Synnefo » snf-ganeti

#!/usr/bin/python

#

# Copyright (C) 2010, 2011 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.

"""Script for testing ganeti.qlang"""

import unittest

import string

from ganeti import utils

from ganeti import errors

from ganeti import qlang

from ganeti import query

import testutils

class TestMakeSimpleFilter(unittest.TestCase):

  def _Test(self, field, names, expected, parse_exp=None):

    if parse_exp is None:

      parse_exp = names

    qfilter = qlang.MakeSimpleFilter(field, names)

    self.assertEqual(qfilter, expected)

  def test(self):

    self._Test("name", None, None, parse_exp=[])

    self._Test("name", [], None)

    self._Test("name", ["node1.example.com"],

               ["|", ["=", "name", "node1.example.com"]])

    self._Test("xyz", ["a", "b", "c"],

               ["|", ["=", "xyz", "a"], ["=", "xyz", "b"], ["=", "xyz", "c"]])

class TestParseFilter(unittest.TestCase):

  def setUp(self):

    self.parser = qlang.BuildFilterParser()

  def _Test(self, qfilter, expected, expect_filter=True):

    self.assertEqual(qlang.MakeFilter([qfilter], not expect_filter), expected)

    self.assertEqual(qlang.ParseFilter(qfilter, parser=self.parser), expected)

  def test(self):

    self._Test("name==\"foobar\"", [qlang.OP_EQUAL, "name", "foobar"])

    self._Test("name=='foobar'", [qlang.OP_EQUAL, "name", "foobar"])

    self._Test("valA==1 and valB==2 or valC==3",

               [qlang.OP_OR,

                [qlang.OP_AND, [qlang.OP_EQUAL, "valA", 1],

                               [qlang.OP_EQUAL, "valB", 2]],

                [qlang.OP_EQUAL, "valC", 3]])

    self._Test(("(name\n==\"foobar\") and (xyz==\"va)ue\" and k == 256 or"

                " x ==\t\"y\"\n) and mc"),

               [qlang.OP_AND,

                [qlang.OP_EQUAL, "name", "foobar"],

                [qlang.OP_OR,

                 [qlang.OP_AND, [qlang.OP_EQUAL, "xyz", "va)ue"],

                                [qlang.OP_EQUAL, "k", 256]],

                 [qlang.OP_EQUAL, "x", "y"]],

                [qlang.OP_TRUE, "mc"]])

    self._Test("(xyz==\"v\" or k == 256 and x == \"y\")",

               [qlang.OP_OR,

                [qlang.OP_EQUAL, "xyz", "v"],

                [qlang.OP_AND, [qlang.OP_EQUAL, "k", 256],

                               [qlang.OP_EQUAL, "x", "y"]]])

    self._Test("valA==1 and valB==2 and valC==3",

               [qlang.OP_AND, [qlang.OP_EQUAL, "valA", 1],

                              [qlang.OP_EQUAL, "valB", 2],

                              [qlang.OP_EQUAL, "valC", 3]])

    self._Test("master or field",

               [qlang.OP_OR, [qlang.OP_TRUE, "master"],

                             [qlang.OP_TRUE, "field"]])

    self._Test("mem == 128", [qlang.OP_EQUAL, "mem", 128])

    self._Test("negfield != -1", [qlang.OP_NOT_EQUAL, "negfield", -1])

    self._Test("master", [qlang.OP_TRUE, "master"],

               expect_filter=False)

    self._Test("not master", [qlang.OP_NOT, [qlang.OP_TRUE, "master"]])

    for op in ["not", "and", "or"]:

      self._Test("%sxyz" % op, [qlang.OP_TRUE, "%sxyz" % op],

                 expect_filter=False)

      self._Test("not %sxyz" % op,

                 [qlang.OP_NOT, [qlang.OP_TRUE, "%sxyz" % op]])

      self._Test("  not \t%sfoo" % op,

                 [qlang.OP_NOT, [qlang.OP_TRUE, "%sfoo" % op]])

      self._Test("%sname =~ m/abc/" % op,

                 [qlang.OP_REGEXP, "%sname" % op, "abc"])

    self._Test("master and not other",

               [qlang.OP_AND, [qlang.OP_TRUE, "master"],

                              [qlang.OP_NOT, [qlang.OP_TRUE, "other"]]])

    self._Test("not (master or other == 4)",

               [qlang.OP_NOT,

                [qlang.OP_OR, [qlang.OP_TRUE, "master"],

                              [qlang.OP_EQUAL, "other", 4]]])

    self._Test("some==\"val\\\"ue\"", [qlang.OP_EQUAL, "some", "val\\\"ue"])

    self._Test("123 in ips", [qlang.OP_CONTAINS, "ips", 123])

    self._Test("99 not in ips", [qlang.OP_NOT, [qlang.OP_CONTAINS, "ips", 99]])

    self._Test("\"a\" in valA and \"b\" not in valB",

               [qlang.OP_AND, [qlang.OP_CONTAINS, "valA", "a"],

                              [qlang.OP_NOT, [qlang.OP_CONTAINS, "valB", "b"]]])

    self._Test("name =~ m/test/", [qlang.OP_REGEXP, "name", "test"])

    self._Test("name =~ m/^node.*example.com$/i",

               [qlang.OP_REGEXP, "name", "(?i)^node.*example.com$"])

