def crawl(self, container_id, avoid_setns=False, **kwargs):
container = DockerContainer(container_id)
used = buffered = cached = free = 'unknown'
with open(container.get_memory_cgroup_path('memory.stat'
), 'r') as f:
for line in f:
(key, value) = line.strip().split(' ')
if key == 'total_cache':
cached = int(value)
if key == 'total_active_file':
buffered = int(value)
with open(container.get_memory_cgroup_path(
'memory.limit_in_bytes'), 'r') as f:
limit = int(f.readline().strip())
with open(container.get_memory_cgroup_path(
'memory.usage_in_bytes'), 'r') as f:
used = int(f.readline().strip())
host_free = psutil.virtual_memory().free
container_total = used + min(host_free, limit - used)
free = container_total - used
if 'unknown' not in [used, free] and (free + used) > 0:
util_percentage = float(used) / (free + used) * 100.0
else:
util_percentage = 'unknown'
return [('memory', MemoryFeature(used, buffered,
cached, free, util_percentage),
'memory')]
def crawl(self, container_id, avoid_setns=False, **kwargs):
container = DockerContainer(container_id)
used = buffered = cached = free = 'unknown'
with open(container.get_memory_cgroup_path('memory.stat'), 'r') as f:
for line in f:
(key, value) = line.strip().split(' ')
if key == 'total_cache':
cached = int(value)
if key == 'total_active_file':
buffered = int(value)
with open(container.get_memory_cgroup_path('memory.limit_in_bytes'),
'r') as f:
limit = int(f.readline().strip())
with open(container.get_memory_cgroup_path('memory.usage_in_bytes'),
'r') as f:
used = int(f.readline().strip())
host_free = psutil.virtual_memory().free
container_total = used + min(host_free, limit - used)
free = container_total - used
if 'unknown' not in [used, free] and (free + used) > 0:
util_percentage = float(used) / (free + used) * 100.0
else:
util_percentage = 'unknown'
return [('memory',
MemoryFeature(used, buffered, cached, free,
util_percentage), 'memory')]
def _test_non_implemented_methods(self):
c = DockerContainer("some_id")
with self.assertRaises(NotImplementedError):
c.get_memory_cgroup_path()
with self.assertRaises(NotImplementedError):
c.get_cpu_cgroup_path()
with self.assertRaises(NotImplementedError):
c.link_logfiles()
with self.assertRaises(NotImplementedError):
c.unlink_logfiles()
def _test_non_implemented_methods(self):
c = DockerContainer("some_id")
with self.assertRaises(NotImplementedError):
c.get_memory_cgroup_path()
with self.assertRaises(NotImplementedError):
c.get_cpu_cgroup_path()
with self.assertRaises(NotImplementedError):
c.link_logfiles()
with self.assertRaises(NotImplementedError):
c.unlink_logfiles()
def test_memory_cgroup(
self,
mocked_ismount,
mock_get_rootfs,
mock_inspect,
mocked_get_runtime_env,
mocked_dockerps):
c = DockerContainer("good_id")
assert c.get_memory_cgroup_path(
'abc') == '/cgroup/memory/docker/good_id/abc'
def test_memory_cgroup(self, mocked_ismount, mock_get_rootfs, mock_inspect,
mocked_get_runtime_env, mocked_dockerps):
c = DockerContainer("good_id")
assert c.get_memory_cgroup_path(
'abc') == '/cgroup/memory/docker/good_id/abc'
