mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-12-22 16:36:27 +01:00
0206a01d03
This code adds Exemplars to VMagent and the promscrape parser adhering
to OpenMetrics Specifications. This will allow forwarding of exemplars
to Prometheus and other third party apps that support OpenMetrics specs.
---------
Signed-off-by: Ted Possible <ted_possible@cable.comcast.com>
(cherry picked from commit 5a3abfa041)
714 lines
16 KiB
Go
714 lines
16 KiB
Go
package prometheus
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import (
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"math"
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"reflect"
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"testing"
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)
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func TestGetRowsDiff(t *testing.T) {
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f := func(s1, s2, resultExpected string) {
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t.Helper()
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result := GetRowsDiff(s1, s2)
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if result != resultExpected {
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t.Fatalf("unexpected result for GetRowsDiff(%q, %q); got %q; want %q", s1, s2, result, resultExpected)
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}
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}
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f("", "", "")
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f("", "foo 1", "")
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f(" ", "foo 1", "")
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f("foo 123", "", "foo 0\n")
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f("foo 123", "bar 3", "foo 0\n")
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f("foo 123", "bar 3\nfoo 344", "")
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f("foo{x=\"y\", z=\"a a a\"} 123", "bar 3\nfoo{x=\"y\", z=\"b b b\"} 344", "foo{x=\"y\",z=\"a a a\"} 0\n")
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f("foo{bar=\"baz\"} 123\nx 3.4 5\ny 5 6", "x 34 342", "foo{bar=\"baz\"} 0\ny 0\n")
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}
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func TestAreIdenticalSeriesFast(t *testing.T) {
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f := func(s1, s2 string, resultExpected bool) {
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t.Helper()
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result := AreIdenticalSeriesFast(s1, s2)
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if result != resultExpected {
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t.Fatalf("unexpected result for AreIdenticalSeries(%q, %q); got %v; want %v", s1, s2, result, resultExpected)
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}
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}
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f("", "", true)
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f("", "a 1", false) // different number of metrics
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f(" ", " a 1", false) // different number of metrics
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f("a 1", "", false) // different number of metrics
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f(" a 1", " ", false) // different number of metrics
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f("foo", "foo", true) // consider series identical if they miss value
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f("foo 1", "foo 1", true)
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f("foo 1", "foo 2", true)
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f("foo 1 ", "foo 2 ", true)
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f("foo 1 ", "foo 2 ", false) // different number of spaces
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f("foo 1 ", "foo 2 ", false) // different number of spaces
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f("foo nan", "foo -inf", true)
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f("foo 1 # coment x", "foo 2 #comment y", true)
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f(" foo 1", " foo 1", true)
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f(" foo 1", " foo 1", false) // different number of spaces in front of metric
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f(" foo 1", " foo 1", false) // different number of spaces in front of metric
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f("foo 1", "bar 1", false) // different metric name
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f("foo 1", "fooo 1", false) // different metric name
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f("foo 123", "foo 32.32", true)
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f(`foo{bar="x"} -3.3e-6`, `foo{bar="x"} 23343`, true)
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f(`foo{} 1`, `foo{} 234`, true)
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f(`foo {x="y x" } 234`, `foo {x="y x" } 43.342`, true)
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f(`foo {x="y x"} 234`, `foo{x="y x"} 43.342`, false) // different spaces
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f("foo 2\nbar 3", "foo 34.43\nbar -34.3", true)
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f("foo 2\nbar 3", "foo 34.43\nbarz -34.3", false) // different metric names
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f("\nfoo 13\n", "\nfoo 3.4\n", true)
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f("\nfoo 13", "\nfoo 3.4\n", false) // different number of blank lines
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f("\nfoo 13\n", "\nfoo 3.4", false) // different number of blank lines
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f("\n\nfoo 1", "\n\nfoo 34.43", true)
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f("\n\nfoo 3434\n", "\n\nfoo 43\n", true)
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f("\nfoo 1", "\n\nfoo 34.43", false) // different number of blank lines
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f("#foo{bar}", "#baz", true)
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f("", "#baz", false) // different number of comments
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f("#foo{bar}", "", false) // different number of comments
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f("#foo{bar}", "bar 3", false) // different number of comments
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f("foo{bar} 2", "#bar 3", false) // different number of comments
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f("#foo\n", "#bar", false) // different number of blank lines
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f("#foo{bar}\n#baz", "#baz\n#xdsfds dsf", true)
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f("# foo\nbar 234\nbaz{x=\"y\", z=\"\"} 3", "# foo\nbar 3.3\nbaz{x=\"y\", z=\"\"} 4323", true)
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f("# foo\nbar 234\nbaz{x=\"z\", z=\"\"} 3", "# foo\nbar 3.3\nbaz{x=\"y\", z=\"\"} 4323", false) // different label value
