Add import jira issues functionality

Import jira issues by scheduling a sidekiq job for each issue to
be imported.

app/models/jira_import_data.rb

@@ -39,4 +39,8 @@ class JiraImportData < ProjectImportData
 
     data['jira'].delete(FORCE_IMPORT_KEY)
   end
+
+  def current_project
+    projects.last
+  end
 end

app/workers/all_queues.yml

@@ -556,6 +556,13 @@
   :resource_boundary: :unknown
   :weight: 1
   :idempotent: 
+- :name: jira_importer:jira_import_import_issue
+  :feature_category: :importers
+  :has_external_dependencies: 
+  :urgency: :low
+  :resource_boundary: :unknown
+  :weight: 1
+  :idempotent: 
 - :name: jira_importer:jira_import_stage_finish_import
   :feature_category: :importers
   :has_external_dependencies: 

app/workers/gitlab/jira_import/import_issue_worker.rb

+# frozen_string_literal: true
+
+module Gitlab
+  module JiraImport
+    class ImportIssueWorker # rubocop:disable Scalability/IdempotentWorker
+      include ApplicationWorker
+      include NotifyUponDeath
+      include Gitlab::JiraImport::QueueOptions
+      include Gitlab::Import::DatabaseHelpers
+
+      def perform(project_id, jira_issue_id, issue_attributes, waiter_key)
+        issue_id = insert_and_return_id(issue_attributes, Issue)
+        cache_issue_mapping(issue_id, jira_issue_id, project_id)
+      rescue => ex
+        # Todo: Record jira issue id(or better jira issue key),
+        # so that we can report the list of failed to import issues to the user
+        # see https://gitlab.com/gitlab-org/gitlab/-/issues/211653
+        #
+        # It's possible the project has been deleted since scheduling this
+        # job. In this case we'll just skip creating the issue.
+        Gitlab::ErrorTracking.track_exception(ex, project_id: project_id)
+        JiraImport.increment_issue_failures(project_id)
+      ensure
+        # ensure we notify job waiter that the job has finished
+        JobWaiter.notify(waiter_key, jid) if waiter_key
+      end
+
+      private
+
+      def cache_issue_mapping(issue_id, jira_issue_id, project_id)
+        cache_key = JiraImport.jira_issue_cache_key(project_id, jira_issue_id)
+        Gitlab::Cache::Import::Caching.write(cache_key, issue_id)
+      end
+    end
+  end
+end

app/workers/gitlab/jira_import/stage/finish_import_worker.rb

@@ -11,6 +11,7 @@ module Gitlab
         def import(project)
           project.after_import
         ensure
+          JiraImport.cache_cleanup(project.id)
           project.import_data.becomes(JiraImportData).finish_import!
           project.import_data.save!
         end

app/workers/gitlab/jira_import/stage/import_issues_worker.rb

@@ -9,12 +9,19 @@ module Gitlab
         private
 
         def import(project)
-          # fake issues import workers for now
-          # new job waiter will have zero jobs_remaining by default, so it will just pass on to next stage
-          jobs_waiter = JobWaiter.new
+          jobs_waiter = Gitlab::JiraImport::IssuesImporter.new(project).execute
+
           project.import_state.refresh_jid_expiration
 
-          Gitlab::JiraImport::AdvanceStageWorker.perform_async(project.id, { jobs_waiter.key => jobs_waiter.jobs_remaining }, :attachments)
+          Gitlab::JiraImport::AdvanceStageWorker.perform_async(
+            project.id,
+            { jobs_waiter.key => jobs_waiter.jobs_remaining },
+            next_stage(project)
+          )
+        end
+
+        def next_stage(project)
+          Gitlab::JiraImport.get_issues_next_start_at(project.id) < 0 ? :attachments : :issues
         end
       end
     end

app/workers/gitlab/jira_import/stage/start_import_worker.rb

@@ -26,6 +26,7 @@ module Gitlab
         def start_import
           return false unless project
           return false if Feature.disabled?(:jira_issue_import, project)
+          return false unless project.jira_force_import?
           return true if start(project.import_state)
 
