root / lib / query.py @ d1c3c3b3
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# Copyright (C) 2010, 2011 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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"""Module for query operations
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How it works:
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- Add field definitions
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- See how L{NODE_FIELDS} is built
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- Each field gets:
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- Query field definition (L{objects.QueryFieldDefinition}, use
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L{_MakeField} for creating), containing:
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- Name, must be lowercase and match L{FIELD_NAME_RE}
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- Title for tables, must not contain whitespace and match
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L{TITLE_RE}
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- Value data type, e.g. L{constants.QFT_NUMBER}
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- Data request type, see e.g. C{NQ_*}
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- A retrieval function, see L{Query.__init__} for description
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- Pass list of fields through L{_PrepareFieldList} for preparation and
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checks
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- Instantiate L{Query} with prepared field list definition and selected fields
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- Call L{Query.RequestedData} to determine what data to collect/compute
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- Call L{Query.Query} or L{Query.OldStyleQuery} with collected data and use
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result
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- Data container must support iteration using C{__iter__}
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- Items are passed to retrieval functions and can have any format
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- Call L{Query.GetFields} to get list of definitions for selected fields
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@attention: Retrieval functions must be idempotent. They can be called multiple
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times, in any order and any number of times. This is important to keep in
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mind for implementing filters in the future.
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"""
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import logging |
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import operator |
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import re |
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from ganeti import constants |
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from ganeti import errors |
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from ganeti import utils |
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from ganeti import compat |
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from ganeti import objects |
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from ganeti import ht |
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from ganeti.constants import (QFT_UNKNOWN, QFT_TEXT, QFT_BOOL, QFT_NUMBER, |
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QFT_UNIT, QFT_TIMESTAMP, QFT_OTHER, |
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QRFS_NORMAL, QRFS_UNKNOWN, QRFS_NODATA, |
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QRFS_UNAVAIL, QRFS_OFFLINE) |
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# Constants for requesting data from the caller/data provider. Each property
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# collected/computed separately by the data provider should have its own to
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# only collect the requested data and not more.
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(NQ_CONFIG, |
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NQ_INST, |
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NQ_LIVE, |
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NQ_GROUP, |
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NQ_OOB) = range(1, 6) |
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(IQ_CONFIG, |
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IQ_LIVE, |
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IQ_DISKUSAGE) = range(100, 103) |
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(LQ_MODE, |
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LQ_OWNER, |
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LQ_PENDING) = range(10, 13) |
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(GQ_CONFIG, |
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GQ_NODE, |
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GQ_INST) = range(200, 203) |
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FIELD_NAME_RE = re.compile(r"^[a-z0-9/._]+$")
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TITLE_RE = re.compile(r"^[^\s]+$")
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#: Verification function for each field type
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_VERIFY_FN = { |
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QFT_UNKNOWN: ht.TNone, |
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QFT_TEXT: ht.TString, |
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QFT_BOOL: ht.TBool, |
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QFT_NUMBER: ht.TInt, |
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QFT_UNIT: ht.TInt, |
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QFT_TIMESTAMP: ht.TOr(ht.TInt, ht.TFloat), |
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QFT_OTHER: lambda _: True, |
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} |
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# Unique objects for special field statuses
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_FS_UNKNOWN = object()
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_FS_NODATA = object()
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_FS_UNAVAIL = object()
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_FS_OFFLINE = object()
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def _GetUnknownField(ctx, item): # pylint: disable-msg=W0613 |
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"""Gets the contents of an unknown field.
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"""
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return _FS_UNKNOWN
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def _GetQueryFields(fielddefs, selected): |
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"""Calculates the internal list of selected fields.
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Unknown fields are returned as L{constants.QFT_UNKNOWN}.
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@type fielddefs: dict
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@param fielddefs: Field definitions
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@type selected: list of strings
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@param selected: List of selected fields
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"""
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result = [] |
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for name in selected: |
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try:
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fdef = fielddefs[name] |
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except KeyError: |
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fdef = (_MakeField(name, name, QFT_UNKNOWN), None, _GetUnknownField)
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assert len(fdef) == 3 |
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result.append(fdef) |
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return result
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def GetAllFields(fielddefs): |
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"""Extract L{objects.QueryFieldDefinition} from field definitions.
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@rtype: list of L{objects.QueryFieldDefinition}
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"""
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return [fdef for (fdef, _, _) in fielddefs] |
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class Query: |
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def __init__(self, fieldlist, selected): |
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"""Initializes this class.
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The field definition is a dictionary with the field's name as a key and a
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tuple containing, in order, the field definition object
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(L{objects.QueryFieldDefinition}, the data kind to help calling code
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collect data and a retrieval function. The retrieval function is called
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with two parameters, in order, the data container and the item in container
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(see L{Query.Query}).
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Users of this class can call L{RequestedData} before preparing the data
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container to determine what data is needed.
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@type fieldlist: dictionary
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@param fieldlist: Field definitions
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@type selected: list of strings
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@param selected: List of selected fields
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"""
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self._fields = _GetQueryFields(fieldlist, selected)
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def RequestedData(self): |
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"""Gets requested kinds of data.
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@rtype: frozenset
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"""
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return frozenset(datakind |
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for (_, datakind, _) in self._fields |
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if datakind is not None) |
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def GetFields(self): |
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"""Returns the list of fields for this query.
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Includes unknown fields.
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@rtype: List of L{objects.QueryFieldDefinition}
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"""
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return GetAllFields(self._fields) |
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def Query(self, ctx): |
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"""Execute a query.
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@param ctx: Data container passed to field retrieval functions, must
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support iteration using C{__iter__}
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"""
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result = [[_ProcessResult(fn(ctx, item)) for (_, _, fn) in self._fields] |
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for item in ctx] |
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# Verify result
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if __debug__:
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for row in result: |
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_VerifyResultRow(self._fields, row)
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return result
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def OldStyleQuery(self, ctx): |
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"""Query with "old" query result format.
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See L{Query.Query} for arguments.
