Crate go_duration 

Go time.Duration string parsing.

A small, dependency-free primitive that parses duration strings in the exact format accepted by Go’s time.ParseDuration. The Datadog Agent (via spf13/viper and spf13/cast) coerces configuration values into Go durations, and several places in Saluki need to interpret those same strings, including the runtime configuration layer and build-time config-schema codegen. This crate is the single owner of that algorithm so it isn’t duplicated in each of those places.

Two entry points are provided: parse_duration accepts only Go’s strict time.ParseDuration grammar, while parse_duration_or_nanos adds viper/cast’s coercion where a unit-less bare integer string (for example "30") is read as that many nanoseconds. Callers that need Agent-compatible configuration coercion should use the latter.

Enums

ParseDurationError

Error returned when a duration string can’t be parsed.

Constants

MAX_DURATION_NANOS

Maximum nanosecond value accepted for compatibility with Go’s time.Duration.

Functions

parse_duration

Parses a string in the exact format accepted by Go’s time.ParseDuration, restricted to non-negative values (since std::time::Duration can’t represent negatives).

parse_duration_or_nanos

Parses a duration string the way the Datadog Agent does: first as a strict Go duration via parse_duration, then as a bare integer count of nanoseconds when the trimmed input contains only an integer. For example, "30" becomes 30 nanoseconds. Surrounding whitespace is ignored.