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1808 lines
49 KiB
1808 lines
49 KiB
// Copyright 2015 The Prometheus Authors |
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// Licensed under the Apache License, Version 2.0 (the "License"); |
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// you may not use this file except in compliance with the License. |
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// You may obtain a copy of the License at |
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// |
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// http://www.apache.org/licenses/LICENSE-2.0 |
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// |
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// Unless required by applicable law or agreed to in writing, software |
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// distributed under the License is distributed on an "AS IS" BASIS, |
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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// See the License for the specific language governing permissions and |
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// limitations under the License. |
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|
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package promql |
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|
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import ( |
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"fmt" |
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"math" |
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"reflect" |
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"strings" |
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"testing" |
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"time" |
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|
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"github.com/prometheus/common/model" |
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"github.com/prometheus/prometheus/pkg/labels" |
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"github.com/stretchr/testify/require" |
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) |
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|
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var testExpr = []struct { |
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input string // The input to be parsed. |
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expected Expr // The expected expression AST. |
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fail bool // Whether parsing is supposed to fail. |
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errMsg string // If not empty the parsing error has to contain this string. |
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}{ |
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// Scalars and scalar-to-scalar operations. |
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{ |
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input: "1", |
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expected: &NumberLiteral{1}, |
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}, { |
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input: "+Inf", |
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expected: &NumberLiteral{math.Inf(1)}, |
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}, { |
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input: "-Inf", |
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expected: &NumberLiteral{math.Inf(-1)}, |
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}, { |
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input: ".5", |
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expected: &NumberLiteral{0.5}, |
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}, { |
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input: "5.", |
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expected: &NumberLiteral{5}, |
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}, { |
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input: "123.4567", |
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expected: &NumberLiteral{123.4567}, |
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}, { |
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input: "5e-3", |
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expected: &NumberLiteral{0.005}, |
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}, { |
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input: "5e3", |
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expected: &NumberLiteral{5000}, |
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}, { |
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input: "0xc", |
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expected: &NumberLiteral{12}, |
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}, { |
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input: "0755", |
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expected: &NumberLiteral{493}, |
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}, { |
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input: "+5.5e-3", |
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expected: &NumberLiteral{0.0055}, |
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}, { |
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input: "-0755", |
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expected: &NumberLiteral{-493}, |
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}, { |
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input: "1 + 1", |
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expected: &BinaryExpr{itemADD, &NumberLiteral{1}, &NumberLiteral{1}, nil, false}, |
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}, { |
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input: "1 - 1", |
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expected: &BinaryExpr{itemSUB, &NumberLiteral{1}, &NumberLiteral{1}, nil, false}, |
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}, { |
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input: "1 * 1", |
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expected: &BinaryExpr{itemMUL, &NumberLiteral{1}, &NumberLiteral{1}, nil, false}, |
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}, { |
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input: "1 % 1", |
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expected: &BinaryExpr{itemMOD, &NumberLiteral{1}, &NumberLiteral{1}, nil, false}, |
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}, { |
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input: "1 / 1", |
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expected: &BinaryExpr{itemDIV, &NumberLiteral{1}, &NumberLiteral{1}, nil, false}, |
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}, { |
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input: "1 == bool 1", |
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expected: &BinaryExpr{itemEQL, &NumberLiteral{1}, &NumberLiteral{1}, nil, true}, |
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}, { |
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input: "1 != bool 1", |
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expected: &BinaryExpr{itemNEQ, &NumberLiteral{1}, &NumberLiteral{1}, nil, true}, |
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}, { |
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input: "1 > bool 1", |
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expected: &BinaryExpr{itemGTR, &NumberLiteral{1}, &NumberLiteral{1}, nil, true}, |