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"""
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unknown = set(fdef.name
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for (fdef, _, _) in self._fields if fdef.kind == QFT_UNKNOWN) |
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if unknown:
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raise errors.OpPrereqError("Unknown output fields selected: %s" % |
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(utils.CommaJoin(unknown), ), |
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errors.ECODE_INVAL) |
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return [[value for (_, value) in row] |
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for row in self.Query(ctx)] |
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def _ProcessResult(value): |
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"""Converts result values into externally-visible ones.
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"""
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if value is _FS_UNKNOWN: |
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return (QRFS_UNKNOWN, None) |
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elif value is _FS_NODATA: |
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return (QRFS_NODATA, None) |
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elif value is _FS_UNAVAIL: |
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return (QRFS_UNAVAIL, None) |
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elif value is _FS_OFFLINE: |
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return (QRFS_OFFLINE, None) |
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else:
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return (QRFS_NORMAL, value)
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def _VerifyResultRow(fields, row): |
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"""Verifies the contents of a query result row.
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@type fields: list
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@param fields: Field definitions for result
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@type row: list of tuples
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@param row: Row data
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"""
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assert len(row) == len(fields) |
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errs = [] |
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for ((status, value), (fdef, _, _)) in zip(row, fields): |
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if status == QRFS_NORMAL:
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if not _VERIFY_FN[fdef.kind](value): |
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errs.append("normal field %s fails validation (value is %s)" %
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(fdef.name, value)) |
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elif value is not None: |
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errs.append("abnormal field %s has a non-None value" % fdef.name)
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assert not errs, ("Failed validation: %s in row %s" % |
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(utils.CommaJoin(errors), row)) |
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def _PrepareFieldList(fields): |
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"""Prepares field list for use by L{Query}.
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Converts the list to a dictionary and does some verification.
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@type fields: list of tuples; (L{objects.QueryFieldDefinition}, data kind,
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retrieval function)
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@param fields: List of fields, see L{Query.__init__} for a better description
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@rtype: dict
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@return: Field dictionary for L{Query}
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"""
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if __debug__:
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duplicates = utils.FindDuplicates(fdef.title.lower() |
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for (fdef, _, _) in fields) |
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assert not duplicates, "Duplicate title(s) found: %r" % duplicates |
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result = {} |
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for field in fields: |
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(fdef, _, fn) = field |
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assert fdef.name and fdef.title, "Name and title are required" |
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assert FIELD_NAME_RE.match(fdef.name)
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assert TITLE_RE.match(fdef.title)
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assert callable(fn) |
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assert fdef.name not in result, \ |
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"Duplicate field name '%s' found" % fdef.name
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result[fdef.name] = field |
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assert len(result) == len(fields) |
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assert compat.all(name == fdef.name
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for (name, (fdef, _, _)) in result.items()) |
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return result
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def GetQueryResponse(query, ctx): |
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"""Prepares the response for a query.
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@type query: L{Query}
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@param ctx: Data container, see L{Query.Query}
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"""
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return objects.QueryResponse(data=query.Query(ctx),
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fields=query.GetFields()).ToDict() |
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def QueryFields(fielddefs, selected): |
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"""Returns list of available fields.
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@type fielddefs: dict
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@param fielddefs: Field definitions
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@type selected: list of strings
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@param selected: List of selected fields
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@return: List of L{objects.QueryFieldDefinition}
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"""
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if selected is None: |
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# Client requests all fields, sort by name
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fdefs = utils.NiceSort(GetAllFields(fielddefs.values()), |
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key=operator.attrgetter("name"))
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else:
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# Keep order as requested by client
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fdefs = Query(fielddefs, selected).GetFields() |
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return objects.QueryFieldsResponse(fields=fdefs).ToDict()
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def _MakeField(name, title, kind): |
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"""Wrapper for creating L{objects.QueryFieldDefinition} instances.
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@param name: Field name as a regular expression
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@param title: Human-readable title
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@param kind: Field type
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"""
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return objects.QueryFieldDefinition(name=name, title=title, kind=kind)
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def _GetNodeRole(node, master_name): |
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"""Determine node role.
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@type node: L{objects.Node}
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@param node: Node object
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@type master_name: string
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@param master_name: Master node name
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"""
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if node.name == master_name:
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return "M" |
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elif node.master_candidate:
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return "C" |
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elif node.drained:
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return "D" |
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elif node.offline:
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return "O" |
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else:
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return "R" |
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def _GetItemAttr(attr): |
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"""Returns a field function to return an attribute of the item.
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@param attr: Attribute name
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"""
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getter = operator.attrgetter(attr) |
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return lambda _, item: getter(item) |
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def _GetItemTimestamp(getter): |
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"""Returns function for getting timestamp of item.
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@type getter: callable
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@param getter: Function to retrieve timestamp attribute
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"""
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def fn(_, item): |
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"""Returns a timestamp of item.
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"""
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timestamp = getter(item) |
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if timestamp is None: |
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# Old configs might not have all timestamps
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return _FS_UNAVAIL
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else:
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return timestamp
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return fn
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def _GetItemTimestampFields(datatype): |
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"""Returns common timestamp fields.
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@param datatype: Field data type for use by L{Query.RequestedData}
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"""
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return [
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(_MakeField("ctime", "CTime", QFT_TIMESTAMP), datatype, |
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_GetItemTimestamp(operator.attrgetter("ctime"))),
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(_MakeField("mtime", "MTime", QFT_TIMESTAMP), datatype, |
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_GetItemTimestamp(operator.attrgetter("mtime"))),
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] |
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class NodeQueryData: |
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"""Data container for node data queries.
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"""
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def __init__(self, nodes, live_data, master_name, node_to_primary, |
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node_to_secondary, groups, oob_support, cluster): |
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"""Initializes this class.
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"""
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self.nodes = nodes
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self.live_data = live_data
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self.master_name = master_name
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self.node_to_primary = node_to_primary
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self.node_to_secondary = node_to_secondary
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self.groups = groups
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self.oob_support = oob_support
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self.cluster = cluster
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# Used for individual rows
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self.curlive_data = None |
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def __iter__(self): |
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"""Iterate over all nodes.
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This function has side-effects and only one instance of the resulting
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generator should be used at a time.
