package gowaku import ( "encoding/json" "time" pubsub "github.com/libp2p/go-libp2p-pubsub" ) type wakuConfig struct { Host *string `json:"host,omitempty"` Port *int `json:"port,omitempty"` AdvertiseAddress *string `json:"advertiseAddr,omitempty"` NodeKey *string `json:"nodeKey,omitempty"` LogLevel *string `json:"logLevel,omitempty"` KeepAliveInterval *int `json:"keepAliveInterval,omitempty"` EnableRelay *bool `json:"relay"` RelayTopics []string `json:"relayTopics,omitempty"` GossipSubParams *GossipSubParams `json:"gossipsubParams,omitempty"` EnableFilter *bool `json:"filter,omitempty"` MinPeersToPublish *int `json:"minPeersToPublish,omitempty"` EnableDiscV5 *bool `json:"discV5,omitempty"` DiscV5BootstrapNodes []string `json:"discV5BootstrapNodes,omitempty"` DiscV5UDPPort *uint `json:"discV5UDPPort,omitempty"` EnableStore *bool `json:"store,omitempty"` DatabaseURL *string `json:"databaseURL,omitempty"` RetentionMaxMessages *int `json:"storeRetentionMaxMessages,omitempty"` RetentionTimeSeconds *int `json:"storeRetentionTimeSeconds,omitempty"` } var defaultHost = "0.0.0.0" var defaultPort = 60000 var defaultKeepAliveInterval = 20 var defaultEnableRelay = true var defaultMinPeersToPublish = 0 var defaultEnableFilter = false var defaultEnableDiscV5 = false var defaultDiscV5UDPPort = uint(9000) var defaultLogLevel = "INFO" var defaultEnableStore = false var defaultDatabaseURL = "sqlite3://store.db" var defaultRetentionMaxMessages = 10000 var defaultRetentionTimeSeconds = 30 * 24 * 60 * 60 // 30d // GossipSubParams defines all the gossipsub specific parameters. type GossipSubParams struct { // overlay parameters. // D sets the optimal degree for a GossipSub topic mesh. For example, if D == 6, // each peer will want to have about six peers in their mesh for each topic they're subscribed to. // D should be set somewhere between Dlo and Dhi. D *int `json:"d,omitempty"` // Dlo sets the lower bound on the number of peers we keep in a GossipSub topic mesh. // If we have fewer than Dlo peers, we will attempt to graft some more into the mesh at // the next heartbeat. Dlo *int `json:"dLow,omitempty"` // Dhi sets the upper bound on the number of peers we keep in a GossipSub topic mesh. // If we have more than Dhi peers, we will select some to prune from the mesh at the next heartbeat. Dhi *int `json:"dHigh,omitempty"` // Dscore affects how peers are selected when pruning a mesh due to over subscription. // At least Dscore of the retained peers will be high-scoring, while the remainder are // chosen randomly. Dscore *int `json:"dScore,omitempty"` // Dout sets the quota for the number of outbound connections to maintain in a topic mesh. // When the mesh is pruned due to over subscription, we make sure that we have outbound connections // to at least Dout of the survivor peers. This prevents sybil attackers from overwhelming // our mesh with incoming connections. // // Dout must be set below Dlo, and must not exceed D / 2. Dout *int `json:"dOut,omitempty"` // gossip parameters // HistoryLength controls the size of the message cache used for gossip. // The message cache will remember messages for HistoryLength heartbeats. HistoryLength *int `json:"historyLength,omitempty"` // HistoryGossip controls how many cached message ids we will advertise in // IHAVE gossip messages. When asked for our seen message IDs, we will return // only those from the most recent HistoryGossip heartbeats. The slack between // HistoryGossip and HistoryLength allows us to avoid advertising messages // that will be expired by the time they're requested. // // HistoryGossip must be less than or equal to HistoryLength to // avoid a runtime panic. HistoryGossip *int `json:"historyGossip,omitempty"` // Dlazy affects how many peers we will emit gossip to at each heartbeat. // We will send gossip to at least Dlazy peers outside our mesh. The actual // number may be more, depending on GossipFactor and how many peers we're // connected to. Dlazy *int `json:"dLazy,omitempty"` // GossipFactor affects how many peers we will emit gossip to at each heartbeat. // We will send gossip to GossipFactor * (total number of non-mesh peers), or // Dlazy, whichever is greater. GossipFactor *float64 `json:"gossipFactor,omitempty"` // GossipRetransmission controls how many times we will allow a peer to request // the same message id through IWANT gossip before we start ignoring them. This is designed // to prevent peers from spamming us with requests