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v2fly/app/log/log.go
2018-02-08 15:39:46 +01:00

120 lines
2.5 KiB
Go

package log
//go:generate go run $GOPATH/src/v2ray.com/core/common/errors/errorgen/main.go -pkg log -path App,Log
import (
"context"
"sync"
"v2ray.com/core/common"
"v2ray.com/core/common/log"
)
// Instance is an app.Application that handles logs.
type Instance struct {
sync.RWMutex
config *Config
accessLogger log.Handler
errorLogger log.Handler
active bool
}
// New creates a new log.Instance based on the given config.
func New(ctx context.Context, config *Config) (*Instance, error) {
g := &Instance{
config: config,
active: true,
}
if err := g.initAccessLogger(); err != nil {
return nil, newError("failed to initialize access logger").Base(err).AtWarning()
}
if err := g.initErrorLogger(); err != nil {
return nil, newError("failed to initialize error logger").Base(err).AtWarning()
}
log.RegisterHandler(g)
return g, nil
}
func (g *Instance) initAccessLogger() error {
switch g.config.AccessLogType {
case LogType_File:
creator, err := log.CreateFileLogWriter(g.config.AccessLogPath)
if err != nil {
return err
}
g.accessLogger = log.NewLogger(creator)
case LogType_Console:
g.accessLogger = log.NewLogger(log.CreateStdoutLogWriter())
default:
}
return nil
}
func (g *Instance) initErrorLogger() error {
switch g.config.ErrorLogType {
case LogType_File:
creator, err := log.CreateFileLogWriter(g.config.ErrorLogPath)
if err != nil {
return err
}
g.errorLogger = log.NewLogger(creator)
case LogType_Console:
g.errorLogger = log.NewLogger(log.CreateStdoutLogWriter())
default:
}
return nil
}
// Start implements app.Application.Start().
func (g *Instance) Start() error {
g.Lock()
defer g.Unlock()
g.active = true
return nil
}
func (g *Instance) isActive() bool {
g.RLock()
defer g.RUnlock()
return g.active
}
// Handle implements log.Handler.
func (g *Instance) Handle(msg log.Message) {
if !g.isActive() {
return
}
switch msg := msg.(type) {
case *log.AccessMessage:
if g.accessLogger != nil {
g.accessLogger.Handle(msg)
}
case *log.GeneralMessage:
if g.errorLogger != nil && msg.Severity <= g.config.ErrorLogLevel {
g.errorLogger.Handle(msg)
}
default:
// Swallow
}
}
// Close implement app.Application.Close().
func (g *Instance) Close() error {
g.Lock()
defer g.Unlock()
g.active = false
return nil
}
func init() {
common.Must(common.RegisterConfig((*Config)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
return New(ctx, config.(*Config))
}))
}