class Compression(PGHoardTestCase):
algorithm = None
def compress(self, data):
raise NotImplementedError
def decompress(self, data):
raise NotImplementedError
def setup_method(self, method):
super().setup_method(method)
self.config = {
"backup_sites": {
self.test_site: {
"object_storage": {
"storage_type": "s3",
},
"encryption_keys": {
"testkey": {
"public": CONSTANT_TEST_RSA_PUBLIC_KEY,
"private": CONSTANT_TEST_RSA_PRIVATE_KEY
},
},
},
},
"backup_location": os.path.join(self.temp_dir, "backups"),
"compression": {
"algorithm": self.algorithm,
}
}
self.compression_queue = Queue()
self.transfer_queue = Queue()
self.incoming_path = os.path.join(self.temp_dir, self.test_site, "xlog")
os.makedirs(self.incoming_path)
self.handled_path = os.path.join(self.config["backup_location"], self.test_site, "xlog")
os.makedirs(self.handled_path)
self.random_file_path = os.path.join(self.incoming_path, "00000001000000000000000C")
self.random_file_path_partial = os.path.join(self.incoming_path, "00000001000000000000000C.partial")
# Create a totally random file, bigger than block size. Compressed output is longer
self.random_file_contents = os.urandom(IO_BLOCK_SIZE * 2)
with open(self.random_file_path, "wb") as out:
out.write(self.random_file_contents)
self.random_file_size = out.tell()
# Create an easily compressible test file, too (with random prefix and suffix)
self.zero_file_path = os.path.join(self.incoming_path, "00000001000000000000000D")
self.zero_file_path_partial = os.path.join(self.incoming_path, "00000001000000000000000D.partial")
# ensure the plaintext file is bigger than the block size and zero (compressed is smaller)
zeros = (IO_BLOCK_SIZE * 2 - 32) * b"\x00"
self.zero_file_contents = os.urandom(16) + zeros + os.urandom(16)
with open(self.zero_file_path, "wb") as out:
out.write(self.zero_file_contents)
self.zero_file_size = out.tell()
self.compressor = CompressorThread(config=self.config,
compression_queue=self.compression_queue,
transfer_queue=self.transfer_queue)
self.compressor.start()
def teardown_method(self, method):
self.compressor.running = False
self.compression_queue.put({"type": "QUIT"})
self.compressor.join()
super().teardown_method(method)
def test_get_event_type(self):
filetype = self.compressor.get_event_filetype({
"full_path": "00000001000000000000000C",
"src_path": "00000001000000000000000C.partial",
"type": "MOVE",
})
assert filetype == "xlog"
# todo check timeline history file naming format
filetype = self.compressor.get_event_filetype({
"full_path": "1.history",
"src_path": "1.history.partial",
"type": "MOVE",
})
assert filetype == "timeline"
filetype = self.compressor.get_event_filetype({"type": "CLOSE_WRITE", "full_path": "base.tar"})
assert filetype == "basebackup"
def test_compress_to_file(self):
self.compression_queue.put({
"type": "MOVE",
"src_path": self.random_file_path_partial,
"full_path": self.random_file_path,
})
transfer_event = self.transfer_queue.get(timeout=1.0)
expected = {
"filetype": "xlog",
"local_path": self.random_file_path.replace(self.incoming_path, self.handled_path),
"metadata": {
"compression-algorithm": self.algorithm,
"original-file-size": self.random_file_size,
},
"site": self.test_site,
}
for key, value in expected.items():
assert transfer_event[key] == value
def test_compress_to_memory(self):
event = {
"compress_to_memory": True,
"delete_file_after_compression": False,
"full_path": self.random_file_path,
"src_path": self.random_file_path_partial,
"type": "MOVE",
}
self.compressor.handle_event(event, filetype="xlog")
expected = {
"callback_queue": None,
"filetype": "xlog",
"local_path": self.random_file_path,
"metadata": {
"compression-algorithm": self.algorithm,
"original-file-size": self.random_file_size,
},
"site": self.test_site,
}
transfer_event = self.transfer_queue.get()
for key, value in expected.items():
assert transfer_event[key] == value
assert self.decompress(transfer_event["blob"]) == self.random_file_contents
def test_compress_encrypt_to_memory(self):
self.compressor.config["backup_sites"][self.test_site]["encryption_key_id"] = "testkey"
event = {
"compress_to_memory": True,
"delete_file_after_compression": False,
"full_path": self.random_file_path,
"src_path": self.random_file_path_partial,
"type": "MOVE",
}
self.compressor.handle_event(event, filetype="xlog")
expected = {
"callback_queue": None,
"filetype": "xlog",
