Help Center> MapReduce Service> API Reference> Calling APIs> Response
Updated on 2022-12-09 GMT+08:00
View PDF

Response

Status Code

After sending a request, you will receive a response, including a status code, response header, and response body.

A status code is a group of digits, ranging from 1xx to 5xx. It indicates the status of a request. For more information, see Status Codes.

For the API to obtain a user token, if the status code 201 is returned after the API is called, the request is successful.

Response Header

Similar to a request, a response also has a header, for example, Content-Type.

Figure 1 shows the response header fields for the API used to obtain a user token. The x-subject-token header field is the desired user token. This token can then be used to authenticate the calling of other APIs.

Figure 1 Header fields of the response to the request for obtaining a user token

(Optional) Response Body

This part is optional. The body of a response is often returned in structured format (for example, JSON or XML) as specified in the Content-Type header field. The response body transfers content except the response header.

The following shows the response body for the API to obtain a user token. For the sake of space, only part of the content is displayed here.

{
    "token": {
        "expires_at": "2019-02-13T06:52:13.855000Z",
        "methods": [
            "password"
        ],
        "catalog": [
            {
                "endpoints": [
                    {
        "region_id": "aaa"//The region ID "aaa" is used as an example.
...

If an error occurs during API calling, an error code and a message will be displayed. The following shows an error response body.

{
    "error_msg": "Invalid cluster name.",
    "error_code": "12000002"
}

In the response body, error_code is an error code, and error_msg provides information about the error.

Parent topic: Calling APIs