ldb_cmd.cc 53.4 KB
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//  Copyright (c) 2013, Facebook, Inc.  All rights reserved.
//  This source code is licensed under the BSD-style license found in the
//  LICENSE file in the root directory of this source tree. An additional grant
//  of patent rights can be found in the PATENTS file in the same directory.
//
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#include "util/ldb_cmd.h"
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#include "db/dbformat.h"
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#include "db/db_impl.h"
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#include "db/log_reader.h"
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#include "db/filename.h"
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#include "db/write_batch_internal.h"
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#include "rocksdb/write_batch.h"
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#include "rocksdb/column_family.h"
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#include "util/coding.h"

#include <ctime>
#include <dirent.h>
#include <sstream>
#include <string>
#include <stdexcept>
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namespace rocksdb {
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using namespace std;

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const string LDBCommand::ARG_DB = "db";
const string LDBCommand::ARG_HEX = "hex";
const string LDBCommand::ARG_KEY_HEX = "key_hex";
const string LDBCommand::ARG_VALUE_HEX = "value_hex";
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const string LDBCommand::ARG_TTL = "ttl";
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const string LDBCommand::ARG_TTL_START = "start_time";
const string LDBCommand::ARG_TTL_END = "end_time";
const string LDBCommand::ARG_TIMESTAMP = "timestamp";
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const string LDBCommand::ARG_FROM = "from";
const string LDBCommand::ARG_TO = "to";
const string LDBCommand::ARG_MAX_KEYS = "max_keys";
const string LDBCommand::ARG_BLOOM_BITS = "bloom_bits";
const string LDBCommand::ARG_COMPRESSION_TYPE = "compression_type";
const string LDBCommand::ARG_BLOCK_SIZE = "block_size";
const string LDBCommand::ARG_AUTO_COMPACTION = "auto_compaction";
const string LDBCommand::ARG_WRITE_BUFFER_SIZE = "write_buffer_size";
const string LDBCommand::ARG_FILE_SIZE = "file_size";
const string LDBCommand::ARG_CREATE_IF_MISSING = "create_if_missing";

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const char* LDBCommand::DELIM = " ==> ";
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LDBCommand* LDBCommand::InitFromCmdLineArgs(
  int argc,
  char** argv,
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  const Options& options
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) {
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  vector<string> args;
  for (int i = 1; i < argc; i++) {
    args.push_back(argv[i]);
  }
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  return InitFromCmdLineArgs(args, options);
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}

/**
 * Parse the command-line arguments and create the appropriate LDBCommand2
 * instance.
 * The command line arguments must be in the following format:
 * ./ldb --db=PATH_TO_DB [--commonOpt1=commonOpt1Val] ..
 *        COMMAND <PARAM1> <PARAM2> ... [-cmdSpecificOpt1=cmdSpecificOpt1Val] ..
 * This is similar to the command line format used by HBaseClientTool.
 * Command name is not included in args.
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 * Returns nullptr if the command-line cannot be parsed.
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 */
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LDBCommand* LDBCommand::InitFromCmdLineArgs(
  const vector<string>& args,
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  const Options& options
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) {
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  // --x=y command line arguments are added as x->y map entries.
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  map<string, string> option_map;
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  // Command-line arguments of the form --hex end up in this array as hex
  vector<string> flags;

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  // Everything other than option_map and flags. Represents commands
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  // and their parameters.  For eg: put key1 value1 go into this vector.
  vector<string> cmdTokens;

  const string OPTION_PREFIX = "--";

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  for (const auto& arg : args) {
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    if (arg[0] == '-' && arg[1] == '-'){
      vector<string> splits = stringSplit(arg, '=');
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      if (splits.size() == 2) {
        string optionKey = splits[0].substr(OPTION_PREFIX.size());
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        option_map[optionKey] = splits[1];
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      } else {
        string optionKey = splits[0].substr(OPTION_PREFIX.size());
        flags.push_back(optionKey);
      }
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    } else {
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      cmdTokens.push_back(arg);
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    }
  }

  if (cmdTokens.size() < 1) {
    fprintf(stderr, "Command not specified!");
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    return nullptr;
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  }

  string cmd = cmdTokens[0];
  vector<string> cmdParams(cmdTokens.begin()+1, cmdTokens.end());
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  LDBCommand* command = LDBCommand::SelectCommand(
    cmd,
    cmdParams,
    option_map,
    flags
  );

  if (command) {
    command->SetOptions(options);
  }
  return command;
}

LDBCommand* LDBCommand::SelectCommand(
    const std::string& cmd,
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    const vector<string>& cmdParams,
    const map<string, string>& option_map,
    const vector<string>& flags
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  ) {
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  if (cmd == GetCommand::Name()) {
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    return new GetCommand(cmdParams, option_map, flags);
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  } else if (cmd == PutCommand::Name()) {
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    return new PutCommand(cmdParams, option_map, flags);
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  } else if (cmd == BatchPutCommand::Name()) {
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    return new BatchPutCommand(cmdParams, option_map, flags);
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  } else if (cmd == ScanCommand::Name()) {
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    return new ScanCommand(cmdParams, option_map, flags);
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  } else if (cmd == DeleteCommand::Name()) {
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    return new DeleteCommand(cmdParams, option_map, flags);
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  } else if (cmd == ApproxSizeCommand::Name()) {
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    return new ApproxSizeCommand(cmdParams, option_map, flags);
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  } else if (cmd == DBQuerierCommand::Name()) {
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    return new DBQuerierCommand(cmdParams, option_map, flags);
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  } else if (cmd == CompactorCommand::Name()) {
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    return new CompactorCommand(cmdParams, option_map, flags);
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  } else if (cmd == WALDumperCommand::Name()) {
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    return new WALDumperCommand(cmdParams, option_map, flags);
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  } else if (cmd == ReduceDBLevelsCommand::Name()) {
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    return new ReduceDBLevelsCommand(cmdParams, option_map, flags);
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  } else if (cmd == ChangeCompactionStyleCommand::Name()) {
    return new ChangeCompactionStyleCommand(cmdParams, option_map, flags);
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  } else if (cmd == DBDumperCommand::Name()) {
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    return new DBDumperCommand(cmdParams, option_map, flags);
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  } else if (cmd == DBLoaderCommand::Name()) {
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    return new DBLoaderCommand(cmdParams, option_map, flags);
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  } else if (cmd == ManifestDumpCommand::Name()) {
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    return new ManifestDumpCommand(cmdParams, option_map, flags);
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  } else if (cmd == InternalDumpCommand::Name()) {
    return new InternalDumpCommand(cmdParams, option_map, flags);
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  }
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  return nullptr;
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}

