Modifying Topics of a Kafka Instance

Function

This API is used to modify topics of a Kafka instance.

Calling Method

For details, see Calling APIs.

URI

PUT /v2/{project_id}/instances/{instance_id}/topics

**Table 1** Path Parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Project ID. For details about how to obtain it, see Obtaining a Project ID.
instance_id	Yes	String	Instance ID.

Request Parameters

**Table 2** Request body parameters
Parameter	Mandatory	Type	Description
topics	No	Array of topics objects	Definition List of topics to be modified. Constraints N/A

**Table 3** topics
Parameter	Mandatory	Type	Description
id	Yes	String	Definition Topic name, which cannot be modified. Constraints N/A Range N/A Default Value N/A
retention_time	No	Integer	Definition Aging time in hour. Constraints N/A Range 0–720 Default Value N/A
sync_replication	No	Boolean	Definition Whether synchronous replication is enabled. Constraints N/A Range true: Yes false: No Default Value N/A
sync_message_flush	No	Boolean	Definition Whether synchronous flushing is enabled. Constraints N/A Range true: Yes false: No Default Value N/A
new_partition_numbers	No	Integer	Definition Number of partitions. Constraints N/A Range N/A Default Value N/A
new_partition_brokers	No	Array of integers	Definition Broker list specified when partitions are added. Constraints N/A Range N/A Default Value N/A
topic_other_configs	No	Array of topic_other_configs objects	Definition Topic configuration. Constraints N/A
topic_desc	No	String	Definition Topic description. Constraints N/A Range N/A Default Value N/A

**Table 4** topic_other_configs
Parameter	Mandatory	Type	Description
name	No	String	Definition Configuration name. Constraints N/A Range N/A Default Value N/A
value	No	String	Definition Configuration value. Constraints N/A Range N/A Default Value N/A

Response Parameters

Status code: 204

The modification is successful.

None

Example Requests

Modifying parameters of topic-1284340884. Specifically, change the aging time to 72 hours, the number of partitions to 6, timestamp to LogAppendTime, max. batch size to 10485760, specify new partitions on broker-1 and broker-2, and disable synchronous replication and flushing.

PUT https://{endpoint}/v2/{project_id}/instances/{instance_id}/topics

{
  "topics" : [ {
    "id" : "test01",
    "retention_time" : 72,
    "sync_replication" : false,
    "sync_message_flush" : false,
    "new_partition_numbers" : 6,
    "new_partition_brokers" : [ 1, 2 ],
    "topic_other_configs" : [ {
      "name" : "message.timestamp.type",
      "value" : "LogAppendTime"
    }, {
      "name" : "max.message.bytes",
      "value" : 10485760
    } ],
    "topic_desc" : "This is a test topic"
  } ]
}