// 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 "olap/rowset_builder.h"

#include <brpc/controller.h>

#include <fmt/format.h>

#include <filesystem>

#include <memory>

#include <ostream>

#include <string>

#include <utility>

// IWYU pragma: no_include <opentelemetry/common/threadlocal.h>

#include "common/compiler_util.h" // IWYU pragma: keep

#include "common/config.h"

#include "common/status.h"

#include "exec/tablet_info.h"

#include "gutil/strings/numbers.h"

#include "io/fs/file_system.h"

#include "io/fs/file_writer.h" // IWYU pragma: keep

#include "olap/calc_delete_bitmap_executor.h"

#include "olap/olap_define.h"

#include "olap/partial_update_info.h"

#include "olap/rowset/beta_rowset.h"

#include "olap/rowset/beta_rowset_writer.h"

#include "olap/rowset/pending_rowset_helper.h"

#include "olap/rowset/rowset_meta.h"

#include "olap/rowset/rowset_meta_manager.h"

#include "olap/rowset/rowset_writer.h"

#include "olap/rowset/rowset_writer_context.h"

#include "olap/schema_change.h"

#include "olap/storage_engine.h"

#include "olap/tablet_manager.h"

#include "olap/tablet_meta.h"

#include "olap/tablet_schema.h"

#include "olap/txn_manager.h"

#include "runtime/memory/global_memory_arbitrator.h"

#include "util/brpc_client_cache.h"

#include "util/debug_points.h"

#include "util/mem_info.h"

#include "util/ref_count_closure.h"

#include "util/stopwatch.hpp"

#include "util/time.h"

#include "util/trace.h"

#include "vec/common/schema_util.h"

#include "vec/core/block.h"

namespace doris {

using namespace ErrorCode;

BaseRowsetBuilder::BaseRowsetBuilder(const WriteRequest& req, RuntimeProfile* profile)

        : _req(req), _tablet_schema(std::make_shared<TabletSchema>()) {

    _init_profile(profile);

}

RowsetBuilder::RowsetBuilder(StorageEngine& engine, const WriteRequest& req,

                             RuntimeProfile* profile)

        : BaseRowsetBuilder(req, profile), _engine(engine) {}

void BaseRowsetBuilder::_init_profile(RuntimeProfile* profile) {

    _profile = profile->create_child(fmt::format("RowsetBuilder {}", _req.tablet_id), true, true);

    _build_rowset_timer = ADD_TIMER(_profile, "BuildRowsetTime");

    _submit_delete_bitmap_timer = ADD_TIMER(_profile, "DeleteBitmapSubmitTime");

    _wait_delete_bitmap_timer = ADD_TIMER(_profile, "DeleteBitmapWaitTime");

}

void RowsetBuilder::_init_profile(RuntimeProfile* profile) {

    BaseRowsetBuilder::_init_profile(profile);

    _commit_txn_timer = ADD_TIMER(_profile, "CommitTxnTime");

}

BaseRowsetBuilder::~BaseRowsetBuilder() {

    if (!_is_init) {

        return;

    }

    if (_calc_delete_bitmap_token != nullptr) {

        _calc_delete_bitmap_token->cancel();

    }

}

RowsetBuilder::~RowsetBuilder() {

    if (_is_init && !_is_committed) {

        _garbage_collection();

    }

}

Tablet* RowsetBuilder::tablet() {

    return static_cast<Tablet*>(_tablet.get());

}

TabletSharedPtr RowsetBuilder::tablet_sptr() {

    return std::static_pointer_cast<Tablet>(_tablet);

}

void RowsetBuilder::_garbage_collection() {

    Status rollback_status;

    TxnManager* txn_mgr = _engine.txn_manager();

    if (tablet() != nullptr) {

        rollback_status = txn_mgr->rollback_txn(_req.partition_id, *tablet(), _req.txn_id);

    }

    // has to check rollback status, because the rowset maybe committed in this thread and

    // published in another thread, then rollback will fail.

