# Complete Implementation Tasks

This section provides a comprehensive, phase-by-phase breakdown of all implementation tasks following Test-Driven Development (TDD) principles. Tasks are organized by feature with detailed checkpoints and acceptance criteria.

## Feature 001: Base MCP Architecture - Implementation Tasks (73 Tasks, 7 Phases)

**TDD Workflow**: All tests written → tests reviewed/approved → tests fail (red) → implementation → tests pass (green) → refactor → checkpoint review

**Phase 0: Setup and Foundation (Tasks 001-011)**

**TASK-001**: Initialize project structure with pyproject.toml (Python 3.12+, dependencies: structlog, pydantic, sentence-transformers, chromadb, aio-pika, pytest)
**TASK-002**: Set up pytest configuration with async support, coverage reporting, fixtures
**TASK-003**: Create basic directory structure (src/, tests/unit/, tests/integration/, tests/contract/, config/)
**TASK-004**: Set up structured logging configuration (JSON format, levels, console output)
**TASK-005**: Implement configuration management (environment variables, TOML file, validation)
**TASK-006**: Set up OpenTelemetry base configuration (OTLP exporter, trace provider)
**TASK-007**: Create base error classes (ValidationError, ConnectionError, OperationError, MCP protocol errors)
**TASK-008**: Write unit tests for configuration loading and validation
**TASK-009**: Write unit tests for error class instantiation and serialization
**TASK-010**: Set up pre-commit hooks (black, isort, mypy, pylint)
**TASK-011**: Create CI/CD configuration (GitHub Actions: test, lint, coverage gates)

**Checkpoint 001**: Project structure initialized, all tests pass, configuration loads correctly, CI/CD green

**Phase 1: Foundational Infrastructure (Tasks 012-028)**

**TASK-012**: Write unit tests for OpenAPI spec loading and parsing
**TASK-013**: Implement OpenAPI spec loader (read YAML, validate structure, extract operations)
**TASK-014**: Write unit tests for operation extraction (paths, methods, parameters, responses)
**TASK-015**: Implement operation extractor with namespace categorization (using OpenAPI tags)
**TASK-016**: Write unit tests for Pydantic schema generation from OpenAPI schemas
**TASK-017**: Implement OpenAPI-to-Pydantic converter (handle types, required fields, defaults, validation)
**TASK-018**: Write unit tests for SQLite database initialization and schema creation
**TASK-019**: Implement SQLite database manager with tables: operations, namespaces, schemas
**TASK-020**: Write unit tests for operation storage and retrieval
**TASK-021**: Implement operation persistence (insert, update, query by ID, query by namespace)
**TASK-022**: Write unit tests for sentence-transformer model loading
**TASK-023**: Implement embedding generator (load all-MiniLM-L6-v2, generate 384-dim vectors)
**TASK-024**: Write unit tests for embedding generation from operation descriptions
**TASK-025**: Implement batch embedding generation for all operations
**TASK-026**: Write unit tests for ChromaDB/sqlite-vec initialization
**TASK-027**: Implement vector database manager (initialize, insert, query with similarity threshold)
**TASK-028**: Implement build-time script (generate schemas, compute embeddings, populate databases)

**Checkpoint 002**: OpenAPI processing complete, schemas generated, embeddings computed, databases populated

**Phase 2: US1-1 Search Operations (Tasks 029-037)**

**TASK-029**: Write unit tests for search-ids tool input validation (query string required, non-empty)
**TASK-030**: Write integration tests for search-ids with real vector database (queries: "list queues", "create exchange", "nonexistent operation")
**TASK-031**: Implement search-ids MCP tool (validate input, generate query embedding, vector search with threshold ≥0.7)
**TASK-032**: Write unit tests for similarity score ranking (descending order)
**TASK-033**: Implement result ranking and filtering (<0.7 threshold rejection)
**TASK-034**: Write integration tests for zero-results scenario (all scores <0.7)
**TASK-035**: Implement zero-results handling (empty list + suggestion message)
**TASK-036**: Write performance tests for search latency (<100ms, p95)
**TASK-037**: Optimize search performance (cache embeddings, batch queries)

