46 lines
1.3 KiB
Go
46 lines
1.3 KiB
Go
// Copyright (C) 2015 The Syncthing Authors.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this file,
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// You can obtain one at https://mozilla.org/MPL/2.0/.
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package discover
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import (
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"context"
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"time"
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"github.com/syncthing/syncthing/lib/protocol"
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"github.com/thejerf/suture/v4"
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)
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// A Finder provides lookup services of some kind.
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type Finder interface {
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Lookup(ctx context.Context, deviceID protocol.DeviceID) (address []string, err error)
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Error() error
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String() string
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Cache() map[protocol.DeviceID]CacheEntry
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}
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type CacheEntry struct {
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Addresses []string `json:"addresses"`
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when time.Time // When did we get the result
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found bool // Is it a success (cacheTime applies) or a failure (negCacheTime applies)?
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validUntil time.Time // Validity time, overrides normal calculation
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instanceID int64 // for local discovery, the instance ID (random on each restart)
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}
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// A FinderService is a Finder that has background activity and must be run as
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// a suture.Service.
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type FinderService interface {
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Finder
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suture.Service
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}
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// The AddressLister answers questions about what addresses we are listening
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// on.
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type AddressLister interface {
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ExternalAddresses() []string
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AllAddresses() []string
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}
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