    // when rollback failed should not delete rowset

    if (rollback_status.ok()) {

        _engine.add_unused_rowset(_rowset);

    }

}

Status BaseRowsetBuilder::init_mow_context(std::shared_ptr<MowContext>& mow_context) {

    std::lock_guard<std::shared_mutex> lck(tablet()->get_header_lock());

    _max_version_in_flush_phase = tablet()->max_version_unlocked();

    std::vector<RowsetSharedPtr> rowset_ptrs;

    // tablet is under alter process. The delete bitmap will be calculated after conversion.

    if (tablet()->tablet_state() == TABLET_NOTREADY) {

        // Disable 'partial_update' when the tablet is undergoing a 'schema changing process'

        if (_req.table_schema_param->is_partial_update()) {

            return Status::InternalError(

                    "Unable to do 'partial_update' when "

                    "the tablet is undergoing a 'schema changing process'");

        }

        _rowset_ids.clear();

    } else {

        RETURN_IF_ERROR(

                tablet()->get_all_rs_id_unlocked(_max_version_in_flush_phase, &_rowset_ids));

        rowset_ptrs = tablet()->get_rowset_by_ids(&_rowset_ids);

    }

    _delete_bitmap = std::make_shared<DeleteBitmap>(tablet()->tablet_id());

    mow_context = std::make_shared<MowContext>(_max_version_in_flush_phase, _req.txn_id,

                                               _rowset_ids, rowset_ptrs, _delete_bitmap);

    return Status::OK();

}

Status RowsetBuilder::check_tablet_version_count() {

    if (!_tablet->exceed_version_limit(config::max_tablet_version_num - 100) ||

        GlobalMemoryArbitrator::is_exceed_soft_mem_limit(GB_EXCHANGE_BYTE)) {

        return Status::OK();

    }

    //trigger compaction

    auto st = _engine.submit_compaction_task(tablet_sptr(), CompactionType::CUMULATIVE_COMPACTION,

                                             true);

    if (!st.ok()) [[unlikely]] {

        LOG(WARNING) << "failed to trigger compaction, tablet_id=" << _tablet->tablet_id() << " : "

                     << st;

    }

    int version_count = tablet()->version_count();

    DBUG_EXECUTE_IF("RowsetBuilder.check_tablet_version_count.too_many_version",

                    { version_count = INT_MAX; });

    if (version_count > config::max_tablet_version_num) {

        return Status::Error<TOO_MANY_VERSION>(

                "failed to init rowset builder. version count: {}, exceed limit: {}, "

                "tablet: {}. Please reduce the frequency of loading data or adjust the "

                "max_tablet_version_num in be.conf to a larger value.",

                version_count, config::max_tablet_version_num, _tablet->tablet_id());

    }

    return Status::OK();

}

Status RowsetBuilder::prepare_txn() {

    std::shared_lock base_migration_lock(tablet()->get_migration_lock(), std::defer_lock);

    if (!base_migration_lock.try_lock_for(

                std::chrono::milliseconds(config::migration_lock_timeout_ms))) {

        return Status::Error<TRY_LOCK_FAILED>("try_lock migration lock failed after {}ms",

                                              config::migration_lock_timeout_ms);

    }

    std::lock_guard<std::mutex> push_lock(tablet()->get_push_lock());

    return _engine.txn_manager()->prepare_txn(_req.partition_id, *tablet(), _req.txn_id,

                                              _req.load_id);

}

Status RowsetBuilder::init() {

    _tablet = DORIS_TRY(_engine.get_tablet(_req.tablet_id));

    std::shared_ptr<MowContext> mow_context;

    if (_tablet->enable_unique_key_merge_on_write()) {

        RETURN_IF_ERROR(init_mow_context(mow_context));

    }

    if (!config::disable_auto_compaction &&

        !_tablet->tablet_meta()->tablet_schema()->disable_auto_compaction()) {

        RETURN_IF_ERROR(check_tablet_version_count());

