module DatadogTraceWrapper

CoreUsage: extend DatadogTraceWrapper

Public Instance Methods

trace(*method_names, span_type:, service: nil, resource: nil, **trace_kwargs) click to toggle source

Instructs the class to wrap methods for custom datadog tracing

Parameters: ↑

*method_names

A list of method name symbols to trace `:method1, :method2`

span_type

Keyword argument (string) specifying the name of the span

Optional Parameters: ↑

service

String specifying the service to include this span within. Defaults to DD_TRACE_METHOD_WRAPPER_SERVICE

resource

String specifying what to call the trace segment in the span Defaults to ClassName#Method

trace_kwargs

Keyword arguments passed through to Datadog.tracer.trace, listed here: docs.datadoghq.com/tracing/setup/ruby/#manual-instrumentation

Calls superclass method 
# File lib/datadog_trace_wrapper.rb, line 24
def trace(*method_names, span_type:, service: nil, resource: nil, **trace_kwargs)

  method_names.each do |m|
    proxy = Module.new do
      define_method(m) do |*args, **kwargs|
        service  ||= ENV['DD_TRACE_METHOD_WRAPPER_SERVICE']
        resource ||= "#{self.class.name}##{m.to_s}"
        Datadog.tracer.trace(
          span_type,
          service: service,
          resource: resource,
          **trace_kwargs
        ) do
          super(*args, **kwargs)
        end
      end
    end

    self.prepend proxy
  end
end