**Checkpoint 003**: search-ids tool complete, all tests pass, latency <100ms (p95), zero-results handled

**Phase 3: US1-2 Get Operation Details (Tasks 038-044)**

**TASK-038**: Write unit tests for get-id tool input validation (operation_id required, non-empty)
**TASK-039**: Write integration tests for get-id with real database (valid ID, invalid ID)
**TASK-040**: Implement get-id MCP tool (validate input, query database by ID, return complete schema)
**TASK-041**: Write unit tests for operation not found error (invalid ID)
**TASK-042**: Implement error handling for missing operations (return MCP error with clear message)
**TASK-043**: Write performance tests for get-id latency (<50ms)
**TASK-044**: Optimize database queries (add index on operation_id)

**Checkpoint 004**: get-id tool complete, all tests pass, latency <50ms, errors clear

**Phase 4: US1-3 Execute Operations (Tasks 045-059)**

**TASK-045**: Write unit tests for call-id tool input validation (operation_id, parameters required)
**TASK-046**: Write unit tests for parameter validation against Pydantic schema (missing fields, type mismatches, extra fields)
**TASK-047**: Implement parameter validator (load schema, validate with Pydantic, return descriptive errors)
**TASK-048**: Write integration tests for parameter validation errors (list specific missing/invalid fields)
**TASK-049**: Implement validation error formatting (JSON-RPC 2.0 format, field-level details)
**TASK-050**: Write unit tests for RabbitMQ HTTP client (construct request from operation + parameters)
**TASK-051**: Implement HTTP client for Management API (authentication, request construction, response parsing)
**TASK-052**: Write integration tests for successful operation execution (create queue, list queues)
**TASK-053**: Implement call-id MCP tool (validate, execute HTTP request, return result)
**TASK-054**: Write integration tests for RabbitMQ unavailability (connection refused, timeout)
**TASK-055**: Implement connection failure handling (fail-fast, no retry, clear error message)
**TASK-056**: Write integration tests for malformed RabbitMQ responses (invalid JSON, missing fields)
**TASK-057**: Implement response parsing error handling (descriptive errors without exposing internals)
**TASK-058**: Write performance tests for operation execution (<200ms under normal conditions)
**TASK-059**: Implement operation timeout (30s, abort with descriptive error)

**Checkpoint 005**: call-id tool complete, validation working, execution successful, errors handled, <200ms latency

**Phase 5: US1-4 Error Handling & AMQP Operations (Tasks 060-068)**

**TASK-060**: Write unit tests for all MCP error codes (invalid params, method not found, internal error)
**TASK-061**: Implement standardized MCP error responses (JSON-RPC 2.0 format)
**TASK-062**: Write contract tests validating MCP protocol compliance (request/response format, error codes)
**TASK-063**: Define AMQP operation schemas manually (amqp.publish, amqp.consume, amqp.ack, amqp.nack, amqp.reject)
**TASK-064**: Write unit tests for AMQP operation parameter validation
**TASK-065**: Implement AMQP operation execution (pika/aio-pika integration)
**TASK-066**: Write integration tests for AMQP operations (publish, consume, ack with real RabbitMQ)
**TASK-067**: Implement AMQP error handling (connection failures, channel errors, delivery failures)
**TASK-068**: Write performance tests for AMQP operations (publish <50ms, consume <50ms)

**Checkpoint 006**: All error handling complete, AMQP operations working, MCP protocol validated

**Phase 6: Rate Limiting, Multi-Version, Observability (Tasks 069-073)**

**TASK-069**: Write unit tests for rate limiter (100 req/min per client, 429 response, Retry-After header)
**TASK-070**: Implement rate limiter middleware (client identification by MCP connection ID, fallback to IP, Redis-based counter)
**TASK-071**: Implement multi-version support (RABBITMQ_API_VERSION env var, pre-generated schemas per version, version validation)
**TASK-072**: Implement OpenTelemetry instrumentation (trace spans for all operations, metrics: request counters, latency histograms, cache hit/miss)
**TASK-073**: Write observability tests (verify spans generated, metrics collected, correlation IDs propagated)