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"""
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for node in self.nodes: |
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if self.live_data: |
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self.curlive_data = self.live_data.get(node.name, None) |
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else:
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self.curlive_data = None |
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yield node
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#: Fields that are direct attributes of an L{objects.Node} object
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_NODE_SIMPLE_FIELDS = { |
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"drained": ("Drained", QFT_BOOL), |
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"master_candidate": ("MasterC", QFT_BOOL), |
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"master_capable": ("MasterCapable", QFT_BOOL), |
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"name": ("Node", QFT_TEXT), |
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"offline": ("Offline", QFT_BOOL), |
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"serial_no": ("SerialNo", QFT_NUMBER), |
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"uuid": ("UUID", QFT_TEXT), |
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"vm_capable": ("VMCapable", QFT_BOOL), |
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} |
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#: Fields requiring talking to the node
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_NODE_LIVE_FIELDS = { |
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"bootid": ("BootID", QFT_TEXT, "bootid"), |
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"cnodes": ("CNodes", QFT_NUMBER, "cpu_nodes"), |
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"csockets": ("CSockets", QFT_NUMBER, "cpu_sockets"), |
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"ctotal": ("CTotal", QFT_NUMBER, "cpu_total"), |
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"dfree": ("DFree", QFT_UNIT, "vg_free"), |
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"dtotal": ("DTotal", QFT_UNIT, "vg_size"), |
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"mfree": ("MFree", QFT_UNIT, "memory_free"), |
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"mnode": ("MNode", QFT_UNIT, "memory_dom0"), |
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"mtotal": ("MTotal", QFT_UNIT, "memory_total"), |
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} |
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def _GetGroup(cb): |
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"""Build function for calling another function with an node group.
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@param cb: The callback to be called with the nodegroup
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"""
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def fn(ctx, node): |
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"""Get group data for a node.
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@type ctx: L{NodeQueryData}
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@type inst: L{objects.Node}
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@param inst: Node object
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"""
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ng = ctx.groups.get(node.group, None)
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if ng is None: |
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# Nodes always have a group, or the configuration is corrupt
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return _FS_UNAVAIL
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return cb(ctx, node, ng)
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return fn
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def _GetNodeGroup(ctx, node, ng): # pylint: disable-msg=W0613 |
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"""Returns the name of a node's group.
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@type ctx: L{NodeQueryData}
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@type node: L{objects.Node}
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@param node: Node object
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@type ng: L{objects.NodeGroup}
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@param ng: The node group this node belongs to
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"""
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return ng.name
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def _GetNodePower(ctx, node): |
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"""Returns the node powered state
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@type ctx: L{NodeQueryData}
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@type node: L{objects.Node}
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@param node: Node object
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"""
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if ctx.oob_support[node.name]:
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return node.powered
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return _FS_UNAVAIL
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def _GetNdParams(ctx, node, ng): |
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"""Returns the ndparams for this node.
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@type ctx: L{NodeQueryData}
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@type node: L{objects.Node}
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@param node: Node object
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@type ng: L{objects.NodeGroup}
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@param ng: The node group this node belongs to
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"""
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return ctx.cluster.SimpleFillND(ng.FillND(node))
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def _GetLiveNodeField(field, kind, ctx, node): |
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"""Gets the value of a "live" field from L{NodeQueryData}.
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@param field: Live field name
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@param kind: Data kind, one of L{constants.QFT_ALL}
|
549 |
@type ctx: L{NodeQueryData}
|
550 |
@type node: L{objects.Node}
|
551 |
@param node: Node object
|
552 |
|
553 |
"""
|
554 |
if node.offline:
|
555 |
return _FS_OFFLINE
|
556 |
|
557 |
if not ctx.curlive_data: |
558 |
return _FS_NODATA
|
559 |
|
560 |
try:
|
561 |
value = ctx.curlive_data[field] |
562 |
except KeyError: |
563 |
return _FS_UNAVAIL
|
564 |
|
565 |
if kind == QFT_TEXT:
|
566 |
return value
|
567 |
|
568 |
assert kind in (QFT_NUMBER, QFT_UNIT) |
569 |
|
570 |
# Try to convert into number
|
571 |
try:
|
572 |
return int(value) |
573 |
except (ValueError, TypeError): |
574 |
logging.exception("Failed to convert node field '%s' (value %r) to int",
|
575 |
value, field) |
576 |
return _FS_UNAVAIL
|
577 |
|
578 |
|
579 |
def _BuildNodeFields(): |
580 |
"""Builds list of fields for node queries.
