124 lines
4.8 KiB
Python
124 lines
4.8 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
import json
|
|
import os
|
|
import subprocess
|
|
import sys
|
|
|
|
from lxcmgr.paths import LXC_STORAGE_DIR
|
|
from lxcmgr.pkgmgr import PkgMgr
|
|
|
|
from . import crypto
|
|
from .builder import ImageNotFoundError
|
|
from .paths import PRIVATE_KEY, REPO_APPS_DIR, REPO_IMAGES_DIR, REPO_META_FILE, REPO_SIG_FILE
|
|
|
|
class PackageExistsError(Exception):
|
|
pass
|
|
|
|
class Packer:
|
|
def __init__(self):
|
|
self.app = None
|
|
self.image = None
|
|
self.tar_path = None
|
|
self.tar_size = 0
|
|
self.xz_path = None
|
|
self.xz_size = 0
|
|
if os.path.exists(REPO_META_FILE):
|
|
with open(REPO_META_FILE, 'r') as f:
|
|
self.packages = json.load(f)
|
|
else:
|
|
self.packages = {'apps': {}, 'images': {}}
|
|
|
|
def save_repo_meta(self):
|
|
with open(REPO_META_FILE, 'w') as f:
|
|
json.dump(self.packages, f, sort_keys=True, indent=4)
|
|
|
|
def pack_image(self, image, force):
|
|
self.image = image
|
|
# Prepare package file names
|
|
self.tar_path = os.path.join(REPO_IMAGES_DIR, '{}.tar'.format(self.image.name))
|
|
self.xz_path = '{}.xz'.format(self.tar_path)
|
|
if force:
|
|
self.unregister_image()
|
|
try:
|
|
os.unlink(self.xz_path)
|
|
except FileNotFoundError:
|
|
pass
|
|
elif os.path.exists(self.xz_path):
|
|
raise PackageExistsError(self.xz_path)
|
|
self.create_image_archive()
|
|
self.register_image()
|
|
self.sign_packages()
|
|
|
|
def create_image_archive(self):
|
|
# Create archive
|
|
print('Archiving', self.image.path)
|
|
subprocess.run(['tar', '--xattrs', '-cpf', self.tar_path, self.image.name], cwd=LXC_STORAGE_DIR)
|
|
self.compress_archive()
|
|
|
|
def compress_archive(self):
|
|
# Compress the tarball with xz (LZMA2)
|
|
self.tar_size = os.path.getsize(self.tar_path)
|
|
print('Compressing', self.tar_path, '({:.2f} MB)'.format(self.tar_size/1048576))
|
|
subprocess.run(['xz', '-9', self.tar_path])
|
|
self.xz_size = os.path.getsize(self.xz_path)
|
|
print('Compressed ', self.xz_path, '({:.2f} MB)'.format(self.xz_size/1048576))
|
|
|
|
def register_image(self):
|
|
# Register image in global repository metadata file
|
|
print('Registering package {}'.format(self.image.name))
|
|
self.packages['images'][self.image.name] = self.image.conf.copy()
|
|
self.packages['images'][self.image.name]['size'] = self.tar_size
|
|
self.packages['images'][self.image.name]['pkgsize'] = self.xz_size
|
|
self.packages['images'][self.image.name]['sha512'] = crypto.hash_file(self.xz_path)
|
|
self.save_repo_meta()
|
|
# Register the image also to locally installed images for package manager
|
|
pm = PkgMgr()
|
|
pm.register_image(self.image.name, self.packages['images'][self.image.name])
|
|
|
|
def sign_packages(self):
|
|
signature = crypto.sign_file(PRIVATE_KEY, REPO_META_FILE)
|
|
with open(REPO_SIG_FILE, 'wb') as f:
|
|
f.write(signature)
|
|
|
|
def unregister_image(self):
|
|
# Removes package from global repository metadata file
|
|
if self.image.name in self.packages['images']:
|
|
del self.packages['images'][self.image.name]
|
|
self.save_repo_meta()
|
|
|
|
def pack_app(self, app):
|
|
self.app = app
|
|
# Check if all images exist
|
|
for container in app.conf['containers']:
|
|
image = app.conf['containers'][container]['image']
|
|
if image not in self.packages['images']:
|
|
raise ImageNotFoundError(image)
|
|
# Prepare package file names
|
|
self.tar_path = os.path.join(REPO_APPS_DIR, '{}.tar'.format(self.app.name))
|
|
self.xz_path = '{}.xz'.format(self.tar_path)
|
|
try:
|
|
os.unlink(self.xz_path)
|
|
except FileNotFoundError:
|
|
pass
|
|
self.create_app_archive()
|
|
self.register_app()
|
|
self.sign_packages()
|
|
|
|
def create_app_archive(self):
|
|
# Create archive with application setup scripts
|
|
print('Archiving setup scripts for', self.app.name)
|
|
scripts = ('install', 'install.sh', 'upgrade', 'upgrade.sh', 'uninstall', 'uninstall.sh')
|
|
scripts = [s for s in scripts if os.path.exists(os.path.join(self.app.build_dir, s))]
|
|
subprocess.run(['tar', '--xattrs', '-cpf', self.tar_path, '--transform', 's,^,{}/,'.format(self.app.name)] + scripts, cwd=self.app.build_dir)
|
|
self.compress_archive()
|
|
|
|
def register_app(self):
|
|
# Register package in global repository metadata file
|
|
print('Registering package {}'.format(self.app.name))
|
|
self.packages['apps'][self.app.name] = self.app.conf.copy()
|
|
self.packages['apps'][self.app.name]['size'] = self.tar_size
|
|
self.packages['apps'][self.app.name]['pkgsize'] = self.xz_size
|
|
self.packages['apps'][self.app.name]['sha512'] = crypto.hash_file(self.xz_path)
|
|
self.save_repo_meta()
|