etcd

type CacheFileFn func(namespace string) string

type Options interface {
	// RequestTimeout is the timeout for etcd requests
	RequestTimeout() time.Duration
	// SetRequestTimeout sets the RequestTimeout
	SetRequestTimeout(t time.Duration) Options

	// InstrumentsOptions is the instrument options
	InstrumentsOptions() instrument.Options
	// SetInstrumentsOptions sets the InstrumentsOptions
	SetInstrumentsOptions(iopts instrument.Options) Options

	// RetryOptions is the retry options
	RetryOptions() retry.Options
	// SetRetryOptions sets the RetryOptions
	SetRetryOptions(ropts retry.Options) Options

	// WatchChanCheckInterval will be used to periodically check if a watch chan
	// is no longer being subscribed and should be closed
	WatchChanCheckInterval() time.Duration
	// SetWatchChanCheckInterval sets the WatchChanCheckInterval
	SetWatchChanCheckInterval(t time.Duration) Options

	// WatchChanResetInterval is the delay before resetting the etcd watch chan
	WatchChanResetInterval() time.Duration
	// SetWatchChanResetInterval sets the WatchChanResetInterval
	SetWatchChanResetInterval(t time.Duration) Options

	// WatchChanInitTimeout is the timeout for a watchChan initialization
	WatchChanInitTimeout() time.Duration
	// SetWatchChanInitTimeout sets the WatchChanInitTimeout
	SetWatchChanInitTimeout(t time.Duration) Options

	// WatchWithRevision is the revision that watch requests will start from.
	WatchWithRevision() int64

	// SetWatchWithRevision sets the revision that watch requests will start
	// from.
	SetWatchWithRevision(rev int64) Options

	// Prefix is the prefix for each key
	Prefix() string
	// SetPrefix sets the prefix
	SetPrefix(s string) Options
	// ApplyPrefix applies the prefix to the key
	ApplyPrefix(key string) string

	// CacheFileDir is the dir for cache.
	CacheFileFn() CacheFileFn
	// SetCacheFileDir sets the CacheFileDir
	SetCacheFileFn(fn CacheFileFn) Options

	// Validate validates the Options
	Validate() error
}