forked from go-jet/jet
/
postgres_generator.go
62 lines (48 loc) · 1.49 KB
/
postgres_generator.go
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package postgres
import (
"database/sql"
"fmt"
"github.com/go-jet/jet/generator/internal/metadata"
"github.com/go-jet/jet/generator/internal/template"
"github.com/go-jet/jet/internal/utils"
"github.com/go-jet/jet/postgres"
"path"
"strconv"
)
// DBConnection contains postgres connection details
type DBConnection struct {
Host string
Port int
User string
Password string
SslMode string
Params string
DBName string
SchemaName string
}
// Generate generates jet files at destination dir from database connection details
func Generate(destDir string, dbConn DBConnection) (err error) {
defer utils.ErrorCatch(&err)
db, err := openConnection(dbConn)
utils.PanicOnError(err)
defer utils.DBClose(db)
fmt.Println("Retrieving schema information...")
schemaInfo := metadata.GetSchemaMetaData(db, dbConn.SchemaName, &postgresQuerySet{})
genPath := path.Join(destDir, dbConn.DBName, dbConn.SchemaName)
template.GenerateFiles(genPath, schemaInfo, postgres.Dialect)
return
}
func openConnection(dbConn DBConnection) (*sql.DB, error) {
connectionString := fmt.Sprintf("host=%s port=%s user=%s password=%s dbname=%s sslmode=%s %s",
dbConn.Host, strconv.Itoa(dbConn.Port), dbConn.User, dbConn.Password, dbConn.DBName, dbConn.SslMode, dbConn.Params)
fmt.Println("Connecting to postgres database: " + connectionString)
db, err := sql.Open("postgres", connectionString)
if err != nil {
return nil, err
}
err = db.Ping()
if err != nil {
return nil, err
}
return db, nil
}