    }

    int version_count = tablet()->version_count() + tablet()->stale_version_count();

    if (tablet()->avg_rs_meta_serialize_size() * version_count >

        config::tablet_meta_serialize_size_limit) {

        return Status::Error<TOO_MANY_VERSION>(

                "failed to init rowset builder. meta serialize size : {}, exceed limit: {}, "

                "tablet: {}. Please reduce the frequency of loading data or adjust the "

                "max_tablet_version_num in be.conf to a larger value.",

                tablet()->avg_rs_meta_serialize_size() * version_count,

                config::tablet_meta_serialize_size_limit, _tablet->tablet_id());

    }

    RETURN_IF_ERROR(prepare_txn());

    DBUG_EXECUTE_IF("BaseRowsetBuilder::init.check_partial_update_column_num", {

        if (_req.table_schema_param->partial_update_input_columns().size() !=

            dp->param<int>("column_num")) {

            return Status::InternalError("partial update input column num wrong!");

        };

    })

    // build tablet schema in request level

    _build_current_tablet_schema(_req.index_id, _req.table_schema_param.get(),

                                 *_tablet->tablet_schema());

    RowsetWriterContext context;

    context.txn_id = _req.txn_id;

    context.load_id = _req.load_id;

    context.rowset_state = PREPARED;

    context.segments_overlap = OVERLAPPING;

    context.tablet_schema = _tablet_schema;

    context.newest_write_timestamp = UnixSeconds();

    context.tablet_id = _req.tablet_id;

    context.index_id = _req.index_id;

    context.tablet = _tablet;

    context.write_type = DataWriteType::TYPE_DIRECT;

    context.mow_context = mow_context;

    context.write_file_cache = _req.write_file_cache;

    context.partial_update_info = _partial_update_info;

    _rowset_writer = DORIS_TRY(_tablet->create_rowset_writer(context, false));

    _pending_rs_guard = _engine.pending_local_rowsets().add(context.rowset_id);

    _calc_delete_bitmap_token = _engine.calc_delete_bitmap_executor()->create_token();

    _is_init = true;

    return Status::OK();

}

Status BaseRowsetBuilder::build_rowset() {

    std::lock_guard<std::mutex> l(_lock);

    DCHECK(_is_init) << "rowset builder is supposed be to initialized before "

                        "build_rowset() being called";

    SCOPED_TIMER(_build_rowset_timer);

    // use rowset meta manager to save meta

    RETURN_NOT_OK_STATUS_WITH_WARN(_rowset_writer->build(_rowset), "fail to build rowset");

    return Status::OK();

}

Status BaseRowsetBuilder::submit_calc_delete_bitmap_task() {

    if (!_tablet->enable_unique_key_merge_on_write()) {

        return Status::OK();

    }

    std::lock_guard<std::mutex> l(_lock);

    SCOPED_TIMER(_submit_delete_bitmap_timer);

    if (_partial_update_info && _partial_update_info->is_flexible_partial_update()) {

        if (_rowset->num_segments() > 1) {

            // in flexible partial update, when there are more one segment in one load,

            // we need to do alignment process for same keys between segments, we haven't

            // implemented it yet and just report an error when encouter this situation

            return Status::NotSupported(

                    "too large input data in flexible partial update, Please "

                    "reduce the amount of data imported in a single load.");

        }

    }

    // tablet is under alter process. The delete bitmap will be calculated after conversion.

    if (_tablet->tablet_state() == TABLET_NOTREADY) {

        LOG(INFO) << "tablet is under alter process, delete bitmap will be calculated later, "

                     "tablet_id: "

                  << _tablet->tablet_id() << " txn_id: " << _req.txn_id;

        return Status::OK();

    }

    auto* beta_rowset = reinterpret_cast<BetaRowset*>(_rowset.get());

    std::vector<segment_v2::SegmentSharedPtr> segments;

    RETURN_IF_ERROR(beta_rowset->load_segments(&segments));

    if (segments.size() > 1) {

        // calculate delete bitmap between segments

        RETURN_IF_ERROR(

                _tablet->calc_delete_bitmap_between_segments(_rowset, segments, _delete_bitmap));

    }

    // For partial update, we need to fill in the entire row of data, during the calculation

    // of the delete bitmap. This operation is resource-intensive, and we need to minimize

    // the number of times it occurs. Therefore, we skip this operation here.

    if (_partial_update_info->is_partial_update()) {

        // for partial update, the delete bitmap calculation is done while append_block()

        // we print it's summarize logs here before commit.

