73 lines
1.6 KiB
Go
73 lines
1.6 KiB
Go
package postgres
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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/generator/internal/metadata"
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"github.com/go-jet/jet/generator/internal/template"
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"github.com/go-jet/jet/internal/utils"
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"github.com/go-jet/jet/postgres"
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"path"
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"strconv"
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)
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// DBConnection contains postgres 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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SslMode string
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Params string
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DBName string
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SchemaName 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) error {
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db, err := openConnection(dbConn)
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defer utils.DBClose(db)
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if err != nil {
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return err
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}
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fmt.Println("Retrieving schema information...")
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schemaInfo, err := metadata.GetSchemaInfo(db, dbConn.SchemaName, &metadata.PostgresQuerySet{})
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if err != nil {
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return err
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}
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genPath := path.Join(destDir, dbConn.DBName, dbConn.SchemaName)
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err = template.GenerateFiles(genPath, schemaInfo.TableInfos, schemaInfo.EnumInfos, postgres.Dialect)
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if err != nil {
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return err
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}
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return nil
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}
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func openConnection(dbConn DBConnection) (*sql.DB, error) {
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connectionString := fmt.Sprintf("host=%s port=%s user=%s password=%s dbname=%s sslmode=%s %s",
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dbConn.Host, strconv.Itoa(dbConn.Port), dbConn.User, dbConn.Password, dbConn.DBName, dbConn.SslMode, dbConn.Params)
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fmt.Println("Connecting to postgres database: " + connectionString)
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db, err := sql.Open("postgres", connectionString)
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if err != nil {
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return nil, err
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}
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err = db.Ping()
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if err != nil {
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return nil, err
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}
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return db, nil
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}
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