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# frozen_string_literal: true
##
# Mixin methods for Gem::Command to promote available RubyGems update
module Gem::UpdateSuggestion
# list taken from https://github.com/watson/ci-info/blob/7a3c30d/index.js#L56-L66
CI_ENV_VARS = [
"CI", # Travis CI, CircleCI, Cirrus CI, Gitlab CI, Appveyor, CodeShip, dsari
"CONTINUOUS_INTEGRATION", # Travis CI, Cirrus CI
"BUILD_NUMBER", # Jenkins, TeamCity
"CI_APP_ID", "CI_BUILD_ID", "CI_BUILD_NUMBER", # Applfow
"RUN_ID" # TaskCluster, dsari
].freeze
ONE_WEEK = 7 * 24 * 60 * 60
##
# Message to promote available RubyGems update with related gem update command.
def update_suggestion
<<-MESSAGE
A new release of RubyGems is available: #{Gem.rubygems_version} → #{Gem.latest_rubygems_version}!
Run `gem update --system #{Gem.latest_rubygems_version}` to update your installation.
MESSAGE
end
##
# Determines if current environment is eglible for update suggestion.
def eglible_for_update?
# explicit opt-out
return false if Gem.configuration[:prevent_update_suggestion]
return false if ENV["RUBYGEMS_PREVENT_UPDATE_SUGGESTION"]
# focus only on human usage of final RubyGems releases
return false unless Gem.ui.tty?
return false if Gem.rubygems_version.prerelease?
return false if Gem.disable_system_update_message
return false if ci?
# check makes sense only when we can store timestamp of last try
# otherwise we will not be able to prevent "annoying" update message
# on each command call
return unless Gem.configuration.state_file_writable?
# load time of last check, ensure the difference is enough to repeat the suggestion
check_time = Time.now.to_i
last_update_check = Gem.configuration.last_update_check
return false if (check_time - last_update_check) < ONE_WEEK
# compare current and latest version, this is the part where
# latest rubygems spec is fetched from remote
if (Gem.rubygems_version < Gem.latest_rubygems_version)
# store the time of last successful check into state file
Gem.configuration.last_update_check = check_time
return true
end
rescue # don't block install command on any problem
false
end
def ci?
CI_ENV_VARS.any? {|var| ENV.include?(var) }
end
end
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