Setup rake task to import organisations from S3 (#267)

Co-authored-by: Kat <katrina@madetech.com>

.github/workflows/pipeline.yml

@@ -122,6 +122,7 @@ jobs:
         GOVUK_NOTIFY_API_KEY: ${{ secrets.GOVUK_NOTIFY_API_KEY }}
         APP_HOST: ${{ secrets.APP_HOST }}
         RAILS_MASTER_KEY: ${{ secrets.RAILS_MASTER_KEY }}
+        IMPORT_PAAS_INSTANCE: ${{ secrets.IMPORT_PAAS_INSTANCE }}
       run: |
         cf7 api $CF_API_ENDPOINT
         cf7 auth
@@ -131,4 +132,5 @@ jobs:
         cf7 set-env $APP_NAME GOVUK_NOTIFY_API_KEY $GOVUK_NOTIFY_API_KEY
         cf7 set-env $APP_NAME APP_HOST $APP_HOST
         cf7 set-env $APP_NAME RAILS_MASTER_KEY $RAILS_MASTER_KEY
+        cf7 set-env $APP_NAME IMPORT_PAAS_INSTANCE $IMPORT_PAAS_INSTANCE
         cf7 push $APP_NAME --strategy rolling

app/services/import_service.rb

@@ -0,0 +1,56 @@
+class ImportService
+  def initialize(storage_service, logger = Rails.logger)
+    @storage_service = storage_service
+    @logger = logger
+  end
+
+  def update_organisations(folder)
+    filenames = @storage_service.list_files(folder)
+    filenames.each do |filename|
+      file_io = @storage_service.get_file_io(filename)
+      create_organisation(file_io)
+    end
+  end
+
+private
+
+  def create_organisation(file_io)
+    doc = Nokogiri::XML(file_io)
+    name = field_value(doc, "name")
+    old_visible_id = field_value(doc, "visible-id")
+    begin
+      Organisation.create!(
+        name: name,
+        providertype: field_value(doc, "institution-type"),
+        phone: field_value(doc, "telephone-number"),
+        holds_own_stock: to_boolean(field_value(doc, "holds-stock")),
+        active: to_boolean(field_value(doc, "active")),
+        old_association_type: field_value(doc, "old-association-type"),
+        software_supplier_id: field_value(doc, "software-supplier-id"),
+        housing_management_system: field_value(doc, "housing-management-system"),
+        choice_based_lettings: to_boolean(field_value(doc, "choice-based-lettings")),
+        common_housing_register: to_boolean(field_value(doc, "common-housing-register")),
+        choice_allocation_policy: to_boolean(field_value(doc, "choice-allocation-policy")),
+        cbl_proportion_percentage: field_value(doc, "cbl-proportion-percentage"),
+        enter_affordable_logs: to_boolean(field_value(doc, "enter-affordable-logs")),
+        owns_affordable_logs: to_boolean(field_value(doc, "owns-affordable-rent")),
+        housing_registration_no: field_value(doc, "housing-registration-no"),
+        general_needs_units: field_value(doc, "general-needs-units"),
+        supported_housing_units: field_value(doc, "supported-housing-units"),
+        unspecified_units: field_value(doc, "unspecified-units"),
+        old_org_id: field_value(doc, "id"),
+        old_visible_id: old_visible_id,
+      )
+    rescue ActiveRecord::RecordNotUnique
+      @logger.warn("Organisation #{name} is already present with old visible ID #{old_visible_id}, skipping.")
+    end
+  end
+
+  def field_value(doc, field)
+    doc.at_xpath("//institution:#{field}")&.text
+  end
+
+  def to_boolean(input_string)
+    input_string == "true"
+  end
+end

app/services/storage_service.rb

@@ -8,10 +8,14 @@ class StorageService
     @client = create_client
   end
 
+  def list_files(folder)
+    @client.list_objects_v2(bucket: @configuration.bucket_name, prefix: folder)
+           .flat_map { |response| response.contents.map(&:key) }
+  end
+
   def get_file_io(file_name)
-    file_response =
-      @client.get_object(bucket: @configuration.bucket_name, key: file_name)
-    file_response.body
+    @client.get_object(bucket: @configuration.bucket_name, key: file_name)
+           .body
   end
 
   def write_file(file_name, data)

db/migrate/20220203104800_add_unique_index_to_old_visible_id.rb

@@ -0,0 +1,3 @@
+class AddUniqueIndexToOldVisibleId < ActiveRecord::Migration[7.0]
+  add_index :organisations, :old_visible_id, unique: true
+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: 2022_01_31_123638) do
+ActiveRecord::Schema.define(version: 2022_02_03_104800) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -228,6 +228,7 @@ ActiveRecord::Schema.define(version: 2022_01_31_123638) do
     t.integer "unspecified_units"
     t.string "old_org_id"
     t.integer "old_visible_id"
+    t.index ["old_visible_id"], name: "index_organisations_on_old_visible_id", unique: true
   end
 
