Python TimeStamp.raw方法代码示例

# 需要导入模块: from persistent.TimeStamp import TimeStamp [as 别名]
# 或者: from persistent.TimeStamp.TimeStamp import raw [as 别名]
def copy(source, dest, verbose=0):
    """Copy transactions from a source to a destination storage

    This is typically used for converting data from one storage to
    another.  `source` must have an .iterator() method.
    """
    _ts = None
    ok = 1
    preindex = {};
    preget = preindex.get
    # restore() is a new storage API method which has an identical
    # signature to store() except that it does not return anything.
    # Semantically, restore() is also identical to store() except that it
    # doesn't do the ConflictError or VersionLockError consistency
    # checks.  The reason to use restore() over store() in this method is
    # that store() cannot be used to copy transactions spanning a version
    # commit or abort, or over transactional undos.
    #
    # We'll use restore() if it's available, otherwise we'll fall back to
    # using store().  However, if we use store, then
    # copyTransactionsFrom() may fail with VersionLockError or
    # ConflictError.
    restoring = py2_hasattr(dest, 'restore')
    fiter = source.iterator()
    for transaction in fiter:
        tid = transaction.tid
        if _ts is None:
            _ts = TimeStamp(tid)
        else:
            t = TimeStamp(tid)
            if t <= _ts:
                if ok: print(('Time stamps out of order %s, %s' % (_ts, t)))
                ok = 0
                _ts = t.laterThan(_ts)
                tid = _ts.raw()
            else:
                _ts = t
                if not ok:
                    print(('Time stamps back in order %s' % (t)))
                    ok = 1

        if verbose:
            print(_ts)

        dest.tpc_begin(transaction, tid, transaction.status)
        for r in transaction:
            oid = r.oid
            if verbose:
                print(oid_repr(oid), r.version, len(r.data))
            if restoring:
                dest.restore(oid, r.tid, r.data, r.version,
                             r.data_txn, transaction)
            else:
                pre = preget(oid, None)
                s = dest.store(oid, pre, r.data, r.version, transaction)
                preindex[oid] = s

        dest.tpc_vote(transaction)
        dest.tpc_finish(transaction)

# 需要导入模块: from persistent.TimeStamp import TimeStamp [as 别名]
# 或者: from persistent.TimeStamp.TimeStamp import raw [as 别名]
    def testMTime(self):
        obj = P()
        self.assertEqual(obj._p_mtime, None)

        t = int(time.time())
        ts = TimeStamp(*time.gmtime(t)[:6])
        obj._p_serial = ts.raw()
        self.assertEqual(obj._p_mtime, t)
        self.assertIsInstance(obj._p_mtime, float)

# 需要导入模块: from persistent.TimeStamp import TimeStamp [as 别名]
# 或者: from persistent.TimeStamp.TimeStamp import raw [as 别名]
    def tpc_begin(self, transaction, tid=None, status=' '):
        if self._is_read_only:
            raise POSException.ReadOnlyError()
        self._lock_acquire()
        try:
            if self._transaction is transaction:
                raise POSException.StorageTransactionError(
                    "Duplicate tpc_begin calls for same transaction")
            self._lock_release()
            self._commit_lock_acquire()
            self._lock_acquire()
            self._transaction = transaction
            self._clear_temp()

            user = transaction.user
            desc = transaction.description
            ext = transaction._extension
            if ext:
                ext = dumps(ext, _protocol)
            else:
                ext = ""

            self._ude = user, desc, ext

            if tid is None:
                now = time.time()
                t = TimeStamp(*(time.gmtime(now)[:5] + (now % 60,)))
                self._ts = t = t.laterThan(self._ts)
                self._tid = t.raw()
            else:
                self._ts = TimeStamp(tid)
                self._tid = tid

            self._tstatus = status
            self._begin(self._tid, user, desc, ext)
        finally:
            self._lock_release()

# 需要导入模块: from persistent.TimeStamp import TimeStamp [as 别名]
# 或者: from persistent.TimeStamp.TimeStamp import raw [as 别名]
def recover(inp, outp, verbose=0, partial=False, force=False, pack=None):
    print "Recovering", inp, "into", outp

    if os.path.exists(outp) and not force:
        die("%s exists" % outp)

    f = open(inp, "rb")
    if f.read(4) != ZODB.FileStorage.packed_version:
        die("input is not a file storage")

    f.seek(0,2)
    file_size = f.tell()

    ofs = ZODB.FileStorage.FileStorage(outp, create=1)
    _ts = None
    ok = 1
    prog1 = 0
    undone = 0

    pos = 4L
    ltid = None
    while pos:
        try:
            npos, txn, tid = read_txn_header(f, pos, file_size, outp, ltid)
        except EOFError:
            break
        except (KeyboardInterrupt, SystemExit):
            raise
        except Exception, err:
            print "error reading txn header:", err
            if not verbose:
                progress(prog1)
            pos = scan(f, pos)
            if verbose > 1:
                print "looking for valid txn header at", pos
            continue
        ltid = tid