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f("foo {bar=\"xfdsdsffdsa\"} 1", "foo {x=\"y\"} 2", false) // different labels
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f("foo {x=\"z\"} 1", "foo {x=\"y\"} 2", false) // different label value
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// Lines with timestamps
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f("foo 1 2", "foo 234 4334", true)
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f("foo 2", "foo 3 4", false) // missing timestamp
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f("foo 2 1", "foo 3", false) // missing timestamp
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f("foo{bar=\"b az\"} 2 5", "foo{bar=\"b az\"} +6.3 7.43", true)
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f("foo{bar=\"b az\"} 2 5 # comment ss ", "foo{bar=\"b az\"} +6.3 7.43 # comment as ", true)
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f("foo{bar=\"b az\"} 2 5 #comment", "foo{bar=\"b az\"} +6.3 7.43 #comment {foo=\"bar\"} 21.44", true)
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f("foo{bar=\"b az\"} +Inf 5", "foo{bar=\"b az\"} NaN 7.43", true)
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f("foo{bar=\"b az\"} +Inf 5", "foo{bar=\"b az\"} nan 7.43", true)
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f("foo{bar=\"b az\"} +Inf 5", "foo{bar=\"b az\"} nansf 7.43", false) // invalid value
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// False positive - whitespace after the numeric char in the label.
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f(`foo{bar=" 12.3 "} 1`, `foo{bar=" 13 "} 23`, true)
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f(`foo{bar=" 12.3 "} 1 3443`, `foo{bar=" 13 "} 23 4345`, true)
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f(`foo{bar=" 12.3 "} 1 3443 # {} 34`, `foo{bar=" 13 "} 23 4345 # {foo=" bar "} 34`, true)
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// Metrics and labels with '#' chars
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f(`foo{bar="#1"} 1`, `foo{bar="#1"} 1`, true)
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f(`foo{bar="a#1"} 1`, `foo{bar="b#1"} 1.4`, false)
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f(`foo{bar=" #1"} 1`, `foo{bar=" #1"} 3`, true)
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f(`foo{bar=" #1 "} 1`, `foo{bar=" #1 "} -2.34 343.34 # {foo="#bar"} `, true)
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f(`foo{bar=" #1"} 1`, `foo{bar="#1"} 1`, false)
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f(`foo{b#ar=" #1"} 1`, `foo{b#ar=" #1"} 1.23`, true)
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f(`foo{z#ar=" #1"} 1`, `foo{b#ar=" #1"} 1.23`, false)
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f(`fo#o{b#ar="#1"} 1`, `fo#o{b#ar="#1"} 1.23`, true)
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f(`fo#o{b#ar="#1"} 1`, `fa#o{b#ar="#1"} 1.23`, false)
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// False positive - the value after '#' char can be arbitrary
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f(`fo#o{b#ar="#1"} 1`, `fo#osdf 1.23`, true)
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}
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func TestPrevBackslashesCount(t *testing.T) {
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f := func(s string, nExpected int) {
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t.Helper()
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n := prevBackslashesCount(s)
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if n != nExpected {
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t.Fatalf("unexpected value returned from prevBackslashesCount(%q); got %d; want %d", s, n, nExpected)
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}
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}
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f(``, 0)
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f(`foo`, 0)
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f(`\`, 1)
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f(`\\`, 2)
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f(`\\\`, 3)
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f(`\\\a`, 0)
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f(`foo\bar`, 0)
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f(`foo\\`, 2)
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f(`\\foo\`, 1)
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f(`\\foo\\\\`, 4)
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}
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func TestFindClosingQuote(t *testing.T) {
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f := func(s string, nExpected int) {
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t.Helper()
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n := findClosingQuote(s)
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if n != nExpected {
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t.Fatalf("unexpected value returned from findClosingQuote(%q); got %d; want %d", s, n, nExpected)
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}
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}
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f(``, -1)
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f(`x`, -1)
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f(`"`, -1)
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f(`""`, 1)
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f(`foobar"`, -1)
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f(`"foo"`, 4)
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f(`"\""`, 3)
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f(`"\\"`, 3)
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f(`"\"`, -1)
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f(`"foo\"bar\"baz"`, 14)
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}
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func TestUnescapeValue(t *testing.T) {
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f := func(s, resultExpected string) {
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t.Helper()
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result := unescapeValue(s)
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if result != resultExpected {
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t.Fatalf("unexpected result; got %q; want %q", result, resultExpected)
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}
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}
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f(``, "")
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f(`f`, "f")
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f(`foobar`, "foobar")
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f(`\"\n\t`, "\"\n\\t")
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// Edge cases
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f(`foo\bar`, "foo\\bar")
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f(`foo\`, "foo\\")
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}
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func TestAppendEscapedValue(t *testing.T) {