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}, { |
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input: "1 >= bool 1", |
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expected: &BinaryExpr{itemGTE, &NumberLiteral{1}, &NumberLiteral{1}, nil, true}, |
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}, { |
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input: "1 < bool 1", |
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expected: &BinaryExpr{itemLSS, &NumberLiteral{1}, &NumberLiteral{1}, nil, true}, |
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}, { |
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input: "1 <= bool 1", |
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expected: &BinaryExpr{itemLTE, &NumberLiteral{1}, &NumberLiteral{1}, nil, true}, |
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}, { |
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input: "+1 + -2 * 1", |
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expected: &BinaryExpr{ |
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Op: itemADD, |
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LHS: &NumberLiteral{1}, |
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RHS: &BinaryExpr{ |
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Op: itemMUL, LHS: &NumberLiteral{-2}, RHS: &NumberLiteral{1}, |
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}, |
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}, |
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}, { |
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input: "1 + 2/(3*1)", |
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expected: &BinaryExpr{ |
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Op: itemADD, |
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LHS: &NumberLiteral{1}, |
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RHS: &BinaryExpr{ |
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Op: itemDIV, |
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LHS: &NumberLiteral{2}, |
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RHS: &ParenExpr{&BinaryExpr{ |
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Op: itemMUL, LHS: &NumberLiteral{3}, RHS: &NumberLiteral{1}, |
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}}, |
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}, |
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}, |
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}, { |
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input: "1 < bool 2 - 1 * 2", |
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expected: &BinaryExpr{ |
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Op: itemLSS, |
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ReturnBool: true, |
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LHS: &NumberLiteral{1}, |
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RHS: &BinaryExpr{ |
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Op: itemSUB, |
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LHS: &NumberLiteral{2}, |
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RHS: &BinaryExpr{ |
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Op: itemMUL, LHS: &NumberLiteral{1}, RHS: &NumberLiteral{2}, |
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}, |
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}, |
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}, |
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}, { |
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input: "-some_metric", |
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expected: &UnaryExpr{ |
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Op: itemSUB, |
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Expr: &VectorSelector{ |
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Name: "some_metric", |
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LabelMatchers: []*labels.Matcher{ |
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mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"), |
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}, |
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}, |
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}, |
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}, { |
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input: "+some_metric", |
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expected: &UnaryExpr{ |
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Op: itemADD, |
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Expr: &VectorSelector{ |
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Name: "some_metric", |
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LabelMatchers: []*labels.Matcher{ |
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mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"), |
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}, |
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}, |
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}, |
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}, { |
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input: "", |
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fail: true, |
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errMsg: "no expression found in input", |
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}, { |
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input: "# just a comment\n\n", |
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fail: true, |
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errMsg: "no expression found in input", |
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}, { |
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input: "1+", |
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fail: true, |
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errMsg: "no valid expression found", |
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}, { |
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input: ".", |
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fail: true, |
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errMsg: "unexpected character: '.'", |
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}, { |
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input: "2.5.", |
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fail: true, |
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errMsg: "could not parse remaining input \".\"...", |
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}, { |
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input: "100..4", |
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fail: true, |
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errMsg: "could not parse remaining input \".4\"...", |
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}, { |
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input: "0deadbeef", |
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fail: true, |
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errMsg: "bad number or duration syntax: \"0de\"", |
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}, { |
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input: "1 /", |
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fail: true, |
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errMsg: "no valid expression found", |
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}, { |
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input: "*1", |
