✨ feat(module manager): from plugin manager to module manager

3 files changed, 1637 insertions, 0 deletions

diff --git a/infra/exdata/CMakeLists.txt b/infra/exdata/CMakeLists.txt
index 2630f57..93e8c8f 100644
--- a/infra/exdata/CMakeLists.txt
+++ b/infra/exdata/CMakeLists.txt
@@ -1,3 +1,4 @@
 add_library(exdata exdata.c)
 
+# //TODO: Add test
 #add_subdirectory(test)
\ No newline at end of file
diff --git a/infra/exdata/test/CMakeLists.txt b/infra/exdata/test/CMakeLists.txt
new file mode 100644
index 0000000..323e29c
--- /dev/null
+++ b/infra/exdata/test/CMakeLists.txt
@@ -0,0 +1,19 @@
+add_executable(gtest_module_manager
+  module_manager_gtest_main.cpp
+)
+
+
+include_directories(${CMAKE_SOURCE_DIR}/infra/plugin_manager/)
+include_directories(${CMAKE_SOURCE_DIR}/infra/tuple/)
+
+target_link_libraries(
+  gtest_module_manager
+  module_manager
+  dl
+  "-rdynamic"
+  gtest
+  gmock
+)
+
+include(GoogleTest)
+gtest_discover_tests(gtest_module_manager)
\ No newline at end of file
diff --git a/infra/exdata/test/gtest_module_manager_main.cpp b/infra/exdata/test/gtest_module_manager_main.cpp
new file mode 100644
index 0000000..079f9e7
--- /dev/null
+++ b/infra/exdata/test/gtest_module_manager_main.cpp
@@ -0,0 +1,1617 @@
+#pragma GCC diagnostic ignored "-Wunused-parameter"
+
+#include <gtest/gtest.h>
+
+
+#include "module_manager/module_manager_interna.h"
+
+/***********************************
+ * TEST PLUGIN MANAGER INIT & EXIT *
+ ***********************************/
+
+//TODO: test case, plugin_specs_load
+
+TEST(plugin_manager_init, init_with_null_toml) {
+
+	struct stellar st={0};
+	struct plugin_manager_schema *plug_mgr = plugin_manager_init(&st, NULL);
+	//whitebox_test_plugin_manager_intrisic_metadata(&st, plug_mgr);
+	plugin_manager_exit(plug_mgr);
+}
+
+TEST(plugin_manager_init, init_with_empty_toml) {
+
+	struct stellar st={0};
+	struct plugin_manager_schema *plug_mgr = plugin_manager_init(&st, "/dev/null");
+	//whitebox_test_plugin_manager_intrisic_metadata(&st, plug_mgr);
+	plugin_manager_exit(plug_mgr);
+}
+
+#if 0
+
+/******************************************
+ * TEST PLUGIN MANAGER PACKET PLUGIN INIT *
+ ******************************************/
+
+static void test_mock_packet_exdata_free(int idx, void *ex_ptr, void *arg){}
+
+static void test_mock_overwrite_packet_exdata_free(int idx, void *ex_ptr, void *arg){}
+
+TEST(plugin_manager_init, packet_exdata_new_index_overwrite) {
+	struct stellar st={0};
+	struct plugin_manager_schema *plug_mgr = plugin_manager_init(&st, NULL, MAX_MSG_PER_STAGE);
+	whitebox_test_plugin_manager_intrisic_metadata(&st, plug_mgr);
+
+	const char *exdata_name="PACKET_EXDATA";
+	int exdata_idx=stellar_exdata_new_index(&st,exdata_name, test_mock_packet_exdata_free, &st);
+	EXPECT_GE(exdata_idx, 0);
+	int overwrite_idx=stellar_exdata_new_index(&st,exdata_name, test_mock_overwrite_packet_exdata_free, plug_mgr);
+	EXPECT_GE(overwrite_idx, 0);
+	EXPECT_EQ(overwrite_idx, exdata_idx);
+
+    {
+        SCOPED_TRACE("White-box test, check stellar internal schema");
+        struct exdata_meta *exdata_schema = (struct exdata_meta *)utarray_eltptr(
+            plug_mgr->exdata_schema->exdata_meta_array, (unsigned int)exdata_idx);
+        EXPECT_EQ(exdata_schema->free_func, (void *)test_mock_overwrite_packet_exdata_free);
+        EXPECT_EQ(exdata_schema->free_arg, plug_mgr);
+        EXPECT_EQ(exdata_schema->idx, exdata_idx);
+        EXPECT_STREQ(exdata_schema->name, exdata_name);
+
+        int exdata_num = utarray_len(plug_mgr->exdata_schema->exdata_meta_array);
+        EXPECT_EQ(exdata_num, 1);
+    }
+
+    plugin_manager_exit(plug_mgr);
+}
+
+void test_mock_packet_msg_free(void *msg, void *msg_free_arg){}
+void test_mock_overwrite_packet_msg_free(void *msg, void *msg_free_arg){}
+
+TEST(plugin_manager_init, stellar_mq_topic_create_and_update) {
+	struct stellar st={0};
+	struct plugin_manager_schema *plug_mgr = plugin_manager_init(&st, NULL, MAX_MSG_PER_STAGE);
+	whitebox_test_plugin_manager_intrisic_metadata(&st, plug_mgr);
+
+	const char *topic_name="PACKET_TOPIC";
+
+    EXPECT_EQ(stellar_mq_get_topic_id(&st, topic_name), -1); // illegal topic_name
+
+    int topic_id = stellar_mq_create_topic(&st, topic_name, NULL, NULL, test_mock_packet_msg_free, &st);
+    EXPECT_GE(topic_id, 0);
+    struct stellar_mq_topic_schema *topic_schema = NULL;
+    {
+        SCOPED_TRACE("White-box test, check stellar internal schema");
+        topic_schema =
+            (struct stellar_mq_topic_schema *)utarray_eltptr(plug_mgr->stellar_mq_schema_array, (unsigned int)topic_id);
+        EXPECT_EQ(topic_schema->free_cb, (void *)test_mock_packet_msg_free);
+        EXPECT_EQ(topic_schema->free_cb_arg, &st);
+        EXPECT_EQ(topic_schema->topic_id, topic_id);
+        EXPECT_STREQ(topic_schema->topic_name, topic_name);
+    }
+
+    EXPECT_EQ(stellar_mq_get_topic_id(&st, topic_name), topic_id);
+    EXPECT_EQ(stellar_mq_create_topic(&st, topic_name, NULL, NULL, test_mock_overwrite_packet_msg_free, plug_mgr),
+              -1); // duplicate create, return error
+    {
+        SCOPED_TRACE("White-box test, check stellar internal schema");
+        topic_schema =
+            (struct stellar_mq_topic_schema *)utarray_eltptr(plug_mgr->stellar_mq_schema_array, (unsigned int)topic_id);
+        EXPECT_EQ(topic_schema->free_cb, (void *)test_mock_packet_msg_free);
+        EXPECT_EQ(topic_schema->free_cb_arg, &st);
+        EXPECT_EQ(topic_schema->topic_id, topic_id);
+        EXPECT_STREQ(topic_schema->topic_name, topic_name);
+    }
+
+    EXPECT_EQ(stellar_mq_update_topic(&st, topic_id, NULL, NULL, test_mock_overwrite_packet_msg_free, plug_mgr), 0);
+
+    {
+        SCOPED_TRACE("White-box test, check stellar internal schema");
+        topic_schema =
+            (struct stellar_mq_topic_schema *)utarray_eltptr(plug_mgr->stellar_mq_schema_array, (unsigned int)topic_id);
+        EXPECT_EQ(topic_schema->free_cb, (void *)test_mock_overwrite_packet_msg_free);
+        EXPECT_EQ(topic_schema->free_cb_arg, plug_mgr);
+        EXPECT_EQ(topic_schema->topic_id, topic_id);
+        EXPECT_STREQ(topic_schema->topic_name, topic_name);
+        EXPECT_EQ(utarray_len(plug_mgr->stellar_mq_schema_array), 1+STELLAR_INTRINSIC_TOPIC_NUM);
+    }
+
+    EXPECT_EQ(stellar_mq_destroy_topic(&st, 10), -1); // illgeal topic_id
+
+    EXPECT_EQ(stellar_mq_destroy_topic(&st, topic_id), 1);
+    EXPECT_EQ(stellar_mq_destroy_topic(&st, topic_id), 0); // duplicate destroy, return 0;
+
+    {
+        SCOPED_TRACE("White-box test, check stellar internal schema");
+        EXPECT_EQ(utarray_len(plug_mgr->stellar_mq_schema_array), 1+STELLAR_INTRINSIC_TOPIC_NUM); // destory won't delete the topic schema
+    }
+    plugin_manager_exit(plug_mgr);
+}
+
+void test_mock_on_packet_msg(int topic_id, const void *msg, void *plugin_env){}
+void test_mock_overwrite_on_packet_msg(int topic_id, const void *msg, void *plugin_env){}
+
+TEST(plugin_manager_init, stellar_mq_subscribe) {
+
+	struct stellar st={0};
+	struct plugin_manager_schema *plug_mgr = plugin_manager_init(&st, NULL, MAX_MSG_PER_STAGE);
+	whitebox_test_plugin_manager_intrisic_metadata(&st, plug_mgr);
+
+
+	const char *topic_name="PACKET_TOPIC";
+