"local_path": self.random_file_path,
"metadata": {
"compression-algorithm": self.algorithm,
"encryption-key-id": "testkey",
"original-file-size": self.random_file_size,
},
"site": self.test_site,
}
transfer_event = self.transfer_queue.get()
for key, value in expected.items():
assert transfer_event[key] == value
def test_archive_command_compression(self):
callback_queue = Queue()
event = {
"callback_queue": callback_queue,
"compress_to_memory": True,
"delete_file_after_compression": False,
"full_path": self.zero_file_path,
"src_path": self.zero_file_path_partial,
"type": "CLOSE_WRITE",
}
transfer_event = self.compression_queue.put(event)
transfer_event = self.transfer_queue.get(timeout=1.0)
expected = {
"callback_queue": callback_queue,
"filetype": "xlog",
"local_path": self.zero_file_path,
"metadata": {
"compression-algorithm": self.algorithm,
"original-file-size": self.zero_file_size,
},
"site": self.test_site,
}
for key, value in expected.items():
assert transfer_event[key] == value
assert self.decompress(transfer_event["blob"]) == self.zero_file_contents
def test_decompression_event(self):
callback_queue = Queue()
local_filepath = os.path.join(self.temp_dir, "00000001000000000000000D")
self.compression_queue.put({
"blob": self.compress(self.random_file_contents),
"callback_queue": callback_queue,
"filetype": "xlog",
"local_path": local_filepath,
"metadata": {
"compression-algorithm": self.algorithm,
"original-file-size": self.random_file_size,
},
"site": self.test_site,
"type": "DECOMPRESSION",
})
callback_queue.get(timeout=1.0)
assert os.path.exists(local_filepath) is True
with open(local_filepath, "rb") as fp:
assert fp.read() == self.random_file_contents
def test_decompression_decrypt_event(self):
_, blob = self.compressor.compress_filepath_to_memory(
self.random_file_path,
compression_algorithm=self.compressor.compression_algorithm(),
rsa_public_key=CONSTANT_TEST_RSA_PUBLIC_KEY)
callback_queue = Queue()
local_filepath = os.path.join(self.temp_dir, "00000001000000000000000E")
self.compression_queue.put({
"blob": blob,
"callback_queue": callback_queue,
"filetype": "xlog",
"local_path": local_filepath,
"metadata": {
"compression-algorithm": self.algorithm,
"encryption-key-id": "testkey",
"original-file-size": self.random_file_size,
},
"site": self.test_site,
"type": "DECOMPRESSION",
})
callback_queue.get(timeout=1.0)
assert os.path.exists(local_filepath) is True
with open(local_filepath, "rb") as fp:
assert fp.read() == self.random_file_contents
class CompressionCase(PGHoardTestCase):
algorithm = None
def compress(self, data):
raise NotImplementedError
def decompress(self, data):
raise NotImplementedError
def setup_method(self, method):
super().setup_method(method)
self.log = logging.getLogger(str(method))
self.config = self.config_template()
self.config["backup_sites"][self.test_site] = {
"encryption_key_id": None,
"encryption_keys": {
"testkey": {"public": CONSTANT_TEST_RSA_PUBLIC_KEY, "private": CONSTANT_TEST_RSA_PRIVATE_KEY}
},
"object_storage": {"storage_type": "s3"},
"pg_version": 90500,
}
self.config["compression"]["algorithm"] = self.algorithm
self.compression_queue = Queue()
self.transfer_queue = Queue()
self.incoming_path = os.path.join(self.temp_dir, self.test_site, "xlog")
os.makedirs(self.incoming_path)
self.handled_path = os.path.join(self.config["backup_location"], self.test_site, "xlog")
os.makedirs(self.handled_path)
self.compressor = CompressorThread(
config_dict=self.config,
compression_queue=self.compression_queue,
transfer_queue=self.transfer_queue,
stats=statsd.StatsClient(host=None),
)
self.compressor.start()
def teardown_method(self, method):
self.compressor.running = False
self.compression_queue.put({"type": "QUIT"})
self.compressor.join()
super().teardown_method(method)
def test_get_event_type(self):
# Rename from .partial to final should be recognized
event = {
"full_path": "/out/00000001000000000000000C",
"src_path": "/tmp/00000001000000000000000C.partial",
"type": "MOVE",
}
assert self.compressor.get_event_filetype(event) == "xlog"
# Rename from non-partial suffix is not recognized
event["src_path"] += "xyz"
assert self.compressor.get_event_filetype(event) is None
# "CLOSE_WRITE" doesn't consider src_path
del event["src_path"]
event["type"] = "CLOSE_WRITE"
assert self.compressor.get_event_filetype(event) == "xlog"
# other event types are ignored
event["type"] = "NAKKI"
