# Path: jacquard/storage/base.py
# class StorageEngine(metaclass=abc.ABCMeta):
#     """
#     Base storage engine class.
# 
#     StorageEngine subclasses are required to be thread-safe.
#     """
# 
#     @abc.abstractmethod
#     def __init__(self, connection_string):
#         """
#         Construct with a given connection string.
# 
#         It is typical for the connection string to be a URL: even for files it
#         should generally take the form of a file: scheme URL.
#         """
#         raise NotImplementedError
# 
#     @abc.abstractmethod
#     def begin(self):
#         """Enter a new transaction."""
#         raise NotImplementedError
# 
#     def begin_read_only(self):
#         """
#         Enter a new, read-only transaction.
# 
#         May be overloaded for efficiency - by default, just calls begin().
#         """
#         self.begin()
# 
#     @abc.abstractmethod
#     def commit(self, changes, deletions):
#         """
#         Commit transaction.
# 
#         Writes to make are given in the two arguments: `changes` is a mapping
#         of keys to their new string values, and `deletions` is an iterable of
#         keys to remove entirely.
# 
#         If optimistic locking or other transactional mechanisms fail, this can
#         raise the `Retry` exception to request that the entire transaction be
#         repeated.
#         """
#         raise NotImplementedError
# 
#     @abc.abstractmethod
#     def rollback(self):
#         """
#         Roll back the current transaction without writing any changes.
# 
#         This is used not only in exceptions but also when no writes were
#         necessary after a transaction, so should ideally be fairly fast.
#         """
#         raise NotImplementedError
# 
#     @abc.abstractmethod
#     def keys(self):
#         """
#         Get an iterable over all keys in the store.
# 
#         This is only ever called in transactions.
#         """
#         raise NotImplementedError
# 
#     @abc.abstractmethod
#     def get(self, key):
#         """
#         Get the current value corresponding with a given key.
# 
#         Where there is no current value this must return `None`.
# 
#         Only ever called in a transaction.
#         """
#         raise NotImplementedError
# 
#     def encode_key(self, key):
#         """
#         Convert a given key for use in the storage engine.
# 
#         This optional method is given for engine-specific encodings of keys -
#         for instance, replacing slashes with the more idiomatic colons and
#         prefix for the Redis backend. All keys entering the rest of the API
#         are encoded.
# 
#         The default implementation is the identity function.
#         """
#         return key
# 
#     def decode_key(self, key):
#         """
#         Convert a given key for use in Jacquard.
# 
#         This optional method must be implemented if `encode_key` is given,
#         and must be its inverse.
# 
#         The default implementation is the identity function.
#         """
#         return key
# 
#     @contextlib.contextmanager
#     def transaction(self, read_only=False):
#         """
#         Run a transactional sequence on this store.
# 
#         This is (currently?) the main user API for `StorageEngine`. The
#         context manager yields an object supporting the mutable mapping
#         protocol in all its glory, which can be treated as if a dict in,
#         say, the standard library's `shelve` module.
# 
#         When the context manager exits, the transaction is rolled back if
#         there are no writes or if an exception is escaping.
# 
#         Commits are allowed to raise the `Retry` exception and it is left to
#         users of the API to deal with this. `Retry` is guaranteed not to be
#         raised if the transaction was read-only.
#         """
#         if read_only:
#             self.begin_read_only()
#         else:
#             self.begin()
# 
#         transaction_map = TransactionMap(self)
# 
#         try:
#             yield transaction_map
#         except Exception:
#             self.rollback()
#             raise
# 
#         if not transaction_map.changes and not transaction_map.deletions:
#             # Don't bother running a commit if nothing actually changed
#             self.rollback()
#         elif (transaction_map.changes or transaction_map.deletions) and read_only:
#             self.rollback()
#             raise RuntimeError(
#                 "Commit in read-only transaction (keys: {keys})".format(
#                     keys=", ".join(
#                         repr(x)
#                         for x in (
#                             set(transaction_map.changes.keys())
#                             | set(transaction_map.deletions)
#                         )
#                     )
#                 )
#             )
#         else:
#             self.commit(transaction_map.changes, transaction_map.deletions)
# 
# Path: jacquard/storage/exceptions.py
# class Retry(Exception):
#     """
#     Raised in case of transaction commit failures.
# 
#     A request to re-try the transaction, in the hope that this time there are
#     no conflicts.
#     """
# 
#     pass


import time
import uuid
import pickle
import typing  # noqa: F401
import logging
import warnings
import threading
import redis
from jacquard.storage.base import StorageEngine
from jacquard.storage.exceptions import Retry

        new_state_key = str(uuid.uuid4()).encode("ascii")

        # Write back new state
        self.transaction_data.update(updates)

        for deletion in deletions:
            try:
                del self.transaction_data[deletion]
            except KeyError:
                pass

        raw_data = self._encode_redis_data(self.transaction_data)

        connection.set(b"jacquard-store:state:%s" % new_state_key, raw_data)

        # Update the current state pointer and notify
        pipeline = connection.pipeline(transaction=True)
        pipeline.set(b"jacquard-store:state-key", new_state_key)
        pipeline.publish("jacquard-store:state-key", new_state_key)

        if cur_state_key:
            # Expire the old state in half an hour.
            pipeline.expire(b"jacquard-store:state:%s" % cur_state_key, 1800)

        try:
            pipeline.execute()
        except Exception:
            del self.transaction_data
            del self.state_key

