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407 lines (381 loc) · 13.3 KB
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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.
*/
#define USING_LOG_PREFIX SQL_ENG
#include "sql/engine/ob_subschema_ctx.h"
#include "deps/oblib/src/lib/udt/ob_udt_type.h"
#include "src/share/rc/ob_tenant_base.h"
namespace oceanbase
{
using namespace common;
using namespace share;
using namespace transaction;
namespace sql
{
// implement of subschema mapping
// Add New de/serialize functions for schema value when new subschema types are added.
// Signature is identify of subschema value, using for reverse search of subschema id
// for sql udt, signature is original udt id
#define DEF_SUBSCHEMA_ENTRY(SUBSCHEMATYPE) \
{ \
subschema_value_serialize<SUBSCHEMATYPE>, \
subschema_value_deserialize<SUBSCHEMATYPE>, \
subschema_value_serialize_size<SUBSCHEMATYPE>, \
subschema_value_get_signature<SUBSCHEMATYPE>, \
subschema_value_deep_copy<SUBSCHEMATYPE>, \
}
template<>
int subschema_value_serialize<OB_SUBSCHEMA_UDT_TYPE>(void *value, char* buf, const int64_t buf_len, int64_t& pos)
{
int ret = OB_SUCCESS;
if (OB_ISNULL(value)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("null sql udt value for seriazlie", K(ret), K(OB_SUBSCHEMA_UDT_TYPE));
} else {
const ObSqlUDTMeta* udt_meta = reinterpret_cast<ObSqlUDTMeta *>(value);
if (OB_FAIL(udt_meta->serialize(buf, buf_len, pos))) {
LOG_WARN("failed to do sql udt meta seriazlie", K(ret), K(*udt_meta));
}
}
return ret;
}
template <>
int subschema_value_deserialize<OB_SUBSCHEMA_UDT_TYPE>(void *value, const char* buf, const int64_t data_len, int64_t& pos)
{
int ret = OB_SUCCESS;
if (OB_ISNULL(value)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("null sql udt value for deseriazlie", K(ret), K(OB_SUBSCHEMA_UDT_TYPE));
} else {
ObSqlUDTMeta* udt_meta = reinterpret_cast<ObSqlUDTMeta *>(value);
if (OB_FAIL(udt_meta->deserialize(buf, data_len, pos))) {
LOG_WARN("failed to do sql udt meta deseriazlie", K(ret), KP(buf), K(data_len));
}
}
return ret;
}
template <>
int64_t subschema_value_serialize_size<OB_SUBSCHEMA_UDT_TYPE>(void *value)
{
int ret = OB_SUCCESS;
int64_t len = 0;
if (OB_ISNULL(value)) {
} else {
ObSqlUDTMeta* udt_meta = reinterpret_cast<ObSqlUDTMeta *>(value);
len += udt_meta->get_serialize_size();
}
return len;
}
template <>
int subschema_value_get_signature<OB_SUBSCHEMA_UDT_TYPE>(void *value, uint64_t &signature)
{
int ret = OB_SUCCESS;
signature = 0;
if (OB_ISNULL(value)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("null subschema value", K(ret), K(OB_SUBSCHEMA_UDT_TYPE));
} else {
const ObSqlUDTMeta* udt_meta = reinterpret_cast<ObSqlUDTMeta *>(value);
signature = udt_meta->udt_id_;
}
return ret;
}
template <>
int subschema_value_deep_copy<OB_SUBSCHEMA_UDT_TYPE>(const void *src_value, void *&dst_value, ObIAllocator &allocator)
{
int ret = OB_SUCCESS;
if (OB_ISNULL(src_value)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("null subschema value for deep copy", K(ret), K(OB_SUBSCHEMA_UDT_TYPE));
