mirror of
https://github.com/valitydev/salt.git
synced 2024-11-08 17:33:54 +00:00
Merge pull request #20481 from jacksontj/loader
Add submodule support to LazyLoader
This commit is contained in:
Mike Place
commit
f122c9f6ba
@ -710,6 +710,7 @@ class LazyLoader(salt.utils.lazy.LazyDict):
|
||||
|
||||
self.whitelist = whitelist
|
||||
self.virtual_enable = virtual_enable
|
||||
self.initial_load = True
|
||||
|
||||
# names of modules that we don't have (errors, __virtual__, etc.)
|
||||
self.missing_modules = []
|
||||
@ -745,6 +746,8 @@ class LazyLoader(salt.utils.lazy.LazyDict):
|
||||
except ImportError:
|
||||
log.info('Cython is enabled in the options but not present '
|
||||
'in the system path. Skipping Cython modules.')
|
||||
# allow for module dirs
|
||||
self.suffix_map[''] = ('', '', imp.PKG_DIRECTORY)
|
||||
|
||||
# create mapping of filename (without suffix) to (path, suffix)
|
||||
self.file_mapping = {}
|
||||
@ -768,8 +771,21 @@ class LazyLoader(salt.utils.lazy.LazyDict):
|
||||
)
|
||||
continue
|
||||
fpath = os.path.join(mod_dir, filename)
|
||||
# if its a directory, lets allow us to load that
|
||||
if ext == '':
|
||||
# is there something __init__?
|
||||
subfiles = os.listdir(fpath)
|
||||
sub_path = None
|
||||
for suffix in suffix_order:
|
||||
init_file = '__init__{0}'.format(suffix)
|
||||
if init_file in subfiles:
|
||||
sub_path = os.path.join(fpath, init_file)
|
||||
break
|
||||
if sub_path is not None:
|
||||
self.file_mapping[f_noext] = (fpath, ext)
|
||||
|
||||
# if we don't have it, we want it
|
||||
if f_noext not in self.file_mapping:
|
||||
elif f_noext not in self.file_mapping:
|
||||
self.file_mapping[f_noext] = (fpath, ext)
|
||||
# if we do, we want it if we have a higher precidence ext
|
||||
else:
|
||||
@ -790,6 +806,7 @@ class LazyLoader(salt.utils.lazy.LazyDict):
|
||||
# we obviously want a re-do
|
||||
if hasattr(self, 'opts'):
|
||||
self.refresh_file_mapping()
|
||||
self.initial_load = False
|
||||
|
||||
def __prep_mod_opts(self, opts):
|
||||
'''
|
||||
@ -853,6 +870,19 @@ class LazyLoader(salt.utils.lazy.LazyDict):
|
||||
if mod_name not in k:
|
||||
yield k
|
||||
|
||||
def _reload_submodules(self, mod):
|
||||
submodules = (
|
||||
getattr(mod, sname) for sname in dir(mod) if
|
||||
isinstance(getattr(mod, sname), mod.__class__)
|
||||
)
|
||||
|
||||
# reload only custom "sub"modules
|
||||
for submodule in submodules:
|
||||
# it is a submodule if the name is in a namespace under mod
|
||||
if submodule.__name__.startswith(mod.__name__ + '.'):
|
||||
reload(submodule)
|
||||
self._reload_submodules(submodule)
|
||||
|
||||
def _load_module(self, name):
|
||||
mod = None
|
||||
fpath, suffix = self.file_mapping[name]
|
||||
@ -862,6 +892,19 @@ class LazyLoader(salt.utils.lazy.LazyDict):
|
||||
mod = self.pyximport.load_module(name, fpath, tempfile.gettempdir())
|
||||
else:
|
||||
desc = self.suffix_map[suffix]
|
||||
# if it is a directory, we dont open a file
|
||||
if suffix == '':
|
||||
mod = imp.load_module(
|
||||
'{0}.{1}.{2}.{3}'.format(
|
||||
self.loaded_base_name,
|
||||
self.mod_type_check(fpath),
|
||||
self.tag,
|
||||
name
|
||||
), None, fpath, desc)
|
||||
# reload all submodules if necessary
|
||||
if not self.initial_load:
|
||||
self._reload_submodules(mod)
|
||||
else:
|
||||
with open(fpath, desc[1]) as fn_:
|
||||
mod = imp.load_module(
|
||||
'{0}.{1}.{2}.{3}'.format(
|
||||
|
||||
@ -12,6 +12,7 @@ import inspect
|
||||
import tempfile
|
||||
import shutil
|
||||
import os
|
||||
import collections
|
||||
|
||||
# Import Salt Testing libs
|
||||
from salttesting import TestCase
|
||||
@ -279,3 +280,238 @@ class LazyLoaderReloadingTest(TestCase):
|
||||
self.assertEqual(self.loader[self.module_key](), self.count)
|
||||
self.loader.clear()
|
||||
