IoTIoT

Compute
Elastic Cloud Server
Bare Metal Server
Auto Scaling
Image Management Service
Dedicated Host
FunctionGraph
Networking
Virtual Private Cloud
Elastic IP
Elastic Load Balance
NAT Gateway
Direct Connect
Virtual Private Network
Domain Name Service
VPC Endpoint
Cloud Connect
Enterprise Switch
Security & Compliance
Anti-DDoS
Web Application Firewall
Host Security Service
Data Encryption Workshop
Database Security Service
Advanced Anti-DDoS
Data Security Center
Container Guard Service
Situation Awareness
Managed Threat Detection
Compass
Cloud Certificate Manager
Anti-DDoS Service
Databases
Relational Database Service
Document Database Service
Data Admin Service
Data Replication Service
GaussDB NoSQL
GaussDB(for MySQL)
Distributed Database Middleware
GaussDB(for openGauss)
Developer Services
ServiceStage
Distributed Cache Service
Simple Message Notification
Application Performance Management
Application Operations Management
Blockchain Service
API Gateway
Cloud Performance Test Service
Distributed Message Service for Kafka
Distributed Message Service for RabbitMQ
Distributed Message Service for RocketMQ
Cloud Service Engine
DevCloud
ProjectMan
CodeHub
CloudRelease
CloudPipeline
CloudBuild
CloudDeploy
Cloud Communications
Message & SMS
Cloud Ecosystem
Marketplace
Partner Center
User Support
My Account
Billing Center
Cost Center
Resource Center
Enterprise Management
Service Tickets
HUAWEI CLOUD (International) FAQs
ICP License Service
Support Plans
Customer Operation Capabilities
Partner Support Plans
Professional Services
enterprise-collaboration
Meeting
IoT
IoT
Intelligent EdgeFabric
DeveloperTools
SDK Developer Guide
API Request Signing Guide
Terraform
Koo Command Line Interface
Updated at: Feb 24, 2022 GMT+08:00

Querying Information About a Device

Typical Scenario

If an NA needs to view detailed information (such as the manufacturer, model, version, status, and service attributes) of a device that has been registered on the IoT platform, the NA can call this API to obtain the information.

API Function

This API is used by an NA to query detailed information of a specified device based on the device ID on the IoT platform, such as configuration, status and service attributes.

API Description

1
QuerySingleDeviceInfoOutDTO querySingleDeviceInfo(String deviceId, String select, String appId, String accessToken) throws NorthApiException

Parameter Description

Parameter

Mandatory or Optional

Type

Location

Description

deviceId

Mandatory

String

path

Identifies a device. The device ID is allocated by the IoT platform during device registration.

select

Optional

String

query

Indicates the query condition. The value can be IMSI.

appId

Mandatory

String

query

If the device belongs to the current application, set this parameter to null. Otherwise, set this parameter to the ID of the authorized application.

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

QuerySingleDeviceInfoOutDTO structure

Parameter

Type

Description

deviceId

String(256)

Identifies a device.

gatewayId

String(256)

Identifies a gateway. The gateway ID is the same as the device ID if the device is a directly connected device. If the device is a non-directly connected device, the gateway ID is the device ID of the directly connected device (that is, the gateway) with which it associates.

nodeType

Enum

Indicates the node type. The value options are ENDPOINT, GATEWAY, and UNKNOW.

createTime

String(256)

Indicates the time when the device is created. The value is in the format of yyyyMMdd'T'HHmmss'Z'. An example value is 20151212T121212Z.

lastModifiedTime

String(256)

Indicates the last time when the device is modified.

deviceInfo

DeviceInfo

Indicates information about the device. For details, see DeviceInfo structure.

services

List<DeviceService>

Indicates the device service list. For details, see DeviceService structure.

DeviceInfo structure

Parameter

Type

Description

nodeId

String(256)

Identifies a device.

name

String(256)

Indicates the device name.

description

String(2048)

Indicates the device description.

manufacturerId

String(256)

Uniquely identifies a manufacturer.

manufacturerName

String(256)

Indicates the manufacturer name.

mac

String(256)

Indicates the MAC address of the device.

location

String(2048)

Indicates the device location.

deviceType

String(256)

Indicates the device type. The upper camel case is used, for example, MultiSensor, ContactSensor, and CameraGateway.

model

String(256)

Indicates the device model.

