lib/fluent/plugin/out_kafka.rb in roched-fluent-plugin-kafka-0.6.8 vs lib/fluent/plugin/out_kafka.rb in roched-fluent-plugin-kafka-0.6.9

@@ -95,15 +95,15 @@
       z.close
       log.info "brokers has been refreshed via Zookeeper: #{@seed_brokers}"
     end
     begin
       if @seed_brokers.length > 0
-        if @scram_mechanism && @username && @password
+        if @scram_mechanism != nil && @username != nil && @password != nil
           log.info "using scram authentication"
           @kafka = Kafka.new(seed_brokers: @seed_brokers, client_id: @client_id, ssl_ca_cert: read_ssl_file(@ssl_ca_cert),
                              ssl_client_cert: read_ssl_file(@ssl_client_cert), ssl_client_cert_key: read_ssl_file(@ssl_client_cert_key),
                              sasl_scram_username: @username, sasl_scram_password: @password, sasl_scram_mechanism: @scram_mechanism)
-        elseif @username && @password
+        elseif @username != nil && @password != nil
           log.info "using plain authentication"
           @kafka = Kafka.new(seed_brokers: @seed_brokers, client_id: @client_id, ssl_ca_cert: read_ssl_file(@ssl_ca_cert),
                              ssl_client_cert: read_ssl_file(@ssl_client_cert), ssl_client_cert_key: read_ssl_file(@ssl_client_cert_key),
                              sasl_plain_username: @username, sasl_plain_password: @password)
         else