/
aws-go-sdk-lambda-example-configure-function-for-notification.go
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/
aws-go-sdk-lambda-example-configure-function-for-notification.go
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// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
// snippet-start:[lambda.go.configure_function.complete]
package main
// snippet-start:[lambda.go.configure_function.imports]
import (
"flag"
"fmt"
"os"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/lambda"
)
// snippet-end:[lambda.go.configure_function.imports]
func main() {
// snippet-start:[lambda.go.configure_function.vars]
functionPtr := flag.String("f", "", "The name of the Lambda function")
sourcePtr := flag.String("a", "", "The ARN of the entity invoking the function")
flag.Parse()
if *functionPtr == "" || *sourcePtr == "" {
fmt.Println("You must supply the name of the function and of the entity invoking the function")
flag.PrintDefaults()
os.Exit(1)
}
// snippet-end:[lambda.go.configure_function.vars]
// Initialize a session
// snippet-start:[lambda.go.configure_function.session]
sess := session.Must(session.NewSessionWithOptions(session.Options{
SharedConfigState: session.SharedConfigEnable,
}))
svc := lambda.New(sess)
// snippet-end:[lambda.go.configure_function.session]
// snippet-start:[lambda.go.configure_function.struct]
permArgs := &lambda.AddPermissionInput{
Action: aws.String("lambda:InvokeFunction"),
FunctionName: functionPtr,
Principal: aws.String("s3.amazonaws.com"),
SourceArn: sourcePtr,
StatementId: aws.String("lambda_s3_notification"),
}
// snippet-end:[lambda.go.configure_function.struct]
// snippet-start:[lambda.go.configure_function.add_permission]
result, err := svc.AddPermission(permArgs)
if err != nil {
fmt.Println("Cannot configure function for notifications")
os.Exit(0)
}
fmt.Println(result)
// snippet-end:[lambda.go.configure_function.add_permission]
}
// snippet-end:[lambda.go.configure_function.complete]