// 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 "service/http_service.h"

#include <event2/bufferevent.h>

#include <event2/http.h>

#include <gen_cpp/FrontendService_types.h>

#include <string>

#include <vector>

#include "common/config.h"

#include "common/status.h"

#include "http/action/adjust_log_level.h"

#include "http/action/adjust_tracing_dump.h"

#include "http/action/calc_file_crc_action.h"

#include "http/action/check_rpc_channel_action.h"

#include "http/action/check_tablet_segment_action.h"

#include "http/action/checksum_action.h"

#include "http/action/clear_cache_action.h"

#include "http/action/compaction_action.h"

#include "http/action/compaction_score_action.h"

#include "http/action/config_action.h"

#include "http/action/debug_point_action.h"

#include "http/action/download_action.h"

#include "http/action/download_binlog_action.h"

#include "http/action/file_cache_action.h"

#include "http/action/health_action.h"

#include "http/action/http_stream.h"

#include "http/action/jeprofile_actions.h"

#include "http/action/load_stream_action.h"

#include "http/action/meta_action.h"

#include "http/action/metrics_action.h"

#include "http/action/pad_rowset_action.h"

#include "http/action/pipeline_task_action.h"

#include "http/action/pprof_actions.h"

#include "http/action/reload_tablet_action.h"

#include "http/action/report_action.h"

#include "http/action/reset_rpc_channel_action.h"

#include "http/action/restore_tablet_action.h"

#include "http/action/show_nested_index_file_action.h"

#include "http/action/snapshot_action.h"

#include "http/action/stream_load.h"

#include "http/action/stream_load_2pc.h"

#include "http/action/tablet_migration_action.h"

#include "http/action/tablets_distribution_action.h"

#include "http/action/tablets_info_action.h"

#include "http/action/version_action.h"

#include "http/default_path_handlers.h"

#include "http/ev_http_server.h"

#include "http/http_method.h"

#include "http/web_page_handler.h"

#include "olap/options.h"

#include "runtime/exec_env.h"

#include "runtime/load_path_mgr.h"

#include "util/doris_metrics.h"

namespace doris {

namespace {

std::shared_ptr<bufferevent_rate_limit_group> get_rate_limit_group(event_base* event_base) {

    auto rate_limit = config::download_binlog_rate_limit_kbs;

    if (rate_limit <= 0) {

        return nullptr;

    }

    auto max_value = std::numeric_limits<int32_t>::max() / 1024 * 10;

    if (rate_limit > max_value) {

        LOG(WARNING) << "rate limit is too large, set to max value.";

        rate_limit = max_value;

    }

    struct timeval cfg_tick = {0, 100 * 1000}; // 100ms

    rate_limit = rate_limit / 10 * 1024;       // convert to KB/S

    auto token_bucket = std::unique_ptr<ev_token_bucket_cfg, decltype(&ev_token_bucket_cfg_free)>(

            ev_token_bucket_cfg_new(rate_limit, rate_limit * 2, rate_limit, rate_limit * 2,

                                    &cfg_tick),

            ev_token_bucket_cfg_free);

    return std::shared_ptr<bufferevent_rate_limit_group>(

            bufferevent_rate_limit_group_new(event_base, token_bucket.get()),

            bufferevent_rate_limit_group_free);

}

} // namespace

HttpService::HttpService(ExecEnv* env, int port, int num_threads)

        : _env(env),

          _ev_http_server(new EvHttpServer(port, num_threads)),

          _web_page_handler(new WebPageHandler(_ev_http_server.get())) {}

HttpService::~HttpService() {

    stop();

}

// NOLINTBEGIN(readability-function-size)

Status HttpService::start() {

    add_default_path_handlers(_web_page_handler.get());

    auto event_base = _ev_http_server->get_event_bases()[0];

    _rate_limit_group = get_rate_limit_group(event_base.get());

    // register load

    StreamLoadAction* streamload_action = _pool.add(new StreamLoadAction(_env));

    _ev_http_server->register_handler(HttpMethod::PUT, "/api/{db}/{table}/_load",

                                      streamload_action);

    _ev_http_server->register_handler(HttpMethod::PUT, "/api/{db}/{table}/_stream_load",

                                      streamload_action);

    StreamLoad2PCAction* streamload_2pc_action = _pool.add(new StreamLoad2PCAction(_env));

    _ev_http_server->register_handler(HttpMethod::PUT, "/api/{db}/_stream_load_2pc",

                                      streamload_2pc_action);

    _ev_http_server->register_handler(HttpMethod::PUT, "/api/{db}/{table}/_stream_load_2pc",

                                      streamload_2pc_action);

    // register http_stream

    HttpStreamAction* http_stream_action = _pool.add(new HttpStreamAction(_env));

