fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph
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260 lines
8.0 KiB
260 lines
8.0 KiB
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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//
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#pragma once
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#ifndef ROCKSDB_LITE
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#include <stdio.h>
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#include <stdlib.h>
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#include <algorithm>
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#include <functional>
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#include <map>
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#include <sstream>
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#include <string>
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#include <vector>
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#include "rocksdb/env.h"
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#include "rocksdb/iterator.h"
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#include "rocksdb/ldb_tool.h"
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#include "rocksdb/options.h"
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#include "rocksdb/slice.h"
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#include "rocksdb/utilities/db_ttl.h"
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#include "rocksdb/utilities/ldb_cmd_execute_result.h"
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namespace rocksdb {
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class LDBCommand {
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public:
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// Command-line arguments
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static const std::string ARG_DB;
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static const std::string ARG_PATH;
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static const std::string ARG_HEX;
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static const std::string ARG_KEY_HEX;
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static const std::string ARG_VALUE_HEX;
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static const std::string ARG_CF_NAME;
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static const std::string ARG_TTL;
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static const std::string ARG_TTL_START;
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static const std::string ARG_TTL_END;
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static const std::string ARG_TIMESTAMP;
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static const std::string ARG_TRY_LOAD_OPTIONS;
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static const std::string ARG_IGNORE_UNKNOWN_OPTIONS;
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static const std::string ARG_FROM;
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static const std::string ARG_TO;
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static const std::string ARG_MAX_KEYS;
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static const std::string ARG_BLOOM_BITS;
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static const std::string ARG_FIX_PREFIX_LEN;
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static const std::string ARG_COMPRESSION_TYPE;
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static const std::string ARG_COMPRESSION_MAX_DICT_BYTES;
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static const std::string ARG_BLOCK_SIZE;
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static const std::string ARG_AUTO_COMPACTION;
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static const std::string ARG_DB_WRITE_BUFFER_SIZE;
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static const std::string ARG_WRITE_BUFFER_SIZE;
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static const std::string ARG_FILE_SIZE;
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static const std::string ARG_CREATE_IF_MISSING;
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static const std::string ARG_NO_VALUE;
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struct ParsedParams {
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std::string cmd;
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std::vector<std::string> cmd_params;
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std::map<std::string, std::string> option_map;
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std::vector<std::string> flags;
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};
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static LDBCommand* SelectCommand(const ParsedParams& parsed_parms);
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static LDBCommand* InitFromCmdLineArgs(
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const std::vector<std::string>& args, const Options& options,
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const LDBOptions& ldb_options,
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const std::vector<ColumnFamilyDescriptor>* column_families,
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const std::function<LDBCommand*(const ParsedParams&)>& selector =
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SelectCommand);
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static LDBCommand* InitFromCmdLineArgs(
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int argc, char** argv, const Options& options,
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const LDBOptions& ldb_options,
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const std::vector<ColumnFamilyDescriptor>* column_families);
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bool ValidateCmdLineOptions();
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virtual Options PrepareOptionsForOpenDB();
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virtual void SetDBOptions(Options options) { options_ = options; }
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virtual void SetColumnFamilies(
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const std::vector<ColumnFamilyDescriptor>* column_families) {
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if (column_families != nullptr) {
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column_families_ = *column_families;
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} else {
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column_families_.clear();
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}
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}
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void SetLDBOptions(const LDBOptions& ldb_options) {
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ldb_options_ = ldb_options;
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}
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virtual bool NoDBOpen() { return false; }
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virtual ~LDBCommand() { CloseDB(); }
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/* Run the command, and return the execute result. */
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void Run();
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virtual void DoCommand() = 0;
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LDBCommandExecuteResult GetExecuteState() { return exec_state_; }
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void ClearPreviousRunState() { exec_state_.Reset(); }
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// Consider using Slice::DecodeHex directly instead if you don't need the
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// 0x prefix
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static std::string HexToString(const std::string& str);
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// Consider using Slice::ToString(true) directly instead if
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// you don't need the 0x prefix
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static std::string StringToHex(const std::string& str);
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static const char* DELIM;
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protected:
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LDBCommandExecuteResult exec_state_;
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std::string db_path_;
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std::string column_family_name_;
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DB* db_;
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DBWithTTL* db_ttl_;
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std::map<std::string, ColumnFamilyHandle*> cf_handles_;
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/**
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* true implies that this command can work if the db is opened in read-only
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* mode.