assert self.compressor.get_event_filetype(event) is None
# Timeline history files are handled the same way (do they actually ever have .partial?)
event = {"full_path": "/xlog/0000000A.history", "src_path": "/tmp/0000000A.history.partial", "type": "MOVE"}
assert self.compressor.get_event_filetype(event) == "timeline"
event["src_path"] += "xyz"
assert self.compressor.get_event_filetype(event) is None
del event["src_path"]
event["type"] = "CLOSE_WRITE"
assert self.compressor.get_event_filetype(event) == "timeline"
event = {"full_path": "/data/base.tar", "type": "CLOSE_WRITE"}
assert self.compressor.get_event_filetype(event) == "basebackup"
def test_write_file(self):
ifile = TestXlog(self.incoming_path, "00000001000000000000000C", "random")
with open(ifile.path, "rb") as input_obj, io.BytesIO() as output_obj:
orig_len, compr_len = rohmufile.write_file(
input_obj=input_obj, output_obj=output_obj, compression_algorithm=self.algorithm, log_func=self.log.info
)
assert output_obj.tell() == compr_len
assert len(output_obj.getvalue()) == compr_len
assert orig_len == ifile.size
def test_compress_to_file_xlog(self):
ifile = TestXlog(self.incoming_path, "00000001000000000000000C", "random")
self._test_compress_to_file("xlog", ifile.size, ifile.path, ifile.path_partial)
def test_compress_to_file_history(self):
file_path = os.path.join(self.incoming_path, "0000000F.history")
contents = "\n".join("# FOOBAR {}".format(n) for n in range(10)) + "\n"
contents = contents.encode("ascii")
with open(file_path, "wb") as out:
out.write(contents)
file_size = out.tell()
self._test_compress_to_file("timeline", file_size, file_path, file_path + ".partial")
def _test_compress_to_file(self, filetype, file_size, file_path, file_path_partial):
self.compression_queue.put({"type": "MOVE", "src_path": file_path_partial, "full_path": file_path})
transfer_event = self.transfer_queue.get(timeout=1.0)
expected = {
"filetype": filetype,
"local_path": file_path.replace(self.incoming_path, self.handled_path),
"metadata": {
"compression-algorithm": self.algorithm,
"compression-level": 0,
"original-file-size": file_size,
"pg-version": 90500,
},
"site": self.test_site,
}
for key, value in expected.items():
assert transfer_event[key] == value
def test_compress_to_memory(self):
ifile = TestXlog(self.incoming_path, "00000001000000000000000C", "random")
self.compression_queue.put(
{
"compress_to_memory": True,
"delete_file_after_compression": False,
"full_path": ifile.path,
"src_path": ifile.path_partial,
"type": "MOVE",
}
)
expected = {
"callback_queue": None,
"filetype": "xlog",
"local_path": ifile.path,
"metadata": {
"compression-algorithm": self.algorithm,
"compression-level": 0,
"original-file-size": ifile.size,
"pg-version": 90500,
},
"site": self.test_site,
}
transfer_event = self.transfer_queue.get(timeout=1.0)
for key, value in expected.items():
assert transfer_event[key] == value
result = self.decompress(transfer_event["blob"])
assert result[:100] == ifile.contents[:100]
assert result == ifile.contents
def test_compress_encrypt_to_memory(self):
ifile = TestXlog(self.incoming_path, "00000001000000000000000C", "random")
self.compressor.config["backup_sites"][self.test_site]["encryption_key_id"] = "testkey"
event = {
"compress_to_memory": True,
"delete_file_after_compression": False,
"full_path": ifile.path,
"src_path": ifile.path_partial,
"type": "MOVE",
}
self.compressor.handle_event(event, filetype="xlog")
expected = {
"callback_queue": None,
"filetype": "xlog",
"local_path": ifile.path,
"metadata": {
"compression-algorithm": self.algorithm,
"compression-level": 0,
"encryption-key-id": "testkey",
"original-file-size": ifile.size,
"pg-version": 90500,
},
"site": self.test_site,
}
transfer_event = self.transfer_queue.get(timeout=1.0)
for key, value in expected.items():
assert transfer_event[key] == value
def test_archive_command_compression(self):
zero = TestXlog(self.incoming_path, "00000001000000000000000D", "zero")
callback_queue = Queue()
event = {
"callback_queue": callback_queue,
"compress_to_memory": True,