|
581 |
|
582 |
"""
|
583 |
fields = [ |
584 |
(_MakeField("pip", "PrimaryIP", QFT_TEXT), NQ_CONFIG, |
585 |
_GetItemAttr("primary_ip")),
|
586 |
(_MakeField("sip", "SecondaryIP", QFT_TEXT), NQ_CONFIG, |
587 |
_GetItemAttr("secondary_ip")),
|
588 |
(_MakeField("tags", "Tags", QFT_OTHER), NQ_CONFIG, |
589 |
lambda ctx, node: list(node.GetTags())), |
590 |
(_MakeField("master", "IsMaster", QFT_BOOL), NQ_CONFIG, |
591 |
lambda ctx, node: node.name == ctx.master_name),
|
592 |
(_MakeField("role", "Role", QFT_TEXT), NQ_CONFIG, |
593 |
lambda ctx, node: _GetNodeRole(node, ctx.master_name)),
|
594 |
(_MakeField("group", "Group", QFT_TEXT), NQ_GROUP, |
595 |
_GetGroup(_GetNodeGroup)), |
596 |
(_MakeField("group.uuid", "GroupUUID", QFT_TEXT), |
597 |
NQ_CONFIG, _GetItemAttr("group")),
|
598 |
(_MakeField("powered", "Powered", QFT_BOOL), NQ_OOB, _GetNodePower), |
599 |
(_MakeField("ndparams", "NodeParameters", QFT_OTHER), NQ_GROUP, |
600 |
_GetGroup(_GetNdParams)), |
601 |
(_MakeField("custom_ndparams", "CustomNodeParameters", QFT_OTHER), |
602 |
NQ_GROUP, _GetItemAttr("ndparams")),
|
603 |
] |
604 |
|
605 |
def _GetLength(getter): |
606 |
return lambda ctx, node: len(getter(ctx)[node.name]) |
607 |
|
608 |
def _GetList(getter): |
609 |
return lambda ctx, node: list(getter(ctx)[node.name]) |
610 |
|
611 |
# Add fields operating on instance lists
|
612 |
for prefix, titleprefix, getter in \ |
613 |
[("p", "Pri", operator.attrgetter("node_to_primary")), |
614 |
("s", "Sec", operator.attrgetter("node_to_secondary"))]: |
615 |
fields.extend([ |
616 |
(_MakeField("%sinst_cnt" % prefix, "%sinst" % prefix.upper(), QFT_NUMBER), |
617 |
NQ_INST, _GetLength(getter)), |
618 |
(_MakeField("%sinst_list" % prefix, "%sInstances" % titleprefix, |
619 |
QFT_OTHER), |
620 |
NQ_INST, _GetList(getter)), |
621 |
]) |
622 |
|
623 |
# Add simple fields
|
624 |
fields.extend([(_MakeField(name, title, kind), NQ_CONFIG, _GetItemAttr(name)) |
625 |
for (name, (title, kind)) in _NODE_SIMPLE_FIELDS.items()]) |
626 |
|
627 |
# Add fields requiring live data
|
628 |
fields.extend([ |
629 |
(_MakeField(name, title, kind), NQ_LIVE, |
630 |
compat.partial(_GetLiveNodeField, nfield, kind)) |
631 |
for (name, (title, kind, nfield)) in _NODE_LIVE_FIELDS.items() |
632 |
]) |
633 |
|
634 |
# Add timestamps
|
635 |
fields.extend(_GetItemTimestampFields(NQ_CONFIG)) |
636 |
|
637 |
return _PrepareFieldList(fields)
|
638 |
|
639 |
|
640 |
class InstanceQueryData: |
641 |
"""Data container for instance data queries.
|
642 |
|
643 |
"""
|
644 |
def __init__(self, instances, cluster, disk_usage, offline_nodes, bad_nodes, |
645 |
live_data): |
646 |
"""Initializes this class.
|
647 |
|
648 |
@param instances: List of instance objects
|
649 |
@param cluster: Cluster object
|
650 |
@type disk_usage: dict; instance name as key
|
651 |
@param disk_usage: Per-instance disk usage
|
652 |
@type offline_nodes: list of strings
|
653 |
@param offline_nodes: List of offline nodes
|
654 |
@type bad_nodes: list of strings
|
655 |
@param bad_nodes: List of faulty nodes
|
656 |
@type live_data: dict; instance name as key
|
657 |
@param live_data: Per-instance live data
|
658 |
|
659 |
"""
|
660 |
assert len(set(bad_nodes) & set(offline_nodes)) == len(offline_nodes), \ |
661 |
"Offline nodes not included in bad nodes"
|
662 |
assert not (set(live_data.keys()) & set(bad_nodes)), \ |
663 |
"Found live data for bad or offline nodes"
|
664 |
|
665 |
self.instances = instances
|
666 |
self.cluster = cluster
|
667 |
self.disk_usage = disk_usage
|
668 |
self.offline_nodes = offline_nodes
|
669 |
self.bad_nodes = bad_nodes
|
670 |
self.live_data = live_data
|
671 |
|
672 |
# Used for individual rows
|
673 |
self.inst_hvparams = None |
674 |
self.inst_beparams = None |
675 |
self.inst_nicparams = None |
676 |
|
677 |
def __iter__(self): |
678 |
"""Iterate over all instances.
|
679 |
|
680 |
This function has side-effects and only one instance of the resulting
|
681 |
generator should be used at a time.
|
682 |
|
683 |
"""
|
684 |
for inst in self.instances: |
685 |
self.inst_hvparams = self.cluster.FillHV(inst, skip_globals=True) |
686 |
self.inst_beparams = self.cluster.FillBE(inst) |
687 |
self.inst_nicparams = [self.cluster.SimpleFillNIC(nic.nicparams) |
688 |
for nic in inst.nics] |
689 |
|
690 |
yield inst
|
691 |
|
692 |
|
693 |
def _GetInstOperState(ctx, inst): |
694 |
"""Get instance's operational status.
|
695 |
|
696 |
@type ctx: L{InstanceQueryData}
|
697 |
@type inst: L{objects.Instance}
|
698 |
@param inst: Instance object
|
699 |
|
700 |
"""
|
701 |
# Can't use QRFS_OFFLINE here as it would describe the instance to
|
702 |
# be offline when we actually don't know due to missing data
|
703 |
if inst.primary_node in ctx.bad_nodes: |
704 |
return _FS_NODATA
|
705 |
else:
|
706 |
return bool(ctx.live_data.get(inst.name)) |
707 |
|
708 |
|
709 |
def _GetInstLiveData(name): |
710 |
"""Build function for retrieving live data.
|
711 |
|
712 |
@type name: string
|
713 |
@param name: Live data field name
|
714 |
|
715 |
"""
|
716 |
def fn(ctx, inst): |
717 |
"""Get live data for an instance.
|
718 |
|
719 |
@type ctx: L{InstanceQueryData}
|
720 |
@type inst: L{objects.Instance}
|
721 |
@param inst: Instance object
|
722 |
|
723 |
"""
|
724 |
if (inst.primary_node in ctx.bad_nodes or |
725 |
inst.primary_node in ctx.offline_nodes):
|
726 |
# Can't use QRFS_OFFLINE here as it would describe the instance to be
|
727 |
# offline when we actually don't know due to missing data
|
728 |
return _FS_NODATA
|
729 |
|
730 |
if inst.name in ctx.live_data: |
731 |
data = ctx.live_data[inst.name] |
732 |
if name in data: |
733 |
return data[name]
|
734 |
|
735 |
return _FS_UNAVAIL
|
736 |
|
737 |
return fn
|
738 |
|
739 |
|
740 |
def _GetInstStatus(ctx, inst): |
741 |
"""Get instance status.