        LOG(INFO) << fmt::format(

                "{} calc delete bitmap summary before commit: tablet({}), txn_id({}), "

                "rowset_ids({}), cur max_version({}), bitmap num({}), num rows updated({}), num "

                "rows new added({}), num rows deleted({}), total rows({})",

                _partial_update_info->partial_update_mode_str(), tablet()->tablet_id(), _req.txn_id,

                _rowset_ids.size(), rowset_writer()->context().mow_context->max_version,

                _delete_bitmap->delete_bitmap.size(), rowset_writer()->num_rows_updated(),

                rowset_writer()->num_rows_new_added(), rowset_writer()->num_rows_deleted(),

                rowset_writer()->num_rows());

        return Status::OK();

    }

    LOG(INFO) << "submit calc delete bitmap task to executor, tablet_id: " << tablet()->tablet_id()

              << ", txn_id: " << _req.txn_id;

    return BaseTablet::commit_phase_update_delete_bitmap(_tablet, _rowset, _rowset_ids,

                                                         _delete_bitmap, segments, _req.txn_id,

                                                         _calc_delete_bitmap_token.get(), nullptr);

}

Status BaseRowsetBuilder::wait_calc_delete_bitmap() {

    if (!_tablet->enable_unique_key_merge_on_write() || _partial_update_info->is_partial_update()) {

        return Status::OK();

    }

    std::lock_guard<std::mutex> l(_lock);

    SCOPED_TIMER(_wait_delete_bitmap_timer);

    RETURN_IF_ERROR(_calc_delete_bitmap_token->wait());

    LOG(INFO) << "Got result of calc delete bitmap task from executor, tablet_id: "

              << _tablet->tablet_id() << ", txn_id: " << _req.txn_id;

    return Status::OK();

}

Status RowsetBuilder::commit_txn() {

    if (tablet()->enable_unique_key_merge_on_write() &&

        config::enable_merge_on_write_correctness_check && _rowset->num_rows() != 0 &&

        tablet()->tablet_state() != TABLET_NOTREADY) {

        auto st = tablet()->check_delete_bitmap_correctness(

                _delete_bitmap, _rowset->end_version() - 1, _req.txn_id, _rowset_ids);

        if (!st.ok()) {

            LOG(WARNING) << fmt::format(

                    "[tablet_id:{}][txn_id:{}][load_id:{}][partition_id:{}] "

                    "delete bitmap correctness check failed in commit phase!",

                    _req.tablet_id, _req.txn_id, UniqueId(_req.load_id).to_string(),

                    _req.partition_id);

            return st;

        }

    }

    std::lock_guard<std::mutex> l(_lock);

    SCOPED_TIMER(_commit_txn_timer);

    const RowsetWriterContext& rw_ctx = _rowset_writer->context();

    if (rw_ctx.tablet_schema->num_variant_columns() > 0) {

        // Need to merge schema with `rw_ctx.merged_tablet_schema` in prior,

        // merged schema keeps the newest merged schema for the rowset, which is updated and merged

        // during flushing segments.

        if (rw_ctx.merged_tablet_schema != nullptr) {

            RETURN_IF_ERROR(tablet()->update_by_least_common_schema(rw_ctx.merged_tablet_schema));

        }

        // We should merge rowset schema further, in case that the merged_tablet_schema maybe null

        // when enable_memtable_on_sink_node is true, the merged_tablet_schema will not be passed to

        // the destination backend.

