/
installer.py
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/
installer.py
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# -*- coding: utf-8 -*-
from __future__ import (absolute_import, division, print_function,
unicode_literals)
import importlib
import os
import shutil
import subprocess
import tempfile
import threading
import zipfile
from io import BytesIO
from sys import executable, exit
from threading import Timer
import pkg_resources
import requests
from django.conf import settings
from django.db import transaction
from django.db.models import Max
from future import standard_library
from cartoview.apps_handler.config import CartoviewApp
from cartoview.log_handler import get_logger
from cartoview.store_api.api import StoreAppResource, StoreAppVersion
from .decorators import restart_enabled, rollback_on_failure
from .exceptions import AppAlreadyInstalledException
from .models import App, AppStore, AppType
from ..apps_handler.req_installer import (ReqFileException,
ReqFilePermissionException,
ReqInstaller)
logger = get_logger(__name__)
install_app_batch = getattr(settings, 'INSTALL_APP_BAT', None)
standard_library.install_aliases()
reload(pkg_resources)
lock = threading.RLock()
class RestartHelper(object):
@classmethod
def django_reload(cls):
try:
from django.utils.autoreload import restart_with_reloader
restart_with_reloader()
from .utils import populate_apps
populate_apps()
except Exception as e:
logger.error(e.message)
@classmethod
def restart_script(cls):
# log_file = os.path.join(working_dir, "install_app_log.txt")
if install_app_batch and os.path.exists(install_app_batch):
working_dir = os.path.dirname(install_app_batch)
# with open(log_file, 'a') as log:
proc = subprocess.Popen(
install_app_batch, shell=True, cwd=working_dir)
logger.warning(proc.stdout)
logger.error(proc.stderr)
@classmethod
@restart_enabled
def restart_server(cls):
cls.django_reload()
cls.restart_script()
cls.cherry_restart()
@classmethod
def cherry_restart(cls):
try:
import cherrypy
# completely stop the cherrypy server instead of reloading
# to avoid waiting to stop used threads error
cherrypy.engine.stop()
cherrypy.engine.start()
except ImportError:
exit(0)
def remove_unwanted(info):
dictionary = info.__dict__.get('_data', {}) if info else {}
app_fields = [
str(field.name)
for field in sorted(App._meta.fields + App._meta.many_to_many)
]
app_fields.append("type")
clean_data = {
k: v
for k, v in dictionary.iteritems() if str(k) in app_fields
}
return clean_data
class AppJson(object):
def __init__(self, dictionary):
self.__dict__ = dictionary
def get_app_object(self, app):
obj_property = self.get_property_value
app.title = self.title
app.description = self.description
# TODO:remove short_description
app.short_description = self.description
app.owner_url = obj_property('owner_url')
app.help_url = obj_property('help_url')
app.author = obj_property('author')
app.author_website = obj_property('author_website')
app.home_page = obj_property('demo_url')
for category in self.type:
category, created = AppType.objects.get_or_create(name=category)
app.category.add(category)
app.status = obj_property('status')
app.tags.clear()
app.tags.add(*obj_property('tags'))
app.license = self.license.get('name', None) if self.license else None
app.single_instance = obj_property('single_instance')
return app
def get_property_value(self, p):
return getattr(self, p, None)
class AppInstaller(object):
def __init__(self, name, store_id=None, version=None, user=None):
self.user = user
self.app_dir = os.path.join(settings.APPS_DIR, name)
self.name = name
self.get_store(store_id)
self.info = None
self.get_info()
self.version = version
self.get_app_version()
self.app_serializer = AppJson(remove_unwanted(self.info))
def get_store(self, store_id=None):
if store_id:
self.store = AppStore.objects.get(id=store_id)
else:
self.store = AppStore.objects.get(is_default=True)
def get_app_version(self):
if not self.version or self.version == 'latest' or \
(self.info and self.info.latest_version.version == self.version):
self.version = self.info.latest_version
else:
data = self._request_rest_data("appversion/?app__name=", self.name,
"&version=", self.version)
if "objects" in data and len(data.get("objects", [])) > 0:
# TODO: handle if we can't get app version
versions = data.get("objects", [])
api_obj = StoreAppVersion()
bundle = api_obj.build_bundle(data=versions[0])
version = api_obj.obj_get(bundle)
self.version = version
else:
self.version = None
def get_info(self):
data = self._request_rest_data("app/?name=", self.name)
if "objects" in data and len(data.get("objects", [])) > 0:
apps_list = data.get("objects", [])
api_obj = StoreAppResource()
for app in apps_list:
bundle = api_obj.build_bundle(data=app)
app_obj = api_obj.obj_get(bundle)
self.info = app_obj
break
def _request_rest_data(self, *args):
"""
get app information form app store rest url
"""
q = requests.get(self.store.url + ''.join([str(item)
for item in args]))
return q.json()
@rollback_on_failure
def extract_move_app(self, zipped_app):
extract_to = tempfile.mkdtemp()
libs_dir = None
zipped_app.extractall(extract_to)
if self.upgrade and os.path.exists(self.app_dir):
