mirror of
https://gitlab.com/pulsechaincom/erigon-pulse.git
synced 2025-01-08 12:01:20 +00:00
48 lines
1.8 KiB
Go
48 lines
1.8 KiB
Go
/*
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Copyright 2022 Erigon-Lightclient contributors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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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/communication"
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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 *communication.StreamContext, dat communication.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 communication.Packet](newcodec func(network.Stream) communication.StreamCodec, fn func(ctx *communication.StreamContext, v T) error) func(network.Stream) {
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return func(s network.Stream) {
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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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