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chain.go
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chain.go
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package main
import (
"fmt"
"github.com/urfave/cli/v2"
lcli "github.com/filecoin-project/lotus/cli"
)
var chainCmd = &cli.Command{
Name: "chain",
Usage: "chain-related utilities",
Subcommands: []*cli.Command{
chainNullTsCmd,
computeStateRangeCmd,
},
}
var chainNullTsCmd = &cli.Command{
Name: "latest-null",
Usage: "finds the most recent null tipset",
Action: func(cctx *cli.Context) error {
api, closer, err := lcli.GetFullNodeAPI(cctx)
if err != nil {
return err
}
defer closer()
ctx := lcli.ReqContext(cctx)
ts, err := lcli.LoadTipSet(ctx, cctx, api)
if err != nil {
return err
}
for {
pts, err := api.ChainGetTipSet(ctx, ts.Parents())
if err != nil {
return err
}
if ts.Height() != pts.Height()+1 {
fmt.Println("null tipset at height ", ts.Height()-1)
return nil
}
ts = pts
}
},
}
var computeStateRangeCmd = &cli.Command{
Name: "compute-state-range",
Usage: "forces the computation of a range of tipsets",
ArgsUsage: "[START_TIPSET_REF] [END_TIPSET_REF]",
Action: func(cctx *cli.Context) error {
if cctx.NArg() != 2 {
return lcli.IncorrectNumArgs(cctx)
}
api, closer, err := lcli.GetFullNodeAPI(cctx)
if err != nil {
return err
}
defer closer()
ctx := lcli.ReqContext(cctx)
startTs, err := lcli.ParseTipSetRef(ctx, api, cctx.Args().First())
if err != nil {
return err
}
endTs, err := lcli.ParseTipSetRef(ctx, api, cctx.Args().Get(1))
if err != nil {
return err
}
fmt.Printf("computing tipset at height %d (start)\n", startTs.Height())
if _, err := api.StateCompute(ctx, startTs.Height(), nil, startTs.Key()); err != nil {
return err
}
for height := startTs.Height() + 1; height < endTs.Height(); height++ {
fmt.Printf("computing tipset at height %d\n", height)
// The fact that the tipset lookup method takes a tipset is rather annoying.
// This is because we walk back from the supplied tipset (which could be the HEAD)
// to locate the desired one.
ts, err := api.ChainGetTipSetByHeight(ctx, height, endTs.Key())
if err != nil {
return err
}
if _, err := api.StateCompute(ctx, height, nil, ts.Key()); err != nil {
return err
}
}
fmt.Printf("computing tipset at height %d (end)\n", endTs.Height())
if _, err := api.StateCompute(ctx, endTs.Height(), nil, endTs.Key()); err != nil {
return err
}
return nil
},
}