/* Copyright (c) 2014, 2019, Oracle and/or its affiliates. All rights reserved.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License, version 2.0,
   as published by the Free Software Foundation.

   This program is also distributed with certain software (including
   but not limited to OpenSSL) that is licensed under separate terms,
   as designated in a particular file or component or in included license
   documentation.  The authors of MySQL hereby grant you an additional
   permission to link the program and your derivative works with the
   separately licensed software that they have included with MySQL.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License, version 2.0, for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
*/

#include <gtest/gtest.h>
#include <stddef.h>
#include <string>
#include <vector>

#include "my_inttypes.h"
#include "plugin/group_replication/include/member_info.h"
#include "plugin/group_replication/include/services/notification/notification.h"

using std::string;
using std::vector;

namespace gcs_member_info_unittest {

class ClusterMemberInfoTest : public ::testing::Test {
 protected:
  ClusterMemberInfoTest() {}

  virtual void SetUp() {
    string hostname("pc_hostname");
    string uuid("781f947c-db4a-11e3-98d1-f01faf1a1c44");
    uint port = 4444;
    uint plugin_version = 0x000400;
    uint write_set_algorithm = 1;
    string executed_gtid("aaaa:1-10");
    string purged_gtid("pppp:1-9");
    uint lower_case_table_names = 0;
    bool default_table_encryption = false;
    string retrieved_gtid("bbbb:1-10");
    ulonglong gtid_assignment_block_size = 9223372036854775807ULL;
    bool in_primary_mode = false;
    bool has_enforces_update_everywhere_checks = false;
    uint member_weight = 70;

    gcs_member_id = new Gcs_member_identifier("stuff");

    Group_member_info::Group_member_status status =
        Group_member_info::MEMBER_OFFLINE;

    Member_version local_member_plugin_version(plugin_version);
    local_node = new Group_member_info(
        hostname.c_str(), port, uuid.c_str(), write_set_algorithm,
        gcs_member_id->get_member_id(), status, local_member_plugin_version,
        gtid_assignment_block_size, Group_member_info::MEMBER_ROLE_PRIMARY,
        in_primary_mode, has_enforces_update_everywhere_checks, member_weight,
        lower_case_table_names, default_table_encryption, PSI_NOT_INSTRUMENTED);
    local_node->update_gtid_sets(executed_gtid, purged_gtid, retrieved_gtid);
  }

  virtual void TearDown() {
    delete gcs_member_id;
    delete local_node;
  }

  Group_member_info *local_node;
  Gcs_member_identifier *gcs_member_id;
};

TEST_F(ClusterMemberInfoTest, EncodeDecodeIdempotencyTest) {
  vector<uchar> *encoded = new vector<uchar>();
  local_node->encode(encoded);

  Group_member_info decoded_local_node(&encoded->front(), encoded->size(),
                                       PSI_NOT_INSTRUMENTED);

  ASSERT_EQ(local_node->get_port(), decoded_local_node.get_port());
  ASSERT_EQ(local_node->get_hostname(), decoded_local_node.get_hostname());
  ASSERT_EQ(local_node->get_uuid(), decoded_local_node.get_uuid());
  ASSERT_EQ(local_node->get_write_set_extraction_algorithm(),
            decoded_local_node.get_write_set_extraction_algorithm());
  ASSERT_EQ(local_node->get_gcs_member_id().get_member_id(),
            decoded_local_node.get_gcs_member_id().get_member_id());
  ASSERT_EQ(local_node->get_recovery_status(),
            decoded_local_node.get_recovery_status());
  ASSERT_EQ(local_node->get_member_version().get_version(),
            decoded_local_node.get_member_version().get_version());
  ASSERT_EQ(local_node->get_gtid_executed(),
            decoded_local_node.get_gtid_executed());
  ASSERT_EQ(local_node->get_gtid_purged(),
            decoded_local_node.get_gtid_purged());
  ASSERT_EQ(local_node->get_gtid_retrieved(),
            decoded_local_node.get_gtid_retrieved());
  ASSERT_EQ(local_node->get_gtid_assignment_block_size(),
            decoded_local_node.get_gtid_assignment_block_size());
  ASSERT_EQ(local_node->get_role(), decoded_local_node.get_role());
  ASSERT_EQ(local_node->get_member_weight(),
            decoded_local_node.get_member_weight());

  delete encoded;
}

class ClusterMemberInfoManagerTest : public ::testing::Test {
 protected:
  ClusterMemberInfoManagerTest() {}

  virtual void SetUp() {
    string hostname("pc_hostname");
    string uuid("8d7r947c-dr4a-17i3-59d1-f01faf1kkc44");
    uint port = 4444;
    uint write_set_algorithm = 1;
    uint lower_case_table_names = 0;
    bool default_table_encryption = false;
    uint plugin_version = 0x000400;
    gcs_member_id = new Gcs_member_identifier("stuff");
    ulonglong gtid_assignment_block_size = 9223372036854775807ULL;
    bool in_primary_mode = false;
    bool has_enforces_update_everywhere_checks = false;
    uint member_weight = 80;

