Update perror code and regenerate perror.go

Makefile

@@ -1,12 +1,15 @@
-.PHONY: all build test tidy clean
+.PHONY: all build test tidy clean generate
 
 GO := go
 
 default: build
 
-build:
+build: generate
 	$(GO) build -o mysql-tester ./src
 
+generate: gen_perror
+	$(GO) generate ./src
+
 debug:
 	$(GO) build -gcflags="all=-N -l" -o mysql-tester ./src
 

generate_perror/main.go

@@ -18,6 +18,7 @@ import (
 	"flag"
 	"fmt"
 	"log"
+	"log/slog"
 	"os"
 	"os/exec"
 	"path/filepath"
@@ -27,7 +28,7 @@ import (
 )
 
 const (
-	fileHeader = `// Copyright 2023 PingCAP, Inc.
+	fileHeader = `// Copyright 2024 PingCAP, Inc.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -41,6 +42,8 @@ const (
 // limitations under the License.
 
 // Generated by generate_perror/main.go
+// Generated with:
+//     %s
 package main
 
 var MysqlErrNameToNum = map[string]int{
@@ -52,7 +55,7 @@ var (
 )
 
 func init() {
-	flag.StringVar(&tidbCodePath, "path", "../tidb", "Path to TiDB source code root directory.")
+	flag.StringVar(&tidbCodePath, "path", "../../tidb", "Path to TiDB source code root directory.")
 }
 
 func checkNewErr(errCode string, i int, nameToNum map[string]int) {
@@ -114,6 +117,11 @@ func main() {
 	parserCodes := len(NameToNum) - errnoCodes
 	log.Printf("Got %d New error codes from parser/mysql/errcode.go!", parserCodes)
 
+	perrorVersion, err := exec.Command("perror", "-V").Output()
+	if err != nil {
+		log.Fatalf("Failed to get version info from perror: %s", err)
+	}
+
 	// similar to:
 	//seq 1 100000 | xargs perror 2> /dev/null | grep '^MySQL error code MY-[0-9]* ([A-Z_]*).*' | sed 's/^MySQL error code MY-0*\([[:digit:]]*\) (\([^)]*\)).*/"\2": \1,/'
 	maxError := 20000
@@ -125,10 +133,10 @@ func main() {
 		cmd := exec.Command("perror", strconv.Itoa(i))
 		stdout, err := cmd.StdoutPipe()
 		if err != nil {
-			log.Fatal(err)
+			log.Fatalf("Error setting up call to perrror: %s", err)
 		}
 		if err = cmd.Start(); err != nil {
-			log.Fatal(err)
+			log.Fatalf("Error staring call to perror: %s", err)
 		}
 		s := bufio.NewScanner(stdout)
 		r := regexp.MustCompile(`^MySQL error code MY-0*(\d+) \((\w+)\)`)
@@ -147,7 +155,7 @@ func main() {
 		}
 		err = cmd.Wait()
 		if err != nil {
-			log.Fatal(err)
+			slog.Debug("Warning: Call to 'perror %d' failed: %s", i, err)
 		}
 	}
 	if maxError >= 1000 {
@@ -156,14 +164,14 @@ func main() {
 	log.Printf("Got %d New error codes from perror!", len(NameToNum)-parserCodes-errnoCodes)
 	f, err := os.Create("perror.go")
 	if err != nil {
-		log.Fatal(err)
+		log.Fatalf("Failed to create perror.go: %s", err)
 	}
 	defer f.Close()
 	w := bufio.NewWriter(f)
-	_, err = w.WriteString(fileHeader)
+	_, err = w.WriteString(fmt.Sprintf(fileHeader, perrorVersion))
 
 	if err != nil {
-		log.Fatal(err)
+		log.Fatalf("Failed to write fileHeader to file: %s", err)
 	}
 
 	codes := make([]ErrorCodeAndName, 0, len(NameToNum))
@@ -176,12 +184,12 @@ func main() {
 	for i := range codes {
 		_, err = w.WriteString("\t\"" + codes[i].Name + `": ` + strconv.Itoa(codes[i].Code) + ",\n")
 		if err != nil {
-			log.Fatal(err)
+			log.Fatalf("Failed to write error code to file: %s", err)
 		}
 	}
 	_, err = w.WriteString("}\n")
 	if err != nil {
-		log.Fatal(err)
+		log.Fatalf("Failed to write closing line to file: %s", err)
 	}
 	w.Flush()
 }

src/main.go

@@ -33,6 +33,9 @@ import (
 	log "github.com/sirupsen/logrus"
 )
 
+// Generate perror.go
+//go:generate ../gen_perror
+
 var (
 	host             string
 	port             string