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# -*- coding: utf-8 -*-
import argparse
import json
import logging
import sys
from ceph.deployment.drive_group import DriveGroupSpec
from ceph.deployment.drive_selection.selector import DriveSelection
from ceph.deployment.translate import to_ceph_volume
from ceph.deployment.inventory import Device
from ceph_volume.inventory import Inventory
from ceph_volume.devices.lvm.batch import Batch
logger = logging.getLogger(__name__)
class Deploy(object):
help = '''
Deploy OSDs according to a drive groups specification.
The DriveGroup specification must be passed in json.
It can either be (preference in this order)
- in a file, path passed as a positional argument
- read from stdin, pass "-" as a positional argument
- a json string passed via the --spec argument
Either the path postional argument or --spec must be specifed.
'''
def __init__(self, argv):
self.argv = argv
def main(self):
parser = argparse.ArgumentParser(
prog='ceph-volume drive-group',
formatter_class=argparse.RawDescriptionHelpFormatter,
description=self.help,
)
parser.add_argument(
'path',
nargs='?',
default=None,
help=('Path to file containing drive group spec or "-" to read from stdin'),
)
parser.add_argument(
'--spec',
default='',
nargs='?',
help=('drive-group json string')
)
parser.add_argument(
'--dry-run',
default=False,
action='store_true',
help=('dry run, only print the batch command that would be run'),
)
self.args = parser.parse_args(self.argv)
if self.args.path:
if self.args.path == "-":
commands = self.from_json(sys.stdin)
else:
with open(self.args.path, 'r') as f:
commands = self.from_json(f)
elif self.args.spec:
dg = json.loads(self.args.spec)
commands = self.get_dg_spec(dg)
else:
# either --spec or path arg must be specified
parser.print_help(sys.stderr)
sys.exit(0)
cmd = commands.run()
if not cmd:
logger.error('DriveGroup didn\'t produce any commands')
return
if self.args.dry_run:
logger.info('Returning ceph-volume command (--dry-run was passed): {}'.format(cmd))
print(cmd)
else:
logger.info('Running ceph-volume command: {}'.format(cmd))
batch_args = cmd.split(' ')[2:]
b = Batch(batch_args)
b.main()
def from_json(self, file_):
dg = {}
dg = json.load(file_)
return self.get_dg_spec(dg)
def get_dg_spec(self, dg):
dg_spec = DriveGroupSpec._from_json_impl(dg)
dg_spec.validate()
i = Inventory(['--filter-for-batch'])
i.main()
inventory = i.get_report()
devices = [Device.from_json(i) for i in inventory]
selection = DriveSelection(dg_spec, devices)
return to_ceph_volume(selection)
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