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catalog.cpp
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//===----------------------------------------------------------------------===//
//
// Peloton
//
// catalog.cpp
//
// Identification: src/catalog/catalog.cpp
//
// Copyright (c) 2015-2018, Carnegie Mellon University Database Group
//
//===----------------------------------------------------------------------===//
#include "catalog/catalog.h"
#include "catalog/column_catalog.h"
#include "catalog/database_catalog.h"
#include "catalog/database_metrics_catalog.h"
#include "catalog/foreign_key.h"
#include "catalog/index_catalog.h"
#include "catalog/index_metrics_catalog.h"
#include "catalog/language_catalog.h"
#include "catalog/proc_catalog.h"
#include "catalog/query_history_catalog.h"
#include "catalog/query_metrics_catalog.h"
#include "catalog/settings_catalog.h"
#include "catalog/table_catalog.h"
#include "catalog/table_metrics_catalog.h"
#include "catalog/trigger_catalog.h"
#include "concurrency/transaction_manager_factory.h"
#include "function/date_functions.h"
#include "function/decimal_functions.h"
#include "function/old_engine_string_functions.h"
#include "function/timestamp_functions.h"
#include "index/index_factory.h"
#include "settings/settings_manager.h"
#include "storage/storage_manager.h"
#include "storage/table_factory.h"
#include "type/ephemeral_pool.h"
namespace peloton {
namespace catalog {
// Get instance of the global catalog
Catalog *Catalog::GetInstance() {
static Catalog global_catalog;
return &global_catalog;
}
/* Initialization of catalog, including:
* 1) create pg_catalog database, create catalog tables, add them into
* pg_catalog database, insert columns into pg_attribute
* 2) create necessary indexes, insert into pg_index
* 3) insert pg_catalog into pg_database, catalog tables into pg_table
*/
Catalog::Catalog() : pool_(new type::EphemeralPool()) {
// Begin transaction for catalog initialization
auto &txn_manager = concurrency::TransactionManagerFactory::GetInstance();
auto txn = txn_manager.BeginTransaction();
auto storage_manager = storage::StorageManager::GetInstance();
// Create pg_catalog database
auto pg_catalog = new storage::Database(CATALOG_DATABASE_OID);
pg_catalog->setDBName(CATALOG_DATABASE_NAME);
storage_manager->AddDatabaseToStorageManager(pg_catalog);
// Create catalog tables
auto pg_database = DatabaseCatalog::GetInstance(pg_catalog, pool_.get(), txn);
auto pg_table = TableCatalog::GetInstance(pg_catalog, pool_.get(), txn);
IndexCatalog::GetInstance(pg_catalog, pool_.get(), txn);
// ColumnCatalog::GetInstance(); // Called implicitly
// Create indexes on catalog tables, insert them into pg_index
// note that CreateIndex() from catalog.cpp will create index on storage level
// table and at the same time insert a new index record into pg_index
// TODO: This should be hash index rather than tree index?? (but postgres use
// btree!!)
CreatePrimaryIndex(CATALOG_DATABASE_OID, DATABASE_CATALOG_OID, txn);
CreatePrimaryIndex(CATALOG_DATABASE_OID, TABLE_CATALOG_OID, txn);
CreateIndex(CATALOG_DATABASE_OID, DATABASE_CATALOG_OID,
{DatabaseCatalog::ColumnId::DATABASE_NAME},
DATABASE_CATALOG_NAME "_skey0", IndexType::BWTREE,
IndexConstraintType::UNIQUE, true, txn, true);
CreateIndex(CATALOG_DATABASE_OID, TABLE_CATALOG_OID,
{TableCatalog::ColumnId::TABLE_NAME,
TableCatalog::ColumnId::DATABASE_OID},
TABLE_CATALOG_NAME "_skey0", IndexType::BWTREE,
IndexConstraintType::UNIQUE, true, txn, true);
CreateIndex(CATALOG_DATABASE_OID, TABLE_CATALOG_OID,
{TableCatalog::ColumnId::DATABASE_OID},
TABLE_CATALOG_NAME "_skey1", IndexType::BWTREE,
IndexConstraintType::DEFAULT, false, txn, true);
// actual index already added in column_catalog, index_catalog constructor
// the reason we treat those two catalog tables differently is that indexes
// needs to be built before insert tuples into table
IndexCatalog::GetInstance()->InsertIndex(
COLUMN_CATALOG_PKEY_OID, COLUMN_CATALOG_NAME "_pkey", COLUMN_CATALOG_OID,
IndexType::BWTREE, IndexConstraintType::PRIMARY_KEY, true,
{ColumnCatalog::ColumnId::TABLE_OID,
ColumnCatalog::ColumnId::COLUMN_NAME},
pool_.get(), txn);
IndexCatalog::GetInstance()->InsertIndex(
COLUMN_CATALOG_SKEY0_OID, COLUMN_CATALOG_NAME "_skey0",
COLUMN_CATALOG_OID, IndexType::BWTREE, IndexConstraintType::UNIQUE, true,
{ColumnCatalog::ColumnId::TABLE_OID, ColumnCatalog::ColumnId::COLUMN_ID},
pool_.get(), txn);
