prometheus/promql/parse_test.go

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// Copyright 2015 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package promql
import (
"math"
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"strings"
"testing"
"time"
"github.com/pkg/errors"
"github.com/prometheus/common/model"
"github.com/prometheus/prometheus/pkg/labels"
"github.com/prometheus/prometheus/util/testutil"
)
var testExpr = []struct {
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input string // The input to be parsed.
expected Expr // The expected expression AST.
fail bool // Whether parsing is supposed to fail.
errMsg string // If not empty the parsing error has to contain this string.
}{
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// Scalars and scalar-to-scalar operations.
{
input: "1",
expected: &NumberLiteral{1},
}, {
input: "+Inf",
expected: &NumberLiteral{math.Inf(1)},
}, {
input: "-Inf",
expected: &NumberLiteral{math.Inf(-1)},
}, {
input: ".5",
expected: &NumberLiteral{0.5},
}, {
input: "5.",
expected: &NumberLiteral{5},
}, {
input: "123.4567",
expected: &NumberLiteral{123.4567},
}, {
input: "5e-3",
expected: &NumberLiteral{0.005},
}, {
input: "5e3",
expected: &NumberLiteral{5000},
}, {
input: "0xc",
expected: &NumberLiteral{12},
}, {
input: "0755",
expected: &NumberLiteral{493},
}, {
input: "+5.5e-3",
expected: &NumberLiteral{0.0055},
}, {
input: "-0755",
expected: &NumberLiteral{-493},
}, {
input: "1 + 1",
expected: &BinaryExpr{ADD, &NumberLiteral{1}, &NumberLiteral{1}, nil, false},
}, {
input: "1 - 1",
expected: &BinaryExpr{SUB, &NumberLiteral{1}, &NumberLiteral{1}, nil, false},
}, {
input: "1 * 1",
expected: &BinaryExpr{MUL, &NumberLiteral{1}, &NumberLiteral{1}, nil, false},
}, {
input: "1 % 1",
expected: &BinaryExpr{MOD, &NumberLiteral{1}, &NumberLiteral{1}, nil, false},
}, {
input: "1 / 1",
expected: &BinaryExpr{DIV, &NumberLiteral{1}, &NumberLiteral{1}, nil, false},
}, {
input: "1 == bool 1",
expected: &BinaryExpr{EQL, &NumberLiteral{1}, &NumberLiteral{1}, nil, true},
}, {
input: "1 != bool 1",
expected: &BinaryExpr{NEQ, &NumberLiteral{1}, &NumberLiteral{1}, nil, true},
}, {
input: "1 > bool 1",
expected: &BinaryExpr{GTR, &NumberLiteral{1}, &NumberLiteral{1}, nil, true},
}, {
input: "1 >= bool 1",
expected: &BinaryExpr{GTE, &NumberLiteral{1}, &NumberLiteral{1}, nil, true},
}, {
input: "1 < bool 1",
expected: &BinaryExpr{LSS, &NumberLiteral{1}, &NumberLiteral{1}, nil, true},
}, {
input: "1 <= bool 1",
expected: &BinaryExpr{LTE, &NumberLiteral{1}, &NumberLiteral{1}, nil, true},
}, {
input: "-1^2",
expected: &UnaryExpr{
Op: SUB,
Expr: &BinaryExpr{
Op: POW,
LHS: &NumberLiteral{1},
RHS: &NumberLiteral{2},
},
},
}, {
input: "-1*2",
expected: &BinaryExpr{
Op: MUL,
LHS: &NumberLiteral{-1},
RHS: &NumberLiteral{2},
},
}, {
input: "-1+2",
expected: &BinaryExpr{
Op: ADD,
LHS: &NumberLiteral{-1},
RHS: &NumberLiteral{2},
},
}, {
input: "-1^-2",
expected: &UnaryExpr{
Op: SUB,
Expr: &BinaryExpr{
Op: POW,
LHS: &NumberLiteral{1},
RHS: &NumberLiteral{-2},
},
},
}, {
input: "+1 + -2 * 1",
expected: &BinaryExpr{
Op: ADD,
LHS: &NumberLiteral{1},
RHS: &BinaryExpr{
Op: MUL, LHS: &NumberLiteral{-2}, RHS: &NumberLiteral{1},
},
},
}, {
input: "1 + 2/(3*1)",
expected: &BinaryExpr{
Op: ADD,
LHS: &NumberLiteral{1},
RHS: &BinaryExpr{
Op: DIV,
LHS: &NumberLiteral{2},
RHS: &ParenExpr{&BinaryExpr{
Op: MUL, LHS: &NumberLiteral{3}, RHS: &NumberLiteral{1},
}},
},
},
}, {
input: "1 < bool 2 - 1 * 2",
expected: &BinaryExpr{
Op: LSS,
ReturnBool: true,
LHS: &NumberLiteral{1},
RHS: &BinaryExpr{
Op: SUB,
LHS: &NumberLiteral{2},
RHS: &BinaryExpr{
Op: MUL, LHS: &NumberLiteral{1}, RHS: &NumberLiteral{2},
},
},
},
}, {
input: "-some_metric",
expected: &UnaryExpr{
Op: SUB,
Expr: &VectorSelector{
Name: "some_metric",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"),
},
},
},
}, {
input: "+some_metric",
expected: &UnaryExpr{
Op: ADD,
Expr: &VectorSelector{
Name: "some_metric",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"),
},
},
},
}, {
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input: "",
fail: true,
errMsg: "no expression found in input",
}, {
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input: "# just a comment\n\n",
fail: true,
errMsg: "no expression found in input",
}, {
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input: "1+",
fail: true,
errMsg: "unexpected end of input",
}, {
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input: ".",
fail: true,
errMsg: "unexpected character: '.'",
}, {
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input: "2.5.",
fail: true,
errMsg: "unexpected character: '.'",
}, {
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input: "100..4",
fail: true,
errMsg: `unexpected number ".4"`,
}, {
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input: "0deadbeef",
fail: true,
errMsg: "bad number or duration syntax: \"0de\"",
}, {
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input: "1 /",
fail: true,
errMsg: "unexpected end of input",
}, {
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input: "*1",
fail: true,
errMsg: "unexpected <op:*>",
}, {
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input: "(1))",
fail: true,
errMsg: "unexpected right parenthesis ')'",
}, {
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input: "((1)",
fail: true,
errMsg: "unclosed left parenthesis",
}, {
