70 lines
2.0 KiB
Go
70 lines
2.0 KiB
Go
package grpc
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import (
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"fmt"
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spyv1 "github.com/certusone/wormhole/node/pkg/proto/spy/v1"
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"github.com/wormhole-foundation/wormhole/sdk/vaa"
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"go.uber.org/zap"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/status"
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)
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// Handler represents a GRPC subscription service handler.
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type Handler struct {
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spyv1.UnimplementedSpyRPCServiceServer
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svs *SignedVaaSubscribers
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logger *zap.Logger
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}
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// NewHandler creates a new handler of suscriptions.
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func NewHandler(svs *SignedVaaSubscribers, logger *zap.Logger) *Handler {
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return &Handler{
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svs: svs,
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logger: logger,
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}
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}
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// SubscribeSignedVAA implements the suscriptions of signed VAA.
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func (h *Handler) SubscribeSignedVAA(req *spyv1.SubscribeSignedVAARequest, resp spyv1.SpyRPCService_SubscribeSignedVAAServer) error {
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h.logger.Info("Receiving new subscriber in signed VAA")
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var fi []filterSignedVaa
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if req.Filters != nil {
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for _, f := range req.Filters {
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switch t := f.Filter.(type) {
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case *spyv1.FilterEntry_EmitterFilter:
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addr, err := vaa.StringToAddress(t.EmitterFilter.EmitterAddress)
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if err != nil {
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h.logger.Error("Decoding emitter address", zap.Error(err))
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return status.Error(codes.InvalidArgument, fmt.Sprintf("failed to decode emitter address: %v", err))
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}
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fi = append(fi, filterSignedVaa{
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chainId: vaa.ChainID(t.EmitterFilter.ChainId),
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emitterAddr: addr,
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})
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default:
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h.logger.Error("Unsupported filter type", zap.Any("filter", t))
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return status.Error(codes.InvalidArgument, "unsupported filter type")
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}
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}
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}
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subscriber := h.svs.Register(fi)
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defer h.svs.Unregister(subscriber)
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for {
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select {
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case <-resp.Context().Done():
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h.logger.Error("Context done", zap.String("id", subscriber.id), zap.Error(resp.Context().Err()))
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return resp.Context().Err()
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case msg := <-subscriber.ch:
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if err := resp.Send(&spyv1.SubscribeSignedVAAResponse{
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VaaBytes: msg.vaaBytes,
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}); err != nil {
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h.logger.Error("Sending vaas", zap.String("id", subscriber.id), zap.Error(err))
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return err
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}
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}
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}
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}
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