IndexCatalog::GetInstance()->InsertIndex(
COLUMN_CATALOG_SKEY1_OID, COLUMN_CATALOG_NAME "_skey1",
COLUMN_CATALOG_OID, IndexType::BWTREE, IndexConstraintType::DEFAULT,
false, {ColumnCatalog::ColumnId::TABLE_OID}, pool_.get(), txn);
IndexCatalog::GetInstance()->InsertIndex(
INDEX_CATALOG_PKEY_OID, INDEX_CATALOG_NAME "_pkey", INDEX_CATALOG_OID,
IndexType::BWTREE, IndexConstraintType::PRIMARY_KEY, true,
{IndexCatalog::ColumnId::INDEX_OID}, pool_.get(), txn);
IndexCatalog::GetInstance()->InsertIndex(
INDEX_CATALOG_SKEY0_OID, INDEX_CATALOG_NAME "_skey0", INDEX_CATALOG_OID,
IndexType::BWTREE, IndexConstraintType::UNIQUE, true,
{IndexCatalog::ColumnId::INDEX_NAME}, pool_.get(), txn);
IndexCatalog::GetInstance()->InsertIndex(
INDEX_CATALOG_SKEY1_OID, INDEX_CATALOG_NAME "_skey1", INDEX_CATALOG_OID,
IndexType::BWTREE, IndexConstraintType::DEFAULT, false,
{IndexCatalog::ColumnId::TABLE_OID}, pool_.get(), txn);
// Insert pg_catalog database into pg_database
pg_database->InsertDatabase(CATALOG_DATABASE_OID, CATALOG_DATABASE_NAME,
pool_.get(), txn);
// Insert catalog tables into pg_table
pg_table->InsertTable(DATABASE_CATALOG_OID, DATABASE_CATALOG_NAME,
CATALOG_DATABASE_OID, pool_.get(), txn);
pg_table->InsertTable(TABLE_CATALOG_OID, TABLE_CATALOG_NAME,
CATALOG_DATABASE_OID, pool_.get(), txn);
pg_table->InsertTable(INDEX_CATALOG_OID, INDEX_CATALOG_NAME,
CATALOG_DATABASE_OID, pool_.get(), txn);
pg_table->InsertTable(COLUMN_CATALOG_OID, COLUMN_CATALOG_NAME,
CATALOG_DATABASE_OID, pool_.get(), txn);
// Commit transaction
txn_manager.CommitTransaction(txn);
}
void Catalog::Bootstrap() {
auto &txn_manager = concurrency::TransactionManagerFactory::GetInstance();
auto txn = txn_manager.BeginTransaction();
DatabaseMetricsCatalog::GetInstance(txn);
TableMetricsCatalog::GetInstance(txn);
IndexMetricsCatalog::GetInstance(txn);
QueryMetricsCatalog::GetInstance(txn);
SettingsCatalog::GetInstance(txn);
TriggerCatalog::GetInstance(txn);
LanguageCatalog::GetInstance(txn);
ProcCatalog::GetInstance(txn);
if (settings::SettingsManager::GetBool(settings::SettingId::brain)) {
QueryHistoryCatalog::GetInstance(txn);
}
txn_manager.CommitTransaction(txn);
InitializeLanguages();
InitializeFunctions();
}
//===----------------------------------------------------------------------===//
// CREATE FUNCTIONS
//===----------------------------------------------------------------------===//
ResultType Catalog::CreateDatabase(const std::string &database_name,
concurrency::TransactionContext *txn) {
if (txn == nullptr)
throw CatalogException("Do not have transaction to create database " +
database_name);
auto pg_database = DatabaseCatalog::GetInstance();
auto storage_manager = storage::StorageManager::GetInstance();
// Check if a database with the same name exists
auto database_object = pg_database->GetDatabaseObject(database_name, txn);
if (database_object != nullptr)
throw CatalogException("Database " + database_name + " already exists");
// Create actual database
oid_t database_oid = pg_database->GetNextOid();
storage::Database *database = new storage::Database(database_oid);
// TODO: This should be deprecated, dbname should only exists in pg_db
database->setDBName(database_name);
{
std::lock_guard<std::mutex> lock(catalog_mutex);
storage_manager->AddDatabaseToStorageManager(database);
}
// put database object into rw_object_set
txn->RecordCreate(database_oid, INVALID_OID, INVALID_OID);
// Insert database record into pg_db
pg_database->InsertDatabase(database_oid, database_name, pool_.get(), txn);
LOG_TRACE("Database %s created. Returning RESULT_SUCCESS.",
database_name.c_str());
return ResultType::SUCCESS;
}
/*@brief create table
* @param database_name the database which the table belongs to
* @param table_name name of the table to add index on
* @param schema schema, a.k.a metadata of the table
* @param txn TransactionContext
* @return TransactionContext ResultType(SUCCESS or FAILURE)
*/
ResultType Catalog::CreateTable(const std::string &database_name,
const std::string &table_name,
std::unique_ptr<catalog::Schema> schema,
concurrency::TransactionContext *txn,
bool is_catalog, oid_t tuples_per_tilegroup) {
if (txn == nullptr)
throw CatalogException("Do not have transaction to create table " +
table_name);
LOG_TRACE("Creating table %s in database %s", table_name.c_str(),
database_name.c_str());
// get database oid from pg_database
auto database_object =
DatabaseCatalog::GetInstance()->GetDatabaseObject(database_name, txn);