**Checkpoint 007**: Rate limiting working, multi-version support complete, observability traces 100% of operations

---

## Feature 002: Basic RabbitMQ Connection - Implementation Tasks (12 Tasks, 3 Phases)

**Phase 1: Connection Establishment (Tasks 001-004)**

**TASK-001**: Write unit tests for connection configuration (host, port, user, password, vhost, timeout, heartbeat validation)
**TASK-002**: Implement configuration loading (precedence: args > env > TOML > defaults)
**TASK-003**: Write integration tests for successful connection (valid credentials, <5s)
**TASK-004**: Implement AMQP connection establishment (pika, timeout 30s, heartbeat 60s)

**Phase 2: Health Monitoring & Reconnection (Tasks 005-009)**

**TASK-005**: Write integration tests for connection failures (invalid credentials, unreachable host, timeout)
**TASK-006**: Implement connection error handling (descriptive errors, credential sanitization in logs)
**TASK-007**: Write unit tests for health check (return connection state, <1s)
**TASK-008**: Implement health monitoring (real-time state tracking, hybrid heartbeat + callbacks)
**TASK-009**: Write integration tests for auto-reconnection (exponential backoff: 1s→2s→4s→8s→16s→32s→60s, infinite retries)

**Phase 3: Connection Pooling (Tasks 010-012)**

**TASK-010**: Implement auto-reconnection logic (detect loss, backoff, retry, success logging)
**TASK-011**: Write unit tests for connection pool (default 5 connections, blocking when full, 10s timeout)
**TASK-012**: Implement connection pool manager (acquire, release, health monitoring per connection)

**Checkpoint**: Connection management complete, health checks <1s, auto-reconnection working, pool tested

---

## Feature 003: Essential Topology Operations - Implementation Tasks (22 Tasks, 4 Phases)

**Phase 1: Queue Operations (Tasks 001-007)**

**TASK-001**: Write unit tests for list queues parameters (vhost filtering)
**TASK-002**: Implement list queues (Management API call, response parsing)
**TASK-003**: Write unit tests for queue creation parameters (name, durable, exclusive, auto-delete validation)
**TASK-004**: Implement queue creation (API call, duplicate prevention, success confirmation)
**TASK-005**: Write integration tests for queue deletion safety (messages=0 AND consumers=0 validation)
**TASK-006**: Implement queue deletion (safety validation, --force flag support, error messages)
**TASK-007**: Write integration tests for queue statistics (messages_ready, messages_unacknowledged, consumers, memory)

**Phase 2: Exchange Operations (Tasks 008-013)**

**TASK-008**: Write unit tests for list exchanges parameters (vhost filtering)
**TASK-009**: Implement list exchanges (API call, type display)
**TASK-010**: Write unit tests for exchange creation parameters (name, type: direct/topic/fanout/headers validation)
**TASK-011**: Implement exchange creation (API call, duplicate prevention, type validation)
**TASK-012**: Write integration tests for exchange deletion safety (bindings check, system exchange protection)
**TASK-013**: Implement exchange deletion (binding validation, amq.* and "" protection, error messages)

**Phase 3: Binding Operations (Tasks 014-018)**

**TASK-014**: Write unit tests for list bindings parameters (vhost filtering)
**TASK-015**: Implement list bindings (API call, source/destination/routing key display)
**TASK-016**: Write unit tests for binding creation parameters (exchange, queue, routing key, existence validation)
**TASK-017**: Implement binding creation (validate exchange first → queue, topic wildcard support, duplicate prevention)
**TASK-018**: Implement binding deletion (specific exchange-to-queue removal)

**Phase 4: CLI Interface (Tasks 019-022)**

**TASK-019**: Write unit tests for CLI argument parsing (connection credentials, resource names, options, --format flag)
**TASK-020**: Implement CLI commands (Click framework: connect, list, create, delete subcommands)
**TASK-021**: Implement CLI output formatting (Rich tables for human, JSON for --format=json, exit codes)
**TASK-022**: Write performance tests for listings (1000 queues, <2s, p95)