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/**
 * Parses the specific integer option and fills in the value.
 * Returns true if the option is found.
 * Returns false if the option is not found or if there is an error parsing the
 * value.  If there is an error, the specified exec_state is also
 * updated.
 */
bool LDBCommand::ParseIntOption(const map<string, string>& options,
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                                const string& option, int& value,
                                LDBCommandExecuteResult& exec_state) {
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  map<string, string>::const_iterator itr = option_map_.find(option);
  if (itr != option_map_.end()) {
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    try {
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      value = stoi(itr->second);
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      return true;
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    } catch(const invalid_argument&) {
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      exec_state = LDBCommandExecuteResult::FAILED(option +
                      " has an invalid value.");
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    } catch(const out_of_range&) {
      exec_state = LDBCommandExecuteResult::FAILED(option +
                      " has a value out-of-range.");
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    }
  }
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  return false;
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}

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/**
 * Parses the specified option and fills in the value.
 * Returns true if the option is found.
 * Returns false otherwise.
 */
bool LDBCommand::ParseStringOption(const map<string, string>& options,
                                   const string& option, string* value) {
  auto itr = option_map_.find(option);
  if (itr != option_map_.end()) {
    *value = itr->second;
    return true;
  }
  return false;
}

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Options LDBCommand::PrepareOptionsForOpenDB() {
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  Options opt = options_;
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  opt.create_if_missing = false;
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  map<string, string>::const_iterator itr;

  int bits;
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  if (ParseIntOption(option_map_, ARG_BLOOM_BITS, bits, exec_state_)) {
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    if (bits > 0) {
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      opt.filter_policy = NewBloomFilterPolicy(bits);
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    } else {
      exec_state_ = LDBCommandExecuteResult::FAILED(ARG_BLOOM_BITS +
                      " must be > 0.");
    }
  }

  int block_size;
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  if (ParseIntOption(option_map_, ARG_BLOCK_SIZE, block_size, exec_state_)) {
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    if (block_size > 0) {
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      opt.block_size = block_size;
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    } else {
      exec_state_ = LDBCommandExecuteResult::FAILED(ARG_BLOCK_SIZE +
                      " must be > 0.");
    }
  }

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  itr = option_map_.find(ARG_AUTO_COMPACTION);
  if (itr != option_map_.end()) {
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    opt.disable_auto_compactions = ! StringToBool(itr->second);
  }

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  itr = option_map_.find(ARG_COMPRESSION_TYPE);
  if (itr != option_map_.end()) {
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    string comp = itr->second;
    if (comp == "no") {
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      opt.compression = kNoCompression;
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    } else if (comp == "snappy") {
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      opt.compression = kSnappyCompression;
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    } else if (comp == "zlib") {
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      opt.compression = kZlibCompression;
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    } else if (comp == "bzip2") {
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      opt.compression = kBZip2Compression;
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    } else {
      // Unknown compression.
      exec_state_ = LDBCommandExecuteResult::FAILED(
                      "Unknown compression level: " + comp);
    }
  }

  int write_buffer_size;
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  if (ParseIntOption(option_map_, ARG_WRITE_BUFFER_SIZE, write_buffer_size,
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        exec_state_)) {
    if (write_buffer_size > 0) {
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      opt.write_buffer_size = write_buffer_size;
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    } else {
      exec_state_ = LDBCommandExecuteResult::FAILED(ARG_WRITE_BUFFER_SIZE +
                      " must be > 0.");
    }
  }

  int file_size;
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  if (ParseIntOption(option_map_, ARG_FILE_SIZE, file_size, exec_state_)) {
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    if (file_size > 0) {
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      opt.target_file_size_base = file_size;
    } else {
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      exec_state_ = LDBCommandExecuteResult::FAILED(ARG_FILE_SIZE +
                      " must be > 0.");
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    }
  }

  return opt;
}

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bool LDBCommand::ParseKeyValue(const string& line, string* key, string* value,
                              bool is_key_hex, bool is_value_hex) {
  size_t pos = line.find(DELIM);
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  if (pos != string::npos) {
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    *key = line.substr(0, pos);
    *value = line.substr(pos + strlen(DELIM));
    if (is_key_hex) {
      *key = HexToString(*key);
    }
    if (is_value_hex) {
      *value = HexToString(*value);
    }
    return true;
  } else {
    return false;
  }
}
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/**
 * Make sure that ONLY the command-line options and flags expected by this
 * command are specified on the command-line.  Extraneous options are usually
 * the result of user error.
 * Returns true if all checks pass.  Else returns false, and prints an
 * appropriate error msg to stderr.
 */
bool LDBCommand::ValidateCmdLineOptions() {