input: "999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999",
fail: true,
errMsg: "out of range",
}, {
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input: "(",
fail: true,
errMsg: "unclosed left parenthesis",
}, {
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input: "1 and 1",
fail: true,
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errMsg: "set operator \"and\" not allowed in binary scalar expression",
}, {
input: "1 == 1",
fail: true,
errMsg: "1:7: parse error: comparisons between scalars must use BOOL modifier",
}, {
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input: "1 or 1",
fail: true,
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errMsg: "set operator \"or\" not allowed in binary scalar expression",
}, {
input: "1 unless 1",
fail: true,
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errMsg: "set operator \"unless\" not allowed in binary scalar expression",
}, {
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input: "1 !~ 1",
fail: true,
errMsg: `unexpected character after '!': '~'`,
}, {
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input: "1 =~ 1",
fail: true,
errMsg: `unexpected character after '=': '~'`,
}, {
input: `-"string"`,
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fail: true,
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errMsg: `unary expression only allowed on expressions of type scalar or instant vector, got "string"`,
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}, {
input: `-test[5m]`,
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fail: true,
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errMsg: `unary expression only allowed on expressions of type scalar or instant vector, got "range vector"`,
}, {
input: `*test`,
fail: true,
errMsg: "unexpected <op:*>",
}, {
input: "1 offset 1d",
fail: true,
errMsg: "offset modifier must be preceded by an instant or range selector",
}, {
input: "foo offset 1s offset 2s",
fail: true,
errMsg: "offset may not be set multiple times",
}, {
input: "a - on(b) ignoring(c) d",
fail: true,
errMsg: "1:11: parse error: unexpected <ignoring>",
},
// Vector binary operations.
{
input: "foo * bar",
expected: &BinaryExpr{
Op: MUL,
LHS: &VectorSelector{
Name: "foo",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
RHS: &VectorSelector{
Name: "bar",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"),
},
},
VectorMatching: &VectorMatching{Card: CardOneToOne},
},
}, {
input: "foo == 1",
expected: &BinaryExpr{
Op: EQL,
LHS: &VectorSelector{
Name: "foo",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
RHS: &NumberLiteral{1},
},
}, {
input: "foo == bool 1",
expected: &BinaryExpr{
Op: EQL,
LHS: &VectorSelector{
Name: "foo",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
RHS: &NumberLiteral{1},
ReturnBool: true,
},
}, {
input: "2.5 / bar",
expected: &BinaryExpr{
Op: DIV,
LHS: &NumberLiteral{2.5},
RHS: &VectorSelector{
Name: "bar",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"),
},
},
},
}, {
input: "foo and bar",
expected: &BinaryExpr{
Op: LAND,
LHS: &VectorSelector{
Name: "foo",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
RHS: &VectorSelector{
Name: "bar",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"),
},
},
VectorMatching: &VectorMatching{Card: CardManyToMany},
},
}, {
input: "foo or bar",
expected: &BinaryExpr{
Op: LOR,
LHS: &VectorSelector{
Name: "foo",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
RHS: &VectorSelector{
Name: "bar",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"),
},
},
VectorMatching: &VectorMatching{Card: CardManyToMany},
},
}, {
input: "foo unless bar",
expected: &BinaryExpr{
Op: LUNLESS,
LHS: &VectorSelector{
Name: "foo",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
RHS: &VectorSelector{
Name: "bar",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"),
},
},
VectorMatching: &VectorMatching{Card: CardManyToMany},
},
}, {
// Test and/or precedence and reassigning of operands.
input: "foo + bar or bla and blub",
expected: &BinaryExpr{
Op: LOR,
LHS: &BinaryExpr{
Op: ADD,
LHS: &VectorSelector{
Name: "foo",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
RHS: &VectorSelector{
Name: "bar",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"),
},
},
VectorMatching: &VectorMatching{Card: CardOneToOne},
},
RHS: &BinaryExpr{
Op: LAND,
LHS: &VectorSelector{
Name: "bla",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bla"),
},
},
RHS: &VectorSelector{
Name: "blub",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "blub"),
},
},
VectorMatching: &VectorMatching{Card: CardManyToMany},
},
VectorMatching: &VectorMatching{Card: CardManyToMany},
},
}, {
// Test and/or/unless precedence.
input: "foo and bar unless baz or qux",
expected: &BinaryExpr{
Op: LOR,
LHS: &BinaryExpr{
Op: LUNLESS,
LHS: &BinaryExpr{
Op: LAND,
LHS: &VectorSelector{
Name: "foo",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
RHS: &VectorSelector{
Name: "bar",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"),
},
},
VectorMatching: &VectorMatching{Card: CardManyToMany},
},
RHS: &VectorSelector{
Name: "baz",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "baz"),
},
},
VectorMatching: &VectorMatching{Card: CardManyToMany},
},
RHS: &VectorSelector{
Name: "qux",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "qux"),
},
},
VectorMatching: &VectorMatching{Card: CardManyToMany},
},
}, {
// Test precedence and reassigning of operands.