+	int topic_id=stellar_mq_create_topic(&st, topic_name, NULL, NULL, test_mock_packet_msg_free, &st);
+	EXPECT_GE(topic_id, 0);
+
+	EXPECT_EQ(stellar_mq_subscribe(&st, topic_id, test_mock_on_packet_msg, 10),-1);//illgeal plugin_id
+	EXPECT_EQ(stellar_mq_subscribe(&st, 10, test_mock_on_packet_msg, 10),-1);//illgeal topic_id & plugin_id
+
+	int plugin_id=stellar_plugin_register(&st, NULL, NULL,&st);
+	EXPECT_GE(plugin_id, 0);
+
+	EXPECT_EQ(stellar_mq_subscribe(&st, topic_id, test_mock_on_packet_msg, plugin_id),0);
+	EXPECT_EQ(stellar_mq_subscribe(&st, topic_id, test_mock_overwrite_on_packet_msg, plugin_id),0);//duplicate subscribe, return 0, won't overwrite
+	struct stellar_mq_topic_schema *topic_schema;
+    {
+        SCOPED_TRACE("White-box test, check stellar internal schema");
+        topic_schema = (struct stellar_mq_topic_schema *)utarray_eltptr(plug_mgr->stellar_mq_schema_array, (unsigned int)topic_id);
+        EXPECT_EQ(topic_schema->free_cb, (void *)test_mock_packet_msg_free);
+        EXPECT_EQ(topic_schema->free_cb_arg, &st);
+        EXPECT_EQ(topic_schema->topic_id, topic_id);
+        EXPECT_STREQ(topic_schema->topic_name, topic_name);
+    }
+
+    EXPECT_EQ(topic_schema->subscriber_cnt, 1);
+	EXPECT_EQ(topic_schema->subscribers->plugin_msg_cb, (void *)test_mock_overwrite_on_packet_msg);
+
+	plugin_manager_exit(plug_mgr);
+}
+
+
+static void test_mock_session_exdata_free(int idx, void *ex_ptr, void *arg){}
+static void test_mock_overwrite_session_exdata_free(int idx, void *ex_ptr, void *arg){}
+
+TEST(plugin_manager_init, session_exdata_new_index_overwrite) {
+	struct stellar st={0};
+	struct plugin_manager_schema *plug_mgr = plugin_manager_init(&st, NULL, MAX_MSG_PER_STAGE);
+	whitebox_test_plugin_manager_intrisic_metadata(&st, plug_mgr);
+
+	const char *exdata_name="SESSION_EXDATA";
+	int exdata_idx=stellar_exdata_new_index(&st,exdata_name, test_mock_session_exdata_free, &st);
+	EXPECT_GE(exdata_idx, 0);
+	int overwrite_idx=stellar_exdata_new_index(&st,exdata_name, test_mock_overwrite_session_exdata_free, plug_mgr);
+	EXPECT_GE(overwrite_idx, 0);
+	EXPECT_EQ(overwrite_idx, exdata_idx);
+
+    {
+        SCOPED_TRACE("White-box test, check stellar internal schema");
+        struct exdata_meta *exdata_schema = (struct exdata_meta *)utarray_eltptr(
+            plug_mgr->exdata_schema->exdata_meta_array, (unsigned int)exdata_idx);
+        EXPECT_EQ(exdata_schema->free_func, (void *)test_mock_overwrite_session_exdata_free);
+        EXPECT_EQ(exdata_schema->free_arg, plug_mgr);
+        EXPECT_EQ(exdata_schema->idx, exdata_idx);
+        EXPECT_STREQ(exdata_schema->name, exdata_name);
+
+        int exdata_num = utarray_len(plug_mgr->exdata_schema->exdata_meta_array);
+        EXPECT_EQ(exdata_num, 1);
+    }
+    plugin_manager_exit(plug_mgr);
+}
+
+void test_mock_session_msg_free(void *msg, void *msg_free_arg){}
+
+void test_mock_on_session_msg(int topic_id, const void *msg,void *plugin_env){}
+void test_mock_overwrite_on_session_msg(int topic_id, const void *msg, void *plugin_env){}
+
+
+TEST(plugin_manager_init, stellar_mq_subscribe_overwrite) {
+
+	struct stellar st={0};
+	struct plugin_manager_schema *plug_mgr = plugin_manager_init(&st, NULL, MAX_MSG_PER_STAGE);
+	whitebox_test_plugin_manager_intrisic_metadata(&st, plug_mgr);
+
+	const char *topic_name="SESSION_TOPIC";
+
+	int topic_id=stellar_mq_create_topic(&st, topic_name, NULL, NULL, test_mock_session_msg_free, &st);
+	EXPECT_GE(topic_id, 0);
+
+	EXPECT_EQ(stellar_mq_subscribe(&st, topic_id, test_mock_on_session_msg, 10),-1);//illgeal plugin_id
+	EXPECT_EQ(stellar_mq_subscribe(&st, 10, test_mock_on_session_msg, 10),-1);//illgeal topic_id & plugin_id
+
+	int plugin_id=stellar_plugin_register(&st, NULL, NULL, NULL);
+	EXPECT_GE(plugin_id, 0);
+
+	EXPECT_EQ(stellar_mq_subscribe(&st, topic_id, test_mock_on_session_msg, plugin_id),0);
+	EXPECT_EQ(stellar_mq_subscribe(&st, topic_id, test_mock_overwrite_on_session_msg, plugin_id),0);//duplicate subscribe, return 0, won't overwrite 
+
+	struct stellar_mq_topic_schema *topic_schema;
+	{
+		SCOPED_TRACE("White-box test, check stellar internal schema");
+		topic_schema = (struct stellar_mq_topic_schema *)utarray_eltptr(plug_mgr->stellar_mq_schema_array,(unsigned int)topic_id);
+		EXPECT_EQ(topic_schema->free_cb, (void *)test_mock_session_msg_free);
+		EXPECT_EQ(topic_schema->free_cb_arg, &st);
+		EXPECT_EQ(topic_schema->topic_id, topic_id);
+		EXPECT_STREQ(topic_schema->topic_name, topic_name);
+	}
+
+	EXPECT_EQ(topic_schema->subscriber_cnt, 1);
+	EXPECT_EQ(topic_schema->subscribers->plugin_msg_cb, (void *)test_mock_overwrite_on_session_msg);
+
+	plugin_manager_exit(plug_mgr);
+}
+
+/**********************************************
+ * TEST PLUGIN MANAGER ON POLLING PLUGIN INIT *
+ **********************************************/
+
+int test_plugin_on_polling_func(void *plugin_env)
+{
+	return 1;
+}
+
+TEST(plugin_manager_init, polling_plugin_register) {
+	struct stellar st={0};
+	struct plugin_manager_schema *plug_mgr = plugin_manager_init(&st, NULL, MAX_MSG_PER_STAGE);
+	st.plug_mgr=plug_mgr;
+	whitebox_test_plugin_manager_intrisic_metadata(&st, plug_mgr);
+
+	int plugin_id = stellar_polling_plugin_register(&st, test_plugin_on_polling_func, &st);
+    {
+        SCOPED_TRACE("White-box test, check stellar internal schema");
+		EXPECT_TRUE(plugin_id>=0);
+        struct registered_polling_plugin_schema *schema = (struct registered_polling_plugin_schema *)utarray_eltptr(
+            plug_mgr->registered_polling_plugin_array, (unsigned int)(plugin_id));
+        EXPECT_EQ(schema->on_polling, (void *)test_plugin_on_polling_func);
+        EXPECT_EQ(schema->plugin_env, &st);
+        EXPECT_EQ(utarray_len(plug_mgr->registered_polling_plugin_array), 1);
+    }
+
+    plugin_manager_exit(plug_mgr);
+}
+
+/*******************************************
+ * TEST PLUGIN MANAGER PACKET PLUGIN RUNTIME*
+ *******************************************/
+
+#define PACKET_PROTO_PLUGIN_NUM 128
+#define PACKET_EXDATA_NUM 2
+#define PACKET_TOPIC_NUM 2
+#define PACKET_MQ_SUB_NUM 2
+struct packet_plugin_env
+{
+	struct plugin_manager_schema *plug_mgr;
+	int basic_on_packet_called;
+	int proto_filter_plugin_id[PACKET_PROTO_PLUGIN_NUM];
+	int proto_filter_plugin_called[PACKET_PROTO_PLUGIN_NUM];
+	int exdata_set_on_packet_called;
+	int exdata_get_on_packet_called;
+	unsigned int packet_exdata_idx[PACKET_EXDATA_NUM];
+	int exdata_free_called[PACKET_EXDATA_NUM];
+	unsigned int packet_topic_id[PACKET_TOPIC_NUM];
+	unsigned int packet_mq_sub_plugin_id[PACKET_MQ_SUB_NUM];
+	int msg_pub_cnt;
+	int msg_sub_cnt;
+	int msg_free_cnt;
+};
+
+static void test_basic_on_packet(struct packet *pkt, void *plugin_env)
+{
+	struct packet_plugin_env *env = (struct packet_plugin_env *)plugin_env;
+	EXPECT_TRUE(env!=NULL);
+	//EXPECT_EQ(pkt->ip_proto, ip_protocol);
+	EXPECT_EQ(pkt->st, env->plug_mgr->st);
+	EXPECT_EQ(packet_exdata_set(pkt, 2, pkt), -1);// illegal set
+	EXPECT_EQ(packet_exdata_get(pkt, 2), nullptr);// illegal get
+	env->basic_on_packet_called+=1;
+	return;
+}
+
+TEST(plugin_manager, packet_plugin_illegal_exdata) {
+
+	struct stellar st={0};
+	struct plugin_manager_schema *plug_mgr = plugin_manager_init(&st, NULL, MAX_MSG_PER_STAGE);
