[CONF] Apache Qpid: Qpid Management Framework (page edited)

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Page Edited : qpid : Qpid Management Framework Qpid Management Framework has been edited by Ted Ross (Jan 30, 2009). (View changes) Content: What Is QMF Getting Started with QMF QMF Concepts How to Write a QMF Console How to Write a QMF Agent What Is QMF QMF (Qpid Management Framework) is a general-purpose management bus built on Qpid Messaging. It takes advantage of the scalability, security, and rich capabilities of Qpid to provide flexible and easy-to-use manageability to a large set of applications. Getting Started with QMF QMF is used through two primary APIs. The console API is used for console applications that wish to access and manipulate manageable components through QMF. The agent API is used for application that wish to be managed through QMF. The fastest way to get started with QMF is to work through the "How To" tutorials for consoles and agents. For a deeper understanding of what is happening in the tutorials, it is recommended that you look at the Qmf Concepts section. QMF Concepts This section introduces important concepts underlying QMF. Console, Agent, and Broker The major architectural components of QMF are the Console, the Agent, and the Broker. Console components are the "managing" components of QMF and agent components are the "managed" parts. The broker is a central (possibly distributed, clustered and fault-tolerant) component that manages name spaces and caches schema information. A console application may be a command-line utility, a three-tiered web-based GUI, a collection and storage device, a specialized application that monitors and reacts to events and conditions, or anything else somebody wishes to develop that uses QMF management data. An agent application is any application that has been enhanced to allow itself to be managed via QMF. +-------------+ +---------+ +---------------+ +-------------------+ | CLI utility | | Web app | | Audit storage | | Event correlation | +-------------+ +---------+ +---------------+ +-------------------+ ^ ^ ^ ^ | | | | | | v v v v v +---------------------------------------------------------------------------------+ | Qpid Messaging Bus (with QMF Broker capability) | +---------------------------------------------------------------------------------+ ^ ^ ^ | | | v v v +----------------+ +----------------+ +----------------+ | Manageable app | | Manageable app | | Manageable app | +----------------+ +----------------+ +----------------+ In the above diagram, the Manageable apps are agents, the CLI utility, Web app, and Audit storage are consoles, and Event correlation is both a console and an agent because it can create events based on the aggregation of what it sees. Schema A schema describes the structure of management data. Each agent provides a schema that describes its management model including the object classes, methods, events, etc. that it provides. In the current QMF distribution, the agent's schema is codified in an XML document. In the near future, there will be ways to programatically create QMF schemata. Package Each agent that exports a schema identifies itself using a package name. The package provides a unique namespace for the classes in the agent's schema that prevent collisions with identically named classes in other agents' schemata. Package names are in "reverse domain name" form with levels of hierarchy separated by periods. For example, the Qpid messaging broker uses package "org.apache.qpid.broker" and the Access Control List plugin for the broker uses package "org.apache.qpid.acl". In general, the package name should be the reverse of the internet domain name assigned to the organization that owns the agent software. Object Classes Properties, Statistics, and Methods Data Types Event Classes Object Identifiers Class Keys and Class Versioning How to Write a QMF Console Please see the QMF Python Console Tutorial for information about using the console API with Python. How to Write a QMF Agent

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