Remove invalid data from issue_tracker_data table

- removing is the first step, reinserting the second

changelogs/unreleased/198938-fix-invalid-issue-tracker-data.yml

+---
+title: Remove invalid data from issue_tracker_data table
+merge_request:
+author:
+type: fixed

db/post_migrate/20200127090233_remove_invalid_issue_tracker_data.rb

+# frozen_string_literal: true
+
+# See http://doc.gitlab.com/ce/development/migration_style_guide.html
+# for more information on how to write migrations for GitLab.
+
+class RemoveInvalidIssueTrackerData < ActiveRecord::Migration[5.2]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def up
+    sql = "DELETE FROM issue_tracker_data WHERE \
+        (length(encrypted_issues_url) > 0 AND encrypted_issues_url_iv IS NULL) \
+        OR (length(encrypted_new_issue_url) > 0 AND encrypted_new_issue_url_iv IS NULL) \
+        OR (length(encrypted_project_url) > 0 AND encrypted_project_url_iv IS NULL)"
+
+    execute(sql)
+  end
+
+  def down
+    # We need to figure out why migrating data to issue_tracker_data table
+    # failed and then can recreate the data
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2020_01_24_053531) do
+ActiveRecord::Schema.define(version: 2020_01_27_090233) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "pg_trgm"

spec/migrations/20200127090233_remove_invalid_issue_tracker_data_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+require Rails.root.join('db', 'post_migrate', '20200127090233_remove_invalid_issue_tracker_data.rb')
+
+describe RemoveInvalidIssueTrackerData, :migration do
+  let(:issue_tracker_data) { table(:issue_tracker_data) }
+  let(:services) { table(:services) }
+
+  let(:service) { services.create(id: 1) }
+  let(:data) do
+    {
+      service_id: service.id,
+      encrypted_issues_url: 'http:url.com',
+      encrypted_issues_url_iv: 'somevalue',
+      encrypted_new_issue_url: 'http:url.com',
+      encrypted_new_issue_url_iv: 'somevalue',
+      encrypted_project_url: 'username',
+      encrypted_project_url_iv: 'somevalue'
+    }
+  end
+
+  let!(:valid_data) { issue_tracker_data.create(data) }
+  let!(:empty_data) { issue_tracker_data.create(service_id: service.id) }
+  let!(:invalid_issues_url) do
+    data[:encrypted_issues_url_iv] = nil
+    issue_tracker_data.create(data)
+  end
+  let!(:missing_issues_url) do
+    data[:encrypted_issues_url] = ''
+    data[:encrypted_issues_url_iv] = nil
+    issue_tracker_data.create(data)
+  end
+  let!(:invalid_new_isue_url) do
+    data[:encrypted_new_issue_url_iv] = nil
+    issue_tracker_data.create(data)
+  end
+  let!(:missing_new_issue_url) do
+    data[:encrypted_new_issue_url] = ''
+    issue_tracker_data.create(data)
+  end
+  let!(:invalid_project_url) do
+    data[:encrypted_project_url_iv] = nil
+    issue_tracker_data.create(data)
+  end
+  let!(:missing_project_url) do
+    data[:encrypted_project_url] = nil
+    data[:encrypted_project_url_iv] = nil
+    issue_tracker_data.create(data)
+  end
+
+  it 'removes the invalid data' do
+    valid_data_records = [valid_data, empty_data, missing_issues_url, missing_new_issue_url, missing_project_url]
+
+    expect { migrate! }.to change { issue_tracker_data.count }.from(8).to(5)
+
+    expect(issue_tracker_data.all).to match_array(valid_data_records)
+  end
+end