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milvus/core/src/db/meta/MySQLMetaImpl.cpp
groot 9bb2f4b728 typo 
Signed-off-by: groot <yihua.mo@zilliz.com>
2020-03-09 21:14:14 +08:00

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// Copyright (C) 2019-2020 Zilliz. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software distributed under the License
// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
// or implied. See the License for the specific language governing permissions and limitations under the License.
#include "db/meta/MySQLMetaImpl.h"
#include <fiu-local.h>
#include <mysql++/mysql++.h>
#include <string.h>
#include <unistd.h>
#include <boost/filesystem.hpp>
#include <chrono>
#include <fstream>
#include <iostream>
#include <map>
#include <mutex>
#include <regex>
#include <set>
#include <sstream>
#include <string>
#include <thread>
#include <utility>
#include "MetaConsts.h"
#include "db/IDGenerator.h"
#include "db/OngoingFileChecker.h"
#include "db/Utils.h"
#include "metrics/Metrics.h"
#include "utils/CommonUtil.h"
#include "utils/Exception.h"
#include "utils/Log.h"
#include "utils/StringHelpFunctions.h"
#include "utils/ValidationUtil.h"
namespace milvus {
namespace engine {
namespace meta {
namespace {
Status
HandleException(const std::string& desc, const char* what = nullptr) {
if (what == nullptr) {
ENGINE_LOG_ERROR << desc;
return Status(DB_META_TRANSACTION_FAILED, desc);
}
std::string msg = desc + ":" + what;
ENGINE_LOG_ERROR << msg;
return Status(DB_META_TRANSACTION_FAILED, msg);
}
class MetaField {
public:
MetaField(const std::string& name, const std::string& type, const std::string& setting)
: name_(name), type_(type), setting_(setting) {
}
std::string
name() const {
return name_;
}
std::string
ToString() const {
return name_ + " " + type_ + " " + setting_;
}
// mysql field type has additional information. for instance, a filed type is defined as 'BIGINT'
// we get the type from sql is 'bigint(20)', so we need to ignore the '(20)'
bool
IsEqual(const MetaField& field) const {
size_t name_len_min = field.name_.length() > name_.length() ? name_.length() : field.name_.length();
size_t type_len_min = field.type_.length() > type_.length() ? type_.length() : field.type_.length();
return strncasecmp(field.name_.c_str(), name_.c_str(), name_len_min) == 0 &&
strncasecmp(field.type_.c_str(), type_.c_str(), type_len_min) == 0;
}
private:
std::string name_;
std::string type_;
std::string setting_;
};
using MetaFields = std::vector<MetaField>;
class MetaSchema {
public:
MetaSchema(const std::string& name, const MetaFields& fields) : name_(name), fields_(fields) {
}
std::string
name() const {
return name_;
}
std::string
ToString() const {
std::string result;
for (auto& field : fields_) {
if (!result.empty()) {
result += ",";
}
result += field.ToString();
}
return result;
}
// if the outer fields contains all this MetaSchema fields, return true
// otherwise return false
bool
IsEqual(const MetaFields& fields) const {
std::vector<std::string> found_field;
for (const auto& this_field : fields_) {
for (const auto& outer_field : fields) {
if (this_field.IsEqual(outer_field)) {
found_field.push_back(this_field.name());
break;
}
}
}
return found_field.size() == fields_.size();
}
private:
std::string name_;
MetaFields fields_;
};
// Tables schema
static const MetaSchema TABLES_SCHEMA(META_TABLES, {
MetaField("id", "BIGINT", "PRIMARY KEY AUTO_INCREMENT"),
MetaField("table_id", "VARCHAR(255)", "UNIQUE NOT NULL"),
MetaField("state", "INT", "NOT NULL"),
MetaField("dimension", "SMALLINT", "NOT NULL"),
MetaField("created_on", "BIGINT", "NOT NULL"),
MetaField("flag", "BIGINT", "DEFAULT 0 NOT NULL"),
MetaField("index_file_size", "BIGINT", "DEFAULT 1024 NOT NULL"),
MetaField("engine_type", "INT", "DEFAULT 1 NOT NULL"),
MetaField("index_params", "VARCHAR(512)", "NOT NULL"),
MetaField("metric_type", "INT", "DEFAULT 1 NOT NULL"),
MetaField("owner_table", "VARCHAR(255)", "NOT NULL"),
MetaField("partition_tag", "VARCHAR(255)", "NOT NULL"),
MetaField("version", "VARCHAR(64)",
std::string("DEFAULT '") + CURRENT_VERSION + "'"),
MetaField("flush_lsn", "BIGINT", "DEFAULT 0 NOT NULL"),
});
// TableFiles schema
static const MetaSchema TABLEFILES_SCHEMA(META_TABLEFILES, {
MetaField("id", "BIGINT", "PRIMARY KEY AUTO_INCREMENT"),
MetaField("table_id", "VARCHAR(255)", "NOT NULL"),
MetaField("segment_id", "VARCHAR(255)", "NOT NULL"),
MetaField("engine_type", "INT", "DEFAULT 1 NOT NULL"),
MetaField("file_id", "VARCHAR(255)", "NOT NULL"),
MetaField("file_type", "INT", "DEFAULT 0 NOT NULL"),
MetaField("file_size", "BIGINT", "DEFAULT 0 NOT NULL"),
MetaField("row_count", "BIGINT", "DEFAULT 0 NOT NULL"),
MetaField("updated_time", "BIGINT", "NOT NULL"),
MetaField("created_on", "BIGINT", "NOT NULL"),
MetaField("date", "INT", "DEFAULT -1 NOT NULL"),
MetaField("flush_lsn", "BIGINT", "DEFAULT 0 NOT NULL"),
});
} // namespace
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
MySQLMetaImpl::MySQLMetaImpl(const DBMetaOptions& options, const int& mode) : options_(options), mode_(mode) {
Initialize();
}
MySQLMetaImpl::~MySQLMetaImpl() {
}
Status
MySQLMetaImpl::NextTableId(std::string& table_id) {
std::lock_guard<std::mutex> lock(genid_mutex_); // avoid duplicated id
std::stringstream ss;
SafeIDGenerator& id_generator = SafeIDGenerator::GetInstance();
ss << id_generator.GetNextIDNumber();
table_id = ss.str();
return Status::OK();
}
Status
MySQLMetaImpl::NextFileId(std::string& file_id) {
std::lock_guard<std::mutex> lock(genid_mutex_); // avoid duplicated id
std::stringstream ss;
SafeIDGenerator& id_generator = SafeIDGenerator::GetInstance();
ss << id_generator.GetNextIDNumber();
file_id = ss.str();
return Status::OK();
}
void
MySQLMetaImpl::ValidateMetaSchema() {
if (nullptr == mysql_connection_pool_) {
return;
}
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
if (connectionPtr == nullptr) {
return;
}
auto validate_func = [&](const MetaSchema& schema) {
fiu_return_on("MySQLMetaImpl.ValidateMetaSchema.fail_validate", false);
mysqlpp::Query query_statement = connectionPtr->query();
query_statement << "DESC " << schema.name() << ";";
MetaFields exist_fields;
try {
mysqlpp::StoreQueryResult res = query_statement.store();
for (size_t i = 0; i < res.num_rows(); ++i) {
const mysqlpp::Row& row = res[i];
std::string name, type;
row["Field"].to_string(name);
row["Type"].to_string(type);
exist_fields.push_back(MetaField(name, type, ""));
}
} catch (std::exception& e) {
ENGINE_LOG_DEBUG << "Meta table '" << schema.name() << "' not exist and will be created";
}
if (exist_fields.empty()) {
return true;
}
return schema.IsEqual(exist_fields);
};
// verify Tables
if (!validate_func(TABLES_SCHEMA)) {
throw Exception(DB_INCOMPATIB_META, "Meta Tables schema is created by Milvus old version");
}
// verufy TableFiles
if (!validate_func(TABLEFILES_SCHEMA)) {
throw Exception(DB_INCOMPATIB_META, "Meta TableFiles schema is created by Milvus old version");
}
}
Status
MySQLMetaImpl::Initialize() {
// step 1: create db root path
if (!boost::filesystem::is_directory(options_.path_)) {
auto ret = boost::filesystem::create_directory(options_.path_);
fiu_do_on("MySQLMetaImpl.Initialize.fail_create_directory", ret = false);
if (!ret) {
std::string msg = "Failed to create db directory " + options_.path_;
ENGINE_LOG_ERROR << msg;
throw Exception(DB_META_TRANSACTION_FAILED, msg);
}
}
std::string uri = options_.backend_uri_;
// step 2: parse and check meta uri
utils::MetaUriInfo uri_info;
auto status = utils::ParseMetaUri(uri, uri_info);
if (!status.ok()) {
std::string msg = "Wrong URI format: " + uri;
ENGINE_LOG_ERROR << msg;
throw Exception(DB_INVALID_META_URI, msg);
}
if (strcasecmp(uri_info.dialect_.c_str(), "mysql") != 0) {
std::string msg = "URI's dialect is not MySQL";
ENGINE_LOG_ERROR << msg;
throw Exception(DB_INVALID_META_URI, msg);
}
// step 3: connect mysql
int thread_hint = std::thread::hardware_concurrency();
int max_pool_size = (thread_hint == 0) ? 8 : thread_hint;
unsigned int port = 0;
if (!uri_info.port_.empty()) {
port = std::stoi(uri_info.port_);
}
mysql_connection_pool_ = std::make_shared<MySQLConnectionPool>(
uri_info.db_name_, uri_info.username_, uri_info.password_, uri_info.host_, port, max_pool_size);
ENGINE_LOG_DEBUG << "MySQL connection pool: maximum pool size = " << std::to_string(max_pool_size);
// step 4: validate to avoid open old version schema
ValidateMetaSchema();
// step 5: clean shadow files
if (mode_ != DBOptions::MODE::CLUSTER_READONLY) {
CleanUpShadowFiles();
}
// step 6: try connect mysql server
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
if (connectionPtr == nullptr) {
std::string msg = "Failed to connect MySQL meta server: " + uri;
ENGINE_LOG_ERROR << msg;
throw Exception(DB_INVALID_META_URI, msg);
}
bool is_thread_aware = connectionPtr->thread_aware();
fiu_do_on("MySQLMetaImpl.Initialize.is_thread_aware", is_thread_aware = false);
if (!is_thread_aware) {
std::string msg =
"Failed to initialize MySQL meta backend: MySQL client component wasn't built with thread awareness";
ENGINE_LOG_ERROR << msg;
throw Exception(DB_INVALID_META_URI, msg);
}
// step 7: create meta table Tables
mysqlpp::Query InitializeQuery = connectionPtr->query();
InitializeQuery << "CREATE TABLE IF NOT EXISTS " << TABLES_SCHEMA.name() << " (" << TABLES_SCHEMA.ToString() + ");";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::Initialize: " << InitializeQuery.str();
bool initialize_query_exec = InitializeQuery.exec();
fiu_do_on("MySQLMetaImpl.Initialize.fail_create_table_scheme", initialize_query_exec = false);
if (!initialize_query_exec) {
std::string msg = "Failed to create meta table 'Tables' in MySQL";
ENGINE_LOG_ERROR << msg;
throw Exception(DB_META_TRANSACTION_FAILED, msg);
}
// step 8: create meta table TableFiles
InitializeQuery << "CREATE TABLE IF NOT EXISTS " << TABLEFILES_SCHEMA.name() << " ("
<< TABLEFILES_SCHEMA.ToString() + ");";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::Initialize: " << InitializeQuery.str();
