Uploading an Object - Resumable (SDK for Python)

bucketName

str

Yes

Explanation:

Bucket name

Restrictions:

• A bucket name must be unique across all accounts and regions.
• A bucket name:
  • Must be 3 to 63 characters long and start with a digit or letter. Lowercase letters, digits, hyphens (-), and periods (.) are allowed.
  • Cannot be formatted as an IP address.
  • Cannot start or end with a hyphen (-) or period (.).
  • Cannot contain two consecutive periods (..), for example, my..bucket.
  • Cannot contain periods (.) and hyphens (-) adjacent to each other, for example, my-.bucket or my.-bucket.
• If you repeatedly create buckets of the same name in the same region, no error will be reported and the bucket properties comply with those set in the first creation request.

Default value:

None

objectKey

str

Yes

Explanation:

Object name. An object is uniquely identified by an object name in a bucket. An object name is a complete path that does not contain the bucket name.

For example, if the address for accessing the object is examplebucket.obs.eu-west-101.myhuaweicloud.eu/folder/test.txt, the object name is folder/test.txt.

Value range:

The value must contain 1 to 1,024 characters.

Default value:

None

uploadFile

str

Yes

Explanation:

Complete path of the local file to be uploaded, for example, aa/bb.txt.

Default value:

None

partSize

int

No

Explanation:

Part size

Value range:

The value ranges from 100 KB to 5 GB, in bytes.

Default value:

9 MB

taskNum

int

No

Explanation:

Maximum number of parts that can be uploaded concurrently

Value range:

1~10000

Default value:

1, indicating concurrent uploads are not used.

enableCheckpoint

bool

No

Explanation:

Whether to enable the resumable upload mode

Value range:

True: The resumable upload mode is enabled.

False: The resumable upload mode is disabled.

Default value:

False

checkpointFile

str

No

Explanation:

Address of a file generated for recording the progress of a resumable upload. The file contains the information about parts and the upload progress.

Restrictions:

This parameter is valid only for resumable uploads.

Default value:

If this parameter is left blank, the progress file will be in the same directory as the local file to be uploaded.

checkSum

bool

No

Explanation:

Whether to verify the file to upload. If this parameter is enabled, before each task restarts, the system verifies whether the file to upload is the one used during task initialization.

Value range:

True: The file to upload is verified.

False: The file to upload is not verified.

Default value:

False

metadata

dict

No

Explanation:

Custom metadata of the object to be uploaded. You can add a header starting with x-obs-meta- in the request to define metadata. The custom metadata will be returned in the response when you retrieve the object or query the object metadata.

Restrictions:

• The custom metadata cannot exceed 8 KB. To measure the custom metadata, sum the number of bytes in the UTF-8 encoding of each key and value.
• The custom metadata keys are case insensitive, but are stored in lowercase in OBS. The key values are case sensitive.
• Both custom metadata keys and their values must conform to US-ASCII standards. If non-ASCII or unrecognizable characters are required, they must be encoded or decoded in URL or Base64 on the client, because the server does not perform such operations.

Default value:

None

progressCallback

callable

No

Explanation:

Callback function for obtaining the upload progress

Default value:

None

headers

UploadFileHeader

No

Explanation:

Headers in the request used for configuring the storage class, redundancy policy, and other basic information about the object

Value range:

See Table 2.

Default value:

None

isAttachCrc64

bool

No

Explanation:

Whether to automatically calculate the CRC64 value of the data to be uploaded.

Restrictions:

This parameter is not supported for POSIX or SFS objects.

Value range:

• True: The SDK calculates CRC64 and submits it to the server for verification.
• False: CRC64 is not calculated.

Default value:

False

acl

str

No

Explanation:

Pre-defined access policy specified during object creation. For details about the ACL, see ACLs.

Value range:

See Table 3.

Default value:

None

location

str

No

Explanation:

If the bucket is configured with website hosting, the request for obtaining the object can be redirected to another object in the bucket or an external URL.

The request is redirected to object anotherPage.html in the same bucket:

location:/anotherPage.html

The request is redirected to an external URL http://www.example.com/:

location:http://www.example.com/

OBS obtains the specified value from the header and stores it in the object metadata location.

Restrictions:

• The value must start with a slash (/), http://, or https:// and cannot exceed 2 KB.
• OBS only supports redirection for objects in the root directory of a bucket.

Default value:

None

contentType

str

No

Explanation:

MIME type of the file to be uploaded. MIME type is a standard way of describing a data type and is used by the browser to decide how to display data.

Value range:

See What Is Content-Type (MIME)? (Python SDK)

Default value:

If you do not specify contentType when uploading an object, the SDK determines the object type based on the suffix of the specified object name and automatically assigns a value to contentType.

sseHeader

SseCHeader

or

SseKmsHeader

No

Explanation:

Server-side encryption header

Default value:

None

storageClass

str

No

Explanation:

Storage class of the object

Value range:

For details about the available storage classes, see Table 4.

