forked from LBRYCommunity/lbry-sdk
rocksdb column families
This commit is contained in:
Jack Robison
parent
46bcc5d725
commit
49802b39cb
5 changed files with 167 additions and 168 deletions
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@ -39,7 +39,7 @@ class DB_PREFIXES(enum.Enum):
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db_state = b's'
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channel_count = b'Z'
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support_amount = b'a'
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block_txs = b'b'
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block_tx = b'b'
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trending_notifications = b'c'
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mempool_tx = b'd'
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touched_hashX = b'e'
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@ -394,7 +394,9 @@ class HubDB:
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def get_claims_for_name(self, name):
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claims = []
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prefix = self.prefix_db.claim_short_id.pack_partial_key(name) + bytes([1])
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for _k, _v in self.prefix_db.iterator(prefix=prefix):
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stop = self.prefix_db.claim_short_id.pack_partial_key(name) + int(2).to_bytes(1, byteorder='big')
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cf = self.prefix_db.column_families[self.prefix_db.claim_short_id.prefix]
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for _v in self.prefix_db.iterator(column_family=cf, start=prefix, iterate_upper_bound=stop, include_key=False):
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v = self.prefix_db.claim_short_id.unpack_value(_v)
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claim_hash = self.get_claim_from_txo(v.tx_num, v.position).claim_hash
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if claim_hash not in claims:
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@ -459,7 +461,9 @@ class HubDB:
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def get_claim_txos_for_name(self, name: str):
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txos = {}
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prefix = self.prefix_db.claim_short_id.pack_partial_key(name) + int(1).to_bytes(1, byteorder='big')
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for k, v in self.prefix_db.iterator(prefix=prefix):
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stop = self.prefix_db.claim_short_id.pack_partial_key(name) + int(2).to_bytes(1, byteorder='big')
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cf = self.prefix_db.column_families[self.prefix_db.claim_short_id.prefix]
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for v in self.prefix_db.iterator(column_family=cf, start=prefix, iterate_upper_bound=stop, include_key=False):
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tx_num, nout = self.prefix_db.claim_short_id.unpack_value(v)
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txos[self.get_claim_from_txo(tx_num, nout).claim_hash] = tx_num, nout
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return txos
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@ -1,126 +1,12 @@
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import struct
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import typing
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import rocksdb
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from typing import Optional
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from lbry.wallet.server.db import DB_PREFIXES
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from lbry.wallet.server.db.revertable import RevertableOpStack, RevertablePut, RevertableDelete
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class RocksDBStore:
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def __init__(self, path: str, cache_mb: int, max_open_files: int, secondary_path: str = ''):
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# Use snappy compression (the default)
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self.path = path
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self.secondary_path = secondary_path
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self._max_open_files = max_open_files
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self.db = rocksdb.DB(path, self.get_options(), secondary_name=secondary_path)
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# self.multi_get = self.db.multi_get
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def get_options(self):
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return rocksdb.Options(
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create_if_missing=True, use_fsync=True, target_file_size_base=33554432,
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max_open_files=self._max_open_files if not self.secondary_path else -1
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)
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def get(self, key: bytes, fill_cache: bool = True) -> Optional[bytes]:
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return self.db.get(key, fill_cache=fill_cache)
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def iterator(self, reverse=False, start=None, stop=None, include_start=True, include_stop=False, prefix=None,
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include_key=True, include_value=True, fill_cache=True):
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return RocksDBIterator(
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self.db, reverse=reverse, start=start, stop=stop, include_start=include_start, include_stop=include_stop,
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prefix=prefix if start is None and stop is None else None, include_key=include_key,
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include_value=include_value
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)
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def write_batch(self, disable_wal: bool = False, sync: bool = False):
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return RocksDBWriteBatch(self.db, sync=sync, disable_wal=disable_wal)
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def close(self):
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self.db.close()
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self.db = None
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@property
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def closed(self) -> bool:
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return self.db is None
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def try_catch_up_with_primary(self):
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self.db.try_catch_up_with_primary()
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class RocksDBWriteBatch:
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def __init__(self, db: rocksdb.DB, sync: bool = False, disable_wal: bool = False):
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self.batch = rocksdb.WriteBatch()
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self.db = db
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self.sync = sync
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self.disable_wal = disable_wal
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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, sync=self.sync, disable_wal=self.disable_wal)
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class RocksDBIterator:
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"""An iterator for RocksDB."""
