def main():
parser = OptionParser(usage=usage)
parser.add_option('--etc',
dest='etc',
default=DEFAULT_ETC,
help='Overrides /etc/swiftlm (for testing)')
parser.add_option('--input-vars',
dest='input_vars',
default=None,
help='The name of yaml containing vars')
parser.add_option('--builder-dir',
dest='builder_dir',
default=None,
help='Builder file directory')
parser.add_option('--osconfig',
dest='osconfig',
default=None,
help='Directory where drive size data files exist.'
' If omitted, the correct weights cannot'
' be assigned to drives.')
parser.add_option('--hosts',
dest='hosts',
default=None,
help='Hosts file (/etc/hosts or ./net/hosts.hf)')
parser.add_option('--swift-ring-builder-consumes',
dest='swift_ring_builder_consumes',
default=None,
help='File containing the SWF_RNG variable')
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('--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('--storage-policies',
dest='storage_policies',
default=False,
action="store_true",
help='Extract storage policy data.'
' Use this to register the storage_policies'
' variable.')
parser.add_option('--region-name',
dest='region_name',
default=None,
help='Region name for use with --storage-policies')
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.')
(options, args) = parser.parse_args()
if not options.input_vars:
options.input_vars = os.path.join(options.etc, DEFAULT_INPUT_VARS)
if not options.builder_dir:
options.builder_dir = os.path.join(options.etc, DEFAULT_BUILDER_DIR)
if not options.hosts:
options.hosts = os.path.join(options.etc, DEFAULT_HOSTS)
if not options.swift_ring_builder_consumes:
options.swift_ring_builder_consumes = os.path.join(
options.etc, DEFAULT_SWIFT_RING_BUILDER_CONSUMES)
if not options.ring_delta:
options.ring_delta = os.path.join(options.etc, DEFAULT_RING_DELTA)
if not options.osconfig:
options.osconfig = os.path.join(options.etc, DEFAULT_OSCONFIG)
#
# Work out what we need to do. Validate arguments needed by an action
# are present.
#
actions = []
if options.storage_policies:
actions.append('input-from-model')
actions.append('emit-storage-policies')
if not options.region_name:
print('Need --region-name')
sys.exit(1)
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 not options.ring_delta:
print('Need --ring-delta file to write to')
sys.exit(1)
if not (options.input_vars and options.hosts and options.osconfig
and options.swift_ring_builder_consumes):
print('Need --input-vars, --hosts and --osconfig and'
' --swift-ring-builder-consumes inputs')
sys.exit(1)
if not options.builder_dir:
print('Need --builder-dir option')
sys.exit(1)
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 not options.ring_delta:
print('Need --ring-delta file as input')
sys.exit(1)
if options.detail not in ['summary', 'full']:
print('Invalid value for --detail')
sys.exit(1)
if options.rebalance:
actions.append('init-delta')
actions.append('open-builder-dir')
actions.append('read-from-delta')
actions.append('rebalance')
if not options.ring_delta:
print('Need --ring-delta file as input')
sys.exit(1)
if options.fmt not in ['yaml', 'json']:
print('Invalid value for --format')
if len(actions) == 0:
print('Missing an option to perform some action')
sys.exit(1)
if options.storage_policies and (options.make_delta or options.rebalance
or options.report):
print('Do not mix --storage-policies with other actions')
sys.exit(1)
if options.report and (options.make_delta or options.rebalance
or options.storage_policies):
print('Do not mix --report with other actions')
sys.exit(1)
#
# Perform actions
#
if 'init-delta' in actions:
delta = RingDelta()
if 'input-from-model' in actions:
try:
input_model_fd = open(options.input_vars, 'r')
hosts_fd = open(options.hosts, 'r')
consumes_fd = open(options.swift_ring_builder_consumes, 'r')
