status-go/wakuv2/config.go

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// Copyright 2019 The Waku Library Authors.
//
// The Waku 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 Waku library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty off
// 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 Waku library. If not, see <http://www.gnu.org/licenses/>.
//
// This software uses the go-ethereum library, which is licensed
// under the GNU Lesser General Public Library, version 3 or any later.
package wakuv2
import (
"errors"
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"go.uber.org/zap"
"github.com/waku-org/go-waku/waku/v2/protocol/relay"
"github.com/status-im/status-go/protocol/common/shard"
ethdisc "github.com/ethereum/go-ethereum/p2p/dnsdisc"
"github.com/status-im/status-go/wakuv2/common"
)
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var (
ErrBadLightClientConfig = errors.New("either peer exchange server or discv5 must be disabled, and the peer exchange client must be enabled")
ErrBadFullNodeConfig = errors.New("peer exchange server and discv5 must be enabled, and the peer exchange client must be disabled")
)
// Config represents the configuration state of a waku node.
type Config struct {
MaxMessageSize uint32 `toml:",omitempty"` // Maximal message length allowed by the waku node
Host string `toml:",omitempty"`
Port int `toml:",omitempty"`
EnablePeerExchangeServer bool `toml:",omitempty"` // PeerExchange server makes sense only when discv5 is running locally as it will have a cache of peers that it can respond to in case a PeerExchange request comes from the PeerExchangeClient
EnablePeerExchangeClient bool `toml:",omitempty"`
KeepAliveInterval int `toml:",omitempty"`
MinPeersForRelay int `toml:",omitempty"` // Indicates the minimum number of peers required for using Relay Protocol
MinPeersForFilter int `toml:",omitempty"` // Indicates the minimum number of peers required for using Filter Protocol
LightClient bool `toml:",omitempty"` // Indicates if the node is a light client
WakuNodes []string `toml:",omitempty"`
Rendezvous bool `toml:",omitempty"`
DiscV5BootstrapNodes []string `toml:",omitempty"`
Nameserver string `toml:",omitempty"` // Optional nameserver to use for dns discovery
Resolver ethdisc.Resolver `toml:",omitempty"` // Optional resolver to use for dns discovery
EnableDiscV5 bool `toml:",omitempty"` // Indicates whether discv5 is enabled or not
DiscoveryLimit int `toml:",omitempty"` // Indicates the number of nodes to discover with peer exchange client
AutoUpdate bool `toml:",omitempty"`
UDPPort int `toml:",omitempty"`
EnableStore bool `toml:",omitempty"`
StoreCapacity int `toml:",omitempty"`
StoreSeconds int `toml:",omitempty"`
TelemetryServerURL string `toml:",omitempty"`
DefaultShardPubsubTopic string `toml:",omitempty"` // Pubsub topic to be used by default for messages that do not have a topic assigned (depending whether sharding is used or not)
UseShardAsDefaultTopic bool `toml:",omitempty"`
ClusterID uint16 `toml:",omitempty"`
EnableConfirmations bool `toml:",omitempty"` // Enable sending message confirmations
SkipPublishToTopic bool `toml:",omitempty"` // Used in testing
}
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func (c *Config) Validate(logger *zap.Logger) error {
if c.LightClient && (c.EnablePeerExchangeServer || c.EnableDiscV5 || !c.EnablePeerExchangeClient) {
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logger.Warn("bad configuration for a light client", zap.Error(ErrBadLightClientConfig))
return nil
}
if !c.LightClient && (!c.EnablePeerExchangeServer || !c.EnableDiscV5 || c.EnablePeerExchangeClient) {
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logger.Warn("bad configuration for a full node", zap.Error(ErrBadFullNodeConfig))
return nil
}
return nil
}
var DefaultConfig = Config{
MaxMessageSize: common.DefaultMaxMessageSize,
Host: "0.0.0.0",
Port: 0,
KeepAliveInterval: 10, // second
DiscoveryLimit: 20,
MinPeersForRelay: 1, // TODO: determine correct value with Vac team
MinPeersForFilter: 2, // TODO: determine correct value with Vac team and via testing
AutoUpdate: false,
}
func setDefaults(cfg *Config) *Config {
if cfg == nil {
cfg = new(Config)
}
if cfg.MaxMessageSize == 0 {
cfg.MaxMessageSize = DefaultConfig.MaxMessageSize
}
if cfg.Host == "" {
cfg.Host = DefaultConfig.Host
}
if cfg.KeepAliveInterval == 0 {
cfg.KeepAliveInterval = DefaultConfig.KeepAliveInterval
}
if cfg.DiscoveryLimit == 0 {
cfg.DiscoveryLimit = DefaultConfig.DiscoveryLimit
}
if cfg.MinPeersForRelay == 0 {
cfg.MinPeersForRelay = DefaultConfig.MinPeersForRelay
}
if cfg.MinPeersForFilter == 0 {
cfg.MinPeersForFilter = DefaultConfig.MinPeersForFilter
}
if cfg.DefaultShardPubsubTopic == "" {
if cfg.UseShardAsDefaultTopic {
cfg.DefaultShardPubsubTopic = shard.DefaultShardPubsubTopic()
} else {
cfg.DefaultShardPubsubTopic = relay.DefaultWakuTopic
}
}
return cfg
}