81 lines
3.7 KiB
Python
81 lines
3.7 KiB
Python
|
import collections
|
||
|
|
from threading import current_thread, enumerate as threadingEnumerate, RLock
|
||
|
|
import Queue
|
||
|
|
import time
|
||
|
|
|
||
|
|
from helper_sql import *
|
||
|
|
from storage import InventoryStorage, InventoryItem
|
||
|
|
|
||
|
|
class SqliteInventory(InventoryStorage):
|
||
|
|
def __init__(self):
|
||
|
|
super(self.__class__, self).__init__()
|
||
|
|
self._inventory = {} #of objects (like msg payloads and pubkey payloads) Does not include protocol headers (the first 24 bytes of each packet).
|
||
|
|
self._streams = collections.defaultdict(set) # key = streamNumer, value = a set which holds the inventory object hashes that we are aware of. This is used whenever we receive an inv message from a peer to check to see what items are new to us. We don't delete things out of it; instead, the singleCleaner thread clears and refills it every couple hours.
|
||
|
|
self.lock = RLock() # Guarantees that two receiveDataThreads don't receive and process the same message concurrently (probably sent by a malicious individual)
|
||
|
|
|
||
|
|
def __contains__(self, hash):
|
||
|
|
with self.lock:
|
||
|
|
if hash in self._inventory:
|
||
|
|
return True
|
||
|
|
return bool(sqlQuery('SELECT 1 FROM inventory WHERE hash=?', hash))
|
||
|
|
|
||
|
|
def __getitem__(self, hash):
|
||
|
|
with self.lock:
|
||
|
|
if hash in self._inventory:
|
||
|
|
return self._inventory[hash]
|
||
|
|
rows = sqlQuery('SELECT objecttype, streamnumber, payload, expirestime, tag FROM inventory WHERE hash=?', hash)
|
||
|
|
if not rows:
|
||
|
|
raise KeyError(hash)
|
||
|
|
return InventoryItem(*rows[0])
|
||
|
|
|
||
|
|
def __setitem__(self, hash, value):
|
||
|
|
with self.lock:
|
||
|
|
value = InventoryItem(*value)
|
||
|
|
self._inventory[hash] = value
|
||
|
|
self._streams[value.stream].add(hash)
|
||
|
|
|
||
|
|
def __delitem__(self, hash):
|
||
|
|
raise NotImplementedError
|
||
|
|
|
||
|
|
def __iter__(self):
|
||
|
|
with self.lock:
|
||
|
|
hashes = self._inventory.keys()[:]
|
||
|
|
hashes += (x for x, in sqlQuery('SELECT hash FROM inventory'))
|
||
|
|
return hashes.__iter__()
|
||
|
|
|
||
|
|
def __len__(self):
|
||
|
|
with self.lock:
|
||
|
|
return len(self._inventory) + sqlQuery('SELECT count(*) FROM inventory')[0][0]
|
||
|
|
|
||
|
|
def by_type_and_tag(self, type, tag):
|
||
|
|
with self.lock:
|
||
|
|
values = [value for value in self._inventory.values() if value.type == type and value.tag == tag]
|
||
|
|
values += (InventoryItem(*value) for value in sqlQuery('SELECT objecttype, streamnumber, payload, expirestime, tag FROM inventory WHERE objecttype=? AND tag=?', type, tag))
|
||
|
|
return values
|
||
|
|
|
||
|
|
def hashes_by_stream(self, stream):
|
||
|
|
with self.lock:
|
||
|
|
return self._streams[stream]
|
||
|
|
|
||
|
|
def unexpired_hashes_by_stream(self, stream):
|
||
|
|
with self.lock:
|
||
|
|
t = int(time.time())
|
||
|
|
hashes = [x for x, value in self._inventory.items() if value.stream == stream and value.expires > t]
|
||
|
|
hashes += (payload for payload, in sqlQuery('SELECT hash FROM inventory WHERE streamnumber=? AND expirestime>?', stream, t))
|
||
|
|
return hashes
|
||
|
|
|
||
|
|
def flush(self):
|
||
|
|
with self.lock: # If you use both the inventoryLock and the sqlLock, always use the inventoryLock OUTSIDE of the sqlLock.
|
||
|
|
with SqlBulkExecute() as sql:
|
||
|
|
for objectHash, value in self._inventory.items():
|
||
|
|
sql.execute('INSERT INTO inventory VALUES (?, ?, ?, ?, ?, ?)', objectHash, *value)
|
||
|
|
self._inventory.clear()
|
||
|
|
|
||
|
|
def clean(self):
|
||
|
|
with self.lock:
|
||
|
|
sqlExecute('DELETE FROM inventory WHERE expirestime<?',int(time.time()) - (60 * 60 * 3))
|
||
|
|
self._streams.clear()
|
||
|
|
for objectHash, value in self.items():
|
||
|
|
self._streams[value.stream].add(objectHash)
|
||
|
|
|