telemetry-kit 0.3.0

# telemetry-kit Roadmap

**Last Updated:** 2025-11-23
**Status:** Active Development (v0.2.0-alpha.1)
**Next Release:** v0.2.0 (Q1 2025)

**Recent Milestones:**
- ✅ Week 8: Security Hardening Complete (Jan 2025)
- ✅ Node.js Bindings Proof-of-Concept (Jan 2025)
- ✅ `#[instrument]` Procedural Macro (Jan 2025)
- ✅ CLI Project Scaffolding (Jan 2025)
- ✅ Smart Instrumentation Recommendations (Nov 2025)
- 🚧 v0.3.0: Developer Experience (In Progress)

**Quick Stats:**
- 49 unit tests + 11 property tests + 10 integration tests = **70 tests passing**
- **Zero critical vulnerabilities** in SDK
- **SLSA Level 2** compliance
- **Node.js bindings** proof-of-concept complete

---

## Vision

telemetry-kit aims to be the **simplest, most privacy-respecting** way to add telemetry to Rust applications - especially CLI tools and libraries.

**Core Principles:**
- 🔒 **Privacy-first** - Anonymous by default, GDPR compliant
- 🎯 **Zero boilerplate** - 3 lines instead of 50+
- 📦 **Self-hostable** - Your data, your infrastructure
- 🚀 **CLI-optimized** - Works perfectly with short-lived processes

---

## Current Status (v0.2.0-alpha.1)

### ✅ Implemented Features

**SDK Core:**
- Event tracking (command and feature events)
- Privacy features (anonymization, sanitization, consent)
- SQLite offline storage
- Auto-sync background task
- DO_NOT_TRACK support
- HMAC-SHA256 authentication

**CLI Tool:**
- Project scaffolding (`telemetry-kit new`)
- Interactive setup (`telemetry-kit init`)
- Configuration validation
- Event statistics
- Manual sync
- Database cleanup
- Privacy consent management

**Infrastructure:**
- Reference server implementation (Rust + PostgreSQL + Redis)
- Docker deployment
- Rate limiting
- Batch ingestion
- Replay protection

### ✅ Recently Completed

**Week 8 - Security Hardening (January 2025):**
- [x] Security audit complete (zero critical vulnerabilities)
- [x] Supply chain security (SLSA Level 2, cargo-deny configured)
- [x] CI/CD security automation (cargo-audit + cargo-deny in CI)
- [x] Comprehensive security documentation
- [x] Documentation reorganization (project-docs/ structure)
- [x] Community-facing ROADMAP.md

**Node.js Bindings - Proof of Concept (January 2025):**
- [x] napi-rs native addon implementation
- [x] TypeScript definitions (full type safety)
- [x] npm package structure (@telemetry-kit/node)
- [x] Builder pattern API
- [x] Async/await support
- [x] Examples (basic + sync)
- [x] Comprehensive documentation

**CLI Project Scaffolding (January 2025):**
- [x] `telemetry-kit new` command for project creation
- [x] Binary/CLI application template with telemetry pre-configured
- [x] Library template with telemetry integration
- [x] Web service template (Axum) with telemetry
- [x] Optional sync configuration (`--with-sync` flag)
- [x] Automatic git initialization
- [x] README generation with privacy documentation
- [x] Project types: bin, lib, web

**Smart Instrumentation Recommendations (November 2025):**
- [x] `telemetry-kit analyze` command for code analysis
- [x] Pattern detection engine (main functions, async functions, HTTP handlers, DB operations)
- [x] Priority-based recommendations (High/Medium/Low)
- [x] Detailed mode with code snippets
- [x] JSON output format for tooling integration
- [x] Recursive directory scanning
- [x] Smart filtering (skips already-instrumented code)

### 🚧 In Progress

**Developer Experience (v0.3.0):**
- Quick start guide development

---

## Release Plan

### v0.2.0 - Privacy & Sync (Q1 2025)

**Target Date:** February 2025

**Focus:** Privacy-first telemetry with production-ready sync

**Features:**
- [x] Privacy controls (anonymization, sanitization)
- [x] Consent management
- [x] Auto-sync with configurable intervals
- [x] CLI tool for configuration
- [x] Security audit complete ✅
- [x] SLSA Level 2 compliance ✅
- [x] CI/CD with security checks ✅
- [x] Node.js bindings proof-of-concept ✅
- [ ] Comprehensive user documentation (in progress)
- [ ] SLSA Level 3 compliance (Q2 2025)

