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inspector.go
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/
inspector.go
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// Copyright (C) 2019 Storj Labs, Inc.
// See LICENSE for copying information.
package kademlia
import (
"context"
"storj.io/storj/pkg/identity"
"storj.io/storj/pkg/pb"
"storj.io/storj/pkg/storj"
)
// Inspector is a gRPC service for inspecting kademlia internals
type Inspector struct {
dht *Kademlia
identity *identity.FullIdentity
}
// NewInspector creates an Inspector
func NewInspector(kad *Kademlia, identity *identity.FullIdentity) *Inspector {
return &Inspector{
dht: kad,
identity: identity,
}
}
// CountNodes returns the number of nodes in the routing table
func (srv *Inspector) CountNodes(ctx context.Context, req *pb.CountNodesRequest) (_ *pb.CountNodesResponse, err error) {
defer mon.Task()(&ctx)(&err)
// TODO: this is definitely the wrong way to get this
kadNodes, err := srv.dht.FindNear(ctx, srv.identity.ID, 100000)
if err != nil {
return nil, err
}
return &pb.CountNodesResponse{
Count: int64(len(kadNodes)),
}, nil
}
// GetBuckets returns all kademlia buckets for current kademlia instance
func (srv *Inspector) GetBuckets(ctx context.Context, req *pb.GetBucketsRequest) (_ *pb.GetBucketsResponse, err error) {
defer mon.Task()(&ctx)(&err)
b, err := srv.dht.GetBucketIds(ctx)
if err != nil {
return nil, err
}
// TODO(bryanchriswhite): should use bucketID type
nodeIDs, err := storj.NodeIDsFromBytes(b.ByteSlices())
if err != nil {
return nil, err
}
return &pb.GetBucketsResponse{
Total: int64(len(b)),
// TODO(bryanchriswhite): should use bucketID type
Ids: nodeIDs,
}, nil
}
// FindNear sends back limit of near nodes
func (srv *Inspector) FindNear(ctx context.Context, req *pb.FindNearRequest) (_ *pb.FindNearResponse, err error) {
defer mon.Task()(&ctx)(&err)
start := req.Start
limit := req.Limit
nodes, err := srv.dht.FindNear(ctx, start, int(limit))
if err != nil {
return &pb.FindNearResponse{}, err
}
return &pb.FindNearResponse{
Nodes: nodes,
}, nil
}
// PingNode sends a PING RPC to the provided node ID in the Kad network.
func (srv *Inspector) PingNode(ctx context.Context, req *pb.PingNodeRequest) (_ *pb.PingNodeResponse, err error) {
defer mon.Task()(&ctx)(&err)
_, err = srv.dht.Ping(ctx, pb.Node{
Id: req.Id,
Address: &pb.NodeAddress{
Address: req.Address,
},
})
res := &pb.PingNodeResponse{Ok: err == nil}
if err != nil {
return res, Error.Wrap(err)
}
return res, nil
}
// LookupNode triggers a Kademlia lookup and returns the node the network found.
func (srv *Inspector) LookupNode(ctx context.Context, req *pb.LookupNodeRequest) (_ *pb.LookupNodeResponse, err error) {
defer mon.Task()(&ctx)(&err)
id, err := storj.NodeIDFromString(req.Id)
if err != nil {
return &pb.LookupNodeResponse{}, err
}
node, err := srv.dht.FindNode(ctx, id)
if err != nil {
return &pb.LookupNodeResponse{}, err
}
return &pb.LookupNodeResponse{
Node: &node,
}, nil
}
// DumpNodes returns all of the nodes in the routing table database.
func (srv *Inspector) DumpNodes(ctx context.Context, req *pb.DumpNodesRequest) (_ *pb.DumpNodesResponse, err error) {
defer mon.Task()(&ctx)(&err)
nodes, err := srv.dht.DumpNodes(ctx)
if err != nil {
return nil, err
}
return &pb.DumpNodesResponse{
Nodes: nodes,
}, nil
}
// NodeInfo sends a PING RPC to a node and returns its local info.
func (srv *Inspector) NodeInfo(ctx context.Context, req *pb.NodeInfoRequest) (_ *pb.NodeInfoResponse, err error) {
defer mon.Task()(&ctx)(&err)
info, err := srv.dht.FetchInfo(ctx, pb.Node{
Id: req.Id,
Address: req.Address,
})
if err != nil {
return &pb.NodeInfoResponse{}, err
}
return &pb.NodeInfoResponse{
Type: info.GetType(),
Operator: info.GetOperator(),
Capacity: info.GetCapacity(),
Version: info.GetVersion(),
}, nil
}
// GetBucketList returns the list of buckets with their routing nodes and their cached nodes
func (srv *Inspector) GetBucketList(ctx context.Context, req *pb.GetBucketListRequest) (_ *pb.GetBucketListResponse, err error) {
defer mon.Task()(&ctx)(&err)
bucketIds, err := srv.dht.GetBucketIds(ctx)
if err != nil {
return nil, err
}
buckets := make([]*pb.GetBucketListResponse_Bucket, len(bucketIds))
for i, b := range bucketIds {
bucketID := keyToBucketID(b)
routingNodes, err := srv.dht.GetNodesWithinKBucket(ctx, bucketID)
if err != nil {
return nil, err
}
cachedNodes := srv.dht.GetCachedNodesWithinKBucket(bucketID)
buckets[i] = &pb.GetBucketListResponse_Bucket{
BucketId: keyToBucketID(b),
RoutingNodes: routingNodes,
CachedNodes: cachedNodes,
}
}
return &pb.GetBucketListResponse{
Buckets: buckets,
}, nil
}