Help Center> IoT Device Management> API Reference> Northbound Java SDK API Reference> Service API List> Subscription Management> Querying a Subscription
Updated on 2022-02-24 GMT+08:00
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Querying a Subscription

Typical Scenario

An NA can subscribe to different types of device change notifications on the IoT platform. The NA can call this API to query configuration information about a subscription.

API Function

This API is used by an NA to query the configuration information about a subscription by subscription ID on the IoT platform.

API Description

1
 
SubscriptionDTO querySingleSubscription(String subscriptionId, String appId, String accessToken) throws NorthApiException

Parameter Description

Parameter

Mandatory or Optional

Type

Location

Description

subscriptionId

Mandatory

String

path

Identifies a subscription, which is obtained by calling or querying the subscription API.

appId

Mandatory

String

query

Identifies the application of the entity that subscribes to a device or rule.

accessToken

Mandatory

String

header

If the Periodically Refreshing a Token API is called, set this parameter to null. Otherwise, set this parameter to the accessToken obtained by the Authentication API.

Response Parameters

SubscriptionDTO

Parameter

Type

Description

subscriptionId

String

Identifies a subscription.

notifyType

String

Indicates the notification type.

callbackUrl

String

Indicates the callback URL of the subscription.

Error Codes

HTTP Status Code

Error Code

Error Description

Remarks

403

1010009

app throttle exceed.

The NA 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

App_key or access_token is invalid.

The access token is invalid.

Recommended handling: Check whether accessToken carried in the API request is correct.
Parent topic: Subscription Management