The on-the-wire shape of the log stream, selected by configuration.

Parse a LogFormat from its wire name, naming the accepted set on failure.

>>> parseLogFormat "json"
Right JsonLog

>>> parseLogFormat "yaml"
Left "unknown log format \"yaml\" (expected one of: json, console)"

The lowest severity the stream keeps, selected by configuration. The four values are the ones severityStatus renders into the status field.

Parse a LogLevel from its wire name, naming the accepted set on failure.

>>> parseLogLevel "warn"
Right WarnLevel

>>> parseLogLevel "trace"
Left "unknown log level \"trace\" (expected one of: debug, info, warn, error)"

Build the LogEnv: one stdout scribe in format that keeps items at or above level. The formatter stamps logIdentity on every line, so a line outside a span names its service.

The structured context naming the source module a log line came from. Compose it into a log site's payload so a reader filters the stream by emitter without the katip namespace.

Run action in a context naming its emitting module. A phase that holds no Handler reader, such as boot or a worker loop, enters the log stream this way.

Log one line through a composition-root LogEnv under payload, for a caller whose context is a payload rather than a module name.

One line under a moduleField naming the emitting module and nothing else.

The unified-service identity stamped onto every log line, resolved by Ecluse.Runtime.Telemetry.Resolve so logs and traces share one identity.

The active span's ids, rendered in the Datadog form by Ecluse.Runtime.Telemetry.Correlation. They are Text, so this type needs no OTel dependency.

The dd object as a katip payload under the dd key. Install it as the initial context of a request or worker scope so every line there carries that scope's active span.