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Initiates a multipart upload and returns an upload ID.
Namespace: Amazon.S3.Model
Assembly: AWSSDK.dll
Version: (assembly version)
public class InitiateMultipartUploadRequest : PutWithACLRequest IRequestEvents
The InitiateMultipartUploadRequest type exposes the following members
Name | Description | |
---|---|---|
InitiateMultipartUploadRequest() |
Name | Type | Description | |
---|---|---|---|
BucketName | System.String | The name of the bucketName where the new object will be created, or existing object updated. | |
CannedACL | Amazon.S3.S3CannedACL | A canned access control list (ACL) to apply to the object. Please refer to S3CannedACL for information on S3 Canned ACLs. | |
ContentType | System.String | This is a convenience property for Headers.ContentType. | |
Grants | System.Collections.Generic.List<Amazon.S3.Model.S3Grant> | Gets the access control lists (ACLs) for this request. Please refer to S3Grant for information on S3 Grants. | |
Headers | Amazon.S3.Model.HeadersCollection | The collection of headers for the request. | |
Key | System.String | The key of the object to create or update. | |
Metadata | Amazon.S3.Model.MetadataCollection | The collection of meta data for the request. | |
ServerSideEncryptionCustomerMethod | Amazon.S3.ServerSideEncryptionCustomerMethod | The Server-side encryption algorithm to be used with the customer provided key. | |
ServerSideEncryptionCustomerProvidedKey | System.String |
The base64-encoded encryption key for Amazon S3 to use to encrypt the object
Using the encryption key you provide as part of your request Amazon S3 manages both the encryption, as it writes to disks, and decryption, when you access your objects. Therefore, you don't need to maintain any data encryption code. The only thing you do is manage the encryption keys you provide. When you retrieve an object, you must provide the same encryption key as part of your request. Amazon S3 first verifies the encryption key you provided matches, and then decrypts the object before returning the object data to you. Important: Amazon S3 does not store the encryption key you provide. |
|
ServerSideEncryptionCustomerProvidedKeyMD5 | System.String | The MD5 of the customer encryption key specified in the ServerSideEncryptionCustomerProvidedKey property. The MD5 is base 64 encoded. This field is optional, the SDK will calculate the MD5 if this is not set. | |
ServerSideEncryptionKeyManagementServiceKeyId | System.String | The id of the AWS Key Management Service key that Amazon S3 should use to encrypt and decrypt the object. If a key id is not specified, the default key will be used for encryption and decryption. | |
ServerSideEncryptionMethod | Amazon.S3.ServerSideEncryptionMethod |
Specifies the encryption to be used on the server for the new object. |
|
StorageClass | Amazon.S3.S3StorageClass | StorageClass property for the object. | |
WebsiteRedirectLocation | System.String | If the bucketName is configured as a website, redirects requests for this object to another object in the same bucketName or to an external URL. Amazon S3 stores the value of this header in the object metadata. |
This example shows how to upload 13MB of data using mutlipart upload.
The data is contained in a stream and the upload is done in 3 parts:
5MB, 5MB, then the remainder.
int MB = (int)Math.Pow(2, 20); // Create a client AmazonS3Client client = new AmazonS3Client(); // Define input stream Stream inputStream = Create13MBDataStream(); // Initiate multipart upload InitiateMultipartUploadRequest initRequest = new InitiateMultipartUploadRequest { BucketName = "SampleBucket", Key = "Item1" }; InitiateMultipartUploadResponse initResponse = client.InitiateMultipartUpload(initRequest); // Upload part 1 UploadPartRequest uploadRequest = new UploadPartRequest { BucketName = "SampleBucket", Key = "Item1", UploadId = initResponse.UploadId, PartNumber = 1, PartSize = 5 * MB, InputStream = inputStream }; UploadPartResponse up1Response = client.UploadPart(uploadRequest); // Upload part 2 uploadRequest = new UploadPartRequest { BucketName = "SampleBucket", Key = "Item1", UploadId = initResponse.UploadId, PartNumber = 2, PartSize = 5 * MB, InputStream = inputStream }; UploadPartResponse up2Response = client.UploadPart(uploadRequest); // Upload part 3 uploadRequest = new UploadPartRequest { BucketName = "SampleBucket", Key = "Item1", UploadId = initResponse.UploadId, PartNumber = 3, InputStream = inputStream }; UploadPartResponse up3Response = client.UploadPart(uploadRequest); // List parts for current upload ListPartsRequest listPartRequest = new ListPartsRequest { BucketName = "SampleBucket", Key = "Item1", UploadId = initResponse.UploadId }; ListPartsResponse listPartResponse = client.ListParts(listPartRequest); Debug.Assert(listPartResponse.Parts.Count == 3); // Complete the multipart upload CompleteMultipartUploadRequest compRequest = new CompleteMultipartUploadRequest { BucketName = "SampleBucket", Key = "Item1", UploadId = initResponse.UploadId, PartETags = new List<PartETag> { new PartETag { ETag = up1Response.ETag, PartNumber = 1 }, new PartETag { ETag = up2Response.ETag, PartNumber = 2 }, new PartETag { ETag = up3Response.ETag, PartNumber = 3 } } }; CompleteMultipartUploadResponse compResponse = client.CompleteMultipartUpload(compRequest);
.NET Framework:
Supported in: 4.5, 4.0, 3.5
.NET for Windows Store apps:
Supported in: Windows 8.1, Windows 8
.NET for Windows Phone:
Supported in: Windows Phone 8.1, Windows Phone 8