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Compile & Artifact Pipeline

Summary​

The Compile & Artifact Pipeline transforms approved policy definitions into optimized runtime artifacts. It validates policy syntax, resolves references between policies, and generates immutable snapshots that runtime components can evaluate efficiently.

Why It Exists​

Policy definitions authored in Admin Console are designed for human readability and maintainability. Runtime evaluation requires:

  • Validation — Syntax errors and invalid references must be caught before deployment
  • Optimization — Policies must be transformed for efficient runtime evaluation
  • Immutability — Deployed artifacts must not change unexpectedly
  • Reproducibility — The same policy definition must produce identical artifacts

The Compile & Artifact Pipeline ensures policies meet these requirements before distribution.

Where It Fits in Keymate​

The pipeline operates between Policy Lifecycle & Governance and Distribution & Activation:

Boundaries​

This component handles:

  • Policy syntax validation
  • Reference resolution between policies
  • Artifact generation and optimization
  • Snapshot creation and versioning
  • Validation against authorization topology

This component does not handle:

  • Governance approval workflows (Policy Lifecycle & Governance)
  • Runtime policy evaluation (Policy Engine)
  • Artifact distribution to runtime components (Distribution & Activation)

How It Works​

Compilation Stages​

Parse​

The pipeline parses policy definitions and constructs an internal representation for processing.

Validate​

Validation checks include:

  • Syntax correctness
  • Required field presence
  • Value constraints (e.g., valid operators, valid attribute types)
  • Policy type-specific rules

Resolve References​

Policies may reference:

  • Other policies (for composite PBAC policies)
  • Policy templates
  • Shared attributes and expressions

The resolver ensures all references point to valid, accessible entities.

Optimize​

Optimization transforms policies for efficient runtime evaluation. The specific optimizations depend on policy type and target runtime component.

Generate Snapshot​

The final stage creates an immutable snapshot containing:

  • Compiled policy artifact
  • Version identifier
  • Compilation metadata
  • Checksum for integrity verification

Snapshot Properties​

PropertyDescription
ImmutableSnapshots cannot be modified after creation
VersionedEach snapshot has a unique version identifier
ReproducibleSame input produces identical output
VerifiableChecksums enable integrity verification

Validation Errors​

When validation fails, the pipeline:

  1. Records the specific errors
  2. Transitions the policy back to draft state
  3. Notifies the policy author
  4. Generates an audit event

Diagram​

Example Scenario​

Scenario​

A policy author submits an ABAC policy that references a shared attribute expression. The policy passes governance approval and enters compilation.

Input​

  • Actor: Compile & Artifact Pipeline
  • Resource: Approved ABAC policy with shared expression reference
  • Action: Compile
  • Context: Policy references "user.department" shared expression

Expected Outcome​

  • Result: Immutable snapshot generated with resolved expression
  • Why: Shared expression resolved, validation passed, optimization complete

Common Misunderstandings​

  • Compilation modifies the source policy — The source policy remains unchanged; compilation produces a separate artifact
  • Any change requires recompilation — Only changes that affect evaluation logic require recompilation; metadata changes may not
warning

Compilation failures block distribution. Review validation errors carefully before resubmitting policies.

Design Notes / Best Practices​

  • Use policy templates for frequently used patterns to reduce compilation complexity
  • Validate policies in development environments before promoting to production
  • Monitor compilation metrics to identify slow or problematic policies
tip

Keep policies focused and simple. Complex policies with many references take longer to compile and are harder to debug.

  • Policy validation before deployment
  • Policy versioning and artifact management
  • Reproducible policy builds across environments
  • Integrity verification for deployed policies

Policy Lifecycle & Governance

How policies reach the compilation stage

Distribution & Activation

How compiled artifacts reach runtime

Policy Model

Policy structure and types