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src/share/ob_cascad_member_list.cpp

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+/**
+ * Copyright (c) 2021 OceanBase
+ * OceanBase CE is licensed under Mulan PubL v2.
+ * You can use this software according to the terms and conditions of the Mulan PubL v2.
+ * You may obtain a copy of Mulan PubL v2 at:
+ *          http://license.coscl.org.cn/MulanPubL-2.0
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+ * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+ * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+ * See the Mulan PubL v2 for more details.
+ */
+
+#include "lib/ob_define.h"
+#include "lib/utility/ob_print_utils.h"
+#include "ob_cascad_member_list.h"
+
+namespace oceanbase {
+using namespace common;
+
+namespace share {
+ObCascadMemberList::ObCascadMemberList() : member_array_()
+{}
+
+ObCascadMemberList::~ObCascadMemberList()
+{}
+
+void ObCascadMemberList::reset()
+{
+  member_array_.reset();
+}
+
+bool ObCascadMemberList::is_valid() const
+{
+  return member_array_.count() > 0;
+}
+
+int ObCascadMemberList::add_member(const ObCascadMember& member)
+{
+  int ret = OB_SUCCESS;
+
+  if (OB_UNLIKELY(!member.is_valid())) {
+    ret = OB_INVALID_ARGUMENT;
+  } else if (member_array_.count() >= OB_MAX_CHILD_MEMBER_NUMBER) {
+    ret = OB_SIZE_OVERFLOW;
+  }
+
+  if (OB_SUCC(ret)) {
+    if (contains(member.get_server())) {
+      ret = OB_ENTRY_EXIST;
+    } else if (OB_FAIL(member_array_.push_back(member))) {
+      COMMON_LOG(ERROR, "member_array_ push_back failed", K(ret), K(member));
+    }
+  }
+
+  return ret;
+}
+
+int ObCascadMemberList::remove_member(const ObCascadMember& member)
+{
+  int ret = OB_SUCCESS;
+  int64_t index = OB_INVALID_INDEX;
+  if (OB_UNLIKELY(!member.is_valid())) {
+    ret = OB_INVALID_ARGUMENT;
+  } else if (member_array_.count() <= 0) {
+    ret = OB_ENTRY_NOT_EXIST;
+  }
+  if (OB_SUCC(ret)) {
+    for (int64_t i = 0; OB_SUCC(ret) && index == OB_INVALID_INDEX && i < member_array_.count(); ++i) {
+      if (member_array_[i] == member) {
+        index = i;
+      } else if (member_array_[i].get_server() == member.get_server()) {
+        ret = OB_ITEM_NOT_MATCH;
+        COMMON_LOG(WARN,
+            "ObCascadMemberList::remove_member member not match",
+            K(ret),
+            "Member in list",
+            member_array_[i],
+            "Argument member",
+            member);
+      }
+    }
+    if (OB_SUCCESS == ret && index == OB_INVALID_INDEX) {
+      ret = OB_ENTRY_NOT_EXIST;
+    }
+  }
+  if (OB_SUCC(ret)) {
+    if (OB_FAIL(member_array_.remove(index))) {
+      COMMON_LOG(ERROR, "member_array_ remove failed", K(ret));
+    }
+  }
+  return ret;
+}
+
+int ObCascadMemberList::remove_server(const ObAddr& server)
+{
+  int ret = OB_SUCCESS;
+  int64_t index = OB_INVALID_INDEX;
+  if (OB_UNLIKELY(!server.is_valid())) {
+    ret = OB_INVALID_ARGUMENT;
+  } else if (member_array_.count() <= 0) {
+    ret = OB_ENTRY_NOT_EXIST;
+  }
+  if (OB_SUCC(ret)) {
+    for (int64_t i = 0; index == OB_INVALID_INDEX && i < member_array_.count(); ++i) {
+      if (member_array_[i].get_server() == server) {
+        index = i;
+      }
+    }
+    if (index == OB_INVALID_INDEX) {
+      ret = OB_ENTRY_NOT_EXIST;
+    }
+  }
+  if (OB_SUCC(ret)) {
+    if (OB_FAIL(member_array_.remove(index))) {
+      COMMON_LOG(ERROR, "member_array_ remove failed", K(ret));
+    }
+  }
+  return ret;
+}
+
+int64_t ObCascadMemberList::get_member_number() const
+{
+  return member_array_.count();
+}
+
+int ObCascadMemberList::get_server_by_index(const int64_t index, common::ObAddr& server) const
+{
+  int ret = OB_SUCCESS;
+  if (index < 0 || index >= member_array_.count()) {
+    ret = OB_SIZE_OVERFLOW;
+  }
+  if (OB_SUCC(ret)) {
+    server = member_array_[index].get_server();
+  }
+  return ret;
+}
+
+int ObCascadMemberList::get_member_by_index(const int64_t index, ObCascadMember& member) const
+{
+  int ret = OB_SUCCESS;
+  if (index < 0 || index >= member_array_.count()) {
+    ret = OB_SIZE_OVERFLOW;
+  }
+  if (OB_SUCC(ret)) {
+    member = member_array_[index];
+  }
+  return ret;
+}
+
+int ObCascadMemberList::get_member_by_addr(const common::ObAddr& server, ObCascadMember& member) const
+{
+  int ret = OB_SUCCESS;
+  int64_t i = 0;
+  member.reset();
+  if (!server.is_valid()) {
+    ret = OB_INVALID_ARGUMENT;
+  } else {
+    for (i = 0; i < member_array_.count(); ++i) {
+      if (member_array_[i].get_server() == server) {
+        member = member_array_[i];
