345 lines
10 KiB
Go
345 lines
10 KiB
Go
// Copyright 2016 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package swarm
|
|
|
|
import (
|
|
"bytes"
|
|
"context"
|
|
"crypto/ecdsa"
|
|
"fmt"
|
|
|
|
"github.com/ethereum/go-ethereum/accounts/abi/bind"
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/contracts/chequebook"
|
|
"github.com/ethereum/go-ethereum/contracts/ens"
|
|
"github.com/ethereum/go-ethereum/crypto"
|
|
"github.com/ethereum/go-ethereum/ethclient"
|
|
"github.com/ethereum/go-ethereum/log"
|
|
"github.com/ethereum/go-ethereum/node"
|
|
"github.com/ethereum/go-ethereum/p2p"
|
|
"github.com/ethereum/go-ethereum/p2p/discover"
|
|
"github.com/ethereum/go-ethereum/rpc"
|
|
"github.com/ethereum/go-ethereum/swarm/api"
|
|
httpapi "github.com/ethereum/go-ethereum/swarm/api/http"
|
|
"github.com/ethereum/go-ethereum/swarm/fuse"
|
|
"github.com/ethereum/go-ethereum/swarm/network"
|
|
"github.com/ethereum/go-ethereum/swarm/storage"
|
|
)
|
|
|
|
// the swarm stack
|
|
type Swarm struct {
|
|
config *api.Config // swarm configuration
|
|
api *api.Api // high level api layer (fs/manifest)
|
|
dns api.Resolver // DNS registrar
|
|
dbAccess *network.DbAccess // access to local chunk db iterator and storage counter
|
|
storage storage.ChunkStore // internal access to storage, common interface to cloud storage backends
|
|
dpa *storage.DPA // distributed preimage archive, the local API to the storage with document level storage/retrieval support
|
|
depo network.StorageHandler // remote request handler, interface between bzz protocol and the storage
|
|
cloud storage.CloudStore // procurement, cloud storage backend (can multi-cloud)
|
|
hive *network.Hive // the logistic manager
|
|
backend chequebook.Backend // simple blockchain Backend
|
|
privateKey *ecdsa.PrivateKey
|
|
corsString string
|
|
swapEnabled bool
|
|
lstore *storage.LocalStore // local store, needs to store for releasing resources after node stopped
|
|
sfs *fuse.SwarmFS // need this to cleanup all the active mounts on node exit
|
|
}
|
|
|
|
type SwarmAPI struct {
|
|
Api *api.Api
|
|
Backend chequebook.Backend
|
|
PrvKey *ecdsa.PrivateKey
|
|
}
|
|
|
|
func (self *Swarm) API() *SwarmAPI {
|
|
return &SwarmAPI{
|
|
Api: self.api,
|
|
Backend: self.backend,
|
|
PrvKey: self.privateKey,
|
|
}
|
|
}
|
|
|
|
// creates a new swarm service instance
|
|
// implements node.Service
|
|
func NewSwarm(ctx *node.ServiceContext, backend chequebook.Backend, config *api.Config, swapEnabled, syncEnabled bool, cors string) (self *Swarm, err error) {
|
|
if bytes.Equal(common.FromHex(config.PublicKey), storage.ZeroKey) {
|
|
return nil, fmt.Errorf("empty public key")
|
|
}
|
|
if bytes.Equal(common.FromHex(config.BzzKey), storage.ZeroKey) {
|
|
return nil, fmt.Errorf("empty bzz key")
|
|
}
|
|
|
|
self = &Swarm{
|
|
config: config,
|
|
swapEnabled: swapEnabled,
|
|
backend: backend,
|
|
privateKey: config.Swap.PrivateKey(),
|
|
corsString: cors,
|
|
}
|
|
log.Debug(fmt.Sprintf("Setting up Swarm service components"))
|
|
|
|
hash := storage.MakeHashFunc(config.ChunkerParams.Hash)
|
|
self.lstore, err = storage.NewLocalStore(hash, config.StoreParams)
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
// setup local store
|
|
log.Debug(fmt.Sprintf("Set up local storage"))
|
|
|
|
self.dbAccess = network.NewDbAccess(self.lstore)
|
|
log.Debug(fmt.Sprintf("Set up local db access (iterator/counter)"))
|
|
|
|
// set up the kademlia hive
|
|
self.hive = network.NewHive(
|
|
common.HexToHash(self.config.BzzKey), // key to hive (kademlia base address)
|
|
config.HiveParams, // configuration parameters
|
|
swapEnabled, // SWAP enabled
|
|
syncEnabled, // syncronisation enabled
|
|
)
|
|
log.Debug(fmt.Sprintf("Set up swarm network with Kademlia hive"))
|
|
