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Commit 07012e3f authored by Steven's avatar Steven
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chore: remove unused files

parent 1b6685d7
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store/db/sqlite/migrator.go deleted 100644 → 0
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package sqlite
import (
"context"
"embed"
"fmt"
"io/fs"
"os"
"regexp"
"sort"
"time"
"github.com/pkg/errors"
"github.com/usememos/memos/server/version"
"github.com/usememos/memos/store"
)
//go:embed migration
var migrationFS embed.FS
//go:embed seed
var seedFS embed.FS
// Migrate applies the latest schema to the database.
func (d *DB) Migrate(ctx context.Context) error {
currentVersion := version.GetCurrentVersion(d.profile.Mode)
if d.profile.Mode == "prod" {
_, err := os.Stat(d.profile.DSN)
if err != nil {
// If db file not exists, we should create a new one with latest schema.
if errors.Is(err, os.ErrNotExist) {
if err := d.applyLatestSchema(ctx); err != nil {
return errors.Wrap(err, "failed to apply latest schema")
}
// Upsert the newest version to migration_history.
if _, err := d.UpsertMigrationHistory(ctx, &store.UpsertMigrationHistory{
Version: currentVersion,
}); err != nil {
return errors.Wrap(err, "failed to upsert migration history")
}
} else {
return errors.Wrap(err, "failed to get db file stat")
}
} else {
// If db file exists, we should check if we need to migrate the database.
migrationHistoryList, err := d.FindMigrationHistoryList(ctx, &store.FindMigrationHistory{})
if err != nil {
return errors.Wrap(err, "failed to find migration history")
}
// If no migration history, we should apply the latest version migration and upsert the migration history.
if len(migrationHistoryList) == 0 {
minorVersion := version.GetMinorVersion(currentVersion)
if err := d.applyMigrationForMinorVersion(ctx, minorVersion); err != nil {
return errors.Wrapf(err, "failed to apply version %s migration", minorVersion)
}
_, err := d.UpsertMigrationHistory(ctx, &store.UpsertMigrationHistory{
Version: currentVersion,
})
if err != nil {
return errors.Wrap(err, "failed to upsert migration history")
}
return nil
}
migrationHistoryVersionList := []string{}
for _, migrationHistory := range migrationHistoryList {
migrationHistoryVersionList = append(migrationHistoryVersionList, migrationHistory.Version)
}
sort.Sort(version.SortVersion(migrationHistoryVersionList))
latestMigrationHistoryVersion := migrationHistoryVersionList[len(migrationHistoryVersionList)-1]
if version.IsVersionGreaterThan(version.GetSchemaVersion(currentVersion), latestMigrationHistoryVersion) {
minorVersionList := getMinorVersionList()
// Backup the raw database file before migration.
rawBytes, err := os.ReadFile(d.profile.DSN)
if err != nil {
return errors.Wrap(err, "failed to read raw database file")
}
backupDBFilePath := fmt.Sprintf("%s/memos_%s_%d_backup.db", d.profile.Data, d.profile.Version, time.Now().Unix())
if err := os.WriteFile(backupDBFilePath, rawBytes, 0644); err != nil {
return errors.Wrap(err, "failed to write raw database file")
}
fmt.Println("succeed to copy a backup database file")
fmt.Println("start migrate")
for _, minorVersion := range minorVersionList {
normalizedVersion := minorVersion + ".0"
if version.IsVersionGreaterThan(normalizedVersion, latestMigrationHistoryVersion) && version.IsVersionGreaterOrEqualThan(currentVersion, normalizedVersion) {
fmt.Println("applying migration for", normalizedVersion)
if err := d.applyMigrationForMinorVersion(ctx, minorVersion); err != nil {
return errors.Wrap(err, "failed to apply minor version migration")
}
}
}
fmt.Println("end migrate")
// Remove the created backup db file after migrate succeed.
if err := os.Remove(backupDBFilePath); err != nil {
fmt.Printf("Failed to remove temp database file, err %v", err)
}
}
}
} else {
// In non-prod mode, we should always migrate the database.
