mirror of https://github.com/status-im/go-waku.git
67 lines
1.8 KiB
Go
67 lines
1.8 KiB
Go
package rln
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import (
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"errors"
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r "github.com/decanus/go-rln/rln"
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"github.com/status-im/go-waku/waku/v2/protocol/relay"
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"go.uber.org/zap"
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)
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func RlnRelayStatic(
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relay *relay.WakuRelay,
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group []r.IDCommitment,
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memKeyPair r.MembershipKeyPair,
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memIndex r.MembershipIndex,
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pubsubTopic string,
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contentTopic string,
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spamHandler SpamHandler,
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log *zap.Logger,
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) (*WakuRLNRelay, error) {
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log = log.Named("rln-static")
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log.Info("mounting rln-relay in off-chain/static mode")
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// check the peer's index and the inclusion of user's identity commitment in the group
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if memKeyPair.IDCommitment != group[int(memIndex)] {
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return nil, errors.New("peer's IDCommitment does not match commitment in group")
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}
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// create an RLN instance
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parameters, err := parametersKeyBytes()
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if err != nil {
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return nil, err
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}
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rlnInstance, err := r.NewRLN(parameters)
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if err != nil {
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return nil, err
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}
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// add members to the Merkle tree
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for _, member := range group {
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if !rlnInstance.InsertMember(member) {
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return nil, errors.New("could not add member")
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}
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}
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// create the WakuRLNRelay
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rlnPeer := &WakuRLNRelay{
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membershipKeyPair: memKeyPair,
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membershipIndex: memIndex,
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RLN: rlnInstance,
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pubsubTopic: pubsubTopic,
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contentTopic: contentTopic,
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log: log,
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}
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// adds a topic validator for the supplied pubsub topic at the relay protocol
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// messages published on this pubsub topic will be relayed upon a successful validation, otherwise they will be dropped
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// the topic validator checks for the correct non-spamming proof of the message
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rlnPeer.addValidator(relay, pubsubTopic, contentTopic, spamHandler)
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log.Info("rln relay topic validator mounted", zap.String("pubsubTopic", pubsubTopic), zap.String("contentTopic", contentTopic))
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return rlnPeer, nil
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}
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