**Checkpoint**: All topology operations complete, safety validations working, CLI functional

---

## Feature 004: Message Publishing and Consumption - Implementation Tasks (18 Tasks, 3 Phases)

**Phase 1: Message Publishing (Tasks 001-006)**

**TASK-001**: Write unit tests for publish parameters (content, exchange, routing key, properties validation)
**TASK-002**: Implement message publishing (aio-pika, exchange existence validation, property support)
**TASK-003**: Write integration tests for successful publishing (<100ms, persistence support)
**TASK-004**: Implement payload handling (JSON, text, binary, content-type detection)
**TASK-005**: Write integration tests for custom headers and correlation IDs
**TASK-006**: Implement exchange validation before publishing (fail fast on missing exchange)

**Phase 2: Message Consumption (Tasks 007-013)**

**TASK-007**: Write unit tests for consumption parameters (queue, prefetch, auto-ack validation)
**TASK-008**: Implement queue subscription (aio-pika consumer, real-time delivery, <50ms latency)
**TASK-009**: Write integration tests for message metadata (headers, delivery tag, routing key preservation)
**TASK-010**: Implement prefetch limit configuration (default 10, configurable)
**TASK-011**: Write integration tests for concurrent consumers (100+ consumers, throughput 1000+ msg/min)
**TASK-012**: Implement queue existence validation before consumption
**TASK-013**: Write performance tests for consumption latency (<50ms per message, p95)

**Phase 3: Acknowledgment & Error Handling (Tasks 014-018)**

**TASK-014**: Write unit tests for acknowledgment (ack, nack, reject with delivery tag validation)
**TASK-015**: Implement acknowledgment operations (ack, nack with requeue, reject)
**TASK-016**: Write integration tests for message lifecycle (publish → consume → ack, message removed from queue)
**TASK-017**: Implement duplicate acknowledgment prevention (track delivery tags, ignore duplicates)
**TASK-018**: Write integration tests for connection failure recovery during operations

**Checkpoint**: Publishing <100ms, consumption <50ms, acknowledgment working, 1000+ msg/min throughput, 100+ concurrent consumers

---

## Feature 005: Basic Console Client - Implementation Tasks (14 Tasks, 3 Phases)

**Phase 1: Connection & Health (Tasks 001-004)**

**TASK-001**: Write unit tests for connection command parsing (host, port, credentials, TLS options)
**TASK-002**: Implement connection command (Click CLI, credential handling, success/failure display)
**TASK-003**: Write integration tests for health check command (<100ms response)
**TASK-004**: Implement health check and status display (connection state, metrics)

**Phase 2: Resource Management Commands (Tasks 005-010)**

**TASK-005**: Write unit tests for list commands (queues, exchanges, bindings)
**TASK-006**: Implement list commands (Rich table formatting, column ordering: Identity → Config → Metrics)
**TASK-007**: Write unit tests for create commands (queue, exchange, binding with validation)
**TASK-008**: Implement create commands (parameter validation, success confirmation)
**TASK-009**: Write unit tests for delete commands (safety validation, --force support)
**TASK-010**: Implement delete commands (safety checks, user confirmation prompts)

**Phase 3: Messaging & UX (Tasks 011-014)**

**TASK-011**: Write unit tests for publish command (exchange, routing key, message body, properties)
**TASK-012**: Implement publish command (payload handling, delivery confirmation)
**TASK-013**: Write unit tests for subscribe command (queue, prefetch, acknowledgment mode)
**TASK-014**: Implement subscribe command (real-time message display, acknowledgment control, Rich formatting)

**Checkpoint**: All CLI commands functional, Rich formatting working, connection/operations/messaging complete, <2s response times

---

## Feature 006: Basic Testing Framework - Implementation Tasks (17 Tasks, 3 Phases)

**Phase 1: Test Infrastructure (Tasks 001-006)**

**TASK-001**: Set up pytest configuration (asyncio support, coverage reporting, fixtures, parallel execution)
**TASK-002**: Create isolated test environment automation (Docker Compose for RabbitMQ, setup/teardown scripts)
**TASK-003**: Write test fixtures for connection management (reusable connection fixtures, cleanup automation)
**TASK-004**: Write test fixtures for test data generation (queues, exchanges, messages with consistent naming)
**TASK-005**: Implement test data cleanup automation (teardown hooks, queue/exchange/binding removal)
**TASK-006**: Write parallel test isolation validators (ensure no interference, deterministic results)