           Gitlab::Import::Logger.info(

lib/gitlab/cache/import/caching.rb

@@ -70,6 +70,21 @@ module Gitlab
           value
         end
 
+        # Increment the integer value of a key by one.
+        # Sets the value to zero if missing before incrementing
+        #
+        # key - The cache key to increment.
+        # timeout - The time after which the cache key should expire.
+        # @return - the incremented value
+        def self.increment(raw_key, timeout: TIMEOUT)
+          key = cache_key_for(raw_key)
+
+          Redis::Cache.with do |redis|
+            redis.incr(key)
+            redis.expire(key, timeout)
+          end
+        end
+
         # Adds a value to a set.
         #
         # raw_key - The key of the set to add the value to.

lib/gitlab/jira_import.rb

+# frozen_string_literal: true
+
+module Gitlab
+  module JiraImport
+    JIRA_IMPORT_CACHE_TIMEOUT = 10.seconds.to_i
+
+    FAILED_ISSUES_COUNTER_KEY = 'jira-import/failed/%{project_id}/%{collection_type}'
+    NEXT_ITEMS_START_AT_KEY = 'jira-import/paginator/%{project_id}/%{collection_type}'
+    ITEMS_MAPPER_CACHE_KEY = 'jira-import/items-mapper/%{project_id}/%{collection_type}/%{jira_isssue_id}'
+    ALREADY_IMPORTED_ITEMS_CACHE_KEY = 'jira-importer/already-imported/%{project}/%{collection_type}'
+
+    def self.jira_issue_cache_key(project_id, jira_issue_id)
+      ITEMS_MAPPER_CACHE_KEY % { project_id: project_id, collection_type: :issues, jira_isssue_id: jira_issue_id }
+    end
+
+    def self.already_imported_cache_key(collection_type, project_id)
+      ALREADY_IMPORTED_ITEMS_CACHE_KEY % { collection_type: collection_type, project: project_id }
+    end
+
+    def self.jira_issues_next_page_cache_key(project_id)
+      NEXT_ITEMS_START_AT_KEY % { project_id: project_id, collection_type: :issues }
+    end
+
+    def self.failed_issues_counter_cache_key(project_id)
+      FAILED_ISSUES_COUNTER_KEY % { project_id: project_id, collection_type: :issues }
+    end
+
+    def self.increment_issue_failures(project_id)
+      Gitlab::Cache::Import::Caching.increment(self.failed_issues_counter_cache_key(project_id))
+    end
+
+    def self.get_issues_next_start_at(project_id)
+      Gitlab::Cache::Import::Caching.read(self.jira_issues_next_page_cache_key(project_id)).to_i
+    end
+
+    def self.store_issues_next_started_at(project_id, value)
+      cache_key = self.jira_issues_next_page_cache_key(project_id)
+      Gitlab::Cache::Import::Caching.write(cache_key, value)
+    end
+
+    def self.cache_cleanup(project_id)
+      Gitlab::Cache::Import::Caching.expire(self.failed_issues_counter_cache_key(project_id), JIRA_IMPORT_CACHE_TIMEOUT)
+      Gitlab::Cache::Import::Caching.expire(self.jira_issues_next_page_cache_key(project_id), JIRA_IMPORT_CACHE_TIMEOUT)
+      Gitlab::Cache::Import::Caching.expire(self.already_imported_cache_key(:issues, project_id), JIRA_IMPORT_CACHE_TIMEOUT)
+    end
+  end
+end

lib/gitlab/jira_import/base_importer.rb

+# frozen_string_literal: true
+
+module Gitlab
+  module JiraImport
+    class BaseImporter
+      attr_reader :project, :client, :formatter, :jira_project_key
+
+      def initialize(project)
+        raise Projects::ImportService::Error, _('Jira import feature is disabled.') unless Feature.enabled?(:jira_issue_import, project)
+        raise Projects::ImportService::Error, _('Jira integration not configured.') unless project.jira_service&.active?
+
+        @jira_project_key = project&.import_data&.becomes(JiraImportData)&.current_project&.key
+        raise Projects::ImportService::Error, _('Unable to find Jira project to import data from.') unless @jira_project_key
+
+        @project = project
+        @client = project.jira_service.client
+        @formatter = Gitlab::ImportFormatter.new
+      end
+
+      private
+
+      def imported_items_cache_key
+        raise NotImplementedError
+      end
+
+      def mark_as_imported(id)
+        Gitlab::Cache::Import::Caching.set_add(imported_items_cache_key, id)
+      end
+
+      def already_imported?(id)
+        Gitlab::Cache::Import::Caching.set_includes?(imported_items_cache_key, id)
+      end
+    end
+  end
+end