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f := func(s, resultExpected string) {
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t.Helper()
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result := appendEscapedValue(nil, s)
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if string(result) != resultExpected {
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t.Fatalf("unexpected result; got %q; want %q", result, resultExpected)
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}
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}
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f(``, ``)
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f(`f`, `f`)
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f(`foobar`, `foobar`)
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f("\"\n\t\\xyz", "\\\"\\n\t\\\\xyz")
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}
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func TestRowsUnmarshalFailure(t *testing.T) {
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f := func(s string) {
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t.Helper()
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var rows Rows
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rows.Unmarshal(s)
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if len(rows.Rows) != 0 {
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t.Fatalf("unexpected number of rows parsed; got %d; want 0;\nrows:%#v", len(rows.Rows), rows.Rows)
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}
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// Try again
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rows.Unmarshal(s)
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if len(rows.Rows) != 0 {
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t.Fatalf("unexpected number of rows parsed; got %d; want 0;\nrows:%#v", len(rows.Rows), rows.Rows)
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}
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}
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// Empty lines and comments
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f("")
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f(" ")
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f("\t")
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f("\t \r")
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f("\t\t \n\n # foobar")
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f("#foobar")
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f("#foobar\n")
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// invalid tags
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f("a{")
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f("a { ")
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f("a {foo")
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f("a {foo} 3")
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f("a {foo =")
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f(`a {foo ="bar`)
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f(`a {foo ="b\ar`)
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f(`a {foo = "bar"`)
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f(`a {foo ="bar",`)
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f(`a {foo ="bar" , `)
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f(`a {foo ="bar" , baz } 2`)
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// invalid tags - see https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4284
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f(`a{"__name__":"upsd_time_left_ns","host":"myhost", status_OB="true"} 12`)
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f(`a{host:"myhost"} 12`)
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f(`a{host:"myhost",foo="bar"} 12`)
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// empty metric name
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f(`{foo="bar"}`)
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// Invalid quotes for label value
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f(`{foo='bar'} 23`)
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f("{foo=`bar`} 23")
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// Missing value
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f("aaa")
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f(" aaa")
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f(" aaa ")
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f(" aaa \n")
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f(` aa{foo="bar"} ` + "\n")
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// Invalid value
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f("foo bar")
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f("foo bar 124")
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// Invalid timestamp
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f("foo 123 bar")
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}
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func TestRowsUnmarshalSuccess(t *testing.T) {
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f := func(s string, rowsExpected *Rows) {
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t.Helper()
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var rows Rows
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rows.Unmarshal(s)
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if !reflect.DeepEqual(rows.Rows, rowsExpected.Rows) {
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t.Fatalf("unexpected rows;\ngot\n%+v;\nwant\n%+v", rows.Rows, rowsExpected.Rows)
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}
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// Try unmarshaling again
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rows.Unmarshal(s)
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if !reflect.DeepEqual(rows.Rows, rowsExpected.Rows) {
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t.Fatalf("unexpected rows;\ngot\n%+v;\nwant\n%+v", rows.Rows, rowsExpected.Rows)
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}
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rows.Reset()
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if len(rows.Rows) != 0 {
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t.Fatalf("non-empty rows after reset: %+v", rows.Rows)
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}
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}
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// Empty line or comment
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f("", &Rows{})
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f("\r", &Rows{})
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f("\n\n", &Rows{})
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f("\n\r\n", &Rows{})
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f("\t \t\n\r\n#foobar\n # baz", &Rows{})
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// Single line
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f("foobar 78.9", &Rows{
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Rows: []Row{{