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fail: true, |
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errMsg: "no valid expression found", |
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}, { |
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input: "(1))", |
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fail: true, |
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errMsg: "could not parse remaining input \")\"...", |
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}, { |
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input: "((1)", |
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fail: true, |
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errMsg: "unclosed left parenthesis", |
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}, { |
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input: "999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999", |
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fail: true, |
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errMsg: "out of range", |
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}, { |
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input: "(", |
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fail: true, |
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errMsg: "unclosed left parenthesis", |
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}, { |
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input: "1 and 1", |
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fail: true, |
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errMsg: "set operator \"and\" not allowed in binary scalar expression", |
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}, { |
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input: "1 == 1", |
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fail: true, |
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errMsg: "parse error at char 7: comparisons between scalars must use BOOL modifier", |
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}, { |
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input: "1 or 1", |
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fail: true, |
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errMsg: "set operator \"or\" not allowed in binary scalar expression", |
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}, { |
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input: "1 unless 1", |
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fail: true, |
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errMsg: "set operator \"unless\" not allowed in binary scalar expression", |
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}, { |
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input: "1 !~ 1", |
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fail: true, |
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errMsg: "could not parse remaining input \"!~ 1\"...", |
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}, { |
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input: "1 =~ 1", |
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fail: true, |
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errMsg: "could not parse remaining input \"=~ 1\"...", |
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}, { |
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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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}, { |
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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"`, |
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}, { |
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input: `*test`, |
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fail: true, |
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errMsg: "no valid expression found", |
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}, { |
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input: "1 offset 1d", |
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fail: true, |
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errMsg: "offset modifier must be preceded by an instant or range selector", |
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}, { |
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input: "a - on(b) ignoring(c) d", |
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fail: true, |
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errMsg: "parse error at char 11: no valid expression found", |
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}, |
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// Vector binary operations. |
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{ |
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input: "foo * bar", |
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expected: &BinaryExpr{ |
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Op: itemMUL, |
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LHS: &VectorSelector{ |
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Name: "foo", |
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LabelMatchers: []*labels.Matcher{ |
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mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"), |
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}, |
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}, |
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RHS: &VectorSelector{ |
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Name: "bar", |
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LabelMatchers: []*labels.Matcher{ |
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mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"), |
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}, |
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}, |
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VectorMatching: &VectorMatching{Card: CardOneToOne}, |
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}, |
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}, { |
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input: "foo == 1", |
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expected: &BinaryExpr{ |
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Op: itemEQL, |
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LHS: &VectorSelector{ |
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Name: "foo", |
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LabelMatchers: []*labels.Matcher{ |
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mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"), |
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}, |
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}, |
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RHS: &NumberLiteral{1}, |
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}, |
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}, { |
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input: "foo == bool 1", |
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expected: &BinaryExpr{ |
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Op: itemEQL, |
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LHS: &VectorSelector{ |
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Name: "foo", |
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LabelMatchers: []*labels.Matcher{ |
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mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"), |
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}, |
