Overview
ISO/IEC 23004-6:2008 defines the Fault Management component of the MPEG Multimedia Middleware (M3W) family. The standard specifies the Fault Management API and the realization technology used to add fault tolerance to M3W platforms. Fault Management is an optional M3W framework designed to make multimedia middleware systems more dependable and reliable in the presence of faults introduced by upgrades, extensions, complex configurations, or untrusted third-party components.
Key principles:
- Non‑intrusive fault tolerance by wrapping untrusted services (no modification of components).
- Use of a Middleman (wrapper) to intercept and redirect service instantiation and interface invocations.
- Coordination between multiple Middlemans via a Fault Manager.
- Support for error detection, confinement and recovery; interaction with System Integrity Management for fault removal.
Key Topics and Requirements
- API specification: Defines the M3W Fault Management interfaces that present a uniform view of fault management functionality.
- Middleman pattern: Middlemans (wrappers) intercept service creation and method calls to implement fault-tolerance techniques transparently.
- Fault Manager coordination: Interfaces and mechanisms to coordinate fault handling across multiple Middlemans.
- Realization guidance: Concepts, roles, assumptions, entities and responsibilities required for implementing the framework (realization overview and detailed realization).
- Fault handling goals: Detect errors, confine propagation, and recover services to avoid system-level failures.
- Compatibility: Designed to integrate with other M3W parts (architecture, component model, system integrity) without requiring component redesign.
- Scope limit: The standard defines mechanisms and interfaces; specific fault‑tolerance techniques (algorithms, recovery strategies) are system-dependent and out of scope.
Practical Applications
ISO/IEC 23004-6 is practical for:
- Embedding fault management into existing multimedia middleware deployments to increase robustness.
- Wrapping and protecting third-party or dynamically downloaded components that cannot be fully trusted or exhaustively tested.
- Implementing runtime frameworks that need transparent error interception, recovery and coordination across components.
- Supporting deployment scenarios where component upgrades/extensions may introduce unpredictable faults.
Typical use cases:
- Consumer devices running complex multimedia stacks that load external components/plugins.
- Streaming platforms requiring high availability despite heterogeneous component sources.
- Middleware vendors implementing standardized APIs for fault handling and integration with system integrity services.
Who should use this standard
- Middleware architects and developers
- System integrators and platform vendors
- QA and reliability engineers working on multimedia systems
- Implementers of M3W-compliant middleware or fault-tolerant wrappers
Related Standards
Keywords: ISO/IEC 23004-6, M3W, Fault Management, multimedia middleware, Middleman, Fault Manager, fault tolerance, API, wrapper, error detection, recovery, system integrity.