initialize_query_exec = InitializeQuery.exec();
fiu_do_on("MySQLMetaImpl.Initialize.fail_create_table_files", initialize_query_exec = false);
if (!initialize_query_exec) {
std::string msg = "Failed to create meta table 'TableFiles' in MySQL";
ENGINE_LOG_ERROR << msg;
throw Exception(DB_META_TRANSACTION_FAILED, msg);
}
return Status::OK();
}
Status
MySQLMetaImpl::CreateTable(TableSchema& table_schema) {
try {
server::MetricCollector metric;
{
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
bool is_null_connection = (connectionPtr == nullptr);
fiu_do_on("MySQLMetaImpl.CreateTable.null_connection", is_null_connection = true);
fiu_do_on("MySQLMetaImpl.CreateTable.throw_exception", throw std::exception(););
if (is_null_connection) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
mysqlpp::Query createTableQuery = connectionPtr->query();
if (table_schema.table_id_.empty()) {
NextTableId(table_schema.table_id_);
} else {
createTableQuery << "SELECT state FROM " << META_TABLES << " WHERE table_id = " << mysqlpp::quote
<< table_schema.table_id_ << ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::CreateTable: " << createTableQuery.str();
mysqlpp::StoreQueryResult res = createTableQuery.store();
if (res.num_rows() == 1) {
int state = res[0]["state"];
fiu_do_on("MySQLMetaImpl.CreateTableTable.schema_TO_DELETE", state = TableSchema::TO_DELETE);
if (TableSchema::TO_DELETE == state) {
return Status(DB_ERROR, "Table already exists and it is in delete state, please wait a second");
} else {
return Status(DB_ALREADY_EXIST, "Table already exists");
}
}
}
table_schema.id_ = -1;
table_schema.created_on_ = utils::GetMicroSecTimeStamp();
std::string id = "NULL"; // auto-increment
std::string& table_id = table_schema.table_id_;
std::string state = std::to_string(table_schema.state_);
std::string dimension = std::to_string(table_schema.dimension_);
std::string created_on = std::to_string(table_schema.created_on_);
std::string flag = std::to_string(table_schema.flag_);
std::string index_file_size = std::to_string(table_schema.index_file_size_);
std::string engine_type = std::to_string(table_schema.engine_type_);
std::string& index_params = table_schema.index_params_;
std::string metric_type = std::to_string(table_schema.metric_type_);
std::string& owner_table = table_schema.owner_table_;
std::string& partition_tag = table_schema.partition_tag_;
std::string& version = table_schema.version_;
std::string flush_lsn = std::to_string(table_schema.flush_lsn_);
createTableQuery << "INSERT INTO " << META_TABLES << " VALUES(" << id << ", " << mysqlpp::quote << table_id
<< ", " << state << ", " << dimension << ", " << created_on << ", " << flag << ", "
<< index_file_size << ", " << engine_type << ", " << mysqlpp::quote << index_params << ", "
<< metric_type << ", " << mysqlpp::quote << owner_table << ", " << mysqlpp::quote
<< partition_tag << ", " << mysqlpp::quote << version << ", " << flush_lsn << ");";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::CreateTable: " << createTableQuery.str();
if (mysqlpp::SimpleResult res = createTableQuery.execute()) {
table_schema.id_ = res.insert_id(); // Might need to use SELECT LAST_INSERT_ID()?
// Consume all results to avoid "Commands out of sync" error
} else {
return HandleException("Add Table Error", createTableQuery.error());
}
} // Scoped Connection
ENGINE_LOG_DEBUG << "Successfully create table: " << table_schema.table_id_;
return utils::CreateTablePath(options_, table_schema.table_id_);
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN CREATING TABLE", e.what());
}
}
Status
MySQLMetaImpl::DescribeTable(TableSchema& table_schema) {
try {
server::MetricCollector metric;
mysqlpp::StoreQueryResult res;
{
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
bool is_null_connection = (connectionPtr == nullptr);
fiu_do_on("MySQLMetaImpl.DescribeTable.null_connection", is_null_connection = true);
fiu_do_on("MySQLMetaImpl.DescribeTable.throw_exception", throw std::exception(););
if (is_null_connection) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
mysqlpp::Query describeTableQuery = connectionPtr->query();
describeTableQuery
<< "SELECT id, state, dimension, created_on, flag, index_file_size, engine_type, index_params"
<< " , metric_type ,owner_table, partition_tag, version, flush_lsn"
<< " FROM " << META_TABLES << " WHERE table_id = " << mysqlpp::quote << table_schema.table_id_
<< " AND state <> " << std::to_string(TableSchema::TO_DELETE) << ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::DescribeTable: " << describeTableQuery.str();
res = describeTableQuery.store();
} // Scoped Connection
if (res.num_rows() == 1) {
const mysqlpp::Row& resRow = res[0];
table_schema.id_ = resRow["id"]; // implicit conversion
table_schema.state_ = resRow["state"];
table_schema.dimension_ = resRow["dimension"];
table_schema.created_on_ = resRow["created_on"];
table_schema.flag_ = resRow["flag"];
table_schema.index_file_size_ = resRow["index_file_size"];
table_schema.engine_type_ = resRow["engine_type"];
resRow["index_params"].to_string(table_schema.index_params_);
table_schema.metric_type_ = resRow["metric_type"];
resRow["owner_table"].to_string(table_schema.owner_table_);
resRow["partition_tag"].to_string(table_schema.partition_tag_);
resRow["version"].to_string(table_schema.version_);
table_schema.flush_lsn_ = resRow["flush_lsn"];
} else {
return Status(DB_NOT_FOUND, "Table " + table_schema.table_id_ + " not found");
}
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN DESCRIBING TABLE", e.what());
}
return Status::OK();
}
Status
MySQLMetaImpl::HasTable(const std::string& table_id, bool& has_or_not) {
try {
server::MetricCollector metric;
mysqlpp::StoreQueryResult res;
{
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
bool is_null_connection = (connectionPtr == nullptr);
fiu_do_on("MySQLMetaImpl.HasTable.null_connection", is_null_connection = true);
fiu_do_on("MySQLMetaImpl.HasTable.throw_exception", throw std::exception(););
if (is_null_connection) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
mysqlpp::Query hasTableQuery = connectionPtr->query();
// since table_id is a unique column we just need to check whether it exists or not
hasTableQuery << "SELECT EXISTS"
<< " (SELECT 1 FROM " << META_TABLES << " WHERE table_id = " << mysqlpp::quote << table_id
<< " AND state <> " << std::to_string(TableSchema::TO_DELETE) << ")"
<< " AS " << mysqlpp::quote << "check"
<< ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::HasTable: " << hasTableQuery.str();
res = hasTableQuery.store();
} // Scoped Connection
int check = res[0]["check"];
has_or_not = (check == 1);
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN CHECKING IF TABLE EXISTS", e.what());
}
return Status::OK();
}
Status
MySQLMetaImpl::AllTables(std::vector<TableSchema>& table_schema_array) {
try {
server::MetricCollector metric;
mysqlpp::StoreQueryResult res;
{
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
bool is_null_connection = (connectionPtr == nullptr);
fiu_do_on("MySQLMetaImpl.AllTable.null_connection", is_null_connection = true);
fiu_do_on("MySQLMetaImpl.AllTable.throw_exception", throw std::exception(););
if (is_null_connection) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
mysqlpp::Query allTablesQuery = connectionPtr->query();
allTablesQuery << "SELECT id, table_id, dimension, engine_type, index_params, index_file_size, metric_type"
<< " ,owner_table, partition_tag, version, flush_lsn"
<< " FROM " << META_TABLES << " WHERE state <> " << std::to_string(TableSchema::TO_DELETE)
<< " AND owner_table = \"\";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::AllTables: " << allTablesQuery.str();
res = allTablesQuery.store();
} // Scoped Connection
for (auto& resRow : res) {
TableSchema table_schema;
table_schema.id_ = resRow["id"]; // implicit conversion
resRow["table_id"].to_string(table_schema.table_id_);
table_schema.dimension_ = resRow["dimension"];
table_schema.index_file_size_ = resRow["index_file_size"];
table_schema.engine_type_ = resRow["engine_type"];
resRow["index_params"].to_string(table_schema.index_params_);
table_schema.metric_type_ = resRow["metric_type"];
resRow["owner_table"].to_string(table_schema.owner_table_);
resRow["partition_tag"].to_string(table_schema.partition_tag_);
resRow["version"].to_string(table_schema.version_);
table_schema.flush_lsn_ = resRow["flush_lsn"];
table_schema_array.emplace_back(table_schema);
}
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN DESCRIBING ALL TABLES", e.what());
}
return Status::OK();
}
Status
MySQLMetaImpl::DropTable(const std::string& table_id) {
try {
server::MetricCollector metric;
{
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
bool is_null_connection = (connectionPtr == nullptr);
fiu_do_on("MySQLMetaImpl.DropTable.null_connection", is_null_connection = true);
fiu_do_on("MySQLMetaImpl.DropTable.throw_exception", throw std::exception(););
if (is_null_connection) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
// soft delete table
mysqlpp::Query deleteTableQuery = connectionPtr->query();
//
deleteTableQuery << "UPDATE " << META_TABLES << " SET state = " << std::to_string(TableSchema::TO_DELETE)
<< " WHERE table_id = " << mysqlpp::quote << table_id << ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::DeleteTable: " << deleteTableQuery.str();
if (!deleteTableQuery.exec()) {
return HandleException("QUERY ERROR WHEN DELETING TABLE", deleteTableQuery.error());
}
} // Scoped Connection
bool is_writable_mode{mode_ == DBOptions::MODE::CLUSTER_WRITABLE};
fiu_do_on("MySQLMetaImpl.DropTable.CLUSTER_WRITABLE_MODE", is_writable_mode = true);
if (is_writable_mode) {
DeleteTableFiles(table_id);
}
ENGINE_LOG_DEBUG << "Successfully delete table, table id = " << table_id;
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN DELETING TABLE", e.what());
}
return Status::OK();
}
Status
