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module SystemCheck
# Simple Executor is current default executor for GitLab
# It is a simple port from display logic in the old check.rake
#
# There is no concurrency level and the output is progressively
# printed into the STDOUT
#
# @attr_reader [Array<BaseCheck>] checks classes of corresponding checks to be executed in the same order
# @attr_reader [String] component name of the component relative to the checks being executed
class SimpleExecutor
attr_reader :checks
attr_reader :component
# @param [String] component name of the component relative to the checks being executed
def initialize(component)
raise ArgumentError unless component.is_a? String
@component = component
@checks = Set.new
end
# Add a check to be executed
#
# @param [BaseCheck] check class
def <<(check)
raise ArgumentError unless check.is_a?(Class) && check < BaseCheck
@checks << check
end
# Executes defined checks in the specified order and outputs confirmation or error information
def execute
start_checking(component)
@checks.each do |check|
run_check(check)
end
finished_checking(component)
end
# Executes a single check
#
# @param [SystemCheck::BaseCheck] check_klass
def run_check(check_klass)
$stdout.print "#{check_klass.display_name} ... "
check = check_klass.new
# When implements skip method, we run it first, and if true, skip the check
if check.can_skip? && check.skip?
$stdout.puts check.skip_reason.try(:color, :magenta) || check_klass.skip_reason.color(:magenta)
return
end
# When implements a multi check, we don't control the output
if check.multi_check?
check.multi_check
return
end
if check.check?
$stdout.puts check_klass.check_pass.color(:green)
else
$stdout.puts check_klass.check_fail.color(:red)
if check.can_repair?
$stdout.print 'Trying to fix error automatically. ...'
if check.repair!
$stdout.puts 'Success'.color(:green)
return
else
$stdout.puts 'Failed'.color(:red)
end
end
check.show_error
end
rescue StandardError => e
$stdout.puts "Exception: #{e.message}".color(:red)
end
private
# Prints header content for the series of checks to be executed for this component
#
# @param [String] component name of the component relative to the checks being executed
def start_checking(component)
$stdout.puts "Checking #{component.color(:yellow)} ..."
$stdout.puts ''
end
# Prints footer content for the series of checks executed for this component
#
# @param [String] component name of the component relative to the checks being executed
def finished_checking(component)
$stdout.puts ''
$stdout.puts "Checking #{component.color(:yellow)} ... #{'Finished'.color(:green)}"
$stdout.puts ''
end
end
end
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