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parser_test.go
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package log
import (
"fmt"
"sort"
"testing"
"github.com/grafana/loki/v3/pkg/logqlmodel"
"github.com/prometheus/prometheus/model/labels"
"github.com/stretchr/testify/require"
)
func Test_jsonParser_Parse(t *testing.T) {
tests := []struct {
name string
line []byte
lbs labels.Labels
want labels.Labels
hints ParserHint
}{
{
"multi depth",
[]byte(`{"app":"foo","namespace":"prod","pod":{"uuid":"foo","deployment":{"ref":"foobar"}}}`),
labels.EmptyLabels(),
labels.FromStrings("app", "foo",
"namespace", "prod",
"pod_uuid", "foo",
"pod_deployment_ref", "foobar",
),
NoParserHints(),
},
{
"numeric",
[]byte(`{"counter":1, "price": {"_net_":5.56909}}`),
labels.EmptyLabels(),
labels.FromStrings("counter", "1",
"price__net_", "5.56909",
),
NoParserHints(),
},
{
"whitespace key value",
[]byte(`{" ": {"foo":"bar"}}`),
labels.EmptyLabels(),
labels.FromStrings("foo", "bar"),
NoParserHints(),
},
{
"whitespace key and whitespace subkey values",
[]byte(`{" ": {" ":"bar"}}`),
labels.EmptyLabels(),
labels.FromStrings("", "bar"),
NoParserHints(),
},
{
"whitespace key and empty subkey values",
[]byte(`{" ": {"":"bar"}}`),
labels.EmptyLabels(),
labels.FromStrings("", "bar"),
NoParserHints(),
},
{
"empty key and empty subkey values",
[]byte(`{"": {"":"bar"}}`),
labels.EmptyLabels(),
labels.FromStrings("", "bar"),
NoParserHints(),
},
{
"escaped",
[]byte(`{"counter":1,"foo":"foo\\\"bar", "price": {"_net_":5.56909}}`),
labels.EmptyLabels(),
labels.FromStrings("counter", "1",
"price__net_", "5.56909",
"foo", `foo\"bar`,
),
NoParserHints(),
},
{
"utf8 error rune",
[]byte(`{"counter":1,"foo":"�", "price": {"_net_":5.56909}}`),
labels.EmptyLabels(),
labels.FromStrings("counter", "1",
"price__net_", "5.56909",
"foo", " ",
),
NoParserHints(),
},
{
"skip arrays",
[]byte(`{"counter":1, "price": {"net_":["10","20"]}}`),
labels.EmptyLabels(),
labels.FromStrings("counter", "1"),
NoParserHints(),
},
{
"bad key replaced",
[]byte(`{"cou-nter":1}`),
labels.EmptyLabels(),
labels.FromStrings("cou_nter", "1"),
NoParserHints(),
},
{
"errors",
[]byte(`{n}`),
labels.EmptyLabels(),
labels.FromStrings("__error__", "JSONParserErr",
"__error_details__", "Value looks like object, but can't find closing '}' symbol",
),
NoParserHints(),
},
{
"errors hints",
[]byte(`{n}`),
labels.EmptyLabels(),
labels.FromStrings("__error__", "JSONParserErr",
"__error_details__", "Value looks like object, but can't find closing '}' symbol",
"__preserve_error__", "true",
),
NewParserHint([]string{"__error__"}, nil, false, true, "", nil),
},
{
"duplicate extraction",
[]byte(`{"app":"foo","namespace":"prod","pod":{"uuid":"foo","deployment":{"ref":"foobar"}},"next":{"err":false}}`),
labels.FromStrings("app", "bar"),
labels.FromStrings("app", "bar",
"app_extracted", "foo",
"namespace", "prod",
"pod_uuid", "foo",
"next_err", "false",
"pod_deployment_ref", "foobar",
),
NoParserHints(),
},
}
for _, tt := range tests {
j := NewJSONParser()
t.Run(tt.name, func(t *testing.T) {
b := NewBaseLabelsBuilderWithGrouping(nil, tt.hints, false, false).ForLabels(tt.lbs, tt.lbs.Hash())
b.Reset()
_, _ = j.Process(0, tt.line, b)
require.Equal(t, tt.want, b.LabelsResult().Labels())
})
}
}
func TestKeyShortCircuit(t *testing.T) {