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Metric: "foobar",
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Value: 78.9,
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}},
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})
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f("foobar 123.456 789\n", &Rows{
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Rows: []Row{{
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Metric: "foobar",
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Value: 123.456,
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Timestamp: 789000,
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}},
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})
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f("foobar{} 123.456 789.4354\n", &Rows{
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Rows: []Row{{
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Metric: "foobar",
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Value: 123.456,
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Timestamp: 789435,
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}},
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})
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f(`# _ _
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# ___ __ _ ___ ___ __ _ _ __ __| |_ __ __ _ _____ ___ __ ___ _ __| |_ ___ _ __
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`+"# / __/ _` / __/ __|/ _` | '_ \\ / _` | '__/ _` |_____ / _ \\ \\/ / '_ \\ / _ \\| '__| __/ _ \\ '__|\n"+`
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# | (_| (_| \__ \__ \ (_| | | | | (_| | | | (_| |_____| __/> <| |_) | (_) | | | || __/ |
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# \___\__,_|___/___/\__,_|_| |_|\__,_|_| \__,_| \___/_/\_\ .__/ \___/|_| \__\___|_|
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# |_|
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#
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# TYPE cassandra_token_ownership_ratio gauge
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cassandra_token_ownership_ratio 78.9`, &Rows{
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Rows: []Row{{
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Metric: "cassandra_token_ownership_ratio",
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Value: 78.9,
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}},
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})
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// `#` char in label value
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f(`foo{bar="#1 az"} 24`, &Rows{
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Rows: []Row{{
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Metric: "foo",
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Tags: []Tag{{
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Key: "bar",
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Value: "#1 az",
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}},
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Value: 24,
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}},
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})
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// `#` char in label name and label value
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f(`foo{bar#2="#1 az"} 24 456`, &Rows{
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Rows: []Row{{
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Metric: "foo",
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Tags: []Tag{{
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Key: "bar#2",
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Value: "#1 az",
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}},
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Value: 24,
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Timestamp: 456000,
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}},
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})
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// `#` char in metric name, label name and label value
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f(`foo#qw{bar#2="#1 az"} 24 456 # foobar {baz="x"}`, &Rows{
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Rows: []Row{{
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Metric: "foo#qw",
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Tags: []Tag{{
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Key: "bar#2",
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Value: "#1 az",
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}},
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Value: 24,
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Timestamp: 456000,
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}},
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})
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// Incorrectly escaped backlash. This is real-world case, which must be supported.
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f(`mssql_sql_server_active_transactions_sec{loginname="domain\somelogin",env="develop"} 56`, &Rows{
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Rows: []Row{{
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Metric: "mssql_sql_server_active_transactions_sec",
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Tags: []Tag{
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{
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Key: "loginname",
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Value: "domain\\somelogin",
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},
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{
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Key: "env",
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Value: "develop",
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},
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},
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Value: 56,
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}},
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})
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// Support for Exemplars Open Metric Specification
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// see: https://github.com/OpenObservability/OpenMetrics/blob/main/specification/OpenMetrics.md#exemplars-1
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f(`foo_bucket{le="25"} 17 # {trace_id="oHg5SJYRHA0", log_id="test_id"} 9.8 1520879607.789`, &Rows{
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Rows: []Row{
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{
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Metric: "foo_bucket",
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Tags: []Tag{
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{
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Key: "le",
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Value: "25",
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},
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},
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Value: 17,