Default value:

None

successActionRedirect

str

No

Explanation:

Address (URL) to which a successfully answered request is redirected

• If the value is valid and the request is successful, OBS returns status code 303. Location in the returned results contains SuccessActionRedirect as well as the bucket name, object name, and object ETag.
• If the value is invalid, OBS ignores this parameter. In such case, Location in the returned results indicates the object address, and OBS returns a status code based on whether the operation succeeds or fails.

Default value:

None

extensionGrants

list of ExtensionGrant

No

Explanation:

List of the extended permissions for the object to be uploaded

Value range:

See Table 7.

Default value:

None

expires

int

No

Explanation:

Expiration time of the object (calculated from the latest modification time of the object). Expired objects are automatically deleted.

Restrictions:

This parameter can be configured only when uploading the object. It cannot be modified by calling a metadata modification API.

Value range:

An integer greater than or equal to 0, in days

Default value:

None

HeadPermission.PRIVATE

private

Private read/write

A bucket or object can only be accessed by its owner.

HeadPermission.PUBLIC_READ

public-read

Public read and private write

If this permission is granted on a bucket, anyone can read the object list, multipart uploads, metadata, and object versions in the bucket.

If it is granted on an object, anyone can read the content and metadata of the object.

HeadPermission.PUBLIC_READ_WRITE

public-read-write

Public read/write

If this permission is granted on a bucket, anyone can read the object list, multipart tasks, metadata, and object versions in the bucket, and can upload or delete objects, initiate multipart upload tasks, upload parts, assemble parts, copy parts, and abort multipart upload tasks.

If it is granted on an object, anyone can read the content and metadata of the object.

HeadPermission.PUBLIC_READ_DELIVERED

public-read-delivered

Public read on a bucket as well as objects in the bucket

If this permission is granted on a bucket, anyone can read the object list, multipart tasks, metadata, and object versions, and read the content and metadata of objects in the bucket.

HeadPermission.PUBLIC_READ_WRITE_DELIVERED

public-read-write-delivered

Public read/write on a bucket as well as objects in the bucket

If this permission is granted on a bucket, anyone can read the object list, multipart uploads, metadata, and object versions in the bucket, and can upload or delete objects, initiate multipart upload tasks, upload parts, assemble parts, copy parts, and abort multipart uploads. They can also read the content and metadata of objects in the bucket.

HeadPermission.BUCKET_OWNER_FULL_CONTROL

public-read-write-delivered

If this permission is granted on an object, only the bucket and object owners have the full control over the object. By default, if you upload an object to a bucket of any other user, the bucket owner does not have the permissions on your object. After you grant this policy to the bucket owner, the bucket owner can have full control over your object.

STANDARD

Standard storage class

Explanation:

Features low access latency and high throughput and is used for storing massive, frequently accessed (multiple times a month) or small objects (< 1 MB) requiring quick response.

WARM

Infrequent Access storage class

Explanation:

Used for storing data that is semi-frequently accessed (fewer than 12 times a year) but is instantly available when needed.

COLD

Archive storage class

Explanation:

Used for storing rarely accessed (once a year) data.

encryption

str

Yes

Explanation:

SSE-C used for encrypting objects

Value range:

AES256

Default value:

None

key

str

Yes

Explanation:

Key used in SSE-C encryption. It corresponds to the encryption method. For example, if encryption is set to AES256, the key is calculated using the AES-256 algorithm.

Value range:

The value must contain 32 characters.

Default value:

None

encryption

str

Yes

Explanation:

SSE-KMS used for encrypting objects

Value range:

kms

Default value:

None

key

str

No

Explanation:

Master key used in SSE-KMS

Value range:

The following two formats are supported:

• regionID:domainID:key/key_id
• key_id

In the preceding formats:

• regionID indicates the ID of the region where the key is used.
• domainID indicates the ID of the account that the key is for. To obtain it, see How Do I Get My Account ID and IAM User ID? (SDK for Python)
• key_id indicates the ID of the key created on Data Encryption Workshop (DEW).

Default value:

• If this parameter is not specified, the default master key will be used.
• If there is no such a default master key, OBS will create one and use it by default.

granteeId

str

No

Explanation:

Account (domain) ID of the grantee

Value range:

To obtain the account ID, see How Do I Get My Account ID and IAM User ID? (SDK for Python)

Default value:

None

permission

str

No

Explanation:

Granted permissions

Default value:

None

GetResult

Explanation:

SDK common results

status

int

Explanation:

HTTP status code

Value range:

A status code is a group of digits ranging from 2xx (indicating successes) to 4xx or 5xx (indicating errors). It indicates the status of a response. For more information, see Status Code.

Default value:

None

reason

str

Explanation:

Reason description.

Default value:

None

errorCode

str

Explanation:

Error code returned by the OBS server. If the value of status is less than 300, this parameter is left blank.

Default value:

None

errorMessage

str

Explanation:

Error message returned by the OBS server. If the value of status is less than 300, this parameter is left blank.

Default value:

None

requestId

str

Explanation:

Request ID returned by the OBS server

Default value:

None

indicator

str

Explanation:

Error indicator returned by the OBS server.