input: "bar + on(foo) bla / on(baz, buz) group_right(test) blub",
expected: &BinaryExpr{
Op: ADD,
LHS: &VectorSelector{
Name: "bar",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"),
},
},
RHS: &BinaryExpr{
Op: DIV,
LHS: &VectorSelector{
Name: "bla",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bla"),
},
},
RHS: &VectorSelector{
Name: "blub",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "blub"),
},
},
VectorMatching: &VectorMatching{
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Card: CardOneToMany,
MatchingLabels: []string{"baz", "buz"},
On: true,
Include: []string{"test"},
},
},
VectorMatching: &VectorMatching{
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Card: CardOneToOne,
MatchingLabels: []string{"foo"},
On: true,
},
},
}, {
input: "foo * on(test,blub) bar",
expected: &BinaryExpr{
Op: MUL,
LHS: &VectorSelector{
Name: "foo",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
RHS: &VectorSelector{
Name: "bar",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"),
},
},
VectorMatching: &VectorMatching{
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Card: CardOneToOne,
MatchingLabels: []string{"test", "blub"},
On: true,
},
},
}, {
input: "foo * on(test,blub) group_left bar",
expected: &BinaryExpr{
Op: MUL,
LHS: &VectorSelector{
Name: "foo",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
RHS: &VectorSelector{
Name: "bar",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"),
},
},
VectorMatching: &VectorMatching{
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Card: CardManyToOne,
MatchingLabels: []string{"test", "blub"},
On: true,
},
},
}, {
input: "foo and on(test,blub) bar",
expected: &BinaryExpr{
Op: LAND,
LHS: &VectorSelector{
Name: "foo",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
RHS: &VectorSelector{
Name: "bar",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"),
},
},
VectorMatching: &VectorMatching{
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Card: CardManyToMany,
MatchingLabels: []string{"test", "blub"},
On: true,
},
},
}, {
input: "foo and on() bar",
expected: &BinaryExpr{
Op: LAND,
LHS: &VectorSelector{
Name: "foo",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
RHS: &VectorSelector{
Name: "bar",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"),
},
},
VectorMatching: &VectorMatching{
Card: CardManyToMany,
MatchingLabels: []string{},
On: true,
},
},
}, {
input: "foo and ignoring(test,blub) bar",
expected: &BinaryExpr{
Op: LAND,
LHS: &VectorSelector{
Name: "foo",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
RHS: &VectorSelector{
Name: "bar",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"),
},
},
VectorMatching: &VectorMatching{
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Card: CardManyToMany,
MatchingLabels: []string{"test", "blub"},
},
},
}, {
input: "foo and ignoring() bar",
expected: &BinaryExpr{
Op: LAND,
LHS: &VectorSelector{
Name: "foo",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
RHS: &VectorSelector{
Name: "bar",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"),
},
},
VectorMatching: &VectorMatching{
Card: CardManyToMany,
MatchingLabels: []string{},
},
},
}, {
input: "foo unless on(bar) baz",
expected: &BinaryExpr{
Op: LUNLESS,
LHS: &VectorSelector{
Name: "foo",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
RHS: &VectorSelector{
Name: "baz",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "baz"),
},
},
VectorMatching: &VectorMatching{
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Card: CardManyToMany,
MatchingLabels: []string{"bar"},
On: true,
},
},
}, {
input: "foo / on(test,blub) group_left(bar) bar",
expected: &BinaryExpr{
Op: DIV,
LHS: &VectorSelector{
Name: "foo",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
RHS: &VectorSelector{
Name: "bar",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"),
},
},
VectorMatching: &VectorMatching{
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Card: CardManyToOne,
MatchingLabels: []string{"test", "blub"},
On: true,
Include: []string{"bar"},
},
},
}, {
input: "foo / ignoring(test,blub) group_left(blub) bar",
expected: &BinaryExpr{
Op: DIV,
LHS: &VectorSelector{
Name: "foo",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
RHS: &VectorSelector{
Name: "bar",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"),
},
},
VectorMatching: &VectorMatching{
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Card: CardManyToOne,
MatchingLabels: []string{"test", "blub"},
Include: []string{"blub"},
},
},
}, {
input: "foo / ignoring(test,blub) group_left(bar) bar",
expected: &BinaryExpr{
Op: DIV,
LHS: &VectorSelector{
Name: "foo",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
RHS: &VectorSelector{
Name: "bar",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"),
},
},
VectorMatching: &VectorMatching{
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Card: CardManyToOne,
MatchingLabels: []string{"test", "blub"},
Include: []string{"bar"},
},
},
}, {
input: "foo - on(test,blub) group_right(bar,foo) bar",
expected: &BinaryExpr{
Op: SUB,
LHS: &VectorSelector{
Name: "foo",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
RHS: &VectorSelector{
Name: "bar",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"),
},
},
VectorMatching: &VectorMatching{
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Card: CardOneToMany,
MatchingLabels: []string{"test", "blub"},
Include: []string{"bar", "foo"},
On: true,
},
},
}, {
input: "foo - ignoring(test,blub) group_right(bar,foo) bar",
expected: &BinaryExpr{
Op: SUB,
LHS: &VectorSelector{
Name: "foo",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
RHS: &VectorSelector{
Name: "bar",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"),
},
},
VectorMatching: &VectorMatching{
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Card: CardOneToMany,
MatchingLabels: []string{"test", "blub"},
Include: []string{"bar", "foo"},
},
},
}, {
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input: "foo and 1",
fail: true,
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errMsg: "set operator \"and\" not allowed in binary scalar expression",
}, {
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input: "1 and foo",
fail: true,
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errMsg: "set operator \"and\" not allowed in binary scalar expression",
}, {
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input: "foo or 1",
fail: true,
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errMsg: "set operator \"or\" not allowed in binary scalar expression",
}, {
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input: "1 or foo",
fail: true,
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errMsg: "set operator \"or\" not allowed in binary scalar expression",
}, {
input: "foo unless 1",
fail: true,
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errMsg: "set operator \"unless\" not allowed in binary scalar expression",
}, {
input: "1 unless foo",
fail: true,
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errMsg: "set operator \"unless\" not allowed in binary scalar expression",
