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write bitswap blocks into a temporary, in-memory block cache

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If they end up validating, we'll write them back to the underlying blockstore.
Otherwise, there's no reason to keep them.
This commit is contained in:
Steven Allen 2020-10-14 13:49:43 -07:00
parent 15fe998c68
commit ddade32bd3
1 changed files with 11 additions and 1 deletions
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12
node/modules/chain.go
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@ -4,6 +4,7 @@ import (
"bytes"
"context"
"os"
"time"
"github.com/ipfs/go-bitswap"
"github.com/ipfs/go-bitswap/network"
@ -30,6 +31,8 @@ import (
"github.com/filecoin-project/lotus/chain/types"
"github.com/filecoin-project/lotus/chain/vm"
"github.com/filecoin-project/lotus/lib/blockstore"
"github.com/filecoin-project/lotus/lib/bufbstore"
"github.com/filecoin-project/lotus/lib/timedbs"
"github.com/filecoin-project/lotus/node/modules/dtypes"
"github.com/filecoin-project/lotus/node/modules/helpers"
"github.com/filecoin-project/lotus/node/repo"
@ -41,8 +44,15 @@ func ChainBitswap(mctx helpers.MetricsCtx, lc fx.Lifecycle, host host.Host, rt r
bitswapNetwork := network.NewFromIpfsHost(host, rt, network.Prefix("/chain"))
bitswapOptions := []bitswap.Option{bitswap.ProvideEnabled(false)}
// Write all incoming bitswap blocks into a temporary blockstore for two
// block times. If they validate, they'll be persisted later.
cache := timedbs.NewTimedCacheBS(2 * time.Duration(build.BlockDelaySecs) * time.Second)
lc.Append(fx.Hook{OnStop: cache.Stop, OnStart: cache.Start})
bitswapBs := bufbstore.NewTieredBstore(bs, cache)
// Use just exch.Close(), closing the context is not needed
exch := bitswap.New(mctx, bitswapNetwork, bs, bitswapOptions...)
exch := bitswap.New(mctx, bitswapNetwork, bitswapBs, bitswapOptions...)
lc.Append(fx.Hook{
OnStop: func(ctx context.Context) error {
return exch.Close()