db/post_migrate/20200506154421_migrate_scim_identities_to_saml_for_new_users.rb


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37

# frozen_string_literal: true

class MigrateScimIdentitiesToSamlForNewUsers < ActiveRecord::Migration[6.0]
  DOWNTIME = false

  class ScimIdentity < ActiveRecord::Base
    self.table_name = 'scim_identities'

    belongs_to :user

    include ::EachBatch
  end

  class Identity < ActiveRecord::Base
    self.table_name = 'identities'

    belongs_to :saml_provider
  end

  def up
    users_with_saml_provider = Identity.select('user_id').joins(:saml_provider)

    ScimIdentity.each_batch do |relation|
      identity_records = relation
        .select("scim_identities.extern_uid, 'group_saml', scim_identities.user_id, CURRENT_TIMESTAMP, CURRENT_TIMESTAMP, saml_providers.id")
        .joins(:user)
        .joins('inner join saml_providers on saml_providers.group_id=scim_identities.group_id')
        .where("date_trunc('second',scim_identities.created_at) at time zone 'UTC' = date_trunc('second',users.created_at)")
        .where.not(user_id: users_with_saml_provider)

      execute "insert into identities (extern_uid, provider, user_id, created_at, updated_at, saml_provider_id) #{identity_records.to_sql} on conflict do nothing"
    end
  end

  def down
  end
end