|
|
// setup cloud storage backend
|
|
cloud := network.NewForwarder(self.hive)
|
|
log.Debug(fmt.Sprintf("-> set swarm forwarder as cloud storage backend"))
|
|
// setup cloud storage internal access layer
|
|
|
|
self.storage = storage.NewNetStore(hash, self.lstore, cloud, config.StoreParams)
|
|
log.Debug(fmt.Sprintf("-> swarm net store shared access layer to Swarm Chunk Store"))
|
|
|
|
// set up Depo (storage handler = cloud storage access layer for incoming remote requests)
|
|
self.depo = network.NewDepo(hash, self.lstore, self.storage)
|
|
log.Debug(fmt.Sprintf("-> REmote Access to CHunks"))
|
|
|
|
// set up DPA, the cloud storage local access layer
|
|
dpaChunkStore := storage.NewDpaChunkStore(self.lstore, self.storage)
|
|
log.Debug(fmt.Sprintf("-> Local Access to Swarm"))
|
|
// Swarm Hash Merklised Chunking for Arbitrary-length Document/File storage
|
|
self.dpa = storage.NewDPA(dpaChunkStore, self.config.ChunkerParams)
|
|
log.Debug(fmt.Sprintf("-> Content Store API"))
|
|
|
|
// set up high level api
|
|
transactOpts := bind.NewKeyedTransactor(self.privateKey)
|
|
|
|
if backend == (*ethclient.Client)(nil) {
|
|
log.Warn("No ENS, please specify non-empty --ethapi to use domain name resolution")
|
|
} else {
|
|
self.dns, err = ens.NewENS(transactOpts, config.EnsRoot, self.backend)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
log.Debug(fmt.Sprintf("-> Swarm Domain Name Registrar @ address %v", config.EnsRoot.Hex()))
|
|
|
|
self.api = api.NewApi(self.dpa, self.dns)
|
|
// Manifests for Smart Hosting
|
|
log.Debug(fmt.Sprintf("-> Web3 virtual server API"))
|
|
|
|
self.sfs = fuse.NewSwarmFS(self.api)
|
|
log.Debug("-> Initializing Fuse file system")
|
|
|
|
return self, nil
|
|
}
|
|
|
|
/*
|
|
Start is called when the stack is started
|
|
* starts the network kademlia hive peer management
|
|
* (starts netStore level 0 api)
|
|
* starts DPA level 1 api (chunking -> store/retrieve requests)
|
|
* (starts level 2 api)
|
|
* starts http proxy server
|
|
* registers url scheme handlers for bzz, etc
|
|
* TODO: start subservices like sword, swear, swarmdns
|
|
*/
|
|
// implements the node.Service interface
|
|
func (self *Swarm) Start(net *p2p.Server) error {
|
|
connectPeer := func(url string) error {
|
|
node, err := discover.ParseNode(url)
|
|
if err != nil {
|
|
return fmt.Errorf("invalid node URL: %v", err)
|
|
}
|
|
net.AddPeer(node)
|
|
return nil
|
|
}
|
|
// set chequebook
|
|
if self.swapEnabled {
|
|
ctx := context.Background() // The initial setup has no deadline.
|
|
err := self.SetChequebook(ctx)
|
|
if err != nil {
|
|
return fmt.Errorf("Unable to set chequebook for SWAP: %v", err)
|
|
}
|
|
log.Debug(fmt.Sprintf("-> cheque book for SWAP: %v", self.config.Swap.Chequebook()))
|
|
} else {
|
|
log.Debug(fmt.Sprintf("SWAP disabled: no cheque book set"))
|
|
}
|
|
|
|
log.Warn(fmt.Sprintf("Starting Swarm service"))
|
|
self.hive.Start(
|
|
discover.PubkeyID(&net.PrivateKey.PublicKey),
|
|
func() string { return net.ListenAddr },
|
|
connectPeer,
|
|
)
|
|
log.Info(fmt.Sprintf("Swarm network started on bzz address: %v", self.hive.Addr()))
|
|
|
|
self.dpa.Start()
|
|
log.Debug(fmt.Sprintf("Swarm DPA started"))
|
|
|
|
// start swarm http proxy server
|
|
if self.config.Port != "" {
|
|
addr := ":" + self.config.Port
|
|
go httpapi.StartHttpServer(self.api, &httpapi.ServerConfig{
|
|
Addr: addr,
|
|
CorsString: self.corsString,
|
|
})
|
|
}
|
|
|
|
log.Debug(fmt.Sprintf("Swarm http proxy started on port: %v", self.config.Port))
|
|
|
|
if self.corsString != "" {
|
|
log.Debug(fmt.Sprintf("Swarm http proxy started with corsdomain: %v", self.corsString))
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// implements the node.Service interface
|
|
// stops all component services.