|
742 |
|
743 |
@type ctx: L{InstanceQueryData}
|
744 |
@type inst: L{objects.Instance}
|
745 |
@param inst: Instance object
|
746 |
|
747 |
"""
|
748 |
if inst.primary_node in ctx.offline_nodes: |
749 |
return "ERROR_nodeoffline" |
750 |
|
751 |
if inst.primary_node in ctx.bad_nodes: |
752 |
return "ERROR_nodedown" |
753 |
|
754 |
if bool(ctx.live_data.get(inst.name)): |
755 |
if inst.admin_up:
|
756 |
return "running" |
757 |
else:
|
758 |
return "ERROR_up" |
759 |
|
760 |
if inst.admin_up:
|
761 |
return "ERROR_down" |
762 |
|
763 |
return "ADMIN_down" |
764 |
|
765 |
|
766 |
def _GetInstDiskSize(index): |
767 |
"""Build function for retrieving disk size.
|
768 |
|
769 |
@type index: int
|
770 |
@param index: Disk index
|
771 |
|
772 |
"""
|
773 |
def fn(_, inst): |
774 |
"""Get size of a disk.
|
775 |
|
776 |
@type inst: L{objects.Instance}
|
777 |
@param inst: Instance object
|
778 |
|
779 |
"""
|
780 |
try:
|
781 |
return inst.disks[index].size
|
782 |
except IndexError: |
783 |
return _FS_UNAVAIL
|
784 |
|
785 |
return fn
|
786 |
|
787 |
|
788 |
def _GetInstNic(index, cb): |
789 |
"""Build function for calling another function with an instance NIC.
|
790 |
|
791 |
@type index: int
|
792 |
@param index: NIC index
|
793 |
@type cb: callable
|
794 |
@param cb: Callback
|
795 |
|
796 |
"""
|
797 |
def fn(ctx, inst): |
798 |
"""Call helper function with instance NIC.
|
799 |
|
800 |
@type ctx: L{InstanceQueryData}
|
801 |
@type inst: L{objects.Instance}
|
802 |
@param inst: Instance object
|
803 |
|
804 |
"""
|
805 |
try:
|
806 |
nic = inst.nics[index] |
807 |
except IndexError: |
808 |
return _FS_UNAVAIL
|
809 |
|
810 |
return cb(ctx, index, nic)
|
811 |
|
812 |
return fn
|
813 |
|
814 |
|
815 |
def _GetInstNicIp(ctx, _, nic): # pylint: disable-msg=W0613 |
816 |
"""Get a NIC's IP address.
|
817 |
|
818 |
@type ctx: L{InstanceQueryData}
|
819 |
@type nic: L{objects.NIC}
|
820 |
@param nic: NIC object
|
821 |
|
822 |
"""
|
823 |
if nic.ip is None: |
824 |
return _FS_UNAVAIL
|
825 |
else:
|
826 |
return nic.ip
|
827 |
|
828 |
|
829 |
def _GetInstNicBridge(ctx, index, _): |
830 |
"""Get a NIC's bridge.
|
831 |
|
832 |
@type ctx: L{InstanceQueryData}
|
833 |
@type index: int
|
834 |
@param index: NIC index
|
835 |
|
836 |
"""
|
837 |
assert len(ctx.inst_nicparams) >= index |
838 |
|
839 |
nicparams = ctx.inst_nicparams[index] |
840 |
|
841 |
if nicparams[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
|
842 |
return nicparams[constants.NIC_LINK]
|
843 |
else:
|
844 |
return _FS_UNAVAIL
|
845 |
|
846 |
|
847 |
def _GetInstAllNicBridges(ctx, inst): |
848 |
"""Get all network bridges for an instance.
|
849 |
|
850 |
@type ctx: L{InstanceQueryData}
|
851 |
@type inst: L{objects.Instance}
|
852 |
@param inst: Instance object
|
853 |
|
854 |
"""
|
855 |
assert len(ctx.inst_nicparams) == len(inst.nics) |
856 |
|
857 |
result = [] |
858 |
|
859 |
for nicp in ctx.inst_nicparams: |
860 |
if nicp[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
|
861 |
result.append(nicp[constants.NIC_LINK]) |
862 |
else:
|
863 |
result.append(None)
|
864 |
|
865 |
assert len(result) == len(inst.nics) |
866 |
|
867 |
return result
|
868 |
|
869 |
|
870 |
def _GetInstNicParam(name): |
871 |
"""Build function for retrieving a NIC parameter.
|
872 |
|
873 |
@type name: string
|
874 |
@param name: Parameter name
|
875 |
|
876 |
"""
|
877 |
def fn(ctx, index, _): |
878 |
"""Get a NIC's bridge.
|
879 |
|
880 |
@type ctx: L{InstanceQueryData}
|
881 |
@type inst: L{objects.Instance}
|
882 |
@param inst: Instance object
|
883 |
@type nic: L{objects.NIC}
|
884 |
@param nic: NIC object
|
885 |
|
886 |
"""
|
887 |
assert len(ctx.inst_nicparams) >= index |
888 |
return ctx.inst_nicparams[index][name]
|
889 |
|
890 |
return fn
|
891 |
|
892 |
|
893 |
def _GetInstanceNetworkFields(): |
894 |
"""Get instance fields involving network interfaces.