if (database_object == nullptr)
throw CatalogException("Can't find Database " + database_name +
" to create table");
// get table oid from pg_table
auto table_object = database_object->GetTableObject(table_name);
if (table_object != nullptr)
throw CatalogException("Table " + table_name + " already exists");
auto storage_manager = storage::StorageManager::GetInstance();
auto database =
storage_manager->GetDatabaseWithOid(database_object->GetDatabaseOid());
// Check duplicate column names
std::set<std::string> column_names;
auto columns = schema.get()->GetColumns();
for (auto column : columns) {
auto column_name = column.GetName();
if (column_names.count(column_name) == 1)
throw CatalogException("Can't create table " + table_name +
" with duplicate column name");
column_names.insert(column_name);
}
// Create actual table
auto pg_table = TableCatalog::GetInstance();
oid_t table_oid = pg_table->GetNextOid();
bool own_schema = true;
bool adapt_table = false;
auto table = storage::TableFactory::GetDataTable(
database_object->GetDatabaseOid(), table_oid, schema.release(),
table_name, tuples_per_tilegroup, own_schema, adapt_table, is_catalog);
database->AddTable(table, is_catalog);
// put data table object into rw_object_set
txn->RecordCreate(database_object->GetDatabaseOid(), table_oid, INVALID_OID);
// Update pg_table with table info
pg_table->InsertTable(table_oid, table_name,
database_object->GetDatabaseOid(), pool_.get(), txn);
oid_t column_id = 0;
for (const auto &column : table->GetSchema()->GetColumns()) {
ColumnCatalog::GetInstance()->InsertColumn(
table_oid, column.GetName(), column_id, column.GetOffset(),
column.GetType(), column.IsInlined(), column.GetConstraints(),
pool_.get(), txn);
// Create index on unique single column
if (column.IsUnique()) {
std::string col_name = column.GetName();
std::string index_name = table->GetName() + "_" + col_name + "_UNIQ";
CreateIndex(database_name, table_name, {column_id}, index_name, true,
IndexType::BWTREE, txn);
LOG_DEBUG("Added a UNIQUE index on %s in %s.", col_name.c_str(),
table_name.c_str());
}
column_id++;
}
CreatePrimaryIndex(database_object->GetDatabaseOid(), table_oid, txn);
return ResultType::SUCCESS;
}
/*@brief create primary index on table
* Note that this is a catalog helper function only called within catalog.cpp
* If you want to create index on table outside, call CreateIndex() instead
* @param database_oid the database which the indexed table belongs to
* @param table_oid oid of the table to add index on
* @param txn TransactionContext
* @return TransactionContext ResultType(SUCCESS or FAILURE)
*/
ResultType Catalog::CreatePrimaryIndex(oid_t database_oid, oid_t table_oid,
concurrency::TransactionContext *txn) {
LOG_TRACE("Trying to create primary index for table %d", table_oid);
auto storage_manager = storage::StorageManager::GetInstance();
auto database = storage_manager->GetDatabaseWithOid(database_oid);
auto table = database->GetTableWithOid(table_oid);
std::vector<oid_t> key_attrs;
catalog::Schema *key_schema = nullptr;
index::IndexMetadata *index_metadata = nullptr;
auto schema = table->GetSchema();
// Find primary index attributes
int column_idx = 0;
auto &schema_columns = schema->GetColumns();
for (auto &column : schema_columns) {
if (column.IsPrimary()) {
key_attrs.push_back(column_idx);
}
column_idx++;
}
if (key_attrs.empty()) return ResultType::FAILURE;
key_schema = catalog::Schema::CopySchema(schema, key_attrs);
key_schema->SetIndexedColumns(key_attrs);
std::string index_name = table->GetName() + "_pkey";
bool unique_keys = true;
oid_t index_oid = IndexCatalog::GetInstance()->GetNextOid();
index_metadata = new index::IndexMetadata(
index_name, index_oid, table_oid, database_oid, IndexType::BWTREE,
IndexConstraintType::PRIMARY_KEY, schema, key_schema, key_attrs,
unique_keys);
std::shared_ptr<index::Index> pkey_index(
index::IndexFactory::GetIndex(index_metadata));
table->AddIndex(pkey_index);
// put index object into rw_object_set
txn->RecordCreate(database_oid, table_oid, index_oid);
// insert index record into index_catalog(pg_index) table
IndexCatalog::GetInstance()->InsertIndex(
index_oid, index_name, table_oid, IndexType::BWTREE,
IndexConstraintType::PRIMARY_KEY, unique_keys, key_attrs, pool_.get(),
txn);
LOG_TRACE("Successfully created primary key index '%s' for table '%s'",
index_name.c_str(), table->GetName().c_str());
return ResultType::SUCCESS;
}
/*@brief create index on table
