def test_missing_ring_specification(self):
options = DummyInputOptions()
config_paths = CloudMultiSite(options)
input_model = ServersModel('standard', 'ccp',
config=safe_load(standard_input_model),
consumes_model=standard_swf_rng_consumes)
# Change the disk model so a bad ring name is referenced
for server in input_model.servers:
disk_model = server.get('disk_model')
for device_group in disk_model.get('device_groups', []):
consumer = device_group.get('consumer')
if consumer and consumer.get('name', 'other') == 'swift':
attrs = consumer.get('attrs')
attrs.get('rings').append({'name': 'object-99'})
ring_model = RingSpecifications('standard', 'ccp',
model=None)
ring_model.load_configuration('standard', 'ccp',
safe_load(standard_configuration_data))
rings = RingBuilder(self.builder_dir, False)
drive_configurations = dummy_osconfig_load(
standard_drive_configurations)
delta = RingDelta()
try:
generate_delta(config_paths, input_model, ring_model, rings,
drive_configurations, options, delta)
self.assertTrue(False, msg='should not get here')
except SwiftModelException as err:
self.assertTrue('Cannot proceed' in str(err))
def test_build_rings(self):
options = DummyInputOptions()
config_paths = CloudMultiSite(options)
input_model = ServersModel('standard', 'ccp',
config=safe_load(standard_input_model),
consumes_model=standard_swf_rng_consumes)
# Use rings from configuration-data object
ring_model = RingSpecifications('standard', 'ccp',
model=None)
ring_model.load_configuration('standard', 'ccp',
safe_load(standard_configuration_data))
rings = RingBuilder(self.builder_dir, False)
drive_configurations = dummy_osconfig_load(
standard_drive_configurations)
delta = RingDelta()
generate_delta(config_paths, input_model, ring_model, rings,
drive_configurations, options, delta)
options.dry_run = True
# Validate pretend has no effect since all rings are new
options.pretend_min_part_hours_passed = True
cmds = rebalance(delta, rings, options)
assert_cmds_are_same(self, expected_cmds, cmds)
def main():
parser = OptionParser(usage=usage)
parser.add_option('--etc',
dest='etc',
default=DEFAULT_ETC,
help='Overrides /etc/swiftlm (for testing)')
parser.add_option('--cloud',
dest='cloud',
default=None,
help='The name of the cloud')
parser.add_option('--control-plane',
dest='control_plane',
default=None,
help='The name of the control plane')
parser.add_option('--ring-delta',
dest='ring_delta',
default=None,
help='Name of ring-delta file (as output or input'
' A value of "-" (on output means to write'
' to stdout')
parser.add_option('--format',
dest='fmt',
default='yaml',
help='One of yaml or json.'
' When used with --ring-delta, specifies the'
' format of the file.')
parser.add_option('--detail',
dest='detail',
default='summary',
help='Level of detail to use with --report.'
' Use summary or full')
parser.add_option('--report',
dest='report',
default=False,
action="store_true",
help='Explain what the ring delta represents.'
' Optionally use --detail.')
parser.add_option('--dry-run',
dest='dry_run',
default=False,
action="store_true",
help='Show the proposed swift-ring-builder commands')
parser.add_option('--pretend-min-part-hours-passed',
dest='pretend_min_part_hours_passed',
default=False,
action="store_true",
help='Executes the pretend_min_part_hours_passed command'
' on each ring before running rebalance.'
' Use with caution.')
parser.add_option('--make-delta',
dest='make_delta',
default=False,
action="store_true",
help='Make a ring delta file')
parser.add_option('--rebalance',
dest='rebalance',
default=False,
action="store_true",
help='Build (or rebalance) rings')
parser.add_option('--limit-ring',
dest='limit_ring',
default=None,
help='Limits actions to given ring')
parser.add_option('--size-to-weight',
dest='size_to_weight',
default=float(1024 * 1024 * 1024),
help='Conversion factor for size to weight. Default is'
' 1GB is weight of 1 (a 4Tb drive would be assigned'
' a weight of 4096')
parser.add_option('--weight-step',
dest='weight_step',
default=None,
help='When set, weights are changed by at most this'
' value. Overrides value in ring specification.')
parser.add_option('--allow-partitions',
dest='allow_partitions',
default=False,
action='store_true',
help='Allow devices to be assigned to partitions.'
' Default is to use a full disk drive.')
parser.add_option('--stop-on-warnings',
dest='stop_on_warnings',
default=False,
action='store_true',
help='Used with --make-delta. Exit with error if there'
' are model missmatch warnings.'
' Default is to only exit with error for errors.')
parser.add_option('--unittest',
dest='unittest',
default=False,
action='store_true',
help='Set by unittests. Never set on command line.')
