syncthing/lib/discover/discover.go
2018-08-13 20:39:08 +02:00

50 lines
1.3 KiB
Go

// Copyright (C) 2015 The Syncthing Authors.
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
// You can obtain one at https://mozilla.org/MPL/2.0/.
package discover
import (
"time"
"github.com/calmh/suture"
"github.com/syncthing/syncthing/lib/protocol"
)
// A Finder provides lookup services of some kind.
type Finder interface {
Lookup(deviceID protocol.DeviceID) (address []string, err error)
Error() error
String() string
Cache() map[protocol.DeviceID]CacheEntry
}
type CacheEntry struct {
Addresses []string `json:"addresses"`
when time.Time // When did we get the result
found bool // Is it a success (cacheTime applies) or a failure (negCacheTime applies)?
validUntil time.Time // Validity time, overrides normal calculation
instanceID int64 // for local discovery, the instance ID (random on each restart)
}
// A FinderService is a Finder that has background activity and must be run as
// a suture.Service.
type FinderService interface {
Finder
suture.Service
}
type FinderMux interface {
Finder
ChildStatus() map[string]error
}
// The AddressLister answers questions about what addresses we are listening
// on.
type AddressLister interface {
ExternalAddresses() []string
AllAddresses() []string
}