weatherfeeder/docs/consumers/pkg-standards.md

Package standards

Import Path

import "gitea.maximumdirect.net/ejr/weatherfeeder/standards"

Purpose

Package standards defines stable identifiers and shared weather constants used by weatherfeeder producers and Go consumers.

Use this package when switching on event schemas, comparing event kinds, or working with canonical WMO condition codes.

Event Kind Constants

Current event kind constants are:

Constant	Value
KindObservation	observation
KindForecast	forecast
KindForecastDiscussion	forecast_discussion
KindWeatherStory	weather_story
KindAlert	alert
KindOutlook	outlook

These are plain string constants. Convert them at adapter boundaries when using feedkit's event.Kind type.

Canonical Schema Constants

Canonical schemas emitted after normalization:

Constant	Value
SchemaWeatherObservationV1	weather.observation.v1
SchemaWeatherForecastV1	weather.forecast.v1
SchemaWeatherForecastDiscussionV1	weather.forecast_discussion.v1
SchemaWeatherStoryV1	weather.weather_story.v1
SchemaWeatherAlertV1	weather.alert.v1
SchemaWeatherOutlookV1	weather.outlook.v1

Raw Schema Constants

Raw source schemas emitted by current registered sources:

Constant	Value
SchemaRawNWSObservationV1	raw.nws.observation.v1
SchemaRawOpenMeteoCurrentV1	raw.openmeteo.current.v1
SchemaRawOpenWeatherCurrentV1	raw.openweather.current.v1
SchemaRawNWSHourlyForecastV1	raw.nws.hourly.forecast.v1
SchemaRawNWSNarrativeForecastV1	raw.nws.narrative.forecast.v1
SchemaRawNWSForecastDiscussionV1	raw.nws.forecast_discussion.v1
SchemaRawNWSWeatherStoriesV1	raw.nws.weatherstories.v1
SchemaRawOpenMeteoHourlyForecastV1	raw.openmeteo.hourly.forecast.v1
SchemaRawNWSAlertsV1	raw.nws.alerts.v1
SchemaRawSPCConvectiveOutlookV1	raw.spc.convective_outlook.v1

Additional raw schema constant:

Constant	Value
SchemaRawOpenWeatherHourlyForecastV1	raw.openweather.hourly.forecast.v1

SchemaRawOpenWeatherHourlyForecastV1 exists in code, but no current registered source emits it. Consumers should not expect that raw schema unless a later registered source documents it as part of the current event contract.

WMO Constants And Text

standards also defines the canonical WMOCode vocabulary and text helpers used by normalized observations and forecasts.

Consumer guidance:

• Treat WMOUnknown as unknown condition data.
• Observation conditionCode is required in the current event contract.
• Forecast period conditionCode is optional because some forecast products do not provide a meaningful WMO condition.
• Prefer WMO constants and helper functions from this package instead of duplicating code tables in consumers.

Boundaries

standards is provider-agnostic. Provider-specific parsing belongs in weatherfeeder internals, not in this package and not in consumers.