mirror of
https://gitlab.com/pulsechaincom/erigon-pulse.git
synced 2025-01-01 00:31:21 +00:00
36 lines
1.2 KiB
Go
36 lines
1.2 KiB
Go
package handlers
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import (
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"reflect"
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"strings"
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"github.com/ledgerwatch/erigon/cmd/lightclient/sentinel/proto"
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"github.com/ledgerwatch/log/v3"
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"github.com/libp2p/go-libp2p/core/network"
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)
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// curryStreamHandler converts a func(ctx *proto.StreamContext, dat proto.Packet) error to func(network.Stream)
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// this allows us to write encoding non specific type safe handler without performance overhead
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func curryStreamHandler[T proto.Packet](newcodec func(network.Stream) proto.StreamCodec, fn func(ctx *proto.StreamContext, v T) error) func(network.Stream) {
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return func(s network.Stream) {
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defer s.Close()
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sd := newcodec(s)
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var t T
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val := t.Clone().(T)
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ctx, err := sd.Decode(val)
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if err != nil {
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// the stream reset error is ignored, because
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if !strings.Contains(err.Error(), "stream reset") {
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log.Debug("fail to decode packet", "err", err, "path", ctx.Protocol, "pkt", reflect.TypeOf(val))
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}
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return
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}
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err = fn(ctx, val)
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if err != nil {
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log.Debug("failed handling packet", "err", err, "path", ctx.Protocol, "pkt", reflect.TypeOf(val))
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return
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}
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log.Trace("[ReqResp] Req->Host", "from", ctx.Stream.ID(), "endpoint", ctx.Protocol, "msg", val)
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}
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}
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