}, {
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input: "1 or on(bar) foo",
fail: true,
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errMsg: "vector matching only allowed between instant vectors",
}, {
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input: "foo == on(bar) 10",
fail: true,
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errMsg: "vector matching only allowed between instant vectors",
}, {
input: "foo + group_left(baz) bar",
fail: true,
errMsg: "unexpected <group_left>",
}, {
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input: "foo and on(bar) group_left(baz) bar",
fail: true,
errMsg: "no grouping allowed for \"and\" operation",
}, {
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input: "foo and on(bar) group_right(baz) bar",
fail: true,
errMsg: "no grouping allowed for \"and\" operation",
}, {
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input: "foo or on(bar) group_left(baz) bar",
fail: true,
errMsg: "no grouping allowed for \"or\" operation",
}, {
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input: "foo or on(bar) group_right(baz) bar",
fail: true,
errMsg: "no grouping allowed for \"or\" operation",
}, {
input: "foo unless on(bar) group_left(baz) bar",
fail: true,
errMsg: "no grouping allowed for \"unless\" operation",
}, {
input: "foo unless on(bar) group_right(baz) bar",
fail: true,
errMsg: "no grouping allowed for \"unless\" operation",
}, {
input: `http_requests{group="production"} + on(instance) group_left(job,instance) cpu_count{type="smp"}`,
fail: true,
errMsg: "label \"instance\" must not occur in ON and GROUP clause at once",
}, {
input: "foo + bool bar",
fail: true,
errMsg: "bool modifier can only be used on comparison operators",
}, {
input: "foo + bool 10",
fail: true,
errMsg: "bool modifier can only be used on comparison operators",
}, {
input: "foo and bool 10",
fail: true,
errMsg: "bool modifier can only be used on comparison operators",
},
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// Test Vector selector.
{
input: "foo",
expected: &VectorSelector{
Name: "foo",
Offset: 0,
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
}, {
input: "foo offset 5m",
expected: &VectorSelector{
Name: "foo",
Offset: 5 * time.Minute,
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
}, {
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input: `foo:bar{a="bc"}`,
expected: &VectorSelector{
Name: "foo:bar",
Offset: 0,
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, "a", "bc"),
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo:bar"),
},
},
}, {
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input: `foo{NaN='bc'}`,
expected: &VectorSelector{
Name: "foo",
Offset: 0,
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, "NaN", "bc"),
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
}, {
input: `foo{bar='}'}`,
expected: &VectorSelector{
Name: "foo",
Offset: 0,
LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, "bar", "}"),
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
}, {
input: `foo{a="b", foo!="bar", test=~"test", bar!~"baz"}`,
expected: &VectorSelector{
Name: "foo",
Offset: 0,
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, "a", "b"),
mustLabelMatcher(labels.MatchNotEqual, "foo", "bar"),
mustLabelMatcher(labels.MatchRegexp, "test", "test"),
mustLabelMatcher(labels.MatchNotRegexp, "bar", "baz"),
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
}, {
input: `foo{a="b", foo!="bar", test=~"test", bar!~"baz",}`,
expected: &VectorSelector{
Name: "foo",
Offset: 0,
LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, "a", "b"),
mustLabelMatcher(labels.MatchNotEqual, "foo", "bar"),
mustLabelMatcher(labels.MatchRegexp, "test", "test"),
mustLabelMatcher(labels.MatchNotRegexp, "bar", "baz"),
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
}, {
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input: `{`,
fail: true,
errMsg: "unexpected end of input inside braces",
}, {
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input: `}`,
fail: true,
errMsg: "unexpected character: '}'",
}, {
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input: `some{`,
fail: true,
errMsg: "unexpected end of input inside braces",
}, {
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input: `some}`,
fail: true,
errMsg: "unexpected character: '}'",
}, {
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input: `some_metric{a=b}`,
fail: true,
errMsg: "unexpected identifier \"b\" in label matching, expected string",
}, {
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input: `some_metric{a:b="b"}`,
fail: true,
errMsg: "unexpected character inside braces: ':'",
}, {
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input: `foo{a*"b"}`,
fail: true,
errMsg: "unexpected character inside braces: '*'",
}, {
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input: `foo{a>="b"}`,
fail: true,
// TODO(fabxc): willingly lexing wrong tokens allows for more precise error
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// messages from the parser - consider if this is an option.
errMsg: "unexpected character inside braces: '>'",
}, {
input: "some_metric{a=\"\xff\"}",
fail: true,
errMsg: "1:15: parse error: invalid UTF-8 rune",
}, {
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input: `foo{gibberish}`,
fail: true,
errMsg: `unexpected "}" in label matching, expected label matching operator`,
}, {
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input: `foo{1}`,
fail: true,
errMsg: "unexpected character inside braces: '1'",
}, {
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input: `{}`,
fail: true,
errMsg: "vector selector must contain at least one non-empty matcher",
}, {
input: `{x=""}`,
fail: true,
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errMsg: "vector selector must contain at least one non-empty matcher",
}, {
input: `{x=~".*"}`,
fail: true,
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errMsg: "vector selector must contain at least one non-empty matcher",
}, {
input: `{x!~".+"}`,
fail: true,
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errMsg: "vector selector must contain at least one non-empty matcher",
}, {
input: `{x!="a"}`,
fail: true,
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errMsg: "vector selector must contain at least one non-empty matcher",
}, {
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input: `foo{__name__="bar"}`,
fail: true,
errMsg: `metric name must not be set twice: "foo" or "bar"`,
}, {
input: `foo{__name__= =}`,
fail: true,
errMsg: "unexpected <op:=> in label matching, expected string",
}, {
input: `foo{,}`,
fail: true,
errMsg: `unexpected "," in label matching, expected identifier or "}"`,
}, {
input: `foo{__name__ == "bar"}`,
fail: true,
errMsg: "unexpected <op:=> in label matching, expected string",
}, {
input: `foo{__name__="bar" lol}`,
fail: true,
errMsg: `unexpected identifier "lol" in label matching, expected "," or "}"`,
},
// Test matrix selector.