"delete_file_after_compression": False,
"full_path": zero.path,
"src_path": zero.path_partial,
"type": "CLOSE_WRITE",
}
transfer_event = self.compression_queue.put(event)
transfer_event = self.transfer_queue.get(timeout=1.0)
expected = {
"callback_queue": callback_queue,
"filetype": "xlog",
"local_path": zero.path,
"metadata": {
"compression-algorithm": self.algorithm,
"compression-level": 0,
"original-file-size": zero.size,
"pg-version": 90500,
},
"site": self.test_site,
}
for key, value in expected.items():
assert transfer_event[key] == value
assert self.decompress(transfer_event["blob"]) == zero.contents
def test_decompression_event(self):
ifile = TestXlog(self.incoming_path, "00000001000000000000000A", "random")
callback_queue = Queue()
local_filepath = os.path.join(self.temp_dir, "00000001000000000000000A")
self.compression_queue.put(
{
"blob": self.compress(ifile.contents),
"callback_queue": callback_queue,
"filetype": "xlog",
"local_path": local_filepath,
"metadata": {
"compression-algorithm": self.algorithm,
"compression-level": 0,
"original-file-size": ifile.size,
"pg-version": 90500,
},
"site": self.test_site,
"type": "DECOMPRESSION",
}
)
callback_queue.get(timeout=1.0)
assert os.path.exists(local_filepath) is True
with open(local_filepath, "rb") as fp:
fdata = fp.read()
assert fdata[:100] == ifile.contents[:100]
assert fdata == ifile.contents
def test_decompression_decrypt_event(self):
ifile = TestXlog(self.incoming_path, "00000001000000000000000E", "random")
output_obj = io.BytesIO()
with open(ifile.path, "rb") as input_obj:
rohmufile.write_file(
input_obj=input_obj,
output_obj=output_obj,
compression_algorithm=self.config["compression"]["algorithm"],
compression_level=self.config["compression"]["level"],
rsa_public_key=CONSTANT_TEST_RSA_PUBLIC_KEY,
log_func=self.log.info,
)
callback_queue = Queue()
local_filepath = os.path.join(self.temp_dir, "00000001000000000000000E")
self.compression_queue.put(
{
"blob": output_obj.getvalue(),
"callback_queue": callback_queue,
"filetype": "xlog",
"local_path": local_filepath,
"metadata": {
"compression-algorithm": self.algorithm,
"compression-level": 0,
"encryption-key-id": "testkey",
"original-file-size": ifile.size,
"pg-version": 90500,
},
"site": self.test_site,
"type": "DECOMPRESSION",
}
)
callback_queue.get(timeout=1.0)
assert os.path.exists(local_filepath) is True
with open(local_filepath, "rb") as fp:
fdata = fp.read()
assert fdata[:100] == ifile.contents[:100]
assert fdata == ifile.contents
def test_compress_decompress_fileobj(self, tmpdir):
plaintext = TestXlog(self.incoming_path, "00000001000000000000000E", "random").contents
output_file = tmpdir.join("data.out").strpath
with open(output_file, "w+b") as plain_fp:
cmp_fp = compressor.CompressionFile(plain_fp, self.algorithm)
assert cmp_fp.fileno() == plain_fp.fileno()
assert cmp_fp.readable() is False
with pytest.raises(io.UnsupportedOperation):
cmp_fp.read(1)
assert cmp_fp.seekable() is False
with pytest.raises(io.UnsupportedOperation):
cmp_fp.seek(1, os.SEEK_CUR)
assert cmp_fp.writable() is True
cmp_fp.write(plaintext)
cmp_fp.write(b"")
assert cmp_fp.tell() == len(plaintext)
cmp_fp.close()
cmp_fp.close()
plain_fp.seek(0)
dec_fp = compressor.DecompressionFile(plain_fp, self.algorithm)
assert dec_fp.fileno() == plain_fp.fileno()
assert dec_fp.readable() is True
assert dec_fp.writable() is False
with pytest.raises(io.UnsupportedOperation):
dec_fp.write(b"x")
dec_fp.flush()
# TODO: snappy returns random amounts of output per read call
chunks = []
while chunks == [] or chunks[-1] != b"":
chunks.append(dec_fp.read())
result = b"".join(chunks)
assert plaintext == result
class CompressionCase(PGHoardTestCase):
algorithm = None
def compress(self, data):
raise NotImplementedError
def decompress(self, data):
raise NotImplementedError
def setup_method(self, method):
super().setup_method(method)
self.log = logging.getLogger(str(method))
self.config = self.config_template()
self.config["backup_sites"][self.test_site] = {
"encryption_key_id": None,
"encryption_keys": {
"testkey": {