+	whitebox_test_plugin_manager_intrisic_metadata(&st, plug_mgr);
+
+	unsigned char ip_proto=6;
+	struct packet_plugin_env env;
+	memset(&env, 0, sizeof(struct packet_plugin_env));
+	env.plug_mgr=plug_mgr;
+	int plugin_id=stellar_plugin_register(&st, test_basic_on_packet, NULL,&env);
+	EXPECT_GE(plugin_id, 0);
+
+    {
+        SCOPED_TRACE("White-box test, check stellar internal schema");
+        int packet_plugin_num = utarray_len(plug_mgr->registered_packet_plugin_array);
+        EXPECT_EQ(packet_plugin_num, 1);
+    }
+
+    struct packet pkt={&st, IPv4, ip_proto};
+	plugin_manager_on_packet_input(plug_mgr, &pkt);
+	plugin_manager_on_packet_output(plug_mgr, &pkt);
+	
+	plugin_manager_exit(plug_mgr);
+
+	EXPECT_EQ(env.basic_on_packet_called, 1);
+}
+
+static void test_proto_filter_on_packet(struct packet *pkt, void *plugin_env)
+{
+	struct packet_plugin_env *env = (struct packet_plugin_env *)plugin_env;
+	EXPECT_TRUE(env!=NULL);
+	//EXPECT_EQ(pkt->ip_proto, ip_protocol);
+	EXPECT_EQ(pkt->st, env->plug_mgr->st);
+	EXPECT_EQ(packet_exdata_set(pkt, 2, pkt), -1);// illegal set
+	EXPECT_EQ(packet_exdata_get(pkt, 2), nullptr);// illegal get
+	//env->proto_filter_plugin_called[ip_protocol]+=1;
+	return;
+}
+
+TEST(plugin_manager, DISABLED_packet_plugins_with_proto_filter) {
+
+	struct stellar st={0};
+	struct plugin_manager_schema *plug_mgr = plugin_manager_init(&st, NULL, MAX_MSG_PER_STAGE);
+	whitebox_test_plugin_manager_intrisic_metadata(&st, plug_mgr);
+
+	struct packet_plugin_env env;
+	memset(&env, 0, sizeof(struct packet_plugin_env));
+	env.plug_mgr=plug_mgr;
+
+	int proto_filter_plugin_num=(int)(sizeof(env.proto_filter_plugin_id) / sizeof(env.proto_filter_plugin_id[0]));
+    for (int i = 0; i < proto_filter_plugin_num; i++)
+    {
+        env.proto_filter_plugin_id[i] = stellar_plugin_register(&st, test_proto_filter_on_packet, NULL,&env);
+        EXPECT_GE(env.proto_filter_plugin_id[i], 0);
+
+
+    }
+
+	{
+        SCOPED_TRACE("White-box test, check stellar internal schema");
+        EXPECT_EQ(utarray_len(plug_mgr->registered_packet_plugin_array), proto_filter_plugin_num);
+    }
+
+    struct packet pkt={&st, IPv4, 0};
+
+	int N_packet=10;
+    for (int j = 0; j < N_packet; j++)
+    {
+        for (int i = 0; i < proto_filter_plugin_num; i++)
+        {
+            pkt.ip_proto = i;
+            plugin_manager_on_packet_input(plug_mgr, &pkt);
+            plugin_manager_on_packet_output(plug_mgr, &pkt);
+        }
+    }
+    plugin_manager_exit(plug_mgr);
+
+	for (int i = 0; i < proto_filter_plugin_num; i++)
+	{
+		EXPECT_EQ(env.proto_filter_plugin_called[i], N_packet);
+	}
+}
+
+
+struct test_exdata
+{
+	struct packet *pkt;
+	struct session *sess;
+	long long value;
+};
+
+static void test_exdata_set_on_packet(struct packet *pkt, void *plugin_env)
+{
+	struct packet_plugin_env *env = (struct packet_plugin_env *)plugin_env;
+	EXPECT_TRUE(env!=NULL);
+	//EXPECT_EQ(pkt->ip_proto, ip_protocol);
+	EXPECT_EQ(pkt->st, env->plug_mgr->st);
+	env->exdata_set_on_packet_called+=1;
+
+	int exdata_idx_len=(int)(sizeof(env->packet_exdata_idx) / sizeof(env->packet_exdata_idx[0]));
+
+	for(int i=0; i<exdata_idx_len; i++)
+	{
+		struct test_exdata *exdata_val=CALLOC(struct test_exdata , 1);
+		exdata_val->value=i;
+		exdata_val->pkt=pkt;
+		EXPECT_EQ(packet_exdata_set(pkt, env->packet_exdata_idx[i], exdata_val), 0);
+	}
+	return;
+}
+
+static void test_exdata_get_on_packet(struct packet *pkt, void *plugin_env)
+{
+	struct packet_plugin_env *env = (struct packet_plugin_env *)plugin_env;
+	EXPECT_TRUE(env!=NULL);
+	//EXPECT_EQ(pkt->ip_proto, ip_protocol);
+	EXPECT_EQ(pkt->st, env->plug_mgr->st);
+
+	int exdata_idx_len=(int)(sizeof(env->packet_exdata_idx) / sizeof(env->packet_exdata_idx[0]));
+	
+	for(int i=0; i<exdata_idx_len; i++)
+	{
+		struct test_exdata *exdata_val=(struct test_exdata *)packet_exdata_get(pkt, env->packet_exdata_idx[i]);
+		EXPECT_EQ(exdata_val->value, i);
+	}
+	env->exdata_get_on_packet_called+=1;
+	return;
+}
+
+static void test_packet_exdata_free(int idx, void *ex_ptr, void *arg)
+{
+	struct packet_plugin_env *env = (struct packet_plugin_env *)arg;
+	struct test_exdata *exdata_val=(struct test_exdata *)ex_ptr;
+	EXPECT_EQ(env->packet_exdata_idx[idx], idx);
+	EXPECT_EQ(exdata_val->value, idx);
+
+	EXPECT_EQ(packet_exdata_get(exdata_val->pkt, idx), nullptr);// illegal get in exdata_free callback
+	EXPECT_EQ(packet_exdata_set(exdata_val->pkt, idx, exdata_val->pkt), -1);// illegal set in exdata_free callback
+	
+	FREE(ex_ptr);
+	env->exdata_free_called[idx]+=1;
+
+	return;
+}
+
+
+TEST(plugin_manager, packet_plugins_share_exdata) {
+
+	struct stellar st={0};
+	struct plugin_manager_schema *plug_mgr = plugin_manager_init(&st, NULL, MAX_MSG_PER_STAGE);
+	whitebox_test_plugin_manager_intrisic_metadata(&st, plug_mgr);
+
+	unsigned char ip_proto=6;
+	struct packet_plugin_env env;
+	memset(&env, 0, sizeof(struct packet_plugin_env));
+	env.plug_mgr=plug_mgr;
+
+	char exdata_name[PACKET_EXDATA_NUM][TOPIC_NAME_MAX];
+	int exdata_idx_len=(int)(sizeof(env.packet_exdata_idx) / sizeof(env.packet_exdata_idx[0]));
+	for(int i=0; i<exdata_idx_len; i++)
+	{
+		sprintf(exdata_name[i], "PACKET_EXDATA_%d", i);
+		env.packet_exdata_idx[i]=stellar_exdata_new_index(&st, exdata_name[i], test_packet_exdata_free, &env);
+        {
+            SCOPED_TRACE("White-box test, check stellar internal schema");
+            struct exdata_meta *exdata_schema = (struct exdata_meta *)utarray_eltptr(
+                plug_mgr->exdata_schema->exdata_meta_array, env.packet_exdata_idx[i]);
+
+            EXPECT_EQ(exdata_schema->free_func, (void *)test_packet_exdata_free);
+            EXPECT_EQ(exdata_schema->free_arg, &env);
+            EXPECT_EQ(exdata_schema->idx, env.packet_exdata_idx[i]);
+            EXPECT_STREQ(exdata_schema->name, exdata_name[i]);
+        }
+    }
+
+    {
+        SCOPED_TRACE("White-box test, check stellar internal schema");
+        EXPECT_EQ(utarray_len(plug_mgr->exdata_schema->exdata_meta_array), exdata_idx_len);
+    }
+
+    int exdata_set_plugin_id=stellar_plugin_register(&st, test_exdata_set_on_packet, NULL,&env);
+	EXPECT_GE(exdata_set_plugin_id, 0);
+
+	int exdata_get_plugin_id=stellar_plugin_register(&st, test_exdata_get_on_packet, NULL,&env);
+	EXPECT_GE(exdata_get_plugin_id, 0);
+
+    {
+        SCOPED_TRACE("White-box test, check stellar internal schema");
+        EXPECT_EQ(utarray_len(plug_mgr->registered_packet_plugin_array), 2); // Fix plugin number
+    }
+
+    struct packet pkt={&st, IPv4, ip_proto};
+
+	int N_packet=10;
+
+	for(int i=0; i < N_packet; i++)
+	{
+		plugin_manager_on_packet_input(plug_mgr, &pkt);
+		plugin_manager_on_packet_output(plug_mgr, &pkt);
+	}
+	plugin_manager_exit(plug_mgr);
+
+	EXPECT_EQ(env.exdata_set_on_packet_called, N_packet);
+	EXPECT_EQ(env.exdata_get_on_packet_called, N_packet);
+
+	for(int i=0; i < exdata_idx_len; i++)
+	{
+		EXPECT_EQ(env.exdata_free_called[i], N_packet);
+	}
+}
+
+static void test_packet_msg_free_cb_func(void *msg, void *msg_free_arg)
+{
+	struct packet_plugin_env *env = (struct packet_plugin_env *)msg_free_arg;
+	env->msg_free_cnt+=1;
+	return;
+}
+
+static void test_mq_on_packet_msg(int topic_id, const void *msg, void *plugin_env)
+{