|
895 |
|
896 |
@return: List of field definitions used as input for L{_PrepareFieldList}
|
897 |
|
898 |
"""
|
899 |
nic_mac_fn = lambda ctx, _, nic: nic.mac
|
900 |
nic_mode_fn = _GetInstNicParam(constants.NIC_MODE) |
901 |
nic_link_fn = _GetInstNicParam(constants.NIC_LINK) |
902 |
|
903 |
fields = [ |
904 |
# First NIC (legacy)
|
905 |
(_MakeField("ip", "IP_address", QFT_TEXT), IQ_CONFIG, |
906 |
_GetInstNic(0, _GetInstNicIp)),
|
907 |
(_MakeField("mac", "MAC_address", QFT_TEXT), IQ_CONFIG, |
908 |
_GetInstNic(0, nic_mac_fn)),
|
909 |
(_MakeField("bridge", "Bridge", QFT_TEXT), IQ_CONFIG, |
910 |
_GetInstNic(0, _GetInstNicBridge)),
|
911 |
(_MakeField("nic_mode", "NIC_Mode", QFT_TEXT), IQ_CONFIG, |
912 |
_GetInstNic(0, nic_mode_fn)),
|
913 |
(_MakeField("nic_link", "NIC_Link", QFT_TEXT), IQ_CONFIG, |
914 |
_GetInstNic(0, nic_link_fn)),
|
915 |
|
916 |
# All NICs
|
917 |
(_MakeField("nic.count", "NICs", QFT_NUMBER), IQ_CONFIG, |
918 |
lambda ctx, inst: len(inst.nics)), |
919 |
(_MakeField("nic.macs", "NIC_MACs", QFT_OTHER), IQ_CONFIG, |
920 |
lambda ctx, inst: [nic.mac for nic in inst.nics]), |
921 |
(_MakeField("nic.ips", "NIC_IPs", QFT_OTHER), IQ_CONFIG, |
922 |
lambda ctx, inst: [nic.ip for nic in inst.nics]), |
923 |
(_MakeField("nic.modes", "NIC_modes", QFT_OTHER), IQ_CONFIG, |
924 |
lambda ctx, inst: [nicp[constants.NIC_MODE]
|
925 |
for nicp in ctx.inst_nicparams]), |
926 |
(_MakeField("nic.links", "NIC_links", QFT_OTHER), IQ_CONFIG, |
927 |
lambda ctx, inst: [nicp[constants.NIC_LINK]
|
928 |
for nicp in ctx.inst_nicparams]), |
929 |
(_MakeField("nic.bridges", "NIC_bridges", QFT_OTHER), IQ_CONFIG, |
930 |
_GetInstAllNicBridges), |
931 |
] |
932 |
|
933 |
# NICs by number
|
934 |
for i in range(constants.MAX_NICS): |
935 |
fields.extend([ |
936 |
(_MakeField("nic.ip/%s" % i, "NicIP/%s" % i, QFT_TEXT), |
937 |
IQ_CONFIG, _GetInstNic(i, _GetInstNicIp)), |
938 |
(_MakeField("nic.mac/%s" % i, "NicMAC/%s" % i, QFT_TEXT), |
939 |
IQ_CONFIG, _GetInstNic(i, nic_mac_fn)), |
940 |
(_MakeField("nic.mode/%s" % i, "NicMode/%s" % i, QFT_TEXT), |
941 |
IQ_CONFIG, _GetInstNic(i, nic_mode_fn)), |
942 |
(_MakeField("nic.link/%s" % i, "NicLink/%s" % i, QFT_TEXT), |
943 |
IQ_CONFIG, _GetInstNic(i, nic_link_fn)), |
944 |
(_MakeField("nic.bridge/%s" % i, "NicBridge/%s" % i, QFT_TEXT), |
945 |
IQ_CONFIG, _GetInstNic(i, _GetInstNicBridge)), |
946 |
]) |
947 |
|
948 |
return fields
|
949 |
|
950 |
|
951 |
def _GetInstDiskUsage(ctx, inst): |
952 |
"""Get disk usage for an instance.
|
953 |
|
954 |
@type ctx: L{InstanceQueryData}
|
955 |
@type inst: L{objects.Instance}
|
956 |
@param inst: Instance object
|
957 |
|
958 |
"""
|
959 |
usage = ctx.disk_usage[inst.name] |
960 |
|
961 |
if usage is None: |
962 |
usage = 0
|
963 |
|
964 |
return usage
|
965 |
|
966 |
|
967 |
def _GetInstanceDiskFields(): |
968 |
"""Get instance fields involving disks.
|
969 |
|
970 |
@return: List of field definitions used as input for L{_PrepareFieldList}
|
971 |
|
972 |
"""
|
973 |
fields = [ |
974 |
(_MakeField("disk_usage", "DiskUsage", QFT_UNIT), IQ_DISKUSAGE, |
975 |
_GetInstDiskUsage), |
976 |
(_MakeField("sda_size", "LegacyDisk/0", QFT_UNIT), IQ_CONFIG, |
977 |
_GetInstDiskSize(0)),
|
978 |
(_MakeField("sdb_size", "LegacyDisk/1", QFT_UNIT), IQ_CONFIG, |
979 |
_GetInstDiskSize(1)),
|
980 |
(_MakeField("disk.count", "Disks", QFT_NUMBER), IQ_CONFIG, |
981 |
lambda ctx, inst: len(inst.disks)), |
982 |
(_MakeField("disk.sizes", "Disk_sizes", QFT_OTHER), IQ_CONFIG, |
983 |
lambda ctx, inst: [disk.size for disk in inst.disks]), |
984 |
] |
985 |
|
986 |
# Disks by number
|
987 |
fields.extend([ |
988 |
(_MakeField("disk.size/%s" % i, "Disk/%s" % i, QFT_UNIT), |
989 |
IQ_CONFIG, _GetInstDiskSize(i)) |
990 |
for i in range(constants.MAX_DISKS) |
991 |
]) |
992 |
|
993 |
return fields
|
994 |
|
995 |
|
996 |
def _GetInstanceParameterFields(): |
997 |
"""Get instance fields involving parameters.
