108 lines
2.9 KiB
Go
108 lines
2.9 KiB
Go
// Copyright (C) 2018 Storj Labs, Inc.
|
|
// See LICENSE for copying information.
|
|
|
|
package kademlia
|
|
|
|
import (
|
|
"context"
|
|
"flag"
|
|
|
|
"github.com/zeebo/errs"
|
|
"go.uber.org/zap"
|
|
monkit "gopkg.in/spacemonkeygo/monkit.v2"
|
|
|
|
"storj.io/storj/pkg/node"
|
|
"storj.io/storj/pkg/pb"
|
|
"storj.io/storj/pkg/provider"
|
|
"storj.io/storj/pkg/utils"
|
|
)
|
|
|
|
var (
|
|
// Error defines a Kademlia error
|
|
Error = errs.Class("kademlia error")
|
|
mon = monkit.Package()
|
|
)
|
|
|
|
const (
|
|
defaultAlpha = 5
|
|
)
|
|
|
|
var (
|
|
// TODO: replace these with constants after tuning
|
|
flagBucketSize = flag.Int("kademlia-bucket-size", 20, "Size of each Kademlia bucket")
|
|
flagReplacementCacheSize = flag.Int("kademlia-replacement-cache-size", 5, "Size of Kademlia replacement cache")
|
|
)
|
|
|
|
//CtxKey Used as kademlia key
|
|
type CtxKey int
|
|
|
|
const (
|
|
ctxKeyKad CtxKey = iota
|
|
)
|
|
|
|
// FarmerConfig defines properties related to farmer metadata
|
|
type FarmerConfig struct {
|
|
Email string `help:"Farmer email address" default:""`
|
|
Wallet string `help:"Farmer wallet adress" default:""`
|
|
}
|
|
|
|
// Config defines all of the things that are needed to start up Kademlia
|
|
// server endpoints (and not necessarily client code).
|
|
type Config struct {
|
|
BootstrapAddr string `help:"the kademlia node to bootstrap against" default:"bootstrap-dev.storj.io:8080"`
|
|
DBPath string `help:"the path for our db services to be created on" default:"$CONFDIR/kademlia"`
|
|
Alpha int `help:"alpha is a system wide concurrency parameter." default:"5"`
|
|
SelfAddr string `help:"the public address of the kademlia node; defaults to the gRPC server address." default:""`
|
|
Farmer FarmerConfig
|
|
}
|
|
|
|
// Run implements provider.Responsibility
|
|
func (c Config) Run(ctx context.Context, server *provider.Provider) (
|
|
err error) {
|
|
|
|
defer mon.Task()(&ctx)(&err)
|
|
|
|
// TODO(coyle): I'm thinking we just remove this function and grab from the config.
|
|
in, err := GetIntroNode(c.BootstrapAddr)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
metadata := &pb.NodeMetadata{
|
|
Email: c.Farmer.Email,
|
|
Wallet: c.Farmer.Wallet,
|
|
}
|
|
|
|
nodeType := pb.NodeType_STORAGE // TODO: fix this for satellites
|
|
|
|
addr := server.Addr().String()
|
|
if c.SelfAddr != "" {
|
|
addr = c.SelfAddr
|
|
}
|
|
|
|
kad, err := NewKademlia(server.Identity().ID, nodeType, []pb.Node{*in}, addr, metadata, server.Identity(), c.DBPath, c.Alpha)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer func() { err = utils.CombineErrors(err, kad.Disconnect()) }()
|
|
|
|
pb.RegisterNodesServer(server.GRPC(), node.NewServer(kad))
|
|
|
|
go func() {
|
|
if err = kad.Bootstrap(ctx); err != nil {
|
|
zap.L().Error("Failed to bootstrap Kademlia", zap.String("ID", server.Identity().ID.String()))
|
|
}
|
|
}()
|
|
|
|
return server.Run(context.WithValue(ctx, ctxKeyKad, kad))
|
|
}
|
|
|
|
// LoadFromContext loads an existing Kademlia from the Provider context
|
|
// stack if one exists.
|
|
func LoadFromContext(ctx context.Context) *Kademlia {
|
|
if v, ok := ctx.Value(ctxKeyKad).(*Kademlia); ok {
|
|
return v
|
|
}
|
|
return nil
|
|
}
|