class Labkit::Tracing::AbstractInstrumenter

edgeapi.rubyonrails.org/classes/ActiveSupport/Notifications/Instrumenter.html#method-c-new

Public Instance Methods

finish(_name, _id, payload) click to toggle source
# File lib/labkit/tracing/abstract_instrumenter.rb, line 15
def finish(_name, _id, payload)
  scope = scope_stack.pop
  span = scope.span

  Labkit::Tracing::TracingUtils.log_common_fields_on_span(span, span_name(payload))

  # exception_object is the standard exception payload from ActiveSupport::Notifications
  # https://github.com/rails/rails/blob/v6.0.3.1/activesupport/lib/active_support/notifications/instrumenter.rb#L26
  exception = payload[:exception_object].presence || payload[:exception].presence
  Labkit::Tracing::TracingUtils.log_exception_on_span(span, exception)

  tags(payload).each do |k, v|
    span.set_tag(k, v)
  end

  scope.close
end
scope_stack() click to toggle source
# File lib/labkit/tracing/abstract_instrumenter.rb, line 33
def scope_stack
  Thread.current[:_labkit_trace_scope_stack] ||= []
end
span_name(_payload) click to toggle source
# File lib/labkit/tracing/abstract_instrumenter.rb, line 37
def span_name(_payload)
  raise "span_name not implemented"
end
start(_name, _id, payload) click to toggle source
# File lib/labkit/tracing/abstract_instrumenter.rb, line 9
def start(_name, _id, payload)
  scope = OpenTracing.start_active_span(span_name(payload))

  scope_stack.push scope
end
tags(_payload) click to toggle source
# File lib/labkit/tracing/abstract_instrumenter.rb, line 41
def tags(_payload)
  {}
end