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dendrite/cmd/dendrite-demo-libp2p/p2pdendrite.go
Hilmar Gústafsson 73d2f59e30
WIP: Add libp2p-go (#956)
* Add libp2p-go

* Some tweaks, tidying up

(cherry picked from commit 1a5bb121f8121c4f68a27abbf25a9a35a1b7c63e)

* Move p2p dockerfile

(cherry picked from commit 8d3bf44ea1bf37f950034e73bcdc315afdabe79a)

* Remove containsBackwardsExtremity

* Fix some linter errors, update some libp2p packages/calls, other tidying up

* Add -port for dendrite-p2p-demo

* Use instance name as key ID

* Remove P2P demo docker stuff, no longer needed now that we have SQLite

* Remove Dockerfile-p2p too

* Remove p2p logic from dendrite-monolith-server

* Inject publicRoomsDB in publicroomsapi

Inject publicRoomsDB instead of switching on base.libP2P.
See: https://github.com/matrix-org/dendrite/pull/956/files?file-filters%5B%5D=.go#r406276914

* Fix lint warning

* Extract mDNSListener from base.go

* Extract CreateFederationClient into demo

* Create P2PDendrite from BaseDendrite

Extract logic specific to P2PDendrite from base.go

* Set base.go to upstream/master

* Move pubsub to demo cmd

* Move PostgreswithDHT to cmd

* Remove unstable features

* Add copyrights

* Move libp2pvalidator into p2pdendrite

* Rename dendrite-p2p-demo -> dendrite-demo-libp2p

* Update copyrights

* go mod tidy

Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>
2020-04-14 16:15:59 +01:00

126 lines
3.5 KiB
Go

// Copyright 2020 The Matrix.org Foundation C.I.C.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import (
"context"
"fmt"
"errors"
pstore "github.com/libp2p/go-libp2p-core/peerstore"
record "github.com/libp2p/go-libp2p-record"
"github.com/matrix-org/dendrite/common/basecomponent"
"github.com/libp2p/go-libp2p"
circuit "github.com/libp2p/go-libp2p-circuit"
crypto "github.com/libp2p/go-libp2p-core/crypto"
routing "github.com/libp2p/go-libp2p-core/routing"
host "github.com/libp2p/go-libp2p-core/host"
dht "github.com/libp2p/go-libp2p-kad-dht"
pubsub "github.com/libp2p/go-libp2p-pubsub"
"github.com/matrix-org/gomatrixserverlib"
"github.com/matrix-org/dendrite/common/config"
)
// P2PDendrite is a Peer-to-Peer variant of BaseDendrite.
type P2PDendrite struct {
Base basecomponent.BaseDendrite
// Store our libp2p object so that we can make outgoing connections from it
// later
LibP2P host.Host
LibP2PContext context.Context
LibP2PCancel context.CancelFunc
LibP2PDHT *dht.IpfsDHT
LibP2PPubsub *pubsub.PubSub
}
// NewP2PDendrite creates a new instance to be used by a component.
// The componentName is used for logging purposes, and should be a friendly name
// of the component running, e.g. SyncAPI.
func NewP2PDendrite(cfg *config.Dendrite, componentName string) *P2PDendrite {
baseDendrite := basecomponent.NewBaseDendrite(cfg, componentName)
ctx, cancel := context.WithCancel(context.Background())
privKey, err := crypto.UnmarshalEd25519PrivateKey(cfg.Matrix.PrivateKey[:])
if err != nil {
panic(err)
}
//defaultIP6ListenAddr, _ := multiaddr.NewMultiaddr("/ip6/::/tcp/0")
var libp2pdht *dht.IpfsDHT
libp2p, err := libp2p.New(ctx,
libp2p.Identity(privKey),
libp2p.DefaultListenAddrs,
//libp2p.ListenAddrs(defaultIP6ListenAddr),
libp2p.DefaultTransports,
libp2p.Routing(func(h host.Host) (r routing.PeerRouting, err error) {
libp2pdht, err = dht.New(ctx, h)
if err != nil {
return nil, err
}
libp2pdht.Validator = libP2PValidator{}
r = libp2pdht
return
}),
libp2p.EnableAutoRelay(),
libp2p.EnableRelay(circuit.OptHop),
)
if err != nil {
panic(err)
}
libp2ppubsub, err := pubsub.NewFloodSub(context.Background(), libp2p, []pubsub.Option{
pubsub.WithMessageSigning(true),
}...)
if err != nil {
panic(err)
}
fmt.Println("Our public key:", privKey.GetPublic())
fmt.Println("Our node ID:", libp2p.ID())
fmt.Println("Our addresses:", libp2p.Addrs())
cfg.Matrix.ServerName = gomatrixserverlib.ServerName(libp2p.ID().String())
return &P2PDendrite{
Base: *baseDendrite,
LibP2P: libp2p,
LibP2PContext: ctx,
LibP2PCancel: cancel,
LibP2PDHT: libp2pdht,
LibP2PPubsub: libp2ppubsub,
}
}
type libP2PValidator struct {
KeyBook pstore.KeyBook
}
func (v libP2PValidator) Validate(key string, value []byte) error {
ns, _, err := record.SplitKey(key)
if err != nil || ns != "matrix" {
return errors.New("not Matrix path")
}
return nil
}
func (v libP2PValidator) Select(k string, vals [][]byte) (int, error) {
return 0, nil
}