lib/gitlab/jira_import/issue_serializer.rb

+# frozen_string_literal: true
+
+module Gitlab
+  module JiraImport
+    class IssueSerializer
+      def initialize(project, jira_issue, params = {})
+      end
+
+      def execute
+        # this is going to be implemented in https://gitlab.com/gitlab-org/gitlab/-/merge_requests/27201
+        {}
+      end
+    end
+  end
+end

lib/gitlab/jira_import/issues_importer.rb

+# frozen_string_literal: true
+
+module Gitlab
+  module JiraImport
+    class IssuesImporter < BaseImporter
+      # Jira limits max items per request to be fetched to 100
+      # see https://jira.atlassian.com/browse/JRACLOUD-67570
+      # We set it to 1000 in case they change their mind.
+      BATCH_SIZE = 1000
+
+      attr_reader :imported_items_cache_key, :start_at, :job_waiter
+
+      def initialize(project)
+        super
+        # get cached start_at value, or zero if not cached yet
+        @start_at = Gitlab::JiraImport.get_issues_next_start_at(project.id)
+        @imported_items_cache_key = JiraImport.already_imported_cache_key(:issues, project.id)
+        @job_waiter = JobWaiter.new
+      end
+
+      def execute
+        import_issues
+      end
+
+      private
+
+      def import_issues
+        return job_waiter if jira_last_page_reached?
+
+        issues = fetch_issues(start_at)
+        update_start_at_with(issues)
+
+        schedule_issue_import_workers(issues)
+      end
+
+      def jira_last_page_reached?
+        start_at < 0
+      end
+
+      def update_start_at_with(issues)
+        @start_at += issues.size
+
+        # store -1 if this is the last page to be imported, so no more `ImportIssuesWorker` workers are scheduled
+        # from Gitlab::JiraImport::Stage::ImportIssuesWorker#perform
+        @start_at = -1 if issues.blank?
+        Gitlab::JiraImport.store_issues_next_started_at(project.id, start_at)
+      end
+
+      def schedule_issue_import_workers(issues)
+        next_iid = project.issues.maximum(:iid).to_i + 1
+
+        issues.each do |jira_issue|
+          # Technically it's possible that the same work is performed multiple
+          # times, as Sidekiq doesn't guarantee there will ever only be one
+          # instance of a job or if for some reason the paginated results
+          # returned from Jira include issues there were returned before.
+          # For such cases we exit early if issue was already imported.
+          next if already_imported?(jira_issue.id)
+
+          issue_attrs = IssueSerializer.new(project, jira_issue, { iid: next_iid }).execute
+          Gitlab::JiraImport::ImportIssueWorker.perform_async(project.id, jira_issue.id, issue_attrs, job_waiter.key)
+
+          job_waiter.jobs_remaining += 1
+          next_iid += 1
+
+          # Mark the issue as imported immediately so we don't end up
+          # importing it multiple times within same import.
+          # These ids are cleaned-up when import finishes.
+          # see Gitlab::JiraImport::Stage::FinishImportWorker
+          mark_as_imported(jira_issue.id)
+        end
+
+        job_waiter
+      end
+
+      def fetch_issues(start_at)
+        client.Issue.jql("PROJECT='#{jira_project_key}' ORDER BY created ASC", { max_results: BATCH_SIZE, start_at: start_at })
+      end
+    end
+  end
+end

locale/gitlab.pot

@@ -11287,6 +11287,12 @@ msgstr ""
 msgid "Jira Issue Import"
 msgstr ""
 
+msgid "Jira import feature is disabled."
+msgstr ""
+
+msgid "Jira integration not configured."
+msgstr ""
+
 msgid "JiraService|Events for %{noteable_model_name} are disabled."
 msgstr ""
 
@@ -21398,6 +21404,9 @@ msgstr ""
 msgid "Unable to fetch vulnerable projects"
 msgstr ""
 