} else {
const ObSqlUDTMeta* udt_meta = reinterpret_cast<const ObSqlUDTMeta *>(src_value);
ObSqlUDTMeta* copy_meta = NULL;
if (OB_FAIL(udt_meta->deep_copy(allocator, copy_meta))) {
LOG_WARN("failed to deep copy udt meta", K(ret), K(OB_SUBSCHEMA_UDT_TYPE));
} else if (OB_ISNULL(copy_meta)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("deep copy udt meta result is null", K(ret), K(OB_SUBSCHEMA_UDT_TYPE));
} else {
dst_value = static_cast<void *>(copy_meta);
}
}
return ret;
}
ObSubSchemaFuncs SUBSCHEMA_FUNCS[OB_SUBSCHEMA_MAX_TYPE] =
{
DEF_SUBSCHEMA_ENTRY(OB_SUBSCHEMA_UDT_TYPE),
};
int ObSubSchemaValue::deep_copy_value(const void *src_value, ObIAllocator &allocator)
{
int ret = OB_SUCCESS;
if (OB_ISNULL(src_value)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("null value for deep copy subschema value", K(ret));
} else if (OB_FAIL(SUBSCHEMA_FUNCS[type_].deep_copy(src_value, value_, allocator))) {
LOG_WARN("failed deep copy subschema value", K(ret), K(*this), KP(src_value));
}
return ret;
}
// Implementation of de/serialize of ObSubschemaValue
OB_DEF_SERIALIZE(ObSubSchemaValue)
{
int ret = OB_SUCCESS;
LST_DO_CODE(OB_UNIS_ENCODE,
type_,
signature_);
if (OB_FAIL(ret)) {
LOG_WARN("fail to serialize subschema type info", K(ret), K(type_), K(signature_));
} else if (OB_FAIL(SUBSCHEMA_FUNCS[type_].value_serialize(value_, buf, buf_len, pos))) {
LOG_WARN("fail to serialize subschema data", K(ret), K(type_), K(signature_));
}
return ret;
}
OB_DEF_DESERIALIZE(ObSubSchemaValue)
{
int ret = OB_SUCCESS;
LST_DO_CODE(OB_UNIS_DECODE,
type_,
signature_);
if (OB_FAIL(ret)) {
LOG_WARN("fail to deserialize subschema type info", K(ret), K(type_), K(signature_));
} else if (OB_FAIL(SUBSCHEMA_FUNCS[type_].value_deserialize(value_, buf, data_len, pos))) {
LOG_WARN("fail to deserialize subschema data", K(ret), K(type_), K(signature_));
}
return ret;
}
// serialize size cannot return error code
OB_DEF_SERIALIZE_SIZE(ObSubSchemaValue)
{
int64_t len = 0;
LST_DO_CODE(OB_UNIS_ADD_LEN,
type_,
signature_);
len += SUBSCHEMA_FUNCS[type_].get_value_serialize_size(value_);
return len;
}
// Implementation of de/serialize of ObSubschemaValue of ObSubSchemaCtx
OB_DEF_SERIALIZE(ObSubSchemaCtx)
{
int ret = OB_SUCCESS;
if (!is_inited_ || subschema_map_.empty()) { // do nothing
} else { // subschema count more then zero
uint32_t subschema_count = subschema_map_.size();
OB_UNIS_ENCODE(subschema_count);
OB_UNIS_ENCODE(used_subschema_id_);
if (OB_FAIL(ret)) {
LOG_WARN("fail to serialize subschema ctx", K(ret));
} else {
ObSubSchemaMap::const_iterator iter = subschema_map_.begin();
while (OB_SUCC(ret) && iter != subschema_map_.end()) {
OB_UNIS_ENCODE(iter->first);
OB_UNIS_ENCODE(iter->second);
iter++;
}
}
}
return ret;
}
OB_DEF_DESERIALIZE(ObSubSchemaCtx)
{
int ret = OB_SUCCESS;
uint32_t subschema_count = 0;
OB_UNIS_DECODE(subschema_count);
if (OB_FAIL(ret)) {
} else if (subschema_count > 0) {
