优化本地mysql服务自动启动逻辑

internal/db/utils/utils.go

@@ -1,10 +1,18 @@
 package dbutils
 
 import (
+	executils "github.com/TeaOSLab/EdgeAPI/internal/utils/exec"
+	"github.com/iwind/TeaGo/Tea"
 	"github.com/iwind/TeaGo/dbs"
+	"github.com/iwind/TeaGo/lists"
+	"github.com/iwind/TeaGo/logs"
 	"github.com/iwind/TeaGo/types"
 	"net"
+	"os"
+	"os/exec"
+	"regexp"
 	"strings"
+	"time"
 )
 
 // NewQuery 构造Query
@@ -127,3 +135,79 @@ func MySQLVersionFrom8() (bool, error) {
 	}
 	return false, nil
 }
+
+// FindMySQLPath find out mysqld_safe path from system processes
+func FindMySQLPath() string {
+	psExe, err := executils.LookPath("ps")
+	if err != nil {
+		return ""
+	}
+	var cmd = executils.NewTimeoutCmd(3*time.Second, psExe, "-ef").
+		WithStdout().
+		WithStderr()
+	err = cmd.Run()
+	if err != nil {
+		return ""
+	}
+	var reg = regexp.MustCompile(`\s(/\S+/mysqld_safe)\s`)
+	var matches = reg.FindStringSubmatch(cmd.Stdout())
+	if len(matches) > 1 {
+		var path = matches[1]
+		_, err = os.Stat(path)
+		if err != nil {
+			return ""
+		}
+		return path
+	}
+	return ""
+}
+
+// FindMySQLPathAndRemember find out mysqld_safe path then remember it for future usage
+func FindMySQLPathAndRemember() {
+	var path = FindMySQLPath()
+	if len(path) == 0 {
+		return
+	}
+
+	var cacheFile = Tea.Root + "/data/mysql-path.cache"
+	_ = os.WriteFile(cacheFile, []byte(path), 0666) // ignore error
+}
+
+// StartLocalMySQL try to start local mysql server
+func StartLocalMySQL() {
+	// possible installed paths
+	var mysqldSafeFiles = []string{}
+
+	// read last path from cache file
+	var cacheFile = Tea.Root + "/data/mysql-path.cache"
+	cacheData, err := os.ReadFile(cacheFile)
+	if err == nil && len(cacheData) > 0 {
+		mysqldSafeFiles = append(mysqldSafeFiles, string(cacheData))
+	}
+
+	// from $PATH variable
+	exePath, lookErr := executils.LookPath("mysqld_safe")
+	if lookErr == nil && len(exePath) > 0 && !lists.ContainsString(mysqldSafeFiles, exePath) {
+		mysqldSafeFiles = append(mysqldSafeFiles, exePath)
+	}
+
+	// these installed by edge-boot or foolish-mysql
+	for _, path := range []string{
+		"/usr/local/mysql/bin/mysqld_safe",
+		"/usr/local/mysql8/bin/mysqld_safe",
+	} {
+		if !lists.ContainsString(mysqldSafeFiles, path) {
+			mysqldSafeFiles = append(mysqldSafeFiles, path)
+		}
+	}
+	
+	for _, mysqldSafeFile := range mysqldSafeFiles {
+		_, err := os.Stat(mysqldSafeFile)
+		if err == nil {
+			logs.Println("[API_NODE]try to start local mysql server from '" + mysqldSafeFile + "' ...")
+			var mysqlCmd = exec.Command(mysqldSafeFile)
+			_ = mysqlCmd.Start()
+			break
+		}
+	}
+}