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import os
import time
import pytest
from nexusformat.nexus.tree import (NeXusError, NXentry, NXLock, NXroot,
nxload, nxsetconfig, text)
def test_lock_creation(tmpdir, field4):
nxsetconfig(lock=0)
filename = os.path.join(tmpdir, "file1.nxs")
root = NXroot(NXentry(field4))
root.save(filename)
assert root.nxfile.lock is not None
root.nxfile.acquire_lock()
assert not root.nxfile.locked
assert not root.nxfile.is_locked()
root.nxfile.release_lock()
assert not root.nxfile.locked
assert not root.nxfile.is_locked()
root.nxfile.lock = True
root.nxfile.acquire_lock()
assert root.nxfile.locked
assert root.nxfile.is_locked()
assert root.nxfile.lock.timeout == 10
root["entry/f1"] = "b"
assert root["entry/f1"] == "b"
assert not root.nxfile.locked
assert not root.nxfile.is_locked()
def test_locked_assignments(tmpdir, field4):
filename = os.path.join(tmpdir, "file1.nxs")
root = NXroot(NXentry(field4))
root.save(filename)
assert root.nxfile.mtime == os.path.getmtime(filename)
original_id = id(root.nxfile)
originalmtime = root.mtime
root["entry/f1"] = "b"
assert root["entry/f1"] == "b"
root.nxfile.lock = 10
assert isinstance(root.nxfile.lock, NXLock)
assert root.nxfile.lock.timeout == 10
time.sleep(0.1)
root["entry/f1"] = "c"
assert root["entry/f1"] == "c"
assert id(root.nxfile) == original_id
assert root.mtime > originalmtime
def test_lock_interactions(tmpdir, field4):
filename = os.path.join(tmpdir, "file1.nxs")
root = NXroot(NXentry(field4))
root.save(filename)
assert not root.nxfile.is_open()
root1 = nxload(filename, mode="rw")
root2 = nxload(filename, mode="r")
time.sleep(0.1)
root1.nxfile.lock = 10
root1["entry/f1"] = "b"
assert root1.mtime > root2.mtime
def test_lock_defaults(tmpdir, field4):
nxsetconfig(lock=20)
filename = os.path.join(tmpdir, "file1.nxs")
root = NXroot(NXentry(field4))
root.save(filename, "w")
with root.nxfile as f:
assert isinstance(root.nxfile.lock, NXLock)
assert root.nxfile.lock.timeout == 20
assert root.nxfile.locked
assert root.nxfile.is_locked()
assert not root.nxfile.locked
assert not root.nxfile.is_locked()
nxsetconfig(lock=0)
root = NXroot(NXentry(field4))
root.save(filename, "w")
with root.nxfile as f:
assert not root.nxfile.locked
assert not root.nxfile.is_locked()
def test_nested_locks(tmpdir, field4):
filename = os.path.join(tmpdir, "file1.nxs")
root = NXroot(NXentry(field4))
root.save(filename, "w")
root.nxfile.lock = True
assert isinstance(root.nxfile.lock, NXLock)
with root.nxfile:
assert root.nxfile.locked
assert root.nxfile.is_locked()
root["entry/f1"] = "b"
assert text(root.nxfile["entry/f1"][()]) == "b"
with root.nxfile:
root["entry/f1"] = "c"
assert text(root.nxfile["entry/f1"][()]) == "c"
assert root.nxfile.locked
assert root.nxfile.is_locked()
assert root.nxfile.locked
assert root.nxfile.is_locked()
assert not root.nxfile.locked
assert not root.nxfile.is_locked()
def test_stale_locks(tmpdir):
nxsetconfig(lock=2, lockexpiry=3600)
filename = os.path.join(tmpdir, "file1.nxs")
root = NXroot(NXentry())
root.save(filename, "w")
with open(root.nxfile.lock_file, 'w'):
os.utime(root.nxfile.lock_file, None)
assert os.path.exists(root.nxfile.lock_file)
with pytest.raises(NeXusError):
root.nxfile.acquire_lock()
assert not root.nxfile.locked
assert root.nxfile.is_locked()
stat = os.stat(root.nxfile.lock_file)
os.utime(root.nxfile.lock_file, (stat.st_atime, stat.st_mtime - 10000))
with root.nxfile:
assert root.nxfile.locked
assert root.nxfile.is_locked()
assert not root.nxfile.locked
assert not root.nxfile.is_locked()
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