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}, |
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RHS: &NumberLiteral{1}, |
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ReturnBool: true, |
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}, |
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}, { |
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input: "2.5 / bar", |
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expected: &BinaryExpr{ |
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Op: itemDIV, |
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LHS: &NumberLiteral{2.5}, |
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RHS: &VectorSelector{ |
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Name: "bar", |
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LabelMatchers: []*labels.Matcher{ |
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mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"), |
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}, |
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}, |
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}, |
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}, { |
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input: "foo and bar", |
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expected: &BinaryExpr{ |
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Op: itemLAND, |
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LHS: &VectorSelector{ |
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Name: "foo", |
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LabelMatchers: []*labels.Matcher{ |
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mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"), |
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}, |
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}, |
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RHS: &VectorSelector{ |
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Name: "bar", |
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LabelMatchers: []*labels.Matcher{ |
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mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"), |
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}, |
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}, |
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VectorMatching: &VectorMatching{Card: CardManyToMany}, |
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}, |
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}, { |
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input: "foo or bar", |
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expected: &BinaryExpr{ |
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Op: itemLOR, |
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LHS: &VectorSelector{ |
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Name: "foo", |
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LabelMatchers: []*labels.Matcher{ |
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mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"), |
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}, |
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}, |
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RHS: &VectorSelector{ |
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Name: "bar", |
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LabelMatchers: []*labels.Matcher{ |
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mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"), |
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}, |
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}, |
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VectorMatching: &VectorMatching{Card: CardManyToMany}, |
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}, |
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}, { |
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input: "foo unless bar", |
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expected: &BinaryExpr{ |
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Op: itemLUnless, |
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LHS: &VectorSelector{ |
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Name: "foo", |
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LabelMatchers: []*labels.Matcher{ |
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mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"), |
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}, |
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}, |
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RHS: &VectorSelector{ |
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Name: "bar", |
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LabelMatchers: []*labels.Matcher{ |
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mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"), |
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}, |
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}, |
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VectorMatching: &VectorMatching{Card: CardManyToMany}, |
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}, |
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}, { |
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// Test and/or precedence and reassigning of operands. |
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input: "foo + bar or bla and blub", |
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expected: &BinaryExpr{ |
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Op: itemLOR, |
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LHS: &BinaryExpr{ |
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Op: itemADD, |
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LHS: &VectorSelector{ |
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Name: "foo", |
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LabelMatchers: []*labels.Matcher{ |
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mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"), |
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}, |
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}, |
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RHS: &VectorSelector{ |
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Name: "bar", |
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LabelMatchers: []*labels.Matcher{ |
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mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"), |
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}, |
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}, |
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VectorMatching: &VectorMatching{Card: CardOneToOne}, |
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}, |
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RHS: &BinaryExpr{ |
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Op: itemLAND, |
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LHS: &VectorSelector{ |
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Name: "bla", |
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LabelMatchers: []*labels.Matcher{ |
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mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bla"), |
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}, |
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}, |
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RHS: &VectorSelector{ |
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Name: "blub", |
