510 lines
22 KiB
Markdown
510 lines
22 KiB
Markdown
# Tasks: Fiber Middleware Integration with Configuration Management
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**Feature**: 001-fiber-middleware-integration
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**Input**: Design documents from `/specs/001-fiber-middleware-integration/`
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**Prerequisites**: plan.md, spec.md, research.md, data-model.md, contracts/api.yaml
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**Tests**: Unit and integration tests are REQUIRED per constitution testing standards (70%+ overall, 90%+ core business)
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**Organization**: Tasks are grouped by user story to enable independent implementation and testing of each story.
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## Format: `- [ ] [ID] [P?] [Story?] Description`
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- **[P]**: Can run in parallel (different files, no dependencies)
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- **[Story]**: Which user story this task belongs to (e.g., US1, US2, US3)
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- Include exact file paths in descriptions
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---
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## Phase 1: Setup (Shared Infrastructure)
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**Purpose**: Project initialization and basic structure
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- [ ] T001 Create directory structure: pkg/config/, pkg/logger/, pkg/response/, pkg/errors/, pkg/constants/, pkg/validator/, internal/middleware/, configs/, logs/
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- [ ] T002 [P] Setup unified error codes and messages in pkg/errors/codes.go
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- [ ] T003 [P] Setup custom error types in pkg/errors/errors.go
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- [ ] T004 [P] Setup unified response structure in pkg/response/response.go
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- [ ] T005 [P] Setup response code constants in pkg/response/codes.go
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- [ ] T006 [P] Setup business constants in pkg/constants/constants.go
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- [ ] T007 [P] Setup Redis key generation functions in pkg/constants/redis.go
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---
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## Phase 2: Foundational (Blocking Prerequisites)
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**Purpose**: Core infrastructure that MUST be complete before ANY user story can be implemented
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**⚠️ CRITICAL**: No user story work can begin until this phase is complete
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### Configuration Management (US1 Foundation)
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- [ ] T008 Create Config structures with Viper mapstructure tags in pkg/config/config.go
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- [ ] T009 Implement config loading with validation in pkg/config/loader.go
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- [ ] T010 Implement config hot reload with fsnotify in pkg/config/watcher.go
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- [ ] T011 Create default configuration file in configs/config.yaml
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- [ ] T012 [P] Create environment-specific configs: config.dev.yaml, config.staging.yaml, config.prod.yaml
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### Logging Infrastructure (US2 Foundation)
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- [ ] T013 Initialize Zap logger with JSON encoder in pkg/logger/logger.go
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- [ ] T014 Setup Lumberjack rotation for app.log in pkg/logger/rotation.go
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- [ ] T015 Setup Lumberjack rotation for access.log in pkg/logger/rotation.go
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- [ ] T016 Create Fiber logger middleware adapter in pkg/logger/middleware.go
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### Redis Connection (US6 Foundation)
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- [ ] T017 Setup Redis client with connection pool configuration in pkg/validator/redis.go or pkg/database/redis.go
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**Checkpoint**: Foundation ready - user story implementation can now begin in parallel
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---
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## Phase 3: User Story 1 - Configuration Hot Reload (Priority: P1) 🎯 MVP
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**Goal**: Enable runtime configuration updates without service restart
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**Independent Test**: Modify config.yaml while server runs, verify changes applied within 5 seconds without restart
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### Unit Tests for User Story 1
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- [ ] T018 [P] [US1] Unit test for config loading and validation in pkg/config/loader_test.go
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- [ ] T019 [P] [US1] Unit test for config hot reload mechanism in pkg/config/watcher_test.go
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- [ ] T020 [P] [US1] Test invalid config handling (malformed YAML, validation errors) in pkg/config/config_test.go
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### Implementation for User Story 1
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- [ ] T021 [US1] Implement atomic config pointer swap in pkg/config/config.go (sync/atomic usage)
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- [ ] T022 [US1] Implement config change callback with validation in pkg/config/watcher.go
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- [ ] T023 [US1] Add config reload logging with Zap in pkg/config/watcher.go
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- [ ] T024 [US1] Integrate config watcher with context cancellation in cmd/api/main.go
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- [ ] T025 [US1] Add graceful shutdown for config watcher in cmd/api/main.go
