Query a Product

Function

This API is used by an application to query details of a product model that has been created on the IoT platform, including the services, properties, and commands in the product model.

Debugging

You can debug this API through automatic authentication in API Explorer or use the SDK sample code generated by API Explorer.

URI

GET /v5/iot/{project_id}/products/{product_id}

**Table 1** Path Parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Parameter description: project ID. For details about how to obtain the project ID, see Obtaining a Project ID.
product_id	Yes	String	Parameter description: product ID, which uniquely identifies a product. It is allocated by the platform after the product is created on the platform. Value: The value can contain a maximum of 36 characters. Only letters, digits, underscores (_), and hyphens (-) are allowed.

**Table 2** Query Parameters
Parameter	Mandatory	Type	Description
app_id	No	String	Parameter description: resource space ID. This parameter is optional. If you have multiple resource spaces, you can use this parameter to specify the resource space that the product to be queried belongs to. If this parameter is not specified, the product in the default resource space will be queried. If there is no product in the default resource space, the earliest created product will be queried. If you have multiple resource spaces and do not want to specify this parameter, contact Huawei technical engineers to combine your resource spaces. Value: The value can contain a maximum of 36 characters. Only letters, digits, underscores (_), and hyphens (-) are allowed.

Request Parameters

**Table 3** Request header parameters
Parameter	Mandatory	Type	Description
X-Auth-Token	No	String	Parameter description: user token. You can obtain the token by calling the IAM API Obtaining a User Token Through Password Authentication. X-Subject-Token in the response header returned by the API is the desired user token. For details about how to obtain the token, see Token Authentication.
Instance-Id	No	String	Parameter description: instance ID. Unique identifier of each instance in the physical multi-tenant scenario. Mandatory for professional editions and recommended in other cases. Log in to the IoTDA console and choose Overview in the navigation pane to view the instance ID. For details, see Viewing Instance Details.

Response Parameters

Status code: 200

**Table 4** Response body parameters
Parameter	Type	Description
app_id	String	Resource space ID.
app_name	String	Resource space name.
product_id	String	Product ID, which uniquely identifies a product. It is allocated by the platform after the product is created on the platform.
name	String	Product name.
device_type	String	Device type.
protocol_type	String	Protocol used by a device. Options: MQTT, CoAP, HTTP, HTTPS, Modbus, ONVIF, OPC-UA, OPC-DA, and Other.
data_format	String	Format of the data reported by the device. Options: json and binary.
manufacturer_name	String	Manufacturer name.
industry	String	Industry to which the device belongs.
description	String	Product description.
service_capabilities	Array of ServiceCapability objects	List of service capabilities of the device.
create_time	String	Time when a product was created on the platform. The format is yyyyMMdd'T'HHmmss'Z', for example, 20151212T121212Z.

**Table 5** ServiceCapability
Parameter	Type	Description
service_id	String	Parameter description: service ID of the device. The value must be unique in a product. Value: The value can contain a maximum of 64 characters. Only letters, digits, and special characters (_?'#().,&%@!-$) are allowed.
service_type	String	Parameter description: service type of the device. Value: The value can contain a maximum of 64 characters. Only letters, digits, and special characters (_?'#().,&%@!-$) are allowed.
properties	Array of ServiceProperty objects	Parameter description: list of properties supported by the device service. Value: The array length cannot exceed 500.
commands	Array of ServiceCommand objects	Parameter description: list of commands supported by the device service. Value: The array length cannot exceed 500.
events	Array of ServiceEvent objects	Parameter description: list of events supported by the device service. Currently, event customization is not supported. You do not need to define this field when creating or modifying a product. Value: The array length cannot exceed 500.
description	String	Parameter description: device service description. Value: The value can contain a maximum of 128 characters. Only letters, digits, spaces, and special characters (_?'#().,;&%@!-:$![]~/) are allowed.
option	String	Parameter description: whether the device service is mandatory. Currently, this field is not a functional field and is used only for identification. Options: Master: master service Mandatory: mandatory service Optional: optional service The default value is Optional. Default: Optional

**Table 6** ServiceProperty
Parameter	Type	Description
property_name	String	Parameter description: device property name. The value must be unique in the device service. If device property names are used as keys in the device shadow JSON file, the names cannot contain periods (.), dollar signs ($), and the null character (hexadecimal ASCII code 00). A device shadow file that contains these special characters cannot be updated. Value: The value can contain a maximum of 64 characters. Only letters, digits, and special characters (_?'#().,&%@!-) are allowed.
data_type	String	Parameter description: data type of the device property. Options: int, long, decimal, string, DateTime, jsonObject, enum, boolean, and string list.
required	Boolean	Parameter description: whether the device property is mandatory. The default value is false. Default: false
enum_list	Array of strings	Parameter description: list of enumerated values of the device property.
min	String	Parameter description: minimum value of the device property. Value length: 1–16 characters Minimum: 1 Maximum: 16
max	String	Parameter description: maximum value of the device property. Value length: 1–16 characters Minimum: 1 Maximum: 16
max_length	Integer	Parameter description: maximum length of the device property.
step	Double	Parameter description: step of the device property.
unit	String	Parameter description: unit of the device property. Value length: a maximum of 16 characters Maximum: 16
method	String	Parameter description: access mode of the device property. Options: RWE, RW, RE, WE, E, W, and R. R: The property value can be read. W: The property value can be written. E: The property value can be subscribed to, that is, an event is reported when the property value changes.
description	String	Parameter description: device property description. Value: The value can contain a maximum of 128 characters. Only letters, digits, spaces, and special characters (_?'#().,;&%@!-:$![]~/) are allowed.
default_value	Object	Parameter description: default value of the device property. If the default value is set, it will be written to the desired data of the device shadow when the product is used to create a device. When the device goes online, the default value will be delivered to the device.

