storj/pkg/node/node.go

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// Copyright (C) 2018 Storj Labs, Inc.
// See LICENSE for copying information
package node
import (
"context"
"google.golang.org/grpc"
"storj.io/storj/pkg/pool"
"storj.io/storj/pkg/transport"
proto "storj.io/storj/protos/overlay"
)
// Node is the storj definition for a node in the network
type Node struct {
self proto.Node
tc transport.Client
cache pool.Pool
}
// Lookup queries nodes looking for a particular node in the network
func (n *Node) Lookup(ctx context.Context, to proto.Node, find proto.Node) ([]*proto.Node, error) {
v, err := n.cache.Get(ctx, to.GetId())
if err != nil {
return nil, err
}
var conn *grpc.ClientConn
if c, ok := v.(*grpc.ClientConn); ok {
conn = c
} else {
c, err := n.tc.DialNode(ctx, &to)
if err != nil {
return nil, err
}
conn = c
}
c := proto.NewNodesClient(conn)
resp, err := c.Query(ctx, &proto.QueryRequest{Sender: &n.self, Target: &find})
if err != nil {
return nil, err
}
return resp.Response, nil
}