MySQLMetaImpl::DeleteTableFiles(const std::string& table_id) {
try {
server::MetricCollector metric;
{
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
bool is_null_connection = (connectionPtr == nullptr);
fiu_do_on("MySQLMetaImpl.DeleteTableFiles.null_connection", is_null_connection = true);
fiu_do_on("MySQLMetaImpl.DeleteTableFiles.throw_exception", throw std::exception(););
if (is_null_connection) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
// soft delete table files
mysqlpp::Query deleteTableFilesQuery = connectionPtr->query();
//
deleteTableFilesQuery << "UPDATE " << META_TABLEFILES
<< " SET file_type = " << std::to_string(TableFileSchema::TO_DELETE)
<< " ,updated_time = " << std::to_string(utils::GetMicroSecTimeStamp())
<< " WHERE table_id = " << mysqlpp::quote << table_id << " AND file_type <> "
<< std::to_string(TableFileSchema::TO_DELETE) << ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::DeleteTableFiles: " << deleteTableFilesQuery.str();
if (!deleteTableFilesQuery.exec()) {
return HandleException("QUERY ERROR WHEN DELETING TABLE FILES", deleteTableFilesQuery.error());
}
} // Scoped Connection
ENGINE_LOG_DEBUG << "Successfully delete table files, table id = " << table_id;
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN DELETING TABLE FILES", e.what());
}
return Status::OK();
}
Status
MySQLMetaImpl::CreateTableFile(TableFileSchema& file_schema) {
if (file_schema.date_ == EmptyDate) {
file_schema.date_ = utils::GetDate();
}
TableSchema table_schema;
table_schema.table_id_ = file_schema.table_id_;
auto status = DescribeTable(table_schema);
if (!status.ok()) {
return status;
}
try {
server::MetricCollector metric;
NextFileId(file_schema.file_id_);
if (file_schema.segment_id_.empty()) {
file_schema.segment_id_ = file_schema.file_id_;
}
file_schema.dimension_ = table_schema.dimension_;
file_schema.file_size_ = 0;
file_schema.row_count_ = 0;
file_schema.created_on_ = utils::GetMicroSecTimeStamp();
file_schema.updated_time_ = file_schema.created_on_;
file_schema.index_file_size_ = table_schema.index_file_size_;
file_schema.index_params_ = table_schema.index_params_;
file_schema.engine_type_ = table_schema.engine_type_;
file_schema.metric_type_ = table_schema.metric_type_;
std::string id = "NULL"; // auto-increment
std::string table_id = file_schema.table_id_;
std::string segment_id = file_schema.segment_id_;
std::string engine_type = std::to_string(file_schema.engine_type_);
std::string file_id = file_schema.file_id_;
std::string file_type = std::to_string(file_schema.file_type_);
std::string file_size = std::to_string(file_schema.file_size_);
std::string row_count = std::to_string(file_schema.row_count_);
std::string updated_time = std::to_string(file_schema.updated_time_);
std::string created_on = std::to_string(file_schema.created_on_);
std::string date = std::to_string(file_schema.date_);
std::string flush_lsn = std::to_string(file_schema.flush_lsn_);
{
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
bool is_null_connection = (connectionPtr == nullptr);
fiu_do_on("MySQLMetaImpl.CreateTableFiles.null_connection", is_null_connection = true);
fiu_do_on("MySQLMetaImpl.CreateTableFiles.throw_exception", throw std::exception(););
if (is_null_connection) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
mysqlpp::Query createTableFileQuery = connectionPtr->query();
createTableFileQuery << "INSERT INTO " << META_TABLEFILES << " VALUES(" << id << ", " << mysqlpp::quote
<< table_id << ", " << mysqlpp::quote << segment_id << ", " << engine_type << ", "
<< mysqlpp::quote << file_id << ", " << file_type << ", " << file_size << ", "
<< row_count << ", " << updated_time << ", " << created_on << ", " << date << ", "
<< flush_lsn << ");";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::CreateTableFile: " << createTableFileQuery.str();
if (mysqlpp::SimpleResult res = createTableFileQuery.execute()) {
file_schema.id_ = res.insert_id(); // Might need to use SELECT LAST_INSERT_ID()?
// Consume all results to avoid "Commands out of sync" error
} else {
return HandleException("QUERY ERROR WHEN CREATING TABLE FILE", createTableFileQuery.error());
}
} // Scoped Connection
ENGINE_LOG_DEBUG << "Successfully create table file, file id = " << file_schema.file_id_;
return utils::CreateTableFilePath(options_, file_schema);
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN CREATING TABLE FILE", e.what());
}
}
Status
MySQLMetaImpl::GetTableFiles(const std::string& table_id, const std::vector<size_t>& ids,
TableFilesSchema& table_files) {
if (ids.empty()) {
return Status::OK();
}
std::stringstream idSS;
for (auto& id : ids) {
idSS << "id = " << std::to_string(id) << " OR ";
}
std::string idStr = idSS.str();
idStr = idStr.substr(0, idStr.size() - 4); // remove the last " OR "
try {
mysqlpp::StoreQueryResult res;
{
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
bool is_null_connection = (connectionPtr == nullptr);
fiu_do_on("MySQLMetaImpl.GetTableFiles.null_connection", is_null_connection = true);
fiu_do_on("MySQLMetaImpl.GetTableFiles.throw_exception", throw std::exception(););
if (is_null_connection) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
mysqlpp::Query getTableFileQuery = connectionPtr->query();
getTableFileQuery
<< "SELECT id, segment_id, engine_type, file_id, file_type, file_size, row_count, date, created_on"
<< " FROM " << META_TABLEFILES << " WHERE table_id = " << mysqlpp::quote << table_id << " AND ("
<< idStr << ")"
<< " AND file_type <> " << std::to_string(TableFileSchema::TO_DELETE) << ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::GetTableFiles: " << getTableFileQuery.str();
res = getTableFileQuery.store();
} // Scoped Connection
TableSchema table_schema;
table_schema.table_id_ = table_id;
DescribeTable(table_schema);
Status ret;
for (auto& resRow : res) {
TableFileSchema file_schema;
file_schema.id_ = resRow["id"];
file_schema.table_id_ = table_id;
resRow["segment_id"].to_string(file_schema.segment_id_);
file_schema.index_file_size_ = table_schema.index_file_size_;
file_schema.engine_type_ = resRow["engine_type"];
file_schema.index_params_ = table_schema.index_params_;
file_schema.metric_type_ = table_schema.metric_type_;
resRow["file_id"].to_string(file_schema.file_id_);
file_schema.file_type_ = resRow["file_type"];
file_schema.file_size_ = resRow["file_size"];
file_schema.row_count_ = resRow["row_count"];
file_schema.date_ = resRow["date"];
file_schema.created_on_ = resRow["created_on"];
file_schema.dimension_ = table_schema.dimension_;
utils::GetTableFilePath(options_, file_schema);
table_files.emplace_back(file_schema);
}
ENGINE_LOG_DEBUG << "Get table files by id";
return ret;
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN RETRIEVING TABLE FILES", e.what());
}
}
Status
MySQLMetaImpl::GetTableFilesBySegmentId(const std::string& segment_id,
milvus::engine::meta::TableFilesSchema& table_files) {
try {
mysqlpp::StoreQueryResult res;
{
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
if (connectionPtr == nullptr) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
mysqlpp::Query getTableFileQuery = connectionPtr->query();
getTableFileQuery << "SELECT id, table_id, segment_id, engine_type, file_id, file_type, file_size, "
<< "row_count, date, created_on"
<< " FROM " << META_TABLEFILES << " WHERE segment_id = " << mysqlpp::quote << segment_id
<< " AND file_type <> " << std::to_string(TableFileSchema::TO_DELETE) << ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::GetTableFilesBySegmentId: " << getTableFileQuery.str();
res = getTableFileQuery.store();
} // Scoped Connection
if (!res.empty()) {
TableSchema table_schema;
res[0]["table_id"].to_string(table_schema.table_id_);
auto status = DescribeTable(table_schema);
if (!status.ok()) {
return status;
}
for (auto& resRow : res) {
TableFileSchema file_schema;
file_schema.id_ = resRow["id"];
file_schema.table_id_ = table_schema.table_id_;
resRow["segment_id"].to_string(file_schema.segment_id_);
file_schema.index_file_size_ = table_schema.index_file_size_;
file_schema.engine_type_ = resRow["engine_type"];
file_schema.index_params_ = table_schema.index_params_;
file_schema.metric_type_ = table_schema.metric_type_;
resRow["file_id"].to_string(file_schema.file_id_);
file_schema.file_type_ = resRow["file_type"];
file_schema.file_size_ = resRow["file_size"];
file_schema.row_count_ = resRow["row_count"];
file_schema.date_ = resRow["date"];
file_schema.created_on_ = resRow["created_on"];
file_schema.dimension_ = table_schema.dimension_;
utils::GetTableFilePath(options_, file_schema);
table_files.emplace_back(file_schema);
}
}
ENGINE_LOG_DEBUG << "Get table files by segment id";
return Status::OK();
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN RETRIEVING TABLE FILES BY SEGMENT ID", e.what());
}
}
Status
MySQLMetaImpl::UpdateTableIndex(const std::string& table_id, const TableIndex& index) {
try {
server::MetricCollector metric;
{
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
bool is_null_connection = (connectionPtr == nullptr);
fiu_do_on("MySQLMetaImpl.UpdateTableIndex.null_connection", is_null_connection = true);
fiu_do_on("MySQLMetaImpl.UpdateTableIndex.throw_exception", throw std::exception(););
if (is_null_connection) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
mysqlpp::Query updateTableIndexParamQuery = connectionPtr->query();
updateTableIndexParamQuery << "SELECT id, state, dimension, created_on"
<< " FROM " << META_TABLES << " WHERE table_id = " << mysqlpp::quote << table_id
<< " AND state <> " << std::to_string(TableSchema::TO_DELETE) << ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::UpdateTableIndex: " << updateTableIndexParamQuery.str();
mysqlpp::StoreQueryResult res = updateTableIndexParamQuery.store();
if (res.num_rows() == 1) {
const mysqlpp::Row& resRow = res[0];
size_t id = resRow["id"];
int32_t state = resRow["state"];
uint16_t dimension = resRow["dimension"];
int64_t created_on = resRow["created_on"];