In Z-Wave, the format is productType + productId. The value is a hexadecimal value in the format of XXXX-XXXX. Zeros are added if required, for example, 001A-0A12. The format in other protocols is still to be determined.

swVersion

String(256)

Indicates the software version of the device.

In Z-Wave, the format is major version.minor version, for example, 1.1.

fwVersion

String(256)

Indicates the firmware version of the device.

hwVersion

String(256)

Indicates the hardware version of the device.

protocolType

String(256)

Indicates the protocol type used by the device. The value options are CoAP, huaweiM2M, Z-Wave, ONVIF, WPS, Hue, WiFi, J808, Gateway, ZigBee, and LWM2M.

bridgeId

String(256)

Identifies the bridge through which the device accesses the IoT platform.

status

String

Indicates whether the device is online. The value options are ONLINE, OFFLINE, and ABNORMAL.

statusDetail

String(256)

Indicates the device status details. The value of this parameter varies with the value of status. For details, see status and statusDetail structure.

mute

String

Indicates whether the device is in the frozen state. Based on the value of this parameter, the IoT platform determines whether to manage and store data reported by the device.

  • TRUE: The device is in the frozen state.
  • FALSE: The device is not in the frozen state.

supportedSecurity

String

Indicates whether the security mode is supported.

  • TRUE: The security mode is supported.
  • FALSE: The security mode is not supported.

isSecurity

String

Indicates whether the security mode is enabled.

  • TRUE: The security mode is enabled.
  • FALSE: The security mode is disabled.

signalStrength

String(256)

Indicates the signal strength of the device.

sigVersion

String(256)

Indicates the SIG version of the device.

serialNumber

String(256)

Indicates the serial number of the device.

batteryLevel

String(256)

Indicates the battery level of the device.

status and statusDetail

status

statusDetail

OFFLINE

NONE CONFIGURATION_PENDING

ONLINE

NONE COMMUNICATION_ERROR CONFIGURATION_ERROR BRIDGE_OFFLINE FIRMWARE_UPDATING DUTY_CYCLE NOT_ACTIVE

NOTE:

When the device status information is reported to the IoT platform, status and statusDetail must be included. It is recommended that statusDetail be used only for display but not for logical judgment.

DeviceService structure

Parameter

Type

Description

serviceId

String(256)

Identifies a service.

serviceType

String(256)

Indicates the service type.

serviceInfo

ServiceInfo

Indicates the masked device service information. For details, see ServiceInfo structure.

data

ObjectNode(2097152)

Indicates an attribute-value pair (AVP).

eventTime

String(256)

The value is in the format of yyyyMMdd'T'HHmmss'Z'. An example value is 20151212T121212Z.

ServiceInfo structure

Parameter

Type

Description

muteCmds

List<String>

Indicates the device command list.

Error Codes

HTTP Status Code

Error Codes

Error Description

Remarks

400

100405

The request parameter is invalid.

The request message contains invalid parameters.

Recommended handling: Check whether parameters in the API request are correct by referring to the request parameter description.

403

100203

The application is not existed.

The application does not exist.

Recommended handling:

  • Check whether appId carried in the HTTP request header is correct.
  • Check whether appId in the request path (URL) is correct.

403

100217

The application hasn't 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

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.

404

100403

The device is not existed.

The device does not exist.

Recommended handling: Check whether deviceId is correct.

404

100418

The deviceData is not existed.

The device data does not exist.

Recommended handling:

  • If deviceId carried in the request is incorrect, check whether deviceId belongs to appId or whether deviceId is incorrect.
  • Check whether appId carried in the header contains deviceId.
  • If the URL contains the optional parameter appId, check whether the value of appId is correct.

500

100203

The application is not existed.

The application does not exist.

Recommended handling:

  • Check whether appId carried in the HTTP request header is correct.
  • Check whether appId in the request path (URL) is correct.

500

50252

Internal server error.

An internal server error occurs.

Recommended handling: An internal error occurs on the IoT platform. Contact IoT platform maintenance personnel.

Did you find this page helpful?

Failed to submit the feedback. Please try again later.

Which of the following issues have you encountered?







Please complete at least one feedback item.

Content most length 200 character

Content is empty.

OK Cancel