+msgid "Unable to find Jira project to import data from."
+msgstr ""
+
 msgid "Unable to generate new instance ID"
 msgstr ""
 

spec/lib/gitlab/jira_import/base_importer_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Gitlab::JiraImport::BaseImporter do
+  let(:project) { create(:project) }
+
+  describe 'with any inheriting class' do
+    context 'when feature flag disabled' do
+      before do
+        stub_feature_flags(jira_issue_import: false)
+      end
+
+      it 'raises exception' do
+        expect { described_class.new(project) }.to raise_error(Projects::ImportService::Error, 'Jira import feature is disabled.')
+      end
+    end
+
+    context 'when feature flag enabled' do
+      before do
+        stub_feature_flags(jira_issue_import: true)
+      end
+
+      context 'when Jira service was not setup' do
+        it 'raises exception' do
+          expect { described_class.new(project) }.to raise_error(Projects::ImportService::Error, 'Jira integration not configured.')
+        end
+      end
+
+      context 'when Jira service exists' do
+        let!(:jira_service) { create(:jira_service, project: project) }
+
+        context 'when Jira import data is not present' do
+          it 'raises exception' do
+            expect { described_class.new(project) }.to raise_error(Projects::ImportService::Error, 'Unable to find Jira project to import data from.')
+          end
+        end
+
+        context 'when import data exists' do
+          let(:jira_import_data) do
+            data = JiraImportData.new
+            data << JiraImportData::JiraProjectDetails.new('xx', Time.now.strftime('%Y-%m-%d %H:%M:%S'), { user_id: 1, name: 'root' })
+            data
+          end
+          let(:project) { create(:project, import_data: jira_import_data) }
+          let(:subject) { described_class.new(project) }
+
+          context 'when #imported_items_cache_key is not implemented' do
+            it { expect { subject.send(:imported_items_cache_key) }.to raise_error(NotImplementedError) }
+          end
+
+          context 'when #imported_items_cache_key is implemented' do
+            before do
+              allow(subject).to receive(:imported_items_cache_key).and_return('dumb-importer-key')
+            end
+
+            describe '#imported_items_cache_key' do
+              it { expect(subject.send(:imported_items_cache_key)).to eq('dumb-importer-key') }
+            end
+
+            describe '#mark_as_imported', :clean_gitlab_redis_cache do
+              it 'stores id in redis cache' do
+                expect(Gitlab::Cache::Import::Caching).to receive(:set_add).once.and_call_original
+
+                subject.send(:mark_as_imported, 'some-id')
+
+                expect(Gitlab::Cache::Import::Caching.set_includes?(subject.send(:imported_items_cache_key), 'some-id')).to be true
+              end
+            end
+
+            describe '#already_imported?', :clean_gitlab_redis_cache do
+              it 'returns false if value is not in cache' do
+                expect(Gitlab::Cache::Import::Caching).to receive(:set_includes?).once.and_call_original
+
+                expect(subject.send(:already_imported?, 'some-id')).to be false
+              end
+
+              it 'returns true if value already stored in cache' do
+                Gitlab::Cache::Import::Caching.set_add(subject.send(:imported_items_cache_key), 'some-id')
+
+                expect(subject.send(:already_imported?, 'some-id')).to be true
+              end
+            end
+          end
+        end
+      end
+    end
+  end
+end

