Handle jira service exceptions a little better

by not exposing any detailed information,
which might be a security issue

app/finders/projects/integrations/jira/issues_finder.rb

@@ -3,10 +3,10 @@
 module Projects
   module Integrations
     module Jira
-      IntegrationError = Class.new(StandardError)
-      RequestError = Class.new(StandardError)
-
       class IssuesFinder
+        IntegrationError = Class.new(StandardError)
+        RequestError = Class.new(StandardError)
+
         attr_reader :issues, :total_count, :per_page
 
         class << self

ee/app/controllers/projects/integrations/jira/issues_controller.rb

@@ -14,13 +14,14 @@ class IssuesController < Projects::ApplicationController
           push_frontend_feature_flag(:jira_integration, project)
         end
 
+        rescue_from ::Projects::Integrations::Jira::IssuesFinder::IntegrationError, with: :render_integration_error
+        rescue_from ::Projects::Integrations::Jira::IssuesFinder::RequestError, with: :render_request_error
+
         def index
           respond_to do |format|
             format.html
             format.json do
               render json: issues_json
-            rescue Projects::Integrations::Jira::IntegrationError, Projects::Integrations::Jira::RequestError => e
-              render_bad_request(e)
             end
           end
         end
@@ -72,8 +73,16 @@ def check_feature_enabled!
           return render_404 unless Feature.enabled?(:jira_integration, project) && project.external_issue_tracker
         end
 
-        def render_bad_request(error)
-          render json: { errors: [error.message] }, status: :bad_request
+        # Return the informational message to the user
+        def render_integration_error(exception)
+          render json: { errors: [exception.message] }, status: :bad_request
+        end
+
+        # Log the specific request error details and return generic message
+        def render_request_error(exception)
+          Gitlab::AppLogger.error(exception)
+
+          render json: { errors: [_('An error occurred while requesting data from the Jira service')] }, status: :bad_request
         end
       end
     end

ee/spec/controllers/projects/integrations/jira/issues_controller_spec.rb

@@ -66,7 +66,7 @@
 
       it 'renders bad request for IntegrationError' do
         expect_any_instance_of(Projects::Integrations::Jira::IssuesFinder).to receive(:execute)
-          .and_raise(Projects::Integrations::Jira::IntegrationError, 'Integration error')
+          .and_raise(Projects::Integrations::Jira::IssuesFinder::IntegrationError, 'Integration error')
 
         get :index, params: { namespace_id: project.namespace, project_id: project }, format: :json
 
@@ -76,12 +76,12 @@
 
       it 'renders bad request for RequestError' do
         expect_any_instance_of(Projects::Integrations::Jira::IssuesFinder).to receive(:execute)
-          .and_raise(Projects::Integrations::Jira::RequestError, 'Request error')
+          .and_raise(Projects::Integrations::Jira::IssuesFinder::RequestError, 'Request error')
 
         get :index, params: { namespace_id: project.namespace, project_id: project }, format: :json
 
         expect(response).to have_gitlab_http_status(:bad_request)
-        expect(json_response['errors']).to eq ['Request error']
+        expect(json_response['errors']).to eq ['An error occurred while requesting data from the Jira service']
       end
 
       it 'sets pagination headers' do

locale/gitlab.pot

@@ -2660,6 +2660,9 @@ msgstr ""
 msgid "An error occurred while reordering issues."
 msgstr ""
+msgid "An error occurred while requesting data from the Jira service"
+msgstr ""
+
 msgid "An error occurred while retrieving calendar activity"
 msgstr ""

spec/finders/projects/integrations/jira/issues_finder_spec.rb

@@ -24,7 +24,7 @@
 
     context 'when jira service integration does not have project_key' do
       it 'raises error' do
-        expect { subject }.to raise_error(Projects::Integrations::Jira::IntegrationError, 'Jira project key is not configured')
+        expect { subject }.to raise_error(Projects::Integrations::Jira::IssuesFinder::IntegrationError, 'Jira project key is not configured')
       end
     end
 
@@ -34,7 +34,7 @@
       end
 
       it 'raises error' do
-        expect { subject }.to raise_error(Projects::Integrations::Jira::IntegrationError, 'Jira service not configured.')
+        expect { subject }.to raise_error(Projects::Integrations::Jira::IssuesFinder::IntegrationError, 'Jira service not configured.')
       end
     end
 
@@ -55,7 +55,7 @@
         end
 
         it 'raises error', :aggregate_failures do
-          expect { subject }.to raise_error(Projects::Integrations::Jira::RequestError)
+          expect { subject }.to raise_error(Projects::Integrations::Jira::IssuesFinder::RequestError)
         end
       end