**Breaking Changes:** None (alpha → beta)

---

### v0.3.0 - Developer Experience (Q2 2025) 🚧

**Target Date:** April 2025

**Focus:** Making integration effortless

**Status:** In active development (started January 2025)

**Features:**
- [x] `#[instrument]` macro for automatic tracking ✅ (completed Jan 2025)
  - Procedural macro crate created
  - Supports async and sync functions
  - Compile-time code generation
  - Comprehensive tests with trybuild
- [x] CLI scaffolding (`telemetry-kit new my-project`) ✅ (completed Jan 2025)
  - Create new projects with telemetry pre-configured
  - Three project types: binary/CLI, library, web service
  - Optional sync configuration with .env.example
  - Auto-generated README with privacy documentation
  - Git initialization included
- [x] Smart instrumentation recommendations ✅ (completed Nov 2025)
  - Code analysis for instrumentation opportunities
  - Pattern detection (main, async functions, HTTP handlers, DB ops)
  - Priority-based recommendations with code snippets
  - JSON output for tooling integration
- [x] Interactive consent prompts ✅ (completed Nov 2025)
  - First-run consent dialog with detailed privacy information
  - Minimal (one-liner) consent prompt option
  - Builder API methods: `.prompt_for_consent()`, `.prompt_minimal()`
  - Automatic consent status detection
  - Privacy-first defaults (NO by default)
  - Integration with existing CLI consent commands
- [x] VS Code extension for inline suggestions ✅ (completed Nov 2025)
  - Smart project analysis with CLI integration
  - 17+ code snippets for common patterns
  - Inline diagnostics with quick fixes
  - Context-aware telemetry insertion
  - Configurable auto-analysis on save
  - Priority-based suggestions (High/Medium/Low)
  - Rich documentation and examples
- [x] Enhanced error messages ✅ (completed in Week 7)

**Documentation:**
- [x] Quick start guide (5-minute integration) ✅ (completed Nov 2025)
- [x] Best practices for different project types ✅ (completed Nov 2025)
- [x] Privacy compliance guide ✅ (completed Nov 2025)
- [x] Self-hosting production guide in docs/ ✅ (completed Nov 2025)

**Current Sprint:**
- ✅ **v0.3.0 Developer Experience COMPLETE**
- All DX features implemented and documented
- Ready for v0.3.0 release

---

### v0.4.0 - Node.js Ecosystem

**Target Date:** September 2025

**Focus:** Node.js/TypeScript support

**Features:**
- [ ] Publish `@telemetry-kit/node` to npm
- [ ] Cross-platform prebuilt binaries (Linux, macOS, Windows)
- [ ] Express.js middleware
- [ ] Next.js integration
- [ ] Fastify plugin
- [ ] Nest.js module
- [ ] AWS Lambda/Vercel Functions support

**Documentation:**
- [ ] Node.js quick start guide
- [ ] Framework integration guides
- [ ] Migration from existing solutions
- [ ] TypeScript best practices

**Performance:**
- [ ] <10ms event creation latency
- [ ] <5MB package size per platform
- [ ] Zero blocking of event loop

---

### v1.0.0 - Production Release

**Target Date:** November 2025

**Focus:** Stable, production-ready release

**Criteria:**
- [ ] 6+ months of beta testing
- [ ] 100+ active users
- [ ] Zero critical bugs
- [ ] Comprehensive documentation
- [ ] Security audit passed
- [ ] SLSA Level 3 compliance
- [ ] SemVer commitment

**Guarantees:**
- API stability (SemVer 2.0)
- Long-term support (LTS)
- Migration guides for all breaking changes
- Deprecation warnings (6+ months notice)

