woodpecker/cncd/logging/logging.go
2019-04-06 15:44:04 +02:00

80 lines
2 KiB
Go

package logging
import (
"context"
"errors"
"io"
)
// ErrNotFound is returned when the log does not exist.
var ErrNotFound = errors.New("stream: not found")
// Entry defines a log entry.
type Entry struct {
// ID identifies this message.
ID string `json:"id,omitempty"`
// Data is the actual data in the entry.
Data []byte `json:"data"`
// Tags represents the key-value pairs the
// entry is tagged with.
Tags map[string]string `json:"tags,omitempty"`
}
// Handler defines a callback function for handling log entries.
type Handler func(...*Entry)
// Log defines a log multiplexer.
type Log interface {
// Open opens the log.
Open(c context.Context, path string) error
// Write writes the entry to the log.
Write(c context.Context, path string, entry *Entry) error
// Tail tails the log.
Tail(c context.Context, path string, handler Handler) error
// Close closes the log.
Close(c context.Context, path string) error
// Snapshot snapshots the stream to Writer w.
Snapshot(c context.Context, path string, w io.Writer) error
// Info returns runtime information about the multiplexer.
// Info(c context.Context) (interface{}, error)
}
// // global streamer
// var global = New()
//
// // Set sets a default global logger.
// func Set(log Log) {
// global = log
// }
//
// // Open opens the log stream.
// func Open(c context.Context, path string) error {
// return global.Open(c, path)
// }
//
// // Write writes the log entry to the stream.
// func Write(c context.Context, path string, entry *Entry) error {
// return global.Write(c, path, entry)
// }
//
// // Tail tails the log stream.
// func Tail(c context.Context, path string, handler Handler) error {
// return global.Tail(c, path, handler)
// }
//
// // Close closes the log stream.
// func Close(c context.Context, path string) error {
// return global.Close(c, path)
// }
//
// // Snapshot snapshots the stream to Writer w.
// func Snapshot(c context.Context, path string, w io.Writer) error {
// return global.Snapshot(c, path, w)
// }