gurixandClaude Opus 4.6
6610366c2f
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
95 lines
4.3 KiB
Markdown
95 lines
4.3 KiB
Markdown
---
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phase: 07-custom-rules-and-print-config
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plan: "01"
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subsystem: config
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tags: [config, rules, tdd, classification, auto-freq]
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dependency_graph:
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requires: []
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provides: [LoadResult, RawRule, validateRules, convertRules, autoAssignFreq, addAutoFreqEntries]
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affects: [cmd/netsynth/main.go]
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tech_stack:
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added: ["hash/fnv"]
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patterns: [LoadResult-struct, FNV-32a-deterministic-hash, TDD-red-green]
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key_files:
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created: []
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modified:
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- config/config.go
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- config/config_test.go
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- cmd/netsynth/main.go
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decisions:
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- "addAutoFreqEntries runs before merge so [sounds.X] overrides apply to user-defined classes"
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- "merge() warning for unknown class names still fires for [sounds.X] where X is neither built-in nor in [[rules]] -- acceptable harmless warning"
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- "main.go call site updated to use LoadResult.FreqCfgs -- minimal fix to keep compile; full wiring deferred to Plan 02"
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metrics:
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duration: 3min
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completed: "2026-03-26T20:45:08Z"
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tasks_completed: 1
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files_modified: 3
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---
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# Phase 7 Plan 01: Config Rule Parsing and LoadResult Summary
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Extend config package to parse `[[rules]]` TOML blocks, validate them, auto-assign frequencies for new class names using FNV-32a, and return a `LoadResult` struct from `Load()`.
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## What Was Built
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`config.Load()` now returns `LoadResult{FreqCfgs, UserRules, ConfigPath}` instead of a bare map. The new struct is the data contract for Plan 02's CLI wiring and `--print-config` output.
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**New types and functions in config/config.go:**
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- `RawRule` struct: `Port *uint16`, `Protocol string`, `Class string` — pointer Port to distinguish missing vs zero
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- `LoadResult` struct: `FreqCfgs`, `UserRules []classify.Rule`, `ConfigPath string`
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- `validateRules()`: checks protocol required, class required, valid protocols (tcp/udp/icmp)
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- `convertRules()`: converts `[]RawRule` to `[]classify.Rule`
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- `autoAssignFreq()`: FNV-32a hash → deterministic Hz in [1200, 2350] range (24 steps of 50Hz)
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- `addAutoFreqEntries()`: creates `FreqConfig` entries for new class names, skips built-ins
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- Import: `hash/fnv`
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**Key operation order:** `addAutoFreqEntries` runs before `merge` so that `[sounds.MyApp]` sound overrides apply to user-defined classes that were added by auto-freq.
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## Tasks Completed
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| Task | Name | Commit | Files |
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|------|------|--------|-------|
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| 1 | RawRule, LoadResult, validation, conversion, auto-freq with TDD | 4b365cd | config/config.go, config/config_test.go, cmd/netsynth/main.go |
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## Deviations from Plan
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### Auto-fixed Issues
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**1. [Rule 1 - Bug] Operation order: addAutoFreqEntries must run before merge**
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- **Found during:** Task 1 GREEN phase
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- **Issue:** Plan's action section said "merge first, then addAutoFreqEntries" but this caused [sounds.MyApp] overrides to be ignored for user-defined classes (merge only applies to classes already in the map)
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- **Fix:** Reversed the order — addAutoFreqEntries first (creates the entry), then merge (applies sound overrides)
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- **Files modified:** config/config.go
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- **Commit:** 4b365cd
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**2. [Rule 3 - Blocking] main.go call site updated to use LoadResult**
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- **Found during:** Task 1 GREEN phase
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- **Issue:** Plan notes this break is expected but tests wouldn't compile without it
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- **Fix:** Minimal one-line update: `loadResult, err := config.Load(...)` + `freqCfgs := loadResult.FreqCfgs`
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- **Files modified:** cmd/netsynth/main.go
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- **Commit:** 4b365cd
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## Test Coverage
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21 tests total (8 existing + 13 new):
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- `TestLoadCustomRules` - TOML [[rules]] block with port/protocol/class
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- `TestLoadCustomRuleNoPort` - optional port field, DstPort=0 when absent
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- `TestLoadCustomRuleMissingProtocol` - validation error "protocol is required"
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- `TestLoadCustomRuleMissingClass` - validation error "class is required"
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- `TestLoadCustomRuleInvalidProtocol` - validation error "invalid protocol"
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- `TestLoadCustomRuleUnknownField` - undecoded TOML field error
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- `TestUserRulesPrepend` - UserRules field usable for prepend pattern
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- `TestAutoFreqAssignment` - BaseHz in [1200, 2350], WaveformSine
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- `TestAutoFreqDeterministic` - same class name produces same Hz
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- `TestAutoFreqSkipsBuiltins` - HTTPS stays at 175.0 default
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- `TestLoadResultConfigPath` - ConfigPath populated correctly
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- `TestLoadNoConfigReturnsLoadResult` - returns LoadResult with empty UserRules
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- All 8 existing tests updated to use `result.FreqCfgs`
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## Known Stubs
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None. All new functions are fully implemented and tested.
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## Self-Check: PASSED
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