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由 openaiops 创作于07a0fc69
trace_graph_db.py 2.88 KiB
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"""Wraps a BytesDB into TraceGraphDB."""
import os
import pickle as pkl
import re
from contextlib import contextmanager
from typing import *
import numpy as np
from .bytes_db import *
from .trace_graph import *
__all__ = ['TraceGraphDB', 'open_trace_graph_db']
class TraceGraphDB(object):
bytes_db: BytesDB
protocol: int
def __init__(self, bytes_db: BytesDB, protocol: Optional[int] = None):
if protocol is None:
protocol = pkl.DEFAULT_PROTOCOL
self.bytes_db = bytes_db
self.protocol = protocol
def __enter__(self):
self.bytes_db.__enter__()
return self
def __exit__(self, exc_type, exc_val, exc_tb):
self.bytes_db.__exit__(exc_type, exc_val, exc_tb)
def __len__(self) -> int:
return self.data_count()
def __getitem__(self, item: int):
return self.get(item)
def __iter__(self):
for i in range(self.data_count()):
yield self.get(i)
def __repr__(self):
desc = repr(self.bytes_db)
desc = desc[desc.find('(') + 1: -1]
return f'TraceGraphDB({desc})'
def sample_n(self,
n: int,
with_id: bool = False
) -> List[Union[TraceGraph, Tuple[int, TraceGraph]]]:
ret = []
indices = np.random.randint(self.data_count(), size=n)
for i in indices:
g = self.get(i)
if with_id:
ret.append((int(i), g))
else:
ret.append(g)
return ret
def data_count(self) -> int:
return self.bytes_db.data_count()
def get(self, item: int) -> TraceGraph:
return TraceGraph.from_bytes(self.bytes_db.get(item))
def add(self, g: TraceGraph) -> int:
return self.bytes_db.add(g.to_bytes(protocol=self.protocol))
@contextmanager
def write_batch(self):
with self.bytes_db.write_batch():
yield self
def commit(self):
self.bytes_db.commit()
def optimize(self):
self.bytes_db.optimize()
def close(self):
self.bytes_db.close()
def open_trace_graph_db(input_dir: str,
names: Optional[Sequence[str]] = (),
protocol: Optional[int] = None,
) -> Tuple[TraceGraphDB, TraceGraphIDManager]:
file_name = f'_bytes_{protocol}.db' if protocol else '_bytes.db'
id_manager = TraceGraphIDManager(os.path.join(input_dir, 'id_manager'))
if len(names) == 1:
db = TraceGraphDB(
BytesSqliteDB(os.path.join(input_dir, 'processed', names[0]), file_name=file_name),
protocol=protocol,
)
else:
db = TraceGraphDB(
BytesMultiDB(*[
BytesSqliteDB(os.path.join(input_dir, 'processed', name), file_name=file_name)
for name in names
]),
protocol=protocol,
)
return db, id_manager