87 lines
2.7 KiB
Python
87 lines
2.7 KiB
Python
# standard imports
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import uuid
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import os
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import logging
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# external imports
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from shep.store.file import SimpleFileStoreFactory
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# local imports
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from chainsyncer.store import (
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SyncItem,
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SyncStore,
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)
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logg = logging.getLogger(__name__)
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class SyncFsStore(SyncStore):
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def __init__(self, base_path, session_id=None, state_event_callback=None, filter_state_event_callback=None):
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super(SyncFsStore, self).__init__(session_id=session_id)
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default_path = os.path.join(base_path, 'default')
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if session_id == None:
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self.session_path = os.path.realpath(default_path)
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self.is_default = True
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else:
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if session_id == 'default':
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self.is_default = True
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given_path = os.path.join(base_path, session_id)
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self.session_path = os.path.realpath(given_path)
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create_path = False
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try:
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os.stat(self.session_path)
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except FileNotFoundError:
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create_path = True
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if create_path:
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self.__create_path(base_path, default_path, session_id=session_id)
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self.session_id = os.path.basename(self.session_path)
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logg.info('session id {} resolved {} path {}'.format(session_id, self.session_id, self.session_path))
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base_sync_path = os.path.join(self.session_path, 'sync')
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factory = SimpleFileStoreFactory(base_sync_path, binary=True)
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self.setup_sync_state(factory, state_event_callback)
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base_filter_path = os.path.join(self.session_path, 'filter')
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factory = SimpleFileStoreFactory(base_filter_path, binary=True)
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self.setup_filter_state(factory, filter_state_event_callback)
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def __create_path(self, base_path, default_path, session_id=None):
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logg.debug('fs store path {} does not exist, creating'.format(self.session_path))
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if session_id == None:
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session_id = str(uuid.uuid4())
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self.session_path = os.path.join(base_path, session_id)
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os.makedirs(self.session_path)
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if self.is_default:
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try:
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os.symlink(self.session_path, default_path)
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except FileExistsError:
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pass
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def get_target(self):
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fp = os.path.join(self.session_path, 'target')
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try:
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f = open(fp, 'r')
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v = f.read()
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f.close()
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self.target = int(v)
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except FileNotFoundError as e:
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logg.debug('cant find target {} {}'.format(fp, e))
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pass
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def set_target(self, v):
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fp = os.path.join(self.session_path, 'target')
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f = open(fp, 'w')
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f.write(str(v))
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f.close()
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self.target = v
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