self.assertNotIn(self.module_key, self.loader)
|
||||
|
||||
submodule_template = '''
|
||||
import lib
|
||||
|
||||
def test():
|
||||
return ({count}, lib.test())
|
||||
'''
|
||||
|
||||
submodule_lib_template = '''
|
||||
def test():
|
||||
return {count}
|
||||
'''
|
||||
|
||||
|
||||
class LazyLoaderSubmodReloadingTest(TestCase):
|
||||
'''
|
||||
Test the loader of salt with changing modules
|
||||
'''
|
||||
module_name = 'loadertestsubmod'
|
||||
module_key = 'loadertestsubmod.test'
|
||||
|
||||
def setUp(self):
|
||||
self.opts = _config = minion_config(None)
|
||||
self.tmp_dir = tempfile.mkdtemp(dir=integration.TMP)
|
||||
os.makedirs(self.module_dir)
|
||||
|
||||
self.count = 0
|
||||
self.lib_count = 0
|
||||
|
||||
dirs = _module_dirs(self.opts, 'modules', 'module')
|
||||
dirs.append(self.tmp_dir)
|
||||
self.loader = LazyLoader(dirs,
|
||||
self.opts,
|
||||
tag='module')
|
||||
|
||||
def tearDown(self):
|
||||
shutil.rmtree(self.tmp_dir)
|
||||
|
||||
def update_module(self):
|
||||
self.count += 1
|
||||
with open(self.module_path, 'wb') as fh:
|
||||
fh.write(submodule_template.format(count=self.count))
|
||||
fh.flush()
|
||||
os.fsync(fh.fileno()) # flush to disk
|
||||
|
||||
# pyc files don't like it when we change the original quickly
|
||||
# since the header bytes only contain the timestamp (granularity of seconds)
|
||||
# TODO: don't write them? Is *much* slower on re-load (~3x)
|
||||
# https://docs.python.org/2/library/sys.html#sys.dont_write_bytecode
|
||||
try:
|
||||
os.unlink(self.module_path + 'c')
|
||||
except OSError:
|
||||
pass
|
||||
|
||||
def rm_module(self):
|
||||
os.unlink(self.module_path)
|
||||
os.unlink(self.module_path + 'c')
|
||||
|
||||
def update_lib(self):
|
||||
self.lib_count += 1
|
||||
with open(self.lib_path, 'wb') as fh:
|
||||
fh.write(submodule_lib_template.format(count=self.lib_count))
|
||||
fh.flush()
|
||||
os.fsync(fh.fileno()) # flush to disk
|
||||
|
||||
# pyc files don't like it when we change the original quickly
|
||||
# since the header bytes only contain the timestamp (granularity of seconds)
|
||||
# TODO: don't write them? Is *much* slower on re-load (~3x)
|
||||
# https://docs.python.org/2/library/sys.html#sys.dont_write_bytecode
|
||||
try:
|
||||
os.unlink(self.lib_path + 'c')
|
||||
except OSError:
|
||||
pass
|
||||
|
||||
def rm_lib(self):
|
||||
os.unlink(self.lib_path)
|
||||
os.unlink(self.lib_path + 'c')
|
||||
|
||||
@property
|
||||
def module_dir(self):
|
||||
return os.path.join(self.tmp_dir, self.module_name)
|
||||
|
||||
@property
|
||||
def module_path(self):
|
||||
return os.path.join(self.module_dir, '__init__.py')
|
||||
|
||||
@property
|
||||
def lib_path(self):
|
||||
return os.path.join(self.module_dir, 'lib.py')
|
||||
|
||||
def test_basic(self):
|
||||
# ensure it doesn't exist
|
||||
self.assertNotIn(self.module_key, self.loader)
|
||||
|
||||
self.update_module()
|
||||
self.update_lib()
|
||||
self.loader.clear()
|
||||
self.assertIn(self.module_key, self.loader)
|
||||
|
||||
def test_reload(self):
|
||||
# ensure it doesn't exist
|
||||
self.assertNotIn(self.module_key, self.loader)
|
||||
|
||||
# update both the module and the lib
|
||||
for x in range(1, 3):
|
||||
self.update_module()
|
||||
self.update_lib()
|
||||
self.loader.clear()
|
||||
self.assertEqual(self.loader[self.module_key](), (self.count, self.lib_count))
|
||||
|
||||
# update just the module
|
||||
for x in range(1, 3):
|
||||
self.update_module()
|
||||
self.loader.clear()
|
||||
self.assertEqual(self.loader[self.module_key](), (self.count, self.lib_count))
|
||||
|
||||
# update just the lib
|
||||
for x in range(1, 3):
|
||||
self.update_lib()
|
||||
self.loader.clear()
|
||||
self.assertEqual(self.loader[self.module_key](), (self.count, self.lib_count))
