API Overview_IoT Device Access

Product Management APIs

API	Description
Query the Product List	This API is used to query the list of product models that have been imported to the platform to learn about the brief information about the product models.
Create a Product	This API is used to create a product. It is used to create a product but not to create or install a plug-in. If you need to encode or decode data, develop and install a plug-in on the platform.
Query a Product	This API is used to query details about a specific product model that has been imported to the platform, including the services, properties, and commands of the product model.
Modify a Product	This API is used to modify a specific product model that has been imported to the platform, including the services, properties, and commands of the product model. This API is used to modify the product but not to modify or install a plug-in. If the service definition in the product is modified and the corresponding plug-in exists on the platform, modify and reinstall the plug-in.
Delete a Product	This API is used to delete a specific product model that has been imported to the platform.

Device Management APIs

API	Description
Query the Device List	This API is used to query the device list on the platform.
Create a Device	This API is used to register a device with the platform. The device can access the platform only after being registered.
Query a Device	This API is used to query the details about a specific device on the platform.
Modify a Device	This API is used to modify the basic information about a specific device on the platform.
Delete a Device	This API is used to delete a specific device from the platform. If the device is connected to an indirectly connected device, you must delete the indirectly connected device first.
Reset a Device Secret	This API is used by an application to reset a device secret. If the request contains a secret, the platform resets the device secret to the specified secret. If the request does not contain a secret, the platform automatically generates a new random secret and returns it.
Freeze a Device	This API is used to freeze a device. After the device is frozen, the device cannot go online. You can unfreeze the device by calling the API used to unfreeze a device. Currently, only devices that are directly connected to the platform can be frozen.
Unfreeze a Device	This API is used to unfreeze a device. After the device is unfrozen, the device can go online.
Reset a Device Fingerprint	This API is used by an application to reset a device fingerprint. A device fingerprint will be reset to the specified one. If a device fingerprint is not specified, it is left empty.
Query Device List Flexibly	This API is used by an application to query a desired device list using SQL statements.
Query the List of Device Groups to Which a Specified Device Is Added	This API is used by an application to query the list of device groups to which a device is added.

Device Message APIs

API	Description
Deliver a Message to a Device	This API is used to query messages of a specific device. By default, the platform stores a maximum of 20 messages for each device. If the number of messages exceeds 20, the earliest messages will be overwritten by subsequent messages.
Query Device Messages	This API is used by an application to deliver a message to a specific device to control the device. After an application delivers a message to the platform, the platform returns a response to the application and then sends the message to the device.
Query a Message by Message ID	This API is used to query a message by message ID.

Device Command APIs

API	Description
Deliver a Command to a Device	A product model defines commands that the platform can deliver to devices. This API is used by an application to deliver synchronous commands to a specific device to control the device.
Deliver an Asynchronous Command	A product model defines commands that the platform can deliver to devices. This API is used by an application to deliver asynchronous commands to a specific device to control the device.
Query a Command with a Specific ID	This API is used to query a command by command ID.

Device Property APIs

API	Description
Query Device Properties	A product model defines properties that the platform can deliver to devices. This API is used by an application to query properties of a specific device.
Modify Device Properties	A product model defines properties that the platform can deliver to devices. This API is used by an application to modify properties of a device. The platform sends the properties to the device in synchronous mode and returns the execution result synchronously to the application.

AMQP Queue Management APIs

API	Description
Query the AMQP List	This API is used to query the AMQP queue list on the platform.
Create an AMQP Queue	This API is used to create an AMQP queue on the platform. You can call the data transfer rule management API to push data to the AMQP queue.
Query an AMQP Queue	This API is used to query the details of a specific AMQP queue on the platform.
Delete an AMQP Queue	This API is used to delete a specific AMQP queue from the platform.

Access Credential Management APIs

API	Description
Generate an Access Credential	An access code is an authentication credential used by a client to connect to the platform through a protocol such as AMQP. A pair of new access codes will be generated when this API is called.

Data Transfer Rule Management APIs

API	Description
Query the Rule Triggering Condition List	This API is used to query the rule condition list on the platform.
Create a Rule Triggering Condition	This API is used to create a rule condition on the platform.
Query a Rule Triggering Condition	This API is used to query the configuration of a specific rule condition on the platform.
Modify a Rule Triggering Condition	This API is used to modify the configuration of a specific rule condition on the platform.
Delete a Rule Triggering Condition	This API is used to delete a specific rule condition from the platform.
Query the Rule Action List	This API is used to query the rule action list on the platform.
Create a Rule Action	This API is used to create a rule action on the platform.
Query a Rule Action	This API is used to query the configuration of a specific rule action on the platform.
Modify a Rule Action	This API is used to modify a specific rule action on the platform.
Delete a Rule Action	This API is used to delete a specific rule action from the platform.