   create_table "users", force: :cascade do |t|

lib/tasks/data_import/organisations.rake

@@ -6,40 +6,8 @@ namespace :data_import do
   # rake data_import:organisations['path/to/xml_files']
   task :organisations, %i[path] => :environment do |_task, args|
     directory = args.path
-    Dir.glob("#{directory}/*.xml").each do |file|
-      doc = Nokogiri::XML(File.open(file))
-      Organisation.create!(
-        name: field_value(doc, "name"),
-        providertype: field_value(doc, "institution-type"),
-        phone: field_value(doc, "telephone-number"),
-        holds_own_stock: to_boolean(field_value(doc, "holds-stock")),
-        active: to_boolean(field_value(doc, "active")),
-        old_association_type: field_value(doc, "old-association-type"),
-        software_supplier_id: field_value(doc, "software-supplier-id"),
-        housing_management_system: field_value(doc, "housing-management-system"),
-        choice_based_lettings: to_boolean(field_value(doc, "choice-based-lettings")),
-        common_housing_register: to_boolean(field_value(doc, "common-housing-register")),
-        choice_allocation_policy: to_boolean(field_value(doc, "choice-allocation-policy")),
-        cbl_proportion_percentage: field_value(doc, "cbl-proportion-percentage"),
-        enter_affordable_logs: to_boolean(field_value(doc, "enter-affordable-logs")),
-        owns_affordable_logs: to_boolean(field_value(doc, "owns-affordable-rent")),
-        housing_registration_no: field_value(doc, "housing-registration-no"),
-        general_needs_units: field_value(doc, "general-needs-units"),
-        supported_housing_units: field_value(doc, "supported-housing-units"),
-        unspecified_units: field_value(doc, "unspecified-units"),
-        old_org_id: field_value(doc, "id"),
-        old_visible_id: field_value(doc, "visible-id"),
-      )
-    end
+    storage_service = StorageService.new(PaasConfigurationService.new, ENV["IMPORT_PAAS_INSTANCE"])
+    import_service = ImportService.new(storage_service)
+    import_service.update_organisations(directory)
   end
 end
-
-private
-
-def field_value(doc, field)
-  doc.at_xpath("//institution:#{field}")&.text
-end
-
-def to_boolean(input_string)
-  input_string == "true"
-end

spec/lib/tasks/data_import/organisations_spec.rb

@@ -5,15 +5,28 @@ describe "rake data_import:organisations", type: :task do
   subject(:task) { Rake::Task["data_import:organisations"] }
 
   let(:fixture_path) { "spec/fixtures/softwire_imports/organisations" }
+  let(:instance_name) { "my_instance" }
+  let(:storage_service) { instance_double(StorageService) }
+  let(:paas_config_service) { instance_double(PaasConfigurationService) }
+  let(:import_service) { instance_double(ImportService) }
 
   before do
+    allow(StorageService).to receive(:new).and_return(storage_service)
+    allow(PaasConfigurationService).to receive(:new).and_return(paas_config_service)
+    allow(ImportService).to receive(:new).and_return(import_service)
+    allow(ENV).to receive(:[])
+    allow(ENV).to receive(:[]).with("IMPORT_PAAS_INSTANCE").and_return(instance_name)
+
     Rake.application.rake_require("tasks/data_import/organisations")
     Rake::Task.define_task(:environment)
     task.reenable
   end
 
   it "creates an organisation from the given XML file" do
-    expect { task.invoke(fixture_path) }.to change(Organisation, :count).by(1)
-    expect(Organisation.find_by(old_visible_id: 1034).name).to eq("HA Ltd")
+    expect(StorageService).to receive(:new).with(paas_config_service, instance_name)
+    expect(ImportService).to receive(:new).with(storage_service)
+    expect(import_service).to receive(:update_organisations).with(fixture_path)
+
+    task.invoke(fixture_path)
   end
 end