+	struct packet_plugin_env *env = (struct packet_plugin_env *)plugin_env;
+	EXPECT_TRUE(env!=NULL);
+	env->msg_sub_cnt+=1;
+	return;
+}
+
+static void test_mq_pub_on_packet(struct packet *pkt, void *plugin_env)
+{
+	struct packet_plugin_env *env = (struct packet_plugin_env *)plugin_env;
+	EXPECT_TRUE(env!=NULL);
+	//EXPECT_EQ(pkt->ip_proto, ip_protocol);
+	EXPECT_EQ(pkt->st, env->plug_mgr->st);
+	int topic_id_num=(int)(sizeof(env->packet_topic_id) / sizeof(env->packet_topic_id[0]));
+	for(int i=0; i<topic_id_num; i++)
+	{
+		EXPECT_EQ(stellar_mq_publish_message(env->plug_mgr->st, env->packet_topic_id[i], pkt), 0);
+		env->msg_pub_cnt+=1;
+	}
+	return;
+}
+
+TEST(plugin_manager, packet_plugins_mq_pub_sub) {
+
+	struct stellar st={0};
+	struct plugin_manager_schema *plug_mgr = plugin_manager_init(&st, NULL, MAX_MSG_PER_STAGE);
+	whitebox_test_plugin_manager_intrisic_metadata(&st, plug_mgr);
+
+	unsigned char ip_proto=6;
+	struct packet_plugin_env env;
+	memset(&env, 0, sizeof(struct packet_plugin_env));
+	env.plug_mgr=plug_mgr;
+	char topic_name[PACKET_TOPIC_NUM][TOPIC_NAME_MAX];
+
+	int topic_id_num=(int)(sizeof(env.packet_topic_id) / sizeof(env.packet_topic_id[0]));
+
+	for(int i=0; i<topic_id_num; i++)
+	{
+		sprintf(topic_name[i], "PACKET_TOPIC_%d", i);
+		env.packet_topic_id[i]=stellar_mq_create_topic(&st, topic_name[i], NULL, NULL, test_packet_msg_free_cb_func, &env);
+		EXPECT_GE(env.packet_topic_id[i], 0);
+        {
+            SCOPED_TRACE("White-box test, check stellar internal schema");
+            struct stellar_mq_topic_schema *topic = (struct stellar_mq_topic_schema *)utarray_eltptr(
+                plug_mgr->stellar_mq_schema_array, env.packet_topic_id[i]);
+            EXPECT_EQ(topic->free_cb, test_packet_msg_free_cb_func);
+            EXPECT_EQ(topic->free_cb_arg, &env);
+            EXPECT_EQ(topic->topic_id, env.packet_topic_id[i]);
+            EXPECT_STREQ(topic->topic_name, topic_name[i]);
+        }
+    }
+
+	{
+		SCOPED_TRACE("White-box test, check stellar internal schema");
+		EXPECT_EQ(utarray_len(plug_mgr->stellar_mq_schema_array), topic_id_num+STELLAR_INTRINSIC_TOPIC_NUM);
+	}
+
+	int pub_plugin_id=stellar_plugin_register(&st, test_mq_pub_on_packet, NULL,&env);
+	EXPECT_GE(pub_plugin_id, 0);
+
+	int topic_sub_num=(int)(sizeof(env.packet_mq_sub_plugin_id) / sizeof(env.packet_mq_sub_plugin_id[0]));
+
+    for (int i = 0; i < topic_sub_num; i++)
+    {
+        env.packet_mq_sub_plugin_id[i] = stellar_plugin_register(&st, NULL, NULL,&env);// empty on_packet is ok
+        EXPECT_GE(env.packet_mq_sub_plugin_id[i], 0);
+		for(int j = 0; j < topic_id_num; j++)
+		{
+			EXPECT_EQ(stellar_mq_subscribe(&st, env.packet_topic_id[j], test_mq_on_packet_msg, env.packet_mq_sub_plugin_id[i]), 0);
+		}
+    }
+
+	{
+		SCOPED_TRACE("White-box test, check stellar internal schema");
+		EXPECT_EQ(utarray_len(plug_mgr->registered_packet_plugin_array), topic_sub_num+1);
+	}
+
+	struct packet pkt={&st, IPv4, ip_proto};
+
+	int N_packet=10;
+    for (int i = 0; i < N_packet; i++)
+    {
+        plugin_manager_on_packet_input(plug_mgr, &pkt);
+        plugin_manager_on_packet_output(plug_mgr, &pkt);
+    }
+
+    plugin_manager_exit(plug_mgr);
+	EXPECT_EQ(N_packet*topic_id_num, env.msg_pub_cnt);
+	EXPECT_EQ(env.msg_free_cnt, env.msg_pub_cnt);
+	EXPECT_EQ(env.msg_sub_cnt, env.msg_pub_cnt*topic_sub_num);
+}
+
+static void overlimit_packet_msg_free_cb_func(void *msg, void *msg_free_arg)
+{
+	struct packet_plugin_env *env = (struct packet_plugin_env *)msg_free_arg;
+	env->msg_free_cnt+=1;
+	FREE(msg);
+	return;
+}
+
+static void overlimit_sub_on_packet_msg(int topic_id, const void *msg, void *plugin_env)
+{
+	struct packet_plugin_env *env = (struct packet_plugin_env *)plugin_env;
+	EXPECT_TRUE(env!=NULL);
+	env->msg_sub_cnt+=1;
+	return;
+}
+
+static void overlimit_pub_on_packet(struct packet *pkt, void *plugin_env)
+{
+	struct packet_plugin_env *env = (struct packet_plugin_env *)plugin_env;
+	EXPECT_TRUE(env!=NULL);
+	//EXPECT_EQ(pkt->ip_proto, ip_protocol);
+	int topic_id_num=(int)(sizeof(env->packet_topic_id) / sizeof(env->packet_topic_id[0]));
+	unsigned int cnt=0;
+	int *msg;
+	for(int i=0; i<topic_id_num; i++)
+	{
+		for(unsigned int j=0; j < env->plug_mgr->max_message_dispatch; j++)
+		{
+			msg=CALLOC(int, 1);
+			*msg=cnt;
+			int pub_ret=stellar_mq_publish_message(env->plug_mgr->st, env->packet_topic_id[i], msg);
+			if(cnt < env->plug_mgr->max_message_dispatch)
+			{
+				ASSERT_EQ(pub_ret, 0);
+				env->msg_pub_cnt+=1;
+			}
+			else
+			{
+				ASSERT_EQ(pub_ret, -1);
+			}
+			if(pub_ret!=0)FREE(msg);
+			cnt+=1;
+		}
+	}
+	return;
+}
+
+TEST(plugin_manager, packet_plugins_pub_overlimit) {
+
+	struct stellar st={0};
+	struct plugin_manager_schema *plug_mgr = plugin_manager_init(&st, NULL, MAX_MSG_PER_STAGE);
+	whitebox_test_plugin_manager_intrisic_metadata(&st, plug_mgr);
+
+	unsigned char ip_proto=6;
+	struct packet_plugin_env env;
+	memset(&env, 0, sizeof(struct packet_plugin_env));
+	env.plug_mgr=plug_mgr;
+	char topic_name[PACKET_TOPIC_NUM][TOPIC_NAME_MAX];
+
+	int topic_id_num=(int)(sizeof(env.packet_topic_id) / sizeof(env.packet_topic_id[0]));
+
+	for(int i=0; i<topic_id_num; i++)
+	{
+		sprintf(topic_name[i], "PACKET_TOPIC_%d", i);
+		env.packet_topic_id[i]=stellar_mq_create_topic(&st, topic_name[i], NULL,NULL,overlimit_packet_msg_free_cb_func, &env);
+		EXPECT_GE(env.packet_topic_id[i], 0);
+        {
+            SCOPED_TRACE("White-box test, check stellar internal schema");
+            struct stellar_mq_topic_schema *topic = (struct stellar_mq_topic_schema *)utarray_eltptr(
+                plug_mgr->stellar_mq_schema_array, env.packet_topic_id[i]);
+            EXPECT_EQ(topic->free_cb, overlimit_packet_msg_free_cb_func);
+            EXPECT_EQ(topic->free_cb_arg, &env);
+            EXPECT_EQ(topic->topic_id, env.packet_topic_id[i]);
+            EXPECT_STREQ(topic->topic_name, topic_name[i]);
+        }
+    }
+
+	{
+		SCOPED_TRACE("White-box test, check stellar internal schema");
+		EXPECT_EQ(utarray_len(plug_mgr->stellar_mq_schema_array), topic_id_num+STELLAR_INTRINSIC_TOPIC_NUM);
+	}
+
+	int pub_plugin_id=stellar_plugin_register(&st,  overlimit_pub_on_packet, NULL,&env);
+	EXPECT_GE(pub_plugin_id, 0);
+
+	int topic_sub_num=(int)(sizeof(env.packet_mq_sub_plugin_id) / sizeof(env.packet_mq_sub_plugin_id[0]));
+
+    for (int i = 0; i < topic_sub_num; i++)
+    {
+        env.packet_mq_sub_plugin_id[i] = stellar_plugin_register(&st, NULL, NULL, &env);// empty on_packet is ok
+        EXPECT_GE(env.packet_mq_sub_plugin_id[i], 0);
+		for(int j = 0; j < topic_id_num; j++)
+		{
+			EXPECT_EQ(stellar_mq_subscribe(&st, env.packet_topic_id[j], overlimit_sub_on_packet_msg, env.packet_mq_sub_plugin_id[i]), 0);
+		}
+    }
+
+	{
+		SCOPED_TRACE("White-box test, check stellar internal schema");
+		EXPECT_EQ(utarray_len(plug_mgr->registered_packet_plugin_array), topic_sub_num+1);
+	}
+
+	struct packet pkt={&st, IPv4, ip_proto};
+
+	int N_packet=10;
+    for (int i = 0; i < N_packet; i++)
+    {
+        plugin_manager_on_packet_input(plug_mgr, &pkt);
+        plugin_manager_on_packet_output(plug_mgr, &pkt);
+    }
+
+    plugin_manager_exit(plug_mgr);
+	EXPECT_EQ(N_packet*MAX_MSG_PER_STAGE, env.msg_pub_cnt);