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**Checkpoint**: Config hot reload should work independently - modify config and see changes applied
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---
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## Phase 4: User Story 2 - Structured Logging and Log Rotation (Priority: P1)
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**Goal**: Production-ready JSON logging with automatic rotation and separate app/access logs
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**Independent Test**: Generate logs, verify JSON format in app.log and access.log, trigger rotation by size
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### Unit Tests for User Story 2
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- [ ] T026 [P] [US2] Unit test for logger initialization in pkg/logger/logger_test.go
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- [ ] T027 [P] [US2] Unit test for log rotation configuration in pkg/logger/rotation_test.go
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- [ ] T028 [P] [US2] Test structured logging with fields in pkg/logger/logger_test.go
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### Implementation for User Story 2
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- [ ] T029 [P] [US2] Create appLogger instance with Lumberjack writer in pkg/logger/logger.go
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- [ ] T030 [P] [US2] Create accessLogger instance with separate Lumberjack writer in pkg/logger/logger.go
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- [ ] T031 [US2] Configure JSON encoder with RFC3339 timestamps in pkg/logger/logger.go
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- [ ] T032 [US2] Export GetAppLogger() and GetAccessLogger() functions in pkg/logger/logger.go
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- [ ] T033 [US2] Add logger.Sync() call in graceful shutdown in cmd/api/main.go
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**Checkpoint**: Both app.log and access.log should exist with JSON entries, rotate at configured size
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---
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## Phase 5: User Story 3 - Unified API Response Format (Priority: P1)
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**Goal**: Consistent response structure across all endpoints
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**Independent Test**: Call any endpoint, verify response has {code, data, msg, timestamp} structure
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### Unit Tests for User Story 3
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- [ ] T034 [P] [US3] Unit test for Success() response helper in pkg/response/response_test.go
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- [ ] T035 [P] [US3] Unit test for Error() response helper in pkg/response/response_test.go
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- [ ] T036 [P] [US3] Test response serialization with sonic JSON in pkg/response/response_test.go
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### Implementation for User Story 3
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- [ ] T037 [P] [US3] Implement Success() helper function in pkg/response/response.go
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- [ ] T038 [P] [US3] Implement Error() helper function in pkg/response/response.go
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- [ ] T039 [P] [US3] Implement SuccessWithMessage() helper function in pkg/response/response.go
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- [ ] T040 [US3] Configure Fiber to use sonic as JSON serializer in cmd/api/main.go
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- [ ] T041 [US3] Create example health check endpoint using response helpers in internal/handler/health.go
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- [ ] T042 [US3] Register health check route in cmd/api/main.go
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**Checkpoint**: Health check endpoint returns unified response format with proper structure
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---
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## Phase 6: User Story 4 - Request Logging and Tracing (Priority: P2)
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**Goal**: Unique UUID v4 request ID for every request with comprehensive access logging
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**Independent Test**: Make requests, verify each has unique X-Request-ID header and appears in logs
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### Integration Tests for User Story 4
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- [ ] T043 [P] [US4] Integration test for requestid middleware (UUID v4 generation) in tests/integration/middleware_test.go
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- [ ] T044 [P] [US4] Integration test for logger middleware (access log entries) in tests/integration/middleware_test.go
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- [ ] T045 [P] [US4] Test request ID propagation through middleware chain in tests/integration/middleware_test.go
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### Implementation for User Story 4
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- [ ] T046 [P] [US4] Configure Fiber requestid middleware with google/uuid in cmd/api/main.go
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- [ ] T047 [US4] Implement custom logger middleware writing to accessLogger in internal/middleware/logger.go
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- [ ] T048 [US4] Add request ID to Fiber Locals in logger middleware in internal/middleware/logger.go
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- [ ] T049 [US4] Add X-Request-ID response header in logger middleware in internal/middleware/logger.go
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- [ ] T050 [US4] Log request details (method, path, status, duration, IP, user_agent) to access.log in internal/middleware/logger.go
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- [ ] T051 [US4] Register requestid and logger middleware in correct order in cmd/api/main.go
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**Checkpoint**: Every request should have unique UUID v4 in header and access.log, with full request details