**Phase 2: Coverage & Contract Tests (Tasks 007-012)**

**TASK-007**: Write unit tests for all critical components (connection management, message operations, queue operations, >80% coverage)
**TASK-008**: Write integration tests using real RabbitMQ (connection, topology, messaging, acknowledgment)
**TASK-009**: Implement coverage tracking and reporting (pytest-cov, branch coverage, component breakdowns)
**TASK-010**: Write contract tests for MCP protocol compliance (JSON-RPC 2.0 format, error codes, tool schemas)
**TASK-011**: Implement Pydantic model validation tests (OpenAPI schema conformance, 100% coverage)
**TASK-012**: Write authentication and authorization tests (valid/invalid credentials, permission errors, 100% coverage)

**Phase 3: Performance & CI/CD (Tasks 013-017)**

**TASK-013**: Write performance tests for critical operations (search <100ms, get-id <50ms, call-id <200ms, publish/consume <50ms)
**TASK-014**: Implement memory usage monitoring tests (connection pool under load, leak detection)
**TASK-015**: Write throughput tests (1000 messages/minute, 100 concurrent consumers)
**TASK-016**: Implement CI/CD pipeline (GitHub Actions: test execution, coverage gates 80%+, merge blocking on failure)
**TASK-017**: Optimize test suite execution (<5 minutes total runtime, parallel execution)

**Checkpoint**: 80%+ coverage achieved, 100% auth/error/MCP tests, <5min test suite, CI/CD enforcing quality gates

---

## Feature 007: Basic Structured Logging - Implementation Tasks (53 Tasks, 9 Phases)

**Phase 0: Core Logging Setup (Tasks 001-008)**

**TASK-001**: Write unit tests for structlog configuration (JSON format, log levels, processors)
**TASK-002**: Implement structlog setup (JSON renderer, timestamp processor, level filter)
**TASK-003**: Write unit tests for log entry schema (mandatory fields: timestamp, level, message, correlation_id, schema_version)
**TASK-004**: Implement log entry model (Pydantic model with validation)
**TASK-005**: Write unit tests for ISO 8601 UTC timestamp formatting (Z suffix, microsecond precision)
**TASK-006**: Implement timestamp processor (UTC normalization, ISO format)
**TASK-007**: Write unit tests for correlation ID generation (UUID4, fallback to timestamp + random)
**TASK-008**: Implement correlation ID generator with propagation (AsyncIO context vars)

**Checkpoint 001**: Core logging infrastructure complete, JSON output working, correlation IDs propagating

**Phase 1: Sensitive Data Redaction (Tasks 009-016)**

**TASK-009**: Write unit tests for credential pattern detection (passwords, tokens, API keys in various formats)
**TASK-010**: Implement regex patterns for sensitive data (password=, token:, Authorization:, etc.)
**TASK-011**: Write integration tests for automatic redaction (connection strings, log entries, stack traces)
**TASK-012**: Implement redaction processor (replace sensitive values with "[REDACTED]")
**TASK-013**: Write unit tests for message truncation (>100KB messages, "...[truncated]" suffix)
**TASK-014**: Implement message truncation processor (100KB limit, UTF-8 safe)
**TASK-015**: Write integration tests for multi-line message handling (stack traces as single JSON strings with \n)
**TASK-016**: Implement multi-line message processor (escape newlines, single JSON string)

**Checkpoint 002**: Sensitive data redaction working, 100% credential sanitization, messages truncated properly

**Phase 2: File Logging & Rotation (Tasks 017-025)**

**TASK-017**: Write unit tests for log file path generation (./logs/rabbitmq-mcp-{date}.log pattern)
**TASK-018**: Implement file handler setup (create ./logs/ directory, secure permissions 600/700)
**TASK-019**: Write integration tests for daily log rotation (midnight UTC trigger, new file creation)
**TASK-020**: Implement TimedRotatingFileHandler configuration (daily rotation, UTC-based)
**TASK-021**: Write integration tests for size-based rotation (100MB trigger, new file creation)
**TASK-022**: Implement size-based rotation (100MB limit, backup file naming)
**TASK-023**: Write unit tests for rotated file compression (gzip format)
**TASK-024**: Implement compression handler (gzip rotated files, delete originals)
**TASK-025**: Write integration tests for fallback to stderr on file logging failure

