Function

This API is used to create a stream.

When creating a stream, specify a stream type (common or advanced) and the number of partitions.
A maximum of 10 advanced stream partitions and 50 common stream partitions can be created for an account by default. You can submit a work order to increase the quota.

Calling Method

For details, see Calling APIs.

URI

POST /v2/{project_id}/streams

**Table 1** Path Parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Project ID

Request Parameters

**Table 2** Request header parameters
Parameter	Mandatory	Type	Description
X-Auth-Token	Yes	String	User token. It can be obtained by calling the IAM API used to obtain a user token. The value of X-Subject-Token in the response header is the user token.

**Table 3** Request body parameters
Parameter	Mandatory	Type	Description
stream_name	Yes	String	Stream name. The stream name can contain 1 to 64 characters, including letters, digits, underscores (_), and hyphens (-). Maximum: 64
partition_count	Yes	Integer	Number of partitions. Partitions are the base throughput unit of the DIS stream.
stream_type	No	String	Stream type. COMMON: a common stream with a bandwidth of 1 Mbit/s ADVANCED: an advanced stream with a bandwidth of 5 Mbit/s Enumeration values: COMMON ADVANCED
data_type	No	String	Source data type. BLOB: a collection of binary data stored as a single entity in a database management system JSON: an open-standard file format that uses human-readable text to transmit data objects consisting of attribute-value pairs and array data types CSV: a simple text format for storing tabular data in a plain text file. Commas are used as delimiters. Default value: BLOB Enumeration values: BLOB JSON CSV
data_duration	No	Integer	Data retention period. Value range: 24–72 Unit: hour If this parameter is left unspecified, the default value will be used. Default: 24
auto_scale_enabled	No	Boolean	Whether to enable auto scaling. true: Auto scaling is enabled. false: Auto scaling is disabled. By default, auto scaling is disabled. Default: false
auto_scale_min_partition_count	No	Long	Minimum number of partitions for automatic scale-down when auto scaling is enabled. Minimum: 1
auto_scale_max_partition_count	No	Integer	Maximum number of partitions for automatic scale-up when auto scaling is enabled.
data_schema	No	String	Source data structure that defines JSON and CSV formats. It is described in the syntax of the Avro schema.
csv_properties	No	CSVProperties object	Attributes of data in CSV format, such as delimiter
compression_format	No	String	Data compression type. Currently, the following compression types are supported: snappy gzip zip By default, data is not compressed. Enumeration values: snappy gzip zip
tags	No	Array of Tag objects	List of stream tags
sys_tags	No	Array of SysTag objects	Stream enterprise projects

**Table 4** CSVProperties
Parameter	Mandatory	Type	Description
delimiter	No	String	Data separator

**Table 5** Tag
Parameter	Mandatory	Type	Description
key	No	String	Tag key. It cannot be left blank. It must be unique for each resource. It can contain uppercase and lowercase letters, digits, hyphens (-), underscores (_), and Unicode characters (\u4E00-\u9FFF). Minimum: 1 Maximum: 36
value	No	String	Value. It can contain a maximum of 43 characters. It can contain uppercase and lowercase letters, digits, periods (.), hyphens (-), underscores (_), and Unicode characters (\u4E00-\u9FFF). It can only contain digits, letters, hyphens (-), and underscores (_). Minimum: 0 Maximum: 43

**Table 6** SysTag
Parameter	Mandatory	Type	Description
key	No	String	Tag key. It cannot be left blank. Its value must be _sys_enterprise_project_id.
value	No	String	Value. The value is the enterprise project ID, which needs to be obtained on the enterprise management page. It is a 36-digit UUID.

Response Parameters

None

Example Requests

Creating a Stream

POST https://{Endpoint}/v2/{project_id}/streams

{
  "stream_name" : "newstream",
  "partition_count" : 3,
  "data_duration" : 24
}

Example Responses

None

Status Codes

Status Code	Description
201	Created

Error Codes

See Error Codes.