delete lbry/wallet/server/storage.py
-expose leveldb lru cache size as `CACHE_MB` hub param
This commit is contained in:
Jack Robison
parent
98bc7d1e0e
commit
fb1a774bc4
4 changed files with 18 additions and 183 deletions
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@ -392,7 +392,7 @@ class BlockProcessor:
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async def write_state(self):
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def flush():
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with self.db.db.write_batch() as batch:
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with self.db.db.write_batch(transaction=True) as batch:
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self.db.write_db_state(batch)
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await self.run_in_thread_with_lock(flush)
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@ -57,7 +57,7 @@ class Env:
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self.coin = Coin.lookup_coin_class(coin_name, network)
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self.es_index_prefix = self.default('ES_INDEX_PREFIX', '')
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self.es_mode = self.default('ES_MODE', 'writer')
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self.cache_MB = self.integer('CACHE_MB', 1200)
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self.cache_MB = self.integer('CACHE_MB', 4096)
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self.reorg_limit = self.integer('REORG_LIMIT', self.coin.REORG_LIMIT)
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# Server stuff
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self.tcp_port = self.integer('TCP_PORT', None)
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@ -8,7 +8,7 @@
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"""Interface to the blockchain database."""
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import os
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import asyncio
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import array
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import time
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@ -17,6 +17,7 @@ import struct
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import attr
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import zlib
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import base64
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import plyvel
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from typing import Optional, Iterable, Tuple, DefaultDict, Set, Dict, List
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from functools import partial
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from asyncio import sleep
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@ -28,7 +29,6 @@ from lbry.wallet.server import util
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from lbry.wallet.server.hash import hash_to_hex_str
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from lbry.wallet.server.tx import TxInput
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from lbry.wallet.server.merkle import Merkle, MerkleCache
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from lbry.wallet.server.storage import db_class
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from lbry.wallet.server.db import DB_PREFIXES
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from lbry.wallet.server.db.common import ResolveResult, STREAM_TYPES, CLAIM_TYPES
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from lbry.wallet.server.db.prefixes import Prefixes, PendingActivationValue, ClaimTakeoverValue, ClaimToTXOValue
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@ -107,7 +107,6 @@ class LevelDB:
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self.logger.info(f'switching current directory to {env.db_dir}')
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self.db_class = db_class(env.db_dir, self.env.db_engine)
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self.db = None
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self.hist_unflushed = defaultdict(partial(array.array, 'I'))
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@ -771,12 +770,19 @@ class LevelDB:
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async def open_dbs(self):
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if self.db:
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return
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assert self.db is None
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self.db = self.db_class(f'lbry-{self.env.db_engine}', True)
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if self.db.is_new:
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self.logger.info('created new db: %s', f'lbry-{self.env.db_engine}')
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path = os.path.join(self.env.db_dir, 'lbry-leveldb')
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is_new = os.path.isdir(path)
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self.db = plyvel.DB(
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path, create_if_missing=True, max_open_files=512,
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lru_cache_size=self.env.cache_MB * 1024 * 1024, write_buffer_size=64 * 1024 * 1024,
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max_file_size=1024 * 1024 * 64, bloom_filter_bits=32
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)
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if is_new:
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self.logger.info('created new db: %s', f'lbry-leveldb')
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else:
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self.logger.info(f'opened db: %s', f'lbry-{self.env.db_engine}')
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self.logger.info(f'opened db: %s', f'lbry-leveldb')
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# read db state
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self.read_db_state()
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@ -793,8 +799,6 @@ class LevelDB:
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self.logger.info(f'height: {self.db_height:,d}')
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self.logger.info(f'tip: {hash_to_hex_str(self.db_tip)}')
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self.logger.info(f'tx count: {self.db_tx_count:,d}')
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if self.db.for_sync:
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self.logger.info(f'flushing DB cache at {self.env.cache_MB:,d} MB')
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if self.first_sync:
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self.logger.info(f'sync time so far: {util.formatted_time(self.wall_time)}')
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if self.hist_db_version not in self.DB_VERSIONS:
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@ -859,7 +863,7 @@ class LevelDB:
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)
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)
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with self.db.write_batch() as batch:
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with self.db.write_batch(transaction=True) as batch:
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batch_put = batch.put
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batch_delete = batch.delete
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@ -900,7 +904,7 @@ class LevelDB:
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self.hist_flush_count += 1
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nremoves = 0
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with self.db.write_batch() as batch:
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with self.db.write_batch(transaction=True) as batch:
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batch_put = batch.put
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batch_delete = batch.delete
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for op in flush_data.put_and_delete_ops:
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@ -1,169 +0,0 @@
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# Copyright (c) 2016-2017, the ElectrumX authors
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#
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# All rights reserved.