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__slots__ = [
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'start',
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'prefix',
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'stop',
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'iterator',
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'include_key',
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'include_value',
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'prev_k',
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'reverse',
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'include_start',
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'include_stop'
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]
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def __init__(self, db: rocksdb.DB, prefix: bytes = None, start: bytes = None, stop: bytes = None,
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include_key: bool = True, include_value: bool = True, reverse: bool = False,
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include_start: bool = True, include_stop: bool = False):
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assert (start is None and stop is None) or (prefix is None), 'cannot use start/stop and prefix'
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self.start = start
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self.prefix = prefix
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self.stop = stop
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self.iterator = db.iteritems() if not reverse else reversed(db.iteritems())
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if prefix is not None:
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self.iterator.seek(prefix)
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elif start is not None:
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self.iterator.seek(start)
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self.include_key = include_key
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self.include_value = include_value
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self.prev_k = None
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self.reverse = reverse
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self.include_start = include_start
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self.include_stop = include_stop
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def __iter__(self):
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return self
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def _check_stop_iteration(self, key: bytes):
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if self.stop is not None and (key.startswith(self.stop) or self.stop < key[:len(self.stop)]):
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raise StopIteration
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elif self.start is not None and self.start > key[:len(self.start)]:
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raise StopIteration
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elif self.prefix is not None and not key.startswith(self.prefix):
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raise StopIteration
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def __next__(self):
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if self.prev_k is not None:
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self._check_stop_iteration(self.prev_k)
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k, v = next(self.iterator)
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self._check_stop_iteration(k)
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self.prev_k = k
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if self.include_key and self.include_value:
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return k, v
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elif self.include_key:
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return k
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return v
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class PrefixDB:
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"""
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Base class for a revertable rocksdb database (a rocksdb db where each set of applied changes can be undone)
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@ -128,9 +14,25 @@ class PrefixDB:
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UNDO_KEY_STRUCT = struct.Struct(b'>Q32s')
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PARTIAL_UNDO_KEY_STRUCT = struct.Struct(b'>Q')
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def __init__(self, db: RocksDBStore, max_undo_depth: int = 200, unsafe_prefixes=None):
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self._db = db
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self._op_stack = RevertableOpStack(db.get, unsafe_prefixes=unsafe_prefixes)
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def __init__(self, path, max_open_files=64, secondary_path='', max_undo_depth: int = 200, unsafe_prefixes=None):
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column_family_options = {
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prefix.value: rocksdb.ColumnFamilyOptions() for prefix in DB_PREFIXES
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} if secondary_path else {}
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self.column_families: typing.Dict[bytes, 'rocksdb.ColumnFamilyHandle'] = {}
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self._db = rocksdb.DB(
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path, rocksdb.Options(
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create_if_missing=True, use_fsync=True, target_file_size_base=33554432,
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max_open_files=max_open_files if not secondary_path else -1
