54 lines
1.5 KiB
Go
54 lines
1.5 KiB
Go
// Copyright 2016 clair authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package migrations
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import (
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"database/sql"
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"github.com/remind101/migrate"
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)
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func init() {
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// This migration removes the data maintained by the previous migration tool
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// (liamstask/goose), and if it was present, mark the 00002_initial_schema
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// migration as done.
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RegisterMigration(migrate.Migration{
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ID: 1,
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Up: func(tx *sql.Tx) error {
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// Verify that goose was in use before, otherwise skip this migration.
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var e bool
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err := tx.QueryRow("SELECT true FROM pg_class WHERE relname = $1", "goose_db_version").Scan(&e)
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if err == sql.ErrNoRows {
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return nil
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}
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if err != nil {
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return err
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}
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// Delete goose's data.
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_, err = tx.Exec("DROP TABLE goose_db_version CASCADE")
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if err != nil {
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return err
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}
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// Mark the '00002_initial_schema' as done.
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_, err = tx.Exec("INSERT INTO schema_migrations (version) VALUES (2)")
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return err
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},
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Down: migrate.Queries([]string{}),
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})
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}
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