Moved to google.golang.org/genproto/googleapis/api/annotations

Fixes #52

vendor/github.com/kr/logfmt/example_test.go

@@ -0,0 +1,59 @@
+package logfmt_test
+
+import (
+	"bytes"
+	"fmt"
+	"github.com/kr/logfmt"
+	"log"
+	"strconv"
+)
+
+type Measurement struct {
+	Key  string
+	Val  float64
+	Unit string // (e.g. ms, MB, etc)
+}
+
+type Measurements []*Measurement
+
+var measurePrefix = []byte("measure.")
+
+func (mm *Measurements) HandleLogfmt(key, val []byte) error {
+	if !bytes.HasPrefix(key, measurePrefix) {
+		return nil
+	}
+	i := bytes.LastIndexFunc(val, isDigit)
+	v, err := strconv.ParseFloat(string(val[:i+1]), 10)
+	if err != nil {
+		return err
+	}
+	m := &Measurement{
+		Key:  string(key[len(measurePrefix):]),
+		Val:  v,
+		Unit: string(val[i+1:]),
+	}
+	*mm = append(*mm, m)
+	return nil
+}
+
+// return true if r is an ASCII digit only, as opposed to unicode.IsDigit.
+func isDigit(r rune) bool {
+	return '0' <= r && r <= '9'
+}
+
+func Example_customHandler() {
+	var data = []byte("measure.a=1ms measure.b=10 measure.c=100MB measure.d=1s garbage")
+
+	mm := make(Measurements, 0)
+	if err := logfmt.Unmarshal(data, &mm); err != nil {
+		log.Fatalf("err=%q", err)
+	}
+	for _, m := range mm {
+		fmt.Printf("%v\n", *m)
+	}
+	// Output:
+	// {a 1 ms}
+	// {b 10 }
+	// {c 100 MB}
+	// {d 1 s}
+}