Expose Get/Set Listener Name in C API (apache#370)

Author: roryschadler

include/pulsar/c/client_configuration.h

@@ -187,6 +187,11 @@ PULSAR_PUBLIC int pulsar_client_configuration_is_validate_hostname(pulsar_client
 PULSAR_PUBLIC void pulsar_client_configuration_set_validate_hostname(pulsar_client_configuration_t *conf,
                                                                      int validateHostName);
 
+PULSAR_PUBLIC void pulsar_client_configuration_set_listener_name(pulsar_client_configuration_t *conf,
+                                                                 const char *listenerName);
+
+PULSAR_PUBLIC const char *pulsar_client_configuration_get_listener_name(pulsar_client_configuration_t *conf);
+
 /*
  * Get the stats interval set in the client.
  */

lib/c/c_ClientConfiguration.cc

@@ -189,3 +189,12 @@ void pulsar_client_configuration_set_memory_limit(pulsar_client_configuration_t
 unsigned long long pulsar_client_configuration_get_memory_limit(pulsar_client_configuration_t *conf) {
     return conf->conf.getMemoryLimit();
 }
+
+void pulsar_client_configuration_set_listener_name(pulsar_client_configuration_t *conf,
+                                                   const char *listenerName) {
+    conf->conf.setListenerName(listenerName);
+}
+
+const char *pulsar_client_configuration_get_listener_name(pulsar_client_configuration_t *conf) {
+    return conf->conf.getListenerName().c_str();
+}

tests/c/c_ClientConfigurationTest.cc

@@ -28,4 +28,7 @@ TEST(C_ClientConfigurationTest, testCApiConfig) {
 
     ASSERT_STREQ(pulsar_client_configuration_get_tls_private_key_file_path(conf), "private.key");
     ASSERT_STREQ(pulsar_client_configuration_get_tls_certificate_file_path(conf), "certificate.pem");
+
+    pulsar_client_configuration_set_listener_name(conf, "listenerName");
+    ASSERT_STREQ(pulsar_client_configuration_get_listener_name(conf), "listenerName");
 }