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), secondary_name=secondary_path, column_families=column_family_options
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)
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for prefix in DB_PREFIXES:
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cf = self._db.get_column_family(prefix.value)
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if cf is None and not secondary_path:
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self._db.create_column_family(prefix.value, rocksdb.ColumnFamilyOptions())
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cf = self._db.get_column_family(prefix.value)
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self.column_families[prefix.value] = cf
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self._op_stack = RevertableOpStack(self.get, unsafe_prefixes=unsafe_prefixes)
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self._max_undo_depth = max_undo_depth
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def unsafe_commit(self):
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@ -144,11 +46,13 @@ class PrefixDB:
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with self._db.write_batch(sync=True) as batch:
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batch_put = batch.put
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batch_delete = batch.delete
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get_column_family = self.column_families.__getitem__
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for staged_change in self._op_stack:
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column_family = get_column_family(DB_PREFIXES(staged_change.key[:1]).value)
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if staged_change.is_put:
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batch_put(staged_change.key, staged_change.value)
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batch_put((column_family, staged_change.key), staged_change.value)
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else:
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batch_delete(staged_change.key)
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batch_delete((column_family, staged_change.key))
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finally:
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self._op_stack.clear()
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@ -161,21 +65,24 @@ class PrefixDB:
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if height > self._max_undo_depth:
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delete_undos.extend(self._db.iterator(
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start=DB_PREFIXES.undo.value + self.PARTIAL_UNDO_KEY_STRUCT.pack(0),
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stop=DB_PREFIXES.undo.value + self.PARTIAL_UNDO_KEY_STRUCT.pack(height - self._max_undo_depth),
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iterate_upper_bound=DB_PREFIXES.undo.value + self.PARTIAL_UNDO_KEY_STRUCT.pack(height - self._max_undo_depth),
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include_value=False
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))
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try:
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undo_c_f = self.column_families[DB_PREFIXES.undo.value]
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with self._db.write_batch(sync=True) as batch:
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batch_put = batch.put
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batch_delete = batch.delete
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get_column_family = self.column_families.__getitem__
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for staged_change in self._op_stack:
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column_family = get_column_family(DB_PREFIXES(staged_change.key[:1]).value)
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if staged_change.is_put:
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batch_put(staged_change.key, staged_change.value)
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batch_put((column_family, staged_change.key), staged_change.value)
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else:
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batch_delete(staged_change.key)
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batch_delete((column_family, staged_change.key))
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for undo_to_delete in delete_undos:
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batch_delete(undo_to_delete)
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batch_put(DB_PREFIXES.undo.value + self.UNDO_KEY_STRUCT.pack(height, block_hash), undo_ops)
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batch_delete((undo_c_f, undo_to_delete))
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batch_put((undo_c_f, DB_PREFIXES.undo.value + self.UNDO_KEY_STRUCT.pack(height, block_hash)), undo_ops)
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finally:
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self._op_stack.clear()
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@ -184,33 +91,41 @@ class PrefixDB:
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Revert changes for a block height
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"""
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undo_key = DB_PREFIXES.undo.value + self.UNDO_KEY_STRUCT.pack(height, block_hash)
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undo_info = self._db.get(undo_key)
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undo_c_f = self.column_families[DB_PREFIXES.undo.value]
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undo_info = self._db.get((undo_c_f, undo_key))
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self._op_stack.apply_packed_undo_ops(undo_info)
