58 lines
1.5 KiB
Go
58 lines
1.5 KiB
Go
package mysql
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import (
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"database/sql"
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"fmt"
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"github.com/go-jet/jet/v2/generator/metadata"
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"github.com/go-jet/jet/v2/generator/template"
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"github.com/go-jet/jet/v2/internal/utils"
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"github.com/go-jet/jet/v2/internal/utils/throw"
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"github.com/go-jet/jet/v2/mysql"
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)
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// DBConnection contains MySQL connection details
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type DBConnection struct {
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Host string
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Port int
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User string
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Password string
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Params string
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DBName string
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}
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// Generate generates jet files at destination dir from database connection details
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func Generate(destDir string, dbConn DBConnection, generatorTemplate ...template.Template) (err error) {
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defer utils.ErrorCatch(&err)
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db := openConnection(dbConn)
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defer utils.DBClose(db)
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fmt.Println("Retrieving database information...")
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// No schemas in MySQL
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schemaMetaData := metadata.GetSchema(db, &mySqlQuerySet{}, dbConn.DBName)
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genTemplate := template.Default(mysql.Dialect)
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if len(generatorTemplate) > 0 {
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genTemplate = generatorTemplate[0]
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}
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template.ProcessSchema(destDir, schemaMetaData, genTemplate)
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return nil
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}
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func openConnection(dbConn DBConnection) *sql.DB {
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var connectionString = fmt.Sprintf("%s:%s@tcp(%s:%d)/%s", dbConn.User, dbConn.Password, dbConn.Host, dbConn.Port, dbConn.DBName)
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if dbConn.Params != "" {
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connectionString += "?" + dbConn.Params
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}
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fmt.Println("Connecting to MySQL database: " + connectionString)
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db, err := sql.Open("mysql", connectionString)
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throw.OnError(err)
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err = db.Ping()
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throw.OnError(err)
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return db
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}
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