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  for (map<string, string>::const_iterator itr = option_map_.begin();
        itr != option_map_.end(); itr++) {
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    if (find(valid_cmd_line_options_.begin(),
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          valid_cmd_line_options_.end(), itr->first) ==
          valid_cmd_line_options_.end()) {
      fprintf(stderr, "Invalid command-line option %s\n", itr->first.c_str());
      return false;
    }
  }
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  for (vector<string>::const_iterator itr = flags_.begin();
        itr != flags_.end(); itr++) {
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    if (find(valid_cmd_line_options_.begin(),
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          valid_cmd_line_options_.end(), *itr) ==
          valid_cmd_line_options_.end()) {
      fprintf(stderr, "Invalid command-line flag %s\n", itr->c_str());
      return false;
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    }
  }

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  if (!NoDBOpen() && option_map_.find(ARG_DB) == option_map_.end()) {
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    fprintf(stderr, "%s must be specified\n", ARG_DB.c_str());
    return false;
  }

  return true;
}

CompactorCommand::CompactorCommand(const vector<string>& params,
      const map<string, string>& options, const vector<string>& flags) :
    LDBCommand(options, flags, false,
               BuildCmdLineOptions({ARG_FROM, ARG_TO, ARG_HEX, ARG_KEY_HEX,
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                                    ARG_VALUE_HEX, ARG_TTL})),
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    null_from_(true), null_to_(true) {

  map<string, string>::const_iterator itr = options.find(ARG_FROM);
  if (itr != options.end()) {
    null_from_ = false;
    from_ = itr->second;
  }

  itr = options.find(ARG_TO);
  if (itr != options.end()) {
    null_to_ = false;
    to_ = itr->second;
  }

  if (is_key_hex_) {
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    if (!null_from_) {
      from_ = HexToString(from_);
    }
    if (!null_to_) {
      to_ = HexToString(to_);
    }
  }
}

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void CompactorCommand::Help(string& ret) {
  ret.append("  ");
  ret.append(CompactorCommand::Name());
  ret.append(HelpRangeCmdArgs());
  ret.append("\n");
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}

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void CompactorCommand::DoCommand() {
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  Slice* begin = nullptr;
  Slice* end = nullptr;
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  if (!null_from_) {
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    begin = new Slice(from_);
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  }
  if (!null_to_) {
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    end = new Slice(to_);
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  }

  db_->CompactRange(begin, end);
  exec_state_ = LDBCommandExecuteResult::SUCCEED("");

  delete begin;
  delete end;
}

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const string DBLoaderCommand::ARG_DISABLE_WAL = "disable_wal";
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const string DBLoaderCommand::ARG_BULK_LOAD = "bulk_load";
const string DBLoaderCommand::ARG_COMPACT = "compact";
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DBLoaderCommand::DBLoaderCommand(const vector<string>& params,
      const map<string, string>& options, const vector<string>& flags) :
    LDBCommand(options, flags, false,
               BuildCmdLineOptions({ARG_HEX, ARG_KEY_HEX, ARG_VALUE_HEX,
                                    ARG_FROM, ARG_TO, ARG_CREATE_IF_MISSING,
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                                    ARG_DISABLE_WAL, ARG_BULK_LOAD,
                                    ARG_COMPACT})),
    create_if_missing_(false), disable_wal_(false), bulk_load_(false),
    compact_(false) {
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  create_if_missing_ = IsFlagPresent(flags, ARG_CREATE_IF_MISSING);
  disable_wal_ = IsFlagPresent(flags, ARG_DISABLE_WAL);
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  bulk_load_ = IsFlagPresent(flags, ARG_BULK_LOAD);
  compact_ = IsFlagPresent(flags, ARG_COMPACT);
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}

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void DBLoaderCommand::Help(string& ret) {
  ret.append("  ");
  ret.append(DBLoaderCommand::Name());
  ret.append(" [--" + ARG_CREATE_IF_MISSING + "]");
  ret.append(" [--" + ARG_DISABLE_WAL + "]");
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  ret.append(" [--" + ARG_BULK_LOAD + "]");
  ret.append(" [--" + ARG_COMPACT + "]");
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  ret.append("\n");
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}

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Options DBLoaderCommand::PrepareOptionsForOpenDB() {
  Options opt = LDBCommand::PrepareOptionsForOpenDB();
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  opt.create_if_missing = create_if_missing_;
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  if (bulk_load_) {
    opt.PrepareForBulkLoad();
  }
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  return opt;
}

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void DBLoaderCommand::DoCommand() {
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  if (!db_) {
    return;
  }

  WriteOptions write_options;
  if (disable_wal_) {
    write_options.disableWAL = true;
  }

  int bad_lines = 0;
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  string line;
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  while (getline(cin, line, '\n')) {
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    string key;
    string value;
    if (ParseKeyValue(line, &key, &value, is_key_hex_, is_value_hex_)) {
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      db_->Put(write_options, Slice(key), Slice(value));
    } else if (0 == line.find("Keys in range:")) {
      // ignore this line
    } else if (0 == line.find("Created bg thread 0x")) {
      // ignore this line
    } else {
      bad_lines ++;
    }
  }
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  if (bad_lines > 0) {
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    cout << "Warning: " << bad_lines << " bad lines ignored." << endl;
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  }
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  if (compact_) {
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    db_->CompactRange(nullptr, nullptr);
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  }
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}

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// ----------------------------------------------------------------------------

const string ManifestDumpCommand::ARG_VERBOSE = "verbose";
const string ManifestDumpCommand::ARG_PATH    = "path";

void ManifestDumpCommand::Help(string& ret) {
  ret.append("  ");
  ret.append(ManifestDumpCommand::Name());
  ret.append(" [--" + ARG_VERBOSE + "]");
  ret.append(" [--" + ARG_PATH + "=<path_to_manifest_file>]");
  ret.append("\n");
}

