GateKeeper is a web application designed to sit between internal API endpoints and public users. It provides a central facility for logging, analyzing, rate-limiting, and credentialing access.
- Dashboard: List of all mapped endpoints ordered by current traffic. Charts request count, response time, and cache hit ratio in real-time
- Create and configure endpoint mappings: Create new or configure existing public endpoints that map to internal API endpoints from the web GUI
- Versioning: Optionally maintain multiple versions for any endpoint
- Email alerts: Configure an administrative contact for each endpoint to receive email alerts when it returns a 5xx error or times out
- Deprecation: Set a deprecation date for an API and an appropriate HTTP status will be returned once that date is reached
- Rewrites: Regex-powered rewrites can be created and managed from the web GUI for any endpoint
- Caching: Duplicate requests are served from memory without hitting the internal API endpoint again if the original response included caching headers. Cached responses can be browsed by endpoint
- Rate limiting: Global and per-user rate limits configurable for each endpoint
- Bandwidth limiting: Global bandwidth limits configurable for each endpoint
- Key management: Configure endpoints to require keys, issue keys, and grant keys access to individual or all endpoints with an optional expiration date.
- Ban management: Ban a key or an IP permanently or until a given date
- Logging: Exportable logs record endpoint, path, response code, response time, response size, client IP, and key if provided for every transaction
- Top users report: View top users by IP or key over any given time period, globally or for a given endpoint
- Uptime monitoring: Ping your internal endpoints on a regular interval to test for a healthy response with an optional regex pattern for the response body
These features are currently under development for the next release:
- Historical metrics
- Email subscriptions for the public to receive notices about specific endpoints
- Public portal endpoints' status, documentation, and test consoles
- Public portal for obtaining API keys
- Advanced filtering, sorting, and searching for transactions log
The GateKeeper application is built on the Emergence PHP framework and deployment engine, and requires an Emergence server to host it.
Emergence takes just a few minutes to setup on a Linux VM, and is designed to have a fresh system to itself. Once launched it will configure services on the machine as-needed to host an instance of the application along with any other sites, clones, or child sites. The guides for Ubuntu and Gentoo are most up-to-date: http://emr.ge/docs/setup
- Create an emergence site that extends http://[email protected]
This video walks through the complete process of installing emergence and then instantiating the GateKeeper application:
- Create an emergence site that extends http://[email protected]
- Upload contents of git repository using WebDAV client (CyberDuck is the best open-source option)
printf "*/5 *\t* * *\troot\temergence-fire-event gatekeeper-test heartbeat Gatekeeper > /dev/null\n" | sudo tee /etc/cron.d/gatekeeper-heartbeat