    _ev_http_server->register_handler(HttpMethod::PUT, "/api/_http_stream", http_stream_action);

    // register download action

    std::vector<std::string> allow_paths;

    for (auto& path : _env->store_paths()) {

        allow_paths.emplace_back(path.path);

    }

    DownloadAction* download_action = _pool.add(new DownloadAction(_env, nullptr, allow_paths));

    _ev_http_server->register_handler(HttpMethod::HEAD, "/api/_download_load", download_action);

    _ev_http_server->register_handler(HttpMethod::GET, "/api/_download_load", download_action);

    DownloadAction* tablet_download_action =

            _pool.add(new DownloadAction(_env, _rate_limit_group, allow_paths));

    _ev_http_server->register_handler(HttpMethod::HEAD, "/api/_tablet/_download",

                                      tablet_download_action);

    _ev_http_server->register_handler(HttpMethod::GET, "/api/_tablet/_download",

                                      tablet_download_action);

    if (config::enable_single_replica_load) {

        DownloadAction* single_replica_download_action = _pool.add(new DownloadAction(

                _env, nullptr, allow_paths, config::single_replica_load_download_num_workers));

        _ev_http_server->register_handler(HttpMethod::HEAD, "/api/_single_replica/_download",

                                          single_replica_download_action);

        _ev_http_server->register_handler(HttpMethod::GET, "/api/_single_replica/_download",

                                          single_replica_download_action);

    }

    DownloadAction* error_log_download_action =

            _pool.add(new DownloadAction(_env, _env->load_path_mgr()->get_load_error_file_dir()));

    _ev_http_server->register_handler(HttpMethod::GET, "/api/_load_error_log",

                                      error_log_download_action);

    _ev_http_server->register_handler(HttpMethod::HEAD, "/api/_load_error_log",

                                      error_log_download_action);

    DownloadBinlogAction* download_binlog_action =

            _pool.add(new DownloadBinlogAction(_env, _rate_limit_group));

    _ev_http_server->register_handler(HttpMethod::GET, "/api/_binlog/_download",

                                      download_binlog_action);

    _ev_http_server->register_handler(HttpMethod::HEAD, "/api/_binlog/_download",

                                      download_binlog_action);

    AdjustLogLevelAction* adjust_log_level_action = _pool.add(new AdjustLogLevelAction());

    _ev_http_server->register_handler(HttpMethod::POST, "api/glog/adjust", adjust_log_level_action);

    //TODO: add query GET interface

    auto* adjust_tracing_dump = _pool.add(new AdjustTracingDump());

    _ev_http_server->register_handler(HttpMethod::POST, "api/pipeline/tracing",

                                      adjust_tracing_dump);

    // Register BE version action

    VersionAction* version_action =

            _pool.add(new VersionAction(_env, TPrivilegeHier::GLOBAL, TPrivilegeType::NONE));

    _ev_http_server->register_handler(HttpMethod::GET, "/api/be_version_info", version_action);

    // Register BE health action

    HealthAction* health_action = _pool.add(new HealthAction());

    _ev_http_server->register_handler(HttpMethod::GET, "/api/health", health_action);

    // Clear cache action

    ClearCacheAction* clear_cache_action = _pool.add(new ClearCacheAction());

    _ev_http_server->register_handler(HttpMethod::GET, "/api/clear_cache/{type}",

                                      clear_cache_action);

    // Dump all running pipeline tasks

    PipelineTaskAction* pipeline_task_action = _pool.add(new PipelineTaskAction());

    _ev_http_server->register_handler(HttpMethod::GET, "/api/running_pipeline_tasks",

                                      pipeline_task_action);

    // Dump all running pipeline tasks which has been running for more than {duration} seconds

    LongPipelineTaskAction* long_pipeline_task_action = _pool.add(new LongPipelineTaskAction());

    _ev_http_server->register_handler(HttpMethod::GET, "/api/running_pipeline_tasks/{duration}",

                                      long_pipeline_task_action);

    // Register BE LoadStream action

    LoadStreamAction* load_stream_action = _pool.add(new LoadStreamAction());

    _ev_http_server->register_handler(HttpMethod::GET, "/api/load_streams", load_stream_action);

    QueryPipelineTaskAction* query_pipeline_task_action = _pool.add(new QueryPipelineTaskAction());

    _ev_http_server->register_handler(HttpMethod::GET, "/api/query_pipeline_tasks/{query_id}",

                                      query_pipeline_task_action);

    // Register Tablets Info action

    TabletsInfoAction* tablets_info_action =

            _pool.add(new TabletsInfoAction(_env, TPrivilegeHier::GLOBAL, TPrivilegeType::ADMIN));

