def run(self, variables):
os_name = platform.system()
if os_name != "Linux":
return
# Critical memory-in-use threshold %
CRITICAL_THRESH = 90
meminfo = self.get_meminfo()
act_free = meminfo['MemFree'] + meminfo['Buffers'] + meminfo['Cached']
used = meminfo['MemTotal'] - act_free
perc_used = (used / meminfo['MemTotal']) * 100
out, err, return_code = self.shell_call(
common_path(['/usr/bin/dmesg', '/bin/dmesg']))
if perc_used >= CRITICAL_THRESH or 'oom-killer' in out:
res = 'High Memory Use!\nMemTotal: {0:.0f} kib\nUsed: {1:.0f} kib ({2:.0f}%)'.format(
meminfo['MemTotal'], used, perc_used)
if 'oom-killer' in out:
res = res + '\n\noom-killer present in dmesg | tail!\n{}'.format(
self.get_ooms(out))
return res
def _getdmesgoutput(self, start_time=None, end_time=None):
result = []
out, err, returncode = self.shell_call(common_path(['/usr/bin/dmesg', '/bin/dmesg']), stream=True)
boot_time = self._get_boot_time()
dmesg_pattern = re.compile('\[(.*?)\] (.*)')
for line in out:
m = dmesg_pattern.match(line)
dmesg_time = m.group(1).strip()
timestamp = boot_time + float(dmesg_time)
if iswithintimerange(timestamp, start_time, end_time):
message = m.group(2)
dt = datetime.fromtimestamp(timestamp)
date_str = dt.strftime('%Y/%m/%d %H:%M:%S')
result.append(' '.join([date_str, message]))
if result:
result.reverse()
return '\n'.join(result)
def test_common_path_is_not_found():
'''Assert that the binary is not present the filesystem.'''
with patch('os.path.isfile', return_value=False):
with pytest.raises(FileNotFoundError):
common_path(['amiga/1200/GuruMeditationError'])
def test_common_path_found():
'''Assert that the binary is found on the filesystem.'''
with patch('os.path.isfile', return_value=True):
assert common_path(['/usr/bin/dmesg',
'/bin/dmesg']) == '/usr/bin/dmesg'