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try:
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with self._db.write_batch(sync=True) as batch:
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batch_put = batch.put
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batch_delete = batch.delete
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get_column_family = self.column_families.__getitem__
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for staged_change in self._op_stack:
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column_family = get_column_family(DB_PREFIXES(staged_change.key[:1]).value)
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if staged_change.is_put:
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batch_put(staged_change.key, staged_change.value)
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batch_put((column_family, staged_change.key), staged_change.value)
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else:
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batch_delete(staged_change.key)
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batch_delete((column_family, staged_change.key))
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# batch_delete(undo_key)
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finally:
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self._op_stack.clear()
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def get(self, key: bytes, fill_cache: bool = True) -> Optional[bytes]:
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return self._db.get(key, fill_cache=fill_cache)
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cf = self.column_families[key[:1]]
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return self._db.get((cf, key), fill_cache=fill_cache)
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def iterator(self, reverse=False, start=None, stop=None, include_start=True, include_stop=False, prefix=None,
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include_key=True, include_value=True, fill_cache=True):
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def iterator(self, start: bytes, column_family: 'rocksdb.ColumnFamilyHandle' = None,
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iterate_lower_bound: bytes = None, iterate_upper_bound: bytes = None,
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reverse: bool = False, include_key: bool = True, include_value: bool = True,
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fill_cache: bool = True, prefix_same_as_start: bool = True, auto_prefix_mode: bool = True):
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return self._db.iterator(
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reverse=reverse, start=start, stop=stop, include_start=include_start, include_stop=include_stop,
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prefix=prefix, include_key=include_key, include_value=include_value, fill_cache=fill_cache
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start=start, column_family=column_family, iterate_lower_bound=iterate_lower_bound,
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iterate_upper_bound=iterate_upper_bound, reverse=reverse, include_key=include_key,
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include_value=include_value, fill_cache=fill_cache, prefix_same_as_start=prefix_same_as_start,
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auto_prefix_mode=auto_prefix_mode
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)
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def close(self):
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if not self._db.closed:
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if not self._db.is_closed:
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self._db.close()
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def try_catch_up_with_primary(self):
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@ -218,7 +133,7 @@ class PrefixDB:
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@property
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def closed(self) -> bool:
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return self._db.closed
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return self._db.is_closed
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def stage_raw_put(self, key: bytes, value: bytes):
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self._op_stack.append_op(RevertablePut(key, value))
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@ -4,10 +4,12 @@ import array
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import base64
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from typing import Union, Tuple, NamedTuple, Optional
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from lbry.wallet.server.db import DB_PREFIXES
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from lbry.wallet.server.db.interface import RocksDBStore, PrefixDB
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from lbry.wallet.server.db.interface import PrefixDB
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from lbry.wallet.server.db.common import TrendingNotification
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from lbry.wallet.server.db.revertable import RevertableOpStack, RevertablePut, RevertableDelete
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from lbry.schema.url import normalize_name
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if typing.TYPE_CHECKING:
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import rocksdb
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ACTIVATED_CLAIM_TXO_TYPE = 1
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ACTIVATED_SUPPORT_TXO_TYPE = 2
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@ -39,21 +41,32 @@ class PrefixRow(metaclass=PrefixRowType):
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value_struct: struct.Struct
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key_part_lambdas = []