    _ev_http_server->register_handler(HttpMethod::GET, "/tablets_json", tablets_info_action);

    // Register Tablets Distribution action

    TabletsDistributionAction* tablets_distribution_action = _pool.add(

            new TabletsDistributionAction(_env, TPrivilegeHier::GLOBAL, TPrivilegeType::ADMIN));

    _ev_http_server->register_handler(HttpMethod::GET, "/api/tablets_distribution",

                                      tablets_distribution_action);

    // Register tablet migration action

    TabletMigrationAction* tablet_migration_action = _pool.add(

            new TabletMigrationAction(_env, TPrivilegeHier::GLOBAL, TPrivilegeType::ADMIN));

    _ev_http_server->register_handler(HttpMethod::GET, "/api/tablet_migration",

                                      tablet_migration_action);

    // register pprof actions

    static_cast<void>(PprofActions::setup(_env, _ev_http_server.get(), _pool));

    // register jeprof actions

    static_cast<void>(JeprofileActions::setup(_env, _ev_http_server.get(), _pool));

    // register metrics

    {

        auto* action =

                _pool.add(new MetricsAction(DorisMetrics::instance()->metric_registry(), _env,

                                            TPrivilegeHier::GLOBAL, TPrivilegeType::NONE));

        _ev_http_server->register_handler(HttpMethod::GET, "/metrics", action);

    }

    MetaAction* meta_action =

            _pool.add(new MetaAction(_env, TPrivilegeHier::GLOBAL, TPrivilegeType::ADMIN));

    _ev_http_server->register_handler(HttpMethod::GET, "/api/meta/{op}/{tablet_id}", meta_action);

    FileCacheAction* file_cache_action = _pool.add(new FileCacheAction());

    _ev_http_server->register_handler(HttpMethod::GET, "/api/file_cache", file_cache_action);

#ifndef BE_TEST

    // Register BE checksum action

    ChecksumAction* checksum_action =

            _pool.add(new ChecksumAction(_env, TPrivilegeHier::GLOBAL, TPrivilegeType::ADMIN));

    _ev_http_server->register_handler(HttpMethod::GET, "/api/checksum", checksum_action);

    // Register BE reload tablet action

    ReloadTabletAction* reload_tablet_action =

            _pool.add(new ReloadTabletAction(_env, TPrivilegeHier::GLOBAL, TPrivilegeType::ADMIN));

    _ev_http_server->register_handler(HttpMethod::GET, "/api/reload_tablet", reload_tablet_action);

    RestoreTabletAction* restore_tablet_action =

            _pool.add(new RestoreTabletAction(_env, TPrivilegeHier::GLOBAL, TPrivilegeType::ADMIN));

    _ev_http_server->register_handler(HttpMethod::POST, "/api/restore_tablet",

                                      restore_tablet_action);

    // Register BE snapshot action

    SnapshotAction* snapshot_action =

            _pool.add(new SnapshotAction(_env, TPrivilegeHier::GLOBAL, TPrivilegeType::ADMIN));

    _ev_http_server->register_handler(HttpMethod::GET, "/api/snapshot", snapshot_action);

    CompactionScoreAction* compaction_score_action =

            _pool.add(new CompactionScoreAction(_env, TPrivilegeHier::GLOBAL, TPrivilegeType::ADMIN,

                                                _env->get_storage_engine()->tablet_manager()));

    _ev_http_server->register_handler(HttpMethod::GET, "/api/compaction_score",

                                      compaction_score_action);

#endif

    // 2 compaction actions

    CompactionAction* show_compaction_action = _pool.add(new CompactionAction(

            CompactionActionType::SHOW_INFO, _env, TPrivilegeHier::GLOBAL, TPrivilegeType::ADMIN));

    _ev_http_server->register_handler(HttpMethod::GET, "/api/compaction/show",

                                      show_compaction_action);

    CompactionAction* run_compaction_action =

            _pool.add(new CompactionAction(CompactionActionType::RUN_COMPACTION, _env,

                                           TPrivilegeHier::GLOBAL, TPrivilegeType::ADMIN));

    _ev_http_server->register_handler(HttpMethod::POST, "/api/compaction/run",

                                      run_compaction_action);

    CompactionAction* run_status_compaction_action =

            _pool.add(new CompactionAction(CompactionActionType::RUN_COMPACTION_STATUS, _env,

                                           TPrivilegeHier::GLOBAL, TPrivilegeType::ADMIN));

    _ev_http_server->register_handler(HttpMethod::GET, "/api/compaction/run_status",

                                      run_status_compaction_action);

    ConfigAction* update_config_action =

            _pool.add(new ConfigAction(ConfigActionType::UPDATE_CONFIG));