if (!is_inited_ && OB_FAIL(init())) {
LOG_WARN("fail to init subschema ctx", K(ret));
} else {
OB_UNIS_DECODE(used_subschema_id_);
if (OB_FAIL(ret)) {
LOG_WARN("fail to deserialize subschema ctx", K(ret));
} else {
for (int64_t i = 0; OB_SUCC(ret) && i < subschema_count; i++) {
uint64_t subschema_id = 0;
ObSubSchemaValue value;
ObSqlUDTMeta udt_meta;
value.value_ = &udt_meta;
OB_UNIS_DECODE(subschema_id);
OB_UNIS_DECODE(value);
if (OB_FAIL(ret)) { // copy value from buffer to local memory
} else if (OB_FAIL(value.deep_copy_value(value.value_, allocator_))) {
LOG_WARN("deep copy value failed", K(ret), K(subschema_id), K(value));
} else if (OB_FAIL(set_subschema(subschema_id, value))) {
LOG_WARN("fail to set subschema", K(ret), K(subschema_id), K(value));
}
}
}
}
}
return ret;
}
// serialize size cannot return error code
OB_DEF_SERIALIZE_SIZE(ObSubSchemaCtx)
{
int64_t len = 0;
if (!is_inited_ || subschema_map_.empty()) { // do nothing
} else { // subschema count more then zero
uint32_t subschema_count = subschema_map_.size();
OB_UNIS_ADD_LEN(subschema_count);
OB_UNIS_ADD_LEN(used_subschema_id_);
ObSubSchemaMap::const_iterator iter = subschema_map_.begin();
while (iter != subschema_map_.end()) {
OB_UNIS_ADD_LEN(iter->first);
OB_UNIS_ADD_LEN(iter->second);
iter++;
}
}
return len;
}
int ObSubSchemaCtx::assgin(const ObSubSchemaCtx &other)
{
int ret = OB_SUCCESS;
if (!other.is_inited() || other.get_subschema_count() == 0) {
// no subschema, do nothing
} else if (is_inited() && get_subschema_count() > 0) {
reset();
LOG_INFO("subschema context reset due to assgin other", K(*this), K(lbt()));
}
if (!is_inited() && OB_FAIL(init())) {
LOG_WARN("fail to init subschema ctx", K(ret));
} else {
ObSubSchemaMap::const_iterator iter = other.get_subschema_map().begin();
while (OB_SUCC(ret) && iter != other.get_subschema_map().end()) {
uint64_t subschema_id = iter->first;
ObSubSchemaValue value = iter->second;
if (OB_FAIL(value.deep_copy_value(iter->second.value_, allocator_))) {
LOG_WARN("deep copy value failed", K(ret), K(subschema_id), K(value));
} else if (OB_FAIL(set_subschema(subschema_id, value))) {
LOG_WARN("fail to set subschema", K(ret), K(subschema_id), K(value));
}
iter++;
}
used_subschema_id_ = other.used_subschema_id_;
}
return ret;
}
int ObSubSchemaCtx::init()
{
int ret = OB_SUCCESS;
if (is_inited_) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("sub schema ctx already inited", K(ret), K(*this));
} else if (OB_FAIL(subschema_map_.create(SUBSCHEMA_BUCKET_NUM,
"SubSchemaHash",
"SubSchemaHash",
MTL_ID()))) {
LOG_WARN("fail to create subschema map", K(ret));
} else if (OB_FAIL(subschema_reverse_map_.create(SUBSCHEMA_BUCKET_NUM,
"SubSchemaRev",
"SubSchemaRev",
MTL_ID()))) {
LOG_WARN("fail to create subschema map", K(ret));
} else {
is_inited_ = true;
used_subschema_id_ = MAX_NON_RESERVED_SUBSCHEMA_ID;
}
return ret;
}
void ObSubSchemaCtx::reset() {
// content in subschema value is alloc from plan object allocator? need a new allocator?