if _, err := os.Stat(d.profile.DSN); errors.Is(err, os.ErrNotExist) {
if err := d.applyLatestSchema(ctx); err != nil {
return errors.Wrap(err, "failed to apply latest schema")
}
// In demo mode, we should seed the database.
if d.profile.Mode == "demo" {
if err := d.seed(ctx); err != nil {
return errors.Wrap(err, "failed to seed")
}
}
}
}
return nil
}
const (
latestSchemaFileName = "LATEST__SCHEMA.sql"
)
func (d *DB) applyLatestSchema(ctx context.Context) error {
schemaMode := "dev"
if d.profile.Mode == "prod" {
schemaMode = "prod"
}
latestSchemaPath := fmt.Sprintf("migration/%s/%s", schemaMode, latestSchemaFileName)
buf, err := migrationFS.ReadFile(latestSchemaPath)
if err != nil {
return errors.Wrapf(err, "failed to read latest schema %q", latestSchemaPath)
}
stmt := string(buf)
if err := d.execute(ctx, stmt); err != nil {
return errors.Wrapf(err, "migrate error: %s", stmt)
}
return nil
}
func (d *DB) applyMigrationForMinorVersion(ctx context.Context, minorVersion string) error {
filenames, err := fs.Glob(migrationFS, fmt.Sprintf("%s/%s/*.sql", "migration/prod", minorVersion))
if err != nil {
return errors.Wrap(err, "failed to read ddl files")
}
sort.Strings(filenames)
migrationStmt := ""
// Loop over all migration files and execute them in order.
for _, filename := range filenames {
buf, err := migrationFS.ReadFile(filename)
if err != nil {
return errors.Wrapf(err, "failed to read minor version migration file, filename=%s", filename)
}
stmt := string(buf)
migrationStmt += stmt
if err := d.execute(ctx, stmt); err != nil {
return errors.Wrapf(err, "migrate error: %s", stmt)
}
}
// Upsert the newest version to migration_history.
version := minorVersion + ".0"
if _, err = d.UpsertMigrationHistory(ctx, &store.UpsertMigrationHistory{
Version: version,
}); err != nil {
return errors.Wrapf(err, "failed to upsert migration history with version: %s", version)
}
return nil
}
func (d *DB) seed(ctx context.Context) error {
filenames, err := fs.Glob(seedFS, fmt.Sprintf("%s/*.sql", "seed"))
if err != nil {
return errors.Wrap(err, "failed to read seed files")
}
sort.Strings(filenames)
// Loop over all seed files and execute them in order.
for _, filename := range filenames {
buf, err := seedFS.ReadFile(filename)
if err != nil {
return errors.Wrapf(err, "failed to read seed file, filename=%s", filename)
}
stmt := string(buf)
if err := d.execute(ctx, stmt); err != nil {
return errors.Wrapf(err, "seed error: %s", stmt)
}
}
return nil
}
// execute runs a single SQL statement within a transaction.
func (d *DB) execute(ctx context.Context, stmt string) error {
tx, err := d.db.Begin()
if err != nil {
return err
}
defer tx.Rollback()
if _, err := tx.ExecContext(ctx, stmt); err != nil {
return errors.Wrap(err, "failed to execute statement")
}
return tx.Commit()
}
// minorDirRegexp is a regular expression for minor version directory.
var minorDirRegexp = regexp.MustCompile(`^migration/prod/[0-9]+\.[0-9]+$`)
func getMinorVersionList() []string {
minorVersionList := []string{}
if err := fs.WalkDir(migrationFS, "migration", func(path string, file fs.DirEntry, err error) error {
if err != nil {
return err
}
if file.IsDir() && minorDirRegexp.MatchString(path) {
minorVersionList = append(minorVersionList, file.Name())
}
return nil
}); err != nil {
panic(err)
}
sort.Sort(version.SortVersion(minorVersionList))
return minorVersionList
}
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