Gestion des balises d’objets

L’exemple suivant montre comment utiliser le kit AWS SDK for Java pour définir des balises pour un nouvel objet et récupérer ou remplacer des balises pour un objet existant. Pour plus d’informations sur le balisage des objets, consultez Catégorisation de votre stockage à l’aide de balises. Pour obtenir les instructions pour la création et le test d’un exemple pratique, consultez Démarrer dans le Guide du développeur AWS SDK for Java.

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.File;
import java.util.ArrayList;
import java.util.List;

public class ManagingObjectTags {

    public static void main(String[] args) {
        Regions clientRegion = Regions.DEFAULT_REGION;
        String bucketName = "*** Bucket name ***";
        String keyName = "*** Object key ***";
        String filePath = "*** File path ***";

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

            // Create an object, add two new tags, and upload the object to Amazon S3.
            PutObjectRequest putRequest = new PutObjectRequest(bucketName, keyName, new File(filePath));
            List<Tag> tags = new ArrayList<Tag>();
            tags.add(new Tag("Tag 1", "This is tag 1"));
            tags.add(new Tag("Tag 2", "This is tag 2"));
            putRequest.setTagging(new ObjectTagging(tags));
            PutObjectResult putResult = s3Client.putObject(putRequest);

            // Retrieve the object's tags.
            GetObjectTaggingRequest getTaggingRequest = new GetObjectTaggingRequest(bucketName, keyName);
            GetObjectTaggingResult getTagsResult = s3Client.getObjectTagging(getTaggingRequest);

            // Replace the object's tags with two new tags.
            List<Tag> newTags = new ArrayList<Tag>();
            newTags.add(new Tag("Tag 3", "This is tag 3"));
            newTags.add(new Tag("Tag 4", "This is tag 4"));
            s3Client.setObjectTagging(new SetObjectTaggingRequest(bucketName, keyName, new ObjectTagging(newTags)));
        } 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();
        }
    }
}

L’exemple suivant montre comment utiliser le kit AWS SDK for .NET pour définir les balises pour un nouvel objet, et récupérer ou remplacer les balises pour un objet existant. Pour plus d’informations sur le balisage des objets, consultez Catégorisation de votre stockage à l’aide de balises.

Pour de plus amples informations sur la configuration et l’exécution des exemples de code, consultez Mise en route avec le kit SDK AWS pour .NET dans le Guide du développeur SDK AWS pour .NET.

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

namespace Amazon.DocSamples.S3
{
    public class ObjectTagsTest
    {
        private const string bucketName = "*** bucket name ***";
        private const string keyName = "*** key name for the new object ***";
        private const string filePath = @"*** file path ***";
        // 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);
            PutObjectWithTagsTestAsync().Wait();
        }

        static async Task PutObjectWithTagsTestAsync()
        {
            try
            {
                // 1. Put an object with tags.
                var putRequest = new PutObjectRequest
                {
                    BucketName = bucketName,
                    Key = keyName,
                    FilePath = filePath,
                    TagSet = new List<Tag>{
                        new Tag { Key = "Keyx1", Value = "Value1"},
                        new Tag { Key = "Keyx2", Value = "Value2" }
                    }
                };

                PutObjectResponse response = await client.PutObjectAsync(putRequest);
                // 2. Retrieve the object's tags.
                GetObjectTaggingRequest getTagsRequest = new GetObjectTaggingRequest
                {
                    BucketName = bucketName,
                    Key = keyName
                };

                GetObjectTaggingResponse objectTags = await client.GetObjectTaggingAsync(getTagsRequest);
                for (int i = 0; i < objectTags.Tagging.Count; i++)
                    Console.WriteLine("Key: {0}, Value: {1}", objectTags.Tagging[i].Key, objectTags.Tagging[i].Value);


                // 3. Replace the tagset.

                Tagging newTagSet = new Tagging();
                newTagSet.TagSet = new List<Tag>{
                    new Tag { Key = "Key3", Value = "Value3"},
                    new Tag { Key = "Key4", Value = "Value4" }
                };


                PutObjectTaggingRequest putObjTagsRequest = new PutObjectTaggingRequest()
                {
                    BucketName = bucketName,
                    Key = keyName,
                    Tagging = newTagSet
                };
                PutObjectTaggingResponse response2 = await client.PutObjectTaggingAsync(putObjTagsRequest);

                // 4. Retrieve the object's tags.
                GetObjectTaggingRequest getTagsRequest2 = new GetObjectTaggingRequest();
                getTagsRequest2.BucketName = bucketName;
                getTagsRequest2.Key = keyName;
                GetObjectTaggingResponse objectTags2 = await client.GetObjectTaggingAsync(getTagsRequest2);
                for (int i = 0; i < objectTags2.Tagging.Count; i++)
                    Console.WriteLine("Key: {0}, Value: {1}", objectTags2.Tagging[i].Key, objectTags2.Tagging[i].Value);

            }
            catch (AmazonS3Exception e)
            {
                Console.WriteLine(
                        "Error encountered ***. Message:'{0}' when writing an object"
                        , e.Message);
            }
            catch (Exception e)
            {
                Console.WriteLine(
                    "Encountered an error. Message:'{0}' when writing an object"
                    , e.Message);
            }
        }
    }
}