* @param database_name the database which the indexed table belongs to
* @param table_name name of the table to add index on
* @param index_attr collection of the indexed attribute(column) name
* @param index_name name of the table to add index on
* @param unique_keys index supports duplicate key or not
* @param index_type the type of index(default value is BWTREE)
* @param txn TransactionContext
* @param is_catalog index is built on catalog table or not(useful in
* catalog table Initialization)
* @return TransactionContext ResultType(SUCCESS or FAILURE)
*/
ResultType Catalog::CreateIndex(const std::string &database_name,
const std::string &table_name,
const std::vector<oid_t> &key_attrs,
const std::string &index_name, bool unique_keys,
IndexType index_type,
concurrency::TransactionContext *txn) {
if (txn == nullptr)
throw CatalogException("Do not have transaction to create database " +
index_name);
LOG_TRACE("Trying to create index %s for table %s", index_name.c_str(),
table_name.c_str());
// check if database exists
auto database_object =
DatabaseCatalog::GetInstance()->GetDatabaseObject(database_name, txn);
if (database_object == nullptr)
throw CatalogException("Can't find Database " + database_name +
" to create index");
// check if table exists
auto table_object = database_object->GetTableObject(table_name);
if (table_object == nullptr)
throw CatalogException("Can't find table " + table_name +
" to create index");
IndexConstraintType index_constraint =
unique_keys ? IndexConstraintType::UNIQUE : IndexConstraintType::DEFAULT;
ResultType success = CreateIndex(
database_object->GetDatabaseOid(), table_object->GetTableOid(), key_attrs,
index_name, index_type, index_constraint, unique_keys, txn);
return success;
}
ResultType Catalog::CreateIndex(
oid_t database_oid, oid_t table_oid, const std::vector<oid_t> &key_attrs,
const std::string &index_name, IndexType index_type,
IndexConstraintType index_constraint, bool unique_keys,
concurrency::TransactionContext *txn, bool is_catalog) {
if (txn == nullptr)
throw CatalogException("Do not have transaction to create index " +
index_name);
LOG_TRACE("Trying to create index for table %d", table_oid);
if (is_catalog == false) {
// check if table already has index with same name
// only check when is_catalog flag == false
auto database_object =
DatabaseCatalog::GetInstance()->GetDatabaseObject(database_oid, txn);
auto table_object = database_object->GetTableObject(table_oid);
auto index_object = table_object->GetIndexObject(index_name);
if (index_object != nullptr)
throw CatalogException("Index " + index_name + " already exists");
}
auto storage_manager = storage::StorageManager::GetInstance();
auto database = storage_manager->GetDatabaseWithOid(database_oid);
auto table = database->GetTableWithOid(table_oid);
auto schema = table->GetSchema();
// Passed all checks, now get all index metadata
LOG_TRACE("Trying to create index %s on table %d", index_name.c_str(),
table_oid);
auto pg_index = IndexCatalog::GetInstance();
oid_t index_oid = pg_index->GetNextOid();
auto key_schema = catalog::Schema::CopySchema(schema, key_attrs);
key_schema->SetIndexedColumns(key_attrs);
// Set index metadata
auto index_metadata = new index::IndexMetadata(
index_name, index_oid, table_oid, database_oid, index_type,
index_constraint, schema, key_schema, key_attrs, unique_keys);
// Add index to table
std::shared_ptr<index::Index> key_index(
index::IndexFactory::GetIndex(index_metadata));
table->AddIndex(key_index);
// Put index object into rw_object_set
txn->RecordCreate(database_oid, table_oid, index_oid);
// Insert index record into pg_index
IndexCatalog::GetInstance()->InsertIndex(
index_oid, index_name, table_oid, index_type, index_constraint,
unique_keys, key_attrs, pool_.get(), txn);
LOG_TRACE("Successfully add index for table %s contains %d indexes",
table->GetName().c_str(), (int)table->GetValidIndexCount());
return ResultType::SUCCESS;
}
//===----------------------------------------------------------------------===//
// DROP FUNCTIONS
//===----------------------------------------------------------------------===//
ResultType Catalog::DropDatabaseWithName(const std::string &database_name,
concurrency::TransactionContext *txn) {
if (txn == nullptr)
throw CatalogException("Do not have transaction to drop database " +
database_name);
auto database_object =
DatabaseCatalog::GetInstance()->GetDatabaseObject(database_name, txn);
if (database_object == nullptr)