spec/lib/gitlab/jira_import/issues_importer_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Gitlab::JiraImport::IssuesImporter do
+  let(:user) { create(:user) }
+  let(:jira_import_data) do
+    data = JiraImportData.new
+    data << JiraImportData::JiraProjectDetails.new('XX', Time.now.strftime('%Y-%m-%d %H:%M:%S'), { user_id: user.id, name: user.name })
+    data
+  end
+  let(:project) { create(:project, import_data: jira_import_data) }
+  let!(:jira_service) { create(:jira_service, project: project) }
+
+  subject { described_class.new(project) }
+
+  before do
+    stub_feature_flags(jira_issue_import: true)
+  end
+
+  describe '#imported_items_cache_key' do
+    it_behaves_like 'raise exception if not implemented'
+    it { expect(subject.imported_items_cache_key).to eq("jira-importer/already-imported/#{project.id}/issues") }
+  end
+
+  describe '#execute', :clean_gitlab_redis_cache do
+    context 'when no returned issues' do
+      it 'does not schedule any import jobs' do
+        expect(subject).to receive(:fetch_issues).with(0).and_return([])
+        expect(subject).not_to receive(:already_imported?)
+        expect(subject).not_to receive(:mark_as_imported)
+        expect(Gitlab::JiraImport::ImportIssueWorker).not_to receive(:perform_async)
+
+        job_waiter = subject.execute
+
+        expect(job_waiter.jobs_remaining).to eq(0)
+        expect(Gitlab::JiraImport.get_issues_next_start_at(project.id)).to eq(-1)
+      end
+    end
+
+    context 'with results returned' do
+      JiraIssue = Struct.new(:id)
+      let_it_be(:jira_issue1) { JiraIssue.new(1) }
+      let_it_be(:jira_issue2) { JiraIssue.new(2) }
+
+      context 'when single page of results is returned' do
+        before do
+          stub_const("#{described_class.name}::BATCH_SIZE", 3)
+        end
+
+        it 'schedules 2 import jobs' do
+          expect(subject).to receive(:fetch_issues).and_return([jira_issue1, jira_issue2])
+          expect(Gitlab::JiraImport::ImportIssueWorker).to receive(:perform_async).twice
+          expect(Gitlab::Cache::Import::Caching).to receive(:set_add).twice.and_call_original
+          expect(Gitlab::Cache::Import::Caching).to receive(:set_includes?).twice.and_call_original
+          allow_next_instance_of(Gitlab::JiraImport::IssueSerializer) do |instance|
+            allow(instance).to receive(:execute).and_return({ key: 'data' })
+          end
+
+          job_waiter = subject.execute
+
+          expect(job_waiter.jobs_remaining).to eq(2)
+          expect(Gitlab::JiraImport.get_issues_next_start_at(project.id)).to eq(2)
+        end
+      end
+
+      context 'when there is more than one page of results' do
+        before do
+          stub_const("#{described_class.name}::BATCH_SIZE", 2)
+        end
+
+        it 'schedules 3 import jobs' do
+          expect(subject).to receive(:fetch_issues).with(0).and_return([jira_issue1, jira_issue2])
+          expect(Gitlab::JiraImport::ImportIssueWorker).to receive(:perform_async).twice.times
+          expect(Gitlab::Cache::Import::Caching).to receive(:set_add).twice.times.and_call_original
+          expect(Gitlab::Cache::Import::Caching).to receive(:set_includes?).twice.times.and_call_original
+          allow_next_instance_of(Gitlab::JiraImport::IssueSerializer) do |instance|
+            allow(instance).to receive(:execute).and_return({ key: 'data' })
+          end
+
+          job_waiter = subject.execute
+
+          expect(job_waiter.jobs_remaining).to eq(2)
+          expect(Gitlab::JiraImport.get_issues_next_start_at(project.id)).to eq(2)
+        end
+      end
+
+      context 'when duplicate results are returned' do
+        before do
+          stub_const("#{described_class.name}::BATCH_SIZE", 2)
+        end
+
+        it 'schedules 2 import jobs' do
+          expect(subject).to receive(:fetch_issues).with(0).and_return([jira_issue1, jira_issue1])
+          expect(Gitlab::JiraImport::ImportIssueWorker).to receive(:perform_async).once
+          expect(Gitlab::Cache::Import::Caching).to receive(:set_add).once.and_call_original
+          expect(Gitlab::Cache::Import::Caching).to receive(:set_includes?).twice.times.and_call_original
+          allow_next_instance_of(Gitlab::JiraImport::IssueSerializer) do |instance|
+            allow(instance).to receive(:execute).and_return({ key: 'data' })
+          end
+
+          job_waiter = subject.execute
+
+          expect(job_waiter.jobs_remaining).to eq(1)
+          expect(Gitlab::JiraImport.get_issues_next_start_at(project.id)).to eq(2)
+        end
+      end
+    end
+  end
+end

