David Kupka
6716aaedc8
Do not open/close the file with every access to plugins. Extensive access to filesystem may cause significant slowdown. https://fedorahosted.org/freeipa/ticket/6048 Reviewed-By: Jan Cholasta <jcholast@redhat.com>
102 lines
2.6 KiB
Python
102 lines
2.6 KiB
Python
#
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# Copyright (C) 2016 FreeIPA Contributors see COPYING for license
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#
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import collections
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import errno
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import json
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import os
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from . import compat
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from . import schema
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from ipaclient.plugins.rpcclient import rpcclient
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from ipaplatform.paths import paths
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from ipapython.dnsutil import DNSName
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from ipapython.ipa_log_manager import log_mgr
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logger = log_mgr.get_logger(__name__)
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class ServerInfo(collections.MutableMapping):
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_DIR = os.path.join(paths.USER_CACHE_PATH, 'ipa', 'servers')
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def __init__(self, api):
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hostname = DNSName(api.env.server).ToASCII()
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self._path = os.path.join(self._DIR, hostname)
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self._dict = {}
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self._dirty = False
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self._read()
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def __enter__(self):
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return self
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def __exit__(self, *_exc_info):
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self.flush()
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def flush(self):
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if self._dirty:
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self._write()
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def _read(self):
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try:
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with open(self._path, 'r') as sc:
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self._dict = json.load(sc)
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except EnvironmentError as e:
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if e.errno != errno.ENOENT:
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logger.warning('Failed to read server info: {}'.format(e))
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def _write(self):
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try:
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try:
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os.makedirs(self._DIR)
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except EnvironmentError as e:
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if e.errno != errno.EEXIST:
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raise
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with open(self._path, 'w') as sc:
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json.dump(self._dict, sc)
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except EnvironmentError as e:
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logger.warning('Failed to write server info: {}'.format(e))
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def __getitem__(self, key):
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return self._dict[key]
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def __setitem__(self, key, value):
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if key not in self._dict or self._dict[key] != value:
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self._dirty = True
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self._dict[key] = value
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def __delitem__(self, key):
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del self._dict[key]
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self._dirty = True
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def __iter__(self):
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return iter(self._dict)
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def __len__(self):
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return len(self._dict)
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def get_package(api):
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if api.env.in_tree:
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from ipaserver import plugins
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else:
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client = rpcclient(api)
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client.finalize()
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try:
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server_info = api._server_info
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except AttributeError:
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server_info = api._server_info = ServerInfo(api)
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try:
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plugins = schema.get_package(api, server_info, client)
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except schema.NotAvailable:
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plugins = compat.get_package(api, server_info, client)
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finally:
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server_info.flush()
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if client.isconnected():
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client.disconnect()
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return plugins
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