    Group_member_info::Group_member_status status =
        Group_member_info::MEMBER_OFFLINE;

    Member_version local_member_plugin_version(plugin_version);
    local_node = new Group_member_info(
        hostname.c_str(), port, uuid.c_str(), write_set_algorithm,
        gcs_member_id->get_member_id(), status, local_member_plugin_version,
        gtid_assignment_block_size, Group_member_info::MEMBER_ROLE_SECONDARY,
        in_primary_mode, has_enforces_update_everywhere_checks, member_weight,
        lower_case_table_names, default_table_encryption, PSI_NOT_INSTRUMENTED);

    cluster_member_mgr =
        new Group_member_info_manager(local_node, PSI_NOT_INSTRUMENTED);
  }

  virtual void TearDown() {
    delete cluster_member_mgr;
    delete gcs_member_id;
    delete local_node;
  }

  Group_member_info_manager_interface *cluster_member_mgr;
  Group_member_info *local_node;
  Gcs_member_identifier *gcs_member_id;
};

TEST_F(ClusterMemberInfoManagerTest, GetLocalInfoByUUIDTest) {
  // Add another member info in order to make this test more realistic
  string hostname("pc_hostname2");
  string uuid("781f947c-db4a-22e3-99d4-f01faf1a1c44");
  uint port = 4444;
  uint write_set_algorithm = 1;
  uint lower_case_table_names = 0;
  bool default_table_encryption = false;
  uint plugin_version = 0x000400;
  Gcs_member_identifier gcs_member_id("another_stuff");
  string executed_gtid("aaaa:1-11");
  string purged_gtid("pppp:1-8");
  string retrieved_gtid("bbbb:1-11");
  ulonglong gtid_assignment_block_size = 9223372036854775807ULL;
  bool in_primary_mode = false;
  bool has_enforces_update_everywhere_checks = false;
  uint member_weight = 90;

  Group_member_info::Group_member_status status =
      Group_member_info::MEMBER_OFFLINE;

  Member_version local_member_plugin_version(plugin_version);
  Group_member_info *new_member = new Group_member_info(
      hostname.c_str(), port, uuid.c_str(), write_set_algorithm,
      gcs_member_id.get_member_id(), status, local_member_plugin_version,
      gtid_assignment_block_size, Group_member_info::MEMBER_ROLE_PRIMARY,
      in_primary_mode, has_enforces_update_everywhere_checks, member_weight,
      lower_case_table_names, default_table_encryption, PSI_NOT_INSTRUMENTED);
  new_member->update_gtid_sets(executed_gtid, purged_gtid, retrieved_gtid);

  cluster_member_mgr->add(new_member);

  string uuid_to_get("8d7r947c-dr4a-17i3-59d1-f01faf1kkc44");

  Group_member_info *retrieved_local_info =
      cluster_member_mgr->get_group_member_info(uuid_to_get);

  ASSERT_TRUE(retrieved_local_info != NULL);
  ASSERT_EQ(retrieved_local_info->get_uuid(), uuid_to_get);

  delete retrieved_local_info;
}

TEST_F(ClusterMemberInfoManagerTest, UpdateStatusOfLocalObjectTest) {
  Notification_context ctx;
  cluster_member_mgr->update_member_status(
      local_node->get_uuid(), Group_member_info::MEMBER_ONLINE, ctx);

  ASSERT_EQ(Group_member_info::MEMBER_ONLINE,
            local_node->get_recovery_status());
}

TEST_F(ClusterMemberInfoManagerTest, UpdateGtidSetsOfLocalObjectTest) {
  string executed_gtid("aaaa:1-10");
  string purged_gtid("pppp:1-7");
  string retrieved_gtid("bbbb:1-10");

  cluster_member_mgr->update_gtid_sets(local_node->get_uuid(), executed_gtid,
                                       purged_gtid, retrieved_gtid);