ManifestDumpCommand::ManifestDumpCommand(const vector<string>& params,
      const map<string, string>& options, const vector<string>& flags) :
    LDBCommand(options, flags, false,
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               BuildCmdLineOptions({ARG_VERBOSE, ARG_PATH, ARG_HEX})),
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    verbose_(false),
    path_("")
{
  verbose_ = IsFlagPresent(flags, ARG_VERBOSE);

  map<string, string>::const_iterator itr = options.find(ARG_PATH);
  if (itr != options.end()) {
    path_ = itr->second;
    if (path_.empty()) {
      exec_state_ = LDBCommandExecuteResult::FAILED("--path: missing pathname");
    }
  }
}

void ManifestDumpCommand::DoCommand() {

  std::string manifestfile;

  if (!path_.empty()) {
    manifestfile = path_;
  } else {
    bool found = false;
    // We need to find the manifest file by searching the directory
    // containing the db for files of the form MANIFEST_[0-9]+
    DIR* d = opendir(db_path_.c_str());
    if (d == nullptr) {
      exec_state_ = LDBCommandExecuteResult::FAILED(
        db_path_ + " is not a directory");
      return;
    }
    struct dirent* entry;
    while ((entry = readdir(d)) != nullptr) {
      unsigned int match;
      unsigned long long num;
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      if (sscanf(entry->d_name,
                 "MANIFEST-%ln%ln",
                 (unsigned long*)&num,
                 (unsigned long*)&match)
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          && match == strlen(entry->d_name)) {
        if (!found) {
          manifestfile = db_path_ + "/" + std::string(entry->d_name);
          found = true;
        } else {
          exec_state_ = LDBCommandExecuteResult::FAILED(
            "Multiple MANIFEST files found; use --path to select one");
          return;
        }
      }
    }
    closedir(d);
  }

  if (verbose_) {
    printf("Processing Manifest file %s\n", manifestfile.c_str());
  }

  Options options;
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  EnvOptions sopt;
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  std::string file(manifestfile);
  std::string dbname("dummy");
  TableCache* tc = new TableCache(dbname, &options, sopt, 10);
  const InternalKeyComparator* cmp =
    new InternalKeyComparator(options.comparator);

  VersionSet* versions = new VersionSet(dbname, &options, sopt, tc, cmp);
  Status s = versions->DumpManifest(options, file, verbose_, is_key_hex_);
  if (!s.ok()) {
    printf("Error in processing file %s %s\n", manifestfile.c_str(),
           s.ToString().c_str());
  }
  if (verbose_) {
    printf("Processing Manifest file %s done\n", manifestfile.c_str());
  }
}

// ----------------------------------------------------------------------------

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string ReadableTime(int unixtime) {
  char time_buffer [80];
  time_t rawtime = unixtime;
  struct tm * timeinfo = localtime(&rawtime);
  strftime(time_buffer, 80, "%c", timeinfo);
  return string(time_buffer);
}

// This function only called when it's the sane case of >1 buckets in time-range
// Also called only when timekv falls between ttl_start and ttl_end provided
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void IncBucketCounts(vector<uint64_t>& bucket_counts, int ttl_start,
      int time_range, int bucket_size, int timekv, int num_buckets) {
  assert(time_range > 0 && timekv >= ttl_start && bucket_size > 0 &&
    timekv < (ttl_start + time_range) && num_buckets > 1);
  int bucket = (timekv - ttl_start) / bucket_size;
  bucket_counts[bucket]++;
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}

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void PrintBucketCounts(const vector<uint64_t>& bucket_counts, int ttl_start,
      int ttl_end, int bucket_size, int num_buckets) {
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  int time_point = ttl_start;
  for(int i = 0; i < num_buckets - 1; i++, time_point += bucket_size) {
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    fprintf(stdout, "Keys in range %s to %s : %lu\n",
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            ReadableTime(time_point).c_str(),
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            ReadableTime(time_point + bucket_size).c_str(),
            (unsigned long)bucket_counts[i]);
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  }
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  fprintf(stdout, "Keys in range %s to %s : %lu\n",
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          ReadableTime(time_point).c_str(),
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          ReadableTime(ttl_end).c_str(),
          (unsigned long)bucket_counts[num_buckets - 1]);
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}

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const string InternalDumpCommand::ARG_COUNT_ONLY = "count_only";
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const string InternalDumpCommand::ARG_COUNT_DELIM = "count_delim";
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const string InternalDumpCommand::ARG_STATS = "stats";
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const string InternalDumpCommand::ARG_INPUT_KEY_HEX = "input_key_hex";
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InternalDumpCommand::InternalDumpCommand(const vector<string>& params,
                                         const map<string, string>& options,
                                         const vector<string>& flags) :
    LDBCommand(options, flags, true,
               BuildCmdLineOptions({ ARG_HEX, ARG_KEY_HEX, ARG_VALUE_HEX,
                                     ARG_FROM, ARG_TO, ARG_MAX_KEYS,
599
                                     ARG_COUNT_ONLY, ARG_COUNT_DELIM, ARG_STATS,
600
                                     ARG_INPUT_KEY_HEX})),
601 602 603
    has_from_(false),
    has_to_(false),
    max_keys_(-1),
604
    delim_("."),
605
    count_only_(false),
606
    count_delim_(false),
607 608
    print_stats_(false),
    is_input_key_hex_(false) {
609 610 611 612 613

  has_from_ = ParseStringOption(options, ARG_FROM, &from_);
  has_to_ = ParseStringOption(options, ARG_TO, &to_);

