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#include <Columns/ColumnString.h>
#include <Columns/ColumnVector.h>
#include <Columns/ColumnsNumber.h>
#include <Columns/IColumn.h>
#include <Core/ExternalResultDescription.h>
#include <Core/Field.h>
#include <Core/Types.h>
#include <DataTypes/DataTypeArray.h>
#include <DataTypes/DataTypeDateTime.h>
#include <DataTypes/DataTypeNullable.h>
#include <DataTypes/Serializations/ISerialization.h>
#include <IO/Operators.h>
#include <IO/ReadBufferFromString.h>
#include <IO/ReadHelpers.h>
#include <IO/WriteBufferFromString.h>
#include <IO/WriteHelpers.h>
#include <Storages/MeiliSearch/SourceMeiliSearch.h>
#include <base/JSON.h>
#include <base/range.h>
#include <base/types.h>
#include <magic_enum.hpp>
#include <Common/Exception.h>
#include <Common/quoteString.h>
#include "Interpreters/ProcessList.h"
namespace DB
{
namespace ErrorCodes
{
extern const int MEILISEARCH_EXCEPTION;
extern const int UNSUPPORTED_MEILISEARCH_TYPE;
extern const int MEILISEARCH_MISSING_SOME_COLUMNS;
}
String MeiliSearchSource::doubleQuoteIfNeed(const String & param) const
{
if (route == QueryRoute::search)
return doubleQuoteString(param);
return param;
}
String MeiliSearchSource::constructAttributesToRetrieve() const
{
WriteBufferFromOwnString columns_to_get;
if (route == QueryRoute::search)
columns_to_get << "[";
auto it = description.sample_block.begin();
while (it != description.sample_block.end())
{
columns_to_get << doubleQuoteIfNeed(it->name);
++it;
if (it != description.sample_block.end())
columns_to_get << ",";
}
if (route == QueryRoute::search)
columns_to_get << "]";
return columns_to_get.str();
}
MeiliSearchSource::MeiliSearchSource(
const MeiliSearchConfiguration & config,
const Block & sample_block,
UInt64 max_block_size_,
QueryRoute route_,
std::unordered_map<String, String> query_params_)
: ISource(sample_block.cloneEmpty())
, connection(config)
, max_block_size{max_block_size_}
, route{route_}
, query_params{query_params_}
, offset{0}
{
description.init(sample_block);
auto attributes_to_retrieve = constructAttributesToRetrieve();
query_params[doubleQuoteIfNeed("attributesToRetrieve")] = attributes_to_retrieve;
query_params[doubleQuoteIfNeed("limit")] = std::to_string(max_block_size);
}
MeiliSearchSource::~MeiliSearchSource() = default;
Field getField(JSON value, DataTypePtr type_ptr)
{
TypeIndex type_id = type_ptr->getTypeId();
if (type_id == TypeIndex::UInt64 || type_id == TypeIndex::UInt32 || type_id == TypeIndex::UInt16 || type_id == TypeIndex::UInt8)
{
if (value.isBool())
return value.getBool();
else
return value.get<UInt64>();
}
else if (type_id == TypeIndex::Int64 || type_id == TypeIndex::Int32 || type_id == TypeIndex::Int16 || type_id == TypeIndex::Int8)
{
return value.get<Int64>();
}
else if (type_id == TypeIndex::String)
{
if (value.isObject())
return value.toString();
else
return value.get<String>();
}
else if (type_id == TypeIndex::Float64 || type_id == TypeIndex::Float32)
{
return value.get<Float64>();
}
else if (type_id == TypeIndex::Date)
{
return UInt16{LocalDate{String(value.toString())}.getDayNum()};
}
else if (type_id == TypeIndex::Date32)
{
return Int32{LocalDate{String(value.toString())}.getExtenedDayNum()};
}
else if (type_id == TypeIndex::DateTime)
{
ReadBufferFromString in(value.toString());
time_t time = 0;
readDateTimeText(time, in, assert_cast<const DataTypeDateTime *>(type_ptr.get())->getTimeZone());
if (time < 0)
time = 0;
return time;
}
else if (type_id == TypeIndex::Nullable)
{
if (value.isNull())
return Null();
const auto * null_type = typeid_cast<const DataTypeNullable *>(type_ptr.get());
DataTypePtr nested = null_type->getNestedType();
return getField(value, nested);
}
else if (type_id == TypeIndex::Array)
{
const auto * array_type = typeid_cast<const DataTypeArray *>(type_ptr.get());
DataTypePtr nested = array_type->getNestedType();
Array array;
for (const auto el : value)
array.push_back(getField(el, nested));
return array;
}
else
{
const std::string_view type_name = magic_enum::enum_name(type_id);
throw Exception(ErrorCodes::UNSUPPORTED_MEILISEARCH_TYPE, "MeiliSearch storage doesn't support type: {}", type_name);
}
}
void insertWithTypeId(MutableColumnPtr & column, JSON value, DataTypePtr type_ptr)
{
column->insert(getField(value, type_ptr));
}
size_t MeiliSearchSource::parseJSON(MutableColumns & columns, const JSON & jres) const
{
size_t cnt_match = 0;
for (const auto json : jres)
{
++cnt_match;
size_t cnt_fields = 0;
for (const auto kv_pair : json)
{
++cnt_fields;
const auto & name = kv_pair.getName();
size_t pos = description.sample_block.getPositionByName(name);
MutableColumnPtr & col = columns[pos];
DataTypePtr type_ptr = description.sample_block.getByPosition(pos).type;
insertWithTypeId(col, kv_pair.getValue(), type_ptr);
}
if (cnt_fields != columns.size())
throw Exception(
ErrorCodes::MEILISEARCH_MISSING_SOME_COLUMNS, "Some columns were not found in the table, json = {}", json.toString());
}
return cnt_match;
}
Chunk MeiliSearchSource::generate()
{
if (all_read)
return {};
MutableColumns columns = description.sample_block.cloneEmptyColumns();
query_params[doubleQuoteIfNeed("offset")] = std::to_string(offset);
size_t cnt_match = 0;
if (route == QueryRoute::search)
{
auto response = connection.searchQuery(query_params);
JSON jres = JSON(response).begin();
if (jres.getName() == "message")
throw Exception::createRuntime(ErrorCodes::MEILISEARCH_EXCEPTION, jres.toString());
cnt_match = parseJSON(columns, jres.getValue());
}
else
{
auto response = connection.getDocumentsQuery(query_params);
JSON jres(response);
if (!jres.isArray())
{
auto error = jres.getWithDefault<String>("message");
throw Exception::createRuntime(ErrorCodes::MEILISEARCH_EXCEPTION, error);
}
cnt_match = parseJSON(columns, jres);
}
offset += cnt_match;
if (cnt_match == 0)
{
all_read = true;
return {};
}
return Chunk(std::move(columns), cnt_match);
}
}
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