class Sidekiq::Logging::Pretty

def call(severity, time, program_name, message)

Provide a call() method that returns the formatted message. 
def call(severity, time, program_name, message)
  "#{time.utc.iso8601} #{Process.pid} TID-#{Thread.current.object_id.to_s(36)}#{context} #{severity}: #{message}\n"
end

def context 

def context
  c = Thread.current[:sidekiq_context]
  c ? " #{c}" : ''
end