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80 lines
1.9 KiB
Go
80 lines
1.9 KiB
Go
package logging
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import (
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"bytes"
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"fmt"
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"strconv"
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"time"
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"github.com/sirupsen/logrus"
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)
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var clfFields = [...]string{
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"request-id", "remote-address", "name", "user-id", "time", "duration", "method", "path", "protocol", "status", "size",
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}
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// CommonLogFormat implements the logrus.Formatter interface it writes logrus
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// entries using a CLF format prepended by the request-id.
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type CommonLogFormat struct{}
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// Format implements the logrus.Formatter interface. It returns the given
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// logrus entry as a CLF line with the following format:
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//
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// <request-id> <remote-address> <name> <user-id> <time> <duration> "<method> <path> <protocol>" <status> <size>
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//
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// If a field is not known, the hyphen symbol (-) will be used.
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func (f *CommonLogFormat) Format(entry *logrus.Entry) ([]byte, error) {
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data := make([]string, len(clfFields))
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for i, name := range clfFields {
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if v, ok := entry.Data[name]; ok {
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switch v := v.(type) {
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case error:
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data[i] = v.Error()
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case string:
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if v == "" {
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data[i] = "-"
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} else {
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data[i] = v
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}
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case time.Time:
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data[i] = v.Format(time.RFC3339)
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case time.Duration:
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data[i] = strconv.FormatInt(int64(v/time.Millisecond), 10)
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case int:
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data[i] = strconv.FormatInt(int64(v), 10)
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case int64:
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data[i] = strconv.FormatInt(v, 10)
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default:
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data[i] = fmt.Sprintf("%v", v)
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}
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} else {
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data[i] = "-"
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}
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}
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var buf bytes.Buffer
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buf.WriteString(data[0])
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buf.WriteByte(' ')
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buf.WriteString(data[1])
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buf.WriteByte(' ')
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buf.WriteString(data[2])
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buf.WriteByte(' ')
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buf.WriteString(data[3])
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buf.WriteByte(' ')
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buf.WriteString(data[4])
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buf.WriteByte(' ')
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buf.WriteString(data[5])
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buf.WriteString(" \"")
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buf.WriteString(data[6])
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buf.WriteByte(' ')
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buf.WriteString(data[7])
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buf.WriteByte(' ')
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buf.WriteString(data[8])
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buf.WriteString("\" ")
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buf.WriteString(data[9])
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buf.WriteByte(' ')
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buf.WriteString(data[10])
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buf.WriteByte('\n')
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return buf.Bytes(), nil
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}
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