Synnefo » snf-ganeti » ganeti-local

#!/usr/bin/python

#

# Copyright (C) 2006, 2007 Google Inc.

#

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful, but

# WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

# General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

# 02110-1301, USA.

import sys

from optparse import make_option

from ganeti.cli import *

from ganeti import opcodes

from ganeti import logger

from ganeti import objects

from ganeti import utils

from ganeti import errors

def ListOS(opts, args):

  """List the OSes existing on this node.

  """

  op = opcodes.OpDiagnoseOS()

  result = SubmitOpCode(op)

  if not result:

    logger.ToStdout("Can't get the OS list")

    return 1

  # filter non-valid OS-es

  oses = {}

  for node_name in result:

    oses[node_name] = [obj for obj in result[node_name]

                       if isinstance(obj, objects.OS)]

  # Get intersection of all OSes

  fnode = oses.keys()[0]

  os_set = set([os_inst.name for os_inst in oses[fnode]])

  del oses[fnode]

  for node in oses:

    os_set &= set([os_inst.name for os_inst in oses[node]])

  if not opts.no_headers:

    headers = {"name": "Name"}

  else:

    headers = None

  data = GenerateTable(separator=None, headers=headers, fields=["name"],

                       data=[[os] for os in os_set])

  for line in data:

    logger.ToStdout(line)

  return 0

def _DiagnoseOSValid(obj):

  """Verify whether an OS diagnose object represents a valid OS

    Args:

      obj: an diagnostic object as returned by OpDiagnoseOS

    Returns:

      bool: OS validity status

  """

  if isinstance(obj, objects.OS):

    return True

  elif isinstance(obj, errors.InvalidOS):

    return False

  else:

    raise errors.ProgrammerError('unknown OS diagnose type')

def _DiagnoseOSStatus(obj):

  """Generate a status message for an OS diagnose object.

    Args:

      obj: an diagnostic object as returned by OpDiagnoseOS

    Returns:

      string: a description of the OS status

  """

  if _DiagnoseOSValid(obj):

    return "valid (path: %s)" % obj.path

  else:

    return "%s (path: %s)" % (obj.args[2], obj.args[1])

def DiagnoseOS(opts, args):

  """Analyse all OSes on this cluster.

  """

  op = opcodes.OpDiagnoseOS()

  result = SubmitOpCode(op)

  if not result:

    logger.ToStdout("Can't get the OS list")

    return 1

  format = "%-*s %-*s %s"

  node_data = result

  all_os = {}

  for node_name in node_data:

    nr = node_data[node_name]

    if nr:

      for obj in nr:

        if isinstance(obj, objects.OS):

          os_name = obj.name

        else:

          os_name = obj.args[0]

        if os_name not in all_os:

          all_os[os_name] = {}

        if node_name not in all_os[os_name]:

          all_os[os_name][node_name] = []

        all_os[os_name][node_name].append(obj)

  max_name = len('Name')

  if all_os:

    max_name = max(max_name, max([len(name) for name in all_os]))

  max_node = len('Status/Node')

  max_node = max(max_node, max([len(name) for name in node_data]))

  logger.ToStdout(format % (max_name, 'Name', max_node, 'Status/Node',

                            'Details'))

  for os_name in all_os:

    nodes_valid = {}

    nodes_bad = {}

    for node_name in node_data:

      if node_name in all_os[os_name]:

        first_os = all_os[os_name][node_name].pop(0)

        first_os_status = _DiagnoseOSStatus(first_os)

        if _DiagnoseOSValid(first_os):

          nodes_valid[node_name] = first_os_status

        else:

          nodes_bad[node_name] = first_os_status

      else:

        nodes_bad[node_name] = "OS not found"

    if nodes_valid and not nodes_bad:

      status = "valid"

    elif not nodes_valid and nodes_bad:

      status = "invalid"

    else:

      status = "partial valid"

    def _OutputNodeHiddenOSStatus(dobj_list):

      for dobj in dobj_list:

        logger.ToStdout(format % (max_name, "", max_node, "",

                                  "[hidden] %s" %

                                  _DiagnoseOSStatus(dobj)))

    def _OutputPerNodeOSStatus(status_map):

      map_k = utils.NiceSort(status_map.keys())

      for node_name in map_k:

        logger.ToStdout(format % (max_name, "", max_node,

                                  node_name, status_map[node_name]))

        if node_name in all_os[os_name]:

          _OutputNodeHiddenOSStatus(all_os[os_name][node_name])

    logger.ToStdout(format % (max_name, os_name, max_node, status, ""))

    _OutputPerNodeOSStatus(nodes_valid)

    _OutputPerNodeOSStatus(nodes_bad)

commands = {

  'list': (ListOS, ARGS_NONE, [DEBUG_OPT, NOHDR_OPT], "",

           "Lists all valid OSes on the master"),

  'diagnose': (DiagnoseOS, ARGS_NONE, [DEBUG_OPT], "",

               "Diagnose all OSes"),

  }

if __name__ == '__main__':

  sys.exit(GenericMain(commands))