Strip messages of other exceptions in same Sentry event

Issue https://gitlab.com/gitlab-org/gitlab/-/issues/332822
Changelog: fixed

lib/gitlab/error_tracking/processor/grpc_error_processor.rb

@@ -35,7 +35,12 @@ module Gitlab
 
             # Worse in new version, no setter! Have to poke at the
             # instance variable
-            exception.value = message if message
+            if message.present?
+              exceptions.each do |exception|
+                exception.value = message if valid_exception?(exception)
+              end
+            end
+
             event.extra[:grpc_debug_error_string] = debug_str if debug_str
           end
 

spec/lib/gitlab/error_tracking/processor/grpc_error_processor_spec.rb

@@ -15,6 +15,18 @@ RSpec.describe Gitlab::ErrorTracking::Processor::GrpcErrorProcessor do
     let(:event) { Raven::Event.from_exception(exception, required_options.merge(data)) }
     let(:result_hash) { described_class.call(event).to_hash }
 
+    let(:data) do
+      {
+        extra: {
+          caller: 'test'
+        },
+        fingerprint: [
+          'GRPC::DeadlineExceeded',
+          '4:Deadline Exceeded. debug_error_string:{"created":"@1598938192.005782000","description":"Error received from peer unix:/home/git/gitalypraefect.socket","file":"src/core/lib/surface/call.cc","file_line":1055,"grpc_message":"Deadline Exceeded","grpc_status":4}'
+        ]
+      }
+    end
+
     context 'when there is no GRPC exception' do
       let(:exception) { RuntimeError.new }
       let(:data) { { fingerprint: ['ArgumentError', 'Missing arguments'] } }
@@ -24,19 +36,47 @@ RSpec.describe Gitlab::ErrorTracking::Processor::GrpcErrorProcessor do
       end
     end
 
-    context 'when there is a GPRC exception with a debug string' do
+    context 'when there is a GRPC exception with a debug string' do
       let(:exception) { GRPC::DeadlineExceeded.new('Deadline Exceeded', {}, '{"hello":1}') }
 
+      it 'removes the debug error string and stores it as an extra field' do
+        expect(result_hash[:fingerprint])
+          .to eq(['GRPC::DeadlineExceeded', '4:Deadline Exceeded.'])
+
+        expect(result_hash[:exception][:values].first)
+          .to include(type: 'GRPC::DeadlineExceeded', value: '4:Deadline Exceeded.')
+
+        expect(result_hash[:extra])
+          .to include(caller: 'test', grpc_debug_error_string: '{"hello":1}')
+      end
+
+      context 'with no custom fingerprint' do
         let(:data) do
-        {
-          extra: {
-            caller: 'test'
-          },
-          fingerprint: [
-            'GRPC::DeadlineExceeded',
-            '4:Deadline Exceeded. debug_error_string:{"created":"@1598938192.005782000","description":"Error received from peer unix:/home/git/gitalypraefect.socket","file":"src/core/lib/surface/call.cc","file_line":1055,"grpc_message":"Deadline Exceeded","grpc_status":4}'
-          ]
-        }
+          { extra: { caller: 'test' } }
+        end
+
+        it 'removes the debug error string and stores it as an extra field' do
+          expect(result_hash).not_to include(:fingerprint)
+
+          expect(result_hash[:exception][:values].first)
+            .to include(type: 'GRPC::DeadlineExceeded', value: '4:Deadline Exceeded.')
+
+          expect(result_hash[:extra])
+            .to include(caller: 'test', grpc_debug_error_string: '{"hello":1}')
+        end
+      end
+    end
+
+    context 'when there is a wrapped GRPC exception with a debug string' do
+      let(:inner_exception) { GRPC::DeadlineExceeded.new('Deadline Exceeded', {}, '{"hello":1}') }
+      let(:exception) do
+        begin
+          raise inner_exception
+        rescue GRPC::DeadlineExceeded
+          raise StandardError.new, inner_exception.message
+        end
+      rescue StandardError => e
+        e
       end
 
       it 'removes the debug error string and stores it as an extra field' do
@@ -46,6 +86,9 @@ RSpec.describe Gitlab::ErrorTracking::Processor::GrpcErrorProcessor do
         expect(result_hash[:exception][:values].first)
           .to include(type: 'GRPC::DeadlineExceeded', value: '4:Deadline Exceeded.')
 
+        expect(result_hash[:exception][:values].second)
+          .to include(type: 'StandardError', value: '4:Deadline Exceeded.')
+
         expect(result_hash[:extra])
           .to include(caller: 'test', grpc_debug_error_string: '{"hello":1}')
       end
@@ -61,6 +104,9 @@ RSpec.describe Gitlab::ErrorTracking::Processor::GrpcErrorProcessor do
           expect(result_hash[:exception][:values].first)
             .to include(type: 'GRPC::DeadlineExceeded', value: '4:Deadline Exceeded.')
 
+          expect(result_hash[:exception][:values].second)
+            .to include(type: 'StandardError', value: '4:Deadline Exceeded.')
+
           expect(result_hash[:extra])
             .to include(caller: 'test', grpc_debug_error_string: '{"hello":1}')
         end