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# frozen_string_literal: true
# rubocop:disable Style/ClassVars
# This is inspired by http://www.salsify.com/blog/engineering/tearing-capybara-ajax-tests
# Rack middleware that keeps track of the number of active requests and can block new requests.
module Gitlab
module Testing
class ActionCableBlocker
@@num_active_requests = Concurrent::AtomicFixnum.new(0)
@@block_requests = Concurrent::AtomicBoolean.new(false)
# Returns the number of requests the server is currently processing.
def self.num_active_requests
@@num_active_requests.value
end
# Prevents the server from accepting new requests. Any new requests will be skipped.
def self.block_requests!
@@block_requests.value = true
end
# Allows the server to accept requests again.
def self.allow_requests!
@@block_requests.value = false
end
def self.install
::ActionCable::Server::Worker.set_callback :work, :around do |_, inner|
@@num_active_requests.increment
inner.call if @@block_requests.false?
ensure
@@num_active_requests.decrement
end
end
end
end
end
# rubocop:enable Style/ClassVars
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