mirror of
https://github.com/octoleo/syncthing.git
synced 2024-11-10 07:11:08 +00:00
69 lines
1.5 KiB
Go
69 lines
1.5 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 (
|
|
stdsync "sync"
|
|
"time"
|
|
|
|
"github.com/thejerf/suture/v4"
|
|
|
|
"github.com/syncthing/syncthing/lib/protocol"
|
|
)
|
|
|
|
// A cachedFinder is a Finder with associated cache timeouts.
|
|
type cachedFinder struct {
|
|
Finder
|
|
cacheTime time.Duration
|
|
negCacheTime time.Duration
|
|
cache *cache
|
|
token *suture.ServiceToken
|
|
}
|
|
|
|
// An error may implement cachedError, in which case it will be interrogated
|
|
// to see how long we should cache the error. This overrides the default
|
|
// negative cache time.
|
|
type cachedError interface {
|
|
CacheFor() time.Duration
|
|
}
|
|
|
|
// A cache can be embedded wherever useful
|
|
|
|
type cache struct {
|
|
entries map[protocol.DeviceID]CacheEntry
|
|
mut stdsync.Mutex
|
|
}
|
|
|
|
func newCache() *cache {
|
|
return &cache{
|
|
entries: make(map[protocol.DeviceID]CacheEntry),
|
|
}
|
|
}
|
|
|
|
func (c *cache) Set(id protocol.DeviceID, ce CacheEntry) {
|
|
c.mut.Lock()
|
|
c.entries[id] = ce
|
|
c.mut.Unlock()
|
|
}
|
|
|
|
func (c *cache) Get(id protocol.DeviceID) (CacheEntry, bool) {
|
|
c.mut.Lock()
|
|
ce, ok := c.entries[id]
|
|
c.mut.Unlock()
|
|
return ce, ok
|
|
}
|
|
|
|
func (c *cache) Cache() map[protocol.DeviceID]CacheEntry {
|
|
c.mut.Lock()
|
|
m := make(map[protocol.DeviceID]CacheEntry, len(c.entries))
|
|
for k, v := range c.entries {
|
|
m[k] = v
|
|
}
|
|
c.mut.Unlock()
|
|
return m
|
|
}
|