def test_get_regions_explicit_master(self):
"""test get_regions with the paremeter target='master'"""
glancesync = GlanceSync(self.config)
result = glancesync.get_regions(target='master')
result.sort()
expected = ['Burgos']
expected.sort()
self.assertEquals(result, expected)
result = glancesync.get_regions(target='master',
omit_master_region=False)
result.sort()
expected = ['Burgos', 'Valladolid']
expected.sort()
self.assertEquals(result, expected)
def test_get_regions_other_target(self):
"""test get_regions with the paremeter target='other'"""
glancesync = GlanceSync(self.config)
result = glancesync.get_regions(target='other')
result.sort()
expected = ['other:Madrid', 'other:Region2']
expected.sort()
self.assertEquals(result, expected)
# omit_master_region does not affect a region different
# from master
result = glancesync.get_regions(target='other',
omit_master_region=False)
result.sort()
self.assertEquals(result, expected)
def test_get_regions_other_target(self):
"""test get_regions with the paremeter target='other'"""
glancesync = GlanceSync(self.config)
result = glancesync.get_regions(target='other')
result.sort()
expected = ['other:Madrid', 'other:Region2']
expected.sort()
self.assertEquals(result, expected)
# omit_master_region does not affect a region different
# from master
result = glancesync.get_regions(target='other',
omit_master_region=False)
result.sort()
self.assertEquals(result, expected)
def test_get_regions_explicit_master(self):
"""test get_regions with the paremeter target='master'"""
glancesync = GlanceSync(self.config)
result = glancesync.get_regions(target='master')
result.sort()
expected = ['Burgos']
expected.sort()
self.assertEquals(result, expected)
result = glancesync.get_regions(target='master',
omit_master_region=False)
result.sort()
expected = ['Burgos', 'Valladolid']
expected.sort()
self.assertEquals(result, expected)
def test_get_regions_include_master(self):
"""test get_regions with the paremeter to include master"""
glancesync = GlanceSync(self.config)
result = glancesync.get_regions(omit_master_region=False)
result.sort()
expected = ['Burgos', 'Valladolid']
expected.sort()
self.assertEquals(result, expected)
def test_get_regions(self):
"""test get_regions method"""
glancesync = GlanceSync(self.config)
result = glancesync.get_regions()
result.sort()
expected = ['Burgos']
expected.sort()
self.assertEquals(result, expected)
def test_get_regions_include_master(self):
"""test get_regions with the paremeter to include master"""
glancesync = GlanceSync(self.config)
result = glancesync.get_regions(omit_master_region=False)
result.sort()
expected = ['Burgos', 'Valladolid']
expected.sort()
self.assertEquals(result, expected)
def test_get_regions(self):
"""test get_regions method"""
glancesync = GlanceSync(self.config)
result = glancesync.get_regions()
result.sort()
expected = ['Burgos']
expected.sort()
self.assertEquals(result, expected)
class Sync(object):
def __init__(self, regions, override_d=None):
"""init object"""
GlanceSync.init_logs()
self.glancesync = GlanceSync(options_dict=override_d)
regions_expanded = list()
already_sorted = True
for region in regions:
if region.endswith(':'):
regions_expanded.extend(self.glancesync.get_regions(
target=region[:-1]))
already_sorted = False
else:
regions_expanded.append(region)
regions = regions_expanded
if not regions:
regions = self.glancesync.get_regions()
already_sorted = False
if not already_sorted:
regions_unsorted = regions
regions = list()
for region in self.glancesync.preferable_order:
if region in regions_unsorted:
regions.append(region)
regions_unsorted.remove(region)
regions.extend(regions_unsorted)
self.regions = regions
def report_status(self):
"""Report the synchronisation status of the regions"""
for region in self.regions:
try:
stream = StringIO.StringIO()
self.glancesync.export_sync_region_status(region, stream)
print(stream.getvalue())
except Exception:
# Don't do anything. Message has been already printed
# try next region
continue
def parallel_sync(self):
"""Run the synchronisation in several regions in parallel. The
synchronisation inside the region is sequential (i.e. several
regions are synchronised simultaneously, but only one image at time
is uploaded for each region)"""
max_children = self.glancesync.max_children
now = datetime.datetime.now()
datestr = str(now.year) + str(now.month).zfill(2) + \
str(now.day).zfill(2) + '_' + str(now.hour).zfill(2) +\
str(now.minute).zfill(2)
msg = '======Master is ' + self.glancesync.master_region
print(msg)
sys.stdout.flush()
os.mkdir('sync_' + datestr)
children = dict()
for region in self.regions:
try:
if len(children) >= max_children:
self._wait_child(children)
pid = os.fork()
if pid > 0:
children[pid] = region
continue
else:
path = os.path.join('sync_' + datestr, region + '.txt')
handler = logging.FileHandler(path)
handler.setFormatter(logging.Formatter('%(message)s'))
logger = self.glancesync.log
# Remove old handlers
for h in logger.handlers:
logger.removeHandler(h)
logger.addHandler(handler)
logger.setLevel(logging.INFO)
logger.propagate = 0
self.glancesync.sync_region(region)
# After a fork, os_exit() and not sys.exit() must be used.
os._exit(0)
except Exception:
raise
sys.stderr.flush()
sys.exit(-1)
while len(children) > 0:
self._wait_child(children)
print('All is done.')
def sequential_sync(self, dry_run=False):
"""Run the synchronisation sequentially (that is, do not start the
synchronisation to a region before the previous one was completed or
failed
:param dry_run: if true, do not synchronise images actually
"""
msg = '======Master is ' + self.glancesync.master_region
print(msg)
for region in self.regions:
try:
msg = "======" + region
print(msg)
sys.stdout.flush()
self.glancesync.sync_region(region, dry_run=dry_run)
except Exception:
# Don't do anything. Message has been already printed
# try next region
continue
def _wait_child(self, children):
""" Wait until one of the regions ends its synchronisation and then
print the result
:param children:
:return: a dictionary or regions, indexed by the pid of the process
"""
finish_direct_child = False
while not finish_direct_child:
(pid, status) = os.wait()
if pid not in children:
continue
else:
finish_direct_child = True
if status == 0:
msg = 'Region {0} has finished'.format(children[pid])
print(msg)
else:
msg = 'Region {0} has finished with errors'
print(msg.format(children[pid]))
del children[pid]
sys.stdout.flush()
def show_regions(self):
"""print a full list of the regions available (excluding the
master region) in all the targets defined in the configuration file"""
regions = self.glancesync.get_regions()
for target in self.glancesync.targets.keys():
if target == 'facade' or target == 'master':
continue
regions.extend(self.glancesync.get_regions(target=target))
print(' '.join(regions))
def make_backup(self):
"""make a backup of the metadata in the regions specified at the
constructor (in addition to the master region). The backup is created
in a directory named 'backup_glance_' with the date and time as suffix
There is a file for each region (the name is backup_<region>.csv) and
inside the file a line for each image.
Only the information about public images/ the images owned by
the tenant, can be obtained, regardless if the user is an admin. This
is a limitation of the glance API"""
now = datetime.datetime.now().isoformat()
directory = 'backup_glance_' + now
os.mkdir(directory)
regions = set(self.regions)
regions.add(self.glancesync.master_region)
for region in regions:
try:
self.glancesync.backup_glancemetadata_region(region, directory)
except Exception:
# do nothing. Already logged.
continue