**Checkpoint 003**: File logging working, dual rotation (daily + 100MB) complete, compression functional, fallback tested

**Phase 3: Performance & Async Logging (Tasks 026-032)**

**TASK-026**: Write performance tests for logging overhead (<5ms per operation)
**TASK-027**: Implement async logging buffer (QueueHandler + QueueListener, buffer size 10000)
**TASK-028**: Write integration tests for buffer saturation (blocking writes, zero log loss)
**TASK-029**: Implement buffer saturation handling (block writes when full, never drop logs)
**TASK-030**: Write throughput tests (1000 logs/second on reference hardware)
**TASK-031**: Optimize logging performance (batch writes, buffer tuning)
**TASK-032**: Write integration tests for concurrent logging (multiple threads/coroutines, no race conditions)

**Checkpoint 004**: Async logging working, <5ms overhead, 1000 logs/sec throughput, zero log loss

**Phase 4: Retention & Cleanup (Tasks 033-037)**

**TASK-033**: Write unit tests for retention policy configuration (minimum 30 days, configurable)
**TASK-034**: Implement retention policy (identify files older than retention period)
**TASK-035**: Write integration tests for file deletion (old files removed, recent files preserved)
**TASK-036**: Implement cleanup scheduler (daily runs at midnight UTC, atomic operations)
**TASK-037**: Write integration tests for cleanup failure handling (continue on partial failures, log errors)

**Checkpoint 005**: Retention policy working, 30-day minimum enforced, cleanup scheduler functional

**Phase 5: Security & Access Control (Tasks 038-041)**

**TASK-038**: Write unit tests for secure file permissions (600 for files, 700 for directories on Unix)
**TASK-039**: Implement permission setter (os.chmod, platform-specific, fallback on Windows)
**TASK-040**: Write integration tests for permission failures (log warning to stderr, continue with defaults)
**TASK-041**: Implement concurrent file access (write-through approach, no file locking)

**Checkpoint 006**: Secure permissions working, Windows compatibility maintained, concurrent access safe

**Phase 6: Dynamic Configuration (Tasks 042-046)**

**TASK-042**: Write unit tests for runtime config reload (log level changes, output settings)
**TASK-043**: Implement signal handlers (SIGHUP/SIGUSR1 on Unix, config file polling on Windows)
**TASK-044**: Write integration tests for config reload without restart (level change propagation <1s)
**TASK-045**: Implement schema versioning (field in every log entry, semantic versioning starting "1.0.0")
**TASK-046**: Write unit tests for schema version backward compatibility (parsers handle old versions)

**Checkpoint 007**: Runtime config reload working, schema versioning implemented, backward compatibility tested

**Phase 7: Graceful Shutdown (Tasks 047-050)**

**TASK-047**: Write unit tests for shutdown signal handling (SIGTERM, SIGINT, normal exit)
**TASK-048**: Implement graceful shutdown (flush async buffers, max 30s timeout, zero log loss)
**TASK-049**: Write integration tests for buffer flush on shutdown (all pending logs written)
**TASK-050**: Implement shutdown timeout handling (force quit after 30s, log warning)

**Checkpoint 008**: Graceful shutdown working, zero log loss on SIGTERM/SIGINT, 30s timeout enforced

**Phase 8: RabbitMQ Destination (Optional - P2) (Tasks 051-053)**

**TASK-051**: Write unit tests for RabbitMQ handler configuration (exchange, routing key pattern {level}.{category})
**TASK-052**: Implement RabbitMQ log handler (aio-pika, persistent messages, delivery_mode=2, <500ms latency)
**TASK-053**: Write integration tests for RabbitMQ failure fallback (broker unavailable → console, auto-reconnect with exponential backoff)

**Checkpoint 009**: RabbitMQ destination working (optional), <500ms latency, fallback + reconnection functional

---
