class OpenTracing::ScopeManager
ScopeManager
represents an OpenTracing
ScopeManager
See www.opentracing.io for more information.
The ScopeManager
interface abstracts both the activation of Span
instances via ScopeManager#activate
and access to an active Span/Scope via ScopeManager#active
Constants
- NOOP_INSTANCE
Public Instance Methods
Make a span instance active.
@param span [Span] the Span
that should become active @param finish_on_close [Boolean] whether the Span
should automatically be
finished when Scope#close is called
@return [Scope] instance to control the end of the active period for the
Span. It is a programming error to neglect to call Scope#close on the returned instance.
# File lib/opentracing/scope_manager.rb, line 21 def activate(span, finish_on_close: true) Scope::NOOP_INSTANCE end
@return [Scope] the currently active Scope
which can be used to access the currently active Span
.
If there is a non-null Scope
, its wrapped Span
becomes an implicit parent (as Reference#CHILD_OF) of any newly-created Span
at Tracer#start_active_span
or Tracer#start_span
time.
# File lib/opentracing/scope_manager.rb, line 31 def active Scope::NOOP_INSTANCE end