"public": CONSTANT_TEST_RSA_PUBLIC_KEY,
"private": CONSTANT_TEST_RSA_PRIVATE_KEY
},
},
"object_storage": {
"storage_type": "s3",
},
"pg_version": 90500,
}
self.config["compression"]["algorithm"] = self.algorithm
self.compression_queue = Queue()
self.transfer_queue = Queue()
self.incoming_path = os.path.join(self.temp_dir, self.test_site,
"xlog")
os.makedirs(self.incoming_path)
self.handled_path = os.path.join(self.config["backup_location"],
self.test_site, "xlog")
os.makedirs(self.handled_path)
self.compressor = CompressorThread(
config_dict=self.config,
compression_queue=self.compression_queue,
transfer_queue=self.transfer_queue,
stats=statsd.StatsClient(host=None),
)
self.compressor.start()
def teardown_method(self, method):
self.compressor.running = False
self.compression_queue.put({"type": "QUIT"})
self.compressor.join()
super().teardown_method(method)
def test_get_event_type(self):
# Rename from .partial to final should be recognized
event = {
"full_path": "/out/00000001000000000000000C",
"src_path": "/tmp/00000001000000000000000C.partial",
"type": "MOVE",
}
assert self.compressor.get_event_filetype(event) == "xlog"
# Rename from non-partial suffix is not recognized
event["src_path"] += "xyz"
assert self.compressor.get_event_filetype(event) is None
# "CLOSE_WRITE" doesn't consider src_path
del event["src_path"]
event["type"] = "CLOSE_WRITE"
assert self.compressor.get_event_filetype(event) == "xlog"
# other event types are ignored
event["type"] = "NAKKI"
assert self.compressor.get_event_filetype(event) is None
# Timeline history files are handled the same way (do they actually ever have .partial?)
event = {
"full_path": "/xlog/0000000A.history",
"src_path": "/tmp/0000000A.history.partial",
"type": "MOVE",
}
assert self.compressor.get_event_filetype(event) == "timeline"
event["src_path"] += "xyz"
assert self.compressor.get_event_filetype(event) is None
del event["src_path"]
event["type"] = "CLOSE_WRITE"
assert self.compressor.get_event_filetype(event) == "timeline"
event = {
"full_path": "/data/base.tar",
"type": "CLOSE_WRITE",
}
assert self.compressor.get_event_filetype(event) == "basebackup"
def test_write_file(self):
ifile = TestXlog(self.incoming_path, "00000001000000000000000C",
"random")
with open(ifile.path, "rb") as input_obj, io.BytesIO() as output_obj:
orig_len, compr_len = rohmufile.write_file(
input_obj=input_obj,
output_obj=output_obj,
compression_algorithm=self.algorithm,
log_func=self.log.info,
)
assert output_obj.tell() == compr_len
assert len(output_obj.getvalue()) == compr_len
assert orig_len == ifile.size
def test_compress_to_file_xlog(self):
ifile = TestXlog(self.incoming_path, "00000001000000000000000C",
"random")
self._test_compress_to_file("xlog", ifile.size, ifile.path,
ifile.path_partial)
def test_compress_to_file_history(self):
file_path = os.path.join(self.incoming_path, "0000000F.history")
contents = "\n".join("# FOOBAR {}".format(n) for n in range(10)) + "\n"
contents = contents.encode("ascii")
with open(file_path, "wb") as out:
out.write(contents)
file_size = out.tell()
self._test_compress_to_file("timeline", file_size, file_path,
file_path + ".partial")
def _test_compress_to_file(self, filetype, file_size, file_path,
file_path_partial):
self.compression_queue.put({
"type": "MOVE",
"src_path": file_path_partial,
"full_path": file_path,
})
transfer_event = self.transfer_queue.get(timeout=1.0)
expected = {
"filetype": filetype,
"local_path": file_path.replace(self.incoming_path,
self.handled_path),
"metadata": {
"compression-algorithm": self.algorithm,
"compression-level": 0,
"original-file-size": file_size,
"pg-version": 90500,
},
"site": self.test_site,
}
for key, value in expected.items():
assert transfer_event[key] == value
def test_compress_to_memory(self):
ifile = TestXlog(self.incoming_path, "00000001000000000000000C",
"random")
self.compression_queue.put({
"compress_to_memory": True,
"delete_file_after_compression": False,
"full_path": ifile.path,
"src_path": ifile.path_partial,
"type": "MOVE",
})
expected = {
"callback_queue": None,