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#
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# See the file "LICENCE" for information about the copyright
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# and warranty status of this software.
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"""Backend database abstraction."""
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import os
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from functools import partial
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from lbry.wallet.server import util
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def db_class(db_dir, name):
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"""Returns a DB engine class."""
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for db_class in util.subclasses(Storage):
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if db_class.__name__.lower() == name.lower():
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db_class.import_module()
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return partial(db_class, db_dir)
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raise RuntimeError(f'unrecognised DB engine "{name}"')
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class Storage:
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"""Abstract base class of the DB backend abstraction."""
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def __init__(self, db_dir, name, for_sync):
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self.db_dir = db_dir
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self.is_new = not os.path.exists(os.path.join(db_dir, name))
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self.for_sync = for_sync or self.is_new
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self.open(name, create=self.is_new)
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@classmethod
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def import_module(cls):
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"""Import the DB engine module."""
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raise NotImplementedError
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def open(self, name, create):
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"""Open an existing database or create a new one."""
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raise NotImplementedError
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def close(self):
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"""Close an existing database."""
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raise NotImplementedError
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def get(self, key):
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raise NotImplementedError
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def put(self, key, value):
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raise NotImplementedError
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def write_batch(self):
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"""Return a context manager that provides `put` and `delete`.
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Changes should only be committed when the context manager
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closes without an exception.
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"""
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raise NotImplementedError
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def iterator(self, prefix=b'', reverse=False):
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"""Return an iterator that yields (key, value) pairs from the
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database sorted by key.
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If `prefix` is set, only keys starting with `prefix` will be
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included. If `reverse` is True the items are returned in
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reverse order.
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"""
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raise NotImplementedError
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class LevelDB(Storage):
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"""LevelDB database engine."""
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@classmethod
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def import_module(cls):
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import plyvel
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cls.module = plyvel
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def open(self, name, create, lru_cache_size=None):
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mof = 512
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path = os.path.join(self.db_dir, name)
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# Use snappy compression (the default)
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self.db = self.module.DB(path, create_if_missing=create, max_open_files=mof, lru_cache_size=4*1024*1024*1024,
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write_buffer_size=64*1024*1024, max_file_size=1024*1024*64,
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bloom_filter_bits=32)
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self.close = self.db.close
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self.get = self.db.get
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self.put = self.db.put
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self.iterator = self.db.iterator
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self.write_batch = partial(self.db.write_batch, transaction=True)
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class RocksDB(Storage):
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"""RocksDB database engine."""
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@classmethod
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def import_module(cls):
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import rocksdb
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cls.module = rocksdb
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def open(self, name, create):
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mof = 512 if self.for_sync else 128
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path = os.path.join(self.db_dir, name)
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# Use snappy compression (the default)
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options = self.module.Options(create_if_missing=create,
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use_fsync=True,
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target_file_size_base=33554432,
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max_open_files=mof)
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self.db = self.module.DB(path, options)
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self.get = self.db.get
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self.put = self.db.put
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def close(self):
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# PyRocksDB doesn't provide a close method; hopefully this is enough
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self.db = self.get = self.put = None
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import gc
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gc.collect()
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def write_batch(self):
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return RocksDBWriteBatch(self.db)
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def iterator(self, prefix=b'', reverse=False):
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return RocksDBIterator(self.db, prefix, reverse)
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class RocksDBWriteBatch:
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"""A write batch for RocksDB."""
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def __init__(self, db):
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self.batch = RocksDB.module.WriteBatch()
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self.db = db
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def __enter__(self):
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return self.batch
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def __exit__(self, exc_type, exc_val, exc_tb):
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if not exc_val:
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self.db.write(self.batch)
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class RocksDBIterator:
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"""An iterator for RocksDB."""
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def __init__(self, db, prefix, reverse):
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self.prefix = prefix
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if reverse:
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self.iterator = reversed(db.iteritems())
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nxt_prefix = util.increment_byte_string(prefix)
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if nxt_prefix:
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self.iterator.seek(nxt_prefix)
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try:
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next(self.iterator)
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except StopIteration:
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self.iterator.seek(nxt_prefix)
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else:
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self.iterator.seek_to_last()
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else:
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self.iterator = db.iteritems()
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self.iterator.seek(prefix)
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def __iter__(self):
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return self
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def __next__(self):
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k, v = next(self.iterator)
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if not k.startswith(self.prefix):
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raise StopIteration
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return k, v
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