  ParseIntOption(options, ARG_MAX_KEYS, max_keys_, exec_state_);
614 615 616 617 618 619 620 621 622
  map<string, string>::const_iterator itr = options.find(ARG_COUNT_DELIM);
  if (itr != options.end()) {
    delim_ = itr->second;
    count_delim_ = true;
   // fprintf(stdout,"delim = %c\n",delim_[0]);
  } else {
    count_delim_ = IsFlagPresent(flags, ARG_COUNT_DELIM);
    delim_=".";
  }
623 624 625

  print_stats_ = IsFlagPresent(flags, ARG_STATS);
  count_only_ = IsFlagPresent(flags, ARG_COUNT_ONLY);
626
  is_input_key_hex_ = IsFlagPresent(flags, ARG_INPUT_KEY_HEX);
627

628
  if (is_input_key_hex_) {
629 630 631 632 633 634 635 636 637 638 639 640 641
    if (has_from_) {
      from_ = HexToString(from_);
    }
    if (has_to_) {
      to_ = HexToString(to_);
    }
  }
}

void InternalDumpCommand::Help(string& ret) {
  ret.append("  ");
  ret.append(InternalDumpCommand::Name());
  ret.append(HelpRangeCmdArgs());
642
  ret.append(" [--" + ARG_INPUT_KEY_HEX + "]");
643 644
  ret.append(" [--" + ARG_MAX_KEYS + "=<N>]");
  ret.append(" [--" + ARG_COUNT_ONLY + "]");
645
  ret.append(" [--" + ARG_COUNT_DELIM + "=<char>]");
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  ret.append(" [--" + ARG_STATS + "]");
  ret.append("\n");
}

void InternalDumpCommand::DoCommand() {
  if (!db_) {
    return;
  }

  if (print_stats_) {
    string stats;
657
    if (db_->GetProperty("rocksdb.stats", &stats)) {
658 659 660 661 662 663 664 665 666 667
      fprintf(stdout, "%s\n", stats.c_str());
    }
  }

  // Cast as DBImpl to get internal iterator
  DBImpl* idb = dynamic_cast<DBImpl*>(db_);
  if (!idb) {
    exec_state_ = LDBCommandExecuteResult::FAILED("DB is not DBImpl");
    return;
  }
668 669 670 671
  string rtype1,rtype2,row,val;
  rtype2 = "";
  uint64_t c=0;
  uint64_t s1=0,s2=0;
672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702
  // Setup internal key iterator
  auto iter = unique_ptr<Iterator>(idb->TEST_NewInternalIterator());
  Status st = iter->status();
  if (!st.ok()) {
    exec_state_ = LDBCommandExecuteResult::FAILED("Iterator error:"
                                                  + st.ToString());
  }

  if (has_from_) {
    InternalKey ikey(from_, kMaxSequenceNumber, kValueTypeForSeek);
    iter->Seek(ikey.Encode());
  } else {
    iter->SeekToFirst();
  }

  long long count = 0;
  for (; iter->Valid(); iter->Next()) {
    ParsedInternalKey ikey;
    if (!ParseInternalKey(iter->key(), &ikey)) {
      fprintf(stderr, "Internal Key [%s] parse error!\n",
              iter->key().ToString(true /* in hex*/).data());
      // TODO: add error counter
      continue;
    }

    // If end marker was specified, we stop before it
    if (has_to_ && options_.comparator->Compare(ikey.user_key, to_) >= 0) {
      break;
    }

    ++count;
703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726
    int k;
    if (count_delim_) {
      rtype1 = "";
      s1=0;
      row = iter->key().ToString();
      val = iter->value().ToString();
      for(k=0;row[k]!='\x01' && row[k]!='\0';k++)
        s1++;
      for(k=0;val[k]!='\x01' && val[k]!='\0';k++)
        s1++;
      for(int j=0;row[j]!=delim_[0] && row[j]!='\0' && row[j]!='\x01';j++)
        rtype1+=row[j];
      if(rtype2.compare("") && rtype2.compare(rtype1)!=0) {
        fprintf(stdout,"%s => count:%lld\tsize:%lld\n",rtype2.c_str(),
            (long long)c,(long long)s2);
        c=1;
        s2=s1;
        rtype2 = rtype1;
      } else {
        c++;
        s2+=s1;
        rtype2=rtype1;
    }
  }
727

728
    if (!count_only_ && !count_delim_) {
729 730
      string key = ikey.DebugString(is_key_hex_);
      string value = iter->value().ToString(is_value_hex_);
731
      std::cout << key << " => " << value << "\n";
732 733 734 735 736
    }

    // Terminate if maximum number of keys have been dumped
    if (max_keys_ > 0 && count >= max_keys_) break;
  }
737 738 739 740
  if(count_delim_) {
    fprintf(stdout,"%s => count:%lld\tsize:%lld\n", rtype2.c_str(),
        (long long)c,(long long)s2);
  } else
741 742 743 744
  fprintf(stdout, "Internal keys in range: %lld\n", (long long) count);
}


745
const string DBDumperCommand::ARG_COUNT_ONLY = "count_only";
746
const string DBDumperCommand::ARG_COUNT_DELIM = "count_delim";
747
const string DBDumperCommand::ARG_STATS = "stats";
748
const string DBDumperCommand::ARG_TTL_BUCKET = "bucket";
749

