go: infra/libs/* now live in luci-go.

go/src/infra/libs/logging/memlogger/memory.go

-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-package memlogger
-
-import (
-        "fmt"
-
-        "golang.org/x/net/context"
-
-        "infra/libs/logging"
-)
-
-// LogLevel indicates the severity of a LogEntry.
-type LogLevel uint
-
-// 4 different log levels. These are automatically recorded in LogEntry by the
-// various MemLogger.* methods.
-const (
-        LogError LogLevel = iota
-        LogWarn
-        LogInfo
-)
-
-func (l LogLevel) String() string {
-        switch l {
-        case LogError:
-                return "ERR"
-        case LogWarn:
-                return "WRN"
-        case LogInfo:
-                return "IFO"
-        default:
-                return "???"
-        }
-}
-
-// LogEntry is a single entry in a MemLogger, containing a message and a
-// severity.
-type LogEntry struct {
-        Level LogLevel
-        Msg   string
-}
-
-// MemLogger is an implementation of Logger.
-type MemLogger []LogEntry
-
-// Infof adds a new LogEntry at the LogInfo level
-func (m *MemLogger) Infof(format string, args ...interface{}) {
-        *m = append(*m, LogEntry{LogInfo, fmt.Sprintf(format, args...)})
-}
-
-// Warningf adds a new LogEntry at the LogWarn level
-func (m *MemLogger) Warningf(format string, args ...interface{}) {
-        *m = append(*m, LogEntry{LogWarn, fmt.Sprintf(format, args...)})
-}
-
-// Errorf adds a new LogEntry at the LogError level
-func (m *MemLogger) Errorf(format string, args ...interface{}) {
-        *m = append(*m, LogEntry{LogError, fmt.Sprintf(format, args...)})
-}
-
-// Use adds a memory backed Logger to Context, with concrete type
-// *MemLogger. Casting to the concrete type can be used to inspect the
-// log output after running a test case, for example.
-func Use(c context.Context) context.Context {
-        ml := &MemLogger{}
-        return logging.Set(c, func(ic context.Context) logging.Logger {
-                return ml
-        })
-}