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require "librarian/manifest_set"
require "librarian/spec_change_set"
require "librarian/action/base"
module Librarian
module Action
class Install < Base
def run
check_preconditions
perform_installation
end
private
def check_preconditions
check_specfile
check_lockfile
check_consistent
end
def check_specfile
raise Error, "#{specfile_name} missing!" unless specfile_path.exist?
end
def check_lockfile
raise Error, "#{lockfile_name} missing!" unless lockfile_path.exist?
end
def check_consistent
raise Error, "#{specfile_name} and #{lockfile_name} are out of sync!" unless spec_consistent_with_lock?
end
def perform_installation
manifests = sorted_manifests
create_install_path
install_manifests(manifests)
end
def create_install_path
install_path.rmtree if install_path.exist? && destructive?
install_path.mkpath
end
def install_manifests(manifests)
manifests.each do |manifest|
manifest.install!
end
end
def sorted_manifests
ManifestSet.sort(lock.manifests)
end
def destructive?
environment.config_db.local['destructive'] == 'true'
end
def specfile_name
environment.specfile_name
end
def specfile_path
environment.specfile_path
end
def lockfile_name
environment.lockfile_name
end
def lockfile_path
environment.lockfile_path
end
def spec
environment.spec
end
def lock
environment.lock
end
def spec_change_set(spec, lock)
SpecChangeSet.new(environment, spec, lock)
end
def spec_consistent_with_lock?
spec_change_set(spec, lock).same?
end
def install_path
environment.install_path
end
end
end
end
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