# move old version to temporary dir so that we can restore in
# case of failure
old_version_temp_dir = tempfile.mkdtemp()
shutil.move(self.app_dir, old_version_temp_dir)
old_lib_dir = os.path.join(old_version_temp_dir, 'libs')
if os.path.isdir(old_lib_dir) and os.path.exists(old_lib_dir):
libs_dir = old_lib_dir
self.new_app_dir = os.path.join(extract_to, self.name)
shutil.move(self.new_app_dir, settings.APPS_DIR)
if libs_dir:
shutil.copy(libs_dir, self.app_dir)
# delete temp extract dir
shutil.rmtree(extract_to)
def _download_app(self):
response = requests.get(self.version.download_link, stream=True)
zip_ref = zipfile.ZipFile(BytesIO(response.content))
try:
self.extract_move_app(zip_ref)
except shutil.Error as e:
logger.error(e.message)
raise e
finally:
zip_ref.close()
@rollback_on_failure
def get_app_order(self):
apps = App.objects.all()
max_value = apps.aggregate(
Max('order'))['order__max'] if apps.exists() else 0
return max_value + 1
@rollback_on_failure
def add_carto_app(self):
if not CartoviewApp.objects.app_exists(self.name):
CartoviewApp({
'name': self.name,
'active': True,
'order': self.get_app_order(),
'pending': True
})
CartoviewApp.save()
else:
carto_app = CartoviewApp.objects.get(self.name)
carto_app.pending = True
carto_app.commit()
CartoviewApp.save()
@rollback_on_failure
def add_app(self):
# save app configuration
app, created = App.objects.get_or_create(name=self.name)
if created:
if app.order is None or app.order == 0:
app.order = self.get_app_order()
self.add_carto_app()
app = self.app_serializer.get_app_object(app)
app.version = self.version.version
app.installed_by = self.user
app.store = AppStore.objects.filter(is_default=True).first()
app.save()
return app
def _rollback(self):
app = CartoviewApp.objects.pop(self.name, None)
if app:
CartoviewApp.save()
self.delete_app_dir()
def install(self, restart=True):
with lock:
self.upgrade = False
if os.path.exists(self.app_dir):
try:
installed_app = App.objects.get(name=self.name)
if installed_app.version < self.version.version:
self.upgrade = True
else:
raise AppAlreadyInstalledException()
except App.DoesNotExist:
# NOTE:the following code handle if app downloaded and for
# some reason not added to the portal
self._rollback()
installed_apps = []
for name, version in list(self.version.dependencies.items()):
# use try except because AppInstaller.__init__ will handle
# upgrade if version not match
try:
app_installer = AppInstaller(
name, self.store.id, version, user=self.user)
installed_apps += app_installer.install(restart=False)
except AppAlreadyInstalledException as e:
logger.error(e.message)
self._download_app()
reload(pkg_resources)
self.check_then_finlize(restart, installed_apps)
return installed_apps
@rollback_on_failure
def _install_requirements(self):
try:
libs_dir = os.path.join(self.app_dir, 'libs')
req_installer = ReqInstaller(self.app_dir, target=libs_dir)
req_installer.install_all()
except BaseException as e:
if not (isinstance(e, ReqFileException)
or isinstance(e, ReqFilePermissionException)): # noqa
raise e
@rollback_on_failure
def check_then_finlize(self, restart, installed_apps):
with transaction.atomic():
new_app = self.add_app()
installed_apps.append(new_app)
self._install_requirements()
if restart:
timer = Timer(0.1, RestartHelper.restart_server)
timer.start()
def delete_app(self):
try:
app = App.objects.get(name=self.name)
app.delete()
except App.DoesNotExist:
pass
def delete_app_dir(self):
if os.path.exists(self.app_dir):
shutil.rmtree(self.app_dir)
def completely_remove(self):
self.delete_app()
self.delete_app_tables()
self.delete_app_dir()
CartoviewApp.objects.pop(self.name, None)
CartoviewApp.save()
def execute_command(self, command):
project_dir = None
if hasattr(settings, 'BASE_DIR'):
project_dir = settings.BASE_DIR
elif hasattr(settings, 'PROJECT_ROOT'):
project_dir = settings.PROJECT_ROOT
elif hasattr(settings, 'APP_ROOT'):
project_dir = settings.APP_ROOT
manage_py = os.path.join(project_dir, 'manage.py')
process = subprocess.Popen(
"{} {} {}".format(executable, manage_py, command), shell=True)
out, err = process.communicate()
logger.info(out)
logger.error(err)
def delete_app_tables(self):
from django.contrib.contenttypes.models import ContentType
ContentType.objects.filter(app_label=self.name).delete()
self.execute_command("migrate {} zero".format(self.name))
def uninstall(self, restart=True):
"""
angular.forEach(app.store.installedApps.objects,
function(installedApp{
var currentApp = appsHash[installedApp.name];
if(dependents.indexOf(currentApp) == -1 &&
currentApp.latest_version.dependencies[app.name]){
dependents.push(currentApp)
_getDependents(currentApp, appsHash, dependents)
}
});
:return:
"""
with lock:
uninstalled = False
installed_apps = App.objects.all()
for app in installed_apps:
app_installer = AppInstaller(
app.name, self.store.id, app.version, user=self.user)
dependencies = app_installer.version.dependencies \
if app_installer.version else {}
if self.name in dependencies.keys():
app_installer.uninstall(restart=False)
try:
installer = importlib.import_module('%s.installer' % self.name)
installer.uninstall()
except ImportError as e:
logger.error(e.message)
self.completely_remove()
uninstalled = True
if restart:
RestartHelper.restart_server()
return uninstalled