class LittleGhost::Instrumentation::Subscriber

Subclass Subscriber to connect a telemetry backend.

Override the callbacks a backend supports. start and finish receive the same operation name and correlated attributes. emit receives point events. Implementations may return a propagation carrier from trace_context. Callbacks should be thread-safe.

Public Instance Methods

emit (_name, _attributes)

Source

# File lib/little_ghost/instrumentation.rb, line 43
def emit(_name, _attributes) = nil

Called for a point-in-time instrumentation event.

finish (_name, _attributes)

Source

# File lib/little_ghost/instrumentation.rb, line 41
def finish(_name, _attributes) = nil

Called when a lifecycle operation finishes.

flush (timeout: nil)

Source

# File lib/little_ghost/instrumentation.rb, line 45
def flush(timeout: nil) = nil

Flushes buffered telemetry within an optional timeout budget.

shutdown (timeout: nil)

Source

# File lib/little_ghost/instrumentation.rb, line 47
def shutdown(timeout: nil) = nil

Releases subscriber resources within an optional timeout budget.

start (_name, _attributes)

Source

# File lib/little_ghost/instrumentation.rb, line 39
def start(_name, _attributes) = nil

Called when a lifecycle operation starts.

trace_context (**)

Source

# File lib/little_ghost/instrumentation.rb, line 49
def trace_context(**) = {}

Supplies trace fields that should travel with downstream work.