This topic provides the common request parameters and common response parameters of Message Queue for Apache Kafka API operations.

Common request parameters

Common request parameters must be included in all Message Queue for Apache Kafka API requests.

Parameter Type Required Description
Format String No The format in which the response is returned. Valid values: JSON and XML. Default value: XML.
Version String Yes The version number of the API in YYYY-MM-DD format. Set the value to 2019-09-16.
AccessKeyId String Yes The AccessKey ID provided to you by Alibaba Cloud.
Signature String Yes The signature string of the API request.
SignatureMethod String Yes The encryption method of the signature string. Set the value to HMAC-SHA1.
Timestamp String Yes The timestamp of the request. Specify the time in UTC in the ISO 8601 standard YYYY-MM-DDThh:mm:ssZ format. Example: 2013-01-10T12:00:00Z, which indicates 20:00:00 on January 10, 2013 (UTC+8).
SignatureVersion String Yes The version of the signature encryption algorithm. Set the value to 1.0.
SignatureNonce String Yes A unique, random number that is used to prevent replay attacks. You must use different numbers for different requests.

Sample requests

https:/ Action=GetInstanceList

Common response parameters

Every response returns a unique RequestID regardless of whether the request is successful. API responses use a unified format. The HTTP 2xx response codes indicate a successful call, and the HTTP 4xx and 5xx response codes indicate a failed call.

XML format

<? xml version="1.0" encoding="UTF-8"? >
<!-The root node of the result-->
<Interface Name+Response>
 | <!--Request ID-->
 | <RequestId>4C467B38-3910-447D-87BC-AC049166F216</RequestId>
 | <!--Response data-->
<Interface Name+Response>

JSON format

    "RequestId": "4C467B38-3910-447D-87BC-AC049166F216"
    /* Response data */