throw CatalogException("Drop Database: " + database_name +
" does not exist");
return DropDatabaseWithOid(database_object->GetDatabaseOid(), txn);
}
ResultType Catalog::DropDatabaseWithOid(oid_t database_oid,
concurrency::TransactionContext *txn) {
if (txn == nullptr)
throw CatalogException("Do not have transaction to drop database " +
std::to_string(database_oid));
auto storage_manager = storage::StorageManager::GetInstance();
// Drop actual tables in the database
auto database_object =
DatabaseCatalog::GetInstance()->GetDatabaseObject(database_oid, txn);
auto table_objects = database_object->GetTableObjects();
for (auto it : table_objects) {
DropTable(database_oid, it.second->GetTableOid(), txn);
}
// Drop database record in catalog
if (!DatabaseCatalog::GetInstance()->DeleteDatabase(database_oid, txn))
throw CatalogException("Database record: " + std::to_string(database_oid) +
" does not exist in pg_database");
// put database object into rw_object_set
storage_manager->GetDatabaseWithOid(database_oid);
txn->RecordDrop(database_oid, INVALID_OID, INVALID_OID);
return ResultType::SUCCESS;
}
/*@brief Drop table
* 1. drop all the indexes on actual table, and drop index records in pg_index
* 2. drop all the columns records in pg_attribute
* 3. drop table record in pg_table
* 4. delete actual table(storage level), cleanup schema, foreign keys,
* tile_groups
* @param database_name the database which the dropped table belongs to
* @param table_name the dropped table name
* @param txn TransactionContext
* @return TransactionContext ResultType(SUCCESS or FAILURE)
*/
ResultType Catalog::DropTable(const std::string &database_name,
const std::string &table_name,
concurrency::TransactionContext *txn) {
if (txn == nullptr)
throw CatalogException("Do not have transaction to drop table " +
table_name);
// Checking if statement is valid
auto database_object =
DatabaseCatalog::GetInstance()->GetDatabaseObject(database_name, txn);
if (database_object == nullptr)
throw CatalogException("Drop Table: database " + database_name +
" does not exist");
// check if table exists
auto table_object = database_object->GetTableObject(table_name);
if (table_object == nullptr)
throw CatalogException("Drop Table: table " + table_name +
" does not exist");
ResultType result = DropTable(database_object->GetDatabaseOid(),
table_object->GetTableOid(), txn);
return result;
}
/*@brief Drop table
* 1. drop all the indexes on actual table, and drop index records in pg_index
* 2. drop all the columns records in pg_attribute
* 3. drop table record in pg_table
* 4. delete actual table(storage level), cleanup schema, foreign keys,
* tile_groups
* @param database_oid the database which the dropped table belongs to
* @param table_oid the dropped table name
* @param txn TransactionContext
* @return TransactionContext ResultType(SUCCESS or FAILURE)
*/
ResultType Catalog::DropTable(oid_t database_oid, oid_t table_oid,
concurrency::TransactionContext *txn) {
LOG_TRACE("Dropping table %d from database %d", database_oid, table_oid);
auto storage_manager = storage::StorageManager::GetInstance();
auto database = storage_manager->GetDatabaseWithOid(database_oid);
auto database_object =
DatabaseCatalog::GetInstance()->GetDatabaseObject(database_oid, txn);
auto table_object = database_object->GetTableObject(table_oid);
auto index_objects = table_object->GetIndexObjects();
LOG_TRACE("dropping #%d indexes", (int)index_objects.size());
for (auto it : index_objects) DropIndex(it.second->GetIndexOid(), txn);
ColumnCatalog::GetInstance()->DeleteColumns(table_oid, txn);
TableCatalog::GetInstance()->DeleteTable(table_oid, txn);
database->GetTableWithOid(table_oid);
txn->RecordDrop(database_oid, table_oid, INVALID_OID);
return ResultType::SUCCESS;
}
/*@brief Drop Index on table
* @param index_oid the oid of the index to be dropped
* @param txn TransactionContext
* @return TransactionContext ResultType(SUCCESS or FAILURE)
*/
ResultType Catalog::DropIndex(oid_t index_oid,
concurrency::TransactionContext *txn) {
if (txn == nullptr)
throw CatalogException("Do not have transaction to drop index " +
std::to_string(index_oid));
// find index catalog object by looking up pg_index or read from cache using
// index_oid
auto index_object =
IndexCatalog::GetInstance()->GetIndexObject(index_oid, txn);
if (index_object == nullptr) {
throw CatalogException("Can't find index " + std::to_string(index_oid) +
" to drop");
}