  ASSERT_EQ(executed_gtid, local_node->get_gtid_executed());
  ASSERT_EQ(purged_gtid, local_node->get_gtid_purged());
  ASSERT_EQ(retrieved_gtid, local_node->get_gtid_retrieved());
}

TEST_F(ClusterMemberInfoManagerTest, GetLocalInfoByUUIDAfterEncodingTest) {
  vector<uchar> *encoded = new vector<uchar>();
  cluster_member_mgr->encode(encoded);

  vector<Group_member_info *> *decoded_members =
      cluster_member_mgr->decode(&encoded->front(), encoded->size());

  cluster_member_mgr->update(decoded_members);

  delete decoded_members;
  delete encoded;

  string uuid_to_get("8d7r947c-dr4a-17i3-59d1-f01faf1kkc44");

  Group_member_info *retrieved_local_info =
      cluster_member_mgr->get_group_member_info(uuid_to_get);

  ASSERT_TRUE(retrieved_local_info != NULL);

  ASSERT_EQ(local_node->get_port(), retrieved_local_info->get_port());
  ASSERT_EQ(local_node->get_hostname(), retrieved_local_info->get_hostname());
  ASSERT_EQ(local_node->get_uuid(), retrieved_local_info->get_uuid());
  ASSERT_EQ(local_node->get_gcs_member_id().get_member_id(),
            retrieved_local_info->get_gcs_member_id().get_member_id());
  ASSERT_EQ(local_node->get_recovery_status(),
            retrieved_local_info->get_recovery_status());
  ASSERT_EQ(local_node->get_write_set_extraction_algorithm(),
            retrieved_local_info->get_write_set_extraction_algorithm());
  ASSERT_EQ(local_node->get_gtid_executed(),
            retrieved_local_info->get_gtid_executed());
  ASSERT_EQ(local_node->get_gtid_purged(),
            retrieved_local_info->get_gtid_purged());
  ASSERT_EQ(local_node->get_gtid_retrieved(),
            retrieved_local_info->get_gtid_retrieved());
  ASSERT_EQ(local_node->get_gtid_assignment_block_size(),
            retrieved_local_info->get_gtid_assignment_block_size());
  ASSERT_EQ(local_node->get_role(), retrieved_local_info->get_role());
  ASSERT_EQ(local_node->get_member_weight(),
            retrieved_local_info->get_member_weight());

  delete retrieved_local_info;
}

TEST_F(ClusterMemberInfoManagerTest,
       UpdateStatusOfLocalObjectAfterExchangeTest) {
  Notification_context ctx;
  vector<uchar> *encoded = new vector<uchar>();
  cluster_member_mgr->encode(encoded);

  vector<Group_member_info *> *decoded_members =
      cluster_member_mgr->decode(&encoded->front(), encoded->size());

  cluster_member_mgr->update(decoded_members);

  delete decoded_members;
  delete encoded;

  cluster_member_mgr->update_member_status(
      local_node->get_uuid(), Group_member_info::MEMBER_ONLINE, ctx);

  ASSERT_EQ(Group_member_info::MEMBER_ONLINE,
            local_node->get_recovery_status());

  string executed_gtid("cccc:1-11");
  string purged_gtid("pppp:1-11");
  string retrieved_gtid("dddd:1-11");

  cluster_member_mgr->update_gtid_sets(local_node->get_uuid(), executed_gtid,
                                       purged_gtid, retrieved_gtid);

  ASSERT_EQ(executed_gtid, local_node->get_gtid_executed());
  ASSERT_EQ(retrieved_gtid, local_node->get_gtid_retrieved());

  Group_member_info *retrieved_local_info =
      cluster_member_mgr->get_group_member_info(local_node->get_uuid());

  ASSERT_EQ(Group_member_info::MEMBER_ONLINE,
            retrieved_local_info->get_recovery_status());

  ASSERT_EQ(executed_gtid, retrieved_local_info->get_gtid_executed());
  ASSERT_EQ(retrieved_gtid, retrieved_local_info->get_gtid_retrieved());

  delete retrieved_local_info;
}

TEST_F(ClusterMemberInfoManagerTest, EncodeDecodeLargeSets) {
  // Add another member info in order to make this test more realistic
  string hostname("pc_hostname2");
  string uuid("781f947c-db4a-22e3-99d4-f01faf1a1c44");
  uint port = 4444;
  uint write_set_algorithm = 1;
  uint lower_case_table_names = 0;
  bool default_table_encryption = false;
  uint plugin_version = 0x000400;
  Gcs_member_identifier gcs_member_id("another_stuff");
  string executed_gtid("aaaa:1-11:12-14:16-20:22-30");
  string purged_gtid("pppp:1-11:12-14:17-20:26-39:50-78");
  // Add an huge gtid string (bigger then 16 bits )
  string retrieved_gtid(70000, 'a');
  ulonglong gtid_assignment_block_size = 9223372036854775807ULL;
  bool in_primary_mode = false;
  bool has_enforces_update_everywhere_checks = false;
  uint member_weight = 40;

