Differential D18783 Diff 51025 usr/lib/neon_update/kf5_snap.rb

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usr/lib/neon_update/kf5_snap.rb

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Property	Old Value	New Value
File Mode	null	100755

		1		#!/usr/bin/env ruby
		2		# frozen_string_literal: true
		3		#
		4		# Copyright (C) 2019 Harald Sitter <sitter@kde.org>
		5		#
		6		# This program is free software; you can redistribute it and/or
		7		# modify it under the terms of the GNU General Public License as
		8		# published by the Free Software Foundation; either version 3 of
		9		# the License or any later version accepted by the membership of
		10		# KDE e.V. (or its successor approved by the membership of KDE
		11		# e.V.), which shall act as a proxy defined in Section 14 of
		12		# version 3 of the license.
		13		#
		14		# This program is distributed in the hope that it will be useful,
		15		# but WITHOUT ANY WARRANTY; without even the implied warranty of
		16		# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		17		# GNU General Public License for more details.
		18		#
		19		# You should have received a copy of the GNU General Public License
		20		# along with this program. If not, see <http://www.gnu.org/licenses/>.
		21
		22		require 'json'
		23		require 'net/http'
		24		require 'socket'
		25
		26		SOCKET_PATH = '/run/snapd.socket'
		27
		28		class APIResponse
		29		attr_reader :type
		30		attr_reader :status_code
		31		attr_reader :status
		32		attr_reader :result
		33
		34		def initialize(json)
		35		@type = json.fetch('type')
		36		@status_code = json.fetch('status-code')
		37		@status = json.fetch('status')
		38		@result = json.fetch('result')
		39		end
		40		end
		41
		42		class Connection
		43		def initialize
		44		@socket = Net::BufferedIO.new(UNIXSocket.new(SOCKET_PATH))
		45		end
		46
		47		# @return returns the (not-parsed) json reply obj
		48		def get(path)
		49		request = Net::HTTP::Get.new(path)
		50		request['host'] = 'localhost'
		51		request.exec(@socket, '1.1', path)
		52
		53		response = nil
		54		loop do
		55		response = Net::HTTPResponse.read_new(@socket)
		56		break unless response.is_a?(Net::HTTPContinue)
		57		end
		58		response.reading_body(@socket, request.response_body_permitted?) {}
		59
		60		yield response if block_given?
		61
		62		response
		63		end
		64		end
		65
		66		unless File.exist?(SOCKET_PATH)
		67		warn 'snapd not running ➜ no clean-up of kde-frameworks-5 snap'
		68		exit 0
		69		end
		70
		71		# Get a list of all slot interfaces of kf5 and record snaps connected to it.
		72		# If none are connected that means the snap is unused and can be thrown out
		73		# under the assumption that the reason it is installed is because it was seeded
		74		# on the ISO.
		75		kf5_used_by = []
		76		Connection.new.get('/v2/interfaces') do \|response\|
		77		response = JSON.parse(response.body)
		78		response = APIResponse.new(response)
		79
		80		slots = response.result.fetch('slots')
		81		kf5_slots = slots.find_all { \|x\| x.fetch('snap') == 'kde-frameworks-5' }
		82
		83		if kf5_slots.empty?
		84		puts 'kde-frameworks-5 snap not installed; nothing to clean up.'
		85		exit 0
		86		end
		87
		88		kf5_slots.each do \|slot\|
		89		connections = slot&.fetch('connections', [])
		90		kf5_used_by += connections.collect { \|x\| x.fetch('snap') }
		91		end
		92		end
		93
		94		if kf5_used_by.empty?
		95		puts 'kde-frameworks-5 snap used by nothing ➜ scheduling removal'
		96		system('snap remove --no-wait kde-frameworks-5')
		97		else
		98		puts "kde-frameworks-5 snap used by #{kf5_used_by} ➜ leaving it installed"
		99		end