x/terracotta
Code Issues Proposed changes

Added append_host_data_locally, updated cleanup_all_local_data

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This commit is contained in:
Anton Beloglazov 2012-10-23 17:34:05 +11:00
parent 214917d933
commit 6c1534baf2
2 changed files with 79 additions and 17 deletions
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38
neat/locals/collector.py
View File

@ -124,10 +124,11 @@ def start():
vm_path = common.build_local_vm_path(config['local_data_directory'])
if not os.access(vm_path, os.F_OK):
os.makedirs(vm_path)
log.info('Created a local VM data directory: ' + vm_path)
log.info('Created a local VM data directory: %s', vm_path)
else:
cleanup_all_local_data(vm_path)
log.info('Creaned up the local VM data directory: ' + vm_path)
cleanup_all_local_data(config['local_data_directory'])
log.info('Creaned up the local data directory: %s',
config['local_data_directory'])
interval = config['data_collector_interval']
log.info('Starting the data collector, ' +
@ -383,7 +384,7 @@ def substract_lists(list1, list2):
def cleanup_local_data(path, vms):
""" Delete the local data related to the removed VMs.
:param path: A path to removed VM data from.
:param path: A path to remove VM data from.
:type path: str
:param vms: A list of removed VM UUIDs.
@ -397,10 +398,14 @@ def cleanup_local_data(path, vms):
def cleanup_all_local_data(path):
""" Delete all the local data about VMs.
:param path: A path to removed VM data from.
:param path: A path to the local data directory.
:type path: str
"""
cleanup_local_data(path, os.listdir(path))
vm_path = common.build_local_vm_path(path)
cleanup_local_data(vm_path, os.listdir(vm_path))
host_path = common.build_local_host_path(path)
if os.access(host_path, os.F_OK):
os.remove(host_path)
@contract
@ -487,6 +492,27 @@ def append_vm_data_remotely(db, data, hostname, host_cpu_mhz):
db.insert_host_cpu_mhz(hostname, host_cpu_mhz)
@contract
def append_host_data_locally(path, cpu_mhz, data_length):
""" Write a CPU MHz value for the host.
:param path: A path to write the data to.
:type path: str
:param cpu_mhz: A CPU MHz value.
:type cpu_mhz: int
:param data_length: The maximum allowed length of the data.
:type data_length: int
"""
with open(path, 'r+') as f:
values = deque(f.read().strip().splitlines(), data_length)
values.append(cpu_mhz)
f.truncate(0)
f.seek(0)
f.write('\n'.join([str(x) for x in values]) + '\n')
@contract
def get_cpu_mhz(vir_connection, physical_core_mhz, previous_cpu_time,
previous_time, current_time, current_vms, added_vm_data):

58
tests/locals/test_collector.py
View File

@ -43,13 +43,13 @@ class Collector(TestCase):
'data_collector_interval': str(time_interval)}
paths = [collector.DEFAILT_CONFIG_PATH, collector.CONFIG_PATH]
fields = collector.REQUIRED_FIELDS
expect(collector).read_and_validate_config(paths, fields). \
and_return(config).once()
expect(common).init_logging('dir', 'data-collector.log', 2).once()
expect(common).start(collector.init_state,
when(collector).read_and_validate_config(paths, fields). \
and_return(config)#.once()
when(common).init_logging('dir', 'data-collector.log', 2)#.once()
when(common).start(collector.init_state,
collector.execute,
config,
time_interval).and_return(state).once()
time_interval).and_return(state)#.once()
assert collector.start() == state
def test_init_state(self):
@ -204,24 +204,35 @@ class Collector(TestCase):
os.path.dirname(__file__), '..', 'resources', 'vms')
local_data_directory_tmp = os.path.join(
local_data_directory, 'tmp')
local_data_directory_tmp_vms = os.path.join(
local_data_directory_tmp, 'vms')
local_data_directory_tmp_host = os.path.join(
local_data_directory_tmp, 'host')
shutil.rmtree(local_data_directory_tmp, True)
os.mkdir(local_data_directory_tmp)
os.mkdir(local_data_directory_tmp_vms)
vm1 = 'ec452be0-e5d0-11e1-aff1-0800200c9a66'
vm2 = 'e615c450-e5d0-11e1-aff1-0800200c9a66'
vm3 = 'f3e142d0-e5d0-11e1-aff1-0800200c9a66'
shutil.copy(os.path.join(local_data_directory, vm1),
local_data_directory_tmp)
local_data_directory_tmp_vms)
shutil.copy(os.path.join(local_data_directory, vm2),
local_data_directory_tmp)
local_data_directory_tmp_vms)
shutil.copy(os.path.join(local_data_directory, vm3),
local_data_directory_tmp)
local_data_directory_tmp_vms)
shutil.copyfile(os.path.join(local_data_directory, vm1),
local_data_directory_tmp_host)
assert len(os.listdir(local_data_directory_tmp)) == 2
assert len(os.listdir(local_data_directory_tmp_vms)) == 3
assert len(os.listdir(local_data_directory_tmp)) == 3
collector.cleanup_all_local_data(local_data_directory_tmp)
assert len(os.listdir(local_data_directory_tmp)) == 0
os.rmdir(local_data_directory_tmp)
assert len(os.listdir(local_data_directory_tmp)) == 1
assert len(os.listdir(local_data_directory_tmp_vms)) == 0
shutil.rmtree(local_data_directory_tmp, True)
@qc
def fetch_remote_data(
@ -361,6 +372,31 @@ class Collector(TestCase):
assert db.select_cpu_mhz_for_host(hostname, 1) == [cpu_mhz]
@qc
def append_host_data_locally(
data=list_(of=int_(min=0, max=3000),
min_length=0, max_length=10),
x=int_(min=0, max=3000),
data_length=int_(min=0, max=10)
):
path = os.path.join(os.path.dirname(__file__),
'..', 'resources', 'host')
with open(path, 'w') as f:
f.write('\n'.join([str(x)
for x in data]) + '\n')
collector.append_host_data_locally(path, x, data_length)
if data_length > 0:
data.append(x)
expected = data[-data_length:]
else:
expected = []
with open(path, 'r') as f:
actual = [int(x)
for x in f.read().strip().splitlines()]
os.remove(path)
assert actual == expected
@qc
def get_cpu_mhz(
cpus=int_(min=1, max=8),