except IOError as err:
print('ERROR: %s' % err)
sys.exit(1)
try:
input_vars = safe_load(input_model_fd)
consumes_model = safe_load(consumes_fd)
except scanner.ScannerError as err:
print('ERROR in %s: %s' % (options.input_vars, err))
sys.exit(err)
try:
input_model = InputModel(config=input_vars,
hosts_fd=hosts_fd,
consumes=consumes_model)
ring_model = RingSpecifications(model=input_vars)
except SwiftModelException as err:
sys.exit(err)
if 'emit-storage-policies' in actions:
obj_ring_policies = ring_model.get_storage_policies(
options.region_name)
print('%s' % safe_dump(obj_ring_policies, default_flow_style=False))
# Unlike the following actions, we exit after this action
sys.exit(0)
if 'open-builder-dir' or 'read-builder-dir' in actions:
try:
read_write = False
if 'read-builder-dir' in actions:
read_write = True
rings = RingBuilder(options.builder_dir, True)
except IOError as err:
print('ERROR: %s' % err)
sys.exit(1)
if 'open-osconfig-dir' in actions:
drive_configurations = osconfig_load(options.osconfig)
if 'make-delta' in actions:
try:
generate_delta(input_model, ring_model, rings,
drive_configurations, options, delta)
except SwiftModelException as err:
print('ERROR: %s' % err)
sys.exit(1)
if 'write-to-delta' in actions:
if options.ring_delta == '-':
write_to_file_fd = sys.stdout
else:
write_to_file_fd = open(options.ring_delta, 'w')
delta.write_to_file(write_to_file_fd, options.fmt)
if 'read-from-delta' in actions:
if options.ring_delta == '-':
print('--ring-delta=- is invalid (read from stdin not supported)')
sys.exit(1)
try:
delta = RingDelta()
read_from_delta_fd = open(options.ring_delta, 'r')
delta.read_from_file(read_from_delta_fd, options.fmt)
except IOError as err:
print('ERROR: %s' % err)
sys.exit(1)
if 'report' in actions:
print(delta.get_report(options.detail))
if 'rebalance' in actions:
rebalance(delta, rings, options.dry_run)
def main():
parser = OptionParser(usage=usage)
parser.add_option('--etc', dest='etc',
default=DEFAULT_ETC,
help='Overrides /etc/swiftlm (for testing)')
parser.add_option('--input-vars', dest='input_vars', default=None,
help='The name of yaml containing vars')
parser.add_option('--builder-dir', dest='builder_dir', default=None,
help='Builder file directory')
parser.add_option('--osconfig', dest='osconfig', default=None,
help='Directory where drive size data files exist.'
' If omitted, the correct weights cannot'
' be assigned to drives.')
parser.add_option('--hosts', dest='hosts', default=None,
help='Hosts file (/etc/hosts or ./net/hosts.hf)')
parser.add_option('--swift-ring-builder-consumes',
dest='swift_ring_builder_consumes',
default=None,
help='File containing the SWF_RNG variable')
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('--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('--storage-policies', dest='storage_policies',
default=False,
action="store_true",
help='Extract storage policy data.'
' Use this to register the storage_policies'
' variable.')
parser.add_option('--region-name', dest='region_name', default=None,
help='Region name for use with --storage-policies')
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.')
(options, args) = parser.parse_args()
if not options.input_vars:
options.input_vars = os.path.join(options.etc, DEFAULT_INPUT_VARS)
if not options.builder_dir:
options.builder_dir = os.path.join(options.etc, DEFAULT_BUILDER_DIR)
if not options.hosts:
options.hosts = os.path.join(options.etc, DEFAULT_HOSTS)
if not options.swift_ring_builder_consumes:
options.swift_ring_builder_consumes = os.path.join(
options.etc, DEFAULT_SWIFT_RING_BUILDER_CONSUMES)
if not options.ring_delta:
options.ring_delta = os.path.join(options.etc, DEFAULT_RING_DELTA)
if not options.osconfig:
options.osconfig = os.path.join(options.etc, DEFAULT_OSCONFIG)
