def test_write_would_block_too_many_times(self):
self.useFixture(fixtures.MonkeyPatch(
'ironic_inspector.pxe_filter.dnsmasq._EXCLUSIVE_WRITE_ATTEMPTS',
1))
err = IOError('Oops!')
err.errno = errno.EWOULDBLOCK
self.mock_fcntl.side_effect = [err, None]
wrote = dnsmasq._exclusive_write_or_pass(self.path, self.buf)
self.assertFalse(wrote)
self.mock_open.assert_called_once_with(self.path, 'w', 1)
self.mock_fcntl.assert_has_calls(
[self.fcntl_lock_call, self.fcntl_unlock_call])
self.mock_fd.write.assert_not_called()
retry_log_call = mock.call('%s locked; will try again (later)',
self.path)
failed_log_call = mock.call(
'Failed to write the exclusively-locked path: %(path)s for '
'%(attempts)s times', {
'attempts': dnsmasq._EXCLUSIVE_WRITE_ATTEMPTS,
'path': self.path
})
self.mock_log.assert_has_calls([retry_log_call, failed_log_call])
self.mock_sleep.assert_called_once_with(
dnsmasq._EXCLUSIVE_WRITE_ATTEMPTS_DELAY)
def test_write_would_block_too_many_times(self):
self.useFixture(fixtures.MonkeyPatch(
'ironic_inspector.pxe_filter.dnsmasq._EXCLUSIVE_WRITE_ATTEMPTS',
1))
err = IOError('Oops!')
err.errno = errno.EWOULDBLOCK
self.mock_fcntl.side_effect = [err, None]
wrote = dnsmasq._exclusive_write_or_pass(self.path, self.buf)
self.assertFalse(wrote)
self.mock_open.assert_called_once_with(self.path, 'w', 1)
self.mock_fcntl.assert_has_calls(
[self.fcntl_lock_call, self.fcntl_unlock_call])
self.mock_fd.write.assert_not_called()
retry_log_call = mock.call('%s locked; will try again (later)',
self.path)
failed_log_call = mock.call(
'Failed to write the exclusively-locked path: %(path)s for '
'%(attempts)s times', {
'attempts': dnsmasq._EXCLUSIVE_WRITE_ATTEMPTS,
'path': self.path
})
self.mock_log.assert_has_calls([retry_log_call, failed_log_call])
self.mock_sleep.assert_called_once_with(
dnsmasq._EXCLUSIVE_WRITE_ATTEMPTS_DELAY)
def test_write(self):
wrote = dnsmasq._exclusive_write_or_pass(self.path, self.buf)
self.assertTrue(wrote)
self.mock_open.assert_called_once_with(self.path, 'w', 1)
self.mock_fcntl.assert_has_calls(
[self.fcntl_lock_call, self.fcntl_unlock_call])
self.mock_fd.write.assert_called_once_with(self.buf)
self.mock_log.assert_not_called()
def test_write(self):
wrote = dnsmasq._exclusive_write_or_pass(self.path, self.buf)
self.assertTrue(wrote)
self.mock_open.assert_called_once_with(self.path, 'w', 1)
self.mock_fcntl.assert_has_calls(
[self.fcntl_lock_call, self.fcntl_unlock_call])
self.mock_fd.write.assert_called_once_with(self.buf)
self.mock_log.assert_not_called()
def test_write_would_block(self):
err = IOError('Oops!')
err.errno = errno.EWOULDBLOCK
# lock/unlock paired calls
self.mock_fcntl.side_effect = [
# first try
err, None,
# second try
None, None]
wrote = dnsmasq._exclusive_write_or_pass(self.path, self.buf)
self.assertTrue(wrote)
self.mock_open.assert_called_once_with(self.path, 'w', 1)
self.mock_fcntl.assert_has_calls(
[self.fcntl_lock_call, self.fcntl_unlock_call],
[self.fcntl_lock_call, self.fcntl_unlock_call])
self.mock_fd.write.assert_called_once_with(self.buf)
self.mock_log.assert_called_once_with(
'%s locked; will try again (later)', self.path)
self.mock_sleep.assert_called_once_with(
dnsmasq._EXCLUSIVE_WRITE_ATTEMPTS_DELAY)
def test_write_would_block(self):
err = IOError('Oops!')
err.errno = errno.EWOULDBLOCK
# lock/unlock paired calls
self.mock_fcntl.side_effect = [
# first try
err, None,
# second try
None, None]
wrote = dnsmasq._exclusive_write_or_pass(self.path, self.buf)
self.assertTrue(wrote)
self.mock_open.assert_called_once_with(self.path, 'w', 1)
self.mock_fcntl.assert_has_calls(
[self.fcntl_lock_call, self.fcntl_unlock_call],
[self.fcntl_lock_call, self.fcntl_unlock_call])
self.mock_fd.write.assert_called_once_with(self.buf)
self.mock_log.assert_called_once_with(
'%s locked; will try again (later)', self.path)
self.mock_sleep.assert_called_once_with(
dnsmasq._EXCLUSIVE_WRITE_ATTEMPTS_DELAY)