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LabelMatchers: []*labels.Matcher{ |
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mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "blub"), |
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}, |
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}, |
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VectorMatching: &VectorMatching{Card: CardManyToMany}, |
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}, |
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VectorMatching: &VectorMatching{Card: CardManyToMany}, |
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}, |
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}, { |
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// Test and/or/unless precedence. |
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input: "foo and bar unless baz or qux", |
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expected: &BinaryExpr{ |
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Op: itemLOR, |
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LHS: &BinaryExpr{ |
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Op: itemLUnless, |
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LHS: &BinaryExpr{ |
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Op: itemLAND, |
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LHS: &VectorSelector{ |
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Name: "foo", |
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LabelMatchers: []*labels.Matcher{ |
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mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"), |
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}, |
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}, |
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RHS: &VectorSelector{ |
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Name: "bar", |
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LabelMatchers: []*labels.Matcher{ |
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mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"), |
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}, |
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}, |
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VectorMatching: &VectorMatching{Card: CardManyToMany}, |
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}, |
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RHS: &VectorSelector{ |
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Name: "baz", |
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LabelMatchers: []*labels.Matcher{ |
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mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "baz"), |
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}, |
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}, |
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VectorMatching: &VectorMatching{Card: CardManyToMany}, |
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}, |
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RHS: &VectorSelector{ |
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Name: "qux", |
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LabelMatchers: []*labels.Matcher{ |
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mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "qux"), |
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}, |
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}, |
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VectorMatching: &VectorMatching{Card: CardManyToMany}, |
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}, |
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}, { |
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// Test precedence and reassigning of operands. |
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input: "bar + on(foo) bla / on(baz, buz) group_right(test) blub", |
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expected: &BinaryExpr{ |
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Op: itemADD, |
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LHS: &VectorSelector{ |
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Name: "bar", |
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LabelMatchers: []*labels.Matcher{ |
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mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"), |
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}, |
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}, |
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RHS: &BinaryExpr{ |
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Op: itemDIV, |
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LHS: &VectorSelector{ |
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Name: "bla", |
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LabelMatchers: []*labels.Matcher{ |
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mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bla"), |
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}, |
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}, |
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RHS: &VectorSelector{ |
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Name: "blub", |
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LabelMatchers: []*labels.Matcher{ |
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mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "blub"), |
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}, |
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}, |
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VectorMatching: &VectorMatching{ |
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Card: CardOneToMany, |
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MatchingLabels: []string{"baz", "buz"}, |
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On: true, |
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Include: []string{"test"}, |
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}, |
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}, |
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VectorMatching: &VectorMatching{ |
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Card: CardOneToOne, |
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MatchingLabels: []string{"foo"}, |
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On: true, |
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}, |
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}, |
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}, { |
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input: "foo * on(test,blub) bar", |
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expected: &BinaryExpr{ |
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Op: itemMUL, |
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LHS: &VectorSelector{ |
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Name: "foo", |
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LabelMatchers: []*labels.Matcher{ |
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mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"), |
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}, |
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}, |
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RHS: &VectorSelector{ |
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Name: "bar", |
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LabelMatchers: []*labels.Matcher{ |
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mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"), |