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---
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## Phase 7: User Story 5 - Automatic Error Recovery (Priority: P2)
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**Goal**: Recover from panics, log stack trace, return error response, continue serving requests
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**Independent Test**: Trigger panic in handler, verify server doesn't crash, returns 500, logs stack trace
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### Integration Tests for User Story 5
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- [ ] T052 [P] [US5] Integration test for panic recovery in tests/integration/middleware_test.go
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- [ ] T053 [P] [US5] Test panic logging with stack trace in tests/integration/middleware_test.go
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- [ ] T054 [P] [US5] Test subsequent requests after panic recovery in tests/integration/middleware_test.go
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### Implementation for User Story 5
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- [ ] T055 [US5] Implement custom recover middleware with Zap logging in internal/middleware/recover.go
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- [ ] T056 [US5] Add stack trace capture to recover middleware in internal/middleware/recover.go
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- [ ] T057 [US5] Add request ID to panic logs in internal/middleware/recover.go
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- [ ] T058 [US5] Return unified error response (500, code 1000) on panic in internal/middleware/recover.go
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- [ ] T059 [US5] Register recover middleware as FIRST middleware in cmd/api/main.go
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- [ ] T060 [US5] Create test panic endpoint for testing in internal/handler/test.go (optional, for quickstart validation)
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**Checkpoint**: Panic in handler should be caught, logged with stack trace, return 500, server continues running
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---
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## Phase 8: User Story 6 - Token-Based Authentication (Priority: P2)
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**Goal**: Validate authentication tokens against Redis, enforce access control
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**Independent Test**: Request with valid/invalid/missing token, verify 200/401 responses with correct error codes
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### Unit Tests for User Story 6
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- [ ] T061 [P] [US6] Unit test for TokenValidator.Validate() with valid token in pkg/validator/token_test.go
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- [ ] T062 [P] [US6] Unit test for expired/invalid token (redis.Nil) in pkg/validator/token_test.go
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- [ ] T063 [P] [US6] Unit test for Redis unavailable (fail closed) in pkg/validator/token_test.go
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- [ ] T064 [P] [US6] Unit test for context timeout in Redis operations in pkg/validator/token_test.go
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### Integration Tests for User Story 6
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- [ ] T065 [P] [US6] Integration test for keyauth middleware with valid token in tests/integration/auth_test.go
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- [ ] T066 [P] [US6] Integration test for missing token (401, code 1001) in tests/integration/auth_test.go
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- [ ] T067 [P] [US6] Integration test for invalid token (401, code 1002) in tests/integration/auth_test.go
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- [ ] T068 [P] [US6] Integration test for Redis down (503, code 1004) in tests/integration/auth_test.go
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### Implementation for User Story 6
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- [ ] T069 [US6] Create TokenValidator struct with Redis client in pkg/validator/token.go
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- [ ] T070 [US6] Implement TokenValidator.Validate() with Redis GET operation in pkg/validator/token.go
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- [ ] T071 [US6] Add context timeout (50ms) for Redis operations in pkg/validator/token.go
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- [ ] T072 [US6] Implement Redis availability check (Ping) with fail-closed behavior in pkg/validator/token.go
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- [ ] T073 [US6] Implement custom keyauth middleware wrapper in internal/middleware/auth.go
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- [ ] T074 [US6] Configure keyauth with header lookup "token" in internal/middleware/auth.go
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- [ ] T075 [US6] Add validator callback to keyauth config in internal/middleware/auth.go
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- [ ] T076 [US6] Store user_id in Fiber Locals after successful validation in internal/middleware/auth.go
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- [ ] T077 [US6] Implement custom ErrorHandler mapping errors to response codes in internal/middleware/auth.go
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- [ ] T078 [US6] Add auth failure logging with request ID in internal/middleware/auth.go
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- [ ] T079 [US6] Register keyauth middleware after logger in cmd/api/main.go
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- [ ] T080 [US6] Create protected example endpoint (/api/v1/users) in internal/handler/user.go
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- [ ] T081 [US6] Register protected routes with middleware in cmd/api/main.go
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**Checkpoint**: Protected endpoints require valid token, reject invalid/missing tokens with correct error codes
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---
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## Phase 9: User Story 7 - Rate Limiting Configuration (Priority: P3)
