add primary key to github_event table

[DanCech]

fixes #34

I ended up just adding a simple version of the raw sql migration here since I couldn't import a newer version of grafana/grafana and the syntax is the same for both mysql and postgres

[marefr]

Thanks for looking into this!

I think the historical reason not having primary key for this might be that event id might not be unique/missing or something like that - it's coming from GitHub.

devtools/pkg/archive/migrations.go

Line 45 in 9a3982e

{Name: "id", Type: migrator.DB_BigInt},

Parsed here and could in theory be zero:

devtools/pkg/archive/archive.go

Line 259 in 9a3982e

id, err := strconv.ParseInt(ge.ID, 10, 0)

An alternative could be to only add an index, but lets give this a go and see what happens

[DanCech]

Since the code already issues a DELETE by id before the insert we couldn't have duplicates anyway.

devtools/pkg/archive/archive.go

Lines 310 to 316 in 9a3982e

	if _, err := session.Exec("DELETE FROM github_event WHERE ID = ? ", event.ID); err != nil {
	return err
	}
	if _, err := session.Insert(event); err != nil {
	return err
	}

[marefr]

Yeah good point 😄 👍