fix: add rescue for OpenSSL errors during export (#884)

Closes #883.

Signed-off-by: Robb Kidd <[email protected]>

Author: robbkidd

exporter/otlp/lib/opentelemetry/exporter/otlp/exporter.rb

@@ -199,6 +199,9 @@ def send_bytes(bytes, timeout:) # rubocop:disable Metrics/AbcSize, Metrics/Cyclo
           rescue Net::OpenTimeout, Net::ReadTimeout
             retry if backoff?(retry_count: retry_count += 1, reason: 'timeout')
             return FAILURE
+          rescue OpenSSL::SSL::SSLError
+            retry if backoff?(retry_count: retry_count += 1, reason: 'openssl_error')
+            return FAILURE
           rescue SocketError
             retry if backoff?(retry_count: retry_count += 1, reason: 'socket_error')
             return FAILURE

exporter/otlp/test/opentelemetry/exporter/otlp/exporter_test.rb

@@ -182,6 +182,14 @@
       _(result).must_equal(FAILURE)
     end
 
+    it 'returns FAILURE when encryption to receiver endpoint fails' do
+      stub_request(:post, 'https://localhost:4317/v1/traces').to_raise(OpenSSL::SSL::SSLError.new('enigma wedged'))
+      span_data = create_span_data
+      exporter.stub(:backoff?, ->(**_) { false }) do
+        _(exporter.export([span_data])).must_equal(FAILURE)
+      end
+    end
+
     it 'exports a span_data' do
       stub_request(:post, 'https://localhost:4317/v1/traces').to_return(status: 200)
       span_data = create_span_data