if (is_inited_) {
subschema_map_.destroy();
subschema_reverse_map_.destroy();
is_inited_ = false;
used_subschema_id_ = MAX_NON_RESERVED_SUBSCHEMA_ID;
reserved_ = 0;
fields_ = NULL;
LOG_INFO("subschema ctx reset", KP(this), KP(this), K(lbt()));
}
}
uint32_t ObSubSchemaCtx::get_subschema_count() const
{
uint32_t subschema_count = 0;
if (!is_inited_) {
} else {
subschema_count = subschema_map_.size();
}
return subschema_count;
}
int ObSubSchemaCtx::get_new_subschema_id(uint16_t &subschema_id)
{
int ret = OB_SUCCESS;
subschema_id = used_subschema_id_++;
if (used_subschema_id_ == UINT16_MAX) {
ret = OB_ERR_UNEXPECTED;
SQL_ENG_LOG(WARN, "more then 64K different subschema", K(ret), K(subschema_id), K(lbt()));
} else {
SQL_ENG_LOG(INFO, "new subschema id", KP(this), K(subschema_id), K(lbt()));
}
return ret;
}
int ObSubSchemaCtx::get_subschema_id_from_fields(uint64_t udt_id, uint16_t &subschema_id)
{
int ret = OB_SUCCESS;
subschema_id = ObInvalidSqlType;
bool is_found = false;
if (OB_NOT_NULL(fields_)) {
for (uint32_t i = 0; is_found == false && OB_SUCC(ret) && i < fields_->count(); i++) {
if ((fields_->at(i).type_.is_user_defined_sql_type()
// || fields_->at(i).type_.is_collection_sql_type()
)
&& fields_->at(i).accuracy_.get_accuracy() == udt_id) {
subschema_id = fields_->at(i).type_.get_udt_subschema_id();
is_found = true;
}
}
}
return ret;
}
int ObSubSchemaCtx::set_subschema(uint16_t subschema_id, ObSubSchemaValue &value)
{
int ret = OB_SUCCESS;
uint64_t key = subschema_id;
ObSubSchemaValue tmp_value;
if (OB_FAIL(subschema_map_.get_refactored(key, tmp_value))) {
if (OB_HASH_NOT_EXIST != ret) {
LOG_WARN("failed to get subschema", K(ret), K(key), K(tmp_value), K(value));
} else { // not exist
ret = OB_SUCCESS;
ObSubSchemaReverseKey rev_key(value.type_, value.signature_);
LOG_INFO("add new subschema", K(ret), K(subschema_id), K(value));
if (OB_FAIL(subschema_map_.set_refactored(key, value))) {
LOG_WARN("set subschema map failed", K(ret), K(subschema_id));
} else if (OB_FAIL(subschema_reverse_map_.set_refactored(rev_key, key))) {
LOG_WARN("set subschema map failed", K(ret), K(rev_key));
int tmp_ret = subschema_map_.erase_refactored(subschema_id);
if (tmp_ret != OB_SUCCESS) {
LOG_WARN("erase subschema map failed", K(ret), K(tmp_ret), K(subschema_id));
}
}
}
} else {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("subschema id already exist", KP(this), K(ret), K(subschema_id), K(value));
}
return ret;
}
int ObSubSchemaCtx::get_subschema(uint16_t subschema_id, ObSubSchemaValue &value) const
{
uint64_t key = subschema_id;
return subschema_map_.get_refactored(key, value);
}
int ObSubSchemaCtx::get_subschema_id(uint64_t value_signature,
ObSubSchemaType type,
uint16_t &subschema_id) const
{
ObSubSchemaReverseKey rev_key(type, value_signature);
uint64_t value = ObMaxSystemUDTSqlType; // init invalid subschema value
int ret = subschema_reverse_map_.get_refactored(rev_key, value);
subschema_id = value;
return ret;
}
} //sql
} //oceanbase