spec/lib/gitlab/jira_import_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Gitlab::JiraImport do
+  let(:project_id) { 321 }
+
+  describe '.jira_issue_cache_key' do
+    it 'returns cache key for Jira issue imported to given project' do
+      expect(described_class.jira_issue_cache_key(project_id, 'DEMO-123')).to eq("jira-import/items-mapper/#{project_id}/issues/DEMO-123")
+    end
+  end
+
+  describe '.already_imported_cache_key' do
+    it 'returns cache key for already imported items' do
+      expect(described_class.already_imported_cache_key(:issues, project_id)).to eq("jira-importer/already-imported/#{project_id}/issues")
+    end
+  end
+
+  describe '.jira_issues_next_page_cache_key' do
+    it 'returns cache key for next issues' do
+      expect(described_class.jira_issues_next_page_cache_key(project_id)).to eq("jira-import/paginator/#{project_id}/issues")
+    end
+  end
+
+  describe '.get_issues_next_start_at', :clean_gitlab_redis_cache do
+    it 'returns zero when not defined' do
+      expect(Gitlab::Cache::Import::Caching.read("jira-import/paginator/#{project_id}/issues")).to be nil
+      expect(described_class.get_issues_next_start_at(project_id)).to eq(0)
+    end
+
+    it 'returns negative value for next issues to be imported starting point' do
+      Gitlab::Cache::Import::Caching.write("jira-import/paginator/#{project_id}/issues", -10)
+
+      expect(Gitlab::Cache::Import::Caching.read("jira-import/paginator/#{project_id}/issues")).to eq('-10')
+      expect(described_class.get_issues_next_start_at(project_id)).to eq(-10)
+    end
+
+    it 'returns cached value for next issues to be imported starting point' do
+      Gitlab::Cache::Import::Caching.write("jira-import/paginator/#{project_id}/issues", 10)
+
+      expect(Gitlab::Cache::Import::Caching.read("jira-import/paginator/#{project_id}/issues")).to eq('10')
+      expect(described_class.get_issues_next_start_at(project_id)).to eq(10)
+    end
+  end
+
+  describe '.store_issues_next_started_at', :clean_gitlab_redis_cache do
+    it 'stores nil value' do
+      described_class.store_issues_next_started_at(project_id, nil)
+
+      expect(Gitlab::Cache::Import::Caching.read("jira-import/paginator/#{project_id}/issues")).to eq ''
+      expect(Gitlab::Cache::Import::Caching.read("jira-import/paginator/#{project_id}/issues").to_i).to eq(0)
+    end
+
+    it 'stores positive value' do
+      described_class.store_issues_next_started_at(project_id, 10)
+
+      expect(Gitlab::Cache::Import::Caching.read("jira-import/paginator/#{project_id}/issues").to_i).to eq(10)
+    end
+
+    it 'stores negative value' do
+      described_class.store_issues_next_started_at(project_id, -10)
+
+      expect(Gitlab::Cache::Import::Caching.read("jira-import/paginator/#{project_id}/issues").to_i).to eq(-10)
+    end
+  end
+end

spec/support/shared_examples/lib/gitlab/jira_import/base_importer_shared_examples.rb

+# frozen_string_literal: true
+
+shared_examples 'raise exception if not implemented' do
+  it { expect { described_class.new(project).imported_items_cache_key }.not_to raise_error }
+end

spec/support/shared_examples/workers/gitlab/jira_import/jira_import_workers_shared_examples.rb

@@ -16,7 +16,7 @@ shared_examples 'exit import not started' do
   it 'does nothing, and exits' do
     expect(Gitlab::JiraImport::AdvanceStageWorker).not_to receive(:perform_async)
 
-    worker.perform(project.id)
+    described_class.new.perform(project.id)
   end
 end
 
@@ -25,8 +25,8 @@ shared_examples 'advance to next stage' do |next_stage|
 
   it "advances to #{next_stage} stage" do
     expect(Gitlab::JobWaiter).to receive(:new).and_return(job_waiter)
-    expect(Gitlab::JiraImport::AdvanceStageWorker).to receive(:perform_async).with(project.id, { job_waiter.key => job_waiter.jobs_remaining }, next_stage.to_sym)
+    expect(Gitlab::JiraImport::AdvanceStageWorker).to receive(:perform_async).with(project.id, { job_waiter.key => job_waiter.jobs_remaining }, next_stage.to_sym).and_return([])
 
-    worker.perform(project.id)
+    described_class.new.perform(project.id)
   end
 end

spec/workers/gitlab/jira_import/import_issue_worker_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Gitlab::JiraImport::ImportIssueWorker do
+  let_it_be(:user) { create(:user) }
+  let_it_be(:project) { create(:project) }
+
+  describe 'modules' do
+    it { expect(described_class).to include_module(ApplicationWorker) }
+    it { expect(described_class).to include_module(Gitlab::NotifyUponDeath) }
+    it { expect(described_class).to include_module(Gitlab::JiraImport::QueueOptions) }
+    it { expect(described_class).to include_module(Gitlab::Import::DatabaseHelpers) }
+  end
+
+  subject { described_class.new }
+
+  describe '#perform', :clean_gitlab_redis_cache do
+    let(:issue_attrs) { build(:issue, project_id: project.id).as_json.compact }
+
+    context 'when any exception raised while inserting to DB' do
+      before do
+        allow(subject).to receive(:insert_and_return_id).and_raise(StandardError)
+        expect(Gitlab::JobWaiter).to receive(:notify)
+
+        subject.perform(project.id, 123, issue_attrs, 'some-key')
+      end
+
+      it 'record a failed to import issue' do
+        expect(Gitlab::Cache::Import::Caching.read(Gitlab::JiraImport.failed_issues_counter_cache_key(project.id)).to_i).to eq(1)
+      end
+    end
+
+    context 'when record is successfully inserted' do
+      before do
+        subject.perform(project.id, 123, issue_attrs, 'some-key')
+      end
+
+      it 'does not record import failure' do
+        expect(Gitlab::Cache::Import::Caching.read(Gitlab::JiraImport.failed_issues_counter_cache_key(project.id)).to_i).to eq(0)
+      end
+    end
+  end
+end