{
input: "test[5s]",
expected: &MatrixSelector{
Name: "test",
Offset: 0,
Range: 5 * time.Second,
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "test"),
},
},
}, {
input: "test[5m]",
expected: &MatrixSelector{
Name: "test",
Offset: 0,
Range: 5 * time.Minute,
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "test"),
},
},
}, {
input: "test[5h] OFFSET 5m",
expected: &MatrixSelector{
Name: "test",
Offset: 5 * time.Minute,
Range: 5 * time.Hour,
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "test"),
},
},
}, {
input: "test[5d] OFFSET 10s",
expected: &MatrixSelector{
Name: "test",
Offset: 10 * time.Second,
Range: 5 * 24 * time.Hour,
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "test"),
},
},
}, {
input: "test[5w] offset 2w",
expected: &MatrixSelector{
Name: "test",
Offset: 14 * 24 * time.Hour,
Range: 5 * 7 * 24 * time.Hour,
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "test"),
},
},
}, {
input: `test{a="b"}[5y] OFFSET 3d`,
expected: &MatrixSelector{
Name: "test",
Offset: 3 * 24 * time.Hour,
Range: 5 * 365 * 24 * time.Hour,
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, "a", "b"),
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "test"),
},
},
}, {
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input: `foo[5mm]`,
fail: true,
errMsg: "bad duration syntax: \"5mm\"",
}, {
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input: `foo[0m]`,
fail: true,
errMsg: "duration must be greater than 0",
}, {
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input: `foo[5m30s]`,
fail: true,
errMsg: "bad duration syntax: \"5m3\"",
}, {
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input: `foo[5m] OFFSET 1h30m`,
fail: true,
errMsg: "bad number or duration syntax: \"1h3\"",
}, {
input: `foo["5m"]`,
fail: true,
}, {
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input: `foo[]`,
fail: true,
errMsg: "missing unit character in duration",
}, {
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input: `foo[1]`,
fail: true,
errMsg: "missing unit character in duration",
}, {
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input: `some_metric[5m] OFFSET 1`,
fail: true,
errMsg: "unexpected number \"1\" in offset, expected duration",
}, {
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input: `some_metric[5m] OFFSET 1mm`,
fail: true,
errMsg: "bad number or duration syntax: \"1mm\"",
}, {
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input: `some_metric[5m] OFFSET`,
fail: true,
errMsg: "unexpected end of input in offset, expected duration",
}, {
input: `some_metric OFFSET 1m[5m]`,
fail: true,
errMsg: "1:25: parse error: no offset modifiers allowed before range",
}, {
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input: `(foo + bar)[5m]`,
fail: true,
errMsg: "1:15: parse error: ranges only allowed for vector selectors",
},
// Test aggregation.
{
input: "sum by (foo)(some_metric)",
expected: &AggregateExpr{
Op: SUM,
Expr: &VectorSelector{
Name: "some_metric",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"),
},
},
Grouping: []string{"foo"},
},
}, {
input: "avg by (foo)(some_metric)",
expected: &AggregateExpr{
Op: AVG,
Expr: &VectorSelector{
Name: "some_metric",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"),
},
},
Grouping: []string{"foo"},
},
}, {
input: "max by (foo)(some_metric)",
expected: &AggregateExpr{
Op: MAX,
Expr: &VectorSelector{
Name: "some_metric",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"),
},
},
Grouping: []string{"foo"},
},
}, {
input: "sum without (foo) (some_metric)",
expected: &AggregateExpr{
Op: SUM,
Without: true,
Expr: &VectorSelector{
Name: "some_metric",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"),
},
},
Grouping: []string{"foo"},
},
}, {
input: "sum (some_metric) without (foo)",
expected: &AggregateExpr{
Op: SUM,
Without: true,
Expr: &VectorSelector{
Name: "some_metric",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"),
},
},
Grouping: []string{"foo"},
},
}, {
input: "stddev(some_metric)",
expected: &AggregateExpr{
Op: STDDEV,
Expr: &VectorSelector{
Name: "some_metric",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"),
},
},
},
}, {
input: "stdvar by (foo)(some_metric)",
expected: &AggregateExpr{
Op: STDVAR,
Expr: &VectorSelector{
Name: "some_metric",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"),
},
},
Grouping: []string{"foo"},
},
}, {
input: "sum by ()(some_metric)",
expected: &AggregateExpr{
Op: SUM,
Expr: &VectorSelector{
Name: "some_metric",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"),
},
},
Grouping: []string{},
},
}, {
input: "sum by (foo,bar,)(some_metric)",
expected: &AggregateExpr{
Op: SUM,
Expr: &VectorSelector{
Name: "some_metric",
LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"),
},
},
Grouping: []string{"foo", "bar"},
},
}, {
input: "sum by (foo,)(some_metric)",
expected: &AggregateExpr{
Op: SUM,
Expr: &VectorSelector{
Name: "some_metric",
LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"),
},
},
Grouping: []string{"foo"},
},
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}, {
input: "topk(5, some_metric)",
expected: &AggregateExpr{
Op: TOPK,
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Expr: &VectorSelector{
Name: "some_metric",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"),
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},
},
Param: &NumberLiteral{5},
},
}, {
input: "count_values(\"value\", some_metric)",
expected: &AggregateExpr{
Op: COUNT_VALUES,
Expr: &VectorSelector{
Name: "some_metric",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"),
},
},
Param: &StringLiteral{"value"},
},
}, {
// Test usage of keywords as label names.
