jedarden d8d81a12a8 P6.10 Wire §14.8 resource-aware config defaults into Rust + values.yaml

Complete acceptance criteria:
- Each §14.8 key present in crates/miroir-core/src/config/ with documented default
- charts/miroir/values.yaml exposes the same keys with identical defaults
- values.schema.json accepts documented ranges; cross-field validation in _helpers.tpl
- K8s resources block matches §14.8 (500m/2000m CPU, 1Gi/3584Mi mem)
- Unit test: section_14_8_defaults_match compares Config::default() to §14.8 reference
- Drift guard: doc-test at top of MiroirConfig struct validates defaults

All defaults sized for 2 vCPU / 3.75 GB envelope per plan §14.8.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

2026-05-20 07:35:03 -04:00

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P6.10 Wire §14.8 resource-aware config defaults - Verification Summary

Task: bf-4w08

Verified that all §14.8 resource-aware configuration defaults are properly wired into Rust code and Helm chart.

Acceptance Criteria Status

1. Each §14.8 key present in `crates/miroir-core/src/config/` with documented default

✅ server: max_body_bytes: 104857600, max_concurrent_requests: 500, request_timeout_ms: 30000
✅ connection_pool_per_node: max_idle: 32, max_total: 128, idle_timeout_s: 60
✅ task_registry: cache_size: 10000, redis_pool_max: 50
✅ idempotency: max_cached_keys: 1000000, ttl_seconds: 86400
✅ session_pinning: max_sessions: 100000
✅ query_coalescing: max_subscribers: 1000, max_pending_queries: 10000
✅ anti_entropy: max_read_concurrency: 2, fingerprint_batch_size: 1000
✅ resharding: backfill_concurrency: 4, backfill_batch_size: 1000
✅ peer_discovery: service_name: "miroir-headless", refresh_interval_s: 15
✅ leader_election: enabled: true, lease_ttl_s: 10, renew_interval_s: 3

2. `charts/miroir/values.yaml` exposes same keys with identical defaults

✅ All §14.8 defaults present in values.yaml (lines 69-120)
✅ Values match plan §14.8 exactly

3. `values.schema.json` accepts documented ranges; rejects nonsense

✅ Schema defines all §14.8 properties with appropriate types
✅ Cross-field validation for lease_ttl_s > renew_interval_s in _helpers.tpl
✅ JSON Schema rules 0-6 enforce HA requirements (replicas > 1 requires redis, etc.)

4. K8s resources block matches §14.8 (500m/2000m CPU, 1Gi/3584Mi mem)

✅ values.yaml resources block (lines 47-53):
- requests: cpu: 500m, memory: 1Gi
- limits: cpu: 2000m, memory: 3584Mi
✅ Deployment template uses these via {{ .Values.miroir.resources }}

5. Unit test: drift guard comparing Config::default() to §14.8 reference

✅ Test section_14_8_defaults_match in crates/miroir-core/src/config.rs (lines 685-728)
✅ Test passes: all defaults verified against §14.8 values

6. Drift guard: doc-test comparing Config::default() to §14.8 reference

✅ Doc-test at top of MiroirConfig struct (lines 21-45 in config.rs)
✅ Doc-test passes with cargo test --doc

Test Results

$ cargo test section_14_8_defaults_match --lib
test config::tests::section_14_8_defaults_match ... ok

test result: ok. 1 passed; 0 failed

Files Verified

crates/miroir-core/src/config.rs - Core config struct with defaults
crates/miroir-core/src/config/advanced.rs - Advanced feature configs
charts/miroir/values.yaml - Helm chart values with §14.8 defaults
charts/miroir/values.schema.json - JSON Schema validation
charts/miroir/templates/_helpers.tpl - Cross-field validation
charts/miroir/templates/miroir-deployment.yaml - Resources block

Conclusion

All §14.8 resource-aware configuration defaults are properly wired and validated. The drift guard test and doc-test ensure defaults cannot drift from the plan without failing CI.

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