Initial QSfera import

Server/vendor/go-micro.dev/v4/debug/log/log.go

@@ -0,0 +1,58 @@
+// Package log provides debug logging
+package log
+
+import (
+	"encoding/json"
+	"fmt"
+	"time"
+)
+
+var (
+	// Default buffer size if any.
+	DefaultSize = 1024
+	// DefaultLog logger.
+	DefaultLog = NewLog()
+	// Default formatter.
+	DefaultFormat = TextFormat
+)
+
+// Log is debug log interface for reading and writing logs.
+type Log interface {
+	// Read reads log entries from the logger
+	Read(...ReadOption) ([]Record, error)
+	// Write writes records to log
+	Write(Record) error
+	// Stream log records
+	Stream() (Stream, error)
+}
+
+// Record is log record entry.
+type Record struct {
+	// Timestamp of logged event
+	Timestamp time.Time `json:"timestamp"`
+	// Metadata to enrich log record
+	Metadata map[string]string `json:"metadata"`
+	// Value contains log entry
+	Message interface{} `json:"message"`
+}
+
+// Stream returns a log stream.
+type Stream interface {
+	Chan() <-chan Record
+	Stop() error
+}
+
+// Format is a function which formats the output.
+type FormatFunc func(Record) string
+
+// TextFormat returns text format.
+func TextFormat(r Record) string {
+	t := r.Timestamp.Format("2006-01-02 15:04:05")
+	return fmt.Sprintf("%s %v", t, r.Message)
+}
+
+// JSONFormat is a json Format func.
+func JSONFormat(r Record) string {
+	b, _ := json.Marshal(r)
+	return string(b)
+}