Shed: Add a util to calculate total burn for a list of msgs

cmd/lotus-shed/burnfees.go

@@ -0,0 +1,65 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+
+	"github.com/filecoin-project/go-state-types/big"
+	"github.com/filecoin-project/lotus/build"
+	"github.com/filecoin-project/lotus/chain/actors/builtin"
+	"github.com/filecoin-project/lotus/chain/types"
+	lcli "github.com/filecoin-project/lotus/cli"
+	"github.com/urfave/cli/v2"
+)
+
+var burnFeesCmd = &cli.Command{
+	Name:  "burn-fees",
+	Usage: "Given a csv list of messages, calculate the total FIL burned",
+	Action: func(cctx *cli.Context) error {
+		if !cctx.Args().Present() {
+			return fmt.Errorf("must pass csv")
+		}
+
+		file, err := os.Open(cctx.Args().First())
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		defer file.Close()
+
+		api, closer, err := lcli.GetFullNodeAPI(cctx)
+		if err != nil {
+			return err
+		}
+		defer closer()
+
+		ctx := lcli.ReqContext(cctx)
+
+		scanner := bufio.NewScanner(file)
+		totalBurn := big.Zero()
+		for scanner.Scan() {
+			msg := build.MustParseCid(scanner.Text())
+			ir, err := api.StateReplay(ctx, types.EmptyTSK, msg)
+
+			if err != nil {
+				return err
+			}
+
+			for _, im := range ir.ExecutionTrace.Subcalls {
+				if im.Msg.To == builtin.BurntFundsActorAddr {
+					totalBurn = big.Add(totalBurn, im.Msg.Value)
+				}
+			}
+
+		}
+
+		if err := scanner.Err(); err != nil {
+			log.Fatal(err)
+		}
+
+		fmt.Println("total burn: ", totalBurn)
+
+		return nil
+	},
+}

cmd/lotus-shed/main.go

@@ -66,6 +66,7 @@ func main() {
 		chainCmd,
 		balancerCmd,
 		terminationsCmd,
+		burnFeesCmd,
 	}
 
 	app := &cli.App{