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Contents
class PryRails::ShowMiddleware < Pry::ClassCommand
match 'show-middleware'
group 'Rails'
description 'Show all middleware (that Rails knows about).'
banner <<-BANNER
Usage: show-middleware [-G]
show-middleware shows the Rails app's middleware.
If this pry REPL is attached to a Rails server, the entire middleware
stack is displayed. Otherwise, only the middleware Rails knows about is
printed.
BANNER
def options(opt)
opt.on :G, "grep", "Filter output by regular expression", :argument => true
end
def process
# assumes there is only one Rack::Server instance
server = nil
ObjectSpace.each_object(Rack::Server) do |object|
server = object
end
middlewares = []
if server
stack = server.instance_variable_get("@wrapped_app")
middlewares << stack.class.to_s
while stack.instance_variable_defined?("@app") do
stack = stack.instance_variable_get("@app")
# Rails 3.0 uses the Application class rather than the application
# instance itself, so we grab the instance.
stack = Rails.application if stack == Rails.application.class
middlewares << stack.class.to_s if stack != Rails.application
end
else
middleware_names = Rails.application.middleware.map do |middleware|
# After Rails 3.0, the middleware are wrapped in a special class
# that responds to #name.
if middleware.respond_to?(:name)
middleware.name
else
middleware.inspect
end
end
middlewares.concat middleware_names
end
middlewares << Rails.application.class.to_s
print_middleware middlewares.grep(Regexp.new(opts[:G] || "."))
end
def print_middleware(middlewares)
middlewares.each do |middleware|
string = if middleware == Rails.application.class.to_s
"run #{middleware}.routes"
else
"use #{middleware}"
end
output.puts string
end
end
PryRails::Commands.add_command(self)
end
Version data entries
11 entries across 11 versions & 3 rubygems