updateTableIndexParamQuery << "UPDATE " << META_TABLES << " SET id = " << id << " ,state = " << state
<< " ,dimension = " << dimension << " ,created_on = " << created_on
<< " ,engine_type = " << index.engine_type_
<< " ,index_params = " << mysqlpp::quote << index.extra_params_.dump()
<< " ,metric_type = " << index.metric_type_
<< " WHERE table_id = " << mysqlpp::quote << table_id << ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::UpdateTableIndex: " << updateTableIndexParamQuery.str();
if (!updateTableIndexParamQuery.exec()) {
return HandleException("QUERY ERROR WHEN UPDATING TABLE INDEX PARAM",
updateTableIndexParamQuery.error());
}
} else {
return Status(DB_NOT_FOUND, "Table " + table_id + " not found");
}
} // Scoped Connection
ENGINE_LOG_DEBUG << "Successfully update table index, table id = " << table_id;
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN UPDATING TABLE INDEX PARAM", e.what());
}
return Status::OK();
}
Status
MySQLMetaImpl::UpdateTableFlag(const std::string& table_id, int64_t flag) {
try {
server::MetricCollector metric;
{
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
bool is_null_connection = (connectionPtr == nullptr);
fiu_do_on("MySQLMetaImpl.UpdateTableFlag.null_connection", is_null_connection = true);
fiu_do_on("MySQLMetaImpl.UpdateTableFlag.throw_exception", throw std::exception(););
if (is_null_connection) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
mysqlpp::Query updateTableFlagQuery = connectionPtr->query();
updateTableFlagQuery << "UPDATE " << META_TABLES << " SET flag = " << flag
<< " WHERE table_id = " << mysqlpp::quote << table_id << ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::UpdateTableFlag: " << updateTableFlagQuery.str();
if (!updateTableFlagQuery.exec()) {
return HandleException("QUERY ERROR WHEN UPDATING TABLE FLAG", updateTableFlagQuery.error());
}
} // Scoped Connection
ENGINE_LOG_DEBUG << "Successfully update table flag, table id = " << table_id;
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN UPDATING TABLE FLAG", e.what());
}
return Status::OK();
}
Status
MySQLMetaImpl::UpdateTableFlushLSN(const std::string& table_id, uint64_t flush_lsn) {
try {
server::MetricCollector metric;
{
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
if (connectionPtr == nullptr) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
mysqlpp::Query updateTableFlagQuery = connectionPtr->query();
updateTableFlagQuery << "UPDATE " << META_TABLES << " SET flush_lsn = " << flush_lsn
<< " WHERE table_id = " << mysqlpp::quote << table_id << ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::UpdateTableFlushLSN: " << updateTableFlagQuery.str();
if (!updateTableFlagQuery.exec()) {
return HandleException("QUERY ERROR WHEN UPDATING TABLE FLUSH_LSN", updateTableFlagQuery.error());
}
} // Scoped Connection
ENGINE_LOG_DEBUG << "Successfully update table flush_lsn, table id = " << table_id;
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN UPDATING TABLE FLUSH_LSN", e.what());
}
return Status::OK();
}
Status
MySQLMetaImpl::GetTableFlushLSN(const std::string& table_id, uint64_t& flush_lsn) {
return Status::OK();
}
Status
MySQLMetaImpl::GetTableFilesByFlushLSN(uint64_t flush_lsn, TableFilesSchema& table_files) {
table_files.clear();
try {
server::MetricCollector metric;
mysqlpp::StoreQueryResult res;
{
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
if (connectionPtr == nullptr) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
mysqlpp::Query filesToIndexQuery = connectionPtr->query();
filesToIndexQuery << "SELECT id, table_id, segment_id, engine_type, file_id, file_type, file_size, "
"row_count, date, created_on"
<< " FROM " << META_TABLEFILES << " WHERE flush_lsn = " << flush_lsn << ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::FilesToIndex: " << filesToIndexQuery.str();
res = filesToIndexQuery.store();
} // Scoped Connection
Status ret;
std::map<std::string, TableSchema> groups;
TableFileSchema table_file;
for (auto& resRow : res) {
table_file.id_ = resRow["id"]; // implicit conversion
resRow["table_id"].to_string(table_file.table_id_);
resRow["segment_id"].to_string(table_file.segment_id_);
table_file.engine_type_ = resRow["engine_type"];
resRow["file_id"].to_string(table_file.file_id_);
table_file.file_type_ = resRow["file_type"];
table_file.file_size_ = resRow["file_size"];
table_file.row_count_ = resRow["row_count"];
table_file.date_ = resRow["date"];
table_file.created_on_ = resRow["created_on"];
auto groupItr = groups.find(table_file.table_id_);
if (groupItr == groups.end()) {
TableSchema table_schema;
table_schema.table_id_ = table_file.table_id_;
auto status = DescribeTable(table_schema);
if (!status.ok()) {
return status;
}
groups[table_file.table_id_] = table_schema;
}
table_file.dimension_ = groups[table_file.table_id_].dimension_;
table_file.index_file_size_ = groups[table_file.table_id_].index_file_size_;
table_file.index_params_ = groups[table_file.table_id_].index_params_;
table_file.metric_type_ = groups[table_file.table_id_].metric_type_;
auto status = utils::GetTableFilePath(options_, table_file);
if (!status.ok()) {
ret = status;
}
table_files.push_back(table_file);
}
if (res.size() > 0) {
ENGINE_LOG_DEBUG << "Collect " << res.size() << " files with flush_lsn = " << flush_lsn;
}
return ret;
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN FINDING TABLE FILES BY LSN", e.what());
}
}
// ZR: this function assumes all fields in file_schema have value
Status
MySQLMetaImpl::UpdateTableFile(TableFileSchema& file_schema) {
file_schema.updated_time_ = utils::GetMicroSecTimeStamp();
try {
server::MetricCollector metric;
{
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
bool is_null_connection = (connectionPtr == nullptr);
fiu_do_on("MySQLMetaImpl.UpdateTableFile.null_connection", is_null_connection = true);
fiu_do_on("MySQLMetaImpl.UpdateTableFile.throw_exception", throw std::exception(););
if (is_null_connection) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
mysqlpp::Query updateTableFileQuery = connectionPtr->query();
// if the table has been deleted, just mark the table file as TO_DELETE
// clean thread will delete the file later
updateTableFileQuery << "SELECT state FROM " << META_TABLES << " WHERE table_id = " << mysqlpp::quote
<< file_schema.table_id_ << ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::UpdateTableFile: " << updateTableFileQuery.str();
mysqlpp::StoreQueryResult res = updateTableFileQuery.store();
if (res.num_rows() == 1) {
int state = res[0]["state"];
if (state == TableSchema::TO_DELETE) {
file_schema.file_type_ = TableFileSchema::TO_DELETE;
}
} else {
file_schema.file_type_ = TableFileSchema::TO_DELETE;
}
std::string id = std::to_string(file_schema.id_);
std::string table_id = file_schema.table_id_;
std::string engine_type = std::to_string(file_schema.engine_type_);
std::string file_id = file_schema.file_id_;
std::string file_type = std::to_string(file_schema.file_type_);
std::string file_size = std::to_string(file_schema.file_size_);
std::string row_count = std::to_string(file_schema.row_count_);
std::string updated_time = std::to_string(file_schema.updated_time_);
std::string created_on = std::to_string(file_schema.created_on_);
std::string date = std::to_string(file_schema.date_);
updateTableFileQuery << "UPDATE " << META_TABLEFILES << " SET table_id = " << mysqlpp::quote << table_id
<< " ,engine_type = " << engine_type << " ,file_id = " << mysqlpp::quote << file_id
<< " ,file_type = " << file_type << " ,file_size = " << file_size
<< " ,row_count = " << row_count << " ,updated_time = " << updated_time
<< " ,created_on = " << created_on << " ,date = " << date << " WHERE id = " << id
<< ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::UpdateTableFile: " << updateTableFileQuery.str();
if (!updateTableFileQuery.exec()) {
ENGINE_LOG_DEBUG << "table_id= " << file_schema.table_id_ << " file_id=" << file_schema.file_id_;
return HandleException("QUERY ERROR WHEN UPDATING TABLE FILE", updateTableFileQuery.error());
}
} // Scoped Connection
ENGINE_LOG_DEBUG << "Update single table file, file id = " << file_schema.file_id_;
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN UPDATING TABLE FILE", e.what());
}
return Status::OK();
}
Status
MySQLMetaImpl::UpdateTableFilesToIndex(const std::string& table_id) {
try {
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
bool is_null_connection = (connectionPtr == nullptr);
fiu_do_on("MySQLMetaImpl.UpdateTableFilesToIndex.null_connection", is_null_connection = true);
fiu_do_on("MySQLMetaImpl.UpdateTableFilesToIndex.throw_exception", throw std::exception(););
if (is_null_connection) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
mysqlpp::Query updateTableFilesToIndexQuery = connectionPtr->query();
updateTableFilesToIndexQuery << "UPDATE " << META_TABLEFILES
<< " SET file_type = " << std::to_string(TableFileSchema::TO_INDEX)
<< " WHERE table_id = " << mysqlpp::quote << table_id
<< " AND row_count >= " << std::to_string(meta::BUILD_INDEX_THRESHOLD)
<< " AND file_type = " << std::to_string(TableFileSchema::RAW) << ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::UpdateTableFilesToIndex: " << updateTableFilesToIndexQuery.str();
if (!updateTableFilesToIndexQuery.exec()) {
return HandleException("QUERY ERROR WHEN UPDATING TABLE FILE TO INDEX",
updateTableFilesToIndexQuery.error());
}
ENGINE_LOG_DEBUG << "Update files to to_index, table id = " << table_id;
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN UPDATING TABLE FILES TO INDEX", e.what());
}
return Status::OK();
}
Status
MySQLMetaImpl::UpdateTableFiles(TableFilesSchema& files) {
try {
server::MetricCollector metric;
{
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
bool is_null_connection = (connectionPtr == nullptr);
fiu_do_on("MySQLMetaImpl.UpdateTableFiles.null_connection", is_null_connection = true);
fiu_do_on("MySQLMetaImpl.UpdateTableFiles.throw_exception", throw std::exception(););