and wasting our resources. GossipRetransmission *int `json:"gossipRetransmission,omitempty"` // heartbeat interval // HeartbeatInitialDelayMs is the short delay before the heartbeat timer begins // after the router is initialized. HeartbeatInitialDelayMs *int `json:"heartbeatInitialDelayMs,omitempty"` // HeartbeatIntervalSeconds controls the time between heartbeats. HeartbeatIntervalSeconds *int `json:"heartbeatIntervalSeconds,omitempty"` // SlowHeartbeatWarning is the duration threshold for heartbeat processing before emitting // a warning; this would be indicative of an overloaded peer. SlowHeartbeatWarning *float64 `json:"slowHeartbeatWarning,omitempty"` // FanoutTTLSeconds controls how long we keep track of the fanout state. If it's been // FanoutTTLSeconds since we've published to a topic that we're not subscribed to, // we'll delete the fanout map for that topic. FanoutTTLSeconds *int `json:"fanoutTTLSeconds,omitempty"` // PrunePeers controls the number of peers to include in prune Peer eXchange. // When we prune a peer that's eligible for PX (has a good score, etc), we will try to // send them signed peer records for up to PrunePeers other peers that we // know of. PrunePeers *int `json:"prunePeers,omitempty"` // PruneBackoffSeconds controls the backoff time for pruned peers. This is how long // a peer must wait before attempting to graft into our mesh again after being pruned. // When pruning a peer, we send them our value of PruneBackoff so they know // the minimum time to wait. Peers running older versions may not send a backoff time, // so if we receive a prune message without one, we will wait at least PruneBackoff // before attempting to re-graft. PruneBackoffSeconds *int `json:"pruneBackoffSeconds,omitempty"` // UnsubscribeBackoffSeconds controls the backoff time to use when unsuscribing // from a topic. A peer should not resubscribe to this topic before this // duration. UnsubscribeBackoffSeconds *int `json:"unsubscribeBackoffSeconds,omitempty"` // Connectors controls the number of active connection attempts for peers obtained through PX. Connectors *int `json:"connectors,omitempty"` // MaxPendingConnections sets the maximum number of pending connections for peers attempted through px. MaxPendingConnections *int `json:"maxPendingConnections,omitempty"` // ConnectionTimeoutSeconds controls the timeout for connection attempts. ConnectionTimeoutSeconds *int `json:"connectionTimeoutSeconds,omitempty"` // DirectConnectTicks is the number of heartbeat ticks for attempting to reconnect direct peers // that are not currently connected. DirectConnectTicks *uint64 `json:"directConnectTicks,omitempty"` // DirectConnectInitialDelaySeconds is the initial delay before opening connections to direct peers DirectConnectInitialDelaySeconds *int `json:"directConnectInitialDelaySeconds,omitempty"` // OpportunisticGraftTicks is the number of heartbeat ticks for attempting to improve the mesh // with opportunistic grafting. Every OpportunisticGraftTicks we will attempt to select some // high-scoring mesh peers to replace lower-scoring ones, if the median score of our mesh peers falls // below a threshold (see https://godoc.org/github.com/libp2p/go-libp2p-pubsub#PeerScoreThresholds). OpportunisticGraftTicks *uint64 `json:"opportunisticGraftTicks,omitempty"` // OpportunisticGraftPeers is the number of peers to opportunistically graft. OpportunisticGraftPeers *int `json:"opportunisticGraftPeers,omitempty"` // If a GRAFT comes before GraftFloodThresholdSeconds has elapsed since the last PRUNE, // then there is an extra score penalty applied to the peer through P7. GraftFloodThresholdSeconds *int `json:"graftFloodThresholdSeconds,omitempty"` // MaxIHaveLength is the maximum number of messages to include in an IHAVE message. // Also controls the maximum number of IHAVE ids we will accept and request with IWANT from a // peer within a heartbeat, to protect from IHAVE floods. You should adjust this value from the // default if your system is pushing more than 5000 messages in HistoryGossip heartbeats; // with the defaults this is 1666 messages/s. MaxIHaveLength *int `json:"maxIHaveLength,omitempty"` // MaxIHaveMessages is the maximum number of IHAVE messages to accept from a peer within a heartbeat. MaxIHaveMessages *int `json:"maxIHaveMessages,omitempty"` // Time to wait for a message requested through IWANT following an IHAVE advertisement. // If the message is not received within this window, a