---

## Language Bindings

### Node.js / TypeScript (In Progress) 🚀

**Status:** Proof-of-concept complete (January 2025)

**Approach:** Native addon via [napi-rs](https://napi.rs/)

**Current Implementation:**
- [x] Rust bindings (napi-rs)
- [x] TypeScript definitions
- [x] npm package structure
- [x] Builder pattern API
- [x] Async/await support
- [x] Error handling
- [x] Examples (basic + sync)
- [x] Documentation

**Next Steps:**
- [ ] Local build testing
- [ ] CI/CD for cross-platform builds
- [ ] Publish to npm as `@telemetry-kit/node`
- [ ] Framework integrations (Express, Next.js, Fastify)

**Timeline:** v0.6.0 (Q3 2025)

**Benefits:**
- 100% code reuse from Rust SDK
- Native performance (~2-5MB addon)
- Same privacy guarantees
- TypeScript-first
- 19x larger audience (npm vs crates.io)

**See:** [NODE_STRATEGY.md](project-docs/NODE_STRATEGY.md) for full details

**Example API:**
```typescript
import { TelemetryKit } from '@telemetry-kit/node';

const telemetry = new TelemetryKit({
  serviceName: 'my-node-app',
  autoSync: true,
  syncConfig: { ... }
});

await telemetry.trackCommand('deploy', {
  success: true,
  durationMs: 1234
});
```

### Python (Planned)

**Target:** v0.7.0 (Q4 2025)

**Approach:** PyO3 (similar to napi-rs for Node.js)

**Benefits:**
- Data science community
- Machine learning workflows
- Similar implementation to Node.js

### Other Languages

- **Go:** Via CGO (v0.8.0+)
- **Ruby:** Via FFI (v0.9.0+)
- **C/C++:** Direct FFI (any time)

---

## Future Considerations (v1.1+)

### Advanced Features
- [ ] A/B testing framework
- [ ] Feature flags integration
- [ ] Real-time streaming analytics
- [ ] Multi-project dashboards
- [ ] Custom retention policies
- [ ] Data export automation

### Integrations
- [ ] Sentry integration (error tracking)
- [ ] Datadog integration
- [ ] New Relic integration
- [ ] Custom webhook support
- [ ] Slack/Discord notifications

### Platform Support
- [ ] WebAssembly support (browser + edge runtimes)
- [ ] Embedded systems (no_std)
- [ ] Mobile SDK (via FFI - iOS/Android)
- [x] **Node.js bindings** (Proof-of-concept complete! 🎉)
- [ ] Python bindings (napi-rs approach proven)
- [ ] Go bindings (via CGO)
- [ ] Ruby bindings

---

## Community Roadmap

We build in the open and welcome community input!

### How to Influence the Roadmap

1. **Vote on Features** - Star/thumbs up issues for features you want
2. **Submit Proposals** - Open a [Discussion](https://github.com/ibrahimcesar/telemetry-kit/discussions) with your idea
3. **Contribute Code** - See [CONTRIBUTING.md](CONTRIBUTING.md)
4. **Report Bugs** - Help us prioritize fixes

### Current Community Priorities

Based on GitHub discussions and issues:

1. **Node.js Support** (🆕 In Progress!)
   - Native bindings via napi-rs ✅
   - TypeScript-first API ✅
   - Framework integrations (Express, Next.js)
   - npm package publication

2. **Documentation** (High demand)
   - Quick start guides
   - Integration examples
   - Self-hosting tutorials
   - Node.js API reference

3. **Privacy Features** (High interest)
   - Fine-grained consent controls
   - PII detection and removal
   - Compliance automation (GDPR, CCPA)

4. **CLI Optimization** (Requested)
   - Minimal overhead (<1ms)
   - Graceful degradation
   - Offline-first design

5. **Self-Hosting** (Popular ask)
   - Simplified deployment
   - Cost-effective scaling
   - Cloud-parity features

---

## Non-Goals

Things we explicitly **won't** support:

❌ **Session Replay** - Too privacy-invasive
❌ **User Tracking Across Sites** - Against our privacy principles
❌ **PII Collection** - Anonymous by design
❌ **Vendor Lock-in** - Always self-hostable
❌ **Closed Source Features** - Core features always open source

