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db.go
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db.go
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package funcs
import (
"fmt"
_ "github.com/go-sql-driver/mysql"
"github.com/go-xorm/core"
"github.com/go-xorm/xorm"
"log"
"math/rand"
"strconv"
"strings"
"time"
)
var (
mysqlEngine *xorm.Engine
monitorMysqlEngine *xorm.Engine
databaseSelect string
hostIp string
maxUnitNum int
concurrentInsertNum int
retryWaitSecond int
jobTimeout int
)
func InitDbEngine(databaseName string) (err error) {
if databaseName == "" {
databaseName = "mysql"
}
connectStr := fmt.Sprintf("%s:%s@%s(%s:%s)/%s?collation=utf8mb4_unicode_ci&allowNativePasswords=true",
Config().Mysql.User, Config().Mysql.Password, "tcp", Config().Mysql.Server, Config().Mysql.Port, databaseName)
mysqlEngine, err = xorm.NewEngine("mysql", connectStr)
if err != nil {
log.Printf("init mysql fail with connect: %s error: %v \n", connectStr, err)
} else {
mysqlEngine.SetMaxIdleConns(Config().Mysql.MaxIdle)
mysqlEngine.SetMaxOpenConns(Config().Mysql.MaxOpen)
mysqlEngine.SetConnMaxLifetime(time.Duration(Config().Mysql.Timeout) * time.Second)
mysqlEngine.Charset("utf8")
// 使用驼峰式映射
mysqlEngine.SetMapper(core.SnakeMapper{})
if !strings.HasPrefix(databaseName, Config().Mysql.DatabasePrefix) {
err = ChangeDatabase("")
} else {
databaseSelect = databaseName
log.Printf("init mysql %s success \n", databaseSelect)
err = initJobRecordTable()
}
}
return err
}
func ResetDbEngine() {
err := mysqlEngine.Close()
if err != nil {
log.Printf("close mysql engine fail,%s \n", err.Error())
}
time.Sleep(30 * time.Second)
databaseName := Config().Mysql.DatabasePrefix + time.Now().Format("2006")
connectStr := fmt.Sprintf("%s:%s@%s(%s:%s)/%s?collation=utf8mb4_unicode_ci&allowNativePasswords=true",
Config().Mysql.User, Config().Mysql.Password, "tcp", Config().Mysql.Server, Config().Mysql.Port, databaseName)
mysqlEngine, err = xorm.NewEngine("mysql", connectStr)
if err != nil {
log.Printf("init mysql fail with connect: %s error: %v \n", connectStr, err)
} else {
mysqlEngine.SetMaxIdleConns(Config().Mysql.MaxIdle)
mysqlEngine.SetMaxOpenConns(Config().Mysql.MaxOpen)
mysqlEngine.SetConnMaxLifetime(time.Duration(Config().Mysql.Timeout) * time.Second)
mysqlEngine.Charset("utf8")
// 使用驼峰式映射
mysqlEngine.SetMapper(core.SnakeMapper{})
}
log.Println("Reset db engine done! ")
}
func InitMonitorDbEngine() (err error) {
connectStr := fmt.Sprintf("%s:%s@%s(%s:%s)/%s?collation=utf8mb4_unicode_ci&allowNativePasswords=true",
Config().Monitor.Mysql.User, Config().Monitor.Mysql.Password, "tcp", Config().Monitor.Mysql.Server, Config().Monitor.Mysql.Port, Config().Monitor.Mysql.DataBase)
monitorMysqlEngine, err = xorm.NewEngine("mysql", connectStr)
if err != nil {
log.Printf("init monitor mysql fail with connect: %s error: %v \n", connectStr, err)
} else {
monitorMysqlEngine.SetMaxIdleConns(Config().Monitor.Mysql.MaxIdle)
monitorMysqlEngine.SetMaxOpenConns(Config().Monitor.Mysql.MaxOpen)
monitorMysqlEngine.SetConnMaxLifetime(time.Duration(Config().Monitor.Mysql.Timeout) * time.Second)
monitorMysqlEngine.Charset("utf8")
// 使用驼峰式映射
monitorMysqlEngine.SetMapper(core.SnakeMapper{})
log.Println("init monitor mysql success ")
}
return err
}
func insertMysql(rows []*ArchiveTable, tableName string) error {
startTime := time.Now()
log.Printf("start insert mysql table:%s,row num:%d,concurrentInsertNum:%d \n", tableName, len(rows), concurrentInsertNum)
var sqlList []string
