// Licensed to the Apache Software Foundation (ASF) under one

// or more contributor license agreements.  See the NOTICE file

// distributed with this work for additional information

// regarding copyright ownership.  The ASF licenses this file

// to you 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 "information_schema/schema_files_scanner.h"

#include <gen_cpp/Descriptors_types.h>

#include <gen_cpp/FrontendService_types.h>

#include <stdint.h>

#include "core/data_type/define_primitive_type.h"

#include "core/string_ref.h"

#include "information_schema/schema_helper.h"

#include "runtime/runtime_profile.h"

namespace doris {

class RuntimeState;

class Block;

std::vector<SchemaScanner::ColumnDesc> SchemaFilesScanner::_s_tbls_columns = {

        //   name,       type,          size,     is_null

        {"FILE_ID", TYPE_BIGINT, sizeof(int64_t), true},

        {"FILE_NAME", TYPE_STRING, sizeof(StringRef), true},

        {"FILE_TYPE", TYPE_VARCHAR, sizeof(StringRef), true},

        {"TABLESPACE_NAME", TYPE_VARCHAR, sizeof(StringRef), false},

        {"TABLE_CATALOG", TYPE_CHAR, sizeof(StringRef), false},

        {"TABLE_SCHEMA", TYPE_STRING, sizeof(StringRef), true},

        {"TABLE_NAME", TYPE_STRING, sizeof(StringRef), true},

        {"LOGFILE_GROUP_NAME", TYPE_VARCHAR, sizeof(StringRef), true},

        {"LOGFILE_GROUP_NUMBER", TYPE_BIGINT, sizeof(int64_t), true},

        {"ENGINE", TYPE_VARCHAR, sizeof(StringRef), false},

        {"FULLTEXT_KEYS", TYPE_STRING, sizeof(StringRef), true},

        {"DELETED_ROWS", TYPE_STRING, sizeof(StringRef), true},

        {"UPDATE_COUNT", TYPE_STRING, sizeof(StringRef), true},

        {"FREE_EXTENTS", TYPE_BIGINT, sizeof(int64_t), true},

        {"TOTAL_EXTENTS", TYPE_BIGINT, sizeof(int64_t), true},

        {"EXTENT_SIZE", TYPE_BIGINT, sizeof(int64_t), true},

        {"INITIAL_SIZE", TYPE_BIGINT, sizeof(int64_t), true},

        {"MAXIMUM_SIZE", TYPE_BIGINT, sizeof(int64_t), true},

        {"AUTOEXTEND_SIZE", TYPE_BIGINT, sizeof(int64_t), true},

        {"CREATION_TIME", TYPE_STRING, sizeof(StringRef), true},

        {"LAST_UPDATE_TIME", TYPE_STRING, sizeof(StringRef), true},

        {"LAST_ACCESS_TIME", TYPE_STRING, sizeof(StringRef), true},

        {"RECOVER_TIME", TYPE_STRING, sizeof(StringRef), true},

        {"TRANSACTION_COUNTER", TYPE_STRING, sizeof(StringRef), true},

        {"VERSION", TYPE_BIGINT, sizeof(int64_t), true},

        {"ROW_FORMAT", TYPE_VARCHAR, sizeof(StringRef), true},

        {"TABLE_ROWS", TYPE_STRING, sizeof(StringRef), true},

        {"AVG_ROW_LENGTH", TYPE_STRING, sizeof(StringRef), true},

        {"DATA_LENGTH", TYPE_STRING, sizeof(StringRef), true},

        {"MAX_DATA_LENGTH", TYPE_STRING, sizeof(StringRef), true},

        {"INDEX_LENGTH", TYPE_STRING, sizeof(StringRef), true},

        {"DATA_FREE", TYPE_BIGINT, sizeof(int64_t), true},

        {"CREATE_TIME", TYPE_STRING, sizeof(StringRef), true},

        {"UPDATE_TIME", TYPE_STRING, sizeof(StringRef), true},

        {"CHECK_TIME", TYPE_STRING, sizeof(StringRef), true},

        {"CHECKSUM", TYPE_STRING, sizeof(StringRef), true},

        {"STATUS", TYPE_VARCHAR, sizeof(StringRef), true},

        {"EXTRA", TYPE_VARCHAR, sizeof(StringRef), true},

};

SchemaFilesScanner::SchemaFilesScanner()

        : SchemaScanner(_s_tbls_columns, TSchemaTableType::SCH_FILES),

          _db_index(0),

          _table_index(0) {}

SchemaFilesScanner::~SchemaFilesScanner() {}

Status SchemaFilesScanner::start(RuntimeState* state) {

    if (!_is_init) {

        return Status::InternalError("used before initialized.");

    }

    SCOPED_TIMER(_get_db_timer);

    TGetDbsParams db_params;

    if (nullptr != _param->common_param->db) {

        db_params.__set_pattern(*(_param->common_param->db));

    }

    if (nullptr != _param->common_param->catalog) {

        db_params.__set_catalog(*(_param->common_param->catalog));

    }

    if (nullptr != _param->common_param->current_user_ident) {

        db_params.__set_current_user_ident(*(_param->common_param->current_user_ident));

    } else {

        if (nullptr != _param->common_param->user) {

            db_params.__set_user(*(_param->common_param->user));

        }

        if (nullptr != _param->common_param->user_ip) {

            db_params.__set_user_ip(*(_param->common_param->user_ip));

        }

    }

    if (nullptr != _param->common_param->ip && 0 != _param->common_param->port) {

        RETURN_IF_ERROR(SchemaHelper::get_db_names(

                *(_param->common_param->ip), _param->common_param->port, db_params, &_db_result));

    } else {

        return Status::InternalError("IP or port doesn't exists");

    }

    return Status::OK();

}

Status SchemaFilesScanner::get_next_block_internal(Block* block, bool* eos) {

    if (!_is_init) {

        return Status::InternalError("Used before initialized.");

    }

    if (nullptr == block || nullptr == eos) {

        return Status::InternalError("input pointer is nullptr.");

    }

    *eos = true;

    return Status::OK();

}

} // namespace doris