340 lines
7.6 KiB
Go
340 lines
7.6 KiB
Go
package serv
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import (
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"context"
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"fmt"
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"os"
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"path"
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"path/filepath"
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"strconv"
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"strings"
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"time"
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"github.com/dosco/super-graph/migrate"
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"github.com/spf13/cobra"
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)
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var sampleMigration = `-- This is a sample migration.
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create table users(
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id serial primary key,
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fullname varchar not null,
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email varchar not null
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);
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---- create above / drop below ----
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drop table users;
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`
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var newMigrationText = `-- Write your migrate up statements here
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---- create above / drop below ----
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-- Write your migrate down statements here. If this migration is irreversible
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-- Then delete the separator line above.
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`
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func cmdDBSetup(cmd *cobra.Command, args []string) {
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cmdDBCreate(cmd, []string{})
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cmdDBMigrate(cmd, []string{"up"})
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sfile := path.Join(confPath, conf.SeedFile)
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_, err := os.Stat(sfile)
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if err == nil {
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cmdDBSeed(cmd, []string{})
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return
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}
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if os.IsNotExist(err) == false {
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logger.Fatal().Err(err).Msgf("unable to check if '%s' exists", sfile)
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}
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logger.Warn().Msgf("failed to read seed file '%s'", sfile)
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}
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func cmdDBCreate(cmd *cobra.Command, args []string) {
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var err error
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if conf, err = initConf(); err != nil {
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logger.Fatal().Err(err).Msg("failed to read config")
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}
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ctx := context.Background()
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conn, err := initDB(conf, false)
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if err != nil {
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logger.Fatal().Err(err).Msg("failed to connect to database")
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}
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defer conn.Close(ctx)
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sql := fmt.Sprintf("CREATE DATABASE %s", conf.DB.DBName)
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_, err = conn.Exec(ctx, sql)
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if err != nil {
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logger.Fatal().Err(err).Msg("failed to create database")
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}
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logger.Info().Msgf("created database '%s'", conf.DB.DBName)
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}
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func cmdDBDrop(cmd *cobra.Command, args []string) {
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var err error
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if conf, err = initConf(); err != nil {
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logger.Fatal().Err(err).Msg("failed to read config")
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}
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ctx := context.Background()
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conn, err := initDB(conf, false)
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if err != nil {
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logger.Fatal().Err(err).Msg("failed to connect to database")
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}
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defer conn.Close(ctx)
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sql := fmt.Sprintf(`DROP DATABASE IF EXISTS %s`, conf.DB.DBName)
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_, err = conn.Exec(ctx, sql)
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if err != nil {
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logger.Fatal().Err(err).Msg("failed to create database")
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}
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logger.Info().Msgf("dropped database '%s'", conf.DB.DBName)
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}
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func cmdDBNew(cmd *cobra.Command, args []string) {
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if len(args) != 1 {
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cmd.Help()
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os.Exit(1)
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}
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var err error
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if conf, err = initConf(); err != nil {
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logger.Fatal().Err(err).Msg("failed to read config")
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}
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name := args[0]
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m, err := migrate.FindMigrations(conf.MigrationsPath)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Error loading migrations:\n %v\n", err)
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os.Exit(1)
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}
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mname := fmt.Sprintf("%03d_%s.sql", len(m)+100, name)
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// Write new migration
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mpath := filepath.Join(conf.MigrationsPath, mname)
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mfile, err := os.OpenFile(mpath, os.O_CREATE|os.O_EXCL|os.O_WRONLY, 0666)
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(1)
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}
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defer mfile.Close()
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_, err = mfile.WriteString(newMigrationText)
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(1)
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}
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logger.Info().Msgf("created migration '%s'", mpath)
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}
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func cmdDBMigrate(cmd *cobra.Command, args []string) {
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var err error
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if len(args) == 0 {
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cmd.Help()
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os.Exit(1)
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}
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dest := args[0]
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if conf, err = initConf(); err != nil {
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logger.Fatal().Err(err).Msg("failed to read config")
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}
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conn, err := initDB(conf, true)
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if err != nil {
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logger.Fatal().Err(err).Msg("failed to connect to database")
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}
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defer conn.Close(context.Background())
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m, err := migrate.NewMigrator(conn, "schema_version")
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if err != nil {
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logger.Fatal().Err(err).Msg("failed to initializing migrator")
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}
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m.Data = getMigrationVars()
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err = m.LoadMigrations(conf.MigrationsPath)
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if err != nil {
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logger.Fatal().Err(err).Msg("failed to load migrations")
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}
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if len(m.Migrations) == 0 {
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logger.Fatal().Msg("No migrations found")
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}
