124 lines
3.4 KiB
Go
124 lines
3.4 KiB
Go
package migration_test
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import (
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"context"
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"errors"
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"fmt"
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"os"
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"testing"
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"time"
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"github.com/influxdata/influxdb/v2/bolt"
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"github.com/influxdata/influxdb/v2/inmem"
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"github.com/influxdata/influxdb/v2/kv"
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"github.com/influxdata/influxdb/v2/kv/migration"
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"github.com/influxdata/influxdb/v2/kv/migration/all"
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influxdbtesting "github.com/influxdata/influxdb/v2/testing"
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"github.com/stretchr/testify/require"
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"go.uber.org/zap"
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"go.uber.org/zap/zaptest"
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)
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func newMigrator(t *testing.T, logger *zap.Logger, store kv.SchemaStore, now influxdbtesting.NowFunc) *migration.Migrator {
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migrator, err := migration.NewMigrator(logger, store)
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if err != nil {
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t.Fatal(err)
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}
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migration.MigratorSetNow(migrator, now)
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return migrator
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}
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func Test_Inmem_Migrator(t *testing.T) {
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influxdbtesting.Migrator(t, inmem.NewKVStore(), newMigrator)
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}
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func Test_Bolt_Migrator(t *testing.T) {
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store, closeBolt, err := newTestBoltStoreWithoutMigrations(t)
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if err != nil {
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t.Fatalf("failed to create new kv store: %v", err)
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}
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defer closeBolt()
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influxdbtesting.Migrator(t, store, newMigrator)
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}
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func Test_Bolt_MigratorWithBackup(t *testing.T) {
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store, closeBolt, err := newTestBoltStoreWithoutMigrations(t)
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require.NoError(t, err)
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defer closeBolt()
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ctx := context.Background()
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migrator := newMigrator(t, zaptest.NewLogger(t), store, time.Now)
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backupPath := fmt.Sprintf("%s.bak", store.DB().Path())
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migrator.SetBackupPath(backupPath)
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// Run the first migration.
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migrator.AddMigrations(all.Migration0001_InitialMigration)
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require.NoError(t, migrator.Up(ctx))
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// List of applied migrations should now have length 1.
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ms, err := migrator.List(ctx)
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require.NoError(t, err)
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require.Equal(t, 1, len(ms))
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// Backup file shouldn't exist because there was no previous state to back up.
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_, err = os.Stat(backupPath)
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require.True(t, os.IsNotExist(err))
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// Run a few more migrations.
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migrator.AddMigrations(all.Migrations[1:5]...)
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require.NoError(t, migrator.Up(ctx))
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// List of applied migrations should now have length 5.
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ms, err = migrator.List(ctx)
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require.NoError(t, err)
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require.Equal(t, 5, len(ms))
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// Backup file should now exist.
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_, err = os.Stat(backupPath)
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require.NoError(t, err)
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// Open a 2nd store using the backup file.
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backupStore := bolt.NewKVStore(zaptest.NewLogger(t), backupPath, bolt.WithNoSync)
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require.NoError(t, backupStore.Open(ctx))
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defer backupStore.Close()
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// List of applied migrations in the backup should be 1.
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backupMigrator := newMigrator(t, zaptest.NewLogger(t), backupStore, time.Now)
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backupMigrator.AddMigrations(all.Migration0001_InitialMigration)
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backupMs, err := backupMigrator.List(ctx)
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require.NoError(t, err)
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require.Equal(t, 1, len(backupMs))
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// Run the other migrations on the backup.
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backupMigrator.AddMigrations(all.Migrations[1:5]...)
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require.NoError(t, backupMigrator.Up(ctx))
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// List of applied migrations in the backup should be 5.
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backupMs, err = backupMigrator.List(ctx)
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require.NoError(t, err)
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require.Equal(t, 5, len(backupMs))
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}
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func newTestBoltStoreWithoutMigrations(t *testing.T) (*bolt.KVStore, func(), error) {
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f, err := os.CreateTemp("", "influxdata-bolt-")
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if err != nil {
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return nil, nil, errors.New("unable to open temporary boltdb file")
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}
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f.Close()
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path := f.Name()
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s := bolt.NewKVStore(zaptest.NewLogger(t), path, bolt.WithNoSync)
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if err := s.Open(context.Background()); err != nil {
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return nil, nil, err
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}
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close := func() {
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s.Close()
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os.Remove(path)
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}
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return s, close, nil
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}
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