|
998 |
|
999 |
@return: List of field definitions used as input for L{_PrepareFieldList}
|
1000 |
|
1001 |
"""
|
1002 |
# TODO: Consider moving titles closer to constants
|
1003 |
be_title = { |
1004 |
constants.BE_AUTO_BALANCE: "Auto_balance",
|
1005 |
constants.BE_MEMORY: "ConfigMemory",
|
1006 |
constants.BE_VCPUS: "ConfigVCPUs",
|
1007 |
} |
1008 |
|
1009 |
hv_title = { |
1010 |
constants.HV_ACPI: "ACPI",
|
1011 |
constants.HV_BOOT_ORDER: "Boot_order",
|
1012 |
constants.HV_CDROM_IMAGE_PATH: "CDROM_image_path",
|
1013 |
constants.HV_DISK_TYPE: "Disk_type",
|
1014 |
constants.HV_INITRD_PATH: "Initrd_path",
|
1015 |
constants.HV_KERNEL_PATH: "Kernel_path",
|
1016 |
constants.HV_NIC_TYPE: "NIC_type",
|
1017 |
constants.HV_PAE: "PAE",
|
1018 |
constants.HV_VNC_BIND_ADDRESS: "VNC_bind_address",
|
1019 |
} |
1020 |
|
1021 |
fields = [ |
1022 |
# Filled parameters
|
1023 |
(_MakeField("hvparams", "HypervisorParameters", QFT_OTHER), |
1024 |
IQ_CONFIG, lambda ctx, _: ctx.inst_hvparams),
|
1025 |
(_MakeField("beparams", "BackendParameters", QFT_OTHER), |
1026 |
IQ_CONFIG, lambda ctx, _: ctx.inst_beparams),
|
1027 |
(_MakeField("vcpus", "LegacyVCPUs", QFT_NUMBER), IQ_CONFIG, |
1028 |
lambda ctx, _: ctx.inst_beparams[constants.BE_VCPUS]),
|
1029 |
|
1030 |
# Unfilled parameters
|
1031 |
(_MakeField("custom_hvparams", "CustomHypervisorParameters", QFT_OTHER), |
1032 |
IQ_CONFIG, _GetItemAttr("hvparams")),
|
1033 |
(_MakeField("custom_beparams", "CustomBackendParameters", QFT_OTHER), |
1034 |
IQ_CONFIG, _GetItemAttr("beparams")),
|
1035 |
(_MakeField("custom_nicparams", "CustomNicParameters", QFT_OTHER), |
1036 |
IQ_CONFIG, lambda ctx, inst: [nic.nicparams for nic in inst.nics]), |
1037 |
] |
1038 |
|
1039 |
# HV params
|
1040 |
def _GetInstHvParam(name): |
1041 |
return lambda ctx, _: ctx.inst_hvparams.get(name, None) |
1042 |
|
1043 |
fields.extend([ |
1044 |
# For now all hypervisor parameters are exported as QFT_OTHER
|
1045 |
(_MakeField("hv/%s" % name, hv_title.get(name, "hv/%s" % name), QFT_OTHER), |
1046 |
IQ_CONFIG, _GetInstHvParam(name)) |
1047 |
for name in constants.HVS_PARAMETERS |
1048 |
if name not in constants.HVC_GLOBALS |
1049 |
]) |
1050 |
|
1051 |
# BE params
|
1052 |
def _GetInstBeParam(name): |
1053 |
return lambda ctx, _: ctx.inst_beparams.get(name, None) |
1054 |
|
1055 |
fields.extend([ |
1056 |
# For now all backend parameters are exported as QFT_OTHER
|
1057 |
(_MakeField("be/%s" % name, be_title.get(name, "be/%s" % name), QFT_OTHER), |
1058 |
IQ_CONFIG, _GetInstBeParam(name)) |
1059 |
for name in constants.BES_PARAMETERS |
1060 |
]) |
1061 |
|
1062 |
return fields
|
1063 |
|
1064 |
|
1065 |
_INST_SIMPLE_FIELDS = { |
1066 |
"disk_template": ("Disk_template", QFT_TEXT), |
1067 |
"hypervisor": ("Hypervisor", QFT_TEXT), |
1068 |
"name": ("Node", QFT_TEXT), |
1069 |
# Depending on the hypervisor, the port can be None
|
1070 |
"network_port": ("Network_port", QFT_OTHER), |
1071 |
"os": ("OS", QFT_TEXT), |
1072 |
"serial_no": ("SerialNo", QFT_NUMBER), |
1073 |
"uuid": ("UUID", QFT_TEXT), |
1074 |
} |
1075 |
|
1076 |
|
1077 |
def _BuildInstanceFields(): |
1078 |
"""Builds list of fields for instance queries.
|
1079 |
|
1080 |
"""
|
1081 |
fields = [ |
1082 |
(_MakeField("pnode", "Primary_node", QFT_TEXT), IQ_CONFIG, |
1083 |
_GetItemAttr("primary_node")),
|
1084 |
(_MakeField("snodes", "Secondary_Nodes", QFT_OTHER), IQ_CONFIG, |
1085 |
lambda ctx, inst: list(inst.secondary_nodes)), |
1086 |
(_MakeField("admin_state", "Autostart", QFT_BOOL), IQ_CONFIG, |
1087 |
_GetItemAttr("admin_up")),
|
1088 |
(_MakeField("tags", "Tags", QFT_OTHER), IQ_CONFIG, |
1089 |
lambda ctx, inst: list(inst.GetTags())), |
1090 |
] |
1091 |
|
1092 |
# Add simple fields
|
1093 |
fields.extend([(_MakeField(name, title, kind), IQ_CONFIG, _GetItemAttr(name)) |
1094 |
for (name, (title, kind)) in _INST_SIMPLE_FIELDS.items()]) |
1095 |
|
1096 |
# Fields requiring talking to the node
|
1097 |
fields.extend([ |
1098 |
(_MakeField("oper_state", "Running", QFT_BOOL), IQ_LIVE, |
1099 |
_GetInstOperState), |
1100 |
(_MakeField("oper_ram", "Memory", QFT_UNIT), IQ_LIVE, |
1101 |
_GetInstLiveData("memory")),
|
1102 |
(_MakeField("oper_vcpus", "VCPUs", QFT_NUMBER), IQ_LIVE, |
1103 |
_GetInstLiveData("vcpus")),
|
1104 |
(_MakeField("status", "Status", QFT_TEXT), IQ_LIVE, _GetInstStatus), |
1105 |
]) |
1106 |
|
1107 |
fields.extend(_GetInstanceParameterFields()) |
1108 |
fields.extend(_GetInstanceDiskFields()) |
1109 |
fields.extend(_GetInstanceNetworkFields()) |
1110 |
fields.extend(_GetItemTimestampFields(IQ_CONFIG)) |
1111 |
|
1112 |
return _PrepareFieldList(fields)
|
1113 |
|
1114 |
|
1115 |
class LockQueryData: |
1116 |
"""Data container for lock data queries.
|
1117 |
|
1118 |
"""
|
1119 |
def __init__(self, lockdata): |
1120 |
"""Initializes this class.