+        break;
+      }
+    }
+    if (member_array_.count() == i) {
+      ret = OB_ENTRY_NOT_EXIST;
+    }
+  }
+  return ret;
+}
+
+bool ObCascadMemberList::contains(const common::ObAddr& server) const
+{
+  int bool_ret = false;
+  for (int64_t i = 0; i < member_array_.count(); ++i) {
+    if (member_array_[i].get_server() == server) {
+      bool_ret = true;
+      break;
+    }
+  }
+  return bool_ret;
+}
+
+bool ObCascadMemberList::contains(const ObCascadMember& member) const
+{
+  int bool_ret = false;
+  for (int64_t i = 0; i < member_array_.count(); ++i) {
+    if (member_array_[i] == member) {
+      bool_ret = true;
+      break;
+    }
+  }
+  return bool_ret;
+}
+
+int ObCascadMemberList::deep_copy(const common::ObMemberList& member_list, const int64_t dst_cluster_id)
+{
+  int ret = OB_SUCCESS;
+  reset();
+  const int64_t member_number = member_list.get_member_number();
+  for (int64_t i = 0; OB_SUCC(ret) && i < member_number; ++i) {
+    common::ObAddr cur_server;
+    if (OB_FAIL(member_list.get_server_by_index(i, cur_server))) {
+      COMMON_LOG(WARN, "get_server_by_index failed", K(ret), K(i), K(member_list));
+    } else if (OB_FAIL(add_member(ObCascadMember(cur_server, dst_cluster_id)))) {
+      COMMON_LOG(WARN, "add_member failed", K(ret), K(i), K(cur_server));
+    } else {
+      // do nothing
+    }
+  }
+  return ret;
+}
+
+int ObCascadMemberList::deep_copy(const ObCascadMemberList& member_list)
+{
+  int ret = OB_SUCCESS;
+  reset();
+  for (int64_t i = 0; OB_SUCC(ret) && i < member_list.get_member_number(); ++i) {
+    ObCascadMember member;
+    if (OB_FAIL(member_list.get_member_by_index(i, member))) {
+      COMMON_LOG(WARN, "get_member_by_index failed", K(ret), K(i));
+    } else if (OB_FAIL(add_member(member))) {
+      COMMON_LOG(WARN, "add_member failed", K(ret));
+    }
+  }
+  return ret;
+}
+
+ObCascadMemberList& ObCascadMemberList::operator=(const ObCascadMemberList& member_list)
+{
+  if (this != &member_list) {
+    int tmp_ret = OB_SUCCESS;
+    if (OB_SUCCESS != (tmp_ret = deep_copy(member_list))) {
+      COMMON_LOG(ERROR, "deep_copy failed", K(tmp_ret));
+    }
+  }
+  return *this;
+}
+
+bool ObCascadMemberList::member_addr_equal(const ObCascadMemberList& member_list) const
+{
+  bool bool_ret = true;
+  if (get_member_number() != member_list.get_member_number()) {
+    bool_ret = false;
+  } else {
+    common::ObAddr addr;
+    for (int64_t i = 0; true == bool_ret && i < get_member_number(); ++i) {
+      if (!member_list.contains(member_array_[i].get_server())) {
+        bool_ret = false;
+      } else {
+      }
+    }
+  }
+  return bool_ret;
+}
+
+OB_DEF_SERIALIZE(ObCascadMemberList)
+{
+  int ret = OB_SUCCESS;
+  int64_t new_pos = pos;
+  if (NULL == buf || pos < 0 || pos > buf_len) {
+    ret = OB_INVALID_ARGUMENT;
+  } else if (OB_SUCCESS != (ret = serialization::encode_i64(buf, buf_len, new_pos, get_member_number()))) {
+    COMMON_LOG(WARN, "encode member_number failed", K(ret), "member_number", get_member_number());
+  } else {
+    for (int64_t i = 0; OB_SUCC(ret) && i < get_member_number(); ++i) {
+      if (OB_FAIL(member_array_[i].serialize(buf, buf_len, new_pos))) {
+        COMMON_LOG(WARN, "member serialize failed", K(ret), K(i), "member", member_array_[i]);
+      }
+    }
+  }
+  if (OB_SUCC(ret)) {
+    pos = new_pos;
+  }
+  return ret;
+}
+
+OB_DEF_DESERIALIZE(ObCascadMemberList)
+{
+  int ret = OB_SUCCESS;
+  int64_t new_pos = pos;
+  int64_t member_number = 0;
+  if (NULL == buf || pos < 0 || pos > data_len) {
+    ret = OB_INVALID_ARGUMENT;
+  } else if (OB_SUCCESS != (ret = serialization::decode_i64(buf, data_len, new_pos, &member_number))) {
+    COMMON_LOG(WARN, "decode member_number failed", K(ret), K(member_number));
+  } else {
+    for (int64_t i = 0; OB_SUCC(ret) && i < member_number; ++i) {
+      ObCascadMember member;
+      if (OB_FAIL(member.deserialize(buf, data_len, new_pos))) {
+        COMMON_LOG(WARN, "decode member failed", K(ret), K(member_number));
+      } else if (OB_FAIL(add_member(member))) {
+        COMMON_LOG(WARN, "add_member failed", K(ret));
+      }
+    }
+  }
+  if (OB_SUCC(ret)) {
+    pos = new_pos;
+  }
+  return ret;
+}
+
+OB_DEF_SERIALIZE_SIZE(ObCascadMemberList)
+{
+  int64_t serialize_size = serialization::encoded_length_i64(get_member_number());
+  for (int64_t i = 0; i < get_member_number(); ++i) {
+    serialize_size += member_array_[i].get_serialize_size();
+  }
+  return serialize_size;
+}
+
+}  // namespace share
+}  // namespace oceanbase