mirror of https://github.com/pressly/goose.git
133 lines
3.2 KiB
Go
133 lines
3.2 KiB
Go
package goose
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import (
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"database/sql"
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"fmt"
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"regexp"
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"time"
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)
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// Run a migration specified in raw SQL.
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//
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// Sections of the script can be annotated with a special comment,
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// starting with "-- +goose" to specify whether the section should
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// be applied during an Up or Down migration
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//
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// All statements following an Up or Down directive are grouped together
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// until another direction directive is found.
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func runSQLMigration(db *sql.DB, statements []string, useTx bool, v int64, direction bool, noVersioning bool) error {
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if useTx {
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// TRANSACTION.
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verboseInfo("Begin transaction")
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tx, err := db.Begin()
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if err != nil {
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return fmt.Errorf("failed to begin transaction: %w", err)
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}
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for _, query := range statements {
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verboseInfo("Executing statement: %s\n", clearStatement(query))
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if err = execQuery(tx.Exec, query); err != nil {
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verboseInfo("Rollback transaction")
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tx.Rollback()
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return fmt.Errorf("failed to execute SQL query %q: %w", clearStatement(query), err)
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}
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}
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if !noVersioning {
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if direction {
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if err := execQuery(tx.Exec, GetDialect().insertVersionSQL(), v, direction); err != nil {
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verboseInfo("Rollback transaction")
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tx.Rollback()
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return fmt.Errorf("failed to insert new goose version: %w", err)
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}
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} else {
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if err := execQuery(tx.Exec, GetDialect().deleteVersionSQL(), v); err != nil {
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verboseInfo("Rollback transaction")
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tx.Rollback()
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return fmt.Errorf("failed to delete goose version: %w", err)
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}
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}
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}
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verboseInfo("Commit transaction")
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if err := tx.Commit(); err != nil {
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return fmt.Errorf("failed to commit transaction: %w", err)
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}
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return nil
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}
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// NO TRANSACTION.
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for _, query := range statements {
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verboseInfo("Executing statement: %s", clearStatement(query))
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if err := execQuery(db.Exec, query); err != nil {
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return fmt.Errorf("failed to execute SQL query %q: %w", clearStatement(query), err)
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}
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}
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if !noVersioning {
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if direction {
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if err := execQuery(db.Exec, GetDialect().insertVersionSQL(), v, direction); err != nil {
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return fmt.Errorf("failed to insert new goose version: %w", err)
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}
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} else {
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if err := execQuery(db.Exec, GetDialect().deleteVersionSQL(), v); err != nil {
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return fmt.Errorf("failed to delete goose version: %w", err)
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}
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}
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}
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return nil
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}
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func execQuery(fn func(string, ...interface{}) (sql.Result, error), query string, args ...interface{}) error {
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if !verbose {
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_, err := fn(query, args...)
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return err
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}
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ch := make(chan error)
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go func() {
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_, err := fn(query, args...)
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ch <- err
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}()
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t := time.Now()
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for {
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select {
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case err := <-ch:
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return err
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case <-time.Tick(time.Minute):
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verboseInfo("Executing statement still in progress for %v", time.Since(t).Round(time.Second))
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}
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}
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}
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const (
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grayColor = "\033[90m"
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resetColor = "\033[00m"
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)
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func verboseInfo(s string, args ...interface{}) {
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if verbose {
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if noColor {
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log.Printf(s, args...)
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} else {
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log.Printf(grayColor+s+resetColor, args...)
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}
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}
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}
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var (
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matchSQLComments = regexp.MustCompile(`(?m)^--.*$[\r\n]*`)
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matchEmptyEOL = regexp.MustCompile(`(?m)^$[\r\n]*`) // TODO: Duplicate
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)
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func clearStatement(s string) string {
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s = matchSQLComments.ReplaceAllString(s, ``)
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return matchEmptyEOL.ReplaceAllString(s, ``)
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}
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