89 lines
2.3 KiB
Go
89 lines
2.3 KiB
Go
package migrations
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import (
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"context"
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"time"
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"git.handmade.network/hmn/hmn/src/migration/types"
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"git.handmade.network/hmn/hmn/src/oops"
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"github.com/jackc/pgx/v5"
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)
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func init() {
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registerMigration(PublicInFunctions{})
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}
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type PublicInFunctions struct{}
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func (m PublicInFunctions) Version() types.MigrationVersion {
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return types.MigrationVersion(time.Date(2021, 9, 5, 22, 33, 54, 0, time.UTC))
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}
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func (m PublicInFunctions) Name() string {
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return "PublicInFunctions"
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}
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func (m PublicInFunctions) Description() string {
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return "Make sure to put the schema in front of everything inside our postgres functions"
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}
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func (m PublicInFunctions) Up(ctx context.Context, tx pgx.Tx) error {
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/*
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This is due to a really stupid behavior of Postgres where, when restoring
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data, it apparently forgets that `tablename` is generally equivalent to
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`public.tablename`. This makes it totally impossible for us to actually
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restore our database backups, since these functions fail when adding new
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rows.
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https://www.postgresql.org/message-id/20180825020418.GA7869%40momjian.us
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*/
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_, err := tx.Exec(ctx, `
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CREATE OR REPLACE FUNCTION thread_type_for_post(int) RETURNS int AS $$
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SELECT thread.type
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FROM
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public.handmade_post AS post
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JOIN public.handmade_thread AS thread ON post.thread_id = thread.id
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WHERE post.id = $1
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$$ LANGUAGE SQL;
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CREATE OR REPLACE FUNCTION project_id_for_post(int) RETURNS int AS $$
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SELECT thread.project_id
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FROM
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public.handmade_post AS post
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JOIN public.handmade_thread AS thread ON post.thread_id = thread.id
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WHERE post.id = $1
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$$ LANGUAGE SQL;
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`)
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if err != nil {
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return oops.New(err, "failed to add post constraints")
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}
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return nil
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}
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func (m PublicInFunctions) Down(ctx context.Context, tx pgx.Tx) error {
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_, err := tx.Exec(ctx, `
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CREATE OR REPLACE FUNCTION thread_type_for_post(int) RETURNS int AS $$
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SELECT thread.type
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FROM
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handmade_post AS post
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JOIN handmade_thread AS thread ON post.thread_id = thread.id
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WHERE post.id = $1
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$$ LANGUAGE SQL;
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CREATE OR REPLACE FUNCTION project_id_for_post(int) RETURNS int AS $$
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SELECT thread.project_id
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FROM
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handmade_post AS post
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JOIN handmade_thread AS thread ON post.thread_id = thread.id
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WHERE post.id = $1
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$$ LANGUAGE SQL;
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`)
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if err != nil {
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return oops.New(err, "failed to add post constraints")
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}
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return nil
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}
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