// the tricky thing about drop index is that you only know index oid or
// index
// table_oid and you must obtain database_object-->table_object in reverse
// way
// invalidate index cache object in table_catalog
auto table_object = TableCatalog::GetInstance()->GetTableObject(
index_object->GetTableOid(), txn);
auto storage_manager = storage::StorageManager::GetInstance();
auto table = storage_manager->GetTableWithOid(table_object->GetDatabaseOid(),
index_object->GetTableOid());
// drop record in pg_index
IndexCatalog::GetInstance()->DeleteIndex(index_oid, txn);
LOG_TRACE("Successfully drop index %d for table %s", index_oid,
table->GetName().c_str());
// register index object in rw_object_set
table->GetIndexWithOid(index_oid);
txn->RecordDrop(table_object->GetDatabaseOid(), table_object->GetTableOid(),
index_oid);
return ResultType::SUCCESS;
}
ResultType Catalog::DropIndex(const std::string &index_name,
concurrency::TransactionContext *txn) {
if (txn == nullptr) {
throw CatalogException("Do not have transaction to drop index " +
index_name);
}
auto index_object =
catalog::IndexCatalog::GetInstance()->GetIndexObject(index_name, txn);
if (index_object == nullptr) {
throw CatalogException("Index name " + index_name + " cannot be found");
}
ResultType result = DropIndex(index_object->GetIndexOid(), txn);
return result;
}
//===--------------------------------------------------------------------===//
// GET WITH NAME - CHECK FROM CATALOG TABLES, USING TRANSACTION
//===--------------------------------------------------------------------===//
/* Check database from pg_database with database_name using txn,
* get it from storage layer using database_oid,
* throw exception and abort txn if not exists/invisible
* */
storage::Database *Catalog::GetDatabaseWithName(
const std::string &database_name,
concurrency::TransactionContext *txn) const {
PELOTON_ASSERT(txn != nullptr);
// Check in pg_database using txn
auto database_object =
DatabaseCatalog::GetInstance()->GetDatabaseObject(database_name, txn);
if (database_object == nullptr) {
throw CatalogException("Database " + database_name + " is not found");
}
auto storage_manager = storage::StorageManager::GetInstance();
return storage_manager->GetDatabaseWithOid(database_object->GetDatabaseOid());
}
/* Check table from pg_table with table_name using txn,
* get it from storage layer using table_oid,
* throw exception and abort txn if not exists/invisible
* */
storage::DataTable *Catalog::GetTableWithName(
const std::string &database_name, const std::string &table_name,
concurrency::TransactionContext *txn) {
PELOTON_ASSERT(txn != nullptr);
LOG_TRACE("Looking for table %s in database %s", table_name.c_str(),
database_name.c_str());
// Check in pg_database, throw exception and abort txn if not exists
auto table_object = GetTableObject(database_name, table_name, txn);
// Get table from storage manager
auto storage_manager = storage::StorageManager::GetInstance();
return storage_manager->GetTableWithOid(table_object->GetDatabaseOid(),
table_object->GetTableOid());
}
/* Check table from pg_table with table_name using txn,
* get it from storage layer using table_oid,
* throw exception and abort txn if not exists/invisible
* */
std::shared_ptr<DatabaseCatalogObject> Catalog::GetDatabaseObject(
const std::string &database_name, concurrency::TransactionContext *txn) {
if (txn == nullptr) {
throw CatalogException("Do not have transaction to get table object " +
database_name);
}
LOG_TRACE("Looking for database %s", database_name.c_str());
// Check in pg_database, throw exception and abort txn if not exists
auto database_object =
DatabaseCatalog::GetInstance()->GetDatabaseObject(database_name, txn);
if (!database_object || database_object->GetDatabaseOid() == INVALID_OID) {
throw CatalogException("Database " + database_name + " is not found");
}
return database_object;
}
std::shared_ptr<DatabaseCatalogObject> Catalog::GetDatabaseObject(
oid_t database_oid, concurrency::TransactionContext *txn) {
if (txn == nullptr) {
throw CatalogException("Do not have transaction to get database object " +
std::to_string(database_oid));
}
LOG_TRACE("Looking for database %u", database_oid);
// Check in pg_database, throw exception and abort txn if not exists
auto database_object =
DatabaseCatalog::GetInstance()->GetDatabaseObject(database_oid, txn);
if (!database_object || database_object->GetDatabaseOid() == INVALID_OID) {
throw CatalogException("Database " + std::to_string(database_oid) +