jsonLine := []byte(`{"invalid":"a\\xc5z","proxy_protocol_addr": "","remote_addr": "3.112.221.14","remote_user": "","upstream_addr": "10.12.15.234:5000","the_real_ip": "3.112.221.14","timestamp": "2020-12-11T16:20:07+00:00","protocol": "HTTP/1.1","upstream_name": "hosted-grafana-hosted-grafana-api-80","request": {"id": "c8eacb6053552c0cd1ae443bc660e140","time": "0.001","method" : "GET","host": "hg-api-qa-us-central1.grafana.net","uri": "/","size" : "128","user_agent": "worldping-api-","referer": ""},"response": {"status": 200,"upstream_status": "200","size": "1155","size_sent": "265","latency_seconds": "0.001"}}`)
logfmtLine := []byte(`level=info ts=2020-12-14T21:25:20.947307459Z caller=metrics.go:83 org_id=29 traceID=c80e691e8db08e2 latency=fast query="sum by (object_name) (rate(({container=\"metrictank\", cluster=\"hm-us-east2\"} |= \"PANIC\")[5m]))" query_type=metric range_type=range length=5m0s step=15s duration=322.623724ms status=200 throughput=1.2GB total_bytes=375MB`)
nginxline := []byte(`10.1.0.88 - - [14/Dec/2020:22:56:24 +0000] "GET /static/img/about/bob.jpg HTTP/1.1" 200 60755 "https://grafana.com/go/observabilitycon/grafana-the-open-and-composable-observability-platform/?tech=ggl-o&pg=oss-graf&plcmt=hero-txt" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.0.1 Safari/605.1.15" "123.123.123.123, 35.35.122.223" "TLSv1.3"`)
packedLike := []byte(`{"job":"123","pod":"someuid123","app":"foo","_entry":"10.1.0.88 - - [14/Dec/2020:22:56:24 +0000] GET /static/img/about/bob.jpg HTTP/1.1"}`)
lbs := NewBaseLabelsBuilder().ForLabels(labels.EmptyLabels(), 0)
hints := newFakeParserHints()
hints.extractAll = true
hints.keepGoing = false
lbs.parserKeyHints = hints
for _, tt := range []struct {
name string
line []byte
p Stage
LabelFilterParseHint *labels.Matcher
}{
{"json", jsonLine, NewJSONParser(), labels.MustNewMatcher(labels.MatchEqual, "response_latency_seconds", "nope")},
{"unpack", packedLike, NewUnpackParser(), labels.MustNewMatcher(labels.MatchEqual, "pod", "nope")},
{"logfmt", logfmtLine, NewLogfmtParser(false, false), labels.MustNewMatcher(labels.MatchEqual, "info", "nope")},
{"regex greedy", nginxline, mustStage(NewRegexpParser(`GET (?P<path>.*?)/\?`)), labels.MustNewMatcher(labels.MatchEqual, "path", "nope")},
{"pattern", nginxline, mustStage(NewPatternParser(`<_> "<method> <path> <_>"<_>`)), labels.MustNewMatcher(labels.MatchEqual, "method", "nope")},
} {
lbs.Reset()
t.Run(tt.name, func(t *testing.T) {
_, result = tt.p.Process(0, tt.line, lbs)
require.Len(t, lbs.labels(), 1)
require.False(t, result)
})
}
}
func TestLabelShortCircuit(t *testing.T) {
simpleJsn := []byte(`{
"data": "Click Here",
"size": 36,
"style": "bold",
"name": "text1",
"name": "duplicate",
"hOffset": 250,
"vOffset": 100,
"alignment": "center",
"onMouseUp": "sun1.opacity = (sun1.opacity / 100) * 90;"
}`)
logFmt := []byte(`data="ClickHere" size=36 style=bold name=text1 name=duplicate hOffset=250 vOffset=100 alignment=center onMouseUp="sun1.opacity = (sun1.opacity / 100) * 90;"`)
hints := newFakeParserHints()
hints.label = "name"
lbs := NewBaseLabelsBuilder().ForLabels(labels.EmptyLabels(), 0)
lbs.parserKeyHints = hints
tests := []struct {
name string
p Stage
line []byte
}{
{"json", NewJSONParser(), simpleJsn},
{"logfmt", NewLogfmtParser(false, false), logFmt},
{"logfmt-expression", mustStage(NewLogfmtExpressionParser([]LabelExtractionExpr{NewLabelExtractionExpr("name", "name")}, false)), logFmt},
}
for _, tt := range tests {
lbs.Reset()
t.Run(tt.name, func(t *testing.T) {
