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#if 0
#include "MongoDBDictionarySource.h"
#include "DictionarySourceFactory.h"
#include "DictionaryStructure.h"
#include "registerDictionaries.h"
#include <Storages/ExternalDataSourceConfiguration.h>
#include <Storages/StorageMongoDBSocketFactory.h>
namespace DB
{
static const std::unordered_set<std::string_view> dictionary_allowed_keys = {
"host", "port", "user", "password", "db", "database", "uri", "collection", "name", "method", "options"};
void registerDictionarySourceMongoDB(DictionarySourceFactory & factory)
{
auto create_mongo_db_dictionary = [](
const DictionaryStructure & dict_struct,
const Poco::Util::AbstractConfiguration & config,
const std::string & root_config_prefix,
Block & sample_block,
ContextPtr context,
const std::string & /* default_database */,
bool created_from_ddl)
{
const auto config_prefix = root_config_prefix + ".mongodb";
ExternalDataSourceConfiguration configuration;
auto has_config_key = [](const String & key) { return dictionary_allowed_keys.contains(key); };
auto named_collection = getExternalDataSourceConfiguration(config, config_prefix, context, has_config_key);
if (named_collection)
{
configuration = named_collection->configuration;
}
else
{
configuration.host = config.getString(config_prefix + ".host", "");
configuration.port = config.getUInt(config_prefix + ".port", 0);
configuration.username = config.getString(config_prefix + ".user", "");
configuration.password = config.getString(config_prefix + ".password", "");
configuration.database = config.getString(config_prefix + ".db", "");
}
if (created_from_ddl)
context->getRemoteHostFilter().checkHostAndPort(configuration.host, toString(configuration.port));
return std::make_unique<MongoDBDictionarySource>(dict_struct,
config.getString(config_prefix + ".uri", ""),
configuration.host,
configuration.port,
configuration.username,
configuration.password,
config.getString(config_prefix + ".method", ""),
configuration.database,
config.getString(config_prefix + ".collection"),
config.getString(config_prefix + ".options", ""),
sample_block);
};
factory.registerSource("mongodb", create_mongo_db_dictionary);
}
}
#include <Common/logger_useful.h>
#include <Poco/MongoDB/Array.h>
#include <Poco/MongoDB/Connection.h>
#include <Poco/MongoDB/Cursor.h>
#include <Poco/MongoDB/Database.h>
#include <Poco/MongoDB/ObjectId.h>
#include <Poco/URI.h>
#include <Poco/Util/AbstractConfiguration.h>
// only after poco
// naming conflict:
// Poco/MongoDB/BSONWriter.h:54: void writeCString(const std::string & value);
// src/IO/WriteHelpers.h:146 #define writeCString(s, buf)
#include <IO/WriteHelpers.h>
namespace DB
{
namespace ErrorCodes
{
extern const int NOT_IMPLEMENTED;
extern const int UNSUPPORTED_METHOD;
extern const int MONGODB_CANNOT_AUTHENTICATE;
}
static const UInt64 max_block_size = 8192;
MongoDBDictionarySource::MongoDBDictionarySource(
const DictionaryStructure & dict_struct_,
const std::string & uri_,
const std::string & host_,
UInt16 port_,
const std::string & user_,
const std::string & password_,
const std::string & method_,
const std::string & db_,
const std::string & collection_,
const std::string & options_,
const Block & sample_block_)
: dict_struct{dict_struct_}
, uri{uri_}
, host{host_}
, port{port_}
, user{user_}
, password{password_}
, method{method_}
, db{db_}
, collection{collection_}
, options(options_)
, sample_block{sample_block_}
, connection{std::make_shared<Poco::MongoDB::Connection>()}
{
StorageMongoDBSocketFactory socket_factory;
if (!uri.empty())
{
// Connect with URI.
connection->connect(uri, socket_factory);
Poco::URI poco_uri(connection->uri());
// Parse database from URI. This is required for correctness -- the
// cursor is created using database name and collection name, so we have
// to specify them properly.
db = poco_uri.getPath();
// getPath() may return a leading slash, remove it.
if (!db.empty() && db[0] == '/')
{
db.erase(0, 1);
}
// Parse some other parts from URI, for logging and display purposes.
