Telemetry event names emitted by Continuum.

Continuum uses the :telemetry package directly. Event names are stable lists under the [:continuum, ...] prefix and metadata always includes the most specific identifiers available for the transition, such as :run_id, :task_id, :timer_id, :signal_name, :owner, or :lease_token.

Runtime events

• [:continuum, :run, :started]
• [:continuum, :run, :suspended]
• [:continuum, :run, :completed]
• [:continuum, :run, :failed]
• [:continuum, :run, :cancelled]
• [:continuum, :run, :lease_lost]
• [:continuum, :run, :forwarded]
• [:continuum, :run, :unknown_version]
• [:continuum, :patched, :hit]
• [:continuum, :compensation, :scheduled]
• [:continuum, :compensation, :started]
• [:continuum, :compensation, :completed]
• [:continuum, :compensation, :failed]
• [:continuum, :child, :started]
• [:continuum, :child, :completed]
• [:continuum, :child, :failed]
• [:continuum, :run, :continued_as_new]
• [:continuum, :activity, :scheduled]
• [:continuum, :activity, :started]
• [:continuum, :activity, :completed]
• [:continuum, :activity, :failed]
• [:continuum, :activity, :idempotency_hit]
• [:continuum, :activity, :retried]
• [:continuum, :timer, :scheduled]
• [:continuum, :timer, :fired]
• [:continuum, :signal, :awaited]
• [:continuum, :signal, :delivered]
• [:continuum, :signal, :received]
• [:continuum, :lease, :acquired]
• [:continuum, :lease, :renewed]
• [:continuum, :lease, :lost]
• [:continuum, :dispatcher, :polled]
• [:continuum, :dispatcher, :claimed]
• [:continuum, :activity_dispatcher, :polled]
• [:continuum, :activity_dispatcher, :claimed]
• [:continuum, :recovery, :completed]
• [:continuum, :snapshot, :taken]
• [:continuum, :snapshot, :skipped]

Measurements are intentionally small and conventional: most events emit %{count: n} or %{duration_ms: n} when there is a meaningful number, otherwise %{}.

When a Postgres-backed await signal(...) consumes a signal that was already pending in the durable mailbox, Continuum emits [:continuum, :signal, :received] without a preceding [:continuum, :signal, :awaited]; there was no suspended await period to bracket.

OpenTelemetry bridge

Continuum.OpenTelemetry.setup/1 can attach an optional bridge that turns the run and activity lifecycle events above into OpenTelemetry spans. The bridge is opt-in and uses runtime checks, so Continuum compiles and runs without OpenTelemetry packages installed.