Call ListNodeInputOrOutput to query node input and output - DataWorks - Alibaba Cloud - DataWorks

Queries the input and output information of the current node.

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RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.
API: The API that you can call to perform the action.
Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.
Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.
- For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.
- For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.
Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.
Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

dataworks:*

get

*All Resource

*

None

Request parameters

Parameter	Type	Required	Description	Example
NodeId	integer	Yes	The node ID. You can call the ListNodes operation to query the node ID.	12314567
ProjectEnv	string	Yes	The environment in which the node runs. Valid values: DEV (development environment) and PROD (production environment). Valid values: PROD : Production environment. DEV : Development environment.	PROD
IoType	string	Yes	Specifies whether to query upstream or downstream nodes. Valid values: input: upstream nodes. output: downstream nodes.	output

Response elements

Element	Type	Description	Example
	object	The response parameters.
HttpStatusCode	integer	The HTTP status code.	200
RequestId	string	The request ID. You can use the ID to locate logs and troubleshoot issues.	E6F0DBDD-5AD****
ErrorMessage	string	The error message.	The project does not exist.
ErrorCode	string	The error code.	Invalid.Tenant.ProjectNotExists
Success	boolean	Indicates whether the request was successful.	true
Data	array<object>	The list of input and output nodes.
	object	The input and output information.
TableName	string	This parameter is not in use and cannot be queried.	dwd_xxx_table
Data	string	The name of the input or output node.	xxxx.123141254_out
NodeId	integer	The node ID.	12314567

Examples

Success response

JSON format

{
  "HttpStatusCode": 200,
  "RequestId": "E6F0DBDD-5AD****",
  "ErrorMessage": "The project does not exist.",
  "ErrorCode": "Invalid.Tenant.ProjectNotExists",
  "Success": true,
  "Data": [
    {
      "TableName": "dwd_xxx_table",
      "Data": "xxxx.123141254_out",
      "NodeId": 12314567
    }
  ]
}

Error codes

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.