|
1121 |
|
1122 |
"""
|
1123 |
self.lockdata = lockdata
|
1124 |
|
1125 |
def __iter__(self): |
1126 |
"""Iterate over all locks.
|
1127 |
|
1128 |
"""
|
1129 |
return iter(self.lockdata) |
1130 |
|
1131 |
|
1132 |
def _GetLockOwners(_, data): |
1133 |
"""Returns a sorted list of a lock's current owners.
|
1134 |
|
1135 |
"""
|
1136 |
(_, _, owners, _) = data |
1137 |
|
1138 |
if owners:
|
1139 |
owners = utils.NiceSort(owners) |
1140 |
|
1141 |
return owners
|
1142 |
|
1143 |
|
1144 |
def _GetLockPending(_, data): |
1145 |
"""Returns a sorted list of a lock's pending acquires.
|
1146 |
|
1147 |
"""
|
1148 |
(_, _, _, pending) = data |
1149 |
|
1150 |
if pending:
|
1151 |
pending = [(mode, utils.NiceSort(names)) |
1152 |
for (mode, names) in pending] |
1153 |
|
1154 |
return pending
|
1155 |
|
1156 |
|
1157 |
def _BuildLockFields(): |
1158 |
"""Builds list of fields for lock queries.
|
1159 |
|
1160 |
"""
|
1161 |
return _PrepareFieldList([
|
1162 |
(_MakeField("name", "Name", QFT_TEXT), None, |
1163 |
lambda ctx, (name, mode, owners, pending): name),
|
1164 |
(_MakeField("mode", "Mode", QFT_OTHER), LQ_MODE, |
1165 |
lambda ctx, (name, mode, owners, pending): mode),
|
1166 |
(_MakeField("owner", "Owner", QFT_OTHER), LQ_OWNER, _GetLockOwners), |
1167 |
(_MakeField("pending", "Pending", QFT_OTHER), LQ_PENDING, _GetLockPending), |
1168 |
]) |
1169 |
|
1170 |
|
1171 |
class GroupQueryData: |
1172 |
"""Data container for node group data queries.
|
1173 |
|
1174 |
"""
|
1175 |
def __init__(self, groups, group_to_nodes, group_to_instances): |
1176 |
"""Initializes this class.
|
1177 |
|
1178 |
@param groups: List of node group objects
|
1179 |
@type group_to_nodes: dict; group UUID as key
|
1180 |
@param group_to_nodes: Per-group list of nodes
|
1181 |
@type group_to_instances: dict; group UUID as key
|
1182 |
@param group_to_instances: Per-group list of (primary) instances
|
1183 |
|
1184 |
"""
|
1185 |
self.groups = groups
|
1186 |
self.group_to_nodes = group_to_nodes
|
1187 |
self.group_to_instances = group_to_instances
|
1188 |
|
1189 |
def __iter__(self): |
1190 |
"""Iterate over all node groups.
|
1191 |
|
1192 |
"""
|
1193 |
return iter(self.groups) |
1194 |
|
1195 |
|
1196 |
_GROUP_SIMPLE_FIELDS = { |
1197 |
"alloc_policy": ("AllocPolicy", QFT_TEXT), |
1198 |
"name": ("Group", QFT_TEXT), |
1199 |
"serial_no": ("SerialNo", QFT_NUMBER), |
1200 |
"uuid": ("UUID", QFT_TEXT), |
1201 |
"ndparams": ("NDParams", QFT_OTHER), |
1202 |
} |
1203 |
|
1204 |
|
1205 |
def _BuildGroupFields(): |
1206 |
"""Builds list of fields for node group queries.
|
1207 |
|
1208 |
"""
|
1209 |
# Add simple fields
|
1210 |
fields = [(_MakeField(name, title, kind), GQ_CONFIG, _GetItemAttr(name)) |
1211 |
for (name, (title, kind)) in _GROUP_SIMPLE_FIELDS.items()] |
1212 |
|
1213 |
def _GetLength(getter): |
1214 |
return lambda ctx, group: len(getter(ctx)[group.uuid]) |
1215 |
|
1216 |
def _GetSortedList(getter): |
1217 |
return lambda ctx, group: utils.NiceSort(getter(ctx)[group.uuid]) |
1218 |
|
1219 |
group_to_nodes = operator.attrgetter("group_to_nodes")
|
1220 |
group_to_instances = operator.attrgetter("group_to_instances")
|
1221 |
|
1222 |
# Add fields for nodes
|
1223 |
fields.extend([ |
1224 |
(_MakeField("node_cnt", "Nodes", QFT_NUMBER), |
1225 |
GQ_NODE, _GetLength(group_to_nodes)), |
1226 |
(_MakeField("node_list", "NodeList", QFT_OTHER), |
1227 |
GQ_NODE, _GetSortedList(group_to_nodes)), |
1228 |
]) |
1229 |
|
1230 |
# Add fields for instances
|
1231 |
fields.extend([ |
1232 |
(_MakeField("pinst_cnt", "Instances", QFT_NUMBER), |
1233 |
GQ_INST, _GetLength(group_to_instances)), |
1234 |
(_MakeField("pinst_list", "InstanceList", QFT_OTHER), |
1235 |
GQ_INST, _GetSortedList(group_to_instances)), |
1236 |
]) |
1237 |
|
1238 |
fields.extend(_GetItemTimestampFields(GQ_CONFIG)) |
1239 |
|
1240 |
return _PrepareFieldList(fields)
|
1241 |
|
1242 |
|
1243 |
#: Fields available for node queries
|
1244 |
NODE_FIELDS = _BuildNodeFields() |
1245 |
|
1246 |
#: Fields available for instance queries
|
1247 |
INSTANCE_FIELDS = _BuildInstanceFields() |
1248 |
|
1249 |
#: Fields available for lock queries
|
1250 |
LOCK_FIELDS = _BuildLockFields() |
1251 |
|
1252 |
#: Fields available for node group queries
|
1253 |
GROUP_FIELDS = _BuildGroupFields() |
1254 |
|
1255 |
#: All available field lists
|
1256 |
ALL_FIELD_LISTS = [NODE_FIELDS, INSTANCE_FIELDS, LOCK_FIELDS, GROUP_FIELDS] |