        // update tablet schema when meet variant columns, before commit_txn

        // Eg. rowset schema:       A(int),    B(float),  C(int), D(int)

        // _tabelt->tablet_schema:  A(bigint), B(double)

        //  => update_schema:       A(bigint), B(double), C(int), D(int)

        RETURN_IF_ERROR(tablet()->update_by_least_common_schema(rw_ctx.tablet_schema));

    }

    // Transfer ownership of `PendingRowsetGuard` to `TxnManager`

    Status res = _engine.txn_manager()->commit_txn(

            _req.partition_id, *tablet(), _req.txn_id, _req.load_id, _rowset,

            std::move(_pending_rs_guard), false, _partial_update_info);

    if (!res && !res.is<PUSH_TRANSACTION_ALREADY_EXIST>()) {

        LOG(WARNING) << "Failed to commit txn: " << _req.txn_id

                     << " for rowset: " << _rowset->rowset_id();

        return res;

    }

    if (_tablet->enable_unique_key_merge_on_write()) {

        _engine.txn_manager()->set_txn_related_delete_bitmap(

                _req.partition_id, _req.txn_id, tablet()->tablet_id(), tablet()->tablet_uid(), true,

                _delete_bitmap, _rowset_ids, _partial_update_info);

    }

    _is_committed = true;

    return Status::OK();

}

Status BaseRowsetBuilder::cancel() {

    std::lock_guard<std::mutex> l(_lock);

    if (_is_cancelled) {

        return Status::OK();

    }

    if (_calc_delete_bitmap_token != nullptr) {

        _calc_delete_bitmap_token->cancel();

    }

    _is_cancelled = true;

    return Status::OK();

}

void BaseRowsetBuilder::_build_current_tablet_schema(int64_t index_id,

                                                     const OlapTableSchemaParam* table_schema_param,

                                                     const TabletSchema& ori_tablet_schema) {

    _tablet_schema->copy_from(ori_tablet_schema);

    // find the right index id

    int i = 0;

    auto indexes = table_schema_param->indexes();

    for (; i < indexes.size(); i++) {

        if (indexes[i]->index_id == index_id) {

            break;

        }

    }

    if (!indexes.empty() && !indexes[i]->columns.empty() &&

        indexes[i]->columns[0]->unique_id() >= 0) {

        _tablet_schema->build_current_tablet_schema(index_id, table_schema_param->version(),

                                                    indexes[i], ori_tablet_schema);

    }

    if (_tablet_schema->schema_version() > ori_tablet_schema.schema_version()) {

        // After schema change, should include extracted column

        // For example: a table has two columns, k and v

        // After adding a column v2, the schema version increases, max_version_schema needs to be updated.

        // _tablet_schema includes k, v, and v2

        // if v is a variant, need to add the columns decomposed from the v to the _tablet_schema.

        if (_tablet_schema->num_variant_columns() > 0) {

            TabletSchemaSPtr max_version_schema = std::make_shared<TabletSchema>();

            max_version_schema->copy_from(*_tablet_schema);

            max_version_schema->copy_extracted_columns(ori_tablet_schema);

            _tablet->update_max_version_schema(max_version_schema);

        } else {

            _tablet->update_max_version_schema(_tablet_schema);

        }

    }

    _tablet_schema->set_table_id(table_schema_param->table_id());

    _tablet_schema->set_db_id(table_schema_param->db_id());

    if (table_schema_param->is_partial_update()) {

        _tablet_schema->set_auto_increment_column(table_schema_param->auto_increment_coulumn());

    }

    // set partial update columns info

    _partial_update_info = std::make_shared<PartialUpdateInfo>();

    _partial_update_info->init(

            *_tablet_schema, table_schema_param->unique_key_update_mode(),

            table_schema_param->partial_update_input_columns(),

            table_schema_param->is_strict_mode(), table_schema_param->timestamp_ms(),

            table_schema_param->nano_seconds(), table_schema_param->timezone(),

            table_schema_param->auto_increment_coulumn(),

            table_schema_param->sequence_map_col_uid(), _max_version_in_flush_phase);

}

} // namespace doris