750 751 752
DBDumperCommand::DBDumperCommand(const vector<string>& params,
      const map<string, string>& options, const vector<string>& flags) :
    LDBCommand(options, flags, true,
753 754
               BuildCmdLineOptions({ARG_TTL, ARG_HEX, ARG_KEY_HEX,
                                    ARG_VALUE_HEX, ARG_FROM, ARG_TO,
755 756 757 758
                                    ARG_MAX_KEYS, ARG_COUNT_ONLY,
                                    ARG_COUNT_DELIM, ARG_STATS, ARG_TTL_START,
                                    ARG_TTL_END, ARG_TTL_BUCKET,
                                    ARG_TIMESTAMP})),
759 760 761 762
    null_from_(true),
    null_to_(true),
    max_keys_(-1),
    count_only_(false),
763
    count_delim_(false),
764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780
    print_stats_(false) {

  map<string, string>::const_iterator itr = options.find(ARG_FROM);
  if (itr != options.end()) {
    null_from_ = false;
    from_ = itr->second;
  }

  itr = options.find(ARG_TO);
  if (itr != options.end()) {
    null_to_ = false;
    to_ = itr->second;
  }

  itr = options.find(ARG_MAX_KEYS);
  if (itr != options.end()) {
    try {
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      max_keys_ = stoi(itr->second);
    } catch(const invalid_argument&) {
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      exec_state_ = LDBCommandExecuteResult::FAILED(ARG_MAX_KEYS +
                        " has an invalid value");
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    } catch(const out_of_range&) {
      exec_state_ = LDBCommandExecuteResult::FAILED(ARG_MAX_KEYS +
787
                        " has a value out-of-range");
788 789
    }
  }
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  itr = options.find(ARG_COUNT_DELIM);
  if (itr != options.end()) {
    delim_ = itr->second;
    count_delim_ = true;
  } else {
    count_delim_ = IsFlagPresent(flags, ARG_COUNT_DELIM);
    delim_=".";
  }
798

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  print_stats_ = IsFlagPresent(flags, ARG_STATS);
  count_only_ = IsFlagPresent(flags, ARG_COUNT_ONLY);

  if (is_key_hex_) {
803 804 805 806 807 808 809 810 811
    if (!null_from_) {
      from_ = HexToString(from_);
    }
    if (!null_to_) {
      to_ = HexToString(to_);
    }
  }
}

812 813 814 815
void DBDumperCommand::Help(string& ret) {
  ret.append("  ");
  ret.append(DBDumperCommand::Name());
  ret.append(HelpRangeCmdArgs());
816
  ret.append(" [--" + ARG_TTL + "]");
817
  ret.append(" [--" + ARG_MAX_KEYS + "=<N>]");
818
  ret.append(" [--" + ARG_TIMESTAMP + "]");
819
  ret.append(" [--" + ARG_COUNT_ONLY + "]");
820
  ret.append(" [--" + ARG_COUNT_DELIM + "=<char>]");
821
  ret.append(" [--" + ARG_STATS + "]");
822
  ret.append(" [--" + ARG_TTL_BUCKET + "=<N>]");
823 824
  ret.append(" [--" + ARG_TTL_START + "=<N>:- is inclusive]");
  ret.append(" [--" + ARG_TTL_END + "=<N>:- is exclusive]");
825
  ret.append("\n");
826 827
}

828
void DBDumperCommand::DoCommand() {
829 830 831
  if (!db_) {
    return;
  }
832 833 834
  // Parse command line args
  uint64_t count = 0;
  if (print_stats_) {
835
    string stats;
836
    if (db_->GetProperty("rocksdb.stats", &stats)) {
837 838 839 840 841
      fprintf(stdout, "%s\n", stats.c_str());
    }
  }

  // Setup key iterator
842 843
  Iterator* iter = db_->NewIterator(ReadOptions());
  Status st = iter->status();
844 845 846 847 848 849 850 851 852 853 854 855
  if (!st.ok()) {
    exec_state_ = LDBCommandExecuteResult::FAILED("Iterator error."
        + st.ToString());
  }

  if (!null_from_) {
    iter->Seek(from_);
  } else {
    iter->SeekToFirst();
  }

  int max_keys = max_keys_;
856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874
  int ttl_start;
  if (!ParseIntOption(option_map_, ARG_TTL_START, ttl_start, exec_state_)) {
    ttl_start = DBWithTTL::kMinTimestamp; // TTL introduction time
  }
  int ttl_end;
  if (!ParseIntOption(option_map_, ARG_TTL_END, ttl_end, exec_state_)) {
    ttl_end = DBWithTTL::kMaxTimestamp; // Max time allowed by TTL feature
  }
  if (ttl_end < ttl_start) {
    fprintf(stderr, "Error: End time can't be less than start time\n");
    delete iter;
    return;
  }
  int time_range = ttl_end - ttl_start;
  int bucket_size;
  if (!ParseIntOption(option_map_, ARG_TTL_BUCKET, bucket_size, exec_state_) ||
      bucket_size <= 0) {
    bucket_size = time_range; // Will have just 1 bucket by default
  }
875 876 877 878 879 880
  //cretaing variables for row count of each type
  string rtype1,rtype2,row,val;
  rtype2 = "";
  uint64_t c=0;
  uint64_t s1=0,s2=0;

881
  // At this point, bucket_size=0 => time_range=0
882 883 884
  uint64_t num_buckets = (bucket_size >= time_range) ? 1 :
    ((time_range + bucket_size - 1) / bucket_size);
  vector<uint64_t> bucket_counts(num_buckets, 0);
885
  if (is_db_ttl_ && !count_only_ && timestamp_ && !count_delim_) {
886 887 888 889
    fprintf(stdout, "Dumping key-values from %s to %s\n",
            ReadableTime(ttl_start).c_str(), ReadableTime(ttl_end).c_str());
  }

