File size: 5,242 Bytes
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import os
import subprocess
import sys
import numpy as np
import pytest
import tiledb
from tiledb.main import PyFragmentInfo
from tiledb.tests.common import DiskTestCase
def has_libfaketime():
try:
subprocess.check_output(["which", "faketime"])
return True
except subprocess.CalledProcessError:
return False
@pytest.mark.skipif(
sys.platform == "win32" or not has_libfaketime(),
reason=f"libfaketime not installed. {'Not supported on Windows.' if sys.platform == 'win32' else ''}",
)
class TestTimestampOverrides(DiskTestCase):
def test_timestamp_overrides(self):
uri_fragments = self.path("time_test_fragments")
uri_group_metadata = self.path("time_test_group_metadata")
python_exe = sys.executable
cmd = (
f"from tiledb.tests.test_timestamp_overrides import TestTimestampOverrides; "
f"TestTimestampOverrides().helper_fragments('{uri_fragments}'); "
f"TestTimestampOverrides().helper_group_metadata('{uri_group_metadata}')"
)
test_path = os.path.dirname(os.path.abspath(__file__))
try:
# "+x0" is the time multiplier, which makes the time freeze during the test
subprocess.check_output(
["faketime", "-f", "+x0", python_exe, "-c", cmd], cwd=test_path
)
except subprocess.CalledProcessError as e:
raise e
def helper_fragments(self, uri):
start_datetime = datetime.datetime.now()
fragments = 5
A = np.zeros(fragments)
dom = tiledb.Domain(tiledb.Dim(domain=(0, 4), tile=fragments, dtype=np.int64))
att = tiledb.Attr(dtype=A.dtype)
schema = tiledb.ArraySchema(domain=dom, attrs=(att,))
tiledb.DenseArray.create(uri, schema)
uris_seen = set()
chronological_order = []
for fragment_idx in range(fragments):
with tiledb.DenseArray(uri, mode="w") as T:
T[fragment_idx : fragment_idx + 1] = fragment_idx
# Read the data back immediately after writing to ensure it is correct
with tiledb.DenseArray(uri, mode="r") as T:
read_data = T[fragment_idx : fragment_idx + 1]
self.assertEqual(read_data, np.array([fragment_idx]))
fragment_info = PyFragmentInfo(uri, schema, False, tiledb.default_ctx())
uris = fragment_info.get_uri()
new_uri = set(uris) - uris_seen
uris_seen.update(uris)
chronological_order.extend(new_uri)
end_datetime = datetime.datetime.now()
self.assertEqual(start_datetime, end_datetime)
fragment_info = PyFragmentInfo(uri, schema, False, tiledb.default_ctx())
final_uris = fragment_info.get_uri()
# Keep only the last part of the uris
final_uris = [os.path.basename(uri) for uri in final_uris]
chronological_order = [os.path.basename(uri) for uri in chronological_order]
# Check that timestamps are the same (faketime is working)
timestamps = set()
for uri in final_uris:
parts = uri.split("_")
timestamps.add((parts[2], parts[3]))
self.assertEqual(len(timestamps), 1)
# Check that UUIDs are unique
uuids = set()
for uri in final_uris:
parts = uri.split("_")
uuids.add(parts[4])
self.assertEqual(len(uuids), fragments)
# Ensure that write order is correct
self.assertEqual(chronological_order, sorted(final_uris))
def helper_group_metadata(self, uri):
vfs = tiledb.VFS()
start_datetime = datetime.datetime.now()
tiledb.Group.create(uri)
loop_count = 10
uris_seen = set()
chronological_order = []
meta_path = f"{uri}/__meta"
for i in range(loop_count):
with tiledb.Group(uri, "w") as grp:
grp.meta["meta"] = i
# Read the data back immediately after writing to ensure it is correct
with tiledb.Group(uri, "r") as grp:
self.assertEqual(grp.meta["meta"], i)
uris = vfs.ls(meta_path)
new_uri = set(uris) - uris_seen
uris_seen.update(uris)
chronological_order.extend(new_uri)
end_datetime = datetime.datetime.now()
self.assertEqual(start_datetime, end_datetime)
final_uris = vfs.ls(meta_path)
# Keep only the last part of the uris
final_uris = [os.path.basename(uri) for uri in final_uris]
chronological_order = [os.path.basename(uri) for uri in chronological_order]
# Check that timestamps are the same (faketime is working)
timestamps = set()
for uri in final_uris:
parts = uri.split("_")
timestamps.add((parts[2], parts[3]))
self.assertEqual(len(timestamps), 1)
# Check that UUIDs are unique
uuids = set()
for uri in final_uris:
parts = uri.split("_")
uuids.add(parts[4])
self.assertEqual(len(uuids), loop_count)
# Ensure that write order is correct
self.assertEqual(chronological_order, sorted(final_uris))
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