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Improving normalization patterns #968

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9c258bf
upgrade filepath and datetime, change func normalizeByScanner, add te…
Gwynbleidd0241 Apr 23, 2026
6978047
add examples in genBenchInput
Gwynbleidd0241 Apr 23, 2026
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8 changes: 4 additions & 4 deletions plugin/action/hash/normalize/token_normalizer.go
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Original file line number Diff line number Diff line change
Expand Up @@ -268,7 +268,7 @@ func (n *tokenNormalizer) normalizeByScanner(out []byte, scanner *lexmachine.Sca
prevEnd := 0
for tokRaw, err, eos := scanner.Next(); !eos; tokRaw, err, eos = scanner.Next() {
if ui, is := err.(*machines.UnconsumedInput); is {
scanner.TC = ui.FailTC // skip
scanner.TC = max(scanner.TC+1, ui.FailTC-1) // skip
continue
} else if err != nil {
out = out[:0]
Expand Down Expand Up @@ -484,7 +484,7 @@ var builtinTokenPatterns = []TokenPattern{
},
{
Placeholder: placeholderByPattern[pFilepath],
RE: `(/[a-zA-Z0-9-_.]+)+`,
RE: `(/[a-zA-Z-_.][a-zA-Z0-9-_.]*)+`,
mask: pFilepath,
},
{
Expand All @@ -511,10 +511,10 @@ var builtinTokenPatterns = []TokenPattern{
mask: pHash,
},
{
// RFC3339, RFC3339Nano, DateTime, DateOnly, TimeOnly, Go time with monotonic clock
// RFC3339, RFC3339Nano, DateTime, DateOnly, TimeOnly, Go time with optional monotonic clock
Placeholder: placeholderByPattern[pDatetime],
RE: fmt.Sprintf(`(%s)|(%s)|(%s)|(%s)`,
`\d\d\d\d-\d\d-\d\d \d\d:\d\d:\d\d\.\d+ [+\-]\d\d\d\d [A-Z]+ m=[+\-]\d+\.\d+`,
`\d\d\d\d-\d\d-\d\d \d\d:\d\d:\d\d\.\d+ [+\-]\d\d\d\d [A-Z]+( m=[+\-]\d+\.\d+)?`,
`\d\d\d\d-\d\d-\d\dT\d\d:\d\d:\d\d(\.\d+)?(Z|[\+\-]\d\d:\d\d)`,
`\d\d:\d\d:\d\d`,
`\d\d\d\d-\d\d-\d\d( \d\d:\d\d:\d\d)?`,
Expand Down
34 changes: 19 additions & 15 deletions plugin/action/hash/normalize/token_normalizer_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -265,6 +265,8 @@ func TestTokenNormalizerBuiltin(t *testing.T) {
"some 2025-01-13 20:58:04.019973588 +0000 UTC m=+1417512.275697914 here",
"some 2025-01-13 20:58:04.019973588 -0700 MST m=-123.456789012 here",
"some 2025-01-13 20:58:04.019973588 +0300 MSK m=+0.123456789 here",
"some 2025-01-13 20:58:04.019973588 -0700 MST here",
"some 2025-01-13 20:58:04.019973588 +0300 MSK here",
"some 2025-01-13T10:20:40Z here",
"some 2025-01-13T10:20:40.999999999Z here",
"some 2025-01-13T10:20:40-06:00 here",
Expand Down Expand Up @@ -470,9 +472,9 @@ func TestTokenNormalizerCustom(t *testing.T) {
},
},
inputs: []string{
`2006/01/02 15:04:05 error occurred, client: 10.125.172.251, upstream: "http://10.117.246.15:84/download", host: "mpm-youtube-downloader-38.name.com:84"`,
`2006/01/02 15:04:05 error occurred, client: 10.125.172.251, upstream: "http://10.117.246.15:84/download", host: "mpm-youtube-downloader-38.name.com:84", part/offset: 10117/2461584`,
},
want: "<nginx_datetime> error occurred, client: <ip>, upstream: <double_quoted>, host: <double_quoted>",
want: "<nginx_datetime> error occurred, client: <ip>, upstream: <double_quoted>, host: <double_quoted>, part/offset: <int>/<int>",
},
{
name: "empty_patterns",
Expand Down Expand Up @@ -515,19 +517,21 @@ func TestTokenNormalizerCustom(t *testing.T) {

func genBenchInput(count int) []byte {
var examples = []string{
"s1mple falsehood", // no match
"test@host1.host2.com", // email
"http://some.host.com/page1?a=1", // url
"hello-world-123.COM", // host
"7c1811ed-e98f-4c9c-a9f9-58c757ff494f", // uuid
"a94a8fe5ccb19ba61c4c0873d391e987982fbbd3", // sha1
"098f6bcd4621d373cade4e832627b4f6", // md5
"2025-01-13T10:20:40Z", // datetime
"1.2.3.4", // ip
"-1.2m5s", // duration
"0x13eb85e69dfbc0758b12acdaae36287d", // hex
"-4.56", // float
"123", // int
"48757ec9f04efe7faacec8722f3476339b125a6b6172b8a69ff3aa329e0bd0ff", // hash(sha256)
"a94a8fe5ccb19ba61c4c0873d391e987982fbbd3", // hash(sha1)
"098f6bcd4621d373cade4e832627b4f6", // hash(md5)
"s1mple falsehood", // no match
"test@host1.host2.com", // email
"http://some.host.com/page1?a=1", // url
"hello-world-123.COM", // host
"7c1811ed-e98f-4c9c-a9f9-58c757ff494f", // uuid
"/home/user/photos", // filepath
"2025-01-13T10:20:40Z", // datetime
"1.2.3.4", // ip
"-1.2m5s", // duration
"0x13eb85e69dfbc0758b12acdaae36287d", // hex
"-4.56", // float
"123", // int
"truE faLse",
}

Expand Down
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