TraceContext.Serve.usable: def of bend-trace-context@0.2.0.0
Import: import bend-trace-context@0.2.0.0/trace_context.bend as TraceContext
Lines 3554-3562 of bend-trace-context@0.2.0.0/trace_context.bend: https://jend.leeeet.dev/read.txt?path=bend-trace-context@0.2.0.0/trace_context.bend&start_line=3554&end_line=3562

import Base

# Continue the kept context with a child, with its parent and state, or
# replace it with a new trace, as `reception` says.
def Serve.usable(+base: BaseContext, received: Maybe<&2, IncomingContext>, reception: Reception,
  sampling: Sampling) -> ServicePlan:
  match reception:
    case Continue{}:
      ContinuePlan{Generation.child(BaseContext.parent(base), sampling), BaseContext.state(base), received}
    case Restart{}:
      StartPlan{Generation.restart(Serve.replaced(base), Serve.new_trace_sampled(sampling)), Restarted{}}

Uses (13):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=bend-trace-context@0.2.0.0/trace_context.bend&name=BaseContext
  https://jend.leeeet.dev/definition.txt?path=bend-trace-context@0.2.0.0/trace_context.bend&name=BaseContext.parent
  https://jend.leeeet.dev/definition.txt?path=bend-trace-context@0.2.0.0/trace_context.bend&name=BaseContext.state
  https://jend.leeeet.dev/definition.txt?path=bend-trace-context@0.2.0.0/trace_context.bend&name=Generation.child
  https://jend.leeeet.dev/definition.txt?path=bend-trace-context@0.2.0.0/trace_context.bend&name=Generation.restart
  https://jend.leeeet.dev/definition.txt?path=bend-trace-context@0.2.0.0/trace_context.bend&name=IncomingContext
  https://jend.leeeet.dev/definition.txt?path=bend-trace-context@0.2.0.0/trace_context.bend&name=Origin
  https://jend.leeeet.dev/definition.txt?path=bend-trace-context@0.2.0.0/trace_context.bend&name=Reception
  https://jend.leeeet.dev/definition.txt?path=bend-trace-context@0.2.0.0/trace_context.bend&name=Sampling
  https://jend.leeeet.dev/definition.txt?path=bend-trace-context@0.2.0.0/trace_context.bend&name=Serve.new_trace_sampled
  https://jend.leeeet.dev/definition.txt?path=bend-trace-context@0.2.0.0/trace_context.bend&name=Serve.replaced
  https://jend.leeeet.dev/definition.txt?path=bend-trace-context@0.2.0.0/trace_context.bend&name=ServicePlan