109 lines
3.9 KiB
C++
109 lines
3.9 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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#ifndef DORIS_BE_SRC_RUNTIME_SNAPSHOT_LOADER_H
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#define DORIS_BE_SRC_RUNTIME_SNAPSHOT_LOADER_H
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#include <stdint.h>
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#include <map>
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#include <string>
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#include <vector>
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#include "common/status.h"
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#include "gen_cpp/Types_types.h"
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#include "olap/tablet.h"
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#include "runtime/client_cache.h"
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namespace doris {
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class ExecEnv;
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class StorageBackend;
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struct FileStat;
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/*
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* Upload:
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* upload() will upload the specified snapshot
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* to remote storage via broker.
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* Each call of upload() is responsible for several tablet snapshots.
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*
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* It will try to get the existing files in remote storage,
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* and only upload the incremental part of files.
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*
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* Download:
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* download() will download the remote tablet snapshot files
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* to local snapshot dir via broker.
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* It will also only download files which does not exist in local dir.
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*
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* Move:
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* move() is the final step of restore process. it will replace the
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* old tablet data dir with the newly downloaded snapshot dir.
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* and reload the tablet header to take this tablet on line.
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*
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*/
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class SnapshotLoader {
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public:
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SnapshotLoader(ExecEnv* env, int64_t job_id, int64_t task_id);
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SnapshotLoader(ExecEnv* env, int64_t job_id, int64_t task_id,
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const TNetworkAddress& broker_addr,
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const std::map<std::string, std::string>& broker_prop);
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SnapshotLoader(ExecEnv* env, int64_t job_id, int64_t task_id,
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const std::map<std::string, std::string>& broker_prop);
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~SnapshotLoader();
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Status upload(const std::map<std::string, std::string>& src_to_dest_path,
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std::map<int64_t, std::vector<std::string>>* tablet_files);
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Status download(const std::map<std::string, std::string>& src_to_dest_path,
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std::vector<int64_t>* downloaded_tablet_ids);
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Status move(const std::string& snapshot_path, TabletSharedPtr tablet, bool overwrite);
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private:
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Status _get_tablet_id_and_schema_hash_from_file_path(const std::string& src_path,
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int64_t* tablet_id, int32_t* schema_hash);
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Status _check_local_snapshot_paths(const std::map<std::string, std::string>& src_to_dest_path,
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bool check_src);
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Status _get_existing_files_from_local(const std::string& local_path,
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std::vector<std::string>* local_files);
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bool _end_with(const std::string& str, const std::string& match);
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Status _replace_tablet_id(const std::string& file_name, int64_t tablet_id,
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std::string* new_file_name);
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Status _get_tablet_id_from_remote_path(const std::string& remote_path, int64_t* tablet_id);
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Status _report_every(int report_threshold, int* counter, int finished_num, int total_num,
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TTaskType::type type);
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private:
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ExecEnv* _env;
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int64_t _job_id;
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int64_t _task_id;
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const TNetworkAddress _broker_addr;
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const std::map<std::string, std::string> _prop;
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std::unique_ptr<StorageBackend> _storage_backend;
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};
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} // end namespace doris
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#endif // DORIS_BE_SRC_RUNTIME_SNAPSHOT_LOADER_H
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