"filetype": "xlog",
"local_path": ifile.path,
"metadata": {
"compression-algorithm": self.algorithm,
"compression-level": 0,
"original-file-size": ifile.size,
"pg-version": 90500,
},
"site": self.test_site,
}
transfer_event = self.transfer_queue.get(timeout=1.0)
for key, value in expected.items():
assert transfer_event[key] == value
result = self.decompress(transfer_event["blob"])
assert result[:100] == ifile.contents[:100]
assert result == ifile.contents
def test_compress_encrypt_to_memory(self):
ifile = TestXlog(self.incoming_path, "00000001000000000000000C",
"random")
self.compressor.config["backup_sites"][
self.test_site]["encryption_key_id"] = "testkey"
event = {
"compress_to_memory": True,
"delete_file_after_compression": False,
"full_path": ifile.path,
"src_path": ifile.path_partial,
"type": "MOVE",
}
self.compressor.handle_event(event, filetype="xlog")
expected = {
"callback_queue": None,
"filetype": "xlog",
"local_path": ifile.path,
"metadata": {
"compression-algorithm": self.algorithm,
"compression-level": 0,
"encryption-key-id": "testkey",
"original-file-size": ifile.size,
"pg-version": 90500,
},
"site": self.test_site,
}
transfer_event = self.transfer_queue.get(timeout=1.0)
for key, value in expected.items():
assert transfer_event[key] == value
def test_archive_command_compression(self):
zero = TestXlog(self.incoming_path, "00000001000000000000000D", "zero")
callback_queue = Queue()
event = {
"callback_queue": callback_queue,
"compress_to_memory": True,
"delete_file_after_compression": False,
"full_path": zero.path,
"src_path": zero.path_partial,
"type": "CLOSE_WRITE",
}
transfer_event = self.compression_queue.put(event)
transfer_event = self.transfer_queue.get(timeout=1.0)
expected = {
"callback_queue": callback_queue,
"filetype": "xlog",
"local_path": zero.path,
"metadata": {
"compression-algorithm": self.algorithm,
"compression-level": 0,
"original-file-size": zero.size,
"pg-version": 90500,
},
"site": self.test_site,
}
for key, value in expected.items():
assert transfer_event[key] == value
assert self.decompress(transfer_event["blob"]) == zero.contents
def test_decompression_event(self):
ifile = TestXlog(self.incoming_path, "00000001000000000000000A",
"random")
callback_queue = Queue()
local_filepath = os.path.join(self.temp_dir,
"00000001000000000000000A")
self.compression_queue.put({
"blob": self.compress(ifile.contents),
"callback_queue": callback_queue,
"filetype": "xlog",
"local_path": local_filepath,
"metadata": {
"compression-algorithm": self.algorithm,
"compression-level": 0,
"original-file-size": ifile.size,
"pg-version": 90500,
},
"site": self.test_site,
"type": "DECOMPRESSION",
})
callback_queue.get(timeout=1.0)
assert os.path.exists(local_filepath) is True
with open(local_filepath, "rb") as fp:
fdata = fp.read()
assert fdata[:100] == ifile.contents[:100]
assert fdata == ifile.contents
def test_decompression_decrypt_event(self):
ifile = TestXlog(self.incoming_path, "00000001000000000000000E",
"random")
output_obj = io.BytesIO()
with open(ifile.path, "rb") as input_obj:
rohmufile.write_file(
input_obj=input_obj,
output_obj=output_obj,
compression_algorithm=self.config["compression"]["algorithm"],
compression_level=self.config["compression"]["level"],
rsa_public_key=CONSTANT_TEST_RSA_PUBLIC_KEY,
log_func=self.log.info,
)
callback_queue = Queue()
local_filepath = os.path.join(self.temp_dir,
"00000001000000000000000E")
self.compression_queue.put({
"blob": output_obj.getvalue(),
"callback_queue": callback_queue,
"filetype": "xlog",
"local_path": local_filepath,
"metadata": {
"compression-algorithm": self.algorithm,
"compression-level": 0,
"encryption-key-id": "testkey",
"original-file-size": ifile.size,
"pg-version": 90500,
},
"site": self.test_site,
"type": "DECOMPRESSION",
})
callback_queue.get(timeout=1.0)
assert os.path.exists(local_filepath) is True
with open(local_filepath, "rb") as fp:
fdata = fp.read()
assert fdata[:100] == ifile.contents[:100]
assert fdata == ifile.contents
def test_compress_decompress_fileobj(self, tmpdir):