if (is_null_connection) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
mysqlpp::Query updateTableFilesQuery = connectionPtr->query();
std::map<std::string, bool> has_tables;
for (auto& file_schema : files) {
if (has_tables.find(file_schema.table_id_) != has_tables.end()) {
continue;
}
updateTableFilesQuery << "SELECT EXISTS"
<< " (SELECT 1 FROM " << META_TABLES << " WHERE table_id = " << mysqlpp::quote
<< file_schema.table_id_ << " AND state <> "
<< std::to_string(TableSchema::TO_DELETE) << ")"
<< " AS " << mysqlpp::quote << "check"
<< ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::UpdateTableFiles: " << updateTableFilesQuery.str();
mysqlpp::StoreQueryResult res = updateTableFilesQuery.store();
int check = res[0]["check"];
has_tables[file_schema.table_id_] = (check == 1);
}
for (auto& file_schema : files) {
if (!has_tables[file_schema.table_id_]) {
file_schema.file_type_ = TableFileSchema::TO_DELETE;
}
file_schema.updated_time_ = utils::GetMicroSecTimeStamp();
std::string id = std::to_string(file_schema.id_);
std::string& table_id = file_schema.table_id_;
std::string engine_type = std::to_string(file_schema.engine_type_);
std::string& file_id = file_schema.file_id_;
std::string file_type = std::to_string(file_schema.file_type_);
std::string file_size = std::to_string(file_schema.file_size_);
std::string row_count = std::to_string(file_schema.row_count_);
std::string updated_time = std::to_string(file_schema.updated_time_);
std::string created_on = std::to_string(file_schema.created_on_);
std::string date = std::to_string(file_schema.date_);
updateTableFilesQuery << "UPDATE " << META_TABLEFILES << " SET table_id = " << mysqlpp::quote
<< table_id << " ,engine_type = " << engine_type
<< " ,file_id = " << mysqlpp::quote << file_id << " ,file_type = " << file_type
<< " ,file_size = " << file_size << " ,row_count = " << row_count
<< " ,updated_time = " << updated_time << " ,created_on = " << created_on
<< " ,date = " << date << " WHERE id = " << id << ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::UpdateTableFiles: " << updateTableFilesQuery.str();
if (!updateTableFilesQuery.exec()) {
return HandleException("QUERY ERROR WHEN UPDATING TABLE FILES", updateTableFilesQuery.error());
}
}
} // Scoped Connection
ENGINE_LOG_DEBUG << "Update " << files.size() << " table files";
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN UPDATING TABLE FILES", e.what());
}
return Status::OK();
}
Status
MySQLMetaImpl::DescribeTableIndex(const std::string& table_id, TableIndex& index) {
try {
server::MetricCollector metric;
{
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
bool is_null_connection = (connectionPtr == nullptr);
fiu_do_on("MySQLMetaImpl.DescribeTableIndex.null_connection", is_null_connection = true);
fiu_do_on("MySQLMetaImpl.DescribeTableIndex.throw_exception", throw std::exception(););
if (is_null_connection) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
mysqlpp::Query describeTableIndexQuery = connectionPtr->query();
describeTableIndexQuery << "SELECT engine_type, index_params, index_file_size, metric_type"
<< " FROM " << META_TABLES << " WHERE table_id = " << mysqlpp::quote << table_id
<< " AND state <> " << std::to_string(TableSchema::TO_DELETE) << ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::DescribeTableIndex: " << describeTableIndexQuery.str();
mysqlpp::StoreQueryResult res = describeTableIndexQuery.store();
if (res.num_rows() == 1) {
const mysqlpp::Row& resRow = res[0];
index.engine_type_ = resRow["engine_type"];
std::string str_index_params;
resRow["index_params"].to_string(str_index_params);
index.extra_params_ = milvus::json::parse(str_index_params);
index.metric_type_ = resRow["metric_type"];
} else {
return Status(DB_NOT_FOUND, "Table " + table_id + " not found");
}
} // Scoped Connection
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN UPDATING TABLE FLAG", e.what());
}
return Status::OK();
}
Status
MySQLMetaImpl::DropTableIndex(const std::string& table_id) {
try {
server::MetricCollector metric;
{
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
bool is_null_connection = (connectionPtr == nullptr);
fiu_do_on("MySQLMetaImpl.DropTableIndex.null_connection", is_null_connection = true);
fiu_do_on("MySQLMetaImpl.DropTableIndex.throw_exception", throw std::exception(););
if (is_null_connection) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
mysqlpp::Query dropTableIndexQuery = connectionPtr->query();
// soft delete index files
dropTableIndexQuery << "UPDATE " << META_TABLEFILES
<< " SET file_type = " << std::to_string(TableFileSchema::TO_DELETE)
<< " ,updated_time = " << utils::GetMicroSecTimeStamp()
<< " WHERE table_id = " << mysqlpp::quote << table_id
<< " AND file_type = " << std::to_string(TableFileSchema::INDEX) << ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::DropTableIndex: " << dropTableIndexQuery.str();
if (!dropTableIndexQuery.exec()) {
return HandleException("QUERY ERROR WHEN DROPPING TABLE INDEX", dropTableIndexQuery.error());
}
// set all backup file to raw
dropTableIndexQuery << "UPDATE " << META_TABLEFILES
<< " SET file_type = " << std::to_string(TableFileSchema::RAW)
<< " ,updated_time = " << utils::GetMicroSecTimeStamp()
<< " WHERE table_id = " << mysqlpp::quote << table_id
<< " AND file_type = " << std::to_string(TableFileSchema::BACKUP) << ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::DropTableIndex: " << dropTableIndexQuery.str();
if (!dropTableIndexQuery.exec()) {
return HandleException("QUERY ERROR WHEN DROPPING TABLE INDEX", dropTableIndexQuery.error());
}
// set table index type to raw
dropTableIndexQuery << "UPDATE " << META_TABLES << " SET engine_type = "
<< " (CASE"
<< " WHEN metric_type in (" << (int32_t)MetricType::HAMMING << " ,"
<< (int32_t)MetricType::JACCARD << " ," << (int32_t)MetricType::TANIMOTO << ")"
<< " THEN " << (int32_t)EngineType::FAISS_BIN_IDMAP << " ELSE "
<< (int32_t)EngineType::FAISS_IDMAP << " END)"
<< " , index_params = '{}'"
<< " WHERE table_id = " << mysqlpp::quote << table_id << ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::DropTableIndex: " << dropTableIndexQuery.str();
if (!dropTableIndexQuery.exec()) {
return HandleException("QUERY ERROR WHEN DROPPING TABLE INDEX", dropTableIndexQuery.error());
}
} // Scoped Connection
ENGINE_LOG_DEBUG << "Successfully drop table index, table id = " << table_id;
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN DROPPING TABLE INDEX", e.what());
}
return Status::OK();
}
Status
MySQLMetaImpl::CreatePartition(const std::string& table_id, const std::string& partition_name, const std::string& tag,
uint64_t lsn) {
server::MetricCollector metric;
TableSchema table_schema;
table_schema.table_id_ = table_id;
auto status = DescribeTable(table_schema);
if (!status.ok()) {
return status;
}
// not allow create partition under partition
if (!table_schema.owner_table_.empty()) {
return Status(DB_ERROR, "Nested partition is not allowed");
}
// trim side-blank of tag, only compare valid characters
// for example: " ab cd " is treated as "ab cd"
std::string valid_tag = tag;
server::StringHelpFunctions::TrimStringBlank(valid_tag);
// not allow duplicated partition
std::string exist_partition;
GetPartitionName(table_id, valid_tag, exist_partition);
if (!exist_partition.empty()) {
return Status(DB_ERROR, "Duplicate partition is not allowed");
}
if (partition_name == "") {
// generate unique partition name
NextTableId(table_schema.table_id_);
} else {
table_schema.table_id_ = partition_name;
}
table_schema.id_ = -1;
table_schema.flag_ = 0;
table_schema.created_on_ = utils::GetMicroSecTimeStamp();
table_schema.owner_table_ = table_id;
table_schema.partition_tag_ = valid_tag;
table_schema.flush_lsn_ = lsn;
status = CreateTable(table_schema);
fiu_do_on("MySQLMetaImpl.CreatePartition.aleady_exist", status = Status(DB_ALREADY_EXIST, ""));
if (status.code() == DB_ALREADY_EXIST) {
return Status(DB_ALREADY_EXIST, "Partition already exists");
}
return status;
}
Status
MySQLMetaImpl::DropPartition(const std::string& partition_name) {
return DropTable(partition_name);
}
Status
MySQLMetaImpl::ShowPartitions(const std::string& table_id, std::vector<meta::TableSchema>& partition_schema_array) {
try {
server::MetricCollector metric;
mysqlpp::StoreQueryResult res;
{
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
bool is_null_connection = (connectionPtr == nullptr);
fiu_do_on("MySQLMetaImpl.ShowPartitions.null_connection", is_null_connection = true);
fiu_do_on("MySQLMetaImpl.ShowPartitions.throw_exception", throw std::exception(););
if (is_null_connection) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
mysqlpp::Query allPartitionsQuery = connectionPtr->query();
allPartitionsQuery << "SELECT table_id, id, state, dimension, created_on, flag, index_file_size,"
<< " engine_type, index_params, metric_type, partition_tag, version FROM " << META_TABLES
<< " WHERE owner_table = " << mysqlpp::quote << table_id << " AND state <> "
<< std::to_string(TableSchema::TO_DELETE) << ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::AllTables: " << allPartitionsQuery.str();
res = allPartitionsQuery.store();
} // Scoped Connection
for (auto& resRow : res) {
meta::TableSchema partition_schema;
resRow["table_id"].to_string(partition_schema.table_id_);
partition_schema.id_ = resRow["id"]; // implicit conversion
partition_schema.state_ = resRow["state"];
partition_schema.dimension_ = resRow["dimension"];
partition_schema.created_on_ = resRow["created_on"];
partition_schema.flag_ = resRow["flag"];
partition_schema.index_file_size_ = resRow["index_file_size"];
partition_schema.engine_type_ = resRow["engine_type"];
resRow["index_params"].to_string(partition_schema.index_params_);
partition_schema.metric_type_ = resRow["metric_type"];
partition_schema.owner_table_ = table_id;
resRow["partition_tag"].to_string(partition_schema.partition_tag_);
resRow["version"].to_string(partition_schema.version_);