Data Transfer APIs

API	Description
Push a Device Status Change Notification	An application has created a rule about device status change notification on the platform. When the status of a device changes, the platform calls this API to push a notification to the application.
Push a Device Property Reporting Notification	An application has created a rule about device property reporting notification on the platform. When a device reports its property data, the platform calls this API to push a notification to the application.
Push a Device Message Status Change Notification	An application has created a rule about message status change notification on the platform. When the status of a device message changes, the platform calls this API to push a notification to the application.
Push a Batch Task Status Change Notification	An application has created a rule about batch task status change notification on the platform. When the status of a batch task changes, the platform calls this API to push a notification to the application.
Push a Device Message Reporting Notification	An application has created a rule about device message reporting notification on the platform. When a device reports a message, the platform calls this API to push a notification to the application.
Push a Device Addition Notification	An application has created a rule about device addition notification on the platform. When a device is added on the platform, the platform calls this API to push a notification to the application.
Push a Device Update Notification	An application has created a rule about device update notification on the platform. When a device is updated on the platform, the platform calls this API to push a notification to the application.
Push a Device Deletion Notification	An application has created a rule about device deletion notification on the platform. When a device is deleted from the platform, the platform calls this API to push a notification to the application.
Push a Product Addition Notification	An application has created a rule about product addition notification on the platform. When a product is added on the platform, the platform calls this API to push a notification to the application.
Push a Product Update Notification	An application has created a rule about product update notification on the platform. When a product is updated on the platform, the platform calls this API to push a notification to the application.
Push a Product Deletion Notification	An application has created a rule about product deletion notification on the platform. When a product is deleted from the platform, the platform calls this API to push a notification to the application.
Push an Asynchronous Device Command Status Change Notification	An application has created a rule about command status change notifications on the platform. When the status of a command changes, the platform calls this API to push a notification to the application.

Device Linkage Rule APIs

API	Description
Query the Rule List	This API is used to query the list of device linkage rules on the platform.
Creating a Rule	This API is used to create a device linkage rule on the platform.
Query a Rule	This API is used to query the configuration of a specific rule on the platform.
Modify a Rule	This API is used to modify the configuration of a specific rule on the platform.
Delete a Rule	This API is used to delete a specific rule from the platform.
Modify the Rule Status	This API is used to modify the status of a specific rule on the platform by activating or deactivating the rule.

Device Shadow APIs

API	Description
Query a Device Shadow	This API is used to query the device shadow of a specific device, including the desired device configurations (in the desired section) and the latest configurations reported by the device (in the reported section). Only LwM2M-based devices support the device shadow function, and only properties defined by LwM2M can be modified. User-defined properties cannot be modified.
Configure Desired Properties in a Device Shadow	This API is used by an application to configure the desired data (in the desired section) of the device shadow. When the device goes online, the application delivers the data to the device. The device shadow properties are coupled with the product model. The desired properties must be defined in the product model and can be delivered only when the method has the Write property. Only LwM2M-based devices support the device shadow function, and only properties defined by LwM2M can be modified. User-defined properties cannot be modified.

API

Description

Query a Device Shadow

This API is used to query the device shadow of a specific device, including the desired device configurations (in the desired section) and the latest configurations reported by the device (in the reported section). Only LwM2M-based devices support the device shadow function, and only properties defined by LwM2M can be modified. User-defined properties cannot be modified.

Configure Desired Properties in a Device Shadow

This API is used by an application to configure the desired data (in the desired section) of the device shadow. When the device goes online, the application delivers the data to the device. The device shadow properties are coupled with the product model. The desired properties must be defined in the product model and can be delivered only when the method has the Write property. Only LwM2M-based devices support the device shadow function, and only properties defined by LwM2M can be modified. User-defined properties cannot be modified.

Device Group Management APIs

API	Description
Query the Device Group List	This API is used to query the device group list on the platform.
Create a Device Group	This API is used to create a device group. A Huawei Cloud account can have a maximum of 1,000 groups, including parent and child groups.
Query a Device Group	This API is used to query details about a device group.
Modify a Device Group	This API is used to modify a specific device group.
Delete a Device Group	This API is used to delete a specific device group.
Manage Devices in a Device Group	This API is used to manage devices in a device group, including adding and deleting devices to and from a device group. A maximum of 20,000 devices can be added to a device group. A device can be bound to a maximum of 10 device groups.
Query Devices in a Device Group	This API is used to query the list of devices in a specific device group.

Tag Management APIs

API	Description
Bind Tags	This API is used to bind a tag to a specific resource. Currently, only devices can be bound with tags.
Unbind Tags	This API is used to unbind a tag from a specific resource. Currently, only devices can be unbound from tags.
Query Resources by Tag	This API is used to query resources bound with a specific tag.

Resource Space Management APIs

API	Description
Query the Resource Space List	A resource space corresponds to the original application of the platform. The meaning of the resource space in the platform is the same as that in the application. The only difference relies on the name. This API is used by an application to query the resource space list.
Create a Resource Space	A resource space corresponds to the original application of the platform. The meaning of the resource space in the platform is the same as that in the application. The only difference relies on the name. This API is used by an application to create a resource space.
Query a Resource Space	A resource space corresponds to the original application of the platform. The meaning of the resource space in the platform is the same as that in the application. The only difference relies on the name. This API is used by an application to query details about a specific resource space.
Delete a Resource Space	This API is used to delete a specific resource space. Deleting a resource space is a high-risk operation. After the resource space is deleted, resources such as products and devices in the space will be unavailable. Exercise caution when performing this operation.