spec/workers/gitlab/jira_import/stage/finish_import_worker_spec.rb

@@ -3,8 +3,8 @@
 require 'spec_helper'
 
 describe Gitlab::JiraImport::Stage::FinishImportWorker do
-  let(:project) { create(:project) }
-  let(:worker) { described_class.new }
+  let_it_be(:project) { create(:project) }
+  let_it_be(:worker) { described_class.new }
 
   describe 'modules' do
     it_behaves_like 'include import workers modules'
@@ -46,7 +46,7 @@ describe Gitlab::JiraImport::Stage::FinishImportWorker do
         it 'changes import state to finished' do
           worker.perform(project.id)
 
-          expect(project.reload.import_state.status).to eq "finished"
+          expect(project.reload.import_state.status).to eq("finished")
         end
 
         it 'removes force-import flag' do

spec/workers/gitlab/jira_import/stage/import_attachments_worker_spec.rb

@@ -3,8 +3,7 @@
 require 'spec_helper'
 
 describe Gitlab::JiraImport::Stage::ImportAttachmentsWorker do
-  let(:project) { create(:project) }
-  let(:worker) { described_class.new }
+  let_it_be(:project) { create(:project) }
 
   describe 'modules' do
     it_behaves_like 'include import workers modules'

spec/workers/gitlab/jira_import/stage/import_issues_worker_spec.rb

@@ -3,8 +3,8 @@
 require 'spec_helper'
 
 describe Gitlab::JiraImport::Stage::ImportIssuesWorker do
-  let(:project) { create(:project) }
-  let(:worker) { described_class.new }
+  let_it_be(:user) { create(:user) }
+  let_it_be(:project) { create(:project) }
 
   describe 'modules' do
     it_behaves_like 'include import workers modules'
@@ -30,11 +30,50 @@ describe Gitlab::JiraImport::Stage::ImportIssuesWorker do
         it_behaves_like 'exit import not started'
       end
 
-      context 'when import started' do
+      context 'when import started', :clean_gitlab_redis_cache do
+        let(:jira_import_data) do
+          data = JiraImportData.new
+          data << JiraImportData::JiraProjectDetails.new('XX', Time.now.strftime('%Y-%m-%d %H:%M:%S'), { user_id: user.id, name: user.name })
+          data
+        end
+        let(:project) { create(:project, import_data: jira_import_data) }
+        let!(:jira_service) { create(:jira_service, project: project) }
         let!(:import_state) { create(:import_state, status: :started, project: project) }
 
+        before do
+          allow_next_instance_of(Gitlab::JiraImport::IssuesImporter) do |instance|
+            allow(instance).to receive(:fetch_issues).and_return([])
+          end
+        end
+
+        context 'when start_at is nil' do
+          it_behaves_like 'advance to next stage', :attachments
+        end
+
+        context 'when start_at is zero' do
+          before do
+            allow(Gitlab::Cache::Import::Caching).to receive(:read).and_return(0)
+          end
+
+          it_behaves_like 'advance to next stage', :issues
+        end
+
+        context 'when start_at is greater than zero' do
+          before do
+            allow(Gitlab::Cache::Import::Caching).to receive(:read).and_return(25)
+          end
+
+          it_behaves_like 'advance to next stage', :issues
+        end
+
+        context 'when start_at is below zero' do
+          before do
+            allow(Gitlab::Cache::Import::Caching).to receive(:read).and_return(-1)
+          end
+
           it_behaves_like 'advance to next stage', :attachments
         end
       end
     end
+  end
 end

spec/workers/gitlab/jira_import/stage/import_labels_worker_spec.rb

@@ -3,8 +3,7 @@
 require 'spec_helper'
 
