64 lines
1.6 KiB
Go
64 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/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/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, genTemplate ...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 schema information...")
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generatorTemplate := template.Default(postgres.Dialect)
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if len(genTemplate) > 0 {
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generatorTemplate = genTemplate[0]
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}
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schemaMetadata := metadata.GetSchema(db, &postgresQuerySet{}, dbConn.SchemaName)
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dirPath := path.Join(destDir, dbConn.DBName)
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template.ProcessSchema(dirPath, schemaMetadata, generatorTemplate)
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return
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}
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func openConnection(dbConn DBConnection) *sql.DB {
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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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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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