class ActionSubscriber::OpenTracing::Middleware
Public Class Methods
new(app)
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# File lib/action_subscriber/opentracing/middleware.rb, line 8 def initialize(app) @app = app end
Public Instance Methods
call(env)
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# File lib/action_subscriber/opentracing/middleware.rb, line 12 def call(env) operation = "Subscriber #{env.subscriber}##{env.action}" parent = ::OpenTracing.extract(::OpenTracing::FORMAT_TEXT_MAP, env.headers) published_at = env.headers["published_at"] options = {} options[:references] = [::OpenTracing::Reference.follows_from(parent)] if parent options[:tags] = { "span.kind" => "consumer", "component" => "ActionSubscriber", "message_bus.destination" => env.routing_key, "message_bus.processed_at" => Time.now.strftime("%F %T.%3N %Z") } options[:tags]["message_bus.published_at"] = published_at if published_at result = nil ::OpenTracing.start_active_span(operation, options) do result = @app.call(env) end result end