  Group_member_info::Group_member_status status =
      Group_member_info::MEMBER_OFFLINE;

  Member_version local_member_plugin_version(plugin_version);
  Group_member_info *new_member = new Group_member_info(
      hostname.c_str(), port, uuid.c_str(), write_set_algorithm,
      gcs_member_id.get_member_id(), status, local_member_plugin_version,
      gtid_assignment_block_size, Group_member_info::MEMBER_ROLE_PRIMARY,
      in_primary_mode, has_enforces_update_everywhere_checks, member_weight,
      lower_case_table_names, default_table_encryption, PSI_NOT_INSTRUMENTED);
  new_member->update_gtid_sets(executed_gtid, purged_gtid, retrieved_gtid);

  cluster_member_mgr->add(new_member);

  string uuid_to_get("8d7r947c-dr4a-17i3-59d1-f01faf1kkc44");

  Group_member_info *retrieved_local_info =
      cluster_member_mgr->get_group_member_info(uuid_to_get);

  ASSERT_TRUE(retrieved_local_info != NULL);
  ASSERT_EQ(retrieved_local_info->get_uuid(), uuid_to_get);

  vector<uchar> *encoded = new vector<uchar>();
  cluster_member_mgr->encode(encoded);

  vector<Group_member_info *> *decoded_members =
      cluster_member_mgr->decode(&encoded->front(), encoded->size());
  delete encoded;

  cluster_member_mgr->update(decoded_members);

  delete decoded_members;

  ASSERT_EQ(2U, cluster_member_mgr->get_number_of_members());

  delete retrieved_local_info;
  retrieved_local_info = cluster_member_mgr->get_group_member_info(uuid);

  ASSERT_TRUE(retrieved_local_info != NULL);

  ASSERT_EQ(port, retrieved_local_info->get_port());
  ASSERT_EQ(hostname, retrieved_local_info->get_hostname());
  ASSERT_EQ(executed_gtid, retrieved_local_info->get_gtid_executed());
  ASSERT_EQ(retrieved_gtid, retrieved_local_info->get_gtid_retrieved());
  ASSERT_EQ(write_set_algorithm,
            retrieved_local_info->get_write_set_extraction_algorithm());

  delete retrieved_local_info;
  retrieved_local_info = cluster_member_mgr->get_group_member_info(uuid_to_get);

  ASSERT_TRUE(retrieved_local_info != NULL);

  ASSERT_EQ(local_node->get_port(), retrieved_local_info->get_port());
  ASSERT_EQ(local_node->get_hostname(), retrieved_local_info->get_hostname());
  ASSERT_EQ(local_node->get_uuid(), retrieved_local_info->get_uuid());
  ASSERT_EQ(local_node->get_gcs_member_id().get_member_id(),
            retrieved_local_info->get_gcs_member_id().get_member_id());
  ASSERT_EQ(local_node->get_recovery_status(),
            retrieved_local_info->get_recovery_status());
  ASSERT_EQ(local_node->get_write_set_extraction_algorithm(),
            retrieved_local_info->get_write_set_extraction_algorithm());
  ASSERT_EQ(local_node->get_gtid_executed(),
            retrieved_local_info->get_gtid_executed());
  ASSERT_EQ(local_node->get_gtid_purged(),
            retrieved_local_info->get_gtid_purged());
  ASSERT_EQ(local_node->get_gtid_retrieved(),
            retrieved_local_info->get_gtid_retrieved());
  ASSERT_EQ(local_node->get_gtid_assignment_block_size(),
            retrieved_local_info->get_gtid_assignment_block_size());
  ASSERT_EQ(local_node->get_role(), retrieved_local_info->get_role());
  ASSERT_EQ(local_node->get_member_weight(),
            retrieved_local_info->get_member_weight());
  ASSERT_EQ(local_node->get_lower_case_table_names(),
            retrieved_local_info->get_lower_case_table_names());
  ASSERT_EQ(local_node->get_default_table_encryption(),
            retrieved_local_info->get_default_table_encryption());

  delete retrieved_local_info;
}

}  // namespace gcs_member_info_unittest