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def __init__(self, db: RocksDBStore, op_stack: RevertableOpStack):
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def __init__(self, db: 'rocksdb.DB', op_stack: RevertableOpStack):
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self._db = db
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self._op_stack = op_stack
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self._column_family = self._db.get_column_family(self.prefix)
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if not self._column_family.is_valid:
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raise RuntimeError('column family is not valid')
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def iterate(self, prefix=None, start=None, stop=None,
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reverse: bool = False, include_key: bool = True, include_value: bool = True,
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fill_cache: bool = True, deserialize_key: bool = True, deserialize_value: bool = True):
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def iterate(self, prefix=None, start=None, stop=None, reverse: bool = False, include_key: bool = True,
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include_value: bool = True, fill_cache: bool = True, deserialize_key: bool = True,
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deserialize_value: bool = True):
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if not prefix and not start and not stop:
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prefix = ()
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if prefix is not None:
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prefix = self.pack_partial_key(*prefix)
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if start is not None:
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start = self.pack_partial_key(*start)
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if stop is not None:
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stop = self.pack_partial_key(*stop)
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if stop is None:
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try:
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stop = (int.from_bytes(prefix, byteorder='big') + 1).to_bytes(len(prefix), byteorder='big')
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except OverflowError:
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stop = (int.from_bytes(prefix, byteorder='big') + 1).to_bytes(len(prefix) + 1, byteorder='big')
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else:
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stop = self.pack_partial_key(*stop)
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else:
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if start is not None:
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start = self.pack_partial_key(*start)
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if stop is not None:
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stop = self.pack_partial_key(*stop)
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if deserialize_key:
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key_getter = lambda k: self.unpack_key(k)
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@ -64,25 +77,27 @@ class PrefixRow(metaclass=PrefixRowType):
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else:
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value_getter = lambda v: v
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it = self._db.iterator(
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start or prefix, self._column_family, iterate_lower_bound=None,
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iterate_upper_bound=stop, reverse=reverse, include_key=include_key,
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include_value=include_value, fill_cache=fill_cache, prefix_same_as_start=True
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)
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if include_key and include_value:
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for k, v in self._db.iterator(prefix=prefix, start=start, stop=stop, reverse=reverse,
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fill_cache=fill_cache):
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yield key_getter(k), value_getter(v)
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for k, v in it:
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yield key_getter(k[1]), value_getter(v)
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elif include_key:
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for k in self._db.iterator(prefix=prefix, start=start, stop=stop, reverse=reverse, include_value=False,
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fill_cache=fill_cache):
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yield key_getter(k)
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for k in it:
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yield key_getter(k[1])
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elif include_value:
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for v in self._db.iterator(prefix=prefix, start=start, stop=stop, reverse=reverse, include_key=False,
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fill_cache=fill_cache):
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for v in it:
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yield value_getter(v)
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else:
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for _ in self._db.iterator(prefix=prefix, start=start, stop=stop, reverse=reverse, include_key=False,
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include_value=False, fill_cache=fill_cache):
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for _ in it:
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yield None