890
  for (; iter->Valid(); iter->Next()) {
891
    int rawtime = 0;
892 893 894 895 896 897
    // If end marker was specified, we stop before it
    if (!null_to_ && (iter->key().ToString() >= to_))
      break;
    // Terminate if maximum number of keys have been dumped
    if (max_keys == 0)
      break;
898
    if (is_db_ttl_) {
899 900
      TtlIterator* it_ttl = dynamic_cast<TtlIterator*>(iter);
      assert(it_ttl);
901 902
      rawtime = it_ttl->timestamp();
      if (rawtime < ttl_start || rawtime >= ttl_end) {
903 904 905
        continue;
      }
    }
906 907 908
    if (max_keys > 0) {
      --max_keys;
    }
909
    if (is_db_ttl_ && num_buckets > 1) {
910
      IncBucketCounts(bucket_counts, ttl_start, time_range, bucket_size,
911 912
                      rawtime, num_buckets);
    }
913
    ++count;
914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937
    if (count_delim_) {
      rtype1 = "";
      row = iter->key().ToString();
      val = iter->value().ToString();
      s1 = row.size()+val.size();
      for(int j=0;row[j]!=delim_[0] && row[j]!='\0';j++)
        rtype1+=row[j];
      if(rtype2.compare("") && rtype2.compare(rtype1)!=0) {
        fprintf(stdout,"%s => count:%lld\tsize:%lld\n",rtype2.c_str(),
            (long long )c,(long long)s2);
        c=1;
        s2=s1;
        rtype2 = rtype1;
      } else {
          c++;
          s2+=s1;
          rtype2=rtype1;
      }

    }



    if (!count_only_ && !count_delim_) {
938 939 940
      if (is_db_ttl_ && timestamp_) {
        fprintf(stdout, "%s ", ReadableTime(rawtime).c_str());
      }
941
      string str = PrintKeyValue(iter->key().ToString(),
942 943
                                 iter->value().ToString(), is_key_hex_,
                                 is_value_hex_);
944
      fprintf(stdout, "%s\n", str.c_str());
945 946
    }
  }
947

948
  if (num_buckets > 1 && is_db_ttl_) {
949
    PrintBucketCounts(bucket_counts, ttl_start, ttl_end, bucket_size,
950
                      num_buckets);
951 952 953
  } else if(count_delim_) {
    fprintf(stdout,"%s => count:%lld\tsize:%lld\n",rtype2.c_str(),
        (long long )c,(long long)s2);
954 955 956
  } else {
    fprintf(stdout, "Keys in range: %lld\n", (long long) count);
  }
957 958 959 960
  // Clean up
  delete iter;
}

961 962
const string ReduceDBLevelsCommand::ARG_NEW_LEVELS = "new_levels";
const string  ReduceDBLevelsCommand::ARG_PRINT_OLD_LEVELS = "print_old_levels";
963

964 965 966 967 968 969 970
ReduceDBLevelsCommand::ReduceDBLevelsCommand(const vector<string>& params,
      const map<string, string>& options, const vector<string>& flags) :
    LDBCommand(options, flags, false,
               BuildCmdLineOptions({ARG_NEW_LEVELS, ARG_PRINT_OLD_LEVELS})),
    old_levels_(1 << 16),
    new_levels_(-1),
    print_old_levels_(false) {
971 972


973
  ParseIntOption(option_map_, ARG_NEW_LEVELS, new_levels_, exec_state_);
974
  print_old_levels_ = IsFlagPresent(flags, ARG_PRINT_OLD_LEVELS);
975 976 977

  if(new_levels_ <= 0) {
    exec_state_ = LDBCommandExecuteResult::FAILED(
978
           " Use --" + ARG_NEW_LEVELS + " to specify a new level number\n");
979 980 981
  }
}

982 983 984 985 986
vector<string> ReduceDBLevelsCommand::PrepareArgs(const string& db_path,
    int new_levels, bool print_old_level) {
  vector<string> ret;
  ret.push_back("reduce_levels");
  ret.push_back("--" + ARG_DB + "=" + db_path);
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  ret.push_back("--" + ARG_NEW_LEVELS + "=" + to_string(new_levels));
988
  if(print_old_level) {
989
    ret.push_back("--" + ARG_PRINT_OLD_LEVELS);
990 991 992 993
  }
  return ret;
}

994 995 996 997 998 999
void ReduceDBLevelsCommand::Help(string& ret) {
  ret.append("  ");
  ret.append(ReduceDBLevelsCommand::Name());
  ret.append(" --" + ARG_NEW_LEVELS + "=<New number of levels>");
  ret.append(" [--" + ARG_PRINT_OLD_LEVELS + "]");
  ret.append("\n");
1000 1001
}

1002 1003
Options ReduceDBLevelsCommand::PrepareOptionsForOpenDB() {
  Options opt = LDBCommand::PrepareOptionsForOpenDB();
1004
  opt.num_levels = old_levels_;
1005
  opt.max_bytes_for_level_multiplier_additional.resize(opt.num_levels, 1);
1006
  // Disable size compaction
1007
  opt.max_bytes_for_level_base = 1UL << 50;
1008 1009
  opt.max_bytes_for_level_multiplier = 1;
  opt.max_mem_compaction_level = 0;
1010 1011 1012
  return opt;
}

1013
Status ReduceDBLevelsCommand::GetOldNumOfLevels(Options& opt,
1014
    int* levels) {
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  EnvOptions soptions;
1016
  TableCache tc(db_path_, &opt, soptions, 10);
1017
  const InternalKeyComparator cmp(opt.comparator);
1018
  VersionSet versions(db_path_, &opt, soptions, &tc, &cmp);
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  std::vector<ColumnFamilyDescriptor> dummy;
  dummy.push_back(ColumnFamilyDescriptor());
1021 1022 1023
  // We rely the VersionSet::Recover to tell us the internal data structures
  // in the db. And the Recover() should never do any change
  // (like LogAndApply) to the manifest file.
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  Status st = versions.Recover(dummy);
1025 1026 1027 1028
  if (!st.ok()) {
    return st;
  }
  int max = -1;
1029
  for (int i = 0; i < versions.NumberLevels(); i++) {
1030
    if (versions.current()->NumLevelFiles(i)) {
1031 1032 1033 1034 1035 1036 1037 1038
      max = i;
    }
  }