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m.OnStart = func(sequence int32, name, direction, sql string) {
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logger.Info().Msgf("%s executing %s %s\n%s\n\n",
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time.Now().Format("2006-01-02 15:04:05"), name, direction, sql)
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}
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var currentVersion int32
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currentVersion, err = m.GetCurrentVersion()
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if err != nil {
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fmt.Fprintf(os.Stderr, "Unable to get current version:\n %v\n", err)
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os.Exit(1)
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}
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mustParseDestination := func(d string) int32 {
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var n int64
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n, err = strconv.ParseInt(d, 10, 32)
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if err != nil {
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logger.Fatal().Err(err).Msg("invalid destination")
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}
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return int32(n)
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}
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if dest == "up" {
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err = m.Migrate()
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} else if dest == "down" {
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err = m.MigrateTo(currentVersion - 1)
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} else if len(dest) >= 3 && dest[0:2] == "-+" {
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err = m.MigrateTo(currentVersion - mustParseDestination(dest[2:]))
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if err == nil {
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err = m.MigrateTo(currentVersion)
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}
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} else if len(dest) >= 2 && dest[0] == '-' {
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err = m.MigrateTo(currentVersion - mustParseDestination(dest[1:]))
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} else if len(dest) >= 2 && dest[0] == '+' {
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err = m.MigrateTo(currentVersion + mustParseDestination(dest[1:]))
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} else {
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cmd.Help()
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os.Exit(1)
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}
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if err != nil {
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logger.Info().Err(err).Send()
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// logger.Info().Err(err).Send()
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// if err, ok := err.(m.MigrationPgError); ok {
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// if err.Detail != "" {
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// logger.Info().Err(err).Msg(err.Detail)
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// }
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// if err.Position != 0 {
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// ele, err := ExtractErrorLine(err.Sql, int(err.Position))
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// if err != nil {
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// logger.Fatal().Err(err).Send()
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// }
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// prefix := fmt.Sprintf()
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// logger.Info().Msgf("line %d, %s%s", ele.LineNum, prefix, ele.Text)
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// }
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// }
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// os.Exit(1)
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}
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logger.Info().Msg("migration done")
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}
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func cmdDBStatus(cmd *cobra.Command, args []string) {
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var err error
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if conf, err = initConf(); err != nil {
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logger.Fatal().Err(err).Msg("failed to read config")
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}
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conn, err := initDB(conf, true)
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if err != nil {
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logger.Fatal().Err(err).Msg("failed to connect to database")
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}
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defer conn.Close(context.Background())
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m, err := migrate.NewMigrator(conn, "schema_version")
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if err != nil {
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logger.Fatal().Err(err).Msg("failed to initialize migrator")
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}
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m.Data = getMigrationVars()
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err = m.LoadMigrations(conf.MigrationsPath)
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if err != nil {
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logger.Fatal().Err(err).Msg("failed to load migrations")
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}
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if len(m.Migrations) == 0 {
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logger.Fatal().Msg("no migrations found")
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}
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mver, err := m.GetCurrentVersion()
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if err != nil {
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logger.Fatal().Err(err).Msg("failed to retrieve migration")
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}
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var status string
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behindCount := len(m.Migrations) - int(mver)
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if behindCount == 0 {
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status = "up to date"
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} else {
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status = "migration(s) pending"
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}
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fmt.Println("status: ", status)
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fmt.Printf("version: %d of %d\n", mver, len(m.Migrations))
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fmt.Println("host: ", conf.DB.Host)
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fmt.Println("database:", conf.DB.DBName)
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}
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type ErrorLineExtract struct {
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LineNum int // Line number starting with 1
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ColumnNum int // Column number starting with 1
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Text string // Text of the line without a new line character.
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}
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// ExtractErrorLine takes source and character position extracts the line
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// number, column number, and the line of text.
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//
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// The first character is position 1.
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func ExtractErrorLine(source string, position int) (ErrorLineExtract, error) {
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ele := ErrorLineExtract{LineNum: 1}
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if position > len(source) {
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return ele, fmt.Errorf("position (%d) is greater than source length (%d)", position, len(source))
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}
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lines := strings.SplitAfter(source, "\n")
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for _, ele.Text = range lines {
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if position-len(ele.Text) < 1 {
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ele.ColumnNum = position
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break
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}
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ele.LineNum += 1
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position -= len(ele.Text)
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}
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ele.Text = strings.TrimSuffix(ele.Text, "\n")
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return ele, nil
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}
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func getMigrationVars() map[string]interface{} {
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return map[string]interface{}{
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"app_name": strings.Title(conf.AppName),
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"app_name_slug": strings.ToLower(strings.Replace(conf.AppName, " ", "_", -1)),
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"env": strings.ToLower(os.Getenv("GO_ENV")),
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}
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}
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