handler.zip bootstrap
in Powershell:
$env:GOOS = "linux"
$env:GOARCH = "amd64"
$env:CGO_ENABLED = "0"
go build -o bootstrap main.go
~\Go\Bin\build-lambda-zip.exe -o lambda-handler.zip bootstrap
Deploying your functions
To deploy your function, refer to the official documentation for deploying using the AWS CLI, AWS Cloudformation, and AWS SAM.
Event Integrations
The event models can be used to model AWS event sources. The official documentation has detailed walkthroughs.