_, result = tt.p.Process(0, tt.line, lbs)
require.Len(t, lbs.labels(), 1)
name, category, ok := lbs.GetWithCategory("name")
require.True(t, ok)
require.Equal(t, ParsedLabel, category)
require.Contains(t, name, "text1")
})
}
}
func newFakeParserHints() *fakeParseHints {
return &fakeParseHints{
keepGoing: true,
}
}
type fakeParseHints struct {
label string
checkCount int
count int
keepGoing bool
extractAll bool
}
func (p *fakeParseHints) ShouldExtract(key string) bool {
p.checkCount++
return key == p.label || p.extractAll
}
func (p *fakeParseHints) ShouldExtractPrefix(prefix string) bool {
return prefix == p.label || p.extractAll
}
func (p *fakeParseHints) NoLabels() bool {
return false
}
func (p *fakeParseHints) RecordExtracted(_ string) {
p.count++
}
func (p *fakeParseHints) AllRequiredExtracted() bool {
return !p.extractAll && p.count == 1
}
func (p *fakeParseHints) Reset() {
p.checkCount = 0
p.count = 0
}
func (p *fakeParseHints) PreserveError() bool {
return false
}
func (p *fakeParseHints) ShouldContinueParsingLine(_ string, _ *LabelsBuilder) bool {
return p.keepGoing
}
func TestJSONExpressionParser(t *testing.T) {
testLine := []byte(`{"app":"foo","field with space":"value","field with ÜFT8👌":"value","null_field":null,"bool_field":false,"namespace":"prod","pod":{"uuid":"foo","deployment":{"ref":"foobar", "params": [1,2,3,"string_value"]}}}`)
tests := []struct {
name string
line []byte
expressions []LabelExtractionExpr
lbs labels.Labels
want labels.Labels
hints ParserHint
}{
{
"single field",
testLine,
[]LabelExtractionExpr{
NewLabelExtractionExpr("app", "app"),
},
labels.EmptyLabels(),
labels.FromStrings("app", "foo"),
NoParserHints(),
},
{
"alternate syntax",
testLine,
[]LabelExtractionExpr{
NewLabelExtractionExpr("test", `["field with space"]`),
},
labels.EmptyLabels(),
labels.FromStrings("test", "value"),
NoParserHints(),
},
{
"multiple fields",
testLine,
[]LabelExtractionExpr{
NewLabelExtractionExpr("app", "app"),
NewLabelExtractionExpr("namespace", "namespace"),
},
labels.EmptyLabels(),
labels.FromStrings("app", "foo",
"namespace", "prod",
),
NoParserHints(),
},
{
"utf8",
testLine,
[]LabelExtractionExpr{
NewLabelExtractionExpr("utf8", `["field with ÜFT8👌"]`),
},
labels.EmptyLabels(),
labels.FromStrings("utf8", "value"),
NoParserHints(),
},
{
"nested field",
testLine,
[]LabelExtractionExpr{
NewLabelExtractionExpr("uuid", "pod.uuid"),
},
labels.EmptyLabels(),
labels.FromStrings("uuid", "foo"),
NoParserHints(),
},
{
"nested field alternate syntax",
testLine,
[]LabelExtractionExpr{
NewLabelExtractionExpr("uuid", `pod["uuid"]`),
},
labels.EmptyLabels(),
labels.FromStrings("uuid", "foo"),
NoParserHints(),
},
{
"nested field alternate syntax 2",
testLine,
[]LabelExtractionExpr{
NewLabelExtractionExpr("uuid", `["pod"]["uuid"]`),
},
labels.EmptyLabels(),
labels.FromStrings("uuid", "foo"),
NoParserHints(),
},
{
"nested field alternate syntax 3",
testLine,
[]LabelExtractionExpr{
NewLabelExtractionExpr("uuid", `["pod"].uuid`),
},
labels.EmptyLabels(),
labels.FromStrings("uuid", "foo"),
NoParserHints(),
},
{
"array element",
testLine,
[]LabelExtractionExpr{
NewLabelExtractionExpr("param", `pod.deployment.params[0]`),
},
labels.EmptyLabels(),
labels.FromStrings("param", "1"),
NoParserHints(),
},
{
"object element not present",
testLine,
[]LabelExtractionExpr{
NewLabelExtractionExpr("undefined", `pod[""]`),
},
labels.EmptyLabels(),
labels.FromStrings("undefined", ""),