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Exemplar: Exemplar{
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Value: 9.8,
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Tags: []Tag{
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{
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Key: "trace_id",
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Value: "oHg5SJYRHA0",
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},
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{
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Key: "log_id",
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Value: "test_id",
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},
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},
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Timestamp: 1520879607789,
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},
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},
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}})
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f(`foo_bucket{le="0.01"} 0
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foo_bucket{le="0.1"} 8 # {} 0.054
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foo_bucket{le="1"} 11 # {trace_id="KOO5S4vxi0o"} 0.67
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foo_bucket{le="10"} 17 # {trace_id="oHg5SJYRHA0"} 9.8 1520879607.789
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foo_bucket{le="25"} 17 # {trace_id="oHg5SJYRHA0", log_id="test_id"} 9.8 1520879607.789
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foo_bucket{nospace="exemplar"} 17 #{trace_id="oHg5SJYRHA0"} 9.8 1520879607.789
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foo_bucket{le="+Inf"} 17
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foo_count 17
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foo_sum 324789.3
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foo_created 1520430000.123`, &Rows{
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Rows: []Row{
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{
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Metric: "foo_bucket",
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Tags: []Tag{
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{
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Key: "le",
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Value: "0.01",
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},
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},
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},
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{
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Metric: "foo_bucket",
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Tags: []Tag{
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{
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Key: "le",
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Value: "0.1",
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},
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},
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Value: 8,
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Exemplar: Exemplar{
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Value: 0.054,
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},
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},
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{
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Metric: "foo_bucket",
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Tags: []Tag{
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{
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Key: "le",
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Value: "1",
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},
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},
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Value: 11,
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Exemplar: Exemplar{
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Value: 0.67,
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Tags: []Tag{
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{
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Key: "trace_id",
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Value: "KOO5S4vxi0o",
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},
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},
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},
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},
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{
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Metric: "foo_bucket",
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Tags: []Tag{
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{
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Key: "le",
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Value: "10",
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},
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},
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Value: 17,
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Exemplar: Exemplar{
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Value: 9.8,
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Tags: []Tag{
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{
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Key: "trace_id",
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Value: "oHg5SJYRHA0",
|
|
},
|
|
},
|
|
Timestamp: 1520879607789,
|
|
},
|
|
},
|
|
{
|
|
Metric: "foo_bucket",
|
|
Tags: []Tag{
|
|
{
|
|
Key: "le",
|
|
Value: "25",
|
|
},
|
|
},
|
|
Value: 17,
|
|
Exemplar: Exemplar{
|
|
Value: 9.8,
|
|
Tags: []Tag{
|
|
{
|
|
Key: "trace_id",
|
|
Value: "oHg5SJYRHA0",
|
|
},
|
|
{
|
|
Key: "log_id",
|
|
Value: "test_id",
|
|
},
|
|
},
|
|
Timestamp: 1520879607789,
|
|
},
|
|
},
|
|
{
|
|
Metric: "foo_bucket",
|
|
Tags: []Tag{
|
|
{
|
|
Key: "nospace",
|
|
Value: "exemplar",
|
|
},
|
|
},
|
|
Value: 17,
|
|
Exemplar: Exemplar{
|
|
Value: 9.8,
|
|
Tags: []Tag{
|
|
{
|
|
Key: "trace_id",
|
|
Value: "oHg5SJYRHA0",
|
|
},
|
|
},
|
|
Timestamp: 1520879607789,
|
|
},
|
|
},
|
|
{
|
|
Metric: "foo_bucket",
|
|
Tags: []Tag{
|
|
{
|
|
Key: "le",
|
|
Value: "+Inf",
|
|
},
|
|
},
|
|
Value: 17,
|
|
},
|
|
{
|
|
Metric: "foo_count",
|
|
Value: 17,
|
|
},
|
|
{
|
|
Metric: "foo_sum",
|
|
Value: 324789.3,
|
|
},
|
|
{
|
|
Metric: "foo_created",
|
|
Value: 1520430000.123,
|
|
},
|
|
},
|
|
})
|
|
|
|
// "Infinity" word - this has been added in OpenMetrics.
|
|
// See https://github.com/OpenObservability/OpenMetrics/blob/master/OpenMetrics.md
|
|
// Checks for https://github.com/VictoriaMetrics/VictoriaMetrics/issues/924
|
|
inf := math.Inf(1)
|
|
f(`
|
|
foo Infinity
|
|
bar +Infinity
|
|
baz -infinity
|
|
aaa +inf
|
|
bbb -INF
|
|
ccc INF
|
|
`, &Rows{
|
|
Rows: []Row{
|
|
{
|
|
Metric: "foo",
|
|
Value: inf,
|
|
},
|
|
{
|
|
Metric: "bar",
|
|
Value: inf,
|
|
},
|
|
{
|
|
Metric: "baz",
|
|
Value: -inf,
|
|
},
|
|
{
|
|
Metric: "aaa",
|
|
Value: inf,
|
|
},
|
|
{
|
|
Metric: "bbb",
|
|
Value: -inf,
|
|
},
|
|
{
|
|
Metric: "ccc",
|
|
Value: inf,
|
|
},
|
|
},
|
|
})
|
|
|
|
// Timestamp bigger than 1<<31.
