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d58b07b2a7
ScanPackument and LookupVersion read with a jsontext.Decoder, skipping values they don't keep with SkipValue and reading the one LookupVersion returns with ReadValue, instead of decoding each into a json.RawMessage. Repeated names and invalid UTF-8 are still accepted as encoding/json accepts them. Go 1.27 is now required, for encoding/json/jsontext. Benchmarks for both use the 5,000-version packument the handler benchmarks build, now shared in internal/metadata/npm/npmbench.
42 lines
1.5 KiB
Go
42 lines
1.5 KiB
Go
// Package npmbench builds npm packuments for benchmarks.
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package npmbench
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import (
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"fmt"
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"strings"
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)
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// readmeSentences makes each version's readme about 4KB.
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const readmeSentences = 160
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// Packument builds a full packument shaped like a large real one: versions
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// 1.0.0 to 1.0.{versions-1}, each with dependencies, scripts and a readme,
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// and a time entry for each.
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func Packument(versions int) []byte {
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var b strings.Builder
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readme := strings.Repeat("Some documentation text. ", readmeSentences)
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b.WriteString(`{"_id":"big","name":"big","dist-tags":{"latest":"1.0.` + fmt.Sprint(versions-1) + `"},"versions":{`)
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for i := range versions {
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if i > 0 {
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b.WriteByte(',')
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}
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v := fmt.Sprintf("1.0.%d", i)
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fmt.Fprintf(&b, `%q:{"name":"big","version":%q,"description":"A big package","main":"index.js",`+
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`"scripts":{"test":"node test.js","build":"tsc -p ."},"dependencies":{`, v, v)
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for d := range 25 {
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if d > 0 {
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b.WriteByte(',')
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}
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fmt.Fprintf(&b, `"dep-%d":"^%d.0.0"`, d, d)
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}
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fmt.Fprintf(&b, `},"readme":%q,"dist":{"shasum":"0123456789abcdef0123456789abcdef01234567",`+
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`"integrity":"sha512-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==",`+
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`"tarball":"https://registry.npmjs.org/big/-/big-%s.tgz"}}`, readme, v)
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}
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b.WriteString(`},"time":{"created":"2015-01-01T00:00:00.000Z"`)
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for i := range versions {
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fmt.Fprintf(&b, `,"1.0.%d":"2016-01-01T00:00:00.000Z"`, i)
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}
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b.WriteString(`}}`)
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return []byte(b.String())
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}
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