Walkthrough: Konfigurieren eines Buckets für Benachrichtigungen (SNS-Thema oder SQS-Warteschlange)

Das folgende C#-Codebeispiel zeigt ein vollständiges Listing, das einem Bucket eine Benachrichtigungskonfiguration hinzufügt. Sie müssen den Code aktualisieren und Ihren Bucket-Namen und den ARN des SNS-Themas angeben. Informationen zum Einrichten und Ausführen der Codebeispiele finden Sie unter Getting Started with the AWS SDK for .NET im AWS SDK for .NET Developer Guide.

using Amazon;
using Amazon.S3;
using Amazon.S3.Model;
using System;
using System.Collections.Generic;
using System.Threading.Tasks;

namespace Amazon.DocSamples.S3
{
    class EnableNotificationsTest
    {
        private const string bucketName = "*** bucket name ***";
        private const string snsTopic = "*** SNS topic ARN ***";
        private const string sqsQueue = "*** SQS topic ARN ***";
        // Specify your bucket region (an example region is shown).
        private static readonly RegionEndpoint bucketRegion = RegionEndpoint.USWest2;
        private static IAmazonS3 client;

        public static void Main()
        {
            client = new AmazonS3Client(bucketRegion);
            EnableNotificationAsync().Wait();
        }

        static async Task EnableNotificationAsync()
        {
            try
            {
               PutBucketNotificationRequest request = new PutBucketNotificationRequest
                {
                    BucketName = bucketName
                };

                TopicConfiguration c = new TopicConfiguration
                {
                    Events = new List<EventType> { EventType.ObjectCreatedCopy },
                    Topic = snsTopic
                };
                request.TopicConfigurations = new List<TopicConfiguration>();
                request.TopicConfigurations.Add(c);
                request.QueueConfigurations = new List<QueueConfiguration>();
                request.QueueConfigurations.Add(new QueueConfiguration()
                {
                    Events = new List<EventType> { EventType.ObjectCreatedPut },
                    Queue = sqsQueue
                });
                
                PutBucketNotificationResponse response = await client.PutBucketNotificationAsync(request);
            }
            catch (AmazonS3Exception e)
            {
                Console.WriteLine("Error encountered on server. Message:'{0}' ", e.Message);
            }
            catch (Exception e)
            {
                Console.WriteLine("Unknown error encountered on server. Message:'{0}' ", e.Message);
            }
        }
    }
}

Die folgende Beispiel veranschaulicht, wie Sie einem Bucket eine Benachrichtigungskonfiguration hinzufügen. Anweisungen zum Erstellen und Testen eines funktionierenden Beispiels finden Sie unter Erste Schritte im AWS SDK für Java Entwicklerhandbuch.

import com.amazonaws.AmazonServiceException;
import com.amazonaws.SdkClientException;
import com.amazonaws.auth.profile.ProfileCredentialsProvider;
import com.amazonaws.regions.Regions;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.AmazonS3ClientBuilder;
import com.amazonaws.services.s3.model.*;

import java.io.IOException;
import java.util.EnumSet;

public class EnableNotificationOnABucket {

    public static void main(String[] args) throws IOException {
        String bucketName = "*** Bucket name ***";
        Regions clientRegion = Regions.DEFAULT_REGION;
        String snsTopicARN = "*** SNS Topic ARN ***";
        String sqsQueueARN = "*** SQS Queue ARN ***";

        try {
            AmazonS3 s3Client = AmazonS3ClientBuilder.standard()
                    .withCredentials(new ProfileCredentialsProvider())
                    .withRegion(clientRegion)
                    .build();
            BucketNotificationConfiguration notificationConfiguration = new BucketNotificationConfiguration();

            // Add an SNS topic notification.
            notificationConfiguration.addConfiguration("snsTopicConfig",
                    new TopicConfiguration(snsTopicARN, EnumSet.of(S3Event.ObjectCreated)));

            // Add an SQS queue notification.
            notificationConfiguration.addConfiguration("sqsQueueConfig",
                    new QueueConfiguration(sqsQueueARN, EnumSet.of(S3Event.ObjectCreated)));

            // Create the notification configuration request and set the bucket notification
            // configuration.
            SetBucketNotificationConfigurationRequest request = new SetBucketNotificationConfigurationRequest(
                    bucketName, notificationConfiguration);
            s3Client.setBucketNotificationConfiguration(request);
        } catch (AmazonServiceException e) {
            // The call was transmitted successfully, but Amazon S3 couldn't process
            // it, so it returned an error response.
            e.printStackTrace();
        } catch (SdkClientException e) {
            // Amazon S3 couldn't be contacted for a response, or the client
            // couldn't parse the response from Amazon S3.
            e.printStackTrace();
        }
    }
}