|
|
// It should be parsed in milliseconds.
|
|
f("aaa 1123 429496729600", &Rows{
|
|
Rows: []Row{{
|
|
Metric: "aaa",
|
|
Value: 1123,
|
|
Timestamp: 429496729600,
|
|
}},
|
|
})
|
|
|
|
// Floating-point timestamps in OpenMetric format.
|
|
f("aaa 1123 42949.567", &Rows{
|
|
Rows: []Row{{
|
|
Metric: "aaa",
|
|
Value: 1123,
|
|
Timestamp: 42949567,
|
|
}},
|
|
})
|
|
|
|
// Tags
|
|
f(`foo{bar="baz"} 1 2`, &Rows{
|
|
Rows: []Row{{
|
|
Metric: "foo",
|
|
Tags: []Tag{{
|
|
Key: "bar",
|
|
Value: "baz",
|
|
}},
|
|
Value: 1,
|
|
Timestamp: 2000,
|
|
}},
|
|
})
|
|
f(`foo{bar="b\"a\\z"} -1.2`, &Rows{
|
|
Rows: []Row{{
|
|
Metric: "foo",
|
|
Tags: []Tag{{
|
|
Key: "bar",
|
|
Value: "b\"a\\z",
|
|
}},
|
|
Value: -1.2,
|
|
}},
|
|
})
|
|
// Empty tags
|
|
f(`foo {bar="baz",aa="",x="y",="z"} 1 2`, &Rows{
|
|
Rows: []Row{{
|
|
Metric: "foo",
|
|
Tags: []Tag{
|
|
{
|
|
Key: "bar",
|
|
Value: "baz",
|
|
},
|
|
{
|
|
Key: "aa",
|
|
Value: "",
|
|
},
|
|
{
|
|
Key: "x",
|
|
Value: "y",
|
|
},
|
|
},
|
|
Value: 1,
|
|
Timestamp: 2000,
|
|
}},
|
|
})
|
|
|
|
// Trailing comma after tag
|
|
// See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/350
|
|
f(`foo{bar="baz",} 1 2`, &Rows{
|
|
Rows: []Row{{
|
|
Metric: "foo",
|
|
Tags: []Tag{{
|
|
Key: "bar",
|
|
Value: "baz",
|
|
}},
|
|
Value: 1,
|
|
Timestamp: 2000,
|
|
}},
|
|
})
|
|
|
|
// Multi lines
|
|
f("# foo\n # bar ba zzz\nfoo 0.3 2\naaa 3\nbar.baz 0.34 43\n", &Rows{
|
|
Rows: []Row{
|
|
{
|
|
Metric: "foo",
|
|
Value: 0.3,
|
|
Timestamp: 2000,
|
|
},
|
|
{
|
|
Metric: "aaa",
|
|
Value: 3,
|
|
},
|
|
{
|
|
Metric: "bar.baz",
|
|
Value: 0.34,
|
|
Timestamp: 43000,
|
|
},
|
|
},
|
|
})
|
|
|
|
// Multi lines with invalid line
|
|
f("\t foo\t { } 0.3\t 2\naaa\n bar.baz 0.34 43\n", &Rows{
|
|
Rows: []Row{
|
|
{
|
|
Metric: "foo",
|
|
Value: 0.3,
|
|
Timestamp: 2000,
|
|
},
|
|
{
|
|
Metric: "bar.baz",
|
|
Value: 0.34,
|
|
Timestamp: 43000,
|
|
},
|
|
},
|
|
})
|
|
|
|
// Spaces around tags
|
|
f(`vm_accounting { name="vminsertRows", accountID = "1" , projectID= "1" } 277779100`, &Rows{
|
|
Rows: []Row{
|
|
{
|
|
Metric: "vm_accounting",
|
|
Tags: []Tag{
|
|
{
|
|
Key: "name",
|
|
Value: "vminsertRows",
|
|
},
|
|
{
|
|
Key: "accountID",
|
|
Value: "1",
|
|
},
|
|
{
|
|
Key: "projectID",
|
|
Value: "1",
|
|
},
|
|
},
|
|
Value: 277779100,
|
|
Timestamp: 0,
|
|
},
|
|
},
|
|
})
|
|
}
|