Default value:

None

hostId

str

Explanation:

Requested server ID. If the value of status is less than 300, this parameter is left blank.

Default value:

None

resource

str

Explanation:

Error source (a bucket or an object). If the value of status is less than 300, this parameter is left blank.

Default value:

None

header

list

Explanation:

Response header list, composed of tuples. Each tuple consists of two elements, respectively corresponding to the key and value of a response header.

Default value:

None

body

object

Explanation:

Result content returned after the operation is successful. If the value of status is larger than 300, this parameter is left blank. The value varies with the API being called. For details, see Bucket-Related APIs (SDK for Python) and Object-Related APIs (SDK for Python).

Default value:

None

CompleteMultipartUploadResponse

Explanation:

Response to the part assembling. For details, see Table 12.

etag

str

Explanation:

The ETag that uniquely identifies the object after its parts were assembled, calculated based on the ETag of each part.

Restrictions:

If an object is encrypted using server-side encryption, the ETag is not the MD5 value of the object.

Value range:

The value must contain 32 characters.

Default value:

None

crc64

str

Explanation:

A 64-bit CRC value calculated based on the ECMA-182 standard. It uniquely identifies an object and can be used to check the integrity of the object content. If an object has different CRC64 values when being uploaded and downloaded, its content has been changed. CRC64 reflects changes to the contents of the object, not its metadata.

Restrictions:

• This parameter is returned when the CRC64 value was verified for the uploaded object, or when the CRC64 feature has been enabled for the bucket.
• This parameter is not supported for POSIX or SFS objects.

Value range:

A 64-bit CRC value calculated based on the ECMA-182 standard.

Default value:

None

bucket

str

Explanation:

Bucket in which parts are assembled

Restrictions:

• A bucket name must be unique across all accounts and regions.
• A bucket name:
  • Must be 3 to 63 characters long and start with a digit or letter. Lowercase letters, digits, hyphens (-), and periods (.) are allowed.
  • Cannot be formatted as an IP address.
  • Cannot start or end with a hyphen (-) or period (.).
  • Cannot contain two consecutive periods (..), for example, my..bucket.
  • Cannot contain periods (.) and hyphens (-) adjacent to each other, for example, my-.bucket or my.-bucket.
• If you repeatedly create buckets of the same name in the same region, no error will be reported and the bucket attributes comply with those set in the first creation request.

Default value:

None

key

str

Explanation:

Object name obtained after part assembling.

An object is uniquely identified by an object name in a bucket. An object name is a complete path that does not contain the bucket name.

For example, if the address for accessing the object is examplebucket.obs.eu-west-101.myhuaweicloud.eu/folder/test.txt, the object name is folder/test.txt.

Value range:

The value must contain 1 to 1,024 characters.

Default value:

None

location

str

Explanation:

URL of the generated object after part assembling

Example: https://example-Bucket.obs.regions.myhuaweicloud.com/example-Object

Default value:

None

versionId

str

Explanation:

Version ID of the object obtained after part assembling

Value range:

The value must contain 32 characters.

Default value:

None

crc64

str

Explanation:

A 64-bit CRC value calculated based on the ECMA-182 standard. It uniquely identifies an object and can be used to check the integrity of the object content. If an object has different CRC64 values when being uploaded and downloaded, its content has been changed. CRC64 reflects changes to the contents of the object, not its metadata.

Restrictions:

• This parameter is returned when the CRC64 value was verified for the uploaded object, or when the CRC64 feature has been enabled for the bucket.
• This parameter is not supported for POSIX or SFS objects.

Value range:

A 64-bit CRC value calculated based on the ECMA-182 standard.

Default value:

None

sseKms

str

Explanation:

SSE-KMS algorithm

Value range:

kms

Default value:

None

sseKmsKey

str

Explanation:

ID of the KMS master key when SSE-KMS is used

Value range:

Valid value formats are as follows:

1. regionID:domainID:key/key_id
2. key_id

In the preceding formats:

• regionID indicates the ID of the region where the key is used.
• domainID indicates the ID of the account that the key is for. To obtain it, see How Do I Get My Account ID and IAM User ID? (SDK for Python)
• key_id indicates the ID of the key created on Data Encryption Workshop (DEW).

Default value:

• If this parameter is not specified, the default master key will be used.
• If there is no such a default master key, OBS will create one and use it by default.

sseC

str

Explanation:

SSE-C algorithm

Value range:

AES256

Default value:

None

sseCKeyMd5

str

Explanation:

MD5 value of the key for encrypting objects when SSE-C is used. This value is used to check whether any error occurs during the transmission of the key.

Restrictions:

The value is encrypted by MD5 and then encoded by Base64, for example, 4XvB3tbNTN+tIEVa0/fGaQ==.

Default value:

None

objectUrl

str

Explanation:

Full path to the obtained object after part assembling

Default value:

None

encoding_type

str

Explanation:

Encoding type for Key in the response. If Key in the response contains control characters that are not supported by the XML 1.0 standard, you can specify this parameter to encode Key.

Value range:

url

Default value:

None. If you leave this parameter blank, encoding is not applied to Key.