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**Goal**: Provide IP-based rate limiting capability (disabled by default, easy to enable)
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**Independent Test**: Enable limiter, exceed limit, verify 429 responses; disable and verify no limiting
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### Integration Tests for User Story 7
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- [ ] T082 [P] [US7] Integration test for rate limiter with limit exceeded (429, code 1003) in tests/integration/ratelimit_test.go
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- [ ] T083 [P] [US7] Integration test for rate limit reset after window expiration in tests/integration/ratelimit_test.go
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- [ ] T084 [P] [US7] Test per-IP rate limiting (different IPs have separate limits) in tests/integration/ratelimit_test.go
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### Implementation for User Story 7
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- [ ] T085 [US7] Implement rate limiter middleware wrapper (COMMENTED by default) in internal/middleware/ratelimit.go
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- [ ] T086 [US7] Configure limiter with IP-based key generator (c.IP()) in internal/middleware/ratelimit.go
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- [ ] T087 [US7] Configure limiter with config values (Max, Expiration) in internal/middleware/ratelimit.go
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- [ ] T088 [US7] Add custom LimitReached handler returning unified error response in internal/middleware/ratelimit.go
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- [ ] T089 [US7] Add commented middleware registration example in cmd/api/main.go
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- [ ] T090 [US7] Document rate limiter usage in quickstart.md (how to enable, configure)
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- [ ] T091 [US7] Add rate limiter configuration examples to config files
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**Checkpoint**: Rate limiter can be enabled via config, blocks excess requests per IP, returns 429 with code 1003
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---
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## Phase 10: Polish & Quality Gates
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**Purpose**: Final quality checks and cross-cutting improvements
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### Documentation & Examples
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- [ ] T092 [P] Update quickstart.md with actual file paths and final configuration
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- [ ] T093 [P] Create example requests (curl commands) in quickstart.md for all scenarios
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- [ ] T094 [P] Document middleware execution order in docs/ or README
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- [ ] T095 [P] Add troubleshooting section to quickstart.md
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### Code Quality
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- [ ] T096 [P] Add Go doc comments to all exported functions and types
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- [ ] T097 [P] Run gofmt on all Go files
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- [ ] T098 [P] Run go vet and fix all issues
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- [ ] T099 [P] Run golangci-lint and fix critical issues
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- [ ] T100 Review all Redis key usage, ensure no hardcoded strings (use constants.RedisAuthTokenKey())
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- [ ] T101 Review all error handling, ensure explicit returns (no panic abuse)
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- [ ] T102 Review naming conventions (UserID not userId, HTTPServer not HttpServer)
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- [ ] T103 Check for Java-style anti-patterns (no I-prefix, no Impl-suffix, no getters/setters)
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### Testing & Coverage
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- [ ] T104 Run all unit tests: go test ./pkg/...
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- [ ] T105 Run all integration tests: go test ./tests/integration/...
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- [ ] T106 Measure test coverage: go test -cover ./...
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- [ ] T107 Verify core business logic coverage >= 90% (config, logger, validator)
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- [ ] T108 Verify overall coverage >= 70%
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### Security Audit
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- [ ] T109 Review authentication fail-closed behavior (Redis unavailable = 503)
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- [ ] T110 Review context timeouts on Redis operations
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- [ ] T111 Check for command injection vulnerabilities
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- [ ] T112 Verify no sensitive data in logs (tokens, passwords)
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- [ ] T113 Review error messages (no sensitive information leakage)
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### Performance Validation
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- [ ] T114 Test middleware overhead < 5ms per request (load testing)
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- [ ] T115 Verify log rotation doesn't block requests
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- [ ] T116 Test config hot reload doesn't affect in-flight requests
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- [ ] T117 Verify Redis connection pool handles load correctly
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### Final Quality Gates
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- [ ] T118 Quality Gate: All tests pass (go test ./...)
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- [ ] T119 Quality Gate: No formatting issues (gofmt -l . returns empty)
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- [ ] T120 Quality Gate: No vet issues (go vet ./...)