|
||||
|
||||
self.rm_module()
|
||||
# make sure that even if we remove the module, its still loaded until a clear
|
||||
self.assertEqual(self.loader[self.module_key](), (self.count, self.lib_count))
|
||||
self.loader.clear()
|
||||
self.assertNotIn(self.module_key, self.loader)
|
||||
|
||||
def test_reload_missing_lib(self):
|
||||
# ensure it doesn't exist
|
||||
self.assertNotIn(self.module_key, self.loader)
|
||||
|
||||
# update both the module and the lib
|
||||
self.update_module()
|
||||
self.update_lib()
|
||||
self.loader.clear()
|
||||
self.assertEqual(self.loader[self.module_key](), (self.count, self.lib_count))
|
||||
|
||||
# remove the lib, this means we should fail to load the module next time
|
||||
self.rm_lib()
|
||||
self.loader.clear()
|
||||
self.assertNotIn(self.module_key, self.loader)
|
||||
|
||||
|
||||
deep_init_base = '''
|
||||
import top_lib
|
||||
import top_lib.mid_lib
|
||||
import top_lib.mid_lib.bot_lib
|
||||
|
||||
def top():
|
||||
return top_lib.test()
|
||||
|
||||
def mid():
|
||||
return top_lib.mid_lib.test()
|
||||
|
||||
def bot():
|
||||
return top_lib.mid_lib.bot_lib.test()
|
||||
'''
|
||||
|
||||
|
||||
class LazyLoaderDeepSubmodReloadingTest(TestCase):
|
||||
module_name = 'loadertestsubmoddeep'
|
||||
libs = ('top_lib', 'mid_lib', 'bot_lib')
|
||||
|
||||
def setUp(self):
|
||||
self.opts = _config = minion_config(None)
|
||||
self.tmp_dir = tempfile.mkdtemp(dir=integration.TMP)
|
||||
os.makedirs(self.module_dir)
|
||||
|
||||
self.lib_count = collections.defaultdict(int) # mapping of path -> count
|
||||
|
||||
# bootstrap libs
|
||||
with open(os.path.join(self.module_dir, '__init__.py'), 'w') as fh:
|
||||
fh.write(deep_init_base)
|
||||
fh.flush()
|
||||
os.fsync(fh.fileno()) # flush to disk
|
||||
|
||||
self.lib_paths = {}
|
||||
dir_path = self.module_dir
|
||||
for lib_name in self.libs:
|
||||
dir_path = os.path.join(dir_path, lib_name)
|
||||
self.lib_paths[lib_name] = dir_path
|
||||
os.makedirs(dir_path)
|
||||
self.update_lib(lib_name)
|
||||
|
||||
dirs = _module_dirs(self.opts, 'modules', 'module')
|
||||
dirs.append(self.tmp_dir)
|
||||
self.loader = LazyLoader(dirs,
|
||||
self.opts,
|
||||
tag='module')
|
||||
|
||||
@property
|
||||
def module_dir(self):
|
||||
return os.path.join(self.tmp_dir, self.module_name)
|
||||
|
||||
def update_lib(self, lib_name):
|
||||
path = os.path.join(self.lib_paths[lib_name], '__init__.py')
|
||||
self.lib_count[lib_name] += 1
|
||||
with open(path, 'wb') as fh:
|
||||
fh.write(submodule_lib_template.format(count=self.lib_count[lib_name]))
|
||||
fh.flush()
|
||||
os.fsync(fh.fileno()) # flush to disk
|
||||
|
||||
# pyc files don't like it when we change the original quickly
|
||||
# since the header bytes only contain the timestamp (granularity of seconds)
|
||||
# TODO: don't write them? Is *much* slower on re-load (~3x)
|
||||
# https://docs.python.org/2/library/sys.html#sys.dont_write_bytecode
|
||||
try:
|
||||
os.unlink(path + 'c')
|
||||
except OSError:
|
||||
pass
|
||||
|
||||
def tearDown(self):
|
||||
shutil.rmtree(self.tmp_dir)
|
||||
|
||||
def test_basic(self):
|
||||
self.assertIn('{0}.top'.format(self.module_name), self.loader)
|
||||
|
||||
def _verify_libs(self):
|
||||
for lib in self.libs:
|
||||
self.assertEqual(self.loader['{0}.{1}'.format(self.module_name, lib.replace('_lib', ''))](),
|
||||
self.lib_count[lib])
|
||||
|
||||
def test_reload(self):
|
||||
'''
|
||||
Make sure that we can reload all libraries of arbitrary depth
|
||||
'''
|
||||
self._verify_libs()
|
||||
|
||||
# update them all
|
||||
for lib in self.libs:
|
||||
for x in xrange(5):
|
||||
self.update_lib(lib)
|
||||
self.loader.clear()
|
||||
self._verify_libs()
|
||||
|
||||
Loading…
Reference in New Issue
Block a user