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#!/usr/bin/python
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#
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# Copyright (C) 2006, 2007 Google Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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import sys
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from optparse import make_option
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from ganeti.cli import *
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from ganeti import cmdlib
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from ganeti import opcodes
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from ganeti import constants
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def PrintExportList(opts, args):
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  """Prints a list of all the exported system images.
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  Args:
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   opts - class with options as members (should be empty)
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   args - should be empty
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  Returns:
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    nothing
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  """
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  op = opcodes.OpQueryExports(nodes=opts.nodes)
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  exports = SubmitOpCode(op)
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  for node in exports:
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    print ("Node: %s" % node)
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    print ("Exports:")
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    for instance_name in exports[node]:
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      print ("\t%s" % instance_name)
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def ExportInstance(opts, args):
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  """Export an instance to an image in the cluster.
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  Args:
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   opts - class with options as members
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   args - list with a single element, the instance name
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  Returns:
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    1 in case of error, 0 otherwise
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  """
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  op = opcodes.OpExportInstance(instance_name=args[0],
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                                target_node=opts.node,
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                                shutdown=opts.shutdown)
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  SubmitOpCode(op)
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def ImportInstance(opts, args):
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  """Add an instance to the cluster.
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  Args:
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   opts - class with options as members
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   args - list with a single element, the new instance name
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  Opts used:
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   memory - amount of memory to allocate to instance (MiB)
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   size - amount of disk space to allocate to instance (MiB)
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   os - which OS to run on instance
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   node - node to run new instance on
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   src_node - node containing the export
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   src_dir - directory on the old node with the export in it
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  Returns:
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    1 in case of error, 0 otherwise
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  """
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  instance = args[0]
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  (pnode, snode) = SplitNodeOption(opts.node)
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  op = opcodes.OpCreateInstance(instance_name=instance, mem_size=opts.mem,
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                                disk_size=opts.size, swap_size=opts.swap,
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                                disk_template=opts.disk_template,
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                                mode=constants.INSTANCE_IMPORT,
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                                pnode=pnode, snode=snode,
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                                vcpus=opts.vcpus, ip_check=opts.ip_check,
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                                ip=opts.ip, bridge=opts.bridge, start=False,
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                                src_node=opts.src_node, src_path=opts.src_dir,
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                                wait_for_sync=opts.wait_for_sync)
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  SubmitOpCode(op)
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  return 0
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# this is defined separately due to readability only
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import_opts = [
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  DEBUG_OPT,
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  make_option("-n", "--node", dest="node",
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              help="Target node and optional secondary node",
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              metavar="<pnode>[:<snode>]"),
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  cli_option("-s", "--os-size", dest="size", help="Disk size",
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             default=20 * 1024, type="unit", metavar="<size>"),
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  cli_option("--swap-size", dest="swap", help="Swap size",
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             default=4 * 1024, type="unit", metavar="<size>"),
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  cli_option("-m", "--memory", dest="mem", help="Memory size",
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             default=128, type="unit", metavar="<mem>"),
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  make_option("-p", "--cpu", dest="vcpus", help="Number of virtual CPUs",
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              default=1, type="int", metavar="<PROC>"),
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  make_option("-t", "--disk-template", dest="disk_template",
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              help="Custom disk setup (diskless, plain, local_raid1 or"
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              " remote_raid1)", default=None, metavar="TEMPL"),
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  make_option("-i", "--ip", dest="ip",
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              help="IP address ('none' [default], 'auto', or specify address)",
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              default='none', type="string", metavar="<ADDRESS>"),
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  make_option("--no-wait-for-sync", dest="wait_for_sync", default=True,
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              action="store_false", help="Don't wait for sync (DANGEROUS!)"),
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  make_option("-b", "--bridge", dest="bridge",
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              help="Bridge to connect this instance to",
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              default=None, metavar="<bridge>"),
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  make_option("--src-node", dest="src_node", help="Source node",
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              metavar="<node>"),
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  make_option("--src-dir", dest="src_dir", help="Source directory",
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              metavar="<dir>"),
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  make_option("--no-ip-check", dest="ip_check", default=True,
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              action="store_false", help="Don't check that the instance's IP"
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              " is alive"),
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  ]
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commands = {
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  'list': (PrintExportList, ARGS_NONE,
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           [DEBUG_OPT,
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            make_option("--node", dest="node", default=[], action="append",
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                        help="List only backups stored on this node"
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                             " (can be used multiple times)"),
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            ],
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           "", "Lists instance exports available in the ganeti cluster"),
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  'export': (ExportInstance, ARGS_ONE,
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             [DEBUG_OPT, FORCE_OPT,
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              make_option("-n", "--node", dest="node", help="Target node",
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                          metavar="<node>"),
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              make_option("","--noshutdown", dest="shutdown",
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                          action="store_false", default=True,
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                          help="Don't shutdown the instance (unsafe)"), ],
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             "[opts...] <name>",
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             "Exports an instance to an image"),
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  'import': (ImportInstance, ARGS_ONE, import_opts, "[opts...] <name>",
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             "Imports an instance from an exported image"),
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  }
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if __name__ == '__main__':
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  sys.exit(GenericMain(commands))