Kura APIs

Frequently Asked Questions
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Link [Kura APIs](Overview - Eclipse Kura™ Documentation)

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Eclipse Kura provides a comprehensive set of APIs (Application Programming Interfaces) that developers can use to interact with and build applications for IoT (Internet of Things) gateways. These APIs allow developers to access various functionalities and services within the Kura framework, enabling them to create powerful and flexible IoT solutions. Some of the key APIs offered by Eclipse Kura are Configuration API, Data Service API, Cloud Service API, MQTT API, Device Access API, Deployment Admin API, Remote Services API.

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Configuration API:

  • Purpose: The Configuration API allows developers to manage configuration data for various components and services in the Kura framework. It provides a standardized way to read, write, and modify configuration settings, making it easier to adapt IoT applications to specific requirements.
  • How it works: The Configuration API represents configuration data in a hierarchical structure, and it is often implemented using the OSGi Configuration Admin Service, a part of the OSGi (Open Service Gateway initiative) framework. Configuration data is typically stored in a persistent storage area, and it can be managed through the Kura web interface or programmatically using Java code.
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Data Service API:

  • Purpose: The Data Service API facilitates the collection, storage, and retrieval of data from IoT devices and sensors. It enables developers to publish and subscribe to data streams and manage data persistence.
  • How it works: The Data Service API allows IoT applications to send data to the cloud or other gateways for remote storage and analysis. It supports various data formats and communication protocols to cater to diverse IoT use cases.

Cloud Service API:

  • Purpose: The Cloud Service API enables communication with cloud platforms, allowing data to be sent from the gateway to the cloud or for receiving commands and configurations from the cloud.
  • How it works: The Cloud Service API abstracts the complexities of cloud communication, allowing developers to integrate their IoT applications with cloud platforms seamlessly. It supports popular cloud protocols and APIs.

MQTT API:

  • Purpose: The MQTT (Message Queuing Telemetry Transport) API allows lightweight messaging and data exchange between devices and the gateway or cloud.
  • How it works: MQTT is a popular messaging protocol for IoT devices due to its low overhead and efficiency. The MQTT API in Kura allows developers to easily implement MQTT-based communication in their IoT applications.

Device Access API:

  • Purpose: The Device Access API provides access to various hardware resources on the gateway, such as GPIO (General Purpose Input/Output) pins, serial ports, and other peripheral devices.
  • How it works: The Device Access API enables developers to interact with hardware resources directly, allowing them to read sensor data, control actuators, and communicate with external devices.

Deployment Admin API:

  • Purpose: The Deployment Admin API helps manage software deployment on the gateway, allowing developers to install, update, and remove OSGi bundles (modules) on the fly.
  • How it works: This API provides programmatic control over the installation and management of software modules on the gateway, enabling easy updates and maintenance of IoT applications.

Remote Services API:

  • Purpose: The Remote Services API enables communication and interaction between different Kura instances running on separate gateways, allowing them to share services and data.
  • How it works: The Remote Services API allows IoT applications to collaborate and share resources across a distributed IoT environment, providing a seamless and scalable ecosystem for managing multiple gateways.
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