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Be more careful closing history DB

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Fixes #485
This commit is contained in:
Neil Booth 2018-06-02 15:56:58 +09:00
parent 7d9ffbbed0
commit 69754a62eb
1 changed files with 4 additions and 1 deletions
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5
server/history.py
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@ -30,6 +30,7 @@ class History(object):
self.max_hist_row_entries = 12500 self.max_hist_row_entries = 12500
self.unflushed = defaultdict(partial(array.array, 'I')) self.unflushed = defaultdict(partial(array.array, 'I'))
self.unflushed_count = 0 self.unflushed_count = 0
self.db = None
def open_db(self, db_class, for_sync, utxo_flush_count): def open_db(self, db_class, for_sync, utxo_flush_count):
self.db = db_class('hist', for_sync) self.db = db_class('hist', for_sync)
@ -38,7 +39,9 @@ class History(object):
return self.flush_count return self.flush_count
def close_db(self): def close_db(self):
self.db.close() if self.db:
self.db.close()
self.db = None
def read_state(self): def read_state(self):
state = self.db.get(b'state\0\0') state = self.db.get(b'state\0\0')