var rowCountList []int
tmpCount := 0
sqlString := fmt.Sprintf("INSERT INTO %s(endpoint,metric,tags,unix_time,`avg`,`min`,`max`,`p95`,`sum`,`create_time`) VALUES ", tableName)
for i, v := range rows {
tmpCount += 1
sqlString += fmt.Sprintf("('%s','%s','%s',%d,%.3f,%.3f,%.3f,%.3f,%.3f,'%s')", strings.ReplaceAll(v.Endpoint, "'", ""), strings.ReplaceAll(v.Metric, "'", ""), strings.ReplaceAll(v.Tags, "'", ""), v.UnixTime, v.Avg, v.Min, v.Max, v.P95, v.Sum, transUnixTime(v.UnixTime))
if (i+1)%concurrentInsertNum == 0 || i == len(rows)-1 {
rowCountList = append(rowCountList, tmpCount)
tmpCount = 0
sqlList = append(sqlList, sqlString)
sqlString = fmt.Sprintf("INSERT INTO %s(endpoint,metric,tags,unix_time,`avg`,`min`,`max`,`p95`,`sum`,`create_time`) VALUES ", tableName)
} else {
sqlString += ","
}
}
gErrMessage := ""
for sqlIndex, v := range sqlList {
var tmpErr error
for i := 0; i < 3; i++ {
//log.Printf("start try %d to insert mysql,data num:%d \n", i+1, rowCountList[sqlIndex])
_, err := mysqlEngine.Exec(v)
if err != nil {
tmpErr = err
} else {
tmpErr = nil
break
}
if i < 2 {
time.Sleep(time.Duration(retryWaitSecond) * time.Second)
}
}
if tmpErr != nil {
log.Printf("Exec sql error:%s sql:%s \n", tmpErr.Error(), v)
tmpErrorString := tmpErr.Error()
if len(tmpErrorString) > 200 {
tmpErrorString = tmpErrorString[:200]
}
gErrMessage += fmt.Sprintf("fail with rows length:%d error:%s \n", rowCountList[sqlIndex], tmpErrorString)
}
}
if gErrMessage == "" {
log.Printf("done insert mysql table:%s,row num:%d,use time:%.3f s \n", tableName, len(rows), time.Now().Sub(startTime).Seconds())
return nil
} else {
return fmt.Errorf(gErrMessage)
}
}
func createTable(start int64, isFiveArchive bool) (err error, tableName string) {
tableName = fmt.Sprintf("archive_%s", time.Unix(start, 0).Format("2006_01_02"))
if isFiveArchive {
tableName = tableName + "_5min"
}
err = ChangeDatabase(time.Unix(start, 0).Format("2006"))
if err != nil {
return err, tableName
}
if checkTableExists(tableName) {
return nil, tableName
}
tableDate := time.Unix(start, 0).Format("2006_01_02")
if isFiveArchive {
tableDate = tableDate + "_5m"
}
createSql := fmt.Sprintf("CREATE TABLE IF NOT EXISTS `%s` (`id` int(11) unsigned NOT NULL AUTO_INCREMENT PRIMARY KEY,`endpoint` VARCHAR(255) NOT NULL,`metric` VARCHAR(255) NOT NULL,`tags` VARCHAR(500) NOT NULL DEFAULT '',`unix_time` INT(11) NOT NULL,`avg` DOUBLE NOT NULL DEFAULT 0,`min` DOUBLE NOT NULL DEFAULT 0,`max` DOUBLE NOT NULL DEFAULT 0,`p95` DOUBLE NOT NULL DEFAULT 0,`sum` DOUBLE NOT NULL DEFAULT 0,`create_time` VARCHAR(64) DEFAULT NULL,INDEX idx_%s_endpoint (`endpoint`),INDEX idx_%s_metric (`metric`)) ENGINE=INNODB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8", tableName, tableDate, tableDate)
_, err = mysqlEngine.Exec(createSql)
if err != nil {
log.Printf("create table %s error: %v \n", tableName, err)
}
return err, tableName
}
func checkTableExists(tableName string) bool {
var tables []*PrometheusArchiveTables
err := mysqlEngine.SQL(fmt.Sprintf("SELECT `TABLE_NAME` FROM information_schema.`TABLES` WHERE TABLE_SCHEMA='%s'", databaseSelect)).Find(&tables)
if err != nil {
log.Printf("show tables error: %v \n", err)
return false
}
for _, v := range tables {
if v.TableName == tableName {
return true
}
}
return false
}
func ChangeDatabase(year string) error {
if year == "" {
year = time.Now().Format("2006")
}
databaseName := Config().Mysql.DatabasePrefix + year
if databaseName == databaseSelect {
return nil
}