partition_schema_array.emplace_back(partition_schema);
}
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN SHOW PARTITIONS", e.what());
}
return Status::OK();
}
Status
MySQLMetaImpl::GetPartitionName(const std::string& table_id, const std::string& tag, std::string& partition_name) {
try {
server::MetricCollector metric;
mysqlpp::StoreQueryResult res;
// trim side-blank of tag, only compare valid characters
// for example: " ab cd " is treated as "ab cd"
std::string valid_tag = tag;
server::StringHelpFunctions::TrimStringBlank(valid_tag);
{
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
bool is_null_connection = (connectionPtr == nullptr);
fiu_do_on("MySQLMetaImpl.GetPartitionName.null_connection", is_null_connection = true);
fiu_do_on("MySQLMetaImpl.GetPartitionName.throw_exception", throw std::exception(););
if (is_null_connection) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
mysqlpp::Query allPartitionsQuery = connectionPtr->query();
allPartitionsQuery << "SELECT table_id FROM " << META_TABLES << " WHERE owner_table = " << mysqlpp::quote
<< table_id << " AND partition_tag = " << mysqlpp::quote << valid_tag << " AND state <> "
<< std::to_string(TableSchema::TO_DELETE) << ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::AllTables: " << allPartitionsQuery.str();
res = allPartitionsQuery.store();
} // Scoped Connection
if (res.num_rows() > 0) {
const mysqlpp::Row& resRow = res[0];
resRow["table_id"].to_string(partition_name);
} else {
return Status(DB_NOT_FOUND, "Partition " + valid_tag + " of table " + table_id + " not found");
}
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN GET PARTITION NAME", e.what());
}
return Status::OK();
}
Status
MySQLMetaImpl::FilesToSearch(const std::string& table_id, const std::vector<size_t>& ids, TableFilesSchema& files) {
files.clear();
try {
server::MetricCollector metric;
mysqlpp::StoreQueryResult res;
{
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
bool is_null_connection = (connectionPtr == nullptr);
fiu_do_on("MySQLMetaImpl.FilesToSearch.null_connection", is_null_connection = true);
fiu_do_on("MySQLMetaImpl.FilesToSearch.throw_exception", throw std::exception(););
if (is_null_connection) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
mysqlpp::Query filesToSearchQuery = connectionPtr->query();
filesToSearchQuery
<< "SELECT id, table_id, segment_id, engine_type, file_id, file_type, file_size, row_count, date"
<< " FROM " << META_TABLEFILES << " WHERE table_id = " << mysqlpp::quote << table_id;
if (!ids.empty()) {
std::stringstream idSS;
for (auto& id : ids) {
idSS << "id = " << std::to_string(id) << " OR ";
}
std::string idStr = idSS.str();
idStr = idStr.substr(0, idStr.size() - 4); // remove the last " OR "
filesToSearchQuery << " AND (" << idStr << ")";
}
// End
filesToSearchQuery << " AND"
<< " (file_type = " << std::to_string(TableFileSchema::RAW)
<< " OR file_type = " << std::to_string(TableFileSchema::TO_INDEX)
<< " OR file_type = " << std::to_string(TableFileSchema::INDEX) << ");";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::FilesToSearch: " << filesToSearchQuery.str();
res = filesToSearchQuery.store();
} // Scoped Connection
TableSchema table_schema;
table_schema.table_id_ = table_id;
auto status = DescribeTable(table_schema);
if (!status.ok()) {
return status;
}
Status ret;
for (auto& resRow : res) {
TableFileSchema table_file;
table_file.id_ = resRow["id"]; // implicit conversion
resRow["table_id"].to_string(table_file.table_id_);
resRow["segment_id"].to_string(table_file.segment_id_);
table_file.index_file_size_ = table_schema.index_file_size_;
table_file.engine_type_ = resRow["engine_type"];
table_file.index_params_ = table_schema.index_params_;
table_file.metric_type_ = table_schema.metric_type_;
resRow["file_id"].to_string(table_file.file_id_);
table_file.file_type_ = resRow["file_type"];
table_file.file_size_ = resRow["file_size"];
table_file.row_count_ = resRow["row_count"];
table_file.date_ = resRow["date"];
table_file.dimension_ = table_schema.dimension_;
auto status = utils::GetTableFilePath(options_, table_file);
if (!status.ok()) {
ret = status;
}
files.emplace_back(table_file);
}
if (res.size() > 0) {
ENGINE_LOG_DEBUG << "Collect " << res.size() << " to-search files";
}
return ret;
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN FINDING TABLE FILES TO SEARCH", e.what());
}
}
Status
MySQLMetaImpl::FilesToMerge(const std::string& table_id, TableFilesSchema& files) {
files.clear();
try {
server::MetricCollector metric;
// check table existence
TableSchema table_schema;
table_schema.table_id_ = table_id;
auto status = DescribeTable(table_schema);
if (!status.ok()) {
return status;
}
mysqlpp::StoreQueryResult res;
{
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
bool is_null_connection = (connectionPtr == nullptr);
fiu_do_on("MySQLMetaImpl.FilesToMerge.null_connection", is_null_connection = true);
fiu_do_on("MySQLMetaImpl.FilesToMerge.throw_exception", throw std::exception(););
if (is_null_connection) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
mysqlpp::Query filesToMergeQuery = connectionPtr->query();
filesToMergeQuery << "SELECT id, table_id, segment_id, file_id, file_type, file_size, row_count, date, "
"engine_type, created_on"
<< " FROM " << META_TABLEFILES << " WHERE table_id = " << mysqlpp::quote << table_id
<< " AND file_type = " << std::to_string(TableFileSchema::RAW)
<< " ORDER BY row_count DESC;";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::FilesToMerge: " << filesToMergeQuery.str();
res = filesToMergeQuery.store();
} // Scoped Connection
Status ret;
int64_t to_merge_files = 0;
for (auto& resRow : res) {
TableFileSchema table_file;
table_file.file_size_ = resRow["file_size"];
if (table_file.file_size_ >= table_schema.index_file_size_) {
continue; // skip large file
}
table_file.id_ = resRow["id"]; // implicit conversion
resRow["table_id"].to_string(table_file.table_id_);
resRow["segment_id"].to_string(table_file.segment_id_);
resRow["file_id"].to_string(table_file.file_id_);
table_file.file_type_ = resRow["file_type"];
table_file.row_count_ = resRow["row_count"];
table_file.date_ = resRow["date"];
table_file.index_file_size_ = table_schema.index_file_size_;
table_file.engine_type_ = resRow["engine_type"];
table_file.index_params_ = table_schema.index_params_;
table_file.metric_type_ = table_schema.metric_type_;
table_file.created_on_ = resRow["created_on"];
table_file.dimension_ = table_schema.dimension_;
auto status = utils::GetTableFilePath(options_, table_file);
if (!status.ok()) {
ret = status;
}
files.emplace_back(table_file);
++to_merge_files;
}
if (to_merge_files > 0) {
ENGINE_LOG_TRACE << "Collect " << to_merge_files << " to-merge files";
}
return ret;
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN FINDING TABLE FILES TO MERGE", e.what());
}
}
Status
MySQLMetaImpl::FilesToIndex(TableFilesSchema& files) {
files.clear();
try {
server::MetricCollector metric;
mysqlpp::StoreQueryResult res;
{
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
bool is_null_connection = (connectionPtr == nullptr);
fiu_do_on("MySQLMetaImpl.FilesToIndex.null_connection", is_null_connection = true);
fiu_do_on("MySQLMetaImpl.FilesToIndex.throw_exception", throw std::exception(););
if (is_null_connection) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
mysqlpp::Query filesToIndexQuery = connectionPtr->query();
filesToIndexQuery << "SELECT id, table_id, segment_id, engine_type, file_id, file_type, file_size, "
"row_count, date, created_on"
<< " FROM " << META_TABLEFILES
<< " WHERE file_type = " << std::to_string(TableFileSchema::TO_INDEX) << ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::FilesToIndex: " << filesToIndexQuery.str();
res = filesToIndexQuery.store();
} // Scoped Connection
Status ret;
std::map<std::string, TableSchema> groups;
TableFileSchema table_file;
for (auto& resRow : res) {
table_file.id_ = resRow["id"]; // implicit conversion
resRow["table_id"].to_string(table_file.table_id_);
resRow["segment_id"].to_string(table_file.segment_id_);
table_file.engine_type_ = resRow["engine_type"];
resRow["file_id"].to_string(table_file.file_id_);
table_file.file_type_ = resRow["file_type"];
table_file.file_size_ = resRow["file_size"];
table_file.row_count_ = resRow["row_count"];
table_file.date_ = resRow["date"];
table_file.created_on_ = resRow["created_on"];
auto groupItr = groups.find(table_file.table_id_);
if (groupItr == groups.end()) {
TableSchema table_schema;
table_schema.table_id_ = table_file.table_id_;
auto status = DescribeTable(table_schema);
if (!status.ok()) {
return status;
}
groups[table_file.table_id_] = table_schema;
}
table_file.dimension_ = groups[table_file.table_id_].dimension_;
table_file.index_file_size_ = groups[table_file.table_id_].index_file_size_;
table_file.index_params_ = groups[table_file.table_id_].index_params_;
table_file.metric_type_ = groups[table_file.table_id_].metric_type_;
auto status = utils::GetTableFilePath(options_, table_file);
if (!status.ok()) {
ret = status;
}
files.push_back(table_file);
}
if (res.size() > 0) {
ENGINE_LOG_DEBUG << "Collect " << res.size() << " to-index files";
}
return ret;
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN FINDING TABLE FILES TO INDEX", e.what());
}
}
Status
MySQLMetaImpl::FilesByType(const std::string& table_id, const std::vector<int>& file_types,
TableFilesSchema& table_files) {
if (file_types.empty()) {
return Status(DB_ERROR, "file types array is empty");
}
Status ret = Status::OK();
try {
table_files.clear();
mysqlpp::StoreQueryResult res;
{
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
bool is_null_connection = (connectionPtr == nullptr);
fiu_do_on("MySQLMetaImpl.FilesByType.null_connection", is_null_connection = true);
fiu_do_on("MySQLMetaImpl.FilesByType.throw_exception", throw std::exception(););
if (is_null_connection) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