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- [ ] T121 Quality Gate: Test coverage meets requirements (70%+ overall, 90%+ core)
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- [ ] T122 Quality Gate: All TODOs/FIXMEs addressed or documented
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- [ ] T123 Quality Gate: quickstart.md works end-to-end (manual validation)
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- [ ] T124 Quality Gate: All middleware integrated and working together
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- [ ] T125 Quality Gate: Graceful shutdown works correctly (no goroutine leaks)
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- [ ] T126 Quality Gate: Constitution compliance verified (no violations)
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---
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## Dependencies & Execution Order
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### Phase Dependencies
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1. **Setup (Phase 1)**: No dependencies - start immediately
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2. **Foundational (Phase 2)**: Depends on Setup (Phase 1) - BLOCKS all user stories
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3. **User Stories (Phases 3-9)**: All depend on Foundational (Phase 2) completion
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- US1, US2, US3 can proceed in parallel (independent)
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- US4 depends on US2 (needs logger)
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- US5 can proceed in parallel with others
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- US6 depends on US3 (needs response format)
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- US7 depends on US3 (needs response format)
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4. **Polish (Phase 10)**: Depends on all desired user stories being complete
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### User Story Dependencies
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```
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Foundational (Phase 2) - MUST COMPLETE FIRST
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├─→ US1: Config Hot Reload (independent)
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├─→ US2: Logging (independent)
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├─→ US3: Response Format (independent)
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│
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├─→ US4: Request Tracing (depends on US2: logger)
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├─→ US5: Error Recovery (independent)
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│
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├─→ US6: Authentication (depends on US3: response format)
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└─→ US7: Rate Limiting (depends on US3: response format)
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```
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### Within Each User Story
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- Tests MUST be written FIRST and FAIL before implementation
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- Models/structures before services
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- Services before middleware
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- Middleware before registration in main.go
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- Core implementation before integration
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### Parallel Opportunities
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**Phase 1 (Setup)**: All tasks T002-T007 marked [P] can run in parallel
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**Phase 2 (Foundational)**:
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- T012 (dev/staging/prod configs) can run in parallel with others
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- T013-T016 (logging) can run in parallel as group
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- These are independent file operations
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**Phase 3-9 (User Stories)**:
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- After Foundational completes, these can start in parallel:
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- US1: T018-T025 (config hot reload)
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- US2: T026-T033 (logging)
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- US3: T034-T042 (response format)
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- US5: T052-T060 (error recovery)
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- After US2 completes:
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- US4: T043-T051 (request tracing)
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- After US3 completes:
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- US6: T061-T081 (authentication)
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- US7: T082-T091 (rate limiting)
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**Phase 10 (Polish)**: Many tasks marked [P] can run in parallel (documentation, linting, etc.)
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---
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## Parallel Execution Examples
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### Example 1: Setup Phase (All Parallel)
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```bash
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# Launch all setup tasks together (different files):
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Task T002: "Setup unified error codes in pkg/errors/codes.go"
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Task T003: "Setup custom error types in pkg/errors/errors.go"
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Task T004: "Setup unified response structure in pkg/response/response.go"
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Task T005: "Setup response code constants in pkg/response/codes.go"
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Task T006: "Setup business constants in pkg/constants/constants.go"
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Task T007: "Setup Redis key generation functions in pkg/constants/redis.go"
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```
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### Example 2: User Story Tests (Parallel within Story)
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```bash
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# US6 unit tests - all can run in parallel:
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Task T061: "Unit test for TokenValidator with valid token"
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Task T062: "Unit test for expired/invalid token"
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Task T063: "Unit test for Redis unavailable"
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Task T064: "Unit test for context timeout"
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# US6 integration tests - all can run in parallel:
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Task T065: "Integration test with valid token"
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Task T066: "Integration test for missing token"
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Task T067: "Integration test for invalid token"
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Task T068: "Integration test for Redis down"
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```
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### Example 3: Independent User Stories (After Foundation)
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```bash
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# After Phase 2 completes, these can all start in parallel:
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Agent 1: Work on US1 (Config Hot Reload) - T018 through T025
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Agent 2: Work on US2 (Logging) - T026 through T033
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Agent 3: Work on US3 (Response Format) - T034 through T042
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Agent 4: Work on US5 (Error Recovery) - T052 through T060
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```
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---
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## Implementation Strategy
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### MVP First (Minimum Viable Product)
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**Recommendation**: Complete Phases 1-5 (Setup + Foundation + US1 + US2 + US3) for MVP
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This delivers:
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- Configuration hot reload (US1)
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- Production logging (US2)
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- API response consistency (US3)
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Then deploy and validate before adding authentication and other features.
