shed: command to list duplicate messages in tipsets (steb)

cmd/lotus-shed/balances.go

@@ -3,11 +3,14 @@ package main
 import (
 	"context"
 	"encoding/csv"
+	"encoding/json"
 	"fmt"
 	"io"
 	"os"
+	"runtime"
 	"strconv"
 	"strings"
+	"sync"
 	"time"
 
 	"github.com/filecoin-project/lotus/build"
@@ -70,6 +73,204 @@ var auditsCmd = &cli.Command{
 		chainBalanceStateCmd,
 		chainPledgeCmd,
 		fillBalancesCmd,
+		duplicatedMessagesCmd,
+	},
+}
+
+var duplicatedMessagesCmd = &cli.Command{
+	Name:  "duplicate-messages",
+	Usage: "Check for duplicate messages included in a tipset.",
+	UsageText: `Check for duplicate messages included in a tipset.
+
+Due to Filecoin's expected consensus, a tipset may include the same message multiple times in
+different blocks. The message will only be executed once.
+
+This command will find such duplicate messages and print them to standard out as newline-delimited
+JSON. Status messages in the form of "H: $HEIGHT ($PROGRESS%)" will be printed to standard error for
+every day of chain processed.
+`,
+	Flags: []cli.Flag{
+		&cli.IntFlag{
+			Name:        "parallel",
+			Usage:       "the number of parallel threads for block processing",
+			DefaultText: "half the number of cores",
+		},
+		&cli.IntFlag{
+			Name:        "start",
+			Usage:       "the first epoch to check",
+			DefaultText: "genesis",
+		},
+		&cli.IntFlag{
+			Name:        "end",
+			Usage:       "the last epoch to check",
+			DefaultText: "the current head",
+		},
+		&cli.IntSliceFlag{
+			Name:        "method",
+			Usage:       "Filter results by method number.",
+			DefaultText: "all methods",
+		},
+	},
+	Action: func(cctx *cli.Context) error {
+		api, closer, err := lcli.GetFullNodeAPI(cctx)
+		if err != nil {
+			return err
+		}
+
+		defer closer()
+		ctx := lcli.ReqContext(cctx)
+
+		var head *types.TipSet
+		if cctx.IsSet("end") {
+			epoch := abi.ChainEpoch(cctx.Int("end"))
+			head, err = api.ChainGetTipSetByHeight(ctx, epoch, types.EmptyTSK)
+		} else {
+			head, err = api.ChainHead(ctx)
+		}
+		if err != nil {
+			return err
+		}
+
+		var printLk sync.Mutex
+
+		threads := runtime.NumCPU() / 2
+		if cctx.IsSet("parallel") {
+			threads = cctx.Int("int")
+			if threads <= 0 {
+				return fmt.Errorf("parallelism needs to be at least 1")
+			}
+		} else if threads == 0 {
+			threads = 1 // if we have one core, but who are we kidding...
+		}
+
+		throttle := make(chan struct{}, threads)
+
+		methods := make(map[abi.MethodNum]bool)
+		for _, m := range cctx.IntSlice("method") {
+			if m < 0 {
+				return fmt.Errorf("expected method numbers to be non-negative")
+			}
+			methods[abi.MethodNum(m)] = true
+		}
+
+		target := abi.ChainEpoch(cctx.Int("start"))
+		totalEpochs := head.Height() - target
+
+		for target <= head.Height() {
+			select {
+			case throttle <- struct{}{}:
+			case <-ctx.Done():
+				return ctx.Err()
+			}
+
+			go func(ts *types.TipSet) {
+				defer func() {
+					<-throttle
+				}()
+
+				type addrNonce struct {
+					s address.Address
+					n uint64
+				}
+				anonce := func(m *types.Message) addrNonce {
+					return addrNonce{
+						s: m.From,
+						n: m.Nonce,
+					}
+				}
+
+				msgs := map[addrNonce]map[cid.Cid]*types.Message{}
+
+				encoder := json.NewEncoder(os.Stdout)
+
+				for _, bh := range ts.Blocks() {
+					bms, err := api.ChainGetBlockMessages(ctx, bh.Cid())
+					if err != nil {
+						fmt.Fprintln(os.Stderr, "ERROR: ", err)
+						return
+					}
+
+					for i, m := range bms.BlsMessages {
+						if len(methods) > 0 && !methods[m.Method] {
+							continue
+						}
+						c, ok := msgs[anonce(m)]
+						if !ok {
+							c = make(map[cid.Cid]*types.Message, 1)
+							msgs[anonce(m)] = c
+						}
+						c[bms.Cids[i]] = m
+					}
+
+					for i, m := range bms.SecpkMessages {
+						if len(methods) > 0 && !methods[m.Message.Method] {
+							continue
+						}
+						c, ok := msgs[anonce(&m.Message)]
+						if !ok {
+							c = make(map[cid.Cid]*types.Message, 1)
+							msgs[anonce(&m.Message)] = c
+						}
+						c[bms.Cids[len(bms.BlsMessages)+i]] = &m.Message
+					}
+				}
+				for _, ms := range msgs {
+					if len(ms) == 1 {
+						continue
+					}
+					type Msg struct {
+						Cid    string
+						Value  string
+						Method uint64
+					}
+					grouped := map[string][]Msg{}
+					for c, m := range ms {
+						addr := m.To.String()
+						grouped[addr] = append(grouped[addr], Msg{
+							Cid:    c.String(),
+							Value:  types.FIL(m.Value).String(),
+							Method: uint64(m.Method),
+						})
+					}
+					printLk.Lock()
+					err := encoder.Encode(grouped)
+					if err != nil {
+						fmt.Fprintln(os.Stderr, "ERROR: ", err)
+					}
+					printLk.Unlock()
+				}
+			}(head)
+
+			if head.Parents().IsEmpty() {
+				break
+			}
+
+			head, err = api.ChainGetTipSet(ctx, head.Parents())
+			if err != nil {
+				return err
+			}
+
+			if head.Height()%2880 == 0 {
+				printLk.Lock()
+				fmt.Fprintf(os.Stderr, "H: %s (%d%%)\n", head.Height(), (100*(head.Height()-target))/totalEpochs)
+				printLk.Unlock()
+			}
+		}
+
+		for i := 0; i < threads; i++ {
+			select {
+			case throttle <- struct{}{}:
+			case <-ctx.Done():
+				return ctx.Err()
+			}
+
+		}
+
+		printLk.Lock()
+		fmt.Fprintf(os.Stderr, "H: %s (100%%)\n", head.Height())
+		printLk.Unlock()
+
+		return nil
 	},
 }