Hiview

Introduction
Directory Structure
Constraints
Contribution
Usage
Repositories Involved

Introduction

Hiview is the module of OpenHarmony that provides toolkits for device maintenance across different platforms.

Currently, Hiview opens only the plug-in management platform and system event source capabilities.

Figure 1 Architecture of Hiview

Hiview consists of the following components:

adapter: operating system adaptation layer, which adapts APIs of the system services in use

hiview base: Hiview base definition, which provides the plug-in definition, detector definition, and utility class

hiview core: Hiview core module, which provides the plug-in configuration, plug-in management, and event source functions

hiview services: Hiview services. Currently, only the Hiview run information exporting function is provided.

plugins: Independent service modules.

Hiview works in event-driven mode. The core of Hiview is a collection of HiSysEvent stubs distributed in the system.

Formatted events are reported to Hiview through the HiSysEvent API for processing. Figure 2 shows the data interaction process.

Figure 2 Data interaction between Hiview modules

The application framework and system services report system events using the HiSysEvent API.
HiSysEventSource reads events and prints the events to logs.

Directory Structure

The code directory structure of Hiview is as follows:

/base/hiviewdfx/hiview
├── adapter             # Platform adaptation code
│   └── service        # Service adaptation code
├── base                # Module definition and utility class
│   └── utility
├── build               # Compilation scripts
├── include             # Common definitions
├── core                # Plug-in management
└── service             # Platform services