mirror of
https://github.com/ceph/ceph
synced 2024-12-25 21:03:31 +00:00
a9df9e088d
A more generic CephTestCase and CephCluster, for writeing non-cephfs test cases. This avoids overloading one class with the functionality needed by lots of different subsystems. Signed-off-by: John Spray <john.spray@redhat.com>
137 lines
4.6 KiB
Python
137 lines
4.6 KiB
Python
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import unittest
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import time
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import logging
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from teuthology.orchestra.run import CommandFailedError
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log = logging.getLogger(__name__)
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class CephTestCase(unittest.TestCase):
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"""
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For test tasks that want to define a structured set of
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tests implemented in python. Subclass this with appropriate
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helpers for the subsystem you're testing.
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"""
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# Environment references
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mounts = None
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fs = None
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mds_cluster = None
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mgr_cluster = None
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ctx = None
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mon_manager = None
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def assert_cluster_log(self, expected_pattern, invert_match=False, timeout=10):
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"""
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Context manager. Assert that during execution, or up to 5 seconds later,
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the Ceph cluster log emits a message matching the expected pattern.
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:param expected_pattern: a string that you expect to see in the log output
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"""
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ceph_manager = self.fs.mon_manager
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class ContextManager(object):
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def match(self):
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found = expected_pattern in self.watcher_process.stdout.getvalue()
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if invert_match:
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return not found
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return found
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def __enter__(self):
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self.watcher_process = ceph_manager.run_ceph_w()
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def __exit__(self, exc_type, exc_val, exc_tb):
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if not self.watcher_process.finished:
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# Check if we got an early match, wait a bit if we didn't
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if self.match():
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return
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else:
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log.debug("No log hits yet, waiting...")
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# Default monc tick interval is 10s, so wait that long and
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# then some grace
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time.sleep(5 + timeout)
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self.watcher_process.stdin.close()
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try:
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self.watcher_process.wait()
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except CommandFailedError:
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pass
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if not self.match():
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log.error("Log output: \n{0}\n".format(self.watcher_process.stdout.getvalue()))
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raise AssertionError("Expected log message not found: '{0}'".format(expected_pattern))
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return ContextManager()
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def wait_for_health(self, pattern, timeout):
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"""
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Wait until 'ceph health' contains messages matching the pattern
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"""
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def seen_health_warning():
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health = self.fs.mon_manager.get_mon_health()
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summary_strings = [s['summary'] for s in health['summary']]
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if len(summary_strings) == 0:
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log.debug("Not expected number of summary strings ({0})".format(summary_strings))
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return False
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else:
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for ss in summary_strings:
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if pattern in ss:
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return True
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log.debug("Not found expected summary strings yet ({0})".format(summary_strings))
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return False
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self.wait_until_true(seen_health_warning, timeout)
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def wait_for_health_clear(self, timeout):
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"""
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Wait until `ceph health` returns no messages
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"""
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def is_clear():
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health = self.fs.mon_manager.get_mon_health()
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return len(health['summary']) == 0
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self.wait_until_true(is_clear, timeout)
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def wait_until_equal(self, get_fn, expect_val, timeout, reject_fn=None):
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period = 5
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elapsed = 0
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while True:
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val = get_fn()
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if val == expect_val:
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return
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elif reject_fn and reject_fn(val):
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raise RuntimeError("wait_until_equal: forbidden value {0} seen".format(val))
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else:
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if elapsed >= timeout:
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raise RuntimeError("Timed out after {0} seconds waiting for {1} (currently {2})".format(
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elapsed, expect_val, val
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))
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else:
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log.debug("wait_until_equal: {0} != {1}, waiting...".format(val, expect_val))
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time.sleep(period)
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elapsed += period
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log.debug("wait_until_equal: success")
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def wait_until_true(self, condition, timeout):
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period = 5
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elapsed = 0
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while True:
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if condition():
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return
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else:
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if elapsed >= timeout:
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raise RuntimeError("Timed out after {0} seconds".format(elapsed))
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else:
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log.debug("wait_until_true: waiting...")
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time.sleep(period)
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elapsed += period
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log.debug("wait_until_true: success")
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