Obtaining a Service Task

Function

This API is used to obtain a service task.

URI

GET /v1/{project_id}/services/{service_id}/tasks/{task_id}

Table 1 Path Parameters

Parameter	Mandatory	Type	Description
project_id	Yes	String	Project ID. For details, see Obtaining a Project ID and Name.
service_id	Yes	String	Service ID
task_id	Yes	String	ID of a specified service task

Request Parameters

None

Response Parameters

Status code: 200

Table 2 Response body parameters

Parameter	Type	Description
id	String	Task ID
name	String	Task name
service_name	String	Service name
creator	String	Username of the task creator
project_id	String	Project ID of the task creator
description	String	Task description
service_id	String	ID of the service corresponding to a task
created_at	String	Task creation time
updated_at	String	Time when the latest task status was updated
state	String	Task status. The value can be PENDING, RECOVERING, STARTING, UPGRADING, CREATE_FAILED, START_FAILED, RUNNING, STOPPING, STOPPED, ABNORMAL, SUCCEEDED, FAILED, DELETING, FREEZING, or FROZEN.
status	String	Details about a task status (for some statuses only)
error	error object	Error information collected when the task fails to be executed
schedule_status	String	Status of a scheduled task. The value can be ACTIVATED or INACTIVATED.
schedule	TaskSchedule object	Configuration item of a scheduled task. This parameter is optional. Scheduled tasks do not support OBS input. URL input supports only RTMP and RTSP.
input	TaskInput object	Input configuration of a task. This parameter is mandatory.
output	TaskOutputForDisplay object	Output configuration of a task
config	Object	Algorithm configuration parameters specified during task running. This parameter is mandatory for some services. The value must be in JSON format. For details about the configuration items, see the description of the corresponding algorithm service. This parameter applies only to IEF. It cannot be used in ModelArts Edge.

Table 3 error

Parameter	Type	Description
code	String	Error code for an algorithm
message	String	Error information returned by an algorithm

Table 4 TaskSchedule

Parameter	Type	Description
type	String	Type of a scheduled task. This parameter is mandatory for scheduled tasks. The options are once (executed only once), daily (executed daily), weekly (executed weekly), and monthly (executed monthly). ModelArts Edge supports only once and daily.
execution_mode	String	Execution mode of a scheduled task. This parameter is mandatory for scheduled tasks. The value can be period (execution by period) or frequency (execution by frequency). ModelArts Edge supports only execution by period.
timezone	String	Time zone where a user is located. This parameter is mandatory for scheduled tasks. The value is accurate to the minute.
days_of_week	Array of integers	Days in a week when a task is executed. This parameter is mandatory only for weekly tasks. The values 1 to 7 indicate Monday to Sunday respectively.
days_of_month	Array of integers	Days in a month when a task is executed. This parameter is mandatory only for monthly tasks. The values 1 to 31 indicate the first day to the 31st day of a month.
periods	Array of periods objects	Period-based execution configuration. Use either this parameter or frequency. In this mode, at least one period must be specified.
frequency	frequency object	Frequency-based execution configuration. Use either this parameter or periods.

Table 5 periods

Parameter	Type	Description
begin_at	String	Start time of a period. This parameter is mandatory. If a scheduled task is of the once type, the value of the parameter is in the format of yyyy-MM-ddThh:mm:ss. For other scheduled task types, the value of the parameter is in the format of hh:mm:ss.
end_at	String	End time of a period. This parameter is mandatory. If a scheduled task is of the once type, the value of the parameter is in the format of yyyy-MM-ddThh:mm:ss. For other scheduled task types, the value of the parameter is in the format of hh:mm:ss.

Table 6 frequency

Parameter	Type	Description
interval	Integer	Interval between two consecutive executions. This parameter is mandatory when execution_mode is set to frequency. The value ranges from 5 to 720, in minutes.
duration	Integer	Duration for executing a single scheduled task. This parameter is mandatory when execution_mode is set to frequency. The value ranges from 5 to 720, in minutes.
begin_at	String	Start time of executions in a day. This parameter is mandatory. If a scheduled task is of the once type, the value of the parameter is in the format of yyyy-MM-ddThh:mm:ss. For other scheduled task types, the value of the parameter is in the format of hh:mm:ss.
end_at	String	End time of executions in a day. This parameter is mandatory. If a scheduled task is of the once type, the value of the parameter is in the format of yyyy-MM-ddThh:mm:ss. For other scheduled task types, the value of the parameter is in the format of hh:mm:ss.

Table 7 TaskInput

Parameter	Type	Description
type	String	Input type of a task. This parameter is mandatory. ModelArts Edge supports the following types: restful (obtains the stream request URL from the custom streaming media server through the RESTful API), url (specified file address or stream request URL), edgecamera (edge camera bound to IEF), and vcn (VCN device). IEF supports the following types: restful, url, edgecamera, vcn, obs (files stored in OBS), and vis (video streams of VIS)
data	Array of TaskInputData objects	Input details of a task. This parameter is mandatory. The configuration varies according to the input type. Multiple inputs are allowed during creation, but only one input is allowed for update.
vcn	TaskInputVcn object	VCN server. This parameter is mandatory only when the input type is vcn.