 describe Gitlab::JiraImport::Stage::ImportLabelsWorker do
-  let(:project) { create(:project) }
-  let(:worker) { described_class.new }
+  let_it_be(:project) { create(:project) }
 
   describe 'modules' do
     it_behaves_like 'include import workers modules'

spec/workers/gitlab/jira_import/stage/import_notes_worker_spec.rb

@@ -3,8 +3,7 @@
 require 'spec_helper'
 
 describe Gitlab::JiraImport::Stage::ImportNotesWorker do
-  let(:project) { create(:project) }
-  let(:worker) { described_class.new }
+  let_it_be(:project) { create(:project) }
 
   describe 'modules' do
     it_behaves_like 'include import workers modules'

spec/workers/gitlab/jira_import/stage/start_import_worker_spec.rb

@@ -3,7 +3,7 @@
 require 'spec_helper'
 
 describe Gitlab::JiraImport::Stage::StartImportWorker do
-  let(:project) { create(:project) }
+  let(:project) { create(:project, import_type: 'jira') }
   let(:worker) { described_class.new }
   let(:jid) { '12345678' }
 
@@ -24,13 +24,19 @@ describe Gitlab::JiraImport::Stage::StartImportWorker do
       end
     end
 
-    context 'when feature flag not enabled' do
+    context 'when feature flag enabled' do
+      let(:symbol_keys_project) do
+        { key: 'AA', scheduled_at: 2.days.ago.strftime('%Y-%m-%d %H:%M:%S'), scheduled_by: { 'user_id' => 1, 'name' => 'tester1' } }
+      end
+      let(:import_data) { JiraImportData.new( data: { 'jira' => { JiraImportData::FORCE_IMPORT_KEY => true, projects: [symbol_keys_project] } }) }
+
       before do
         stub_feature_flags(jira_issue_import: true)
       end
 
-      context 'when import is not scheudled' do
-        let!(:import_state) { create(:import_state, project: project, status: :none, jid: jid) }
+      context 'when import is not scheduled' do
+        let(:project) { create(:project, import_type: 'jira') }
+        let(:import_state) { create(:import_state, project: project, status: :none, jid: jid) }
 
         it 'exits because import not started' do
           expect(Gitlab::JiraImport::Stage::ImportLabelsWorker).not_to receive(:perform_async)
@@ -40,7 +46,20 @@ describe Gitlab::JiraImport::Stage::StartImportWorker do
       end
 
       context 'when import is scheduled' do
-        let!(:import_state) { create(:import_state, project: project, status: :scheduled, jid: jid) }
+        let(:import_state) { create(:import_state, status: :scheduled, jid: jid) }
+        let(:project) { create(:project, import_type: 'jira', import_state: import_state) }
+
+        context 'when this is a mirror sync in a jira imported project' do
+          it 'exits early' do
+            expect(Gitlab::Import::SetAsyncJid).not_to receive(:set_jid)
+            expect(Gitlab::JiraImport::Stage::ImportLabelsWorker).not_to receive(:perform_async)
+
+            worker.perform(project.id)
+          end
+        end
+
+        context 'when scheduled import is a hard triggered jira import and not a mirror' do
+          let!(:project) { create(:project, import_type: 'jira', import_data: import_data, import_state: import_state) }
 
           it 'advances to importing labels' do
             expect(Gitlab::JiraImport::Stage::ImportLabelsWorker).to receive(:perform_async)
@@ -48,9 +67,11 @@ describe Gitlab::JiraImport::Stage::StartImportWorker do
             worker.perform(project.id)
           end
         end
+      end
 
       context 'when import is started' do
-        let!(:import_state) { create(:import_state, project: project, status: :started, jid: jid) }
+        let!(:import_state) { create(:import_state, status: :started, jid: jid) }
+        let!(:project) { create(:project, import_type: 'jira', import_data: import_data, import_state: import_state) }
 
         context 'when this is the same worker that stated import' do
           it 'advances to importing labels' do
@@ -72,7 +93,8 @@ describe Gitlab::JiraImport::Stage::StartImportWorker do
       end
 
       context 'when import is finished' do
-        let!(:import_state) { create(:import_state, project: project, status: :finished, jid: jid) }
+        let!(:import_state) { create(:import_state, status: :finished, jid: jid) }
+        let!(:project) { create(:project, import_type: 'jira', import_data: import_data, import_state: import_state) }
 
         it 'advances to importing labels' do
           allow(worker).to receive(:jid).and_return(jid)