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go-micro/debug/log/default.go

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package log
import (
"fmt"
golog "log"
"github.com/micro/go-micro/debug/buffer"
)
var (
// DefaultSize of the logger buffer
DefaultSize = 1000
)
// defaultLog is default micro log
type defaultLog struct {
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*buffer.Buffer
}
// NewLog returns default Logger with
func NewLog(opts ...Option) Log {
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// get default options
options := DefaultOptions()
// apply requested options
for _, o := range opts {
o(&options)
}
return &defaultLog{
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Buffer: buffer.New(options.Size),
}
}
// Write writes log into logger
func (l *defaultLog) Write(v ...interface{}) {
l.Buffer.Put(fmt.Sprint(v...))
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golog.Print(v...)
}
// Read reads logs from the logger
func (l *defaultLog) Read(opts ...ReadOption) []Record {
options := ReadOptions{}
// initialize the read options
for _, o := range opts {
o(&options)
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}
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var entries []*buffer.Entry
// if Since options ha sbeen specified we honor it
if !options.Since.IsZero() {
entries = l.Buffer.Since(options.Since)
} else {
// otherwie return last count entries
entries = l.Buffer.Get(options.Count)
}
// TODO: if both Since and Count are set should we return
// last Count from the returned time scoped entries?
records := make([]Record, 0, len(entries))
for _, entry := range entries {
record := Record{
Timestamp: entry.Timestamp,
Value: entry.Value,
}
records = append(records, record)
}
return records
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}