" is not found");
}
return database_object;
}
/* Get database catalog object from cache (cached_only == true),
* or all the way from storage (cached_only == false)
* throw exception and abort txn if not exists/invisible
* */
std::unordered_map<oid_t, std::shared_ptr<DatabaseCatalogObject>>
Catalog::GetDatabaseObjects(concurrency::TransactionContext *txn,
bool cached_only) {
if (txn == nullptr) {
throw CatalogException("Do not have transaction to get database objects");
}
if (!cached_only && !txn->catalog_cache.valid_database_objects) {
// cache miss get from pg_table
return DatabaseCatalog::GetInstance()->GetDatabaseObjects(txn);
}
// make sure to check IsValidTableObjects() before getting table objects
PELOTON_ASSERT(txn->catalog_cache.valid_database_objects);
return txn->catalog_cache.database_objects_cache;
}
/* Check table from pg_table with table_name using txn,
* get it from storage layer using table_oid,
* throw exception and abort txn if not exists/invisible
* */
std::shared_ptr<TableCatalogObject> Catalog::GetTableObject(
const std::string &database_name, const std::string &table_name,
concurrency::TransactionContext *txn) {
if (txn == nullptr) {
throw CatalogException("Do not have transaction to get table object " +
database_name + "." + table_name);
}
LOG_TRACE("Looking for table %s in database %s", table_name.c_str(),
database_name.c_str());
// Check in pg_database, throw exception and abort txn if not exists
auto database_object =
DatabaseCatalog::GetInstance()->GetDatabaseObject(database_name, txn);
if (!database_object || database_object->GetDatabaseOid() == INVALID_OID) {
throw CatalogException("Database " + database_name + " is not found");
}
// Check in pg_table using txn
auto table_object = database_object->GetTableObject(table_name);
if (!table_object || table_object->GetTableOid() == INVALID_OID) {
// throw table not found exception and explicitly abort txn
throw CatalogException("Table " + table_name + " is not found");
}
// if (single_statement_txn) {
// txn_manager.CommitTransaction(txn);
// }
return table_object;
}
std::shared_ptr<TableCatalogObject> Catalog::GetTableObject(
oid_t database_oid, oid_t table_oid, concurrency::TransactionContext *txn) {
if (txn == nullptr) {
throw CatalogException("Do not have transaction to get table object " +
std::to_string(database_oid) + "." +
std::to_string(table_oid));
}
LOG_TRACE("Looking for table %u in database %u", table_oid, database_oid);
// Check in pg_database, throw exception and abort txn if not exists
auto database_object =
DatabaseCatalog::GetInstance()->GetDatabaseObject(database_oid, txn);
if (!database_object || database_object->GetDatabaseOid() == INVALID_OID) {
throw CatalogException("Database " + std::to_string(database_oid) +
" is not found");
}
// Check in pg_table using txn
auto table_object = database_object->GetTableObject(table_oid);
if (!table_object || table_object->GetTableOid() == INVALID_OID) {
// throw table not found exception and explicitly abort txn
throw CatalogException("Table " + std::to_string(table_oid) +
" is not found");
}
return table_object;
}
//===--------------------------------------------------------------------===//
// CHECK EXISTENCE WITH NAME - CHECK FROM CATALOG TABLES, USING TRANSACTION
//===--------------------------------------------------------------------===//
// check existence of database with database_name using txn.
bool Catalog::ExistDatabaseByName(const std::string &database_name,
concurrency::TransactionContext *txn) {
if (txn == nullptr)
throw CatalogException("Do not have transaction to check database " +
database_name);
auto database_object =
DatabaseCatalog::GetInstance()->GetDatabaseObject(database_name, txn);
if (database_object == nullptr) {
return false;
} else {
return true;
}
}
// check existence of table with table_name using txn.
bool Catalog::ExistTableByName(const std::string &database_name,
const std::string &table_name,
concurrency::TransactionContext *txn) {
if (txn == nullptr)
throw CatalogException("Do not have transaction to check table " +
table_name);
auto database_object =
DatabaseCatalog::GetInstance()->GetDatabaseObject(database_name, txn);
if (database_object == nullptr) {
return false;
} else {
auto table_object = database_object->GetTableObject(table_name);
if (table_object == nullptr) {
return false;
} else {
return true;
}
}
}
// check existence of index with index_name using txn.