spec/services/import_service_spec.rb

@@ -0,0 +1,65 @@
+require "rails_helper"
+
+RSpec.describe ImportService do
+  let(:storage_service) { instance_double(StorageService) }
+  let(:logger) { instance_double(Rails::Rack::Logger) }
+  let(:folder_name) { "organisations" }
+  let(:filenames) { %w[my_folder/my_file1.xml my_folder/my_file2.xml] }
+  let(:fixture_directory) { "spec/fixtures/softwire_imports/organisations" }
+
+  def create_organisation_file(fixture_directory, visible_id, name = "my_organisation")
+    file = File.open("#{fixture_directory}/7c5bd5fb549c09a2c55d7cb90d7ba84927e64618.xml")
+    doc =  Nokogiri::XML(file)
+    doc.at_xpath("//institution:visible-id").content = visible_id
+    doc.at_xpath("//institution:name").content = name
+    StringIO.new(doc.to_xml)
+  end
+
+  context "when importing organisations" do
+    subject(:import_service) { described_class.new(storage_service) }
+
+    before do
+      allow(storage_service).to receive(:list_files)
+                                   .and_return(filenames)
+      allow(storage_service).to receive(:get_file_io)
+                                   .with(filenames[0])
+                                   .and_return(create_organisation_file(fixture_directory, 1))
+      allow(storage_service).to receive(:get_file_io)
+                                   .with(filenames[1])
+                                   .and_return(create_organisation_file(fixture_directory, 2))
+    end
+
+    it "successfully create a new organisation if it does not exist" do
+      expect(storage_service).to receive(:list_files).with(folder_name)
+      expect(storage_service).to receive(:get_file_io).with(filenames[0]).ordered
+      expect(storage_service).to receive(:get_file_io).with(filenames[1]).ordered
+
+      expect { import_service.update_organisations(folder_name) }.to change(Organisation, :count).by(2)
+      expect(Organisation).to exist(old_visible_id: 1)
+      expect(Organisation).to exist(old_visible_id: 2)
+    end
+  end
+
+  context "when importing organisations twice" do
+    subject(:import_service) { described_class.new(storage_service, logger) }
+
+    before do
+      allow(storage_service).to receive(:list_files).and_return([filenames[0]])
+      allow(storage_service).to receive(:get_file_io).and_return(
+        create_organisation_file(fixture_directory, 1),
+        create_organisation_file(fixture_directory, 1, "my_new_organisation"),
+      )
+    end
+
+    it "successfully create an organisation the first time, and does not update it" do
+      expect(storage_service).to receive(:list_files).with(folder_name).twice
+      expect(storage_service).to receive(:get_file_io).with(filenames[0]).twice
+      expect(logger).to receive(:warn).once
+
+      expect { import_service.update_organisations(folder_name) }.to change(Organisation, :count).by(1)
+      expect { import_service.update_organisations(folder_name) }.to change(Organisation, :count).by(0)
+
+      expect(Organisation).to exist(old_visible_id: 1, name: "my_organisation")
+    end
+  end
+end

spec/services/storage_service_spec.rb

@@ -19,7 +19,7 @@ RSpec.describe StorageService do
     JSON
   end
 
-  context "when we create an S3 Service with no PaaS Configuration present" do
+  context "when we create a storage service with no PaaS Configuration present" do
     subject(:storage_service) { described_class.new(PaasConfigurationService.new, "random_instance") }
 
     it "raises an exception" do
@@ -27,7 +27,7 @@ RSpec.describe StorageService do
     end
   end
 
-  context "when we create an S3 Service with an unknown instance name" do
+  context "when we create a storage service with an unknown instance name" do
     subject(:storage_service) { described_class.new(PaasConfigurationService.new, "random_instance") }
 
     before do
@@ -39,7 +39,7 @@ RSpec.describe StorageService do
     end
   end
 
-  context "when we create an storage service with a valid instance name" do
+  context "when we create a storage service with a valid instance name" do
     subject(:storage_service) { described_class.new(PaasConfigurationService.new, instance_name) }
 
     before do
@@ -64,7 +64,7 @@ RSpec.describe StorageService do
     end
   end
 
-  context "when we create an storage service and write a stubbed object" do
+  context "when we create a storage service and write a stubbed object" do
     subject(:storage_service) { described_class.new(PaasConfigurationService.new, instance_name) }
 
     let(:filename) { "my_file" }
@@ -98,4 +98,34 @@ RSpec.describe StorageService do
       storage_service.write_file(filename, content)
     end
   end
+
+  context "when we create a storage service and list files" do
+    subject(:storage_service) { described_class.new(PaasConfigurationService.new, instance_name) }
+
+    let(:s3_client_stub) { Aws::S3::Client.new(stub_responses: true) }
+
+    before do
+      allow(ENV).to receive(:[])
+      allow(ENV).to receive(:[]).with("VCAP_SERVICES").and_return(vcap_services)
+      allow(Aws::S3::Client).to receive(:new).and_return(s3_client_stub)
+    end
+
+    it "returns a list with all present file names in a given folder" do
+      expected_filenames = %w[my_folder/my_file1.xml my_folder/my_file2.xml]
+      s3_client_stub.stub_responses(:list_objects_v2, {
+        contents: [
+          {
+            key: expected_filenames[0],
+          },
+          {
+            key: expected_filenames[1],
+          },
+        ],
+      })
+
+      filenames = storage_service.list_files("my_folder")
+
+      expect(filenames).to eq(expected_filenames)
+    end
+  end
 end