Class: OpenTelemetry::Trace::Tracer

Inherits:
Object
  • Object
show all
Defined in:
lib/opentelemetry/trace/tracer.rb

Overview

No-op implementation of Tracer.

Instance Method Summary collapse

Instance Method Details

#in_span(name, attributes: nil, links: nil, start_timestamp: nil, kind: nil, with_parent: nil) {|span, context| ... } ⇒ Object

This is a helper for the default use-case of extending the current trace with a span.

With this helper:

OpenTelemetry.tracer.in_span('do-the-thing') do … end

Equivalent without helper:

OpenTelemetry::Trace.with_span(tracer.start_span('do-the-thing')) do … end

On exit, the Span that was active before calling this method will be reactivated. If an exception occurs during the execution of the provided block, it will be recorded on the span and reraised.

Yields:

  • (span, context) —

    yields the newly created span and a context containing the span to the block.



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# File 'lib/opentelemetry/trace/tracer.rb', line 26

def in_span(name, attributes: nil, links: nil, start_timestamp: nil, kind: nil, with_parent: nil)
  span = nil
  span = start_span(name, attributes: attributes, links: links, start_timestamp: start_timestamp, kind: kind, with_parent: with_parent)
  Trace.with_span(span) { |s, c| yield s, c }
rescue Exception => e # rubocop:disable Lint/RescueException
  span&.record_exception(e)
  span&.status = Status.new(Status::ERROR,
                            description: "Unhandled exception of type: #{e.class}")
  raise e
ensure
  span&.finish
end

#start_root_span(name, attributes: nil, links: nil, start_timestamp: nil, kind: nil) ⇒ Object 



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# File 'lib/opentelemetry/trace/tracer.rb', line 39

def start_root_span(name, attributes: nil, links: nil, start_timestamp: nil, kind: nil)
  Span.new
end

#start_span(name, with_parent: nil, attributes: nil, links: nil, start_timestamp: nil, kind: nil) ⇒ Span

Used when a caller wants to manage the activation/deactivation and lifecycle of the Span and its parent manually.

Parent context can be either passed explicitly, or inferred from currently activated span.

Parameters:

  • with_parent (optional Context) (defaults to: nil) —

    Explicitly managed parent context

Returns:



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# File 'lib/opentelemetry/trace/tracer.rb', line 51

def start_span(name, with_parent: nil, attributes: nil, links: nil, start_timestamp: nil, kind: nil)
  span_context = OpenTelemetry::Trace.current_span(with_parent).context

  if span_context.valid?
    Span.new(span_context: span_context)
  else
    Span.new
  end
end