_, err := mysqlEngine.Exec(fmt.Sprintf("CREATE DATABASE IF NOT EXISTS `%s`", databaseName))
if err != nil {
log.Printf("create database error -> %v \n", err)
return err
}
err = InitDbEngine(databaseName)
return err
}
func getArchiveTableCountData(tableName string) (err error, result []*ArchiveCountQueryObj) {
err = mysqlEngine.SQL(fmt.Sprintf("SELECT endpoint,metric,COUNT(1) AS num FROM %s GROUP BY endpoint,metric", tableName)).Find(&result)
return err, result
}
func archiveOneToFive(oldTable, newTable, endpoint, metric string) error {
var oldTableData []*ArchiveTable
var newTableData []*ArchiveTable
err := mysqlEngine.SQL(fmt.Sprintf("SELECT tags,unix_time,`avg`,`min`,`max`,`p95`,`sum` FROM %s WHERE endpoint='%s' AND metric='%s' ORDER BY tags,unix_time", oldTable, endpoint, metric)).Find(&oldTableData)
if err != nil {
return err
}
if len(oldTableData) == 0 {
return fmt.Errorf("table:%s endpoint:%s metric:%s empty data", oldTable, endpoint, metric)
}
var tmpRowObj ArchiveFiveRowObj
tmpCountIndex := 0
for i, v := range oldTableData {
if v.Tags != tmpRowObj.Tags {
if tmpRowObj.UnixTime > 0 {
newArchiveRowData := tmpRowObj.CalcArchiveTable()
newTableData = append(newTableData, &newArchiveRowData)
}
tmpCountIndex = 0
}
if tmpCountIndex == 0 {
tmpRowObj = ArchiveFiveRowObj{Endpoint: endpoint, Metric: metric, Tags: v.Tags, UnixTime: v.UnixTime, Avg: []float64{}, Min: []float64{}, Max: []float64{}, P95: []float64{}, Sum: []float64{}}
}
tmpCountIndex += 1
tmpRowObj.Avg = append(tmpRowObj.Avg, v.Avg)
tmpRowObj.Min = append(tmpRowObj.Min, v.Min)
tmpRowObj.Max = append(tmpRowObj.Max, v.Max)
tmpRowObj.P95 = append(tmpRowObj.P95, v.P95)
tmpRowObj.Sum = append(tmpRowObj.Sum, v.Sum)
if tmpCountIndex == 5 || i == len(oldTableData)-1 {
newArchiveRowData := tmpRowObj.CalcArchiveTable()
newTableData = append(newTableData, &newArchiveRowData)
tmpCountIndex = 0
}
}
err = insertMysql(newTableData, newTable)
return err
}
func renameFiveToOne(oldTable, newTable string) error {
var err error
_, err = mysqlEngine.Exec(fmt.Sprintf("drop table %s", oldTable))
if err != nil {
return err
}
_, err = mysqlEngine.Exec(fmt.Sprintf("ALTER TABLE %s RENAME `%s`", newTable, oldTable))
return err
}
func initJobRecordTable() error {
_, err := mysqlEngine.Exec("CREATE TABLE IF NOT EXISTS `job_record` (`id` INT(11) UNSIGNED NOT NULL AUTO_INCREMENT,`host_ip` VARCHAR(255) NOT NULL,`update_at` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, PRIMARY KEY (`id`)) ENGINE=INNODB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8")
if err != nil {
err = fmt.Errorf("init job_record table error: %v", err)
}
return err
}
func checkJobState() bool {
ipInt, _ := strconv.Atoi(strings.Replace(hostIp, ".", "", -1))
rand.Seed(time.Now().UnixNano() + int64(ipInt))
waitSecond := rand.Intn(100)
log.Printf("host:%s run wait job %d second...\n", hostIp, waitSecond)
time.Sleep(time.Duration(waitSecond) * time.Second)
var jobTables []*JobRecordTable
mysqlEngine.SQL(fmt.Sprintf("SELECT * FROM job_record WHERE update_at>'%s'", time.Unix(time.Now().Unix()-120, 0).Format("2006-01-02 15:04:05"))).Find(&jobTables)
if len(jobTables) > 0 {
return false
}
_, err := mysqlEngine.Exec(fmt.Sprintf("INSERT INTO job_record(host_ip,update_at) VALUE ('%s','%s')", hostIp, time.Now().Format("2006-01-02 15:04:05")))
if err != nil {
log.Printf("update job_record table with host:%s error: %v \n", hostIp, err)
}
return true
}
func transUnixTime(input int64) (output string) {
output = time.Unix(input, 0).Format("2006-01-02 15:04:05")
return
}