Prometheus Weathermen

“You don't need a weatherman to know which way the wind blows”
       — Bob Dylan, Subterranean Homesick Blues

A prometheus exporter endpoint for weather data or my excuse to do some Rust for real.

What it does

Provides a Prometheus metrics endpoint on <host>:36333/metrics and serves the following metrics for configured location from each configured provider:

• weather_temperature_celsius
• weather_relative_humidity_ratio

Configuration

Check weathermen.toml.dist for configuration options.

Configuration values can also be set from environment variables with the prefix PROMW_. For example, to set the HTTP port from an environment variable, use PROMW_HTTP__PORT=12345. The double underscore is not a typo, it is necessary to disambiguate hierarchy from name. Assume this TOML config:

toml [provider.open_weather] api_key = "XYZ"

The corresponding env variable would be PROMW_PROVIDER__OPEN_WEATHER__API_KEY.