    _ev_http_server->register_handler(HttpMethod::POST, "/api/update_config", update_config_action);

    ConfigAction* show_config_action = _pool.add(new ConfigAction(ConfigActionType::SHOW_CONFIG));

    _ev_http_server->register_handler(HttpMethod::GET, "/api/show_config", show_config_action);

    // 3 check action

    CheckRPCChannelAction* check_rpc_channel_action = _pool.add(

            new CheckRPCChannelAction(_env, TPrivilegeHier::GLOBAL, TPrivilegeType::ADMIN));

    _ev_http_server->register_handler(HttpMethod::GET,

                                      "/api/check_rpc_channel/{ip}/{port}/{payload_size}",

                                      check_rpc_channel_action);

    ResetRPCChannelAction* reset_rpc_channel_action = _pool.add(

            new ResetRPCChannelAction(_env, TPrivilegeHier::GLOBAL, TPrivilegeType::ADMIN));

    _ev_http_server->register_handler(HttpMethod::GET, "/api/reset_rpc_channel/{endpoints}",

                                      reset_rpc_channel_action);

    CheckTabletSegmentAction* check_tablet_segment_action = _pool.add(

            new CheckTabletSegmentAction(_env, TPrivilegeHier::GLOBAL, TPrivilegeType::ADMIN));

    _ev_http_server->register_handler(HttpMethod::POST, "/api/check_tablet_segment_lost",

                                      check_tablet_segment_action);

    PadRowsetAction* pad_rowset_action =

            _pool.add(new PadRowsetAction(_env, TPrivilegeHier::GLOBAL, TPrivilegeType::ADMIN));

    _ev_http_server->register_handler(HttpMethod::POST, "/api/pad_rowset", pad_rowset_action);

    // debug point

    AddDebugPointAction* add_debug_point_action =

            _pool.add(new AddDebugPointAction(_env, TPrivilegeHier::GLOBAL, TPrivilegeType::ADMIN));

    _ev_http_server->register_handler(HttpMethod::POST, "/api/debug_point/add/{debug_point}",

                                      add_debug_point_action);

    RemoveDebugPointAction* remove_debug_point_action = _pool.add(

            new RemoveDebugPointAction(_env, TPrivilegeHier::GLOBAL, TPrivilegeType::ADMIN));

    _ev_http_server->register_handler(HttpMethod::POST, "/api/debug_point/remove/{debug_point}",

                                      remove_debug_point_action);

    ClearDebugPointsAction* clear_debug_points_action = _pool.add(

            new ClearDebugPointsAction(_env, TPrivilegeHier::GLOBAL, TPrivilegeType::ADMIN));

    _ev_http_server->register_handler(HttpMethod::POST, "/api/debug_point/clear",

                                      clear_debug_points_action);

    ReportAction* report_tablet_action = _pool.add(new ReportAction(

            _env, TPrivilegeHier::GLOBAL, TPrivilegeType::ADMIN, "REPORT_OLAP_TABLE"));

    _ev_http_server->register_handler(HttpMethod::GET, "/api/report/tablet", report_tablet_action);

    ReportAction* report_disk_action = _pool.add(new ReportAction(

            _env, TPrivilegeHier::GLOBAL, TPrivilegeType::ADMIN, "REPORT_DISK_STATE"));

    _ev_http_server->register_handler(HttpMethod::GET, "/api/report/disk", report_disk_action);

    CalcFileCrcAction* calc_crc_action =

            _pool.add(new CalcFileCrcAction(_env, TPrivilegeHier::GLOBAL, TPrivilegeType::ADMIN));

    _ev_http_server->register_handler(HttpMethod::GET, "/api/calc_crc", calc_crc_action);

    ShowNestedIndexFileAction* show_nested_index_file_action = _pool.add(

            new ShowNestedIndexFileAction(_env, TPrivilegeHier::GLOBAL, TPrivilegeType::ADMIN));

    _ev_http_server->register_handler(HttpMethod::GET, "/api/show_nested_index_file",

                                      show_nested_index_file_action);

    ReportAction* report_task_action = _pool.add(

            new ReportAction(_env, TPrivilegeHier::GLOBAL, TPrivilegeType::ADMIN, "REPORT_TASK"));

    _ev_http_server->register_handler(HttpMethod::GET, "/api/report/task", report_task_action);

    _ev_http_server->start();

    return Status::OK();

}

// NOLINTEND(readability-function-size)

void HttpService::stop() {

    if (stopped) {

        return;

    }

    _ev_http_server->stop();

    _pool.clear();

    stopped = true;

}

int HttpService::get_real_port() const {

    return _ev_http_server->get_real_port();

}

} // namespace doris