def test_wal_header_pg92():
header = b'q\xd0\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xef\xfc\rW'
walheader = wal.read_header(header)
assert walheader.lsn == "0/1000000"
assert walheader.filename == "000000010000000000000001"
constructed_header = wal_header_for_file("000000010000000000000001", version=90200)
# Ignore the useless rem_len field
assert constructed_header[:-4] == header[:-4]
def test_wal_header_pg92():
header = b'q\xd0\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xef\xfc\rW'
walheader = wal.read_header(header)
assert walheader.lsn == "0/1000000"
assert walheader.filename == "000000010000000000000001"
constructed_header = wal_header_for_file("000000010000000000000001", version=90200)
# Ignore the useless rem_len field
assert constructed_header[:-4] == header[:-4]
def _verify_wal(self, filetype, filename, path):
if filetype != "xlog":
return
try:
with open(path, "rb") as fp:
hdr = wal.read_header(fp.read(wal.WAL_HEADER_LEN))
except (KeyError, OSError, ValueError) as ex:
fmt = "WAL file {path!r} verification failed: {ex.__class__.__name__}: {ex}"
raise HttpResponse(fmt.format(path=path, ex=ex), status=412)
expected_lsn = wal.lsn_from_name(filename)
if hdr.lsn != expected_lsn:
fmt = "Expected LSN {lsn!r} in restored WAL file {path!r}; found {found!r}"
raise HttpResponse(fmt.format(lsn=expected_lsn, path=path, found=hdr.lsn), status=412)
def test_wal_header():
blob95 = WAL_HEADER_95
hdr95 = wal.WalHeader(version=90500, timeline=47, lsn='11/9C000000', filename='0000002F000000110000009C')
assert wal.read_header(blob95) == hdr95
# only first 20 bytes are used
assert wal.read_header(blob95 + b"XXX") == hdr95
with pytest.raises(ValueError):
wal.read_header(blob95[:18])
blob94 = b"\x7e\xd0" + blob95[2:]
hdr94 = hdr95._replace(version=90400)
assert wal.read_header(blob94) == hdr94
blob9X = b"\x7F\xd0" + blob95[2:]
with pytest.raises(KeyError):
wal.read_header(blob9X)
def test_wal_header():
blob95 = WAL_HEADER_95
hdr95 = wal.WalHeader(version=90500, timeline=47, lsn='11/9C000000', filename='0000002F000000110000009C')
assert wal.read_header(blob95) == hdr95
# only first 20 bytes are used
assert wal.read_header(blob95 + b"XXX") == hdr95
with pytest.raises(ValueError):
wal.read_header(blob95[:18])
blob94 = b"\x7e\xd0" + blob95[2:]
hdr94 = hdr95._replace(version=90400)
assert wal.read_header(blob94) == hdr94
blob9X = b"\x7F\xd0" + blob95[2:]
with pytest.raises(KeyError):
wal.read_header(blob9X)
def _verify_wal(self, filetype, filename, path):
if filetype != "xlog":
return
try:
with open(path, "rb") as fp:
hdr = wal.read_header(fp.read(wal.WAL_HEADER_LEN))
except (KeyError, OSError, ValueError) as ex:
fmt = "WAL file {path!r} verification failed: {ex.__class__.__name__}: {ex}"
raise HttpResponse(fmt.format(path=path, ex=ex), status=412)
expected_lsn = wal.lsn_from_name(filename)
if hdr.lsn != expected_lsn:
fmt = "Expected LSN {lsn!r} in restored WAL file {path!r}; found {found!r}"
raise HttpResponse(fmt.format(lsn=expected_lsn,
path=path,
found=hdr.lsn),
status=412)
def test_wal_header_pg95():
header = b'\x87\xd0\x02\x00\x01\x00\x00\x00\x00\x00\x00\x0b\x00\x00\x00\x00\x00\x00\x00\x00'
walheader = wal.read_header(header)
assert walheader.lsn == "0/B000000"
assert walheader.filename == "00000001000000000000000B"
def test_wal_header_pg95():
header = b'\x87\xd0\x02\x00\x01\x00\x00\x00\x00\x00\x00\x0b\x00\x00\x00\x00\x00\x00\x00\x00'
walheader = wal.read_header(header)
assert walheader.lsn == "0/B000000"
assert walheader.filename == "00000001000000000000000B"