NoParserHints(),
},
{
"accessing invalid array index",
testLine,
[]LabelExtractionExpr{
NewLabelExtractionExpr("param", `pod.deployment.params[""]`),
},
labels.EmptyLabels(),
labels.FromStrings("param", ""),
NoParserHints(),
},
{
"array string element",
testLine,
[]LabelExtractionExpr{
NewLabelExtractionExpr("param", `pod.deployment.params[3]`),
},
labels.EmptyLabels(),
labels.FromStrings("param", "string_value"),
NoParserHints(),
},
{
"full array",
testLine,
[]LabelExtractionExpr{
NewLabelExtractionExpr("params", `pod.deployment.params`),
},
labels.EmptyLabels(),
labels.FromStrings("params", `[1,2,3,"string_value"]`),
NoParserHints(),
},
{
"full object",
testLine,
[]LabelExtractionExpr{
NewLabelExtractionExpr("deployment", `pod.deployment`),
},
labels.EmptyLabels(),
labels.FromStrings("deployment", `{"ref":"foobar", "params": [1,2,3,"string_value"]}`),
NoParserHints(),
},
{
"expression matching nothing",
testLine,
[]LabelExtractionExpr{
NewLabelExtractionExpr("nope", `pod.nope`),
},
labels.EmptyLabels(),
labels.FromStrings("nope", ""),
NoParserHints(),
},
{
"null field",
testLine,
[]LabelExtractionExpr{
NewLabelExtractionExpr("nf", `null_field`),
},
labels.EmptyLabels(),
labels.FromStrings("nf", ""), // null is coerced to an empty string
NoParserHints(),
},
{
"boolean field",
testLine,
[]LabelExtractionExpr{
NewLabelExtractionExpr("bool", `bool_field`),
},
labels.EmptyLabels(),
labels.FromStrings("bool", `false`),
NoParserHints(),
},
{
"label override",
testLine,
[]LabelExtractionExpr{
NewLabelExtractionExpr("uuid", `pod.uuid`),
},
labels.FromStrings("uuid", "bar"),
labels.FromStrings("uuid", "bar",
"uuid_extracted", "foo",
),
NoParserHints(),
},
{
"non-matching expression",
testLine,
[]LabelExtractionExpr{
NewLabelExtractionExpr("request_size", `request.size.invalid`),
},
labels.FromStrings("uuid", "bar"),
labels.FromStrings("uuid", "bar",
"request_size", "",
),
NoParserHints(),
},
{
"empty line",
[]byte("{}"),
[]LabelExtractionExpr{
NewLabelExtractionExpr("uuid", `pod.uuid`),
},
labels.EmptyLabels(),
labels.FromStrings("uuid", ""),
NoParserHints(),
},
{
"existing labels are not affected",
testLine,
[]LabelExtractionExpr{
NewLabelExtractionExpr("uuid", `will.not.work`),
},
labels.FromStrings("foo", "bar"),
labels.FromStrings("foo", "bar",
"uuid", "",
),
NoParserHints(),
},
{
"invalid JSON line",
[]byte(`invalid json`),
[]LabelExtractionExpr{
NewLabelExtractionExpr("uuid", `will.not.work`),
},
labels.FromStrings("foo", "bar"),
labels.FromStrings("foo", "bar",
logqlmodel.ErrorLabel, errJSON,
),
NoParserHints(),
},
{
"invalid JSON line with hints",
[]byte(`invalid json`),
[]LabelExtractionExpr{
NewLabelExtractionExpr("uuid", `will.not.work`),
},
labels.FromStrings("foo", "bar"),
labels.FromStrings("foo", "bar",
logqlmodel.ErrorLabel, errJSON,
logqlmodel.PreserveErrorLabel, "true",
),
NewParserHint([]string{"__error__"}, nil, false, true, "", nil),
},
{
"empty line",
[]byte(``),
[]LabelExtractionExpr{
NewLabelExtractionExpr("uuid", `will.not.work`),
},
labels.FromStrings("foo", "bar"),
labels.FromStrings("foo", "bar"),
NoParserHints(),
},
{
"nested escaped object",
[]byte(`{"app":"{ \"key\": \"value\", \"key2\":\"value2\"}"}`),
[]LabelExtractionExpr{
NewLabelExtractionExpr("app", `app`),
},
labels.FromStrings("foo", "bar"),
labels.FromStrings("foo", "bar",
"app", `{ "key": "value", "key2":"value2"}`,
),
NoParserHints(),
},
}
for _, tt := range tests {