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}, |
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}, |
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VectorMatching: &VectorMatching{ |
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Card: CardOneToOne, |
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MatchingLabels: []string{"test", "blub"}, |
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On: true, |
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}, |
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}, |
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}, { |
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input: "foo * on(test,blub) group_left bar", |
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expected: &BinaryExpr{ |
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Op: itemMUL, |
|
LHS: &VectorSelector{ |
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Name: "foo", |
|
LabelMatchers: []*labels.Matcher{ |
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mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"), |
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}, |
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}, |
|
RHS: &VectorSelector{ |
|
Name: "bar", |
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LabelMatchers: []*labels.Matcher{ |
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mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"), |
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}, |
|
}, |
|
VectorMatching: &VectorMatching{ |
|
Card: CardManyToOne, |
|
MatchingLabels: []string{"test", "blub"}, |
|
On: true, |
|
}, |
|
}, |
|
}, { |
|
input: "foo and on(test,blub) bar", |
|
expected: &BinaryExpr{ |
|
Op: itemLAND, |
|
LHS: &VectorSelector{ |
|
Name: "foo", |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"), |
|
}, |
|
}, |
|
RHS: &VectorSelector{ |
|
Name: "bar", |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"), |
|
}, |
|
}, |
|
VectorMatching: &VectorMatching{ |
|
Card: CardManyToMany, |
|
MatchingLabels: []string{"test", "blub"}, |
|
On: true, |
|
}, |
|
}, |
|
}, { |
|
input: "foo and on() bar", |
|
expected: &BinaryExpr{ |
|
Op: itemLAND, |
|
LHS: &VectorSelector{ |
|
Name: "foo", |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"), |
|
}, |
|
}, |
|
RHS: &VectorSelector{ |
|
Name: "bar", |
|
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: itemLAND, |
|
LHS: &VectorSelector{ |
|
Name: "foo", |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"), |
|
}, |
|
}, |
|
RHS: &VectorSelector{ |
|
Name: "bar", |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"), |
|
}, |
|
}, |
|
VectorMatching: &VectorMatching{ |
|
Card: CardManyToMany, |
|
MatchingLabels: []string{"test", "blub"}, |
|
}, |
|
}, |
|
}, { |
|
input: "foo and ignoring() bar", |
|
expected: &BinaryExpr{ |
|
Op: itemLAND, |
|
LHS: &VectorSelector{ |
|
Name: "foo", |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"), |
|
}, |
|
}, |
|
RHS: &VectorSelector{ |
|
Name: "bar", |
|
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: itemLUnless, |
|
LHS: &VectorSelector{ |
|
Name: "foo", |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"), |
|
}, |
|
}, |
|
RHS: &VectorSelector{ |
|
Name: "baz", |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "baz"), |
|
}, |
|
}, |
|
VectorMatching: &VectorMatching{ |
|
Card: CardManyToMany, |
|
MatchingLabels: []string{"bar"}, |
|
On: true, |
|
}, |
|
}, |
|
}, { |
|
input: "foo / on(test,blub) group_left(bar) bar", |
|
expected: &BinaryExpr{ |
|
Op: itemDIV, |
|
LHS: &VectorSelector{ |
|
Name: "foo", |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"), |
|
}, |
|
}, |
|
RHS: &VectorSelector{ |
|
Name: "bar", |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"), |
|
}, |
|
}, |
|
VectorMatching: &VectorMatching{ |
|
Card: CardManyToOne, |
|
MatchingLabels: []string{"test", "blub"}, |
|
On: true, |
|
Include: []string{"bar"}, |
|
}, |
|
}, |
|
}, { |
|
input: "foo / ignoring(test,blub) group_left(blub) bar", |
|
expected: &BinaryExpr{ |
|
Op: itemDIV, |
|
LHS: &VectorSelector{ |
|
Name: "foo", |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"), |
|
}, |
|
}, |
|
RHS: &VectorSelector{ |
|
Name: "bar", |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"), |
|
}, |
|
}, |
|
VectorMatching: &VectorMatching{ |
|
Card: CardManyToOne, |
|
MatchingLabels: []string{"test", "blub"}, |
|
Include: []string{"blub"}, |
|
}, |
|
}, |
|
}, { |
|
input: "foo / ignoring(test,blub) group_left(bar) bar", |
|
expected: &BinaryExpr{ |
|
Op: itemDIV, |
|
LHS: &VectorSelector{ |
|
Name: "foo", |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"), |
|
}, |
|
}, |
|
RHS: &VectorSelector{ |
|
Name: "bar", |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"), |
|
}, |
|
}, |
|
VectorMatching: &VectorMatching{ |
|
Card: CardManyToOne, |
|
MatchingLabels: []string{"test", "blub"}, |
|
Include: []string{"bar"}, |
|
}, |
|
}, |
|
}, { |
|
input: "foo - on(test,blub) group_right(bar,foo) bar", |
|
expected: &BinaryExpr{ |
|
Op: itemSUB, |
|
LHS: &VectorSelector{ |
|
Name: "foo", |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"), |
|
}, |
|
}, |
|
RHS: &VectorSelector{ |
|
Name: "bar", |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"), |
|
}, |
|
}, |
|
VectorMatching: &VectorMatching{ |
|
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: itemSUB, |
|
LHS: &VectorSelector{ |
|
Name: "foo", |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"), |
|
}, |
|
}, |
|
RHS: &VectorSelector{ |
|
Name: "bar", |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "bar"), |
|
}, |
|
}, |
|
VectorMatching: &VectorMatching{ |
|
Card: CardOneToMany, |
|
MatchingLabels: []string{"test", "blub"}, |
|
Include: []string{"bar", "foo"}, |
|
}, |
|
}, |
|
}, { |
|
input: "foo and 1", |
|
fail: true, |
|
errMsg: "set operator \"and\" not allowed in binary scalar expression", |
|
}, { |
|
input: "1 and foo", |
|
fail: true, |
|
errMsg: "set operator \"and\" not allowed in binary scalar expression", |
|
}, { |
|
input: "foo or 1", |
|
fail: true, |
|
errMsg: "set operator \"or\" not allowed in binary scalar expression", |
|
}, { |
|
input: "1 or foo", |
|
fail: true, |
|
errMsg: "set operator \"or\" not allowed in binary scalar expression", |
|
}, { |
|
input: "foo unless 1", |
|
fail: true, |
|
errMsg: "set operator \"unless\" not allowed in binary scalar expression", |
|
}, { |
|
input: "1 unless foo", |
|
fail: true, |
|
errMsg: "set operator \"unless\" not allowed in binary scalar expression", |
|
}, { |
|
input: "1 or on(bar) foo", |
|
fail: true, |
|
errMsg: "vector matching only allowed between instant vectors", |
|
}, { |
|
input: "foo == on(bar) 10", |
|
fail: true, |
|
errMsg: "vector matching only allowed between instant vectors", |
|
}, { |
|
input: "foo and on(bar) group_left(baz) bar", |
|
fail: true, |
|
errMsg: "no grouping allowed for \"and\" operation", |
|
}, { |
|
input: "foo and on(bar) group_right(baz) bar", |
|
fail: true, |
|
errMsg: "no grouping allowed for \"and\" operation", |
|
}, { |
|
input: "foo or on(bar) group_left(baz) bar", |
|
fail: true, |
|
errMsg: "no grouping allowed for \"or\" operation", |
|
}, { |
|
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", |
|
}, |
|
// Test Vector selector. |
|
{ |
|
input: "foo", |
|
expected: &VectorSelector{ |
|
Name: "foo", |
|
Offset: 0, |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"), |
|
}, |
|
}, |
|
}, { |
|
input: "foo offset 5m", |
|
expected: &VectorSelector{ |
|
Name: "foo", |
|
Offset: 5 * time.Minute, |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo"), |
