76 lines
2.1 KiB
Go
76 lines
2.1 KiB
Go
package channeldb
|
|
|
|
import "github.com/lightningnetwork/lnd/clock"
|
|
|
|
const (
|
|
// DefaultRejectCacheSize is the default number of rejectCacheEntries to
|
|
// cache for use in the rejection cache of incoming gossip traffic. This
|
|
// produces a cache size of around 1MB.
|
|
DefaultRejectCacheSize = 50000
|
|
|
|
// DefaultChannelCacheSize is the default number of ChannelEdges cached
|
|
// in order to reply to gossip queries. This produces a cache size of
|
|
// around 40MB.
|
|
DefaultChannelCacheSize = 20000
|
|
)
|
|
|
|
// Options holds parameters for tuning and customizing a channeldb.DB.
|
|
type Options struct {
|
|
// RejectCacheSize is the maximum number of rejectCacheEntries to hold
|
|
// in the rejection cache.
|
|
RejectCacheSize int
|
|
|
|
// ChannelCacheSize is the maximum number of ChannelEdges to hold in the
|
|
// channel cache.
|
|
ChannelCacheSize int
|
|
|
|
// NoFreelistSync, if true, prevents the database from syncing its
|
|
// freelist to disk, resulting in improved performance at the expense of
|
|
// increased startup time.
|
|
NoFreelistSync bool
|
|
|
|
// clock is the time source used by the database.
|
|
clock clock.Clock
|
|
}
|
|
|
|
// DefaultOptions returns an Options populated with default values.
|
|
func DefaultOptions() Options {
|
|
return Options{
|
|
RejectCacheSize: DefaultRejectCacheSize,
|
|
ChannelCacheSize: DefaultChannelCacheSize,
|
|
NoFreelistSync: true,
|
|
clock: clock.NewDefaultClock(),
|
|
}
|
|
}
|
|
|
|
// OptionModifier is a function signature for modifying the default Options.
|
|
type OptionModifier func(*Options)
|
|
|
|
// OptionSetRejectCacheSize sets the RejectCacheSize to n.
|
|
func OptionSetRejectCacheSize(n int) OptionModifier {
|
|
return func(o *Options) {
|
|
o.RejectCacheSize = n
|
|
}
|
|
}
|
|
|
|
// OptionSetChannelCacheSize sets the ChannelCacheSize to n.
|
|
func OptionSetChannelCacheSize(n int) OptionModifier {
|
|
return func(o *Options) {
|
|
o.ChannelCacheSize = n
|
|
}
|
|
}
|
|
|
|
// OptionSetSyncFreelist allows the database to sync its freelist.
|
|
func OptionSetSyncFreelist(b bool) OptionModifier {
|
|
return func(o *Options) {
|
|
o.NoFreelistSync = !b
|
|
}
|
|
}
|
|
|
|
// OptionClock sets a non-default clock dependency.
|
|
func OptionClock(clock clock.Clock) OptionModifier {
|
|
return func(o *Options) {
|
|
o.clock = clock
|
|
}
|
|
}
|