ada-virt-monitor

A virtual machine manager with bindings to libvirt written in Ada

Table of Contents

• Work in progress
• Contacting the author
• Compiling
  • Prerequisites
  • Compilation
• Structure
  • The libvirt interface
• Contributing

Work In Progress

This program and the related libraries are a work in progress, so expect it be updated often and do not rely on any backward compatibility.

Contacting the author

Mail me at ada-virt-monitor<at>homebrewinternet.it

Compiling

The program is being developed and tested under ubuntu (18.04 LTS). It can be compiled and run under FreeBSD also.

Prerequisites

ubuntu packages:

• gnat
• gprbuild
• libvirt-dev
• libgtkada16.1.0-dev
• libxmlada development libraries (libxmlada-*-dev)
• libncursesada5-dev (needed only to compile the test program linemonitor.adb. If you don't need it remove the program and the dependency from avm.gpr)
• libvirt0
• netcat
• ssk-askpass
• any dependency from the packages above

Compilation

Go to directory avm.

Run gprbuild -P avm.gpr.

Structure

The basic idea is to define an engine ("monitor") managing a dynamic structure with the information related to defined hypervisor and their status. A task periodically upgrades the informations (status of virtual machines, statistics, etc.)

Hypervisors are divided into groups, so that different kind of hypervisors can be keep separated.

A default group is ever present.

The user interface interacts with the monitor through the functions in the library. Different user interfaces could be developed.

Currently the interface is a gtkada one (directory gui).

A simpler textual interface is the program linemonitor in directory tests.

The libvirt interface

The files libvirt_*_api.ads are binding to libvirt C function. They are compiler-generated with some tweaking.

The files virtada-* are a partial thick binding to libvirt.

They define Ada tagged types and methods to interact with libvirt.

Contributing

Contributions in any form (suggestions, criticisms, code ...) are welcome.

We only ask you to follow some simple guidelines.

• Keep the library at Ada 2005 syntax.
• Do not interface the monitor with libvirt C functions. Use virtada instead
• Do not interface the UI with virtada. Interface with the monitor.

If you are interested in in being added to contributor list mail us at the address above.