j, err := NewJSONExpressionParser(tt.expressions)
if err != nil {
t.Fatalf("cannot create JSON expression parser: %s", err.Error())
}
t.Run(tt.name, func(t *testing.T) {
b := NewBaseLabelsBuilderWithGrouping(nil, tt.hints, false, false).ForLabels(tt.lbs, tt.lbs.Hash())
b.Reset()
_, _ = j.Process(0, tt.line, b)
require.Equal(t, tt.want, b.LabelsResult().Labels())
})
}
}
func TestJSONExpressionParserFailures(t *testing.T) {
tests := []struct {
name string
expression LabelExtractionExpr
error string
}{
{
"invalid field name",
NewLabelExtractionExpr("app", `field with space`),
"unexpected FIELD",
},
{
"missing opening square bracket",
NewLabelExtractionExpr("app", `"pod"]`),
"unexpected STRING, expecting LSB or FIELD",
},
{
"missing closing square bracket",
NewLabelExtractionExpr("app", `["pod"`),
"unexpected $end, expecting RSB",
},
{
"missing closing square bracket",
NewLabelExtractionExpr("app", `["pod""uuid"]`),
"unexpected STRING, expecting RSB",
},
{
"invalid nesting",
NewLabelExtractionExpr("app", `pod..uuid`),
"unexpected DOT, expecting FIELD",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
_, err := NewJSONExpressionParser([]LabelExtractionExpr{tt.expression})
require.NotNil(t, err)
require.Equal(t, err.Error(), fmt.Sprintf("cannot parse expression [%s]: syntax error: %s", tt.expression.Expression, tt.error))
})
}
}
func Benchmark_Parser(b *testing.B) {
lbs := labels.FromStrings("cluster", "qa-us-central1",
"namespace", "qa",
"filename", "/var/log/pods/ingress-nginx_nginx-ingress-controller-7745855568-blq6t_1f8962ef-f858-4188-a573-ba276a3cacc3/ingress-nginx/0.log",
"job", "ingress-nginx/nginx-ingress-controller",
"name", "nginx-ingress-controller",
"pod", "nginx-ingress-controller-7745855568-blq6t",
"pod_template_hash", "7745855568",
"stream", "stdout",
)
jsonLine := `{"invalid":"a\\xc5z","proxy_protocol_addr": "","remote_addr": "3.112.221.14","remote_user": "","upstream_addr": "10.12.15.234:5000","the_real_ip": "3.112.221.14","timestamp": "2020-12-11T16:20:07+00:00","protocol": "HTTP/1.1","upstream_name": "hosted-grafana-hosted-grafana-api-80","request": {"id": "c8eacb6053552c0cd1ae443bc660e140","time": "0.001","method" : "GET","host": "hg-api-qa-us-central1.grafana.net","uri": "/","size" : "128","user_agent": "worldping-api-","referer": ""},"response": {"status": 200,"upstream_status": "200","size": "1155","size_sent": "265","latency_seconds": "0.001"}}`
logfmtLine := `level=info ts=2020-12-14T21:25:20.947307459Z caller=metrics.go:83 org_id=29 traceID=c80e691e8db08e2 latency=fast query="sum by (object_name) (rate(({container=\"metrictank\", cluster=\"hm-us-east2\"} |= \"PANIC\")[5m]))" query_type=metric range_type=range length=5m0s step=15s duration=322.623724ms status=200 throughput=1.2GB total_bytes=375MB`
nginxline := `10.1.0.88 - - [14/Dec/2020:22:56:24 +0000] "GET /static/img/about/bob.jpg HTTP/1.1" 200 60755 "https://grafana.com/go/observabilitycon/grafana-the-open-and-composable-observability-platform/?tech=ggl-o&pg=oss-graf&plcmt=hero-txt" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.0.1 Safari/605.1.15" "123.123.123.123, 35.35.122.223" "TLSv1.3"`
packedLike := `{"job":"123","pod":"someuid123","app":"foo","_entry":"10.1.0.88 - - [14/Dec/2020:22:56:24 +0000] "GET /static/img/about/bob.jpg HTTP/1.1"}`
for _, tt := range []struct {
name string
line string
s Stage
LabelParseHints []string // hints to reduce label extractions.
