Querying a Command Revocation Task
Typical Scenario
After delivering a command revocation command to a device, an application can call this API to query the execution status of the command revocation task.
API Function
This API is used by an application to query the information and status of one or more command revocation tasks based on specified conditions on the platform.
API Description
1 | def queryDeviceCmdCancelTask(self, qdcctInDTO, accessToken)
|
Parameter Description
| Parameter | Mandatory or Optional | Type | Location | Description |
|---|---|---|---|---|
| qdcctInDTO | Mandatory | QueryDeviceCmdCancelTaskInDTO2 | query | For details, see QueryDeviceCmdCancelTaskInDTO structure. |
| accessToken | Mandatory | String | header | This parameter is set to the value of the accessToken obtained by calling the Authentication API. |
QueryDeviceCmdCancelTaskInDTO structure
| Parameter | Mandatory or Optional | Type | Location | Description |
|---|---|---|---|---|
| pageNo | Optional | Integer(>=0) | query | Indicates the page number. The value is greater than or equal to 0. The default value is 0. |
| pageSize | Optional | Integer(>=1&&<=1000) | query | Indicates the number of records to be displayed on each page. The value range is 1–1000. The default value is 1000. |
| taskId | Optional | String | query | Identifies a command revocation task. |
| deviceId | Optional | String | query | Identifies the device whose commands are to be revoked by the revocation task. |
| status | Optional | String | query | Indicates the status of the command revocation task. |
| startTime | Optional | String | query | Indicates the start time. Revocation tasks created later than the specified start time are queried. The value is in the format of yyyyMMdd'T'HHmmss'Z'. An example value is 20151212T121212Z. |
| endTime | Optional | String | query | Indicates the end time. Revocation tasks created earlier than the specified end time are queried. The value is in the format of yyyyMMdd'T'HHmmss'Z'. An example value is 20151212T121212Z. |
| appId | Optional | String | query | If the command belongs to the current application, set this parameter to null. Otherwise, set this parameter to the ID of the authorized application. |
Response Parameters
QueryDeviceCmdCancelTaskOutDTO structure
| Parameter | Type | Description |
|---|---|---|
| pagination | Pagination | Indicates pagination information. For details, see Pagination structure. |
| data | List<DeviceCommandCancelTaskRespV4> | Indicates the device command list. For details, see DeviceCommandCancelTaskRespV4 structure. |
| Parameter | Type | Description |
|---|---|---|
| pageNo | long | Indicates the page number. |
| pageSize | long | Indicates the number of records to be displayed on each page. |
| totalSize | long | Indicates the total number of records, that is, the total number of commands queried in the command revocation task. |
DeviceCommandCancelTaskRespV4 structure
| Parameter | Type | Description |
|---|---|---|
| taskId | String(1-64) | Identifies a command revocation task. |
| appId | String(1-64) | Identifies the application to which the command revocation task belongs. |
| deviceId | String(1-64) | Identifies the device whose commands are to be revoked by the revocation task. |
| status | String | Indicates the status of the command revocation task.
|
| totalCount | Integer | Indicates the total number of revoked commands. |
| deviceCommands | List<DeviceCommandRespV4> | Indicates a list of device commands to be revoked by the revocation task. For details, see DeviceCommandRespV4 structure. |
| Parameter | Type | Description |
|---|---|---|
| commandId | String(1-64) | Identifies a device command. |
| appId | String(1-64) | Uniquely identifies an application. This parameter is used to identify an application that can call open APIs provided by the platform. |
| deviceId | String(1-64) | Uniquely identifies the device that delivers the command. |
| command | CommandDTOV4 | Indicates information about the delivered command. For details, see CommandDTOV4 structure. |
| callbackUrl | String(1024) | Indicates the URL for receiving command status change notifications. When the command status changes, such as execution failure, execution success, timeout, sending, or sent, the application is notified. |
| expireTime | Integer(>=0) | Indicates the command expiration time, in units of seconds. The command will not be delivered after the specified time elapses. The default validity period is 48 hours (86400 seconds x 2). |
| status | String | Indicates the status of the command.
|
| result | ObjectNode | Indicates the detailed command execution result. |
| creationTime | String(20) | Indicates the time when the command is created. |
| executeTime | String(20) | Indicates the time when the command is executed. |
| platformIssuedTime | String(20) | Indicates the time when the platform sends the command. |
| deliveredTime | String(20) | Indicates the time when the command is delivered. |
| issuedTimes | Integer(>=0) | Indicates the number of times the platform delivers the command. |
| maxRetransmit | Integer(0~3) | Indicates the maximum number of times the command can be retransmitted. |
| Parameter | Mandatory or Optional | Type | Description |
|---|---|---|---|
| serviceId | Mandatory | String(1-64) | Identifies the service corresponding to the command. |
| method | Mandatory | String(1-128) | Indicates the command name. |
| paras | Optional | Object | Indicates a JSON string of command parameters. The specific format is negotiated by the application and the device. |
Error Codes
| HTTP Status Code | Error Code | Error Description | Remarks |
|---|---|---|---|
| 200 | 100203 | The application does not exist. | The application does not exist. Recommended handling:
|
| 200 | 100217 | The application has not been authorized. | The application has not been authorized. Recommended handling: In scenarios where applications are not authorized, ensure that request parameter appId is null. |
| 200 | 100418 | The device data does not exist. | The device data does not exist. Recommended handling:
|
| 400 | 100022 | An input parameter is invalid. | An input parameter is invalid. Recommended handling: Check whether parameters carried in the API call request are valid. |
| 403 | 100203 | The application does not exist. | The application does not exist. Recommended handling:
|
| 403 | 100217 | The application has not been authorized. | The application has not been authorized. Recommended handling: In scenarios where applications are not authorized, ensure that request parameter appId is null. |
| 403 | 1010009 | The application calls the API at a frequency that exceeds the flow control threshold. | The application calls the API at a frequency that exceeds the flow control threshold (100 calls per minute by default). Recommended handling: Contact IoT platform maintenance personnel to adjust the flow control threshold or control the API call frequency. |
| 403 | 1010005 | Invalid access token or application ID. | The access token is invalid. Recommended handling: Check whether accessToken carried in the API request is correct. |
| 500 | 100001 | Internal server error. | An internal server error occurs. Recommended handling: An internal error occurs on the IoT platform. Contact IoT platform maintenance personnel. |
| 500 | 100220 | Failed to obtain the AppKey from the message header. | Failed to obtain the appKey. Recommended handling: Check whether appId is carried in the API request header. |
| 503 | 100501 | Congestion occurs, and the current network is under flow control. | Congestion occurs. The current network is under flow control. |
Last Article: Creating a Device Command Revocation Task
Next Article: Calling a Device Service
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