+	EXPECT_EQ(env.msg_free_cnt, env.msg_pub_cnt);
+	EXPECT_EQ(env.msg_sub_cnt, env.msg_pub_cnt*topic_sub_num);
+}
+
+
+
+static void test_exdata_free_pub_msg_exdata_free(int idx, void *ex_ptr, void *arg)
+{
+	struct packet_plugin_env *env = (struct packet_plugin_env *)arg;
+	EXPECT_EQ(env->packet_exdata_idx[idx], idx);
+	env->exdata_free_called[idx]+=1;
+	EXPECT_EQ(stellar_mq_publish_message(env->plug_mgr->st, env->packet_topic_id[0], (struct packet *)ex_ptr), -1);// publish message in packet exdata_free is illegal
+	env->msg_pub_cnt+=1;
+	return;
+}
+
+static void test_exdata_free_pub_msg_free( void *msg, void *msg_free_arg)
+{
+	struct packet_plugin_env *env = (struct packet_plugin_env *)msg_free_arg;
+	env->msg_free_cnt+=1;
+	EXPECT_EQ(stellar_mq_publish_message(env->plug_mgr->st, env->packet_topic_id[0], msg), -1 );// publish message in packet msg_free is illegal
+	return;
+}
+
+static void test_exdata_free_pub_msg_on_packet(struct packet *pkt, void *plugin_env)
+{
+	struct packet_plugin_env *env = (struct packet_plugin_env *)plugin_env;
+	EXPECT_TRUE(env!=NULL);
+	//EXPECT_EQ(pkt->ip_proto, ip_protocol);
+	EXPECT_EQ(pkt->st, env->plug_mgr->st);
+	EXPECT_EQ(packet_exdata_set(pkt, env->packet_exdata_idx[0], pkt), 0);
+	env->basic_on_packet_called+=1;
+	return;
+}
+
+static void test_exdata_free_pub_msg_on_packet_msg(int topic_id, const void *msg, void *plugin_env)
+{
+	struct packet_plugin_env *env = (struct packet_plugin_env *)plugin_env;
+	EXPECT_EQ(topic_id, env->packet_topic_id[0]);
+	env->msg_sub_cnt+=1;
+}
+
+TEST(plugin_manager, packet_plugin_exdata_free_pub_msg) {
+
+	struct stellar st={0};
+	struct plugin_manager_schema *plug_mgr = plugin_manager_init(&st, NULL, MAX_MSG_PER_STAGE);
+	whitebox_test_plugin_manager_intrisic_metadata(&st, plug_mgr);
+
+	unsigned char ip_proto=6;
+	struct packet_plugin_env env;
+	memset(&env, 0, sizeof(struct packet_plugin_env));
+	env.plug_mgr=plug_mgr;
+	int plugin_id=stellar_plugin_register(&st, test_exdata_free_pub_msg_on_packet, NULL,&env);
+	EXPECT_GE(plugin_id, 0);
+
+	env.packet_exdata_idx[0]=stellar_exdata_new_index(&st, "PACKET_EXDATA", test_exdata_free_pub_msg_exdata_free, &env);
+	env.packet_topic_id[0]=stellar_mq_create_topic(&st, "PACKET_TOPIC", NULL, NULL, test_exdata_free_pub_msg_free, &env);
+
+	EXPECT_EQ(stellar_mq_subscribe(&st, env.packet_topic_id[0], test_exdata_free_pub_msg_on_packet_msg, plugin_id),0);
+	
+
+    struct packet pkt={&st, IPv4, ip_proto};
+	plugin_manager_on_packet_input(plug_mgr, &pkt);
+	plugin_manager_on_packet_output(plug_mgr, &pkt);
+	
+	plugin_manager_exit(plug_mgr);
+
+	EXPECT_EQ(env.basic_on_packet_called, 1);
+	EXPECT_EQ(env.msg_pub_cnt, 1);
+	EXPECT_EQ(env.msg_sub_cnt, 0);
+	EXPECT_EQ(env.msg_free_cnt, 0);
+	EXPECT_EQ(env.exdata_free_called[0], 1);
+}
+
+
+/**********************************************
+ * PESUDO SESSION MANAGER PLUGIN API *
+ **********************************************/
+
+struct session_manager_plugin_env
+{
+	struct stellar *st;
+	int N_session;
+	int N_per_session_pkt_cnt;
+	struct session sess[1024];
+
+	int session_manager_plugin_id;
+
+	int intrinsc_tcp_input_topic_id;
+	int intrinsc_tcp_output_topic_id;
+	int intrinsc_tcp_stream_topic_id;
+
+	int intrinsc_udp_input_topic_id;
+	int intrinsc_udp_output_topic_id;
+
+	int basic_exdata_idx;
+	int basic_exdata_free_called;
+	int basic_on_tcp_called;
+	int basic_ctx_new_called;
+	int basic_ctx_free_called;
+	int test_mq_pub_plugin_id;
+	int test_mq_sub_plugin_id;
+	int test_mq_pub_called;
+	int test_mq_sub_called;
+	int test_mq_free_called;
+	int test_mq_topic_id;
+	int plugin_id_1;
+	int plugin_id_2;
+	int plugin_id_1_called;
+	int plugin_id_2_called;
+	int exdata_ctx_1_id;
+	int exdata_ctx_2_id;
+};
+
+typedef void on_session_msg_cb_func(int topic_id, struct session *sess, void *plugin_env);
+
+static void pesudo_on_msg_dispatch(int topic_id, const void *msg, on_msg_cb_func* on_msg_cb, void *dispatch_arg, void *sub_plugin_env)
+{
+	on_session_msg_cb_func *session_cb = (on_session_msg_cb_func *)on_msg_cb;
+	struct session *sess=(struct session *)msg;
+	session_cb(topic_id, sess, sub_plugin_env);
+}
+static void pesudo_on_packet_input(struct packet *pkt, void *plugin_env)
+{
+	struct session_manager_plugin_env *env=(struct session_manager_plugin_env *)plugin_env;
+    for (int i = 0; i < env->N_session; i++)
+    {
+        stellar_mq_publish_message(env->st, env->intrinsc_tcp_input_topic_id, &env->sess[i]);
+    }
+}
+
+static void pesudo_on_packet_output(struct packet *pkt, void *plugin_env)
+{
+	struct session_manager_plugin_env *env=(struct session_manager_plugin_env *)plugin_env;
+    for (int i = 0; i < env->N_session; i++)
+    {
+        stellar_mq_publish_message(env->st, env->intrinsc_tcp_output_topic_id, &env->sess[i]);
+    }
+}
+
+static void pesudo_session_load(struct stellar *st, struct session_manager_plugin_env *env)
+{
+	env->st=st;
+	for(int i=0; i <env->N_session; i++)
+	{
+		env->sess[i].session_exdat_rt=session_exdata_runtime_new(st);
+		env->sess[i].type=SESSION_TYPE_TCP;
+	}
+	env->intrinsc_tcp_input_topic_id=stellar_mq_create_topic(st, TOPIC_TCP, pesudo_on_msg_dispatch, NULL, NULL, env);
+
+	env->session_manager_plugin_id=stellar_plugin_register(st, pesudo_on_packet_input, pesudo_on_packet_output, env);
+}
+
+void pesudo_session_unload(struct stellar *st, struct session_manager_plugin_env *env)
+{
+	for(int i=0; i <env->N_session; i++)
+	{
+		session_exdata_runtime_free(env->sess[i].session_exdat_rt);
+	}
+}
+
+static int pesudo_tcp_session_subscribe(struct stellar *st, on_session_msg_cb_func *on_session_cb, int plugin_id)
+{
+	int topic_id=stellar_mq_get_topic_id(st, TOPIC_TCP);
+	if(topic_id<0)
+	{
+		topic_id=stellar_mq_create_topic(st, TOPIC_TCP, pesudo_on_msg_dispatch, NULL, NULL, NULL);
+	}
+	return stellar_mq_subscribe(st, topic_id, (on_msg_cb_func *)on_session_cb, plugin_id);
+}
+
+/**********************************************
+ *  SESSION MANAGER PLUGIN RUNTIME *
+ **********************************************/
+
+
+TEST(plugin_manager, no_plugin_register_runtime) {
+
+	struct stellar st={0};
+
+// init stage
+	struct plugin_manager_schema *plug_mgr = plugin_manager_init(&st, NULL, MAX_MSG_PER_STAGE);
+	whitebox_test_plugin_manager_intrisic_metadata(&st, plug_mgr);
+
+
+// prepare packet and session
+
+	struct session_manager_plugin_env env;
+	memset(&env, 0, sizeof(struct session_manager_plugin_env));
+	env.N_per_session_pkt_cnt=10;
+	env.N_session=10;
+
+	struct packet pkt={&st, TCP, 6};
+
+// load session manager plugin
+	pesudo_session_load(&st, &env);
+
+    for (int j = 0; j < env.N_per_session_pkt_cnt; j++)
+    {
+        plugin_manager_on_packet_input(plug_mgr, &pkt);
+
+		plugin_manager_on_packet_output(plug_mgr, &pkt);
+
+    }
+
+// unload session manager plugin
+	pesudo_session_unload(&st, &env);
+
+//exit stage
+	plugin_manager_exit(plug_mgr);
+}
+
+
+static void test_basic_on_tcp_session(int topic_id, struct session *sess, void *plugin_env)
+{
+	struct session_manager_plugin_env *env = (struct session_manager_plugin_env *)plugin_env;
+	EXPECT_TRUE(env!=NULL);
+	if(sess)
+	{
+		EXPECT_EQ(session_exdata_set(sess, 2, sess), -1);// illegal set
+		EXPECT_EQ(session_exdata_get(sess, 2), nullptr);// illegal get