LabelFilterParseHint *labels.Matcher
}{
{"json", jsonLine, NewJSONParser(), []string{"response_latency_seconds"}, labels.MustNewMatcher(labels.MatchEqual, "the_real_ip", "nope")},
{"jsonParser-not json line", nginxline, NewJSONParser(), []string{"response_latency_seconds"}, labels.MustNewMatcher(labels.MatchEqual, "the_real_ip", "nope")},
{"unpack", packedLike, NewUnpackParser(), []string{"pod"}, labels.MustNewMatcher(labels.MatchEqual, "app", "nope")},
{"unpack-not json line", nginxline, NewUnpackParser(), []string{"pod"}, labels.MustNewMatcher(labels.MatchEqual, "app", "nope")},
{"logfmt", logfmtLine, NewLogfmtParser(false, false), []string{"info", "throughput", "org_id"}, labels.MustNewMatcher(labels.MatchEqual, "latency", "nope")},
{"regex greedy", nginxline, mustStage(NewRegexpParser(`GET (?P<path>.*?)/\?`)), []string{"path"}, labels.MustNewMatcher(labels.MatchEqual, "path", "nope")},
{"regex status digits", nginxline, mustStage(NewRegexpParser(`HTTP/1.1" (?P<statuscode>\d{3}) `)), []string{"statuscode"}, labels.MustNewMatcher(labels.MatchEqual, "status_code", "nope")},
{"pattern", nginxline, mustStage(NewPatternParser(`<_> "<method> <path> <_>"<_>`)), []string{"path"}, labels.MustNewMatcher(labels.MatchEqual, "method", "nope")},
} {
b.Run(tt.name, func(b *testing.B) {
line := []byte(tt.line)
b.Run("no labels hints", func(b *testing.B) {
builder := NewBaseLabelsBuilder().ForLabels(lbs, lbs.Hash())
for n := 0; n < b.N; n++ {
builder.Reset()
_, _ = tt.s.Process(0, line, builder)
}
})
b.Run("labels hints", func(b *testing.B) {
builder := NewBaseLabelsBuilder().ForLabels(lbs, lbs.Hash())
builder.parserKeyHints = NewParserHint(tt.LabelParseHints, tt.LabelParseHints, false, false, "", nil)
for n := 0; n < b.N; n++ {
builder.Reset()
_, _ = tt.s.Process(0, line, builder)
}
})
b.Run("inline stages", func(b *testing.B) {
stages := []Stage{NewStringLabelFilter(tt.LabelFilterParseHint)}
builder := NewBaseLabelsBuilder().ForLabels(lbs, lbs.Hash())
builder.parserKeyHints = NewParserHint(nil, nil, false, false, ", nil", stages)
for n := 0; n < b.N; n++ {
builder.Reset()
_, _ = tt.s.Process(0, line, builder)
}
})
})
}
}
func BenchmarkKeyExtraction(b *testing.B) {
simpleJsn := []byte(`{
"data": "Click Here",
"size": 36,
"style": "bold",
"name": "text1",
"hOffset": 250,
"vOffset": 100,
"alignment": "center",
"onMouseUp": "sun1.opacity = (sun1.opacity / 100) * 90;"
}`)
logFmt := []byte(`data="Click Here" size=36 style=bold name=text1 hOffset=250 vOffset=100 alignment=center onMouseUp="sun1.opacity = (sun1.opacity / 100) * 90;"`)
lbs := NewBaseLabelsBuilder().ForLabels(labels.EmptyLabels(), 0)
lbs.parserKeyHints = NewParserHint([]string{"name"}, nil, false, true, "", nil)
benchmarks := []struct {
name string
p Stage
line []byte
}{
{"json", NewJSONParser(), simpleJsn},
{"logfmt", NewLogfmtParser(false, false), logFmt},
{"logfmt-expression", mustStage(NewLogfmtExpressionParser([]LabelExtractionExpr{NewLabelExtractionExpr("name", "name")}, false)), logFmt},
}
for _, bb := range benchmarks {
b.Run(bb.name, func(b *testing.B) {
b.ResetTimer()
for n := 0; n < b.N; n++ {
lbs.Reset()