Batch Task APIs

API	Description
Query the Batch Task List	This API is used to query the batch task list on the platform. Each task includes the task content, status, and completion statistics.
Create a Batch Task	This API is used to create a batch task to perform batch operations on multiple devices. Supported batch operations: Upgrading software and firmware, creating, modifying, deleting, freezing, unfreezing, and updating devices, creating commands and messages, and setting device shadow.
Query a Batch Task	This API is used to query information about a specific batch task on the platform, including the task content, status, completion statistics, and subtask list.
Delete a Batch Task	This API is used by an application to delete a completed batch task (successful, failed, partially successful, or stopped) from the platform.
Re-Execute a Batch Task	This API is used by an application to retry a batch task. Currently, task_type can only be set to firmwareUpgrade or softwareUpgrade. If the task specified by task_id is successful, stopped, being stopped, waiting, or being initialized, this API cannot be called.
Stop a Batch Task	This API is used by an application to stop a batch task. Currently, task_type can only be set to firmwareUpgrade or softwareUpgrade. If the task specified by task_id has been completed (successful, failed, partially successful, or stopped) or is being stopped, this API cannot be called.
Query the List of Batch Task Files	This API is used to query the batch task file list.
Upload a Batch Task File	This API is used to upload a batch task file to create a batch task. You can upload files of batch device creation, deletion, freezing, unfreezing tasks, and updating tasks.
Delete a Batch Task File	This API is used to delete a batch task file.

Device CA Certificate Management APIs

API	Description
Obtain the Device CA Certificate List	This API is used to obtain the device CA certificate list.
Upload a Device CA Certificate	This API is used to upload a device CA certificate.
Delete a Device CA Certificate	This API is used to delete a device CA certificate.
Verify a Device CA Certificate	This API is used to verify the CA certificate of a device. CA certificate verification checks whether the user has the private key of the CA certificate of the device.
Update a CA Certificate	This API is used to update a device CA certificate.

OTA Upgrade Package Management

API	Description
Create an OTA Upgrade Package	This API is used to create an OBS object associated with an upgrade package.
Query the OTA Upgrade Package List	This API is used to query the upgrade package associated with an OBS object.
Obtain OTA Upgrade Package Details	This API is used to query details about the upgrade package associated with an OBS object.
Delete an OTA Upgrade Package	This API is used to delete the upgrade package information associated with an OBS object. The OBS object will not be deleted.

Message Broadcasting

API	Description
Broadcasting a Message	This API is used by an application to broadcast a message to all online devices that subscribe to a specified topic.

Device Tunnel Management

API	Description
Create a Device Tunnel	This API is used by an application to create a tunnel.
Query All Tunnels of a Device	This API is used by an application to query all device tunnels.
Query Device Tunnels	This API is used by an application to query device tunnel details.
Disable a Device Tunnel	This API is used by an application to close a tunnel.
Delete a Device Tunnel	This API is used by an application to delete a tunnel.

Device Proxy

API	Description
Create a Device Proxy	This API is used by an application to call a device proxy.
Query Device Proxy List	This API is used by an application to query all device proxies.
Query Device Proxy Details	This API is used by an application to query device proxy details.
Modify a Device Proxy	This API is used by an application to modify a device proxy.
Delete a Device Proxy	This API is used by an application to delete a device proxy.

Bridge Management

API	Description
Create a Bridge	This API is used by an application to create a bridge.
Query the Bridge List	This API is used by an application to query all bridges.
Delete a Bridge	This API is used by an application to delete a bridge.
Reset the Bridge Secret	This API is used by an application to reset the bridge password.

Device policy management

API	Description
Create a Device Policy	This API is used by an application to create a device policy.
Query the Device Policy List	This API is used by an application to query all device policies.
Delete a Device Policy	This API is used by an application to delete a device policy.
Query Device Policy Details	This API is used by an application to query device policy details.
Update Device Policy Information	This API is used by an application to update device policy information.
Bind a Device Policy	This API is used by an application to bind a device policy.
Unbind a Device Policy	This API is used by an application to unbind a device policy.
Query the List of the Targets Bound to a Device Policy	This API is used by an application to query the list of targets bound to a device policy.

Pre-provisioning template management

API	Description
Create a Pre-provisioning Template	This API is used by an application to create a pre-provisioning template.
Query the Pre-provisioning Template List	This API is used by an application to query all created pre-provisioning templates.
Delete a Pre-provisioning Template	This API is used by an application to delete a pre-provisioning template.
Query Pre-provisioning Template Details	This API is used by an application to query details a pre-provisioning template.
Update Information About a Pre-provisioning Template with a Specified ID	This API is used by an application to update information about a pre-provisioning template with a specified ID.