std::string types;
for (auto type : file_types) {
if (!types.empty()) {
types += ",";
}
types += std::to_string(type);
}
mysqlpp::Query hasNonIndexFilesQuery = connectionPtr->query();
// since table_id is a unique column we just need to check whether it exists or not
hasNonIndexFilesQuery
<< "SELECT id, segment_id, engine_type, file_id, file_type, file_size, row_count, date, created_on"
<< " FROM " << META_TABLEFILES << " WHERE table_id = " << mysqlpp::quote << table_id
<< " AND file_type in (" << types << ");";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::FilesByType: " << hasNonIndexFilesQuery.str();
res = hasNonIndexFilesQuery.store();
} // Scoped Connection
TableSchema table_schema;
table_schema.table_id_ = table_id;
auto status = DescribeTable(table_schema);
if (!status.ok()) {
return status;
}
if (res.num_rows() > 0) {
int raw_count = 0, new_count = 0, new_merge_count = 0, new_index_count = 0;
int to_index_count = 0, index_count = 0, backup_count = 0;
for (auto& resRow : res) {
TableFileSchema file_schema;
file_schema.id_ = resRow["id"];
file_schema.table_id_ = table_id;
resRow["segment_id"].to_string(file_schema.segment_id_);
file_schema.engine_type_ = resRow["engine_type"];
resRow["file_id"].to_string(file_schema.file_id_);
file_schema.file_type_ = resRow["file_type"];
file_schema.file_size_ = resRow["file_size"];
file_schema.row_count_ = resRow["row_count"];
file_schema.date_ = resRow["date"];
file_schema.created_on_ = resRow["created_on"];
file_schema.index_file_size_ = table_schema.index_file_size_;
file_schema.index_params_ = table_schema.index_params_;
file_schema.metric_type_ = table_schema.metric_type_;
file_schema.dimension_ = table_schema.dimension_;
auto status = utils::GetTableFilePath(options_, file_schema);
if (!status.ok()) {
ret = status;
}
table_files.emplace_back(file_schema);
int32_t file_type = resRow["file_type"];
switch (file_type) {
case (int)TableFileSchema::RAW:
++raw_count;
break;
case (int)TableFileSchema::NEW:
++new_count;
break;
case (int)TableFileSchema::NEW_MERGE:
++new_merge_count;
break;
case (int)TableFileSchema::NEW_INDEX:
++new_index_count;
break;
case (int)TableFileSchema::TO_INDEX:
++to_index_count;
break;
case (int)TableFileSchema::INDEX:
++index_count;
break;
case (int)TableFileSchema::BACKUP:
++backup_count;
break;
default:
break;
}
}
std::string msg = "Get table files by type.";
for (int file_type : file_types) {
switch (file_type) {
case (int)TableFileSchema::RAW:
msg = msg + " raw files:" + std::to_string(raw_count);
break;
case (int)TableFileSchema::NEW:
msg = msg + " new files:" + std::to_string(new_count);
break;
case (int)TableFileSchema::NEW_MERGE:
msg = msg + " new_merge files:" + std::to_string(new_merge_count);
break;
case (int)TableFileSchema::NEW_INDEX:
msg = msg + " new_index files:" + std::to_string(new_index_count);
break;
case (int)TableFileSchema::TO_INDEX:
msg = msg + " to_index files:" + std::to_string(to_index_count);
break;
case (int)TableFileSchema::INDEX:
msg = msg + " index files:" + std::to_string(index_count);
break;
case (int)TableFileSchema::BACKUP:
msg = msg + " backup files:" + std::to_string(backup_count);
break;
default:
break;
}
}
ENGINE_LOG_DEBUG << msg;
}
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN GET FILE BY TYPE", e.what());
}
return ret;
}
// TODO(myh): Support swap to cloud storage
Status
MySQLMetaImpl::Archive() {
auto& criterias = options_.archive_conf_.GetCriterias();
if (criterias.empty()) {
return Status::OK();
}
for (auto& kv : criterias) {
auto& criteria = kv.first;
auto& limit = kv.second;
if (criteria == engine::ARCHIVE_CONF_DAYS) {
size_t usecs = limit * DAY * US_PS;
int64_t now = utils::GetMicroSecTimeStamp();
try {
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
bool is_null_connection = (connectionPtr == nullptr);
fiu_do_on("MySQLMetaImpl.Archive.null_connection", is_null_connection = true);
fiu_do_on("MySQLMetaImpl.Archive.throw_exception", throw std::exception(););
if (is_null_connection) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
mysqlpp::Query archiveQuery = connectionPtr->query();
archiveQuery << "UPDATE " << META_TABLEFILES
<< " SET file_type = " << std::to_string(TableFileSchema::TO_DELETE)
<< " WHERE created_on < " << std::to_string(now - usecs) << " AND file_type <> "
<< std::to_string(TableFileSchema::TO_DELETE) << ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::Archive: " << archiveQuery.str();
if (!archiveQuery.exec()) {
return HandleException("QUERY ERROR DURING ARCHIVE", archiveQuery.error());
}
ENGINE_LOG_DEBUG << "Archive old files";
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN DURING ARCHIVE", e.what());
}
}
if (criteria == engine::ARCHIVE_CONF_DISK) {
uint64_t sum = 0;
Size(sum);
auto to_delete = (sum - limit * G);
DiscardFiles(to_delete);
ENGINE_LOG_DEBUG << "Archive files to free disk";
}
}
return Status::OK();
}
Status
MySQLMetaImpl::Size(uint64_t& result) {
result = 0;
try {
mysqlpp::StoreQueryResult res;
{
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
bool is_null_connection = (connectionPtr == nullptr);
fiu_do_on("MySQLMetaImpl.Size.null_connection", is_null_connection = true);
fiu_do_on("MySQLMetaImpl.Size.throw_exception", throw std::exception(););
if (is_null_connection) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
mysqlpp::Query getSizeQuery = connectionPtr->query();
getSizeQuery << "SELECT IFNULL(SUM(file_size),0) AS sum"
<< " FROM " << META_TABLEFILES << " WHERE file_type <> "
<< std::to_string(TableFileSchema::TO_DELETE) << ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::Size: " << getSizeQuery.str();
res = getSizeQuery.store();
} // Scoped Connection
if (res.empty()) {
result = 0;
} else {
result = res[0]["sum"];
}
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN RETRIEVING SIZE", e.what());
}
return Status::OK();
}
Status
MySQLMetaImpl::CleanUpShadowFiles() {
try {
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
bool is_null_connection = (connectionPtr == nullptr);
fiu_do_on("MySQLMetaImpl.CleanUpShadowFiles.null_connection", is_null_connection = true);
fiu_do_on("MySQLMetaImpl.CleanUpShadowFiles.throw_exception", throw std::exception(););
if (is_null_connection) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
mysqlpp::Query cleanUpQuery = connectionPtr->query();
cleanUpQuery << "SELECT table_name"
<< " FROM information_schema.tables"
<< " WHERE table_schema = " << mysqlpp::quote << mysql_connection_pool_->getDB()
<< " AND table_name = " << mysqlpp::quote << META_TABLEFILES << ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::CleanUp: " << cleanUpQuery.str();
mysqlpp::StoreQueryResult res = cleanUpQuery.store();
if (!res.empty()) {
ENGINE_LOG_DEBUG << "Remove table file type as NEW";
cleanUpQuery << "DELETE FROM " << META_TABLEFILES << " WHERE file_type IN ("
<< std::to_string(TableFileSchema::NEW) << "," << std::to_string(TableFileSchema::NEW_MERGE)
<< "," << std::to_string(TableFileSchema::NEW_INDEX) << ");";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::CleanUp: " << cleanUpQuery.str();
if (!cleanUpQuery.exec()) {
return HandleException("QUERY ERROR WHEN CLEANING UP FILES", cleanUpQuery.error());
}
}
if (res.size() > 0) {
ENGINE_LOG_DEBUG << "Clean " << res.size() << " files";
}
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN CLEANING UP FILES", e.what());
}
return Status::OK();
}
Status
MySQLMetaImpl::CleanUpFilesWithTTL(uint64_t seconds /*, CleanUpFilter* filter*/) {
auto now = utils::GetMicroSecTimeStamp();
std::set<std::string> table_ids;
std::map<std::string, TableFileSchema> segment_ids;
// remove to_delete files
try {
server::MetricCollector metric;
{
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
bool is_null_connection = (connectionPtr == nullptr);
fiu_do_on("MySQLMetaImpl.CleanUpFilesWithTTL.RomoveToDeleteFiles_NullConnection",
is_null_connection = true);
fiu_do_on("MySQLMetaImpl.CleanUpFilesWithTTL.RomoveToDeleteFiles_ThrowException", throw std::exception(););
if (is_null_connection) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
mysqlpp::Query query = connectionPtr->query();
query << "SELECT id, table_id, segment_id, engine_type, file_id, file_type, date"
<< " FROM " << META_TABLEFILES << " WHERE file_type IN ("
<< std::to_string(TableFileSchema::TO_DELETE) << "," << std::to_string(TableFileSchema::BACKUP) << ")"
<< " AND updated_time < " << std::to_string(now - seconds * US_PS) << ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::CleanUpFilesWithTTL: " << query.str();
mysqlpp::StoreQueryResult res = query.store();
TableFileSchema table_file;
std::vector<std::string> delete_ids;
int64_t clean_files = 0;
for (auto& resRow : res) {
table_file.id_ = resRow["id"]; // implicit conversion
resRow["table_id"].to_string(table_file.table_id_);
resRow["segment_id"].to_string(table_file.segment_id_);
table_file.engine_type_ = resRow["engine_type"];
resRow["file_id"].to_string(table_file.file_id_);
table_file.date_ = resRow["date"];
table_file.file_type_ = resRow["file_type"];
// check if the file can be deleted
if (OngoingFileChecker::GetInstance().IsIgnored(table_file)) {
ENGINE_LOG_DEBUG << "File:" << table_file.file_id_
<< " currently is in use, not able to delete now";
continue; // ignore this file, don't delete it
}
// erase file data from cache
// because GetTableFilePath won't able to generate file path after the file is deleted
utils::GetTableFilePath(options_, table_file);
server::CommonUtil::EraseFromCache(table_file.location_);
if (table_file.file_type_ == (int)TableFileSchema::TO_DELETE) {
// delete file from disk storage
utils::DeleteTableFilePath(options_, table_file);
ENGINE_LOG_DEBUG << "Remove file id:" << table_file.id_ << " location:" << table_file.location_;
delete_ids.emplace_back(std::to_string(table_file.id_));
table_ids.insert(table_file.table_id_);
segment_ids.insert(std::make_pair(table_file.segment_id_, table_file));
clean_files++;
}
}
// delete file from meta
