ocpp/datetime

Date-time seam.

OCPP timestamps are RFC 3339 / ISO 8601 strings on the wire, modelled as gleam/time/timestamp.Timestamp. This module owns the OCPP wire policy: parsing accepts any RFC 3339 offset, and encoding always renders UTC with a trailing Z (fractional seconds only when non-zero). The JSON codecs for the type live in ocpp/transport/json/codec, where a string that is not a valid RFC 3339 timestamp fails to decode — the same treatment the schemas’ other value constraints get.

Types

DateTime

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An OCPP timestamp: an instant in time, RFC 3339 on the wire.

pub type DateTime =
  timestamp.Timestamp

Values

parse_rfc3339

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pub fn parse_rfc3339(
  value: String,
) -> Result(timestamp.Timestamp, Nil)

Parse an RFC 3339 timestamp (e.g. 2026-01-01T00:00:00Z).

to_rfc3339

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pub fn to_rfc3339(value: timestamp.Timestamp) -> String

Render as RFC 3339 in UTC with a trailing Z, as OCPP expects.