def testComplexSelect(self):
query = ("(SELECT proc.parent.pid AS ppid, proc.pid FROM pslist(10) "
"WHERE COUNT(proc.open_files) > 10) and True")
expected = ast.Intersection(
ast.Map(
ast.Filter(
ast.Apply(ast.Var("pslist"), ast.Literal(10)),
ast.StrictOrderedSet(
ast.Apply(
ast.Var("COUNT"),
ast.Resolve(ast.Var("proc"),
ast.Literal("open_files"))),
ast.Literal(10))),
ast.Bind(
ast.Pair(
ast.Literal("ppid"),
ast.Resolve(
ast.Resolve(ast.Var("proc"),
ast.Literal("parent")),
ast.Literal("pid"))),
ast.Pair(ast.Literal("pid"),
ast.Resolve(ast.Var("proc"),
ast.Literal("pid"))))),
ast.Literal(True))
self.assertQueryMatches(query, expected)
def testSubscript(self):
self.assertQueryMatches("d['foo']",
ast.Select(ast.Var("d"), ast.Literal("foo")))
self.assertQueryMatches(
"d['foo'] + 10",
ast.Sum(ast.Select(ast.Var("d"), ast.Literal("foo")),
ast.Literal(10)))
self.assertQueryMatches(
"obj.props[0]",
ast.Select(ast.Resolve(ast.Var("obj"), ast.Literal("props")),
ast.Literal(0)))
self.assertQueryMatches(
"obj.props[0].foo",
ast.Resolve(
ast.Select(ast.Resolve(ast.Var("obj"), ast.Literal("props")),
ast.Literal(0)), ast.Literal("foo")))
self.assertQueryMatches(
"obj.props[10 + 10].foo",
ast.Resolve(
ast.Select(ast.Resolve(ast.Var("obj"), ast.Literal("props")),
ast.Sum(ast.Literal(10), ast.Literal(10))),
ast.Literal("foo")))
self.assertQueryMatches(
"w['x'][y[5] + 5] * 10",
ast.Product(
ast.Select(
ast.Select(ast.Var("w"), ast.Literal("x")),
ast.Sum(ast.Select(ast.Var("y"), ast.Literal(5)),
ast.Literal(5))), ast.Literal(10)))
def testSelectWhat(self):
self.assertQueryMatches(
"SELECT proc.parent.pid AS ppid,"
"proc.pid,"
"'foo',"
"asdate(proc.starttime),"
"proc.fd[5]"
"FROM pslist()",
ast.Map(
ast.Apply(ast.Var("pslist")),
ast.Bind(
ast.Pair(
ast.Literal("ppid"),
ast.Resolve(
ast.Resolve(ast.Var("proc"),
ast.Literal("parent")),
ast.Literal("pid"))),
ast.Pair(ast.Literal("pid"),
ast.Resolve(ast.Var("proc"), ast.Literal("pid"))),
ast.Pair(ast.Literal("column_2"), ast.Literal("foo")),
ast.Pair(
ast.Literal("asdate"),
ast.Apply(
ast.Var("asdate"),
ast.Resolve(ast.Var("proc"),
ast.Literal("starttime")))),
ast.Pair(
ast.Literal("fd_5"),
ast.Select(
ast.Resolve(ast.Var("proc"), ast.Literal("fd")),
ast.Literal(5))))))
def testInfix(self):
self.assertQueryMatches(
"x == 'foo' and y.z contains 'bar'",
ast.Intersection(
ast.Equivalence(ast.Var("x"), ast.Literal("foo")),
ast.Membership(ast.Literal("bar"),
ast.Resolve(ast.Var("y"), ast.Literal("z")))))
def testInfix(self):
self.assertQueryMatches("x + y", ast.Sum(ast.Var("x"), ast.Var("y")))
self.assertQueryMatches(
"w.x.y.z",
ast.Resolve(
ast.Resolve(ast.Resolve(ast.Var("w"), ast.Literal("x")),
ast.Literal("y")), ast.Literal("z")))
# Operator precedence should work correctly.
self.assertQueryMatches(
"x + y * z",
ast.Sum(ast.Var("x"), ast.Product(ast.Var("y"), ast.Var("z"))))
self.assertQueryMatches(
"x * y + z",
ast.Sum(ast.Product(ast.Var("x"), ast.Var("y")), ast.Var("z")))
def NormalizeResolve(x, y, **kwargs):
if isinstance(y, ast.Var):
literal_y = ast.Literal(y.value, start=y.start, end=y.end,
source=y.source)
else:
raise TypeError("Type of RHS must be Var. Got %r." % y)
return ast.Resolve(x, literal_y, **kwargs)
def testFullSelect(self):
query = ("SELECT proc.parent.pid AS ppid_column, proc.pid"
" FROM pslist(pid: 10, ppid: 20)"
" WHERE count(proc.open_files) > 10"
" ORDER BY proc.command DESC"
" LIMIT 10 - 9 OFFSET add(5, 10)")
expected = ast.Map(
ast.Apply(
ast.Var("take"), ast.Difference(ast.Literal(10),
ast.Literal(9)),
ast.Apply(
ast.Var("drop"),
ast.Apply(ast.Var("add"), ast.Literal(5), ast.Literal(10)),
ast.Apply(
ast.Var("reverse"),
ast.Sort(
ast.Filter(
ast.Apply(
ast.Var("pslist"),
ast.Pair(ast.Var("pid"), ast.Literal(10)),
ast.Pair(ast.Var("ppid"),
ast.Literal(20))),
ast.StrictOrderedSet(
ast.Literal(10),
ast.Apply(
ast.Var("count"),
ast.Resolve(
ast.Var("proc"),
ast.Literal("open_files"))),
)),
ast.Resolve(ast.Var("proc"),
ast.Literal("command")))))),
ast.Bind(
ast.Pair(
ast.Literal("ppid_column"),
ast.Resolve(
ast.Resolve(ast.Var("proc"), ast.Literal("parent")),
ast.Literal("pid"))),
ast.Pair(ast.Literal("pid"),
ast.Resolve(ast.Var("proc"), ast.Literal("pid")))))
self.assertQueryMatches(query, expected)
def testBuiltins(self):
self.assertQueryMatches(
"filter(pslist(), proc.pid == 1)",
ast.Filter(
ast.Apply(ast.Var("pslist")),
ast.Equivalence(
ast.Resolve(ast.Var("proc"), ast.Literal("pid")),
ast.Literal(1))))
self.assertQueryMatches(
"map(pslist(), [proc.pid, proc['command']])",
ast.Map(
ast.Apply(ast.Var("pslist")),
ast.Tuple(ast.Resolve(ast.Var("proc"), ast.Literal("pid")),
ast.Select(ast.Var("proc"),
ast.Literal("command")))))
self.assertQueryMatches(
"bind(x: 1, y: 2)",
ast.Bind(ast.Pair(ast.Var("x"), ast.Literal(1)),
ast.Pair(ast.Var("y"), ast.Literal(2))))
self.assertQueryRaises("bind (x: 1, y: 2)")