if (!delete_ids.empty()) {
std::stringstream idsToDeleteSS;
for (auto& id : delete_ids) {
idsToDeleteSS << "id = " << id << " OR ";
}
std::string idsToDeleteStr = idsToDeleteSS.str();
idsToDeleteStr = idsToDeleteStr.substr(0, idsToDeleteStr.size() - 4); // remove the last " OR "
query << "DELETE FROM " << META_TABLEFILES << " WHERE " << idsToDeleteStr << ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::CleanUpFilesWithTTL: " << query.str();
if (!query.exec()) {
return HandleException("QUERY ERROR WHEN CLEANING UP FILES WITH TTL", query.error());
}
}
if (clean_files > 0) {
ENGINE_LOG_DEBUG << "Clean " << clean_files << " files expired in " << seconds << " seconds";
}
} // Scoped Connection
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN CLEANING UP FILES WITH TTL", e.what());
}
// remove to_delete tables
try {
server::MetricCollector metric;
{
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
bool is_null_connection = (connectionPtr == nullptr);
fiu_do_on("MySQLMetaImpl.CleanUpFilesWithTTL.RemoveToDeleteTables_NUllConnection",
is_null_connection = true);
fiu_do_on("MySQLMetaImpl.CleanUpFilesWithTTL.RemoveToDeleteTables_ThrowException", throw std::exception(););
if (is_null_connection) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
mysqlpp::Query query = connectionPtr->query();
query << "SELECT id, table_id"
<< " FROM " << META_TABLES << " WHERE state = " << std::to_string(TableSchema::TO_DELETE) << ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::CleanUpFilesWithTTL: " << query.str();
mysqlpp::StoreQueryResult res = query.store();
int64_t remove_tables = 0;
if (!res.empty()) {
std::stringstream idsToDeleteSS;
for (auto& resRow : res) {
size_t id = resRow["id"];
std::string table_id;
resRow["table_id"].to_string(table_id);
utils::DeleteTablePath(options_, table_id, false); // only delete empty folder
++remove_tables;
idsToDeleteSS << "id = " << std::to_string(id) << " OR ";
}
std::string idsToDeleteStr = idsToDeleteSS.str();
idsToDeleteStr = idsToDeleteStr.substr(0, idsToDeleteStr.size() - 4); // remove the last " OR "
query << "DELETE FROM " << META_TABLES << " WHERE " << idsToDeleteStr << ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::CleanUpFilesWithTTL: " << query.str();
if (!query.exec()) {
return HandleException("QUERY ERROR WHEN CLEANING UP TABLES WITH TTL", query.error());
}
}
if (remove_tables > 0) {
ENGINE_LOG_DEBUG << "Remove " << remove_tables << " tables from meta";
}
} // Scoped Connection
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN CLEANING UP TABLES WITH TTL", e.what());
}
// remove deleted table folder
// don't remove table folder until all its files has been deleted
try {
server::MetricCollector metric;
{
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
bool is_null_connection = (connectionPtr == nullptr);
fiu_do_on("MySQLMetaImpl.CleanUpFilesWithTTL.RemoveDeletedTableFolder_NUllConnection",
is_null_connection = true);
fiu_do_on("MySQLMetaImpl.CleanUpFilesWithTTL.RemoveDeletedTableFolder_ThrowException",
throw std::exception(););
if (is_null_connection) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
for (auto& table_id : table_ids) {
mysqlpp::Query query = connectionPtr->query();
query << "SELECT file_id"
<< " FROM " << META_TABLEFILES << " WHERE table_id = " << mysqlpp::quote << table_id << ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::CleanUpFilesWithTTL: " << query.str();
mysqlpp::StoreQueryResult res = query.store();
if (res.empty()) {
utils::DeleteTablePath(options_, table_id);
}
}
if (table_ids.size() > 0) {
ENGINE_LOG_DEBUG << "Remove " << table_ids.size() << " tables folder";
}
}
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN CLEANING UP TABLES WITH TTL", e.what());
}
// remove deleted segment folder
// don't remove segment folder until all its tablefiles has been deleted
try {
server::MetricCollector metric;
{
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
bool is_null_connection = (connectionPtr == nullptr);
fiu_do_on("MySQLMetaImpl.CleanUpFilesWithTTL.RemoveDeletedSegmentFolder_NUllConnection",
is_null_connection = true);
fiu_do_on("MySQLMetaImpl.CleanUpFilesWithTTL.RemoveDeletedSegmentFolder_ThrowException",
throw std::exception(););
if (is_null_connection) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
int64_t remove_segments = 0;
for (auto& segment_id : segment_ids) {
mysqlpp::Query query = connectionPtr->query();
query << "SELECT id"
<< " FROM " << META_TABLEFILES << " WHERE segment_id = " << mysqlpp::quote << segment_id.first
<< ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::CleanUpFilesWithTTL: " << query.str();
mysqlpp::StoreQueryResult res = query.store();
if (res.empty()) {
utils::DeleteSegment(options_, segment_id.second);
std::string segment_dir;
utils::GetParentPath(segment_id.second.location_, segment_dir);
ENGINE_LOG_DEBUG << "Remove segment directory: " << segment_dir;
++remove_segments;
}
}
if (remove_segments > 0) {
ENGINE_LOG_DEBUG << "Remove " << remove_segments << " segments folder";
}
}
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN CLEANING UP TABLES WITH TTL", e.what());
}
return Status::OK();
}
Status
MySQLMetaImpl::Count(const std::string& table_id, uint64_t& result) {
try {
server::MetricCollector metric;
TableSchema table_schema;
table_schema.table_id_ = table_id;
auto status = DescribeTable(table_schema);
if (!status.ok()) {
return status;
}
mysqlpp::StoreQueryResult res;
{
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
bool is_null_connection = (connectionPtr == nullptr);
fiu_do_on("MySQLMetaImpl.Count.null_connection", is_null_connection = true);
fiu_do_on("MySQLMetaImpl.Count.throw_exception", throw std::exception(););
if (is_null_connection) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
mysqlpp::Query countQuery = connectionPtr->query();
countQuery << "SELECT row_count"
<< " FROM " << META_TABLEFILES << " WHERE table_id = " << mysqlpp::quote << table_id
<< " AND (file_type = " << std::to_string(TableFileSchema::RAW)
<< " OR file_type = " << std::to_string(TableFileSchema::TO_INDEX)
<< " OR file_type = " << std::to_string(TableFileSchema::INDEX) << ");";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::Count: " << countQuery.str();
res = countQuery.store();
} // Scoped Connection
result = 0;
for (auto& resRow : res) {
size_t size = resRow["row_count"];
result += size;
}
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN RETRIEVING COUNT", e.what());
}
return Status::OK();
}
Status
MySQLMetaImpl::DropAll() {
try {
ENGINE_LOG_DEBUG << "Drop all mysql meta";
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
bool is_null_connection = (connectionPtr == nullptr);
fiu_do_on("MySQLMetaImpl.DropAll.null_connection", is_null_connection = true);
fiu_do_on("MySQLMetaImpl.DropAll.throw_exception", throw std::exception(););
if (is_null_connection) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
mysqlpp::Query dropTableQuery = connectionPtr->query();
dropTableQuery << "DROP TABLE IF EXISTS " << TABLES_SCHEMA.name() << ", " << TABLEFILES_SCHEMA.name() << ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::DropAll: " << dropTableQuery.str();
if (dropTableQuery.exec()) {
return Status::OK();
}
return HandleException("QUERY ERROR WHEN DROPPING ALL", dropTableQuery.error());
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN DROPPING ALL", e.what());
}
}
Status
MySQLMetaImpl::DiscardFiles(int64_t to_discard_size) {
if (to_discard_size <= 0) {
return Status::OK();
}
ENGINE_LOG_DEBUG << "About to discard size=" << to_discard_size;
try {
server::MetricCollector metric;
bool status;
{
mysqlpp::ScopedConnection connectionPtr(*mysql_connection_pool_, safe_grab_);
bool is_null_connection = (connectionPtr == nullptr);
fiu_do_on("MySQLMetaImpl.DiscardFiles.null_connection", is_null_connection = true);
fiu_do_on("MySQLMetaImpl.DiscardFiles.throw_exception", throw std::exception(););
if (is_null_connection) {
return Status(DB_ERROR, "Failed to connect to meta server(mysql)");
}
mysqlpp::Query discardFilesQuery = connectionPtr->query();
discardFilesQuery << "SELECT id, file_size"
<< " FROM " << META_TABLEFILES << " WHERE file_type <> "
<< std::to_string(TableFileSchema::TO_DELETE) << " ORDER BY id ASC "
<< " LIMIT 10;";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::DiscardFiles: " << discardFilesQuery.str();
mysqlpp::StoreQueryResult res = discardFilesQuery.store();
if (res.num_rows() == 0) {
return Status::OK();
}
TableFileSchema table_file;
std::stringstream idsToDiscardSS;
for (auto& resRow : res) {
if (to_discard_size <= 0) {
break;
}
table_file.id_ = resRow["id"];
table_file.file_size_ = resRow["file_size"];
idsToDiscardSS << "id = " << std::to_string(table_file.id_) << " OR ";
ENGINE_LOG_DEBUG << "Discard table_file.id=" << table_file.file_id_
<< " table_file.size=" << table_file.file_size_;
to_discard_size -= table_file.file_size_;
}
std::string idsToDiscardStr = idsToDiscardSS.str();
idsToDiscardStr = idsToDiscardStr.substr(0, idsToDiscardStr.size() - 4); // remove the last " OR "
discardFilesQuery << "UPDATE " << META_TABLEFILES
<< " SET file_type = " << std::to_string(TableFileSchema::TO_DELETE)
<< " ,updated_time = " << std::to_string(utils::GetMicroSecTimeStamp()) << " WHERE "
<< idsToDiscardStr << ";";
ENGINE_LOG_DEBUG << "MySQLMetaImpl::DiscardFiles: " << discardFilesQuery.str();
status = discardFilesQuery.exec();
if (!status) {
return HandleException("QUERY ERROR WHEN DISCARDING FILES", discardFilesQuery.error());
}
} // Scoped Connection
return DiscardFiles(to_discard_size);
} catch (std::exception& e) {
return HandleException("GENERAL ERROR WHEN DISCARDING FILES", e.what());
}
}
Status
MySQLMetaImpl::SetGlobalLastLSN(uint64_t lsn) {
return Status::OK();
}
Status
MySQLMetaImpl::GetGlobalLastLSN(uint64_t& lsn) {
return Status::OK();
}
} // namespace meta
} // namespace engine
} // namespace milvus
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