+		long long called = (long long )session_exdata_get(sess, env->basic_exdata_idx);
+		EXPECT_EQ(session_exdata_set(sess, env->basic_exdata_idx, (void *)(called+1)), 0);
+		env->basic_on_tcp_called+=1;
+	}
+	return;
+}
+
+static void test_basic_session_exdata_free(int idx, void *ex_ptr, void *arg)
+{
+	struct session_manager_plugin_env *env = (struct session_manager_plugin_env *)arg;
+	EXPECT_EQ(env->basic_exdata_idx, idx);
+	EXPECT_EQ((long long )ex_ptr, env->N_per_session_pkt_cnt);
+
+	env->basic_exdata_free_called+=1;
+}
+
+TEST(plugin_manager, session_plugin_on_tcp) {
+
+	struct stellar st={0};
+	struct plugin_manager_schema *plug_mgr = plugin_manager_init(&st, NULL,MAX_MSG_PER_STAGE);
+	whitebox_test_plugin_manager_intrisic_metadata(&st, plug_mgr);
+
+	unsigned char ip_proto=6;
+	struct session_manager_plugin_env env;
+	memset(&env, 0, sizeof(env));
+	env.N_per_session_pkt_cnt=10;
+	env.N_session=1;
+
+	int plugin_id=stellar_plugin_register(&st, NULL, NULL, &env);
+	EXPECT_GE(plugin_id, 0);
+
+	EXPECT_EQ(pesudo_tcp_session_subscribe(&st, test_basic_on_tcp_session, plugin_id), 0);
+
+	env.basic_exdata_idx=stellar_exdata_new_index(&st, "SESSION_EXDATA", test_basic_session_exdata_free,&env);
+	EXPECT_GE(env.basic_exdata_idx, 0);
+
+	struct packet pkt={&st, TCP, ip_proto};
+
+	pesudo_session_load(&st, &env);
+
+    for (int j = 0; j < env.N_per_session_pkt_cnt; j++)
+    {
+        plugin_manager_on_packet_input(plug_mgr, &pkt);
+		plugin_manager_on_packet_output(plug_mgr, &pkt);
+		plugin_manager_on_polling(plug_mgr);
+    }
+
+	pesudo_session_unload(&st, &env);
+
+	plugin_manager_exit(plug_mgr);
+
+	EXPECT_EQ(env.basic_on_tcp_called, env.N_session*env.N_per_session_pkt_cnt);
+	EXPECT_EQ(env.basic_exdata_free_called, env.N_session);
+
+}
+
+//TODO: test case, message pub overlimit 
+#if 0
+static void *test_overlimit_pub_session_ctx_new(struct session *sess, void *plugin_env)
+{
+	struct test_overlimit_session_mq_ctx *ctx=CALLOC(struct test_overlimit_session_mq_ctx, 1);
+	return ctx;
+}
+
+static void test_overlimit_pub_session_ctx_free(struct session *sess, void *session_ctx, void *plugin_env)
+{
+	struct session_plugin_env *env = (struct session_plugin_env *)plugin_env;
+	struct test_overlimit_session_mq_ctx *ctx=(struct test_overlimit_session_mq_ctx *)session_ctx;
+	EXPECT_EQ(ctx->pkt_cnt, env->N_per_session_pkt_cnt);
+	FREE(ctx);
+	return;
+}
+
+static void *test_overlimit_sub_session_ctx_new(struct session *sess, void *plugin_env)
+{
+	struct test_overlimit_session_mq_ctx *ctx=CALLOC(struct test_overlimit_session_mq_ctx, 1);
+	return ctx;
+}
+
+static void test_overlimit_sub_session_ctx_free(struct session *sess, void *session_ctx, void *plugin_env)
+{
+	struct session_plugin_env *env = (struct session_plugin_env *)plugin_env;
+	struct test_overlimit_session_mq_ctx *ctx=(struct test_overlimit_session_mq_ctx *)session_ctx;
+	EXPECT_EQ(ctx->sub_cnt, (env->N_per_session_pkt_cnt*(MAX_MSG_PER_DISPATCH-1))); //minus intrinsic msg
+	FREE(ctx);
+	return;
+}
+
+struct test_overlimit_msg
+{
+    struct session *sess;
+	int called;
+};
+
+static void test_overlimit_pub_on_session(int topic_id, const void *msg, void *plugin_env)
+{
+	struct session *sess=(struct session *)msg;
+	struct session_manager_plugin_env *env = (struct session_manager_plugin_env *)plugin_env;
+	struct test_overlimit_session_mq_ctx *ctx=(struct test_overlimit_session_mq_ctx *)msg;
+	EXPECT_TRUE(env!=NULL);
+	EXPECT_TRUE(ctx!=NULL);
+	struct test_overlimit_msg *pub_msg;
+    if (msg)
+    {
+        env->test_mq_pub_called += 1;
+        ctx->pkt_cnt += 1;
+		for(int i=0; i < MAX_MSG_PER_DISPATCH*2; i++)
+		{
+			pub_msg = CALLOC(struct test_overlimit_msg, 1);
+        	pub_msg->called = env->test_mq_pub_called;
+			pub_msg->sess=sess;
+			if(i<(MAX_MSG_PER_DISPATCH-1))// minus intrinsic msg
+			{
+        		EXPECT_EQ(stellar_mq_publish_message(env->plug_mgr->st, env->test_mq_topic_id, pub_msg), 0);
+				ctx->pub_cnt+=1;
+			}
+			else
+			{
+        		EXPECT_EQ(stellar_mq_publish_message(env->plug_mgr->st, env->test_mq_topic_id, pub_msg), -1);
+				FREE(pub_msg);
+			}
+		}
+    }
+    return;
+}
+
+static void test_overlimit_on_sub_msg(int topic_id, const void *msg, void *plugin_env)
+{
+	struct session_manager_plugin_env *env = (struct session_manager_plugin_env *)plugin_env;
+	struct test_overlimit_msg *recv_msg=(struct test_overlimit_msg *)msg;
+	struct test_overlimit_session_mq_ctx *ctx=(struct test_overlimit_session_mq_ctx *)msg;
+	EXPECT_TRUE(env!=NULL);
+	EXPECT_TRUE(ctx!=NULL);
+	EXPECT_EQ(recv_msg->called, env->test_mq_pub_called);
+	env->test_mq_sub_called+=1;
+	ctx->sub_cnt+=1;
+	return;
+}
+
+static void test_overlimit_session_msg_free(void *msg, void *msg_free_arg)
+{
+	struct session_manager_plugin_env *env = (struct session_manager_plugin_env *)msg_free_arg;
+	struct test_overlimit_msg *recv_msg=(struct test_overlimit_msg *)msg;
+	if(recv_msg)
+	{
+		EXPECT_EQ(stellar_mq_publish_message(env->plug_mgr->st, env->test_mq_topic_id, msg), -1);// illegal publish when msg_free
+		EXPECT_EQ(env->test_mq_pub_called, recv_msg->called);
+		env->test_mq_free_called+=1;
+		FREE(msg);
+	}
+	return;
+}
+
+TEST(plugin_manager,DISABLED_session_plugin_pub_msg_overlimt) {
+
+	struct stellar st={0};
+	struct plugin_manager_schema *plug_mgr = plugin_manager_init(&st, NULL, MAX_MSG_PER_STAGE);
+	whitebox_test_plugin_manager_intrisic_metadata(&st, plug_mgr);
+
+	unsigned char ip_proto=6;
+	struct session_manager_plugin_env env;
+	memset(&env, 0, sizeof(struct session_manager_plugin_env));
+	env.plug_mgr=plug_mgr;
+	env.N_per_session_pkt_cnt=10;
+	env.N_session=10;
+
+	env.test_mq_pub_plugin_id=stellar_plugin_register(&st, 0, NULL, NULL, &env);
+	EXPECT_GE(env.test_mq_pub_plugin_id, 0);
+
+	env.intrinsc_tcp_input_topic_id=stellar_mq_create_topic(&st, TOPIC_TCP_INPUT, NULL, NULL, NULL);
+	EXPECT_GE(env.intrinsc_tcp_input_topic_id, 0);
+	EXPECT_EQ(stellar_mq_subscribe(&st, env.intrinsc_tcp_input_topic_id, test_overlimit_pub_on_session, env.test_mq_pub_plugin_id), 0);
+
+	env.test_mq_topic_id=stellar_mq_create_topic(&st, "SESSION_MQ_TOPIC", NULL, test_overlimit_session_msg_free, &env);
+	EXPECT_GE(env.test_mq_topic_id, 0);
+
+	env.test_mq_sub_plugin_id=stellar_plugin_register(&st, 0, NULL, NULL,  &env);
+	EXPECT_GE(env.test_mq_sub_plugin_id, 0);
+	EXPECT_EQ(stellar_mq_subscribe(&st, env.test_mq_topic_id, test_overlimit_on_sub_msg, env.test_mq_sub_plugin_id), 0);
+
+	struct packet pkt={&st, TCP, ip_proto};
+
+
+	struct session sess[env.N_session];
+
+	for(int i=0; i < env.N_session; i++)
+	{
+		sess[i].session_exdat_rt=session_exdata_runtime_new(plug_mgr);
+		sess[i].type=SESSION_TYPE_TCP;
+	}
+
+    for (int j = 0; j < env.N_per_session_pkt_cnt; j++)
+    {
+        plugin_manager_on_packet_input(plug_mgr, &pkt);
+
+        for (int i = 0; i < env.N_session; i++)
+        {
+            stellar_mq_publish_message(&st, env.intrinsc_tcp_input_topic_id, &sess[i]);
+        }
+
+		plugin_manager_on_packet_output(plug_mgr, &pkt);
+    }
+
+    for(int i=0; i < env.N_session; i++)
+	{
+		session_exdata_runtime_free(sess[i].session_exdat_rt);
+	}
+
+	plugin_manager_exit(plug_mgr);
+
+	EXPECT_EQ(env.test_mq_pub_called,env.N_per_session_pkt_cnt*env.N_session);