broken promise is declared and // the router may apply bahavioural penalties. IWantFollowupTimeSeconds *int `json:"iWantFollowupTimeSeconds,omitempty"` // configures when a previously seen message ID can be forgotten about SeenMessagesTTLSeconds *int `json:"seenMessagesTTLSeconds"` } func getConfig(configJSON string) (wakuConfig, error) { var config wakuConfig if configJSON != "" { err := json.Unmarshal([]byte(configJSON), &config) if err != nil { return wakuConfig{}, err } } if config.Host == nil { config.Host = &defaultHost } if config.EnableRelay == nil { config.EnableRelay = &defaultEnableRelay } if config.EnableFilter == nil { config.EnableFilter = &defaultEnableFilter } if config.EnableDiscV5 == nil { config.EnableDiscV5 = &defaultEnableDiscV5 } if config.Host == nil { config.Host = &defaultHost } if config.Port == nil { config.Port = &defaultPort } if config.DiscV5UDPPort == nil { config.DiscV5UDPPort = &defaultDiscV5UDPPort } if config.KeepAliveInterval == nil { config.KeepAliveInterval = &defaultKeepAliveInterval } if config.MinPeersToPublish == nil { config.MinPeersToPublish = &defaultMinPeersToPublish } if config.LogLevel == nil { config.LogLevel = &defaultLogLevel } if config.EnableStore == nil { config.EnableStore = &defaultEnableStore } if config.DatabaseURL == nil { config.DatabaseURL = &defaultDatabaseURL } if config.RetentionMaxMessages == nil { config.RetentionMaxMessages = &defaultRetentionMaxMessages } if config.RetentionTimeSeconds == nil { config.RetentionTimeSeconds = &defaultRetentionTimeSeconds } return config, nil } func GetSeenTTL(cfg wakuConfig) time.Duration { if cfg.GossipSubParams == nil || *cfg.GossipSubParams.SeenMessagesTTLSeconds == 0 { return pubsub.TimeCacheDuration } return time.Duration(*cfg.GossipSubParams.SeenMessagesTTLSeconds) } func GetGossipSubParams(cfg *GossipSubParams) pubsub.GossipSubParams { params := pubsub.DefaultGossipSubParams() if cfg.D != nil { params.D = *cfg.D } if cfg.Dlo != nil { params.Dlo = *cfg.Dlo } if cfg.Dhi != nil { params.Dhi = *cfg.Dhi } if cfg.Dscore != nil { params.Dscore = *cfg.Dscore } if cfg.Dout != nil { params.Dout = *cfg.Dout } if cfg.HistoryLength != nil { params.HistoryLength = *cfg.HistoryLength } if cfg.HistoryGossip != nil { params.HistoryGossip = *cfg.HistoryGossip } if cfg.Dlazy != nil { params.Dlazy = *cfg.Dlazy } if cfg.GossipFactor != nil { params.GossipFactor = *cfg.GossipFactor } if cfg.GossipRetransmission != nil { params.GossipRetransmission = *cfg.GossipRetransmission } if cfg.HeartbeatInitialDelayMs != nil { params.HeartbeatInitialDelay = time.Duration(*cfg.HeartbeatInitialDelayMs) * time.Millisecond } if cfg.HeartbeatIntervalSeconds != nil { params.HeartbeatInterval = time.Duration(*cfg.HeartbeatIntervalSeconds) * time.Second } if cfg.SlowHeartbeatWarning != nil { params.SlowHeartbeatWarning = *cfg.SlowHeartbeatWarning } if cfg.FanoutTTLSeconds != nil { params.FanoutTTL = time.Duration(*cfg.FanoutTTLSeconds) * time.Second } if cfg.PrunePeers != nil { params.PrunePeers = *cfg.PrunePeers } if cfg.PruneBackoffSeconds != nil { params.PruneBackoff = time.Duration(*cfg.PruneBackoffSeconds) * time.Second } if cfg.UnsubscribeBackoffSeconds != nil { params.UnsubscribeBackoff = time.Duration(*cfg.UnsubscribeBackoffSeconds) * time.Second } if cfg.Connectors != nil { params.Connectors = *cfg.Connectors } if cfg.MaxPendingConnections != nil { params.MaxPendingConnections = *cfg.MaxPendingConnections } if cfg.ConnectionTimeoutSeconds != nil { params.ConnectionTimeout = time.Duration(*cfg.ConnectionTimeoutSeconds) * time.Second } if cfg.DirectConnectTicks != nil { params.DirectConnectTicks = *cfg.DirectConnectTicks } if cfg.DirectConnectInitialDelaySeconds != nil { params.DirectConnectInitialDelay = time.Duration(*cfg.DirectConnectInitialDelaySeconds) * time.Second } if cfg.OpportunisticGraftTicks != nil { params.OpportunisticGraftTicks = *cfg.OpportunisticGraftTicks } if cfg.OpportunisticGraftPeers != nil { params.OpportunisticGraftPeers = *cfg.OpportunisticGraftPeers } if cfg.GraftFloodThresholdSeconds != nil { params.GraftFloodThreshold = time.Duration(*cfg.GraftFloodThresholdSeconds) * time.Second } if cfg.MaxIHaveLength != nil { params.MaxIHaveLength = *cfg.MaxIHaveLength } if cfg.MaxIHaveMessages != nil { params.MaxIHaveMessages = *cfg.MaxIHaveMessages } if cfg.IWantFollowupTimeSeconds != nil { params.IWantFollowupTime = time.Duration(*cfg.IWantFollowupTimeSeconds) * time.Second } return params }