(options, args) = parser.parse_args()
if not (options.cloud and options.control_plane):
sys.exit('Must specify both --cloud and --control_plane')
sites = CloudMultiSite(options)
my_cloud = sites.my_cloud
my_control_plane = sites.my_control_plane
my_config = sites.path(my_cloud, my_control_plane)
#
# Work out what we need to do. Validate arguments needed by an action
# are present.
#
actions = []
if options.make_delta:
actions.append('init-delta')
actions.append('input-from-model')
actions.append('read-builder-dir')
actions.append('open-osconfig-dir')
actions.append('make-delta')
actions.append('write-to-delta')
if options.fmt not in ['yaml', 'json']:
print('Invalid value for --format')
if options.report:
actions.append('init-delta')
actions.append('read-from-delta')
actions.append('report')
if options.detail not in ['summary', 'full']:
sys.exit('Invalid value for --detail')
if options.rebalance:
actions.append('init-delta')
actions.append('open-builder-dir')
actions.append('read-from-delta')
actions.append('rebalance')
if options.fmt not in ['yaml', 'json']:
print('Invalid value for --format')
if len(actions) == 0:
sys.exit('Missing an option to perform some action')
if options.report and (options.make_delta or options.rebalance):
sys.exit('Do not mix --report with other actions')
#
# Perform actions
#
if 'init-delta' in actions:
delta = RingDelta()
if 'input-from-model' in actions:
servers_model = ServersModel('unused', 'unused')
consumes = Consumes()
ring_model = RingSpecifications(my_cloud, my_control_plane)
for cloud, control_plane in sites.control_planes():
config = sites.path(cloud, control_plane)
input_model_fd = None
try:
input_model_fd = open(config.get('input-model'), 'r')
except IOError as err:
pass # File may not exist since its a legacy item
try:
cp_server_fd = None
cp_server_fd = open(config.get('control_plane_servers'), 'r')
except IOError as err:
sys.exit('Error on control_plane_server.yml: %s' % err)
try:
control_plane_servers = None
if cp_server_fd:
control_plane_servers = safe_load(cp_server_fd)
except scanner.ScannerError as err:
sys.exit('ERROR reading/parsing: %s' % err)
try:
consumes_fd = open(config.get('swift_ring_builder_consumes'),
'r')
except IOError as err:
sys.exit('ERROR: %s' % err)
try:
input_vars = {'global': {}}
if input_model_fd:
input_vars = safe_load(input_model_fd)
consumes_model = safe_load(consumes_fd)
except scanner.ScannerError as err:
sys.exit('ERROR reading/parsing: %s' % err)
try:
if control_plane_servers:
servers = control_plane_servers.get(
'control_plane_servers')
elif input_vars.get('global').get('all_servers'):
servers = input_vars.get('global').get('all_servers')
else:
sys.exit('No servers found in control plane')
servers_model.add_servers(cloud, control_plane, servers)
consumes.load_model(consumes_model)
except SwiftModelException as err:
sys.exit(err)
servers_model.register_consumes(consumes)
try:
config_data_fd = open(my_config.get('configuration_data'), 'r')
config_data = safe_load(config_data_fd)
except (IOError, scanner.ScannerError) as err:
sys.exit('Rings should be in configuration-data.'
' Using old configuration processor?')
try:
rings_loaded = False
if input_vars.get('global').get('all_ring_specifications'):
# Model contains Ardana old-style rings
ring_model = RingSpecifications(my_cloud,
my_control_plane,
model=input_vars)
rings_loaded = True
if config_data and config_data.get(
'control_plane_rings',
config_data.get('control-plane-rings')):
# Model contains new-style rings --- use instead
ring_model.load_configuration(my_cloud, my_control_plane,
config_data)
rings_loaded = True
if not rings_loaded:
sys.exit('No ring specifications in input model')
except SwiftModelException as err:
sys.exit(err)
if 'open-builder-dir' or 'read-builder-dir' in actions:
try:
read_rings = False
if 'read-builder-dir' in actions:
read_rings = True
rings = RingBuilder(my_config.get('builder_dir'),
read_rings=read_rings)
except IOError as err:
sys.exit('ERROR: %s' % err)
if 'open-osconfig-dir' in actions:
drive_configurations = osconfig_load(sites)
if 'make-delta' in actions:
try:
generate_delta(sites, servers_model, ring_model, rings,
drive_configurations, options, delta)
except SwiftModelException as err:
sys.exit('ERROR: %s' % err)
if 'write-to-delta' in actions:
if my_config.get('ring-delta') == '-':
write_to_file_fd = sys.stdout
else:
write_to_file_fd = open(my_config.get('ring-delta'), 'w')
delta.write_to_file(write_to_file_fd, options.fmt)
if 'read-from-delta' in actions:
if my_config.get('ring-delta') == '-':
sys.exit('--ring-delta- is invalid (read from stdin'
'not supported)')
try:
delta = RingDelta()
read_from_delta_fd = open(my_config.get('ring-delta'), 'r')
delta.read_from_file(read_from_delta_fd, options.fmt)
except IOError as err:
sys.exit('ERROR: %s' % err)
if 'report' in actions:
print(delta.get_report(options))
if 'rebalance' in actions:
rebalance(delta, rings, options)