+	EXPECT_EQ(env.test_mq_free_called, env.N_session*env.N_per_session_pkt_cnt*(MAX_MSG_PER_DISPATCH-1));
+	EXPECT_EQ(env.test_mq_sub_called, env.N_session*env.N_per_session_pkt_cnt*(MAX_MSG_PER_DISPATCH-1));
+
+}
+#endif
+
+
+//TODO: test case, publish msg on session closed
+#if 0
+struct test_session_closing_ctx
+{
+	int pkt_called;
+	int session_free_called;
+	int userdefine_on_msg_called;
+};
+
+static void *test_session_closing_ctx_new(struct session *sess, void *plugin_env)
+{
+	struct test_session_closing_ctx *ctx=CALLOC(struct test_session_closing_ctx, 1);
+	struct session_plugin_env *env = (struct session_plugin_env *)plugin_env;
+	env->basic_ctx_new_called+=1;
+	return ctx;
+}
+
+static void test_session_closing_ctx_free(struct session *sess, void *session_ctx, void *plugin_env)
+{
+	struct session_plugin_env *env = (struct session_plugin_env *)plugin_env;
+	env->basic_ctx_free_called+=1;
+	struct test_session_closing_ctx *ctx=(struct test_session_closing_ctx *)session_ctx;
+	EXPECT_EQ(ctx->pkt_called,env->N_per_session_pkt_cnt);
+	EXPECT_EQ(ctx->session_free_called,1);
+	FREE(ctx);
+}
+
+
+static void test_session_closing_on_session_free(struct session *sess, void *per_session_ctx, void *plugin_env)
+{
+	struct test_session_closing_ctx *ctx=(struct test_session_closing_ctx *)per_session_ctx;
+	struct session_plugin_env *env = (struct session_plugin_env *)plugin_env;
+	if(sess->state==SESSION_STATE_CLOSING)
+	{
+		ctx->session_free_called+=1;
+		stellar_mq_publish_message(env->plug_mgr->st, env->test_mq_topic_id, env);
+		env->test_mq_pub_called+=1;
+	}
+}
+
+
+static void test_session_closing_on_intrisic_msg( int topic_id, const void *msg,  void *plugin_env)
+{
+	struct test_session_closing_ctx *ctx=(struct test_session_closing_ctx *)msg;
+	if(msg)ctx->pkt_called+=1;
+}
+
+static void test_session_closing_on_userdefine_msg(int topic_id, const void *msg, void *plugin_env)
+{
+	struct test_session_closing_ctx *ctx=(struct test_session_closing_ctx *)msg;
+	struct session_manager_plugin_env *env = (struct session_manager_plugin_env *)plugin_env;
+	ctx->userdefine_on_msg_called+=1;
+	EXPECT_EQ(msg, plugin_env);
+	env->test_mq_sub_called+=1;
+}
+
+TEST(plugin_manager, DISABLED_session_plugin_pub_msg_on_closing) {
+
+	struct stellar st={0};
+	struct session_manager_plugin_env env;
+	memset(&env, 0, sizeof(struct session_manager_plugin_env));
+
+// pesudo init stage
+	struct plugin_manager_schema *plug_mgr = plugin_manager_init(&st, NULL, MAX_MSG_PER_STAGE);
+	whitebox_test_plugin_manager_intrisic_metadata(&st, plug_mgr);
+
+// plugin manager register plugin
+
+	int plugin_id=stellar_plugin_register(&st, 0, NULL, NULL, &env);
+	EXPECT_GE(plugin_id,0);
+
+	env.intrinsc_tcp_input_topic_id=stellar_mq_create_topic(&st, TOPIC_TCP_INPUT, NULL, NULL, NULL);
+	EXPECT_GE(env.intrinsc_tcp_input_topic_id, 0);
+	EXPECT_EQ(stellar_mq_subscribe(&st, env.intrinsc_tcp_input_topic_id, test_session_closing_on_intrisic_msg, plugin_id), 0);
+
+	env.test_mq_topic_id=stellar_mq_create_topic(&st, "SESSION_CLOSING_TOPIC", NULL, NULL, &env);
+	EXPECT_GE(env.test_mq_topic_id, 0);
+	EXPECT_EQ(stellar_mq_subscribe(&st, env.test_mq_topic_id, test_session_closing_on_userdefine_msg, plugin_id), 0);
+
+// pesudo packet and session
+
+	env.plug_mgr=plug_mgr;
+	env.N_per_session_pkt_cnt=10;
+	env.N_session=10;
+
+	struct packet pkt={&st, TCP, 6};
+
+	struct session sess[env.N_session];
+	memset(&sess, 0, sizeof(sess));
+
+// pesudo running stage
+	for(int i=0; i < env.N_session; i++)
+	{
+		sess[i].state=SESSION_STATE_OPENING;
+		sess[i].session_exdat_rt=session_exdata_runtime_new(plug_mgr);
+		sess[i].type=SESSION_TYPE_TCP;
+	}
+
+    for (int j = 0; j < env.N_per_session_pkt_cnt; j++)
+    {
+        plugin_manager_on_packet_input(plug_mgr, &pkt);
+
+        for (int i = 0; i < env.N_session; i++)
+        {
+			sess[i].sess_pkt_cnt+=1;
+			sess[i].state=SESSION_STATE_ACTIVE;
+            stellar_mq_publish_message(&st, env.intrinsc_tcp_input_topic_id, &sess[i]);
+        }
+
+		plugin_manager_on_packet_output(plug_mgr, &pkt);
+    }
+
+    for(int i=0; i < env.N_session; i++)
+	{
+		sess[i].state=SESSION_STATE_CLOSING;
+		session_exdata_runtime_free(sess[i].session_exdat_rt);
+	}
+
+// pesudo exit stage
+	plugin_manager_exit(plug_mgr);
+
+	//EXPECT_EQ(env.basic_ctx_new_called,env.N_session);
+	//EXPECT_EQ(env.basic_ctx_free_called,env.N_session);
+	//EXPECT_EQ(env.test_mq_pub_called,env.N_session);
+	//EXPECT_EQ(env.test_mq_sub_called,env.N_session);
+}
+
+#endif
+
+
+//TODO: test case, mq priority
+#if 0
+
+//test dettach session
+static void test_session_mq_priority_plugin_1_on_msg(int topic_id, const void *msg, void *plugin_env)
+{
+	struct session_plugin_env *env = (struct session_plugin_env *)plugin_env;	
+	env->plugin_id_1_called+=1;
+	if(topic_id == env->intrinsc_tcp_topic_id)
+	{
+        struct session *sess = (struct session *)msg;
+        struct test_session_called_ctx *ctx =
+            (struct test_session_called_ctx *)session_exdata_get(sess, env->exdata_ctx_1_id);
+        if (ctx == NULL)
+        {
+            ctx = CALLOC(struct test_session_called_ctx, 1);
+            session_exdata_set(sess, env->exdata_ctx_1_id, ctx);
+        }
+		ctx->called+=1;
+        EXPECT_EQ(ctx->called%3, 1);// intrinsc msg has high priority
+		EXPECT_EQ(stellar_mq_publish_message_with_priority(env->plug_mgr->st, env->test_mq_topic_id, (void *)(long)env->plugin_id_1, STELLAR_MQ_PRIORITY_LOW), 0);
+	}
+	if(topic_id == env->test_mq_topic_id)
+	{
+		if(ctx->called%3 == 2)
+		{
+			EXPECT_EQ((int)(long)msg, env->plugin_id_2);
+		}
+		if(ctx->called%3 == 0)
+		{
+			EXPECT_EQ((int )(long)msg, env->plugin_id_1);
+		}
+	}
+	return;
+}
+
+static void test_session_mq_priority_plugin_2_on_msg(int topic_id, const void *msg, void *plugin_env)
+{
+	struct session_plugin_env *env = (struct session_plugin_env *)plugin_env;	
+
+	env->plugin_id_2_called+=1;
+
+	if(topic_id == env->intrinsc_tcp_topic_id)
+	{
+        struct session *sess = (struct session *)msg;
+        struct test_session_called_ctx *ctx =
+            (struct test_session_called_ctx *)session_exdata_get(sess, env->exdata_ctx_2_id);
+        if (ctx == NULL)
+        {
+            ctx = CALLOC(struct test_session_called_ctx, 1);
+            session_exdata_set(sess, env->exdata_ctx_2_id, ctx);
+        }
+		ctx->called+=1;
+        EXPECT_EQ(ctx->called % 3, 1);
+        // publish msg has normal priority
+		EXPECT_EQ(stellar_mq_publish_message(env->plug_mgr->st, env->test_mq_topic_id, (void *)(long)env->plugin_id_2), 0);
+	}
+	if(topic_id == env->test_mq_topic_id)
+	{
+		if(ctx->called%3 == 2)
+		{
+			EXPECT_EQ((int)(long)msg, env->plugin_id_2);
+		}
+		if(ctx->called%3 == 0)
+		{
+			EXPECT_EQ((int)(long)msg, env->plugin_id_1);
+		}
+	}	
+	return;
+}
+
+TEST(plugin_manager, test_session_mq_priority) {
+
+	struct stellar st={0};
+	struct session_plugin_env env;
+	memset(&env, 0, sizeof(struct session_plugin_env));
+
+// pesudo init stage
+	struct plugin_manager_schema *plug_mgr = plugin_manager_init(&st, NULL, MAX_MSG_PER_STAGE);
+	whitebox_test_plugin_manager_intrisic_metadata(&st, plug_mgr);
+
+// plugin manager register plugin
+
+	int plugin_id_1=stellar_plugin_register(&st, 0,NULL, NULL, &env);
+	EXPECT_GE(plugin_id_1,0);