|
|
func (self *Swarm) Stop() error {
|
|
self.dpa.Stop()
|
|
self.hive.Stop()
|
|
if ch := self.config.Swap.Chequebook(); ch != nil {
|
|
ch.Stop()
|
|
ch.Save()
|
|
}
|
|
|
|
if self.lstore != nil {
|
|
self.lstore.DbStore.Close()
|
|
}
|
|
self.sfs.Stop()
|
|
return self.config.Save()
|
|
}
|
|
|
|
// implements the node.Service interface
|
|
func (self *Swarm) Protocols() []p2p.Protocol {
|
|
proto, err := network.Bzz(self.depo, self.backend, self.hive, self.dbAccess, self.config.Swap, self.config.SyncParams, self.config.NetworkId)
|
|
if err != nil {
|
|
return nil
|
|
}
|
|
return []p2p.Protocol{proto}
|
|
}
|
|
|
|
// implements node.Service
|
|
// Apis returns the RPC Api descriptors the Swarm implementation offers
|
|
func (self *Swarm) APIs() []rpc.API {
|
|
return []rpc.API{
|
|
// public APIs
|
|
{
|
|
Namespace: "bzz",
|
|
Version: "0.1",
|
|
Service: &Info{self.config, chequebook.ContractParams},
|
|
Public: true,
|
|
},
|
|
// admin APIs
|
|
{
|
|
Namespace: "bzz",
|
|
Version: "0.1",
|
|
Service: api.NewControl(self.api, self.hive),
|
|
Public: false,
|
|
},
|
|
{
|
|
Namespace: "chequebook",
|
|
Version: chequebook.Version,
|
|
Service: chequebook.NewApi(self.config.Swap.Chequebook),
|
|
Public: false,
|
|
},
|
|
{
|
|
Namespace: "swarmfs",
|
|
Version: fuse.Swarmfs_Version,
|
|
Service: self.sfs,
|
|
Public: false,
|
|
},
|
|
// storage APIs
|
|
// DEPRECATED: Use the HTTP API instead
|
|
{
|
|
Namespace: "bzz",
|
|
Version: "0.1",
|
|
Service: api.NewStorage(self.api),
|
|
Public: true,
|
|
},
|
|
{
|
|
Namespace: "bzz",
|
|
Version: "0.1",
|
|
Service: api.NewFileSystem(self.api),
|
|
Public: false,
|
|
},
|
|
// {Namespace, Version, api.NewAdmin(self), false},
|
|
}
|
|
}
|
|
|
|
func (self *Swarm) Api() *api.Api {
|
|
return self.api
|
|
}
|
|
|
|
// SetChequebook ensures that the local checquebook is set up on chain.
|
|
func (self *Swarm) SetChequebook(ctx context.Context) error {
|
|
err := self.config.Swap.SetChequebook(ctx, self.backend, self.config.Path)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
log.Info(fmt.Sprintf("new chequebook set (%v): saving config file, resetting all connections in the hive", self.config.Swap.Contract.Hex()))
|
|
self.config.Save()
|
|
self.hive.DropAll()
|
|
return nil
|
|
}
|
|
|
|
// Local swarm without netStore
|
|
func NewLocalSwarm(datadir, port string) (self *Swarm, err error) {
|
|
|
|
prvKey, err := crypto.GenerateKey()
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
config, err := api.NewConfig(datadir, common.Address{}, prvKey, network.NetworkId)
|
|
if err != nil {
|
|
return
|
|
}
|
|
config.Port = port
|
|
|
|
dpa, err := storage.NewLocalDPA(datadir)
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
self = &Swarm{
|
|
api: api.NewApi(dpa, nil),
|
|
config: config,
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
// serialisable info about swarm
|
|
type Info struct {
|
|
*api.Config
|
|
*chequebook.Params
|
|
}
|
|
|
|
func (self *Info) Info() *Info {
|
|
return self
|
|
}
|