#
# Work out what we need to do. Validate arguments needed by an action
# are present.
#
actions = []
if options.storage_policies:
actions.append('input-from-model')
actions.append('emit-storage-policies')
if not options.region_name:
print('Need --region-name')
sys.exit(1)
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 not options.ring_delta:
print('Need --ring-delta file to write to')
sys.exit(1)
if not (options.input_vars and options.hosts and
options.osconfig and options.swift_ring_builder_consumes):
print('Need --input-vars, --hosts and --osconfig and'
' --swift-ring-builder-consumes inputs')
sys.exit(1)
if not options.builder_dir:
print('Need --builder-dir option')
sys.exit(1)
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 not options.ring_delta:
print('Need --ring-delta file as input')
sys.exit(1)
if options.detail not in ['summary', 'full']:
print('Invalid value for --detail')
sys.exit(1)
if options.rebalance:
actions.append('init-delta')
actions.append('open-builder-dir')
actions.append('read-from-delta')
actions.append('rebalance')
if not options.ring_delta:
print('Need --ring-delta file as input')
sys.exit(1)
if options.fmt not in ['yaml', 'json']:
print('Invalid value for --format')
if len(actions) == 0:
print('Missing an option to perform some action')
sys.exit(1)
if options.storage_policies and (options.make_delta or
options.rebalance or
options.report):
print('Do not mix --storage-policies with other actions')
sys.exit(1)
if options.report and (options.make_delta or
options.rebalance or
options.storage_policies):
print('Do not mix --report with other actions')
sys.exit(1)
#
# Perform actions
#
if 'init-delta' in actions:
delta = RingDelta()
if 'input-from-model' in actions:
try:
input_model_fd = open(options.input_vars, 'r')
hosts_fd = open(options.hosts, 'r')
consumes_fd = open(options.swift_ring_builder_consumes, 'r')
except IOError as err:
print('ERROR: %s' % err)
sys.exit(1)
try:
input_vars = safe_load(input_model_fd)
consumes_model = safe_load(consumes_fd)
except scanner.ScannerError as err:
print('ERROR in %s: %s' % (options.input_vars, err))
sys.exit(err)
try:
input_model = InputModel(config=input_vars, hosts_fd=hosts_fd,
consumes=consumes_model)
ring_model = RingSpecifications(model=input_vars)
except SwiftModelException as err:
sys.exit(err)
if 'emit-storage-policies' in actions:
obj_ring_policies = ring_model.get_storage_policies(
options.region_name)
print('%s' % safe_dump(obj_ring_policies, default_flow_style=False))
# Unlike the following actions, we exit after this action
sys.exit(0)
if 'open-builder-dir' or 'read-builder-dir' in actions:
try:
read_write = False
if 'read-builder-dir' in actions:
read_write = True
rings = RingBuilder(options.builder_dir, True)
except IOError as err:
print('ERROR: %s' % err)
sys.exit(1)
if 'open-osconfig-dir' in actions:
drive_configurations = osconfig_load(options.osconfig)
if 'make-delta' in actions:
try:
generate_delta(input_model, ring_model, rings,
drive_configurations, options, delta)
except SwiftModelException as err:
print('ERROR: %s' % err)
sys.exit(1)
if 'write-to-delta' in actions:
if options.ring_delta == '-':
write_to_file_fd = sys.stdout
else:
write_to_file_fd = open(options.ring_delta, 'w')
delta.write_to_file(write_to_file_fd, options.fmt)
if 'read-from-delta' in actions:
if options.ring_delta == '-':
print('--ring-delta=- is invalid (read from stdin not supported)')
sys.exit(1)
try:
delta = RingDelta()
read_from_delta_fd = open(options.ring_delta, 'r')
delta.read_from_file(read_from_delta_fd, options.fmt)
except IOError as err:
print('ERROR: %s' % err)
sys.exit(1)
if 'report' in actions:
print(delta.get_report(options.detail))
if 'rebalance' in actions:
rebalance(delta, rings, options.dry_run)
def test_storage_policies(self):
ring_model = RingSpecifications(model=safe_load(ringspec_simple))
sp = ring_model.get_storage_policies('region1')
self.assertEquals(sp['storage_policies'][0]['policy']['index'], 0)