core: more compact bad block report (ethereum#25714)

This shortens the chain config summary in bad block reports,
and adds go-ethereum version information as well.

Co-authored-by: Felix Lange <fjl@twurst.com>

core/badblock.go

@@ -0,0 +1,157 @@
+// Copyright 2022 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package core
+
+import (
+	"fmt"
+	"runtime"
+	"runtime/debug"
+	"strings"
+
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/params"
+)
+
+const ourPath = "github.com/ethereum/go-ethereum" // Path to our module
+
+// summarizeBadBlock returns a string summarizing the bad block and other
+// relevant information.
+func summarizeBadBlock(block *types.Block, receipts []*types.Receipt, config *params.ChainConfig, err error) string {
+	var receiptString string
+	for i, receipt := range receipts {
+		receiptString += fmt.Sprintf("\n  %d: cumulative: %v gas: %v contract: %v status: %v tx: %v logs: %v bloom: %x state: %x",
+			i, receipt.CumulativeGasUsed, receipt.GasUsed, receipt.ContractAddress.Hex(),
+			receipt.Status, receipt.TxHash.Hex(), receipt.Logs, receipt.Bloom, receipt.PostState)
+	}
+	version, vcs := runtimeInfo()
+	platform := fmt.Sprintf("%s %s %s %s", version, runtime.Version(), runtime.GOARCH, runtime.GOOS)
+	if vcs != "" {
+		vcs = fmt.Sprintf("\nVCS: %s", vcs)
+	}
+	return fmt.Sprintf(`
+########## BAD BLOCK #########
+Block: %v (%#x)
+Error: %v
+Platform: %v%v
+Chain config: %#v
+Receipts: %v
+##############################
+`, block.Number(), block.Hash(), err, platform, vcs, config, receiptString)
+}
+
+// runtimeInfo returns build and platform information about the current binary.
+//
+// If the package that is currently executing is a prefixed by our go-ethereum
+// module path, it will print out commit and date VCS information. Otherwise,
+// it will assume it's imported by a third-party and will return the imported
+// version and whether it was replaced by another module.
+func runtimeInfo() (string, string) {
+	var (
+		version       = params.VersionWithMeta
+		vcs           = ""
+		buildInfo, ok = debug.ReadBuildInfo()
+	)
+	if ok {
+		version = versionInfo(buildInfo)
+		if status, ok := vcsInfo(buildInfo); ok {
+			modified := ""
+			if status.modified {
+				modified = " (dirty)"
+			}
+			vcs = status.revision + "-" + status.time + modified
+		}
+	}
+	return version, vcs
+}
+
+// versionInfo returns version information for the currently executing
+// implementation.
+//
+// Depending on how the code is instansiated, it returns different amounts of
+// information. If it is unable to determine which module is related to our
+// package it falls back to the hardcoded values in the params package.
+func versionInfo(info *debug.BuildInfo) string {
+	// If the main package is from our repo, prefix version with "geth".
+	if strings.HasPrefix(info.Path, ourPath) {
+		return fmt.Sprintf("geth %s", info.Main.Version)
+	}
+	// Not our main package, so explicitly print out the module path and
+	// version.
+	var version string
+	if info.Main.Path != "" && info.Main.Version != "" {
+		// These can be empty when invoked with "go run".
+		version = fmt.Sprintf("%s@%s ", info.Main.Path, info.Main.Version)
+	}
+	mod := findModule(info, ourPath)
+	if mod == nil {
+		// If our module path wasn't imported, it's unclear which
+		// version of our code they are running. Fallback to hardcoded
+		// version.
+		return version + fmt.Sprintf("geth %s", params.VersionWithMeta)
+	}
+	// Our package is a dependency for the main module. Return path and
+	// version data for both.
+	version += fmt.Sprintf("%s@%s", mod.Path, mod.Version)
+	if mod.Replace != nil {
+		// If our package was replaced by something else, also note that.
+		version += fmt.Sprintf(" (replaced by %s@%s)", mod.Replace.Path, mod.Replace.Version)
+	}
+	return version
+}
+
+type status struct {
+	revision string
+	time     string
+	modified bool
+}
+
+// vcsInfo returns VCS information of the build.
+func vcsInfo(info *debug.BuildInfo) (s status, ok bool) {
+	for _, v := range info.Settings {
+		switch v.Key {
+		case "vcs.revision":
+			if len(v.Value) < 8 {
+				s.revision = v.Value
+			} else {
+				s.revision = v.Value[:8]
+			}
+		case "vcs.modified":
+			if v.Value == "true" {
+				s.modified = true
+			}
+		case "vcs.time":
+			s.time = v.Value
+		}
+	}
+	if s.revision != "" && s.time != "" {
+		ok = true
+	}
+	return
+}
+
+// findModule returns the module at path.
+func findModule(info *debug.BuildInfo, path string) *debug.Module {
+	if info.Path == ourPath {
+		return &info.Main
+	}
+	for _, mod := range info.Deps {
+		if mod.Path == path {
+			return mod
+		}
+	}
+	return nil
+}

core/blockchain.go

@@ -239,7 +239,7 @@ func NewBlockChain(db ethdb.Database, cacheConfig *CacheConfig, genesis *Genesis
 	}
 	log.Info("")
 	log.Info(strings.Repeat("-", 153))
-	for _, line := range strings.Split(chainConfig.String(), "\n") {
+	for _, line := range strings.Split(chainConfig.Description(), "\n") {
 		log.Info(line)
 	}
 	log.Info(strings.Repeat("-", 153))
@@ -2375,24 +2375,7 @@ func (bc *BlockChain) maintainTxIndex(ancients uint64) {
 // reportBlock logs a bad block error.
 func (bc *BlockChain) reportBlock(block *types.Block, receipts types.Receipts, err error) {
 	rawdb.WriteBadBlock(bc.db, block)
-
-	var receiptString string
-	for i, receipt := range receipts {
-		receiptString += fmt.Sprintf("\t %d: cumulative: %v gas: %v contract: %v status: %v tx: %v logs: %v bloom: %x state: %x\n",
-			i, receipt.CumulativeGasUsed, receipt.GasUsed, receipt.ContractAddress.Hex(),
-			receipt.Status, receipt.TxHash.Hex(), receipt.Logs, receipt.Bloom, receipt.PostState)
-	}
-	log.Error(fmt.Sprintf(`
-########## BAD BLOCK #########
-Chain config: %v
-
-Number: %v
-Hash: %#x
-%v
-
-Error: %v
-##############################
-`, bc.chainConfig, block.Number(), block.Hash(), receiptString, err))
+	log.Error(summarizeBadBlock(block, receipts, bc.Config(), err))
 }
 
 // InsertHeaderChain attempts to insert the given header chain in to the local

les/client.go

@@ -105,7 +105,7 @@ func New(stack *node.Node, config *ethconfig.Config) (*LightEthereum, error) {
 	}
 	log.Info("")
 	log.Info(strings.Repeat("-", 153))
-	for _, line := range strings.Split(chainConfig.String(), "\n") {
+	for _, line := range strings.Split(chainConfig.Description(), "\n") {
 		log.Info(line)
 	}
 	log.Info(strings.Repeat("-", 153))

params/config.go

@@ -407,8 +407,8 @@ func (c *CliqueConfig) String() string {
 	return "clique"
 }
 
-// String implements the fmt.Stringer interface.
-func (c *ChainConfig) String() string {
+// Description returns a human-readable description of ChainConfig.
+func (c *ChainConfig) Description() string {
 	var banner string
 
 	// Create some basinc network config output