host = poco_uri.getHost();
port = poco_uri.getPort();
user = poco_uri.getUserInfo();
if (size_t separator = user.find(':'); separator != std::string::npos)
{
user.resize(separator);
}
}
else
{
// Connect with host/port/user/etc through constructing the uri
std::string uri_constructed("mongodb://" + host + ":" + std::to_string(port) + "/" + db + (options.empty() ? "" : "?" + options));
connection->connect(uri_constructed, socket_factory);
if (!user.empty())
{
Poco::MongoDB::Database poco_db(db);
if (!poco_db.authenticate(*connection, user, password, method.empty() ? Poco::MongoDB::Database::AUTH_SCRAM_SHA1 : method))
throw Exception(ErrorCodes::MONGODB_CANNOT_AUTHENTICATE, "Cannot authenticate in MongoDB, incorrect user or password");
}
}
}
MongoDBDictionarySource::MongoDBDictionarySource(const MongoDBDictionarySource & other)
: MongoDBDictionarySource{
other.dict_struct, other.uri, other.host, other.port, other.user, other.password, other.method, other.db,
other.collection, other.options, other.sample_block
}
{
}
MongoDBDictionarySource::~MongoDBDictionarySource() = default;
QueryPipeline MongoDBDictionarySource::loadAll()
{
return QueryPipeline(std::make_shared<MongoDBSource>(connection, db, collection, Poco::MongoDB::Document{}, sample_block, max_block_size));
}
QueryPipeline MongoDBDictionarySource::loadIds(const std::vector<UInt64> & ids)
{
if (!dict_struct.id)
throw Exception(ErrorCodes::UNSUPPORTED_METHOD, "'id' is required for selective loading");
Poco::MongoDB::Document query;
/** NOTE: While building array, Poco::MongoDB requires passing of different unused element names, along with values.
* In general, Poco::MongoDB is quite inefficient and bulky.
*/
Poco::MongoDB::Array::Ptr ids_array(new Poco::MongoDB::Array);
for (const UInt64 id : ids)
ids_array->add(DB::toString(id), static_cast<Int32>(id));
query.addNewDocument(dict_struct.id->name).add("$in", ids_array);
return QueryPipeline(std::make_shared<MongoDBSource>(connection, db, collection, query, sample_block, max_block_size));
}
QueryPipeline MongoDBDictionarySource::loadKeys(const Columns & key_columns, const std::vector<size_t> & requested_rows)
{
if (!dict_struct.key)
throw Exception(ErrorCodes::UNSUPPORTED_METHOD, "'key' is required for selective loading");
Poco::MongoDB::Document query;
Poco::MongoDB::Array::Ptr keys_array(new Poco::MongoDB::Array);
for (const auto row_idx : requested_rows)
{
auto & key = keys_array->addNewDocument(DB::toString(row_idx));
const auto & key_attributes = *dict_struct.key;
for (size_t attribute_index = 0; attribute_index < key_attributes.size(); ++attribute_index)
{
const auto & key_attribute = key_attributes[attribute_index];
switch (key_attribute.underlying_type)
{
case AttributeUnderlyingType::UInt8:
case AttributeUnderlyingType::UInt16:
case AttributeUnderlyingType::UInt32:
case AttributeUnderlyingType::UInt64:
case AttributeUnderlyingType::Int8:
case AttributeUnderlyingType::Int16:
case AttributeUnderlyingType::Int32:
case AttributeUnderlyingType::Int64:
{
key.add(key_attribute.name, static_cast<Int32>(key_columns[attribute_index]->get64(row_idx)));
break;
}
case AttributeUnderlyingType::Float32:
case AttributeUnderlyingType::Float64:
{
key.add(key_attribute.name, key_columns[attribute_index]->getFloat64(row_idx));
break;
}
case AttributeUnderlyingType::String:
{
String loaded_str((*key_columns[attribute_index])[row_idx].get<String>());
/// Convert string to ObjectID
if (key_attribute.is_object_id)
{
Poco::MongoDB::ObjectId::Ptr loaded_id(new Poco::MongoDB::ObjectId(loaded_str));
key.add(key_attribute.name, loaded_id);
}
else
{
key.add(key_attribute.name, loaded_str);
}
break;
}
default:
throw Exception(ErrorCodes::NOT_IMPLEMENTED, "Unsupported dictionary attribute type for MongoDB dictionary source");
}
}
}
/// If more than one key we should use $or
query.add("$or", keys_array);
return QueryPipeline(std::make_shared<MongoDBSource>(connection, db, collection, query, sample_block, max_block_size));
}
std::string MongoDBDictionarySource::toString() const
{
return fmt::format("MongoDB: {}.{},{}{}:{}", db, collection, (user.empty() ? " " : " " + user + '@'), host, port);
}
}
#endif
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