Class: DiscordRDA::Tracer

Inherits:
Object
  • Object
show all
Defined in:
lib/discord_rda/core/tracer.rb

Defined Under Namespace

Classes: Span

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(enabled: false, logger: nil) ⇒ Tracer

Returns a new instance of Tracer.



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# File 'lib/discord_rda/core/tracer.rb', line 9

def initialize(enabled: false, logger: nil)
  @enabled = enabled
  @logger = logger
end

Instance Attribute Details

#enabled ⇒ Object (readonly)

Returns the value of attribute enabled.



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# File 'lib/discord_rda/core/tracer.rb', line 7

def enabled
  @enabled
end

Instance Method Details

#with_span(name, **attributes) ⇒ Object 



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# File 'lib/discord_rda/core/tracer.rb', line 14

def with_span(name, **attributes)
  return yield unless enabled

  span = Span.new(name: name, attributes: attributes, started_at: Time.now.utc)
  if defined?(::OpenTelemetry::Trace)
    tracer = ::OpenTelemetry.tracer_provider.tracer('discord_rda')
    tracer.in_span(name, attributes: attributes) { yield }
  else
    yield
  end
rescue StandardError => e
  span.error = e
  raise
ensure
  if enabled

    span.finished_at = Time.now.utc
    @logger&.debug(
      'Trace span',
      span: span.name,
      duration_ms: ((span.finished_at - span.started_at) * 1000).round(2),
      error: span.error&.class&.name,
      **span.attributes
    )
  end
end