input: "sum without(and, by, avg, count, alert, annotations)(some_metric)",
expected: &AggregateExpr{
Op: SUM,
Without: true,
Expr: &VectorSelector{
Name: "some_metric",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"),
},
},
Grouping: []string{"and", "by", "avg", "count", "alert", "annotations"},
},
}, {
input: "sum without(==)(some_metric)",
fail: true,
errMsg: "unexpected <op:==> in grouping opts, expected label",
}, {
input: "sum without(,)(some_metric)",
fail: true,
errMsg: `unexpected "," in grouping opts, expected label`,
}, {
input: "sum without(foo,,)(some_metric)",
fail: true,
errMsg: `unexpected "," in grouping opts, expected label`,
}, {
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input: `sum some_metric by (test)`,
fail: true,
errMsg: "unexpected identifier \"some_metric\" in aggregation",
}, {
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input: `sum (some_metric) by test`,
fail: true,
errMsg: "unexpected identifier \"test\" in grouping opts",
}, {
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input: `sum (some_metric) by test`,
fail: true,
errMsg: "unexpected identifier \"test\" in grouping opts",
}, {
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input: `sum () by (test)`,
fail: true,
errMsg: "no arguments for aggregate expression provided",
}, {
2017-10-05 12:19:52 +00:00
input: "MIN keep_common (some_metric)",
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fail: true,
errMsg: "1:5: parse error: unexpected identifier \"keep_common\" in aggregation",
}, {
2017-10-05 12:19:52 +00:00
input: "MIN (some_metric) keep_common",
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fail: true,
errMsg: `unexpected identifier "keep_common"`,
}, {
input: `sum (some_metric) without (test) by (test)`,
fail: true,
errMsg: "unexpected <by>",
}, {
input: `sum without (test) (some_metric) by (test)`,
fail: true,
errMsg: "unexpected <by>",
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}, {
input: `topk(some_metric)`,
fail: true,
errMsg: "wrong number of arguments for aggregate expression provided, expected 2, got 1",
}, {
input: `topk(some_metric, other_metric)`,
fail: true,
errMsg: "1:32: parse error: expected type scalar in aggregation parameter, got instant vector",
}, {
input: `count_values(5, other_metric)`,
fail: true,
errMsg: "1:30: parse error: expected type string in aggregation parameter, got scalar",
},
// Test function calls.
{
input: "time()",
expected: &Call{
Func: mustGetFunction("time"),
Args: Expressions{},
},
}, {
input: `floor(some_metric{foo!="bar"})`,
expected: &Call{
Func: mustGetFunction("floor"),
Args: Expressions{
&VectorSelector{
Name: "some_metric",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchNotEqual, "foo", "bar"),
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"),
},
},
},
},
}, {
input: "rate(some_metric[5m])",
expected: &Call{
Func: mustGetFunction("rate"),
Args: Expressions{
&MatrixSelector{
Name: "some_metric",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"),
},
Range: 5 * time.Minute,
},
},
},
}, {
input: "round(some_metric)",
expected: &Call{
Func: mustGetFunction("round"),
Args: Expressions{
&VectorSelector{
Name: "some_metric",
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LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"),
},
},
},
},
}, {
input: "round(some_metric, 5)",
expected: &Call{
Func: mustGetFunction("round"),
Args: Expressions{
&VectorSelector{
Name: "some_metric",
2016-12-25 10:34:22 +00:00
LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"),
},
},
&NumberLiteral{5},
},
},
}, {
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input: "floor()",
fail: true,
errMsg: "expected 1 argument(s) in call to \"floor\", got 0",
}, {
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input: "floor(some_metric, other_metric)",
fail: true,
errMsg: "expected 1 argument(s) in call to \"floor\", got 2",
}, {
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input: "floor(1)",
fail: true,
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errMsg: "expected type instant vector in call to function \"floor\", got scalar",
}, {
2016-09-15 03:23:28 +00:00
input: "non_existent_function_far_bar()",
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fail: true,
2016-09-15 03:23:28 +00:00
errMsg: "unknown function with name \"non_existent_function_far_bar\"",
}, {
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input: "rate(some_metric)",
fail: true,
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errMsg: "expected type range vector in call to function \"rate\", got instant vector",
}, {
input: "label_replace(a, `b`, `c\xff`, `d`, `.*`)",
fail: true,
errMsg: "1:23: parse error: invalid UTF-8 rune",
},
2015-08-03 10:28:40 +00:00
// Fuzzing regression tests.
{
input: "-=",
fail: true,
errMsg: `unexpected "="`,
}, {
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input: "++-++-+-+-<",
fail: true,
errMsg: `unexpected <op:<>`,
}, {
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input: "e-+=/(0)",
fail: true,
errMsg: `unexpected "="`,
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},
// String quoting and escape sequence interpretation tests.
{
input: `"double-quoted string \" with escaped quote"`,
expected: &StringLiteral{
Val: "double-quoted string \" with escaped quote",
},
}, {
input: `'single-quoted string \' with escaped quote'`,
expected: &StringLiteral{
Val: "single-quoted string ' with escaped quote",
},
}, {
input: "`backtick-quoted string`",
expected: &StringLiteral{
Val: "backtick-quoted string",
},
}, {
input: `"\a\b\f\n\r\t\v\\\" - \xFF\377\u1234\U00010111\U0001011111☺"`,
expected: &StringLiteral{
Val: "\a\b\f\n\r\t\v\\\" - \xFF\377\u1234\U00010111\U0001011111☺",
},
}, {
input: `'\a\b\f\n\r\t\v\\\' - \xFF\377\u1234\U00010111\U0001011111☺'`,
expected: &StringLiteral{
Val: "\a\b\f\n\r\t\v\\' - \xFF\377\u1234\U00010111\U0001011111☺",
},
}, {
input: "`" + `\a\b\f\n\r\t\v\\\"\' - \xFF\377\u1234\U00010111\U0001011111☺` + "`",
expected: &StringLiteral{
Val: `\a\b\f\n\r\t\v\\\"\' - \xFF\377\u1234\U00010111\U0001011111☺`,
},
}, {
input: "`\\``",
fail: true,
errMsg: "unterminated raw string",
}, {
input: `"\`,
fail: true,
errMsg: "escape sequence not terminated",
}, {
input: `"\c"`,
fail: true,
errMsg: "unknown escape sequence U+0063 'c'",
}, {
input: `"\x."`,
fail: true,
errMsg: "illegal character U+002E '.' in escape sequence",
},
// Subquery.
