99 lines
3 KiB
Go
99 lines
3 KiB
Go
package utils
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import (
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"fmt"
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"time"
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"github.com/go-redis/redis"
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"github.com/sirupsen/logrus"
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"gorm.io/driver/mysql"
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"gorm.io/driver/postgres"
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"gorm.io/gorm"
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"gorm.io/gorm/logger"
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)
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//DB SQL database as global var
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var db *gorm.DB
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//SQLDatabase Initialize the (My)SQL Database
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//Requires a conf struct
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func SQLDatabase(conf *Conf) {
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logrus.WithFields(logrus.Fields{"database": conf.Database.Db, "driver": conf.Database.Type}).Infof("SQL : Connection to DB")
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//Connect to the Database
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var err error
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var gormLogLevel logger.LogLevel
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//Set GORM log level based on conf AppMode
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if conf.AppMode != "production" {
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gormLogLevel = logger.Info
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} else {
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gormLogLevel = logger.Silent
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}
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if conf.Database.Type == "postgresql" {
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dsn := fmt.Sprintf("user=%s password=%s host=%s port=%s database=%s sslmode=disable", conf.Database.Username, conf.Database.Password, conf.Database.IP, conf.Database.Port, conf.Database.Db)
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db, err = gorm.Open(postgres.Open(dsn), &gorm.Config{
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Logger: logger.Default.LogMode(gormLogLevel),
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})
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} else {
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dsn := fmt.Sprintf("%s:%s@tcp(%s:%s)/%s?charset=utf8mb4&parseTime=True&loc=Local", conf.Database.Username, conf.Database.Password, conf.Database.IP, conf.Database.Port, conf.Database.Db)
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db, err = gorm.Open(mysql.Open(dsn), &gorm.Config{
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Logger: logger.Default.LogMode(gormLogLevel),
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})
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}
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CheckErr(err)
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}
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//SQLMigrate : Launch the database migration (creation of tables)
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func SQLMigrate() {
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logrus.Info("SQL : Database migration launched")
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db.AutoMigrate(&Record{})
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}
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//Check for a record in the SQL database
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func sqlCheckForRecord(redisKey string, dKey string, entry Record) (Record, bool) {
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db.Where("fqdn = ? AND type = ?", dKey, entry.Qtype).First(&entry)
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logrus.Debugf("SQL : %s => %s", entry.Fqdn, entry.Content) //log the result
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if entry.Content != "" { //If Record content not empty
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//Cache the request in Redis if any result
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logrus.Debugf("REDIS : Set entry for %s", redisKey)
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_ = redisSet(redisDb, redisKey, 30*time.Second, entry) //Set it in the Redis database for 30sec
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return entry, false
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}
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//Else return 1 for err
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return entry, true
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}
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//Check for a wildcard record in the SQL database
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func sqlCheckForReverse6Wildcard(redisKey string, dKey string, entry Record) (Record, error) {
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returnedEntry := entry
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rows, err := db.Table("records").Select("id", "content", "fqdn").Where("fqdn LIKE ?", "*%.ip6.arpa.").Rows()
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DbgErr(err) //Check for empty row or non important error
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//For each result check if it match the reverse IP
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for rows.Next() {
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err = rows.Scan(&returnedEntry.ID, &returnedEntry.Content, &returnedEntry.Fqdn)
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CheckErr(err)
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//Check if the record is matching the reversed IP
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if checkReverse6(entry, returnedEntry) {
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logrus.Debug("REVERSE : Correct wildcard reverse.")
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//Cache the request in Redis if any result
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_ = redisSet(redisDb, redisKey, 10*time.Second, returnedEntry)
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return returnedEntry, err
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}
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logrus.Debug("REVERSE : WRONG wildcard reverse .")
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}
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return entry, redis.Nil
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}
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