bool Catalog::ExistIndexByName(const std::string &database_name,
const std::string &table_name,
const std::string &index_name,
concurrency::TransactionContext *txn) {
if (txn == nullptr)
throw CatalogException("Do not have transaction to check index " +
index_name);
auto database_object =
DatabaseCatalog::GetInstance()->GetDatabaseObject(database_name, txn);
if (database_object == nullptr) {
return false;
} else {
auto table_object = database_object->GetTableObject(table_name);
if (table_object == nullptr) {
return false;
} else {
auto index_object = table_object->GetIndexObject(index_name);
if (index_object == nullptr) {
return false;
} else {
return true;
}
}
}
}
//===--------------------------------------------------------------------===//
// DEPRECATED
//===--------------------------------------------------------------------===//
// This should be deprecated! this can screw up the database oid system
void Catalog::AddDatabase(storage::Database *database) {
std::lock_guard<std::mutex> lock(catalog_mutex);
auto storage_manager = storage::StorageManager::GetInstance();
storage_manager->AddDatabaseToStorageManager(database);
auto &txn_manager = concurrency::TransactionManagerFactory::GetInstance();
auto txn = txn_manager.BeginTransaction();
DatabaseCatalog::GetInstance()->InsertDatabase(
database->GetOid(), database->GetDBName(), pool_.get(),
txn); // I guess this can pass tests
txn_manager.CommitTransaction(txn);
}
//===--------------------------------------------------------------------===//
// HELPERS
//===--------------------------------------------------------------------===//
Catalog::~Catalog() {
storage::StorageManager::GetInstance()->DestroyDatabases();
}
//===--------------------------------------------------------------------===//
// FUNCTION
//===--------------------------------------------------------------------===//
/* @brief
* Add a new built-in function. This proceeds in two steps:
* 1. Add the function information into pg_catalog.pg_proc
* 2. Register the function pointer in function::BuiltinFunction
* @param name & argument_types function name and arg types used in SQL
* @param return_type the return type
* @param prolang the oid of which language the function is
* @param func_name the function name in C++ source (should be unique)
* @param func_ptr the pointer to the function
*/
void Catalog::AddBuiltinFunction(
const std::string &name, const std::vector<type::TypeId> &argument_types,
const type::TypeId return_type, oid_t prolang, const std::string &func_name,
function::BuiltInFuncType func, concurrency::TransactionContext *txn) {
if (!ProcCatalog::GetInstance().InsertProc(name, return_type, argument_types,
prolang, func_name, pool_.get(),
txn)) {
throw CatalogException("Failed to add function " + func_name);
}
function::BuiltInFunctions::AddFunction(func_name, func);
}
/* @brief
* Add a new plpgsql function. This proceeds in two steps:
* 1. Add the function information into pg_catalog.pg_proc
* 2. Register the function code_context in function::PlgsqlFunction
* @param name & argument_types function name and arg types used in SQL
* @param return_type the return type
* @param prolang the oid of which language the function is
* @param func_src the plpgsql UDF function body
* @details func_src can be used to reconstruct the llvm code_context in case
* of failures
* @param code_context the code_context that holds the generated LLVM
* query code
*/
void Catalog::AddPlpgsqlFunction(
const std::string &name, const std::vector<type::TypeId> &argument_types,
const type::TypeId return_type, oid_t prolang, const std::string &func_src,
std::shared_ptr<peloton::codegen::CodeContext> code_context,
concurrency::TransactionContext *txn) {
// Check if UDF already exists
auto proc_catalog_obj =
ProcCatalog::GetInstance().GetProcByName(name, argument_types, txn);
if (proc_catalog_obj == nullptr) {
if (!ProcCatalog::GetInstance().InsertProc(name, return_type,
argument_types, prolang,
func_src, pool_.get(), txn)) {
throw CatalogException("Failed to add function " + name);
}
proc_catalog_obj =
ProcCatalog::GetInstance().GetProcByName(name, argument_types, txn);
// Insert UDF into Catalog
function::PlpgsqlFunctions::AddFunction(proc_catalog_obj->GetOid(),
code_context);
}
}
const FunctionData Catalog::GetFunction(
const std::string &name, const std::vector<type::TypeId> &argument_types) {
auto &txn_manager = concurrency::TransactionManagerFactory::GetInstance();
auto txn = txn_manager.BeginTransaction();
// Lookup the function in pg_proc
auto &proc_catalog = ProcCatalog::GetInstance();
auto proc_catalog_obj = proc_catalog.GetProcByName(name, argument_types, txn);
if (proc_catalog_obj == nullptr) {
txn_manager.AbortTransaction(txn);
throw CatalogException("Failed to find function " + name);
}
// If the language isn't 'internal' or 'plpgsql', crap out ... for now ...
auto lang_catalog_obj = proc_catalog_obj->GetLanguage();
if (lang_catalog_obj == nullptr ||
(lang_catalog_obj->GetName() != "internal" &&
lang_catalog_obj->GetName() != "plpgsql")) {
txn_manager.AbortTransaction(txn);
throw CatalogException(
"Peloton currently only supports internal functions and plpgsql UDFs. \
Function " +
name + " has language '" + lang_catalog_obj->GetName() + "'");
}
FunctionData result;
result.argument_types_ = argument_types;
result.func_name_ = proc_catalog_obj->GetSrc();
result.return_type_ = proc_catalog_obj->GetRetType();
if (lang_catalog_obj->GetName() == "internal") {
// If the function is "internal", perform the lookup in our built-in
// functions map (i.e., function::BuiltInFunctions) to get the function
result.func_ = function::BuiltInFunctions::GetFuncByName(result.func_name_);