plaintext = TestXlog(self.incoming_path, "00000001000000000000000E",
"random").contents
output_file = tmpdir.join("data.out").strpath
with open(output_file, "w+b") as plain_fp:
cmp_fp = compressor.CompressionFile(plain_fp, self.algorithm)
assert cmp_fp.fileno() == plain_fp.fileno()
assert cmp_fp.readable() is False
with pytest.raises(io.UnsupportedOperation):
cmp_fp.read(1)
assert cmp_fp.seekable() is False
with pytest.raises(io.UnsupportedOperation):
cmp_fp.seek(1, os.SEEK_CUR)
assert cmp_fp.writable() is True
cmp_fp.write(plaintext)
cmp_fp.write(b"")
assert cmp_fp.tell() == len(plaintext)
cmp_fp.close()
cmp_fp.close()
plain_fp.seek(0)
dec_fp = compressor.DecompressionFile(plain_fp, self.algorithm)
assert dec_fp.fileno() == plain_fp.fileno()
assert dec_fp.readable() is True
assert dec_fp.writable() is False
with pytest.raises(io.UnsupportedOperation):
dec_fp.write(b"x")
dec_fp.flush()
# TODO: snappy returns random amounts of output per read call
chunks = []
while chunks == [] or chunks[-1] != b"":
chunks.append(dec_fp.read())
result = b"".join(chunks)
assert plaintext == result
class Compression(PGHoardTestCase):
algorithm = None
def compress(self, data):
raise NotImplementedError
def decompress(self, data):
raise NotImplementedError
def setup_method(self, method):
super().setup_method(method)
self.config = self.config_template()
self.config["backup_sites"][self.test_site] = {
"encryption_key_id": None,
"encryption_keys": {
"testkey": {
"public": CONSTANT_TEST_RSA_PUBLIC_KEY,
"private": CONSTANT_TEST_RSA_PRIVATE_KEY
},
},
"object_storage": {
"storage_type": "s3",
},
"pg_version": 90500,
}
self.config["compression"]["algorithm"] = self.algorithm
self.compression_queue = Queue()
self.transfer_queue = Queue()
self.incoming_path = os.path.join(self.temp_dir, self.test_site,
"xlog")
os.makedirs(self.incoming_path)
self.handled_path = os.path.join(self.config["backup_location"],
self.test_site, "xlog")
os.makedirs(self.handled_path)
self.random_file_path = os.path.join(self.incoming_path,
"00000001000000000000000C")
self.random_file_path_partial = os.path.join(
self.incoming_path, "00000001000000000000000C.partial")
# Create a totally random file, bigger than block size. Compressed output is longer
self.random_file_contents = os.urandom(IO_BLOCK_SIZE * 2)
with open(self.random_file_path, "wb") as out:
out.write(self.random_file_contents)
self.random_file_size = out.tell()
# Create an easily compressible test file, too (with random prefix and suffix)
self.zero_file_path = os.path.join(self.incoming_path,
"00000001000000000000000D")
self.zero_file_path_partial = os.path.join(
self.incoming_path, "00000001000000000000000D.partial")
# ensure the plaintext file is bigger than the block size and zero (compressed is smaller)
zeros = (IO_BLOCK_SIZE * 2 - 32) * b"\x00"
self.zero_file_contents = os.urandom(16) + zeros + os.urandom(16)
with open(self.zero_file_path, "wb") as out:
out.write(self.zero_file_contents)
self.zero_file_size = out.tell()
self.compressor = CompressorThread(
config=self.config,
compression_queue=self.compression_queue,
transfer_queue=self.transfer_queue)
self.compressor.start()
def teardown_method(self, method):
self.compressor.running = False
self.compression_queue.put({"type": "QUIT"})
self.compressor.join()
super().teardown_method(method)
def test_get_event_type(self):
filetype = self.compressor.get_event_filetype({
"full_path": "00000001000000000000000C",
"src_path": "00000001000000000000000C.partial",
"type": "MOVE",
})
assert filetype == "xlog"
# todo check timeline history file naming format
filetype = self.compressor.get_event_filetype({
"full_path": "1.history",
"src_path": "1.history.partial",
"type": "MOVE",
})
assert filetype == "timeline"
filetype = self.compressor.get_event_filetype({
"type": "CLOSE_WRITE",
"full_path": "base.tar"
})
assert filetype == "basebackup"
def test_compress_to_file(self):
self.compression_queue.put({
"type": "MOVE",
"src_path": self.random_file_path_partial,
"full_path": self.random_file_path,
})
transfer_event = self.transfer_queue.get(timeout=1.0)
