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htlcswitch: concurrent onion decoding

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This commit is contained in:
Joost Jager 2021-04-27 16:51:27 +02:00
parent 94b6f8af5b
commit dddf0bc887
3 changed files with 17 additions and 7 deletions
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2
go.mod
View File

@ -39,7 +39,7 @@ require (
github.com/kkdai/bstream v0.0.0-20181106074824-b3251f7901ec
github.com/lightninglabs/neutrino v0.12.1
github.com/lightninglabs/protobuf-hex-display v1.4.3-hex-display
github.com/lightningnetwork/lightning-onion v1.0.2-0.20200501022730-3c8c8d0b89ea
github.com/lightningnetwork/lightning-onion v1.0.2-0.20210520211913-522b799e65b1
github.com/lightningnetwork/lnd/cert v1.0.3
github.com/lightningnetwork/lnd/clock v1.0.1
github.com/lightningnetwork/lnd/healthcheck v1.0.0

4
go.sum
View File

@ -211,8 +211,8 @@ github.com/lightninglabs/neutrino v0.12.1 h1:9umzk5kKNc/l3bAyak8ClSRP1qSulnjc6kp
github.com/lightninglabs/neutrino v0.12.1/go.mod h1:GlKninWpRBbL7b8G0oQ36/8downfnFwKsr0hbRA6E/E=
github.com/lightninglabs/protobuf-hex-display v1.4.3-hex-display h1:RZJ8H4ueU/aQ9pFtx5wqsuD3B/DezrewJeVwDKKYY8E=
github.com/lightninglabs/protobuf-hex-display v1.4.3-hex-display/go.mod h1:2oKOBU042GKFHrdbgGiKax4xVrFiZu51lhacUZQ9MnE=
github.com/lightningnetwork/lightning-onion v1.0.2-0.20200501022730-3c8c8d0b89ea h1:oCj48NQ8u7Vz+MmzHqt0db6mxcFZo3Ho7M5gCJauY/k=
github.com/lightningnetwork/lightning-onion v1.0.2-0.20200501022730-3c8c8d0b89ea/go.mod h1:rigfi6Af/KqsF7Za0hOgcyq2PNH4AN70AaMRxcJkff4=
github.com/lightningnetwork/lightning-onion v1.0.2-0.20210520211913-522b799e65b1 h1:h1BsjPzWea790mAXISoiT/qr0JRcixTCDNLmjsDThSw=
github.com/lightningnetwork/lightning-onion v1.0.2-0.20210520211913-522b799e65b1/go.mod h1:rigfi6Af/KqsF7Za0hOgcyq2PNH4AN70AaMRxcJkff4=
github.com/ltcsuite/ltcd v0.0.0-20190101042124-f37f8bf35796 h1:sjOGyegMIhvgfq5oaue6Td+hxZuf3tDC8lAPrFldqFw=
github.com/ltcsuite/ltcd v0.0.0-20190101042124-f37f8bf35796/go.mod h1:3p7ZTf9V1sNPI5H8P3NkTFF4LuwMdPl2DodF60qAKqY=
github.com/ltcsuite/ltcutil v0.0.0-20181217130922-17f3b04680b6/go.mod h1:8Vg/LTOO0KYa/vlHWJ6XZAevPQThGH5sufO0Hrou/lA=

18
htlcswitch/hop/iterator.go
View File

@ -4,6 +4,7 @@ import (
"bytes"
"fmt"
"io"
"sync"
"github.com/btcsuite/btcd/btcec"
sphinx "github.com/lightningnetwork/lightning-onion"
@ -293,12 +294,21 @@ func (p *OnionProcessor) DecodeHopIterators(id []byte,
}
}
for i, req := range reqs {
onionPkt := &onionPkts[i]
resp := &resps[i]
// Execute cpu-heavy onion decoding in parallel.
var wg sync.WaitGroup
for i := range reqs {
wg.Add(1)
go func(seqNum uint16) {
defer wg.Done()
resp.FailCode = decode(uint16(i), onionPkt, req)
onionPkt := &onionPkts[seqNum]
resps[seqNum].FailCode = decode(
seqNum, onionPkt, reqs[seqNum],
)
}(uint16(i))
}
wg.Wait()
// With that batch created, we will now attempt to write the shared
// secrets to disk. This operation will returns the set of indices that