mirror of https://github.com/status-im/go-waku.git
117 lines
2.8 KiB
Go
117 lines
2.8 KiB
Go
//go:build gowaku_rln
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// +build gowaku_rln
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package node
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import (
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"bytes"
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"context"
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"errors"
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"github.com/waku-org/go-waku/waku/v2/protocol/rln"
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"github.com/waku-org/go-waku/waku/v2/protocol/rln/group_manager/dynamic"
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"github.com/waku-org/go-waku/waku/v2/protocol/rln/group_manager/static"
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r "github.com/waku-org/go-zerokit-rln/rln"
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"go.uber.org/zap"
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)
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// RLNRelay is used to access any operation related to Waku RLN protocol
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func (w *WakuNode) RLNRelay() RLNRelay {
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return w.rlnRelay
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}
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func (w *WakuNode) mountRlnRelay(ctx context.Context) error {
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// check whether inputs are provided
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// relay protocol is the prerequisite of rln-relay
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if w.Relay() == nil {
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return errors.New("relay protocol is required")
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}
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// check whether the pubsub topic is supported at the relay level
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topicFound := false
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for _, t := range w.Relay().Topics() {
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if t == w.opts.rlnRelayPubsubTopic {
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topicFound = true
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break
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}
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}
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if !topicFound {
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return errors.New("relay protocol does not support the configured pubsub topic")
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}
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var err error
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var groupManager rln.GroupManager
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if !w.opts.rlnRelayDynamic {
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w.log.Info("setting up waku-rln-relay in off-chain mode")
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// set up rln relay inputs
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groupKeys, idCredential, err := static.Setup(w.opts.rlnRelayMemIndex)
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if err != nil {
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return err
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}
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groupManager, err = static.NewStaticGroupManager(groupKeys, idCredential, w.opts.rlnRelayMemIndex, w.log)
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if err != nil {
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return err
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}
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} else {
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w.log.Info("setting up waku-rln-relay in on-chain mode")
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groupManager, err = dynamic.NewDynamicGroupManager(
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w.opts.rlnETHClientAddress,
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w.opts.rlnETHPrivateKey,
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w.opts.rlnMembershipContractAddress,
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w.opts.keystorePath,
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w.opts.keystorePassword,
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true,
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w.opts.rlnRegistrationHandler,
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w.log,
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)
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if err != nil {
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return err
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}
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}
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rlnRelay, err := rln.New(w.Relay(), groupManager, w.opts.rlnRelayPubsubTopic, w.opts.rlnRelayContentTopic, w.opts.rlnSpamHandler, w.timesource, w.log)
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if err != nil {
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return err
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}
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err = rlnRelay.Start(ctx)
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if err != nil {
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return err
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}
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w.rlnRelay = rlnRelay
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if !w.opts.rlnRelayDynamic {
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// check the correct construction of the tree by comparing the calculated root against the expected root
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// no error should happen as it is already captured in the unit tests
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root, err := rlnRelay.RLN.GetMerkleRoot()
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if err != nil {
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return err
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}
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expectedRoot, err := r.ToBytes32LE(r.STATIC_GROUP_MERKLE_ROOT)
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if err != nil {
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return err
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}
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if !bytes.Equal(expectedRoot[:], root[:]) {
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return errors.New("root mismatch: something went wrong not in Merkle tree construction")
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}
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}
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w.log.Info("mounted waku RLN relay", zap.String("pubsubTopic", w.opts.rlnRelayPubsubTopic), zap.String("contentTopic", w.opts.rlnRelayContentTopic))
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return nil
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}
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func (w *WakuNode) stopRlnRelay() error {
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if w.rlnRelay != nil {
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w.rlnRelay.Stop()
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}
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return nil
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}
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