class Atatus::Middleware

@api private

Public Class Methods

new(app) click to toggle source
# File lib/atatus/middleware.rb, line 26
def initialize(app)
  @app = app
end

Public Instance Methods

call(env) click to toggle source
# File lib/atatus/middleware.rb, line 30
def call(env)
  begin
    if running? && !path_ignored?(env)
      transaction = start_transaction(env)
    end

    resp = @app.call env
  rescue InternalError
    raise # Don't report Atatus errors
  rescue ::Exception => e
    context = Atatus.build_context(rack_env: env, for_type: :error)
    Atatus.report(e, context: context, handled: false)
    raise
  ensure
    if resp && transaction
      status, headers, _body = resp
      transaction.add_response(status, headers: headers.dup)
    end

    Atatus.end_transaction http_result(status)
  end

  resp
end

Private Instance Methods

config() click to toggle source
# File lib/atatus/middleware.rb, line 92
def config
  @config ||= Atatus.agent.config
end
http_result(status) click to toggle source
# File lib/atatus/middleware.rb, line 57
def http_result(status)
  status && "HTTP #{status.to_s[0]}xx"
end
path_ignored?(env) click to toggle source
# File lib/atatus/middleware.rb, line 61
def path_ignored?(env)
  return true if config.ignore_url_patterns.any? do |r|
    r.match(env['PATH_INFO'])
  end

  return true if config.transaction_ignore_urls.any? do |r|
    r.match(env['PATH_INFO'])
  end

  false
end
running?() click to toggle source
# File lib/atatus/middleware.rb, line 88
def running?
  Atatus.running?
end
start_transaction(env) click to toggle source
# File lib/atatus/middleware.rb, line 73
def start_transaction(env)
  context = Atatus.build_context(rack_env: env, for_type: :transaction)

  Atatus.start_transaction 'Rack', 'request',
    context: context,
    trace_context: trace_context(env)
end
trace_context(env) click to toggle source
# File lib/atatus/middleware.rb, line 81
def trace_context(env)
  TraceContext.parse(env: env)
rescue TraceContext::InvalidTraceparentHeader => e
  warn e.message
  nil
end