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mysql.go
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mysql.go
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package gorm_db_env_connector
import (
"gorm.io/driver/mysql"
"gorm.io/gorm"
"log"
)
type MySqlParams struct {
DbUrl string
DbSchema string
DbUsername string
DbPassword string
}
type MySqlEnv struct {
DbUrlEnvVar string
DbSchemaEnvVar string
DbUsernameEnvVar string
DbPasswordEnvVar string
DbUrlDefault string
DbSchemaDefault string
DbUsernameDefault string
DbPasswordDefault string
}
func (env *MySqlEnv) resolve() MySqlParams {
return MySqlParams{
DbUrl: resolveEnvOrDefault(env.DbUrlEnvVar, env.DbUrlDefault),
DbSchema: resolveEnvOrDefault(env.DbSchemaEnvVar, env.DbSchemaDefault),
DbUsername: resolveEnvOrDefault(env.DbUsernameEnvVar, env.DbUsernameDefault),
DbPassword: resolveEnvOrDefault(env.DbPasswordEnvVar, env.DbPasswordDefault),
}
}
func MySQLConnect(mysqlParams MySqlParams) *gorm.DB {
databaseName := mysqlParams.DbUrl + "/"+ mysqlParams.DbSchema
log.Println("Initializing connection to database " + databaseName)
dsn := mysqlParams.DbUsername + ":" + mysqlParams.DbPassword + "@tcp(" + mysqlParams.DbUrl + ")/" + mysqlParams.DbSchema + "?parseTime=true"
_db, err := gorm.Open(mysql.Open(dsn), &gorm.Config{})
if err != nil {
log.Fatal("Connection to database " + databaseName + " failed")
}
log.Println("Connection to database " + databaseName + " completed")
_ddb, err := _db.DB()
if err != nil {
panic("Setting connection pool failed")
}
_ddb.SetMaxIdleConns(10)
_ddb.SetMaxOpenConns(50)
return _db
}
func MySQLConnectEnv(mysqlEnv MySqlEnv) *gorm.DB {
return MySQLConnect(mysqlEnv.resolve())
}