        if txn is None:
            undone = undone + npos - pos
            pos = npos
            continue
        else:
            pos = npos

        tid = txn.tid

        if _ts is None:
            _ts = TimeStamp(tid)
        else:
            t = TimeStamp(tid)
            if t <= _ts:
                if ok:
                    print ("Time stamps out of order %s, %s" % (_ts, t))
                ok = 0
                _ts = t.laterThan(_ts)
                tid = _ts.raw()
            else:
                _ts = t
                if not ok:
                    print ("Time stamps back in order %s" % (t))
                    ok = 1

        ofs.tpc_begin(txn, tid, txn.status)

        if verbose:
            print "begin", pos, _ts,
            if verbose > 1:
                print
            sys.stdout.flush()

        nrec = 0
        try:
            for r in txn:
                if verbose > 1:
                    if r.data is None:
                        l = "bp"
                    else:
                        l = len(r.data)

                    print "%7d %s %s" % (u64(r.oid), l)
                ofs.restore(r.oid, r.tid, r.data, '', r.data_txn,
                            txn)
                nrec += 1
        except (KeyboardInterrupt, SystemExit):
            raise
        except Exception, err:
            if partial and nrec:
                ofs._status = "p"
                ofs.tpc_vote(txn)
                ofs.tpc_finish(txn)
                if verbose:
                    print "partial"
            else:
                ofs.tpc_abort(txn)
            print "error copying transaction:", err
            if not verbose:
                progress(prog1)
            pos = scan(f, pos)
            if verbose > 1:
#.........这里部分代码省略.........

# 需要导入模块: from persistent.TimeStamp import TimeStamp [as 别名]
# 或者: from persistent.TimeStamp.TimeStamp import raw [as 别名]
def newTid(old):
    t = time.time()
    ts = TimeStamp(*time.gmtime(t)[:5]+(t%60,))
    if old is not None:
        ts = ts.laterThan(TimeStamp(old))
    return ts.raw()

# 需要导入模块: from persistent.TimeStamp import TimeStamp [as 别名]
# 或者: from persistent.TimeStamp.TimeStamp import raw [as 别名]
def recover(inp, outp, verbose=0, partial=False, force=False, pack=None):
    print("Recovering", inp, "into", outp)

    if os.path.exists(outp) and not force:
        die("%s exists" % outp)

    f = open(inp, "rb")
    if f.read(4) != ZODB.FileStorage.packed_version:
        die("input is not a file storage")

    f.seek(0,2)
    file_size = f.tell()

    ofs = ZODB.FileStorage.FileStorage(outp, create=1)
    _ts = None
    ok = 1
    prog1 = 0
    undone = 0

    pos = 4
    ltid = None
    while pos:
        try:
            npos, txn, tid = read_txn_header(f, pos, file_size, outp, ltid)
        except EOFError:
            break
        except (KeyboardInterrupt, SystemExit):
            raise
        except Exception as err:
            print("error reading txn header:", err)
            if not verbose:
                progress(prog1)
            pos = scan(f, pos)
            if verbose > 1:
                print("looking for valid txn header at", pos)
            continue
        ltid = tid

        if txn is None:
            undone = undone + npos - pos
            pos = npos
            continue
        else:
            pos = npos

        tid = txn.tid

        if _ts is None:
            _ts = TimeStamp(tid)
        else:
            t = TimeStamp(tid)
            if t <= _ts:
                if ok:
                    print(("Time stamps out of order %s, %s" % (_ts, t)))
                ok = 0
                _ts = t.laterThan(_ts)
                tid = _ts.raw()
            else:
                _ts = t
                if not ok:
                    print(("Time stamps back in order %s" % (t)))
                    ok = 1

        ofs.tpc_begin(txn, tid, txn.status)

        if verbose:
            print("begin", pos, _ts, end=' ')
            if verbose > 1:
                print()
            sys.stdout.flush()

        nrec = 0
        try:
            for r in txn:
                if verbose > 1:
                    if r.data is None:
                        l = "bp"
                    else:
                        l = len(r.data)

                    print("%7d %s %s" % (u64(r.oid), l))
                ofs.restore(r.oid, r.tid, r.data, '', r.data_txn,
                            txn)
                nrec += 1
        except (KeyboardInterrupt, SystemExit):
            raise
        except Exception as err:
            if partial and nrec:
                ofs._status = "p"
                ofs.tpc_vote(txn)
                ofs.tpc_finish(txn)
                if verbose:
                    print("partial")
            else:
                ofs.tpc_abort(txn)
            print("error copying transaction:", err)
            if not verbose:
                progress(prog1)
            pos = scan(f, pos)
            if verbose > 1:
#.........这里部分代码省略.........