---

## Versioning & Stability

### Semantic Versioning

We follow [SemVer 2.0](https://semver.org/):

- **Major (1.x.0):** Breaking changes
- **Minor (x.1.0):** New features (backwards compatible)
- **Patch (x.x.1):** Bug fixes

### Alpha/Beta Policy

- **Alpha** (0.x.0-alpha.y): Rapid iteration, expect breaking changes
- **Beta** (0.x.0-beta.y): Feature-complete, API stabilizing
- **RC** (0.x.0-rc.y): Production-ready, final testing

### Pre-1.0 Expectations

Before v1.0.0:
- ⚠️ APIs may change between minor versions
- ⚠️ Migration guides provided for breaking changes
- ⚠️ No long-term support guarantees
- ✅ Production use encouraged for non-critical applications

---

## Release Cadence

### Current (Pre-1.0)
- **Minor releases:** Every 6-8 weeks
- **Patch releases:** As needed (bugs, security)
- **Alpha/Beta:** As needed for testing

### Post-1.0
- **Major releases:** Yearly (with LTS)
- **Minor releases:** Quarterly
- **Patch releases:** Monthly (if needed)
- **Security patches:** Immediate

---

## Long-Term Vision (2-3 Years)

### Ecosystem Goals

**For Developers:**
- Telemetry as simple as `println!`
- Privacy compliance by default
- Zero vendor lock-in

**For Users:**
- Full control over their data
- Complete transparency
- Easy opt-out

**For the Rust Community:**
- Standard telemetry solution
- Best-in-class privacy practices
- Educational resource for observability

### Success Metrics

- **10,000+ crates** using telemetry-kit
- **100,000+ CLI tools** instrumented
- **1,000+ self-hosted** instances
- **Zero** privacy incidents
- **Top 100** most-used Rust crates

---

## How to Stay Updated

- 📰 **Changelog:** [CHANGELOG.md](CHANGELOG.md) - All releases
- 🐦 **Twitter/X:** [@ibrahimcesar](https://twitter.com/ibrahimcesar) - Major updates
- 💬 **Discussions:** [GitHub Discussions](https://github.com/ibrahimcesar/telemetry-kit/discussions) - Community chat
- 📧 **Newsletter:** Coming soon - Monthly updates
- 🔔 **Watch Releases:** Star & watch the repo for notifications

---

## Contributing to the Roadmap

### Proposing Features

1. **Search** existing [Discussions](https://github.com/ibrahimcesar/telemetry-kit/discussions)
2. **Open a Discussion** in "Ideas" category
3. **Describe:**
   - Use case and problem
   - Proposed solution
   - Alternative approaches
   - Privacy implications

4. **Community discussion** → **Issue creation** → **Implementation**

### Voting

Vote with 👍 on:
- GitHub Discussions
- GitHub Issues
- Pull Requests

We prioritize based on:
1. Community votes
2. Alignment with vision
3. Implementation feasibility
4. Maintenance burden

---

## Dependencies & Ecosystem

### Key Dependencies

We maintain minimal, well-audited dependencies:

- **Core:** serde, tokio, uuid, chrono
- **Storage:** rusqlite
- **Crypto:** hmac, sha2, hex
- **HTTP:** reqwest (optional, `sync` feature)
- **Privacy:** machine-uid (anonymous IDs)

### Supply Chain Security

- **SLSA Level 2** (current) ✅
- **SLSA Level 3** (target Q1 2025) 🔄
- **Dependency audits:** Weekly via `cargo audit`
- **License compliance:** Enforced via `cargo deny`

See [SLSA.md](SLSA.md) for details.

---

## Questions?

- 💬 **General questions:** [GitHub Discussions](https://github.com/ibrahimcesar/telemetry-kit/discussions)
- 🐛 **Bug reports:** [GitHub Issues](https://github.com/ibrahimcesar/telemetry-kit/issues)
- 🔒 **Security:** security@ibrahimcesar.com (see [SECURITY.md](SECURITY.md))
- 📧 **Contact:** email@ibrahimcesar.com

---

**This roadmap is a living document and will be updated as the project evolves.**

**Last Updated:** 2025-01-23
**Next Review:** Q2 2025