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# Copyright (C) 2017-2020 RhodeCode GmbH
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License, version 3
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# (only), as published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# This program is dual-licensed. If you wish to learn more about the
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# RhodeCode Enterprise Edition, including its added features, Support services,
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# and proprietary license terms, please see https://rhodecode.com/licenses/
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import os
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import re
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import time
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import datetime
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import dateutil
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import pickle
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from rhodecode.model.db import DbSession, Session
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class CleanupCommand(Exception):
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pass
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class BaseAuthSessions(object):
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SESSION_TYPE = None
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NOT_AVAILABLE = 'NOT AVAILABLE'
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def __init__(self, config):
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session_conf = {}
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for k, v in config.items():
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if k.startswith('beaker.session'):
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session_conf[k] = v
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self.config = session_conf
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def get_count(self):
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raise NotImplementedError
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def get_expired_count(self, older_than_seconds=None):
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raise NotImplementedError
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def clean_sessions(self, older_than_seconds=None):
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raise NotImplementedError
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def _seconds_to_date(self, seconds):
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return datetime.datetime.utcnow() - dateutil.relativedelta.relativedelta(
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seconds=seconds)
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class DbAuthSessions(BaseAuthSessions):
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SESSION_TYPE = 'ext:database'
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def get_count(self):
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return DbSession.query().count()
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def get_expired_count(self, older_than_seconds=None):
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expiry_date = self._seconds_to_date(older_than_seconds)
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return DbSession.query().filter(DbSession.accessed < expiry_date).count()
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def clean_sessions(self, older_than_seconds=None):
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expiry_date = self._seconds_to_date(older_than_seconds)
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to_remove = DbSession.query().filter(DbSession.accessed < expiry_date).count()
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DbSession.query().filter(DbSession.accessed < expiry_date).delete()
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Session().commit()
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return to_remove
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class FileAuthSessions(BaseAuthSessions):
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SESSION_TYPE = 'file sessions'
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def _get_sessions_dir(self):
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data_dir = self.config.get('beaker.session.data_dir')
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return data_dir
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def _count_on_filesystem(self, path, older_than=0, callback=None):
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value = dict(percent=0, used=0, total=0, items=0, callbacks=0,
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path=path, text='')
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items_count = 0
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used = 0
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callbacks = 0
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cur_time = time.time()
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for root, dirs, files in os.walk(path):
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for f in files:
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final_path = os.path.join(root, f)
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try:
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mtime = os.stat(final_path).st_mtime
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if (cur_time - mtime) > older_than:
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items_count += 1
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if callback:
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callback_res = callback(final_path)
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callbacks += 1
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else:
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used += os.path.getsize(final_path)
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except OSError:
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pass
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value.update({
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'percent': 100,
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'used': used,
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'total': used,
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'items': items_count,
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'callbacks': callbacks
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})
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return value
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def get_count(self):
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try:
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sessions_dir = self._get_sessions_dir()
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items_count = self._count_on_filesystem(sessions_dir)['items']
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except Exception:
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items_count = self.NOT_AVAILABLE
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return items_count
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def get_expired_count(self, older_than_seconds=0):
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try:
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sessions_dir = self._get_sessions_dir()
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items_count = self._count_on_filesystem(
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sessions_dir, older_than=older_than_seconds)['items']
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except Exception:
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items_count = self.NOT_AVAILABLE
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return items_count
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def clean_sessions(self, older_than_seconds=0):
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# find . -mtime +60 -exec rm {} \;
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sessions_dir = self._get_sessions_dir()
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def remove_item(path):
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os.remove(path)
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stats = self._count_on_filesystem(
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sessions_dir, older_than=older_than_seconds,
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callback=remove_item)
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return stats['callbacks']
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class MemcachedAuthSessions(BaseAuthSessions):
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SESSION_TYPE = 'ext:memcached'
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_key_regex = re.compile(r'ITEM (.*_session) \[(.*); (.*)\]')
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def _get_client(self):
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import memcache
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client = memcache.Client([self.config.get('beaker.session.url')])
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return client
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def _get_telnet_client(self, host, port):
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import telnetlib
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client = telnetlib.Telnet(host, port, None)
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return client
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def _run_telnet_cmd(self, client, cmd):
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client.write("%s\n" % cmd)
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return client.read_until('END')
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def key_details(self, client, slab_ids, limit=100):
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""" Return a list of tuples containing keys and details """
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cmd = 'stats cachedump %s %s'
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for slab_id in slab_ids:
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for key in self._key_regex.finditer(
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self._run_telnet_cmd(client, cmd % (slab_id, limit))):
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yield key
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def get_count(self):
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client = self._get_client()
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count = self.NOT_AVAILABLE
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try:
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slabs = []
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for server, slabs_data in client.get_slabs():
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slabs.extend(list(slabs_data.keys()))
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host, port = client.servers[0].address
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telnet_client = self._get_telnet_client(host, port)
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keys = self.key_details(telnet_client, slabs)
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count = 0
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for _k in keys:
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count += 1
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except Exception:
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return count
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return count
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def get_expired_count(self, older_than_seconds=None):
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return self.NOT_AVAILABLE
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def clean_sessions(self, older_than_seconds=None):
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raise CleanupCommand('Cleanup for this session type not yet available')
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class RedisAuthSessions(BaseAuthSessions):
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SESSION_TYPE = 'ext:redis'
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def _get_client(self):
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import redis
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args = {
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'socket_timeout': 60,
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'url': self.config.get('beaker.session.url')
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}
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client = redis.StrictRedis.from_url(**args)
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return client
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def get_count(self):
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client = self._get_client()
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return len(client.keys('beaker_cache:*'))
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def get_expired_count(self, older_than_seconds=None):
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expiry_date = self._seconds_to_date(older_than_seconds)
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return self.NOT_AVAILABLE
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def clean_sessions(self, older_than_seconds=None):
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client = self._get_client()
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expiry_time = time.time() - older_than_seconds
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deleted_keys = 0
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for key in client.keys('beaker_cache:*'):
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data = client.get(key)
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if data:
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json_data = pickle.loads(data)
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try:
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accessed_time = json_data['_accessed_time']
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except KeyError:
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accessed_time = 0
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if accessed_time < expiry_time:
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client.delete(key)
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deleted_keys += 1
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return deleted_keys
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class MemoryAuthSessions(BaseAuthSessions):
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SESSION_TYPE = 'memory'
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def get_count(self):
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return self.NOT_AVAILABLE
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def get_expired_count(self, older_than_seconds=None):
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return self.NOT_AVAILABLE
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def clean_sessions(self, older_than_seconds=None):
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raise CleanupCommand('Cleanup for this session type not yet available')
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def get_session_handler(session_type):
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types = {
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'file': FileAuthSessions,
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'ext:memcached': MemcachedAuthSessions,
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'ext:redis': RedisAuthSessions,
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'ext:database': DbAuthSessions,
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'memory': MemoryAuthSessions
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}
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try:
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return types[session_type]
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except KeyError:
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raise ValueError(
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'This type {} is not supported'.format(session_type))
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