|
}, |
|
}, |
|
}, { |
|
input: `foo:bar{a="bc"}`, |
|
expected: &VectorSelector{ |
|
Name: "foo:bar", |
|
Offset: 0, |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, "a", "bc"), |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "foo:bar"), |
|
}, |
|
}, |
|
}, { |
|
input: `foo{NaN='bc'}`, |
|
expected: &VectorSelector{ |
|
Name: "foo", |
|
Offset: 0, |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, "NaN", "bc"), |
|
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"), |
|
}, |
|
}, |
|
}, { |
|
input: `{`, |
|
fail: true, |
|
errMsg: "unexpected end of input inside braces", |
|
}, { |
|
input: `}`, |
|
fail: true, |
|
errMsg: "unexpected character: '}'", |
|
}, { |
|
input: `some{`, |
|
fail: true, |
|
errMsg: "unexpected end of input inside braces", |
|
}, { |
|
input: `some}`, |
|
fail: true, |
|
errMsg: "could not parse remaining input \"}\"...", |
|
}, { |
|
input: `some_metric{a=b}`, |
|
fail: true, |
|
errMsg: "unexpected identifier \"b\" in label matching, expected string", |
|
}, { |
|
input: `some_metric{a:b="b"}`, |
|
fail: true, |
|
errMsg: "unexpected character inside braces: ':'", |
|
}, { |
|
input: `foo{a*"b"}`, |
|
fail: true, |
|
errMsg: "unexpected character inside braces: '*'", |
|
}, { |
|
input: `foo{a>="b"}`, |
|
fail: true, |
|
// TODO(fabxc): willingly lexing wrong tokens allows for more precise error |
|
// messages from the parser - consider if this is an option. |
|
errMsg: "unexpected character inside braces: '>'", |
|
}, { |
|
input: "some_metric{a=\"\xff\"}", |
|
fail: true, |
|
errMsg: "parse error at char 15: invalid UTF-8 rune", |
|
}, { |
|
input: `foo{gibberish}`, |
|
fail: true, |
|
errMsg: "expected label matching operator but got }", |
|
}, { |
|
input: `foo{1}`, |
|
fail: true, |
|
errMsg: "unexpected character inside braces: '1'", |
|
}, { |
|
input: `{}`, |
|
fail: true, |
|
errMsg: "vector selector must contain label matchers or metric name", |
|
}, { |
|
input: `{x=""}`, |
|
fail: true, |
|
errMsg: "vector selector must contain at least one non-empty matcher", |
|
}, { |
|
input: `{x=~".*"}`, |
|
fail: true, |
|
errMsg: "vector selector must contain at least one non-empty matcher", |
|
}, { |
|
input: `{x!~".+"}`, |
|
fail: true, |
|
errMsg: "vector selector must contain at least one non-empty matcher", |
|
}, { |
|
input: `{x!="a"}`, |
|
fail: true, |
|
errMsg: "vector selector must contain at least one non-empty matcher", |
|
}, { |
|
input: `foo{__name__="bar"}`, |
|
fail: true, |
|
errMsg: "metric name must not be set twice: \"foo\" or \"bar\"", |
|
}, |
|
// Test matrix selector. |
|
{ |
|
input: "test[5s]", |
|
expected: &MatrixSelector{ |
|
Name: "test", |
|
Offset: 0, |
|
Range: 5 * time.Second, |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "test"), |
|
}, |
|
}, |
|
}, { |
|
input: "test[5m]", |
|
expected: &MatrixSelector{ |
|
Name: "test", |
|
Offset: 0, |
|
Range: 5 * time.Minute, |
|
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, |
|
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, |
|
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, |
|
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, |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, "a", "b"), |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "test"), |
|
}, |
|
}, |
|
}, { |
|
input: `foo[5mm]`, |
|
fail: true, |
|
errMsg: "bad duration syntax: \"5mm\"", |
|
}, { |
|
input: `foo[0m]`, |
|
fail: true, |
|
errMsg: "duration must be greater than 0", |
|
}, { |
|
input: `foo[5m30s]`, |
|
fail: true, |
|
errMsg: "bad duration syntax: \"5m3\"", |
|
}, { |
|
input: `foo[5m] OFFSET 1h30m`, |
|
fail: true, |
|
errMsg: "bad number or duration syntax: \"1h3\"", |
|
}, { |
|
input: `foo["5m"]`, |
|
fail: true, |
|
}, { |
|
input: `foo[]`, |
|
fail: true, |
|
errMsg: "missing unit character in duration", |
|
}, { |
|
input: `foo[1]`, |
|
fail: true, |
|
errMsg: "missing unit character in duration", |
|
}, { |
|
input: `some_metric[5m] OFFSET 1`, |
|
fail: true, |
|
errMsg: "unexpected number \"1\" in offset, expected duration", |
|
}, { |
|
input: `some_metric[5m] OFFSET 1mm`, |
|
fail: true, |
|
errMsg: "bad number or duration syntax: \"1mm\"", |
|
}, { |
|
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: "parse error at char 25: unexpected \"]\" in subquery selector, expected \":\"", |
|
}, { |
|
input: `(foo + bar)[5m]`, |
|
fail: true, |
|
errMsg: "parse error at char 15: unexpected \"]\" in subquery selector, expected \":\"", |
|
}, |
|
// Test aggregation. |
|
{ |
|
input: "sum by (foo)(some_metric)", |
|
expected: &AggregateExpr{ |
|
Op: itemSum, |
|
Expr: &VectorSelector{ |
|
Name: "some_metric", |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"), |
|
}, |
|
}, |
|
Grouping: []string{"foo"}, |
|
}, |
|
}, { |
|
input: "avg by (foo)(some_metric)", |
|
expected: &AggregateExpr{ |
|
Op: itemAvg, |
|
Expr: &VectorSelector{ |
|
Name: "some_metric", |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"), |
|
}, |
|
}, |
|
Grouping: []string{"foo"}, |
|
}, |
|
}, { |
|
input: "max by (foo)(some_metric)", |
|
expected: &AggregateExpr{ |
|
Op: itemMax, |
|
Expr: &VectorSelector{ |
|
Name: "some_metric", |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"), |
|
}, |
|
}, |
|
Grouping: []string{"foo"}, |
|
}, |
|
}, { |
|
input: "sum without (foo) (some_metric)", |
|
expected: &AggregateExpr{ |
|
Op: itemSum, |
|
Without: true, |
|
Expr: &VectorSelector{ |
|
Name: "some_metric", |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"), |
|
}, |
|
}, |
|
Grouping: []string{"foo"}, |
|
}, |
|
}, { |
|
input: "sum (some_metric) without (foo)", |
|
expected: &AggregateExpr{ |
|
Op: itemSum, |
|
Without: true, |
|
Expr: &VectorSelector{ |
|
Name: "some_metric", |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"), |
|
}, |
|
}, |
|
Grouping: []string{"foo"}, |
|
}, |
|
}, { |
|
input: "stddev(some_metric)", |
|
expected: &AggregateExpr{ |
|
Op: itemStddev, |
|
Expr: &VectorSelector{ |
|
Name: "some_metric", |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"), |
|
}, |
|
}, |
|
}, |
|
}, { |
|
input: "stdvar by (foo)(some_metric)", |
|
expected: &AggregateExpr{ |
|
Op: itemStdvar, |
|
Expr: &VectorSelector{ |
|
Name: "some_metric", |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"), |
|
}, |
|
}, |
|
Grouping: []string{"foo"}, |
|
}, |
|
}, { |
|
input: "sum by ()(some_metric)", |
|
expected: &AggregateExpr{ |
|
Op: itemSum, |
|
Expr: &VectorSelector{ |
|
Name: "some_metric", |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"), |
|
}, |
|
}, |
|
Grouping: []string{}, |
|
}, |
|
}, { |
|
input: "topk(5, some_metric)", |
|
expected: &AggregateExpr{ |
|
Op: itemTopK, |
|
Expr: &VectorSelector{ |
|
Name: "some_metric", |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"), |
|
}, |
|
}, |
|
Param: &NumberLiteral{5}, |
|
}, |
|
}, { |
|
input: "count_values(\"value\", some_metric)", |
|
expected: &AggregateExpr{ |
|
Op: itemCountValues, |
|
Expr: &VectorSelector{ |
|
Name: "some_metric", |
|
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: itemSum, |
|
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"}, |
|
}, |
|
}, { |
|
input: "sum without(==)(some_metric)", |
|
fail: true, |
|
errMsg: "unexpected <op:==> in grouping opts, expected label", |
|
}, { |
|
input: `sum some_metric by (test)`, |
|
fail: true, |
|
errMsg: "unexpected identifier \"some_metric\" in aggregation, expected \"(\"", |
|
}, { |
|
input: `sum (some_metric) by test`, |
|
fail: true, |
|
errMsg: "unexpected identifier \"test\" in grouping opts, expected \"(\"", |
|
}, { |
|
input: `sum (some_metric) by test`, |
|
fail: true, |
|
