x/pkgsite: delete from module from version_map in postgres.DeleteModule

[julieqiu]

See:
https://github.com/golang/pkgsite/blob/df627db60a835a59120b45fe7af59779840aa522/internal/postgres/insert_module_test.go#L312

Related: #39621

[bharaththiruveedula]

@julieqiu can I work on this?

I am new to this repo. I am planning to the same approach as in https://github.com/golang/pkgsite/blob/df627db60a835a59120b45fe7af59779840aa522/internal/postgres/insert_module_test.go#L307 but with "version_map" table. Is my approach correct?

[julieqiu]

For sure! Thanks @bharaththiruveedula - here's the relevant info for this:

At the moment, when we call postgres.DeleteModule we will delete from the following tables:

• modules, which results in cascaded deletes to several other tables
• imports_unique

We also want to delete from the version_map table.

The task here would be to add that to postgres.DeleteModule, and also add a test.

[bharaththiruveedula]

Thanks for giving the context. I will work on this @julieqiu

[bharaththiruveedula]

@julieqiu pushed the changes to https://go-review.googlesource.com/c/pkgsite/+/238637. Can you please review?

[julieqiu]

Fixed by https://go-review.googlesource.com/c/pkgsite/+/238637.