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*/
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bool is_read_only_;
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/** If true, the key is input/output as hex in get/put/scan/delete etc. */
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bool is_key_hex_;
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/** If true, the value is input/output as hex in get/put/scan/delete etc. */
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bool is_value_hex_;
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/** If true, the value is treated as timestamp suffixed */
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bool is_db_ttl_;
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// If true, the kvs are output with their insert/modify timestamp in a ttl db
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bool timestamp_;
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// If true, try to construct options from DB's option files.
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bool try_load_options_;
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bool ignore_unknown_options_;
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bool create_if_missing_;
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/**
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* Map of options passed on the command-line.
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*/
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const std::map<std::string, std::string> option_map_;
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/**
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* Flags passed on the command-line.
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*/
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const std::vector<std::string> flags_;
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/** List of command-line options valid for this command */
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const std::vector<std::string> valid_cmd_line_options_;
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bool ParseKeyValue(const std::string& line, std::string* key,
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std::string* value, bool is_key_hex, bool is_value_hex);
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LDBCommand(const std::map<std::string, std::string>& options,
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const std::vector<std::string>& flags, bool is_read_only,
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const std::vector<std::string>& valid_cmd_line_options);
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void OpenDB();
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void CloseDB();
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ColumnFamilyHandle* GetCfHandle();
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static std::string PrintKeyValue(const std::string& key,
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const std::string& value, bool is_key_hex,
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bool is_value_hex);
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static std::string PrintKeyValue(const std::string& key,
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const std::string& value, bool is_hex);
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/**
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* Return true if the specified flag is present in the specified flags vector
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*/
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static bool IsFlagPresent(const std::vector<std::string>& flags,
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const std::string& flag) {
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return (std::find(flags.begin(), flags.end(), flag) != flags.end());
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}
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static std::string HelpRangeCmdArgs();
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/**
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* A helper function that returns a list of command line options
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* used by this command. It includes the common options and the ones
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* passed in.
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*/
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static std::vector<std::string> BuildCmdLineOptions(
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std::vector<std::string> options);
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bool ParseIntOption(const std::map<std::string, std::string>& options,
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const std::string& option, int& value,
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LDBCommandExecuteResult& exec_state);
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bool ParseStringOption(const std::map<std::string, std::string>& options,
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const std::string& option, std::string* value);
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Options options_;
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std::vector<ColumnFamilyDescriptor> column_families_;
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LDBOptions ldb_options_;
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private:
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/**
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* Interpret command line options and flags to determine if the key
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* should be input/output in hex.
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*/
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bool IsKeyHex(const std::map<std::string, std::string>& options,
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const std::vector<std::string>& flags);
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/**
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* Interpret command line options and flags to determine if the value
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* should be input/output in hex.
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*/
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bool IsValueHex(const std::map<std::string, std::string>& options,
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const std::vector<std::string>& flags);
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/**
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* Returns the value of the specified option as a boolean.
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* default_val is used if the option is not found in options.
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* Throws an exception if the value of the option is not
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* "true" or "false" (case insensitive).
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*/
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bool ParseBooleanOption(const std::map<std::string, std::string>& options,
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const std::string& option, bool default_val);
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/**
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* Converts val to a boolean.
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* val must be either true or false (case insensitive).
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* Otherwise an exception is thrown.
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*/
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bool StringToBool(std::string val);
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};
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class LDBCommandRunner {
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public:
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static void PrintHelp(const LDBOptions& ldb_options, const char* exec_name);
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static void RunCommand(
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int argc, char** argv, Options options, const LDBOptions& ldb_options,
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const std::vector<ColumnFamilyDescriptor>* column_families);
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};
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} // namespace rocksdb
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#endif // ROCKSDB_LITE
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