errMsg: "unexpected identifier \"test\" in grouping opts, expected \"(\"", |
|
}, { |
|
input: `sum () by (test)`, |
|
fail: true, |
|
errMsg: "no valid expression found", |
|
}, { |
|
input: "MIN keep_common (some_metric)", |
|
fail: true, |
|
errMsg: "parse error at char 5: unexpected identifier \"keep_common\" in aggregation, expected \"(\"", |
|
}, { |
|
input: "MIN (some_metric) keep_common", |
|
fail: true, |
|
errMsg: "could not parse remaining input \"keep_common\"...", |
|
}, { |
|
input: `sum (some_metric) without (test) by (test)`, |
|
fail: true, |
|
errMsg: "could not parse remaining input \"by (test)\"...", |
|
}, { |
|
input: `sum without (test) (some_metric) by (test)`, |
|
fail: true, |
|
errMsg: "could not parse remaining input \"by (test)\"...", |
|
}, { |
|
input: `topk(some_metric)`, |
|
fail: true, |
|
errMsg: "parse error at char 17: unexpected \")\" in aggregation, expected \",\"", |
|
}, { |
|
input: `topk(some_metric, other_metric)`, |
|
fail: true, |
|
errMsg: "parse error at char 32: expected type scalar in aggregation parameter, got instant vector", |
|
}, { |
|
input: `count_values(5, other_metric)`, |
|
fail: true, |
|
errMsg: "parse error at char 30: expected type string in aggregation parameter, got scalar", |
|
}, |
|
// Test function calls. |
|
{ |
|
input: "time()", |
|
expected: &Call{ |
|
Func: mustGetFunction("time"), |
|
}, |
|
}, { |
|
input: `floor(some_metric{foo!="bar"})`, |
|
expected: &Call{ |
|
Func: mustGetFunction("floor"), |
|
Args: Expressions{ |
|
&VectorSelector{ |
|
Name: "some_metric", |
|
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", |
|
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", |
|
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", |
|
LabelMatchers: []*labels.Matcher{ |
|
mustLabelMatcher(labels.MatchEqual, string(model.MetricNameLabel), "some_metric"), |
|
}, |
|
}, |
|
&NumberLiteral{5}, |
|
}, |
|
}, |
|
}, { |
|
input: "floor()", |
|
fail: true, |
|
errMsg: "expected 1 argument(s) in call to \"floor\", got 0", |
|
}, { |
|
input: "floor(some_metric, other_metric)", |
|
fail: true, |
|
errMsg: "expected 1 argument(s) in call to \"floor\", got 2", |
|
}, { |
|
input: "floor(1)", |
|
fail: true, |
|
errMsg: "expected type instant vector in call to function \"floor\", got scalar", |
|
}, { |
|
input: "non_existent_function_far_bar()", |
|
fail: true, |
|
errMsg: "unknown function with name \"non_existent_function_far_bar\"", |
|
}, { |
|
input: "rate(some_metric)", |
|
fail: true, |
|
errMsg: "expected type range vector in call to function \"rate\", got instant vector", |
|
}, { |
|
input: "label_replace(a, `b`, `c\xff`, `d`, `.*`)", |
|
fail: true, |
|
errMsg: "parse error at char 23: invalid UTF-8 rune", |
|
}, |
|
// Fuzzing regression tests. |
|
{ |
|
input: "-=", |
|
fail: true, |
|
errMsg: `no valid expression found`, |
|
}, { |
|
input: "++-++-+-+-<", |
|
fail: true, |
|
errMsg: `no valid expression found`, |
|
}, { |
|
input: "e-+=/(0)", |
|
fail: true, |
|
errMsg: `no valid expression found`, |
|
}, |
|
// 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: "could not parse remaining input", |
|
}, { |
|
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: itemSum, |
|
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: itemADD, |
|
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: itemADD, |
|
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: "parse error at char 29: 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: "parse error at char 27: could not parse remaining input \"[10m:5s]\"...", |
|
}, |
|
} |
|
|
|
func TestParseExpressions(t *testing.T) { |
|
for _, test := range testExpr { |
|
expr, err := ParseExpr(test.input) |
|
|
|
// Unexpected errors are always caused by a bug. |
|
if err == errUnexpected { |
|
t.Fatalf("unexpected error occurred") |
|
} |
|
|
|
if !test.fail && err != nil { |
|
t.Errorf("error in input '%s'", test.input) |
|
t.Fatalf("could not parse: %s", err) |
|
} |
|
|
|
if test.fail && err != nil { |
|
if !strings.Contains(err.Error(), test.errMsg) { |
|
t.Errorf("unexpected error on input '%s'", test.input) |
|
t.Fatalf("expected error to contain %q but got %q", test.errMsg, err) |
|
} |
|
continue |
|
} |
|
|
|
if !reflect.DeepEqual(expr, test.expected) { |
|
t.Errorf("error on input '%s'", test.input) |
|
t.Fatalf("no match\n\nexpected:\n%s\ngot: \n%s\n", Tree(test.expected), Tree(expr)) |
|
} |
|
} |
|
} |
|
|
|
// NaN has no equality. Thus, we need a separate test for it. |
|
func TestNaNExpression(t *testing.T) { |
|
expr, err := ParseExpr("NaN") |
|
if err != nil { |
|
t.Errorf("error on input 'NaN'") |
|
t.Fatalf("could not parse: %s", err) |
|
} |
|
|
|
nl, ok := expr.(*NumberLiteral) |
|
if !ok { |
|
t.Errorf("error on input 'NaN'") |
|
t.Fatalf("expected number literal but got %T", expr) |
|
} |
|
|
|
if !math.IsNaN(float64(nl.Val)) { |
|
t.Errorf("error on input 'NaN'") |
|
t.Fatalf("expected 'NaN' in number literal but got %v", nl.Val) |
|
} |
|
} |
|
|
|
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(fmt.Errorf("function %q does not exist", name)) |
|
} |
|
return f |
|
} |
|
|
|
var testSeries = []struct { |
|
input string |
|
expectedMetric labels.Labels |
|
expectedValues []sequenceValue |
|
fail bool |
|
}{ |
|
{ |
|
input: `{} 1 2 3`, |
|
expectedMetric: labels.Labels{}, |
|
expectedValues: newSeq(1, 2, 3), |
|
}, { |
|
input: `{a="b"} -1 2 3`, |
|
expectedMetric: labels.FromStrings("a", "b"), |
|
expectedValues: newSeq(-1, 2, 3), |
|
}, { |
|
input: `my_metric 1 2 3`, |
|
expectedMetric: labels.FromStrings(labels.MetricName, "my_metric"), |
|
expectedValues: newSeq(1, 2, 3), |
|
}, { |
|
input: `my_metric{} 1 2 3`, |
|
expectedMetric: labels.FromStrings(labels.MetricName, "my_metric"), |
|
expectedValues: newSeq(1, 2, 3), |
|
}, { |
|
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"} 1 2 3-10x4`, |
|
expectedMetric: labels.FromStrings(labels.MetricName, "my_metric", "a", "b"), |
|
expectedValues: newSeq(1, 2, 3, -7, -17, -27, -37), |
|
}, { |
|
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), |
|
}, { |
|
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. |
|
if err == errUnexpected { |
|
t.Fatalf("unexpected error occurred") |
|
} |
|
|
|
if test.fail { |
|
if err != nil { |
|
continue |
|
} |
|
t.Errorf("error in input: \n\n%s\n", test.input) |
|
t.Fatalf("failure expected, but passed") |
|
} else { |
|
if err != nil { |
|
t.Errorf("error in input: \n\n%s\n", test.input) |
|
t.Fatalf("could not parse: %s", err) |
|
} |
|
} |
|
|
|
require.Equal(t, test.expectedMetric, metric) |
|
require.Equal(t, test.expectedValues, vals) |
|
|
|
if !reflect.DeepEqual(vals, test.expectedValues) || !reflect.DeepEqual(metric, test.expectedMetric) { |
|
t.Errorf("error in input: \n\n%s\n", test.input) |
|
t.Fatalf("no match\n\nexpected:\n%s %s\ngot: \n%s %s\n", test.expectedMetric, test.expectedValues, metric, vals) |
|
} |
|
} |
|
} |
|
|
|
func TestRecoverParserRuntime(t *testing.T) { |
|
p := newParser("foo bar") |
|
var err error |
|
|
|
defer func() { |
|
if err != errUnexpected { |
|
t.Fatalf("wrong error message: %q, expected %q", err, errUnexpected) |
|
} |
|
|
|
if _, ok := <-p.lex.items; ok { |
|
t.Fatalf("lex.items was not closed") |
|
} |
|
}() |
|
defer p.recover(&err) |
|
// Cause a runtime panic. |
|
var a []int |
|
a[123] = 1 |
|
} |
|
|
|
func TestRecoverParserError(t *testing.T) { |
|
p := newParser("foo bar") |
|
var err error |
|
|
|
e := fmt.Errorf("custom error") |
|
|
|
defer func() { |
|
if err.Error() != e.Error() { |
|
t.Fatalf("wrong error message: %q, expected %q", err, e) |
|
} |
|
}() |
|
defer p.recover(&err) |
|
|
|
panic(e) |
|
}
|
|
|