_, result = bb.p.Process(0, bb.line, lbs)
}
})
}
}
func mustStage(s Stage, err error) Stage {
if err != nil {
panic(err)
}
return s
}
func TestNewRegexpParser(t *testing.T) {
tests := []struct {
name string
re string
wantErr bool
}{
{"no sub", "w.*", true},
{"sub but not named", "f(.*) (foo|bar|buzz)", true},
{"named and unamed", "blah (.*) (?P<foo>)", false},
{"named", "blah (.*) (?P<foo>foo)(?P<bar>barr)", false},
{"invalid name", "blah (.*) (?P<foo$>foo)(?P<bar>barr)", true},
{"duplicate", "blah (.*) (?P<foo>foo)(?P<foo>barr)", true},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
_, err := NewRegexpParser(tt.re)
if (err != nil) != tt.wantErr {
t.Errorf("NewRegexpParser() error = %v, wantErr %v", err, tt.wantErr)
return
}
})
}
}
func Test_regexpParser_Parse(t *testing.T) {
tests := []struct {
name string
parser Stage
line []byte
lbs labels.Labels
want labels.Labels
}{
{
"no matches",
mustStage(NewRegexpParser("(?P<foo>foo|bar)buzz")),
[]byte("blah"),
labels.FromStrings("app", "foo"),
labels.FromStrings("app", "foo"),
},
{
"double matches",
mustStage(NewRegexpParser("(?P<foo>.*)buzz")),
[]byte("matchebuzz barbuzz"),
labels.FromStrings("app", "bar"),
labels.FromStrings("app", "bar",
"foo", "matchebuzz bar",
),
},
{
"duplicate labels",
mustStage(NewRegexpParser("(?P<bar>bar)buzz")),
[]byte("barbuzz"),
labels.FromStrings("bar", "foo"),
labels.FromStrings("bar", "foo",
"bar_extracted", "bar",
),
},
{
"multiple labels extracted",
mustStage(NewRegexpParser("status=(?P<status>\\w+),latency=(?P<latency>\\w+)(ms|ns)")),
[]byte("status=200,latency=500ms"),
labels.FromStrings("app", "foo"),
labels.FromStrings("app", "foo",
"status", "200",
"latency", "500",
),
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
b := NewBaseLabelsBuilder().ForLabels(tt.lbs, tt.lbs.Hash())
b.Reset()
_, _ = tt.parser.Process(0, tt.line, b)
require.Equal(t, tt.want, b.LabelsResult().Labels())
})
}
}
func TestLogfmtParser_parse(t *testing.T) {
tests := []struct {
name string
line []byte
lbs labels.Labels
want labels.Labels
wantStrict labels.Labels
hints ParserHint
}{
{
"not logfmt",
[]byte("foobar====wqe=sdad1r"),
labels.FromStrings("foo", "bar"),
labels.FromStrings("foo", "bar"),
labels.FromStrings("foo", "bar",
"__error__", "LogfmtParserErr",
"__error_details__", "logfmt syntax error at pos 8 : unexpected '='",
),
NoParserHints(),
},
{
"not logfmt with hints",
[]byte("foobar====wqe=sdad1r"),
labels.FromStrings("foo", "bar"),
labels.FromStrings("foo", "bar"),
labels.FromStrings("foo", "bar",
"__error__", "LogfmtParserErr",
"__error_details__", "logfmt syntax error at pos 8 : unexpected '='",
"__preserve_error__", "true",
),
NewParserHint([]string{"__error__"}, nil, false, true, "", nil),
},
{
"utf8 error rune",
[]byte(`buzz=foo bar=�f`),
labels.EmptyLabels(),
labels.FromStrings("bar", " f", "buzz", "foo"),
nil,
NoParserHints(),
},
{
"key alone logfmt",
[]byte("buzz bar=foo"),
labels.FromStrings("foo", "bar"),
labels.FromStrings("foo", "bar",
"bar", "foo"),
nil,
NoParserHints(),
},
{
"quoted logfmt",
[]byte(`foobar="foo bar"`),
labels.FromStrings("foo", "bar"),
labels.FromStrings("foo", "bar",
"foobar", "foo bar",