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def get(self, *key_args, fill_cache=True, deserialize_value=True):
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v = self._db.get(self.pack_key(*key_args), fill_cache=fill_cache)
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v = self._db.get((self._column_family, self.pack_key(*key_args)), fill_cache=fill_cache)
|
||||
if v:
|
||||
return v if not deserialize_value else self.unpack_value(v)
|
||||
|
||||
|
|
@ -94,7 +109,7 @@ class PrefixRow(metaclass=PrefixRowType):
|
|||
return last_op.value if not deserialize_value else self.unpack_value(last_op.value)
|
||||
else: # it's a delete
|
||||
return
|
||||
v = self._db.get(packed_key, fill_cache=fill_cache)
|
||||
v = self._db.get((self._column_family, packed_key), fill_cache=fill_cache)
|
||||
if v:
|
||||
return v if not deserialize_value else self.unpack_value(v)
|
||||
|
||||
|
|
@ -118,7 +133,7 @@ class PrefixRow(metaclass=PrefixRowType):
|
|||
|
||||
@classmethod
|
||||
def unpack_key(cls, key: bytes):
|
||||
assert key[:1] == cls.prefix
|
||||
assert key[:1] == cls.prefix, f"prefix should be {cls.prefix}, got {key[:1]}"
|
||||
return cls.key_struct.unpack(key[1:])
|
||||
|
||||
@classmethod
|
||||
|
|
@ -1571,7 +1586,7 @@ class DBStatePrefixRow(PrefixRow):
|
|||
|
||||
|
||||
class BlockTxsPrefixRow(PrefixRow):
|
||||
prefix = DB_PREFIXES.block_txs.value
|
||||
prefix = DB_PREFIXES.block_tx.value
|
||||
key_struct = struct.Struct(b'>L')
|
||||
key_part_lambdas = [
|
||||
lambda: b'',
|
||||
|
|
@ -1600,12 +1615,18 @@ class BlockTxsPrefixRow(PrefixRow):
|
|||
return cls.pack_key(height), cls.pack_value(tx_hashes)
|
||||
|
||||
|
||||
class MempoolTxKey(TxKey):
|
||||
pass
|
||||
class MempoolTxKey(NamedTuple):
|
||||
tx_hash: bytes
|
||||
|
||||
def __str__(self):
|
||||
return f"{self.__class__.__name__}(tx_hash={self.tx_hash[::-1].hex()})"
|
||||
|
||||
|
||||
class MempoolTxValue(TxValue):
|
||||
pass
|
||||
class MempoolTxValue(NamedTuple):
|
||||
raw_tx: bytes
|
||||
|
||||
def __str__(self):
|
||||
return f"{self.__class__.__name__}(raw_tx={base64.b64encode(self.raw_tx).decode()})"
|
||||
|
||||
|
||||
class MempoolTXPrefixRow(PrefixRow):
|
||||
|
|
@ -1724,8 +1745,9 @@ class TouchedHashXPrefixRow(PrefixRow):
|
|||
class HubDB(PrefixDB):
|
||||
def __init__(self, path: str, cache_mb: int = 128, reorg_limit: int = 200, max_open_files: int = 512,
|
||||
secondary_path: str = '', unsafe_prefixes: Optional[typing.Set[bytes]] = None):
|
||||
db = RocksDBStore(path, cache_mb, max_open_files, secondary_path=secondary_path)
|
||||
super().__init__(db, reorg_limit, unsafe_prefixes=unsafe_prefixes)
|
||||
super().__init__(path, max_open_files=max_open_files, secondary_path=secondary_path,
|
||||
max_undo_depth=reorg_limit, unsafe_prefixes=unsafe_prefixes)
|
||||
db = self._db
|
||||
self.claim_to_support = ClaimToSupportPrefixRow(db, self._op_stack)
|
||||
self.support_to_claim = SupportToClaimPrefixRow(db, self._op_stack)
|
||||
self.claim_to_txo = ClaimToTXOPrefixRow(db, self._op_stack)
|
||||
|
|
|
|||
|
|
@ -151,3 +151,61 @@ class TestRevertablePrefixDB(unittest.TestCase):
|
|||
self.assertEqual(10000000, self.db.claim_takeover.get(name).height)
|
||||
self.db.rollback(10000000, b'\x00' * 32)
|
||||
self.assertIsNone(self.db.claim_takeover.get(name))
|
||||
|
||||
def test_hub_db_iterator(self):
|
||||
name = 'derp'
|
||||
claim_hash0 = 20 * b'\x00'
|
||||
claim_hash1 = 20 * b'\x01'
|
||||
claim_hash2 = 20 * b'\x02'
|
||||
claim_hash3 = 20 * b'\x03'
|
||||
overflow_value = 0xffffffff
|
||||
self.db.claim_expiration.stage_put((99, 999, 0), (claim_hash0, name))
|
||||
self.db.claim_expiration.stage_put((100, 1000, 0), (claim_hash1, name))
|
||||
self.db.claim_expiration.stage_put((100, 1001, 0), (claim_hash2, name))
|
||||
self.db.claim_expiration.stage_put((101, 1002, 0), (claim_hash3, name))
|
||||
self.db.claim_expiration.stage_put((overflow_value - 1, 1003, 0), (claim_hash3, name))
|
||||
self.db.claim_expiration.stage_put((overflow_value, 1004, 0), (claim_hash3, name))
|
||||
self.db.tx_num.stage_put((b'\x00' * 32,), (101,))
|
||||
self.db.claim_takeover.stage_put((name,), (claim_hash3, 101))
|
||||
self.db.db_state.stage_put((), (b'n?\xcf\x12\x99\xd4\xec]y\xc3\xa4\xc9\x1dbJJ\xcf\x9e.\x17=\x95\xa1\xa0POgvihuV', 0, 1, b'VuhivgOP\xa0\xa1\x95=\x17.\x9e\xcfJJb\x1d\xc9\xa4\xc3y]\xec\xd4\x99\x12\xcf?n', 1, 0, 1, 7, 1, -1, -1, 0))
|
||||
self.db.unsafe_commit()
|
||||
|
||||
state = self.db.db_state.get()
|
||||
self.assertEqual(b'n?\xcf\x12\x99\xd4\xec]y\xc3\xa4\xc9\x1dbJJ\xcf\x9e.\x17=\x95\xa1\xa0POgvihuV', state.genesis)
|
||||
|
||||
self.assertListEqual(
|
||||
[], list(self.db.claim_expiration.iterate(prefix=(98,)))
|
||||
)
|
||||
self.assertListEqual(
|
||||
list(self.db.claim_expiration.iterate(start=(98,), stop=(99,))),
|
||||
list(self.db.claim_expiration.iterate(prefix=(98,)))
|
||||
)
|
||||
self.assertListEqual(
|
||||
list(self.db.claim_expiration.iterate(start=(99,), stop=(100,))),
|
||||
list(self.db.claim_expiration.iterate(prefix=(99,)))
|
||||
)
|
||||
self.assertListEqual(
|
||||
[
|
||||
((99, 999, 0), (claim_hash0, name)),
|
||||
], list(self.db.claim_expiration.iterate(prefix=(99,)))
|
||||
)
|
||||
self.assertListEqual(
|
||||
[
|
||||
((100, 1000, 0), (claim_hash1, name)),
|
||||
((100, 1001, 0), (claim_hash2, name))
|
||||
], list(self.db.claim_expiration.iterate(prefix=(100,)))
|
||||
)
|
||||
self.assertListEqual(
|
||||
list(self.db.claim_expiration.iterate(start=(100,), stop=(101,))),
|
||||
list(self.db.claim_expiration.iterate(prefix=(100,)))
|
||||
)
|
||||
self.assertListEqual(
|
||||
[
|
||||
((overflow_value - 1, 1003, 0), (claim_hash3, name))
|
||||
], list(self.db.claim_expiration.iterate(prefix=(overflow_value - 1,)))
|
||||
)
|
||||
self.assertListEqual(
|
||||
[
|
||||
((overflow_value, 1004, 0), (claim_hash3, name))
|
||||
], list(self.db.claim_expiration.iterate(prefix=(overflow_value,)))
|
||||
)
|
||||
|
|
|
|||
Loading…
Reference in a new issue