gsmlg-dev / elixir_caddy / d523ff0f3d97e33c5e409327e3b4e18cbb2a36a0-PR-6

70%

main: 54%

Pull #6

github

feat: implement dynamic config support with matchers, env vars, named matchers, routes, and plugins

Add comprehensive support for dynamic Caddy configuration:

## Matcher Types (15 total)
- Path, PathRegexp: Route path matching with regex support
- Header, HeaderRegexp: HTTP header matching with regex
- Method: HTTP method matching (GET, POST, etc)
- Query: Query parameter matching
- Host: Hostname matching
- Protocol: Protocol matching (http, https, grpc)
- RemoteIp, ClientIp: IP range matching
- Vars, VarsRegexp: Variable matching with regex
- Expression: CEL expression matching
- File: File existence matching
- Not: Negate any matcher

## Core Features
- EnvVar: {$VAR} and {$VAR:default} environment variable syntax
- NamedMatcher: @name syntax to compose matchers with AND logic
- NamedRoute: &(name) syntax for reusable route definitions
- PluginConfig: Type-safe plugin configuration support

## Implementation Details
- All 44 new modules implement Caddy.Caddyfile protocol
- All modules emit telemetry events for observability
- All validation functions return {:ok, value}/{:error, reason}
- Comprehensive test coverage: 446 tests, 0 failures
- Code formatted with mix format
- Follows project constitution and existing patterns

## Files Added
- lib/caddy/config/env_var.ex (24 tests)
- lib/caddy/config/named_matcher.ex (20 tests)
- lib/caddy/config/named_route.ex (22 tests)
- lib/caddy/config/plugin_config.ex (24 tests)
- lib/caddy/config/matcher/ (15 matcher types)
- test/caddy/config/matcher/ (15 test files)
- specs/002-expand-dynamic-config/ (feature documentation)

## Status
- Phase 1: Setup ✅
- Phase 2: Foundational (15 matchers) ✅
- Phase 3: US1 Environment Variables ✅
- Phase 4: US2 Named Matchers ✅ (struct complete)
- Phase 5: US3 Named Routes ✅ (struct complete)
- Phase 7: US5 Plugin Configuration ✅
- Phase 8: Polish ✅

Site/Config integration tasks (T039, T044-T046, T048, T053-T054) remain for future work.

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