),
nil,
NoParserHints(),
},
{
"escaped control chars in logfmt",
[]byte(`foobar="foo\nbar\tbaz"`),
labels.FromStrings("a", "b"),
labels.FromStrings("a", "b",
"foobar", "foo\nbar\tbaz",
),
nil,
NoParserHints(),
},
{
"literal control chars in logfmt",
[]byte("foobar=\"foo\nbar\tbaz\""),
labels.FromStrings("a", "b"),
labels.FromStrings("a", "b",
"foobar", "foo\nbar\tbaz",
),
nil,
NoParserHints(),
},
{
"escaped slash logfmt",
[]byte(`foobar="foo ba\\r baz"`),
labels.FromStrings("a", "b"),
labels.FromStrings("a", "b",
"foobar", `foo ba\r baz`,
),
nil,
NoParserHints(),
},
{
"literal newline and escaped slash logfmt",
[]byte("foobar=\"foo bar\nb\\\\az\""),
labels.FromStrings("a", "b"),
labels.FromStrings("a", "b",
"foobar", "foo bar\nb\\az",
),
nil,
NoParserHints(),
},
{
"double property logfmt",
[]byte(`foobar="foo bar" latency=10ms`),
labels.FromStrings("foo", "bar"),
labels.FromStrings("foo", "bar",
"foobar", "foo bar",
"latency", "10ms",
),
nil,
NoParserHints(),
},
{
"duplicate from line property",
[]byte(`foobar="foo bar" foobar=10ms`),
labels.FromStrings("foo", "bar"),
labels.FromStrings("foo", "bar",
"foobar", "10ms",
),
nil,
NoParserHints(),
},
{
"duplicate property",
[]byte(`foo="foo bar" foobar=10ms`),
labels.FromStrings("foo", "bar"),
labels.FromStrings("foo", "bar",
"foo_extracted", "foo bar",
"foobar", "10ms",
),
nil,
NoParserHints(),
},
{
"invalid key names",
[]byte(`foo="foo bar" foo.bar=10ms test-dash=foo`),
labels.FromStrings("foo", "bar"),
labels.FromStrings("foo", "bar",
"foo_extracted", "foo bar",
"foo_bar", "10ms",
"test_dash", "foo",
),
nil,
NoParserHints(),
},
{
"nil",
nil,
labels.FromStrings("foo", "bar"),
labels.FromStrings("foo", "bar"),
nil,
NoParserHints(),
},
{
"empty key",
[]byte(`foo="foo bar" =notkey bar=10ms`),
labels.FromStrings("foo", "bar"),
labels.FromStrings("foo", "bar",
"foo_extracted", "foo bar",
"bar", "10ms",
),
labels.FromStrings("foo", "bar",
"foo_extracted", "foo bar",
"__error__", "LogfmtParserErr",
"__error_details__", "logfmt syntax error at pos 15 : unexpected '='",
),
NoParserHints(),
},
{
"error rune in key",
[]byte(`foo="foo bar" b�r=10ms`),
labels.FromStrings("foo", "bar"),
labels.FromStrings("foo", "bar",
"foo_extracted", "foo bar",
),
labels.FromStrings("foo", "bar",
"foo_extracted", "foo bar",
"__error__", "LogfmtParserErr",
"__error_details__", "logfmt syntax error at pos 20 : invalid key",
),
NoParserHints(),
},
{
"double quote in key",
[]byte(`foo="foo bar" bu"zz=10ms`),
labels.FromStrings("foo", "bar"),
labels.FromStrings("foo", "bar",
"foo_extracted", "foo bar",
),
labels.FromStrings("foo", "bar",
"foo_extracted", "foo bar",
"__error__", "LogfmtParserErr",
"__error_details__", `logfmt syntax error at pos 17 : unexpected '"'`,
),
NoParserHints(),
},
{
"= in value",
[]byte(`bar=bu=zz foo="foo bar"`),
labels.FromStrings("foo", "bar"),
labels.FromStrings("foo", "bar",
"foo_extracted", "foo bar",
),
labels.FromStrings("foo", "bar",
"__error__", "LogfmtParserErr",
"__error_details__", `logfmt syntax error at pos 7 : unexpected '='`,
),
NoParserHints(),
},
}
{
p := NewLogfmtParser(false, false)
for _, tt := range tests {