root / lib / client / gnt_storage.py @ 0500f6fd
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# Copyright (C) 2012 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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"""External Storage related commands"""
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# pylint: disable=W0401,W0613,W0614,C0103
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# W0401: Wildcard import ganeti.cli
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# W0613: Unused argument, since all functions follow the same API
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# W0614: Unused import %s from wildcard import (since we need cli)
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# C0103: Invalid name gnt-storage
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from ganeti.cli import * |
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from ganeti import opcodes |
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from ganeti import utils |
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def ShowExtStorageInfo(opts, args): |
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"""List detailed information about ExtStorage providers.
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@param opts: the command line options selected by the user
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@type args: list
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@param args: empty list or list of ExtStorage providers' names
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@rtype: int
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@return: the desired exit code
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"""
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op = opcodes.OpExtStorageDiagnose(output_fields=["name", "nodegroup_status", |
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"parameters"],
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names=[]) |
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result = SubmitOpCode(op, opts=opts) |
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if not result: |
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ToStderr("Can't get the ExtStorage providers list")
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return 1 |
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do_filter = bool(args)
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for (name, nodegroup_data, parameters) in result: |
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if do_filter:
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if name not in args: |
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continue
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else:
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args.remove(name) |
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nodegroups_valid = [] |
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for nodegroup_name, nodegroup_status in nodegroup_data.iteritems(): |
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if nodegroup_status:
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nodegroups_valid.append(nodegroup_name) |
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ToStdout("%s:", name)
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if nodegroups_valid != []:
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ToStdout(" - Valid for nodegroups:")
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for ndgrp in utils.NiceSort(nodegroups_valid): |
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ToStdout(" %s", ndgrp)
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ToStdout(" - Supported parameters:")
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for pname, pdesc in parameters: |
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ToStdout(" %s: %s", pname, pdesc)
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else:
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ToStdout(" - Invalid for all nodegroups")
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ToStdout("")
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if args:
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for name in args: |
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ToStdout("%s: Not Found", name)
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ToStdout("")
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return 0 |
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def _ExtStorageStatus(status, diagnose): |
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"""Beautifier function for ExtStorage status.
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@type status: boolean
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@param status: is the ExtStorage provider valid
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@type diagnose: string
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@param diagnose: the error message for invalid ExtStorages
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@rtype: string
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@return: a formatted status
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"""
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if status:
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return "valid" |
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else:
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return "invalid - %s" % diagnose |
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def DiagnoseExtStorage(opts, args): |
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"""Analyse all ExtStorage providers.
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@param opts: the command line options selected by the user
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@type args: list
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@param args: should be an empty list
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@rtype: int
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@return: the desired exit code
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"""
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op = opcodes.OpExtStorageDiagnose(output_fields=["name", "node_status", |
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"nodegroup_status"],
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names=[]) |
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result = SubmitOpCode(op, opts=opts) |
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if not result: |
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ToStderr("Can't get the list of ExtStorage providers")
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return 1 |
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for provider_name, node_data, nodegroup_data in result: |
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nodes_valid = {} |
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nodes_bad = {} |
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nodegroups_valid = {} |
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nodegroups_bad = {} |
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# Per node diagnose
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for node_name, node_info in node_data.iteritems(): |
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if node_info: # at least one entry in the per-node list |
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(fo_path, fo_status, fo_msg, fo_params) = node_info.pop(0)
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fo_msg = "%s (path: %s)" % (_ExtStorageStatus(fo_status, fo_msg),
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fo_path) |
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if fo_params:
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fo_msg += (" [parameters: %s]" %
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utils.CommaJoin([v[0] for v in fo_params])) |
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else:
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fo_msg += " [no parameters]"
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if fo_status:
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nodes_valid[node_name] = fo_msg |
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else:
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nodes_bad[node_name] = fo_msg |
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else:
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nodes_bad[node_name] = "ExtStorage provider not found"
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# Per nodegroup diagnose
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for nodegroup_name, nodegroup_status in nodegroup_data.iteritems(): |
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status = nodegroup_status |
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if status:
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nodegroups_valid[nodegroup_name] = "valid"
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else:
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nodegroups_bad[nodegroup_name] = "invalid"
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def _OutputPerNodegroupStatus(msg_map): |
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map_k = utils.NiceSort(msg_map.keys()) |
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for nodegroup in map_k: |
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ToStdout(" For nodegroup: %s --> %s", nodegroup,
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msg_map[nodegroup]) |
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def _OutputPerNodeStatus(msg_map): |
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map_k = utils.NiceSort(msg_map.keys()) |
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for node_name in map_k: |
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ToStdout(" Node: %s, status: %s", node_name, msg_map[node_name])
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# Print the output
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st_msg = "Provider: %s" % provider_name
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ToStdout(st_msg) |
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ToStdout("---")
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_OutputPerNodeStatus(nodes_valid) |
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_OutputPerNodeStatus(nodes_bad) |
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ToStdout(" --")
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_OutputPerNodegroupStatus(nodegroups_valid) |
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_OutputPerNodegroupStatus(nodegroups_bad) |
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ToStdout("")
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return 0 |
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commands = { |
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"diagnose": (
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DiagnoseExtStorage, ARGS_NONE, [PRIORITY_OPT], |
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"", "Diagnose all ExtStorage providers"), |
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"info": (
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ShowExtStorageInfo, [ArgOs()], [PRIORITY_OPT], |
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"", "Show info about ExtStorage providers"), |
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} |
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def Main(): |
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return GenericMain(commands)
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