+
+	int plugin_id_2=stellar_plugin_register(&st, 0, NULL, NULL, &env);
+	EXPECT_GE(plugin_id_2,0);
+
+	env.plugin_id_1=plugin_id_1;
+	env.plugin_id_2=plugin_id_2;
+
+	env.exdata_ctx_1_id=stellar_exdata_new_index(&st, "SESSION_CTX_1", stellar_exdata_free_default, &env) ;
+	env.exdata_ctx_2_id=stellar_exdata_new_index(&st, "SESSION_CTX_2", stellar_exdata_free_default, &env) ;
+
+	env.intrinsc_tcp_topic_id=stellar_mq_create_topic(&st, TOPIC_TCP_INPUT, NULL, NULL, NULL);
+	EXPECT_GE(env.intrinsc_tcp_topic_id, 0);
+	EXPECT_EQ(stellar_mq_subscribe(&st, env.intrinsc_tcp_topic_id, test_session_mq_priority_plugin_1_on_msg, plugin_id_1), 0);
+	EXPECT_EQ(stellar_mq_subscribe(&st, env.intrinsc_tcp_topic_id, test_session_mq_priority_plugin_2_on_msg, plugin_id_2), 0);
+
+	env.test_mq_topic_id=stellar_mq_create_topic(&st, "SESSION_PRIORITY_TOPIC", NULL, &env);
+	EXPECT_GE(env.test_mq_topic_id, 0);
+	EXPECT_EQ(stellar_mq_subscribe(&st, env.test_mq_topic_id, test_session_mq_priority_plugin_1_on_msg, plugin_id_1), 0);
+	EXPECT_EQ(stellar_mq_subscribe(&st, env.test_mq_topic_id, test_session_mq_priority_plugin_2_on_msg, plugin_id_2), 0);
+
+// pesudo packet and session
+
+	env.plug_mgr=plug_mgr;
+	env.N_per_session_pkt_cnt=10;
+	env.N_session=10;
+
+	struct packet pkt={&st, TCP, 6};
+
+	struct session sess[env.N_session];
+	memset(&sess, 0, sizeof(sess));
+
+// pesudo running stage
+	for(int i=0; i < env.N_session; i++)
+	{
+		sess[i].state=SESSION_STATE_OPENING;
+		sess[i].session_exdat_rt=session_exdata_runtime_new(plug_mgr);
+		sess[i].type=SESSION_TYPE_TCP;
+	}
+
+    for (int j = 0; j < env.N_per_session_pkt_cnt; j++)
+    {
+        plugin_manager_on_packet_input(plug_mgr, &pkt);
+
+        for (int i = 0; i < env.N_session; i++)
+        {
+			sess[i].sess_pkt_cnt+=1;
+			sess[i].state=SESSION_STATE_ACTIVE;
+            stellar_mq_publish_message(&st, env.intrinsc_tcp_topic_id, &sess[i]);
+        }
+
+		plugin_manager_on_packet_output(plug_mgr, &pkt);
+    }
+
+    for(int i=0; i < env.N_session; i++)
+	{
+		sess[i].state=SESSION_STATE_CLOSING;
+		session_exdata_runtime_free(sess[i].session_exdat_rt);
+	}
+
+// pesudo exit stage
+	plugin_manager_exit(plug_mgr);
+
+	// each session publish TCP TOPIC per_session_pkt_cnt+1, and SESSION_PRIORITY_TOPIC 2*(msg per_session_pkt_cnt+1)
+	EXPECT_EQ(env.plugin_id_1_called,env.N_session*((env.N_per_session_pkt_cnt)*3));
+	EXPECT_EQ(env.plugin_id_2_called,env.N_session*((env.N_per_session_pkt_cnt)*3));
+
+}
+
+#endif
+
+// TODO: test case, session_exdata_free_pub_msg
+#if 0
+
+void test_session_exdata_free_pub_msg_exdata_free(int idx, void *ex_ptr, void *arg)
+{
+	struct session_manager_plugin_env *env = (struct session_manager_plugin_env *)arg;	
+	EXPECT_EQ(stellar_mq_publish_message(env->plug_mgr->st, env->intrinsc_tcp_input_topic_id, arg), -1);	
+	env->basic_exdata_free_called+=1;
+}
+
+static void test_session_exdata_free_pub_msg_on_session(int topic_id, const void *msg, void *plugin_env)
+{
+	struct session *sess=(struct session *)msg;
+	struct session_manager_plugin_env *env = (struct session_manager_plugin_env *)plugin_env;		
+	EXPECT_EQ(session_exdata_set(sess, env->basic_exdata_idx, sess), 0);
+	if(msg)env->plugin_id_1_called+=1;
+}
+
+TEST(plugin_manager, session_exdata_free_pub_msg) {
+
+	struct stellar st={0};
+	struct session_manager_plugin_env env;
+
+// pesudo init stage
+	struct plugin_manager_schema *plug_mgr = plugin_manager_init(&st, NULL, MAX_MSG_PER_STAGE);
+	whitebox_test_plugin_manager_intrisic_metadata(&st, plug_mgr);
+
+// plugin manager register plugin
+
+	env.plugin_id_1=stellar_plugin_register(&st, 0, NULL, NULL, &env);
+	EXPECT_GE(env.plugin_id_1,0);
+
+	env.intrinsc_tcp_input_topic_id=stellar_mq_create_topic(&st, TOPIC_TCP_INPUT, NULL, NULL, NULL);
+	EXPECT_GE(env.intrinsc_tcp_input_topic_id, 0);
+	EXPECT_EQ(stellar_mq_subscribe(&st, env.intrinsc_tcp_input_topic_id, test_session_exdata_free_pub_msg_on_session, env.plugin_id_1), 0);
+
+	env.basic_exdata_idx=stellar_exdata_new_index(&st, "BASIC_EXDATA", test_session_exdata_free_pub_msg_exdata_free, &env) ;
+	EXPECT_GE(env.basic_exdata_idx, 0);
+
+// pesudo packet and session
+
+	memset(&env, 0, sizeof(struct session_manager_plugin_env));
+	env.plug_mgr=plug_mgr;
+	env.N_per_session_pkt_cnt=10;
+	env.N_session=10;
+
+	struct packet pkt={&st, TCP, 6};
+
+	struct session sess[env.N_session];
+	memset(&sess, 0, sizeof(sess));
+
+// pesudo running stage
+	for(int i=0; i < env.N_session; i++)
+	{
+		sess[i].session_exdat_rt=session_exdata_runtime_new(plug_mgr);
+		sess[i].type=SESSION_TYPE_TCP;
+	}
+
+    for (int j = 0; j < env.N_per_session_pkt_cnt; j++)
+    {
+        plugin_manager_on_packet_input(plug_mgr, &pkt);
+
+        for (int i = 0; i < env.N_session; i++)
+        {
+			sess[i].sess_pkt_cnt+=1;
+            stellar_mq_publish_message(&st, env.intrinsc_tcp_input_topic_id, &sess[i]);
+        }
+
+		plugin_manager_on_packet_output(plug_mgr, &pkt);
+    }
+
+    for(int i=0; i < env.N_session; i++)
+	{
+		session_exdata_runtime_free(sess[i].session_exdat_rt);
+	}
+
+// pesudo exit stage
+	plugin_manager_exit(plug_mgr);
+
+	EXPECT_EQ(env.basic_exdata_free_called,env.N_session);
+	EXPECT_EQ(env.plugin_id_1_called,env.N_session*env.N_per_session_pkt_cnt);
+}
+
+
+#endif 
+
+/**********************************************
+ * TEST PLUGIN MANAGER ON POLLING PLUGIN RUNTIME *
+ **********************************************/
+
+struct polling_plugin_env
+{
+	struct plugin_manager_schema *plug_mgr;
+	int N_polling;
+	int return0_polling_called;
+	int return1_polling_called;
+};
+
+int return1_plugin_on_polling(void *plugin_env)
+{
+	struct polling_plugin_env *env = (struct polling_plugin_env *)plugin_env;
+	env->return1_polling_called+=1;
+	return 1;
+}
+
+int return0_plugin_on_polling(void *plugin_env)
+{
+	struct polling_plugin_env *env = (struct polling_plugin_env *)plugin_env;
+	env->return0_polling_called+=1;
+	return 0;
+}
+
+TEST(plugin_manager, basic_polling_plugins) {
+
+// pesudo init stage
+	struct stellar st={0};
+	struct plugin_manager_schema *plug_mgr = plugin_manager_init(&st, NULL, MAX_MSG_PER_STAGE);
+	st.plug_mgr=plug_mgr;
+	struct polling_plugin_env env;
+	memset(&env, 0, sizeof(struct polling_plugin_env));
+	env.plug_mgr=plug_mgr;
+	whitebox_test_plugin_manager_intrisic_metadata(&st, plug_mgr);
+
+// plugin manager register plugin
+	int plugin_id = stellar_polling_plugin_register(&st, return0_plugin_on_polling, &env);
+	EXPECT_TRUE(plugin_id>=0);
+	plugin_id = stellar_polling_plugin_register(&st, return1_plugin_on_polling, &env);
+	EXPECT_TRUE(plugin_id>=0);
+
+// pesudo runtime stage
+
+	env.plug_mgr=plug_mgr;
+	env.N_polling=10;
+
+	for(int i=0; i<env.N_polling; i++)
+	{
+		EXPECT_EQ(plugin_manager_on_polling(plug_mgr), 1);
+	}
+
+// pesudo exit stage
+	plugin_manager_exit(plug_mgr);
+
+	EXPECT_EQ(env.return0_polling_called,env.N_polling);
+	EXPECT_EQ(env.return1_polling_called,env.N_polling);
+
+}
+
+#endif 
+
+/**********************************************
+ * GTEST MAIN *
+ **********************************************/
+
+int main(int argc, char ** argv)
+{
+	int ret=0;
+	::testing::InitGoogleTest(&argc, argv);
+	ret=RUN_ALL_TESTS();
+	return ret;
+}
\ No newline at end of file