    self._Test("(name =~ m/^node.*example.com$/s and master) or pip =~ |^3.*|",

               [qlang.OP_OR,

                [qlang.OP_AND,

                 [qlang.OP_REGEXP, "name", "(?s)^node.*example.com$"],

                 [qlang.OP_TRUE, "master"]],

                [qlang.OP_REGEXP, "pip", "^3.*"]])

    for flags in ["si", "is", "ssss", "iiiisiii"]:

      self._Test("name =~ m/gi/%s" % flags,

                 [qlang.OP_REGEXP, "name", "(?%s)gi" % "".join(sorted(flags))])

    for i in qlang._KNOWN_REGEXP_DELIM:

      self._Test("name =~ m%stest%s" % (i, i),

                 [qlang.OP_REGEXP, "name", "test"])

      self._Test("name !~ m%stest%s" % (i, i),

                 [qlang.OP_NOT, [qlang.OP_REGEXP, "name", "test"]])

      self._Test("not\tname =~ m%stest%s" % (i, i),

                 [qlang.OP_NOT, [qlang.OP_REGEXP, "name", "test"]])

      self._Test("notname =~ m%stest%s" % (i, i),

                 [qlang.OP_REGEXP, "notname", "test"])

    self._Test("name =* '*.site'",

               [qlang.OP_REGEXP, "name", utils.DnsNameGlobPattern("*.site")])

    self._Test("field !* '*.example.*'",

               [qlang.OP_NOT, [qlang.OP_REGEXP, "field",

                               utils.DnsNameGlobPattern("*.example.*")]])

  def testAllFields(self):

    for name in frozenset(i for d in query.ALL_FIELD_LISTS for i in d.keys()):

      self._Test("%s == \"value\"" % name, [qlang.OP_EQUAL, name, "value"])

  def testError(self):

    # Invalid field names, meaning no boolean check is done

    tests = ["#invalid!filter#", "m/x/,"]

    # Unknown regexp flag

    tests.append("name=~m#a#g")

    # Incomplete regexp group

    tests.append("name=~^[^")

    # Valid flag, but in uppercase

    tests.append("asdf =~ m|abc|I")

    # Non-matching regexp delimiters

    tests.append("name =~ /foobarbaz#")

    for qfilter in tests:

      try:

        qlang.ParseFilter(qfilter, parser=self.parser)

      except errors.QueryFilterParseError, err:

        self.assertEqual(len(err.GetDetails()), 3)

      else:

        self.fail("Invalid filter '%s' did not raise exception" % qfilter)

class TestMakeFilter(unittest.TestCase):

  def testNoNames(self):

    self.assertEqual(qlang.MakeFilter([], False), None)

    self.assertEqual(qlang.MakeFilter(None, False), None)

  def testPlainNames(self):

    self.assertEqual(qlang.MakeFilter(["web1", "web2"], False),

                     [qlang.OP_OR, [qlang.OP_EQUAL, "name", "web1"],

                                   [qlang.OP_EQUAL, "name", "web2"]])

  def testForcedFilter(self):

    for i in [None, [], ["1", "2"], ["", "", ""], ["a", "b", "c", "d"]]:

      self.assertRaises(errors.OpPrereqError, qlang.MakeFilter, i, True)

    # Glob pattern shouldn't parse as filter

    self.assertRaises(errors.QueryFilterParseError,

                      qlang.MakeFilter, ["*.site"], True)

    # Plain name parses as boolean filter

    self.assertEqual(qlang.MakeFilter(["web1"], True), [qlang.OP_TRUE, "web1"])

  def testFilter(self):

    self.assertEqual(qlang.MakeFilter(["foo/bar"], False),

                     [qlang.OP_TRUE, "foo/bar"])

    self.assertEqual(qlang.MakeFilter(["foo=='bar'"], False),

                     [qlang.OP_EQUAL, "foo", "bar"])

    self.assertEqual(qlang.MakeFilter(["field=*'*.site'"], False),

                     [qlang.OP_REGEXP, "field",

                      utils.DnsNameGlobPattern("*.site")])

    # Plain name parses as name filter, not boolean

    for name in ["node1", "n-o-d-e", "n_o_d_e", "node1.example.com",

                 "node1.example.com."]:

      self.assertEqual(qlang.MakeFilter([name], False),

                       [qlang.OP_OR, [qlang.OP_EQUAL, "name", name]])

    # Invalid filters

    for i in ["foo==bar", "foo+=1"]:

      self.assertRaises(errors.QueryFilterParseError,

                        qlang.MakeFilter, [i], False)

  def testGlob(self):

    self.assertEqual(qlang.MakeFilter(["*.site"], False),

                     [qlang.OP_OR, [qlang.OP_REGEXP, "name",

                                    utils.DnsNameGlobPattern("*.site")]])

    self.assertEqual(qlang.MakeFilter(["web?.example"], False),

                     [qlang.OP_OR, [qlang.OP_REGEXP, "name",

                                    utils.DnsNameGlobPattern("web?.example")]])

    self.assertEqual(qlang.MakeFilter(["*.a", "*.b", "?.c"], False),

                     [qlang.OP_OR,

                      [qlang.OP_REGEXP, "name",

                       utils.DnsNameGlobPattern("*.a")],

                      [qlang.OP_REGEXP, "name",

                       utils.DnsNameGlobPattern("*.b")],

                      [qlang.OP_REGEXP, "name",

                       utils.DnsNameGlobPattern("?.c")]])

if __name__ == "__main__":

  testutils.GanetiTestProgram()