{
input: `foo{bar="baz"}[10m:6s]`,
expected: &SubqueryExpr{
Expr: &VectorSelector{
Name: "foo",
LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, "bar", "baz"),
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
Range: 10 * time.Minute,
Step: 6 * time.Second,
},
}, {
input: `foo[10m:]`,
expected: &SubqueryExpr{
Expr: &VectorSelector{
Name: "foo",
LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
Range: 10 * time.Minute,
},
}, {
input: `min_over_time(rate(foo{bar="baz"}[2s])[5m:5s])`,
expected: &Call{
Func: mustGetFunction("min_over_time"),
Args: Expressions{
&SubqueryExpr{
Expr: &Call{
Func: mustGetFunction("rate"),
Args: Expressions{
&MatrixSelector{
Name: "foo",
Range: 2 * time.Second,
LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, "bar", "baz"),
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
},
},
Range: 5 * time.Minute,
Step: 5 * time.Second,
},
},
},
}, {
input: `min_over_time(rate(foo{bar="baz"}[2s])[5m:])[4m:3s]`,
expected: &SubqueryExpr{
Expr: &Call{
Func: mustGetFunction("min_over_time"),
Args: Expressions{
&SubqueryExpr{
Expr: &Call{
Func: mustGetFunction("rate"),
Args: Expressions{
&MatrixSelector{
Name: "foo",
Range: 2 * time.Second,
LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, "bar", "baz"),
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
},
},
Range: 5 * time.Minute,
},
},
},
Range: 4 * time.Minute,
Step: 3 * time.Second,
},
}, {
input: `min_over_time(rate(foo{bar="baz"}[2s])[5m:] offset 4m)[4m:3s]`,
expected: &SubqueryExpr{
Expr: &Call{
Func: mustGetFunction("min_over_time"),
Args: Expressions{
&SubqueryExpr{
Expr: &Call{
Func: mustGetFunction("rate"),
Args: Expressions{
&MatrixSelector{
Name: "foo",
Range: 2 * time.Second,
LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, "bar", "baz"),
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
},
},
Range: 5 * time.Minute,
Offset: 4 * time.Minute,
},
},
},
Range: 4 * time.Minute,
Step: 3 * time.Second,
},
}, {
input: "sum without(and, by, avg, count, alert, annotations)(some_metric) [30m:10s]",
expected: &SubqueryExpr{
Expr: &AggregateExpr{
Op: SUM,
Without: true,
Expr: &VectorSelector{
Name: "some_metric",
LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"),
},
},
Grouping: []string{"and", "by", "avg", "count", "alert", "annotations"},
},
Range: 30 * time.Minute,
Step: 10 * time.Second,
},
}, {
input: `some_metric OFFSET 1m [10m:5s]`,
expected: &SubqueryExpr{
Expr: &VectorSelector{
Name: "some_metric",
LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"),
},
Offset: 1 * time.Minute,
},
Range: 10 * time.Minute,
Step: 5 * time.Second,
},
}, {
input: `(foo + bar{nm="val"})[5m:]`,
expected: &SubqueryExpr{
Expr: &ParenExpr{
Expr: &BinaryExpr{
Op: ADD,
VectorMatching: &VectorMatching{
Card: CardOneToOne,
},
LHS: &VectorSelector{
Name: "foo",
LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
RHS: &VectorSelector{
Name: "bar",
LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, "nm", "val"),
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"),
},
},
},
},
Range: 5 * time.Minute,
},
}, {
input: `(foo + bar{nm="val"})[5m:] offset 10m`,
expected: &SubqueryExpr{
Expr: &ParenExpr{
Expr: &BinaryExpr{
Op: ADD,
VectorMatching: &VectorMatching{
Card: CardOneToOne,
},
LHS: &VectorSelector{
Name: "foo",
LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"),
},
},
RHS: &VectorSelector{
Name: "bar",
LabelMatchers: []*labels.Matcher{
mustLabelMatcher(labels.MatchEqual, "nm", "val"),
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"),
},
},
},
},
Range: 5 * time.Minute,
Offset: 10 * time.Minute,
},
}, {
input: "test[5d] OFFSET 10s [10m:5s]",
fail: true,
errMsg: "1:29: parse error: subquery is only allowed on instant vector, got matrix in \"test[5d] offset 10s[10m:5s]\"",
}, {
input: `(foo + bar{nm="val"})[5m:][10m:5s]`,
fail: true,
errMsg: `1:35: parse error: subquery is only allowed on instant vector, got matrix in "(foo + bar{nm=\"val\"})[5m:][10m:5s]" instead`,
},
}
func TestParseExpressions(t *testing.T) {
for _, test := range testExpr {
expr, err := ParseExpr(test.input)
// Unexpected errors are always caused by a bug.
testutil.Assert(t, err != errUnexpected, "unexpected error occurred")
if !test.fail {
testutil.Ok(t, err)
testutil.Equals(t, expr, test.expected, "error on input '%s'", test.input)
} else {
testutil.NotOk(t, err)
testutil.Assert(t, strings.Contains(err.Error(), test.errMsg), "unexpected error on input '%s', expected '%s', got '%s'", test.input, test.errMsg, err.Error())
}
}
}
// NaN has no equality. Thus, we need a separate test for it.