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|
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### Incremental Delivery Roadmap
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1. **Foundation** (Phases 1-2): ~2-3 days
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- Setup + Foundational infrastructure
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- **Deliverable**: Basic Fiber app with config, logging, response structure
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|
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2. **MVP** (Phases 3-5): ~2-3 days
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|
- US1: Config hot reload
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- US2: Logging with rotation
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|
- US3: Unified responses
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|
- **Deliverable**: Production-ready foundation with observability
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|
|
|
3. **Observability+** (Phases 6-7): ~2-3 days
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|
- US4: Request tracing
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- US5: Error recovery
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- **Deliverable**: Complete observability and fault tolerance
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|
|
|
4. **Security** (Phase 8): ~2-3 days
|
|
- US6: Authentication
|
|
- **Deliverable**: Secured API with Redis token validation
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|
|
|
5. **Production Hardening** (Phases 9-10): ~2-3 days
|
|
- US7: Rate limiting (optional)
|
|
- Polish and quality gates
|
|
- **Deliverable**: Production-ready system
|
|
|
|
**Total Estimated Time**: 10-15 days (single developer)
|
|
|
|
### Parallel Team Strategy
|
|
|
|
With 3 developers after Foundation completes:
|
|
|
|
- **Dev A**: US1 + US2 (Config + Logging) - Core infrastructure
|
|
- **Dev B**: US3 + US4 (Response + Tracing) - API foundation
|
|
- **Dev C**: US5 + US6 (Recovery + Auth) - Reliability + Security
|
|
|
|
Then converge for US7 and Polish.
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|
|
|
**Estimated Time with Parallel Work**: 7-10 days
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|
|
|
---
|
|
|
|
## Task Summary
|
|
|
|
- **Total Tasks**: 126
|
|
- **Setup Phase**: 7 tasks
|
|
- **Foundational Phase**: 10 tasks (BLOCKING)
|
|
- **User Story 1** (Config): 8 tasks (3 tests + 5 implementation)
|
|
- **User Story 2** (Logging): 8 tasks (3 tests + 5 implementation)
|
|
- **User Story 3** (Response): 9 tasks (3 tests + 6 implementation)
|
|
- **User Story 4** (Tracing): 9 tasks (3 tests + 6 implementation)
|
|
- **User Story 5** (Recovery): 9 tasks (3 tests + 6 implementation)
|
|
- **User Story 6** (Auth): 21 tasks (8 tests + 13 implementation)
|
|
- **User Story 7** (Rate Limit): 10 tasks (3 tests + 7 implementation)
|
|
- **Polish Phase**: 35 tasks (documentation, quality, security)
|
|
|
|
**Parallelizable Tasks**: 45 tasks marked [P]
|
|
|
|
**Test Coverage**:
|
|
- Unit tests: 23 tasks
|
|
- Integration tests: 18 tasks
|
|
- Total test tasks: 41 (32% of all tasks)
|
|
|
|
**Constitution Compliance**:
|
|
- ✅ All tasks follow Handler → Service → Store → Model pattern
|
|
- ✅ All Redis keys use generation functions (no hardcoded strings)
|
|
- ✅ All responses use unified format
|
|
- ✅ All error codes centralized
|
|
- ✅ Go idiomatic patterns (no Java-style anti-patterns)
|
|
- ✅ Explicit error handling throughout
|
|
- ✅ Context usage for timeouts and cancellation
|
|
|
|
---
|
|
|
|
## Next Steps
|
|
|
|
1. ✅ Tasks.md generated and validated
|
|
2. ⏳ Review task list with team
|
|
3. ⏳ Set up development environment (Go 1.25.1, Redis 7.x)
|
|
4. ⏳ Run `/speckit.implement` to begin implementation
|
|
5. ⏳ Start with Phase 1 (Setup) - all tasks can run in parallel
|
|
|
|
**Ready for Implementation**: Yes - all tasks are specific, have file paths, and follow constitution principles.
|