Here is a sample that implements API with AWS API Gateway integrated Lambda in Go.
Specification
- Endpoint: https://
<API ID>.execute-api.ap-northeast-1.amazonaws.com/<stage>/<Resource> - Http Method: GET
- Parameters:
{
"text": "string"
}
Lambda handler in Go
Define a struct that is used as arguments.
package main
import (
"context"
"github.com/aws/aws-lambda-go/lambda"
"github.com/pkg/errors"
)
// Ref: https://docs.aws.amazon.com/lambda/latest/dg/golang-handler.html
// Receive arguments as struct.
type Event struct {
Text string `json:"text"`
}
func (e *Event) validate() bool {
valid := true
if e.Text == "" {
valid = false
}
return valid
}
// Response
type Response struct {
Message string `json:"message"`
}
// Lambda handler
func HandleRequest(ctx context.Context, event Event) (Response, error) {
resp := Response{}
if !event.validate() {
return resp, errors.Errorf("need text.")
}
// Something to do you want here.
resp.Message = "ok"
return resp, nil
}
// Main
func main() {
lambda.Start(HandleRequest)
}
Integration Request - Mapping Templates
Add values to set to struct.
Here it has set text
#set($allParams = $input.params())
{
"text": "$input.params('text')",
"body-json" : $input.json('$'),
...
}
Response
Here is a response.
{
"message": "ok"
}
I have to write codes more💪
I have to write English more than that🥺
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