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author | Bob Van Landuyt <bob@vanlanduyt.co> | 2017-11-14 12:39:26 +0100 |
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committer | Bob Van Landuyt <bob@vanlanduyt.co> | 2017-11-17 12:58:15 +0100 |
commit | 8f84369ae105c59a0c5cd947edb352fd616c4335 (patch) | |
tree | 56d680995c27815b15742341e0e803d958dff619 | |
parent | 8b426b63d6044746a71a63b07a709bdc9a2ee832 (diff) | |
download | gitlab-ce-bvl-delete-empty-fork-networks.tar.gz |
Delete orphaned fork networks in a migrationbvl-delete-empty-fork-networks
-rw-r--r-- | changelogs/unreleased/bvl-delete-empty-fork-networks.yml | 5 | ||||
-rw-r--r-- | db/post_migrate/20171114104051_remove_empty_fork_networks.rb | 36 | ||||
-rw-r--r-- | db/schema.rb | 2 | ||||
-rw-r--r-- | spec/migrations/remove_empty_fork_networks_spec.rb | 24 |
4 files changed, 66 insertions, 1 deletions
diff --git a/changelogs/unreleased/bvl-delete-empty-fork-networks.yml b/changelogs/unreleased/bvl-delete-empty-fork-networks.yml new file mode 100644 index 00000000000..3bbb4cf6e3c --- /dev/null +++ b/changelogs/unreleased/bvl-delete-empty-fork-networks.yml @@ -0,0 +1,5 @@ +--- +title: Clean up empty fork networks +merge_request: 15373 +author: +type: other diff --git a/db/post_migrate/20171114104051_remove_empty_fork_networks.rb b/db/post_migrate/20171114104051_remove_empty_fork_networks.rb new file mode 100644 index 00000000000..2fe99a1b9c1 --- /dev/null +++ b/db/post_migrate/20171114104051_remove_empty_fork_networks.rb @@ -0,0 +1,36 @@ +class RemoveEmptyForkNetworks < ActiveRecord::Migration + include Gitlab::Database::MigrationHelpers + + DOWNTIME = false + BATCH_SIZE = 10_000 + + class MigrationForkNetwork < ActiveRecord::Base + include EachBatch + + self.table_name = 'fork_networks' + end + + class MigrationForkNetworkMembers < ActiveRecord::Base + self.table_name = 'fork_network_members' + end + + disable_ddl_transaction! + + def up + say 'Deleting empty ForkNetworks in batches' + + has_members = MigrationForkNetworkMembers + .where('fork_network_members.fork_network_id = fork_networks.id') + .select(1) + MigrationForkNetwork.where('NOT EXISTS (?)', has_members) + .each_batch(of: BATCH_SIZE) do |networks| + deleted = networks.delete_all + + say "Deleted #{deleted} rows in batch" + end + end + + def down + # nothing + end +end diff --git a/db/schema.rb b/db/schema.rb index 37e08d453c8..53299792a39 100644 --- a/db/schema.rb +++ b/db/schema.rb @@ -11,7 +11,7 @@ # # It's strongly recommended that you check this file into your version control system. -ActiveRecord::Schema.define(version: 20171106180641) do +ActiveRecord::Schema.define(version: 20171114104051) do # These are extensions that must be enabled in order to support this database enable_extension "plpgsql" diff --git a/spec/migrations/remove_empty_fork_networks_spec.rb b/spec/migrations/remove_empty_fork_networks_spec.rb new file mode 100644 index 00000000000..cf6ae5cda74 --- /dev/null +++ b/spec/migrations/remove_empty_fork_networks_spec.rb @@ -0,0 +1,24 @@ +require 'spec_helper' +require Rails.root.join('db', 'post_migrate', '20171114104051_remove_empty_fork_networks.rb') + +describe RemoveEmptyForkNetworks, :migration do + let!(:fork_networks) { table(:fork_networks) } + + let(:deleted_project) { create(:project) } + let!(:empty_network) { create(:fork_network, id: 1, root_project_id: deleted_project.id) } + let!(:other_network) { create(:fork_network, id: 2, root_project_id: create(:project).id) } + + before do + deleted_project.destroy! + end + + it 'deletes only the fork network without members' do + expect(fork_networks.count).to eq(2) + + migrate! + + expect(fork_networks.find_by(id: empty_network.id)).to be_nil + expect(fork_networks.find_by(id: other_network.id)).not_to be_nil + expect(fork_networks.count).to eq(1) + end +end |