📦 apmcheck

apmcheck is a CLI tool that analyzes your source code and reports how many functions, endpoints or handlers are instrumented with APM (Application Performance Monitoring) — supporting Datadog and OpenTelemetry.

It helps you identify tracing gaps across services, ensure observability coverage, and enforce best practices across all teams and languages.

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🎯 Use Cases

• ✅ Detect missing spans or trace decorators before production
• ✅ Ensure APM coverage in new pull requests
• ✅ Track APM adoption over time
• ✅ Integrate into CI/CD pipelines (--min-coverage)
• ✅ Audit large monoliths or microservices for observability

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🚀 Features

• 🌍 Multivendor support: Datadog & OpenTelemetry
• 🧠 Static code analysis (no runtime or instrumentation required)
• 📊 Coverage report: traced vs untraced functions
• 📂 Per-file and total breakdown
• 🧪 CI/CD compatible with --min-coverage=X
• 🔌 Extensible: Add custom rules, patterns, and APM SDKs
• 💡 Multilanguage support: Python, Node.js, Go, Java

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🔧 Installation

Clone the repository and install locally:

git clone https://github.com/msalinas92/apmcheck.git  
cd apmcheck  
pip install -e .

Or install directly from PyPI (if published):

pip install apmcheck

You can now use the CLI:

apmcheck --help

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🌐 Supported Languages

Language	Datadog Supported	OpenTelemetry Supported	apmcheck Support
Python	✅	✅	✅
Node.js	✅	✅	✅
Go	✅	✅	✅
Java	✅	✅	✅
Ruby	✅	✅	🔜 Planned
PHP	✅	✅	🔜 Planned
.NET (C#)	✅	✅	🔜 Planned
C++	✅ (partial)	✅	🔜 Planned
Rust	❌	✅	🔜 Planned

More languages may be supported via plugin-based detectors.

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🧪 Example Usage

Basic usage:

apmcheck ./src --language python --apm datadog

Sample output:

📦 Project: ./src  
🔍 Language: Python  
📈 APM Provider: Datadog

-------------------------------------------------------------------------
File                                                    Traced   Total   Coverage   Imports Traced   Inits Traced
users.py                                                3        4       75.0%      1               1
payments.py                                             5        5       100.0%     1               1
orders.py                                               1        6       16.7%      1               0

Total                                                   9        15      60.0%      3               2

CI mode with threshold:

apmcheck ./src --language go --apm opentelemetry --min-coverage 80

With webhook:

apmcheck ./src --language python --apm datadog --webhook https://my.webhook.url

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🧠 How It Works

1. Parses code using language-specific ASTs
2. Detects functions, endpoints, or handlers
3. Matches known APM patterns (decorators, wrappers, spans, etc.)
4. Reports coverage and optionally fails CI if threshold not met
5. Can send the report to a webhook (JSON)

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🛠️ Roadmap

• Add support for Java, Go, Node.js and Python
• Dynamic mode (compare traced runtime vs statically detected functions)
• GitHub/GitLab PR check integration
• Visual dashboard of APM coverage per service

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🤝 Contributing

Contributions, issues and feature requests are welcome!
Feel free to check issues page.

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📄 License

Apache 2.0 License. See LICENSE for details.