# Path: jacquard/storage/base.py
# class StorageEngine(metaclass=abc.ABCMeta):
#     """
#     Base storage engine class.
# 
#     StorageEngine subclasses are required to be thread-safe.
#     """
# 
#     @abc.abstractmethod
#     def __init__(self, connection_string):
#         """
#         Construct with a given connection string.
# 
#         It is typical for the connection string to be a URL: even for files it
#         should generally take the form of a file: scheme URL.
#         """
#         raise NotImplementedError
# 
#     @abc.abstractmethod
#     def begin(self):
#         """Enter a new transaction."""
#         raise NotImplementedError
# 
#     def begin_read_only(self):
#         """
#         Enter a new, read-only transaction.
# 
#         May be overloaded for efficiency - by default, just calls begin().
#         """
#         self.begin()
# 
#     @abc.abstractmethod
#     def commit(self, changes, deletions):
#         """
#         Commit transaction.
# 
#         Writes to make are given in the two arguments: `changes` is a mapping
#         of keys to their new string values, and `deletions` is an iterable of
#         keys to remove entirely.
# 
#         If optimistic locking or other transactional mechanisms fail, this can
#         raise the `Retry` exception to request that the entire transaction be
#         repeated.
#         """
#         raise NotImplementedError
# 
#     @abc.abstractmethod
#     def rollback(self):
#         """
#         Roll back the current transaction without writing any changes.
# 
#         This is used not only in exceptions but also when no writes were
#         necessary after a transaction, so should ideally be fairly fast.
#         """
#         raise NotImplementedError
# 
#     @abc.abstractmethod
#     def keys(self):
#         """
#         Get an iterable over all keys in the store.
# 
#         This is only ever called in transactions.
#         """
#         raise NotImplementedError
# 
#     @abc.abstractmethod
#     def get(self, key):
#         """
#         Get the current value corresponding with a given key.
# 
#         Where there is no current value this must return `None`.
# 
#         Only ever called in a transaction.
#         """
#         raise NotImplementedError
# 
#     def encode_key(self, key):
#         """
#         Convert a given key for use in the storage engine.
# 
#         This optional method is given for engine-specific encodings of keys -
#         for instance, replacing slashes with the more idiomatic colons and
#         prefix for the Redis backend. All keys entering the rest of the API
#         are encoded.
# 
#         The default implementation is the identity function.
#         """
#         return key
# 
#     def decode_key(self, key):
#         """
#         Convert a given key for use in Jacquard.
# 
#         This optional method must be implemented if `encode_key` is given,
#         and must be its inverse.
# 
#         The default implementation is the identity function.
#         """
#         return key
# 
#     @contextlib.contextmanager
#     def transaction(self, read_only=False):
#         """
#         Run a transactional sequence on this store.
# 
#         This is (currently?) the main user API for `StorageEngine`. The
#         context manager yields an object supporting the mutable mapping
#         protocol in all its glory, which can be treated as if a dict in,
#         say, the standard library's `shelve` module.
# 
#         When the context manager exits, the transaction is rolled back if
#         there are no writes or if an exception is escaping.
# 
#         Commits are allowed to raise the `Retry` exception and it is left to
#         users of the API to deal with this. `Retry` is guaranteed not to be
#         raised if the transaction was read-only.
#         """
#         if read_only:
#             self.begin_read_only()
#         else:
#             self.begin()
# 
#         transaction_map = TransactionMap(self)
# 
#         try:
#             yield transaction_map
#         except Exception:
#             self.rollback()
#             raise
# 
#         if not transaction_map.changes and not transaction_map.deletions:
#             # Don't bother running a commit if nothing actually changed
#             self.rollback()
#         elif (transaction_map.changes or transaction_map.deletions) and read_only:
#             self.rollback()
#             raise RuntimeError(
#                 "Commit in read-only transaction (keys: {keys})".format(
#                     keys=", ".join(
#                         repr(x)
#                         for x in (
#                             set(transaction_map.changes.keys())
#                             | set(transaction_map.deletions)
#                         )
#                     )
#                 )
#             )
#         else:
#             self.commit(transaction_map.changes, transaction_map.deletions)
# 
# Path: jacquard/storage/exceptions.py
# class Retry(Exception):
#     """
#     Raised in case of transaction commit failures.
# 
#     A request to re-try the transaction, in the hope that this time there are
#     no conflicts.
#     """
# 
#     pass


# Path: jacquard/storage/cloned_redis.py
import time
import uuid
import pickle
import typing  # noqa: F401
import logging
import warnings
import threading
import redis
from jacquard.storage.base import StorageEngine
from jacquard.storage.exceptions import Retry


        new_state_key = str(uuid.uuid4()).encode("ascii")

        # Write back new state
        self.transaction_data.update(updates)

        for deletion in deletions:
            try:
                del self.transaction_data[deletion]
            except KeyError:
                pass

        raw_data = self._encode_redis_data(self.transaction_data)

        connection.set(b"jacquard-store:state:%s" % new_state_key, raw_data)

        # Update the current state pointer and notify
        pipeline = connection.pipeline(transaction=True)
        pipeline.set(b"jacquard-store:state-key", new_state_key)
        pipeline.publish("jacquard-store:state-key", new_state_key)

        if cur_state_key:
            # Expire the old state in half an hour.
            pipeline.expire(b"jacquard-store:state:%s" % cur_state_key, 1800)

        try:
            pipeline.execute()
        except Exception:
            del self.transaction_data
            del self.state_key

            raise Retry()