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Worker

Go Report Status Discord Chat Lab release Apache-2.0 License

Worker is a simple HTTP server that accepts FQL queries, executes them and returns their results. OpenAPI v2 schema can be found here.

Quick start

The Worker is shipped with dedicated Docker image that contains headless Google Chrome, so feel free to run queries using cdp driver:

DockerHub

docker run -d -p 8080:8080 montferret/worker

GitHub

docker run -d -p 8080:8080 ghcr.io/montferret/worker

Alternatively, if you want to use your own version of Chrome, you can run the Worker locally.

By installing the binary:

curl https://raw.githubusercontent.com/MontFerret/worker/master/install.sh | sh
worker

Or by building locally:

make

And then just make a POST request:

worker

System Resource Requirements

  • 2 CPU
  • 2 Gb of RAM

Usage

Endpoints

POST /

Executes a given query. The payload must have the following shape:

Query {
    text: String!
    params: Map<string, any>
}

GET /info

Returns a worker information that contains details about Chrome, Ferret and itself. Has the following shape:

Info {
    ip: String!
    version: Version! {
        worker: String!
        chrome: ChromeVersion! {
            browser: String!
            protocol: String!
            v8: String!
            webkit: String!
        }
        ferret: String!
    }
}

GET /health

Health check endpoint (for Kubernetes, e.g.). Returns empty 200.

Run commands

  -log-level="debug"
    log level
  -port=8080
    port to listen
  -body-limit=1000
    maximum size of request body in kb. 0 means no limit.
  -request-limit=20
    amount of requests per second for each IP. 0 means no limit.
  -request-limit-time-window=180
    amount of seconds for request rate limit time window.
  -cache-size=100
    amount of cached queries. 0 means no caching.
  -chrome-ip="127.0.0.1"
    Google Chrome remote IP address
  -chrome-port=9222
    Google Chrome remote debugging port
  -no-chrome=false
    disable Chrome driver
  -version=false
    show version
  -help=false
    show this list