func TestNaNExpression(t *testing.T) {
expr, err := ParseExpr("NaN")
testutil.Ok(t, err)
nl, ok := expr.(*NumberLiteral)
testutil.Assert(t, ok, "expected number literal but got %T", expr)
testutil.Assert(t, math.IsNaN(float64(nl.Val)), "expected 'NaN' in number literal but got %v", nl.Val)
}
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func mustLabelMatcher(mt labels.MatchType, name, val string) *labels.Matcher {
m, err := labels.NewMatcher(mt, name, val)
if err != nil {
panic(err)
}
return m
}
func mustGetFunction(name string) *Function {
f, ok := getFunction(name)
if !ok {
panic(errors.Errorf("function %q does not exist", name))
}
return f
}
var testSeries = []struct {
input string
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expectedMetric labels.Labels
expectedValues []sequenceValue
fail bool
}{
{
input: `{} 1 2 3`,
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expectedMetric: labels.Labels{},
expectedValues: newSeq(1, 2, 3),
}, {
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input: `{a="b"} -1 2 3`,
expectedMetric: labels.FromStrings("a", "b"),
expectedValues: newSeq(-1, 2, 3),
}, {
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input: `my_metric 1 2 3`,
expectedMetric: labels.FromStrings(labels.MetricName, "my_metric"),
expectedValues: newSeq(1, 2, 3),
}, {
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input: `my_metric{} 1 2 3`,
expectedMetric: labels.FromStrings(labels.MetricName, "my_metric"),
expectedValues: newSeq(1, 2, 3),
}, {
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input: `my_metric{a="b"} 1 2 3`,
expectedMetric: labels.FromStrings(labels.MetricName, "my_metric", "a", "b"),
expectedValues: newSeq(1, 2, 3),
}, {
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input: `my_metric{a="b"} 1 2 3-10x4`,
expectedMetric: labels.FromStrings(labels.MetricName, "my_metric", "a", "b"),
expectedValues: newSeq(1, 2, 3, -7, -17, -27, -37),
}, {
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input: `my_metric{a="b"} 1 2 3-0x4`,
expectedMetric: labels.FromStrings(labels.MetricName, "my_metric", "a", "b"),
expectedValues: newSeq(1, 2, 3, 3, 3, 3, 3),
}, {
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input: `my_metric{a="b"} 1 3 _ 5 _x4`,
expectedMetric: labels.FromStrings(labels.MetricName, "my_metric", "a", "b"),
expectedValues: newSeq(1, 3, none, 5, none, none, none, none),
}, {
input: `my_metric{a="b"} 1 3 _ 5 _a4`,
fail: true,
}, {
input: `my_metric{a="b"} 1 -1`,
expectedMetric: labels.FromStrings(labels.MetricName, "my_metric", "a", "b"),
expectedValues: newSeq(1, -1),
}, {
input: `my_metric{a="b"} 1 +1`,
expectedMetric: labels.FromStrings(labels.MetricName, "my_metric", "a", "b"),
expectedValues: newSeq(1, 1),
}, {
input: `my_metric{a="b"} 1 -1 -3-10x4 7 9 +5`,
expectedMetric: labels.FromStrings(labels.MetricName, "my_metric", "a", "b"),
expectedValues: newSeq(1, -1, -3, -13, -23, -33, -43, 7, 9, 5),
}, {
input: `my_metric{a="b"} 1 +1 +4 -6 -2 8`,
expectedMetric: labels.FromStrings(labels.MetricName, "my_metric", "a", "b"),
expectedValues: newSeq(1, 1, 4, -6, -2, 8),
}, {
// Trailing spaces should be correctly handles.
input: `my_metric{a="b"} 1 2 3 `,
expectedMetric: labels.FromStrings(labels.MetricName, "my_metric", "a", "b"),
expectedValues: newSeq(1, 2, 3),
}, {
input: `my_metric{a="b"} -3-3 -3`,
fail: true,
}, {
input: `my_metric{a="b"} -3 -3-3`,
fail: true,
}, {
input: `my_metric{a="b"} -3 _-2`,
fail: true,
}, {
input: `my_metric{a="b"} -3 3+3x4-4`,
fail: true,
},
}
// For these tests only, we use the smallest float64 to signal an omitted value.
const none = math.SmallestNonzeroFloat64
func newSeq(vals ...float64) (res []sequenceValue) {
for _, v := range vals {
if v == none {
res = append(res, sequenceValue{omitted: true})
} else {
res = append(res, sequenceValue{value: v})
}
}
return res
}
func TestParseSeries(t *testing.T) {
for _, test := range testSeries {
metric, vals, err := parseSeriesDesc(test.input)
// Unexpected errors are always caused by a bug.
testutil.Assert(t, err != errUnexpected, "unexpected error occurred")
if !test.fail {
testutil.Ok(t, err)
testutil.Equals(t, test.expectedMetric, metric, "error on input '%s'", test.input)
testutil.Equals(t, test.expectedValues, vals, "error in input '%s'", test.input)
} else {
testutil.NotOk(t, err)
}
}
}
func TestRecoverParserRuntime(t *testing.T) {
p := newParser("foo bar")
var err error
defer func() {
testutil.Equals(t, err, errUnexpected)
}()
defer p.recover(&err)
// Cause a runtime panic.
var a []int
//nolint:govet
a[123] = 1
}
func TestRecoverParserError(t *testing.T) {
p := newParser("foo bar")
var err error
e := errors.New("custom error")
defer func() {
testutil.Equals(t, err.Error(), e.Error())
}()
defer p.recover(&err)
panic(e)
}