**Table 7** ServiceCommand
Parameter	Type	Description
command_name	String	Parameter description: device command name. The value must be unique in the device service. Value: The value can contain a maximum of 64 characters. Only letters, digits, and special characters (_?'#().,&%@!-) are allowed.
paras	Array of ServiceCommandPara objects	Parameter description: list of device command parameters.
responses	Array of ServiceCommandResponse objects	Parameter description: list of response parameters of the device command.

**Table 8** ServiceCommandResponse
Parameter	Type	Description
response_name	String	Parameter description: name of the device command response. Value: The value can contain a maximum of 128 characters. Only letters, digits, and special characters (_?'#().,&%@!-) are allowed.
paras	Array of ServiceCommandPara objects	Parameter description: list of response parameters of the device command.

**Table 9** ServiceEvent
Parameter	Type	Description
event_type	String	Parameter description: device event type. The value must be unique in the device service. Value: The value can contain a maximum of 32 characters. Only letters, digits, and special characters (_?'#().,&%@!-) are allowed.
paras	Array of ServiceCommandPara objects	Parameter description: list of device event parameters.

**Table 10** ServiceCommandPara
Parameter	Type	Description
para_name	String	Parameter description: parameter name. Value: The value can contain a maximum of 32 characters. Only letters, digits, and special characters (_?'#().,&%@!-) are allowed.
data_type	String	Parameter description: data type of the parameter. Options: int, long, decimal, string, DateTime, jsonObject, enum, boolean, and string list.
required	Boolean	Parameter description: whether the parameter is mandatory. The default value is false. Default: false
enum_list	Array of strings	Parameter description: list of enumerated values of the parameter.
min	String	Parameter description: minimum value of the parameter. Value length: 1–16 characters Minimum: 1 Maximum: 16
max	String	Parameter description: maximum value of the parameter. Value length: 1–16 characters Minimum: 1 Maximum: 16
max_length	Integer	Parameter description: maximum length of the parameter.
step	Double	Parameter description: step of the parameter.
unit	String	Parameter description: unit of the parameter. Value length: a maximum of 16 characters Maximum: 16
description	String	Parameter description: parameter description. Value: The value can contain a maximum of 128 characters. Only letters, digits, spaces, and special characters (_?'#().,;&%@!-:$![]~/) are allowed.

Example Requests

Queries details about a specified product.

GET https://{endpoint}/v5/iot/{project_id}/products/{product_id}

Example Responses

Status code: 200

Successful response

{
  "app_id" : "jeQDJQZltU8iKgFFoW060F5SGZka",
  "app_name" : "testAPP01",
  "product_id" : "5ba24f5ebbe8f56f5a14f605",
  "name" : "Thermometer",
  "device_type" : "Thermometer",
  "protocol_type" : "MQTT",
  "data_format" : "json",
  "manufacturer_name" : "ABC",
  "industry" : "smartCity",
  "description" : "this is a thermometer produced by Huawei",
  "service_capabilities" : [ {
    "service_id" : "temperature",
    "service_type" : "temperature",
    "properties" : [ {
      "property_name" : "temperature",
      "required" : true,
      "data_type" : "decimal",
      "enum_list" : null,
      "min" : "1",
      "max" : "100",
      "max_length" : 100,
      "step" : 0.1,
      "unit" : "centigrade",
      "method" : "RW",
      "description" : "force",
      "default_value" : {
        "color" : "red",
        "size" : 1
      }
    } ],
    "commands" : [ {
      "command_name" : "reboot",
      "paras" : [ {
        "para_name" : "force",
        "required" : false,
        "data_type" : "string",
        "enum_list" : null,
        "min" : "1",
        "max" : "100",
        "max_length" : 100,
        "step" : 0.1,
        "unit" : "km/h",
        "description" : "force"
      } ],
      "responses" : [ {
        "response_name" : "ACK",
        "paras" : [ {
          "para_name" : "force",
          "required" : false,
          "data_type" : "string",
          "enum_list" : null,
          "min" : "1",
          "max" : "100",
          "max_length" : 100,
          "step" : 0.1,
          "unit" : "km/h",
          "description" : "force"
        } ]
      } ]
    } ],
    "events" : [ {
      "event_type" : "reboot",
      "paras" : [ {
        "para_name" : "force",
        "required" : false,
        "data_type" : "string",
        "enum_list" : null,
        "min" : "1",
        "max" : "100",
        "max_length" : 100,
        "step" : 0.1,
        "unit" : "km/h",
        "description" : "force"
      } ]
    } ],
    "description" : "temperature",
    "option" : "Mandatory"
  } ],
  "create_time" : "20190303T081011Z"
}