storj/pkg/overlay/overlay.go
Dylan Lott 325a70d514 Cache (#67)
* add reference to dht to overlay client struct

* wip

* wip

* Implement FindNode

* get nodes

* WIP

* Merge in Dennis kademlia code, get it working with our code

* ping and moar

* WIP trying to get cache working with kademlia

* WIP more wiring up

* WIP

* Update service cli commands

* WIP

* added GetNodes

* added nodes to Kbucket

* default transport changed to TCP

* GetBuckets interface changed

* filling in more routing

* timestamp methods

* removed store

* Added initial network overlay explorer page

* Updating and building with dockerfile

* Working on adding bootstrap node code

* WIP merging in dennis' code

* WIP

* connects cache to pkg/kademlia implementation

* WIP redis cache

* testing

* Add bootstrap network function for CLI usage

* cleanup

* call bootstrap on init network

* Add BootstrapNetwork function to interface

* Merge in dennis kad code

* WIP updates to redis/overlay client interface

* WIP trying to get the DHT connected to the cache

* go mod & test

* deps

* Bootstrap node now setting up correctly

- Need to pass it through CLI commands better

* WIP adding refresh and walk functions, added cli flags

- added cli flags for custom bootstrap port and ip

* PR comments addressed

* adding FindStorageNodes to overlay cache

* fix GetBucket

* using SplitHostPort

* Use JoinHostPort

* updates to findstoragenodes response and request

* WIP merge in progress, having issues with a panic

* wip

* adjustments

* update port for dht bootstrap test

* Docker

* wip

* dockerfile

* fixes

* makefile changes

* Update port in NewKademlia call

* Update local kademlia DHT config

* kubernetes yaml

* cleanup

* making tests pass

* k8s yaml

* lint issues

* Edit cli flags to allow for configurable bootstrap IP and Port args

* cleanup

* cache walking the network now

* Rough prototype of Walk function laid out

* Move walk function into bootstrap function

* Update dht.go

* changes to yaml

* goimports
2018-06-05 17:06:37 -04:00

53 lines
1.6 KiB
Go

// Copyright (C) 2018 Storj Labs, Inc.
// See LICENSE for copying information.
package overlay
import (
"context"
"go.uber.org/zap"
monkit "gopkg.in/spacemonkeygo/monkit.v2"
"storj.io/storj/pkg/kademlia"
proto "storj.io/storj/protos/overlay" // naming proto to avoid confusion with this package
"storj.io/storj/storage/redis"
)
// Overlay implements our overlay RPC service
type Overlay struct {
kad *kademlia.Kademlia
DB *redis.OverlayClient
logger *zap.Logger
metrics *monkit.Registry
}
// Lookup finds the address of a node in our overlay network
func (o *Overlay) Lookup(ctx context.Context, req *proto.LookupRequest) (*proto.LookupResponse, error) {
na, err := o.DB.Get(ctx, req.NodeID)
if err != nil {
o.logger.Error("Error looking up node", zap.Error(err), zap.String("nodeID", req.NodeID))
return nil, err
}
return &proto.LookupResponse{
NodeAddress: na,
}, nil
}
// FindStorageNodes searches the overlay network for nodes that meet the provided requirements
func (o *Overlay) FindStorageNodes(ctx context.Context, req *proto.FindStorageNodesRequest) (*proto.FindStorageNodesResponse, error) {
// NB: call FilterNodeReputation from node_reputation package to find nodes for storage
// TODO(coyle): need to determine if we will pull the startID and Limit from the request or just use hardcoded data
// for now just using 40 for demos and empty string which will default the Id to the kademlia node doing the lookup
nodes, err := o.kad.GetNodes(ctx, "", 40)
if err != nil {
o.logger.Error("Error getting nodes", zap.Error(err))
return nil, err
}
return &proto.FindStorageNodesResponse{
Node: nodes,
}, nil
}