Table 8 TaskInputData

Parameter	Type	Description
stream_name	String	Name of a VIS video stream. This parameter is mandatory when the input type is vis.
bucket	String	OBS bucket name. This parameter is mandatory when the input type is obs.
path	String	OBS path. This parameter is mandatory when the input type is obs.
url	String	File URL or RESTful request URL for obtaining a video stream. This parameter is mandatory when the input type is url or restful. The value contains a maximum of 1000 characters.
headers	Object	Headers carried in the RESTful request for obtaining a video stream. This parameter is optional when the input type is restful. The value is key-value pairs in JSON format. A maximum of 10 key-value pairs are allowed.
certificate_check	Boolean	Whether to verify the certificate of the HTTPS request. This parameter is mandatory when the input type is restful. The value can be true or false.
rtsp_path_in_response	String	Video stream address in the response body for the RESTful request. This parameter is mandatory when the input type is restful. The value contains a maximum of 1024 characters.
node_id	String	Node ID. This parameter is required only for some services when the input type is restful or vcn.
device_id	String	VCN ID. This parameter is mandatory when the input type is vcn.
stream_type	Integer	Stream type used for analysis. This parameter is optional when the input type is vcn. The value ranges from 1 to 3. The value 1 indicates primary stream, the value 2 indicates secondary stream 1, and the value 3 indicates secondary stream 2.
id	String	ID of the mounted edge device. This parameter is mandatory when the input type is edgecamera.
camera_type	String	Camera type. This parameter is applicable to ModelArts Edge. When IPC cameras are used, set this parameter to ipc.
tag	Array of Map<String,String> objects	Camera tag. This parameter is mandatory when camera_type is set to ipc. This parameter is applicable to ModelArts Edge.

Table 9 TaskInputVcn

Parameter	Type	Description
ip	String	IP address of a VCN server. This parameter is mandatory only when the input type is vcn.
port	Integer	Port number of a VCN server. This parameter is mandatory only when the input type is vcn.
username	String	Username for logging in to a VCN server. This parameter is mandatory only when the input type is vcn.
password	String	Password for logging in to a VCN server. This parameter is mandatory only when the input type is vcn.

Table 10 TaskOutputForDisplay

Parameter	Type	Description
obs	TaskOutputObs object	Configuration information when the output type is obs. This parameter cannot be used in ModelArts Edge.
dis	TaskOutputDis object	Configuration information when the output type is dis
webhook	TaskOutputWebhook object	Configuration information when the output type is webhook.

Table 11 TaskOutputObs

Parameter	Type	Description
bucket	String	OBS bucket name. This parameter is mandatory when the obs type is used.
path	String	OBS path. This parameter is mandatory when the obs type is used.
data_category	Array of strings	List of task output types. This parameter is optional and is required only for some services. The output contains data in the dataCategory list.

Table 12 TaskOutputDis

Parameter	Type	Description
stream_name	String	DIS stream name. This parameter is mandatory when the dis type is used.
data_category	Array of strings	List of task output types. This parameter is optional and is required only for some services. The output contains data in the dataCategory list.
stream_id	String	DIS stream ID. This parameter is applicable to ModelArts Edge.

Table 13 TaskOutputWebhook

Parameter	Type	Description
url	String	Result callback address. This parameter is mandatory when the output type is webhook.
headers	Object	Headers carried in the result callback. This parameter is mandatory when the output type is webhook. The value is key-value pairs in JSON format. A maximum of 10 key-value pairs are allowed, and a minimum of 1 key-value pair is allowed.
data_category	Array of strings	List of task output types. This parameter is optional and is required only for some services. The output contains data in the dataCategory list.

Status code: 400

Table 14 Response body parameters

Parameter	Type	Description
error_code	String	Internal service error code
error_msg	String	Error message

Status code: 404

Table 15 Response body parameters

Parameter	Type	Description
error_code	String	Internal service error code
error_msg	String	Error message

Example Requests

Obtain a specified task of a given service.

/v1/b722xxxxxxxxxxxxxxxxxxxxxxeb4674/services/88bbxxxx-xxxx-xxxx-xxxx-xxxxxxxxbcfe/tasks/53e4xxxxxxxxxxxxxxxxxxxxxxb55b3e

Example Responses

Status code: 200

The service task information is obtained.

{
  "id" : "53e4xxxxxxxxxxxxxxxxxxxxxxb55b3e",
  "name" : "task-test",
  "creator" : "user_test",
  "project_id" : "b722xxxxxxxxxxxxxxxxxxxxxxeb4674",
  "description" : "hello world",
  "service_id" : "88bbxxxx-xxxx-xxxx-xxxx-xxxxxxxxbcfe",
  "created_at" : "2021-01-01T00:00:00Z",
  "updated_at" : "2021-01-01T00:00:10Z",
  "state" : "RUNNING",
  "input" : {
    "type" : "url",
    "data" : [ {
      "url" : "http://xxxx"
    } ]
  },
  "output" : {
    "dis" : {
      "stream_name" : "dis-test"
    }
  },
  "config" : {
    "image_compression_ratio" : 90,
    "render_result_sw" : 0,
    "video_sampling_interval" : 1
  }
}

Status code: 400

The request is invalid.

{
  "error_code" : "ModelArts.0101",
  "error_msg" : "Invalid argument. parameter [task_id] does not match ^[0-9a-f]{32}$."
}

Status code: 404

The specified service does not exist.

{
  "error_code" : "ModelArts.3502",
  "error_msg" : "Service 2a2db77f-xxxx-xxxx-xxxx-608a31865313 does not exist."
}

Status Codes

Status Code	Description
200	The service task information is obtained.
400	The request is invalid.
404	The specified service does not exist.

Error Codes

See Error Codes.

last updated: 2025-08-26 08:17 UTC - commit: 1ba1873d960563c60759f67898a855d9ba3c3502