expected = {
"filetype":
"xlog",
"local_path":
self.random_file_path.replace(self.incoming_path,
self.handled_path),
"metadata": {
"compression-algorithm": self.algorithm,
"original-file-size": self.random_file_size,
"pg-version": 90500,
},
"site":
self.test_site,
}
for key, value in expected.items():
assert transfer_event[key] == value
def test_compress_to_memory(self):
event = {
"compress_to_memory": True,
"delete_file_after_compression": False,
"full_path": self.random_file_path,
"src_path": self.random_file_path_partial,
"type": "MOVE",
}
self.compressor.handle_event(event, filetype="xlog")
expected = {
"callback_queue": None,
"filetype": "xlog",
"local_path": self.random_file_path,
"metadata": {
"compression-algorithm": self.algorithm,
"original-file-size": self.random_file_size,
"pg-version": 90500,
},
"site": self.test_site,
}
transfer_event = self.transfer_queue.get()
for key, value in expected.items():
assert transfer_event[key] == value
assert self.decompress(
transfer_event["blob"]) == self.random_file_contents
def test_compress_encrypt_to_memory(self):
self.compressor.config["backup_sites"][
self.test_site]["encryption_key_id"] = "testkey"
event = {
"compress_to_memory": True,
"delete_file_after_compression": False,
"full_path": self.random_file_path,
"src_path": self.random_file_path_partial,
"type": "MOVE",
}
self.compressor.handle_event(event, filetype="xlog")
expected = {
"callback_queue": None,
"filetype": "xlog",
"local_path": self.random_file_path,
"metadata": {
"compression-algorithm": self.algorithm,
"encryption-key-id": "testkey",
"original-file-size": self.random_file_size,
"pg-version": 90500,
},
"site": self.test_site,
}
transfer_event = self.transfer_queue.get()
for key, value in expected.items():
assert transfer_event[key] == value
def test_archive_command_compression(self):
callback_queue = Queue()
event = {
"callback_queue": callback_queue,
"compress_to_memory": True,
"delete_file_after_compression": False,
"full_path": self.zero_file_path,
"src_path": self.zero_file_path_partial,
"type": "CLOSE_WRITE",
}
transfer_event = self.compression_queue.put(event)
transfer_event = self.transfer_queue.get(timeout=1.0)
expected = {
"callback_queue": callback_queue,
"filetype": "xlog",
"local_path": self.zero_file_path,
"metadata": {
"compression-algorithm": self.algorithm,
"original-file-size": self.zero_file_size,
"pg-version": 90500,
},
"site": self.test_site,
}
for key, value in expected.items():
assert transfer_event[key] == value
assert self.decompress(
transfer_event["blob"]) == self.zero_file_contents
def test_decompression_event(self):
callback_queue = Queue()
local_filepath = os.path.join(self.temp_dir,
"00000001000000000000000D")
self.compression_queue.put({
"blob":
self.compress(self.random_file_contents),
"callback_queue":
callback_queue,
"filetype":
"xlog",
"local_path":
local_filepath,
"metadata": {
"compression-algorithm": self.algorithm,
"original-file-size": self.random_file_size,
"pg-version": 90500,
},
"site":
self.test_site,
"type":
"DECOMPRESSION",
})
callback_queue.get(timeout=1.0)
assert os.path.exists(local_filepath) is True
with open(local_filepath, "rb") as fp:
assert fp.read() == self.random_file_contents
def test_decompression_decrypt_event(self):
_, blob = self.compressor.compress_filepath_to_memory(
self.random_file_path,
compression_algorithm=self.config["compression"]["algorithm"],
rsa_public_key=CONSTANT_TEST_RSA_PUBLIC_KEY)
callback_queue = Queue()
local_filepath = os.path.join(self.temp_dir,
"00000001000000000000000E")
self.compression_queue.put({
"blob": blob,
"callback_queue": callback_queue,
"filetype": "xlog",
"local_path": local_filepath,
"metadata": {
"compression-algorithm": self.algorithm,
"encryption-key-id": "testkey",
"original-file-size": self.random_file_size,
"pg-version": 90500,
},
"site": self.test_site,
"type": "DECOMPRESSION",
})
callback_queue.get(timeout=1.0)
assert os.path.exists(local_filepath) is True
with open(local_filepath, "rb") as fp:
assert fp.read() == self.random_file_contents
