storj/pkg/kademlia/kademlia.go

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// Copyright (C) 2018 Storj Labs, Inc.
// See LICENSE for copying information.
package kademlia
import (
"context"
"time"
"storj.io/storj/protos/overlay"
)
// NodeID is the unique identifer for a node on the network
type NodeID string
// DHT is the interface for the DHT in the Storj network
type DHT interface {
GetNodes(ctx context.Context, start string, limit int) ([]overlay.Node, error)
GetRoutingTable(ctx context.Context) (RoutingTable, error)
Bootstrap(ctx context.Context) error
Ping(ctx context.Context, node overlay.Node) (overlay.Node, error)
FindNode(ctx context.Context, ID NodeID) (overlay.Node, error)
}
// RoutingTable contains information on nodes we have locally
type RoutingTable interface {
// local params
LocalID() NodeID
K() int
CacheSize() int
GetBucket(id string) (bucket Bucket, ok bool)
GetBuckets() ([]*Bucket, error)
FindNear(id NodeID, limit int) ([]overlay.Node, error)
ConnectionSuccess(id string, address overlay.NodeAddress)
ConnectionFailed(id string, address overlay.NodeAddress)
// these are for refreshing
SetBucketTimestamp(id string, now time.Time) error
GetBucketTimestamp(id string, bucket Bucket) (time.Time, error)
}
// Bucket is a set of methods to act on kademlia k buckets
type Bucket interface {
Routing() []overlay.Node
Cache() []overlay.Node
Midpoint() string
}