  *levels = max + 1;
  return st;
}

1039
void ReduceDBLevelsCommand::DoCommand() {
1040 1041 1042 1043 1044 1045
  if (new_levels_ <= 1) {
    exec_state_ = LDBCommandExecuteResult::FAILED(
        "Invalid number of levels.\n");
    return;
  }

1046 1047
  Status st;
  Options opt = PrepareOptionsForOpenDB();
1048 1049 1050 1051 1052 1053 1054
  int old_level_num = -1;
  st = GetOldNumOfLevels(opt, &old_level_num);
  if (!st.ok()) {
    exec_state_ = LDBCommandExecuteResult::FAILED(st.ToString());
    return;
  }

1055
  if (print_old_levels_) {
1056 1057
    fprintf(stdout, "The old number of levels in use is %d\n", old_level_num);
  }
1058

1059 1060
  if (old_level_num <= new_levels_) {
    return;
1061 1062
  }

1063 1064 1065
  old_levels_ = old_level_num;

  OpenDB();
1066 1067 1068
  if (!db_) {
    return;
  }
1069
  // Compact the whole DB to put all files to the highest level.
1070
  fprintf(stdout, "Compacting the db...\n");
1071
  db_->CompactRange(nullptr, nullptr);
1072 1073
  CloseDB();

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  EnvOptions soptions;
1075
  st = VersionSet::ReduceNumberOfLevels(db_path_, &opt, soptions, new_levels_);
1076 1077 1078 1079 1080 1081
  if (!st.ok()) {
    exec_state_ = LDBCommandExecuteResult::FAILED(st.ToString());
    return;
  }
}

1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163
const string ChangeCompactionStyleCommand::ARG_OLD_COMPACTION_STYLE =
  "old_compaction_style";
const string ChangeCompactionStyleCommand::ARG_NEW_COMPACTION_STYLE =
  "new_compaction_style";

ChangeCompactionStyleCommand::ChangeCompactionStyleCommand(
      const vector<string>& params, const map<string, string>& options,
      const vector<string>& flags) :
    LDBCommand(options, flags, false,
               BuildCmdLineOptions({ARG_OLD_COMPACTION_STYLE,
                                    ARG_NEW_COMPACTION_STYLE})),
    old_compaction_style_(-1),
    new_compaction_style_(-1) {

  ParseIntOption(option_map_, ARG_OLD_COMPACTION_STYLE, old_compaction_style_,
    exec_state_);
  if (old_compaction_style_ != kCompactionStyleLevel &&
     old_compaction_style_ != kCompactionStyleUniversal) {
    exec_state_ = LDBCommandExecuteResult::FAILED(
      "Use --" + ARG_OLD_COMPACTION_STYLE + " to specify old compaction " +
      "style. Check ldb help for proper compaction style value.\n");
    return;
  }

  ParseIntOption(option_map_, ARG_NEW_COMPACTION_STYLE, new_compaction_style_,
    exec_state_);
  if (new_compaction_style_ != kCompactionStyleLevel &&
     new_compaction_style_ != kCompactionStyleUniversal) {
    exec_state_ = LDBCommandExecuteResult::FAILED(
      "Use --" + ARG_NEW_COMPACTION_STYLE + " to specify new compaction " +
      "style. Check ldb help for proper compaction style value.\n");
    return;
  }

  if (new_compaction_style_ == old_compaction_style_) {
    exec_state_ = LDBCommandExecuteResult::FAILED(
      "Old compaction style is the same as new compaction style. "
      "Nothing to do.\n");
    return;
  }

  if (old_compaction_style_ == kCompactionStyleUniversal &&
      new_compaction_style_ == kCompactionStyleLevel) {
    exec_state_ = LDBCommandExecuteResult::FAILED(
      "Convert from universal compaction to level compaction. "
      "Nothing to do.\n");
    return;
  }
}

void ChangeCompactionStyleCommand::Help(string& ret) {
  ret.append("  ");
  ret.append(ChangeCompactionStyleCommand::Name());
  ret.append(" --" + ARG_OLD_COMPACTION_STYLE + "=<Old compaction style: 0 " +
             "for level compaction, 1 for universal compaction>");
  ret.append(" --" + ARG_NEW_COMPACTION_STYLE + "=<New compaction style: 0 " +
             "for level compaction, 1 for universal compaction>");
  ret.append("\n");
}

Options ChangeCompactionStyleCommand::PrepareOptionsForOpenDB() {
  Options opt = LDBCommand::PrepareOptionsForOpenDB();

  if (old_compaction_style_ == kCompactionStyleLevel &&
      new_compaction_style_ == kCompactionStyleUniversal) {
    // In order to convert from level compaction to universal compaction, we
    // need to compact all data into a single file and move it to level 0.
    opt.disable_auto_compactions = true;
    opt.target_file_size_base = INT_MAX;
    opt.target_file_size_multiplier = 1;
    opt.max_bytes_for_level_base = INT_MAX;
    opt.max_bytes_for_level_multiplier = 1;
  }

  return opt;
}

void ChangeCompactionStyleCommand::DoCommand() {
  // print db stats before we have made any change
  std::string property;
  std::string files_per_level;
  for (int i = 0; i < db_->NumberLevels(); i++) {
1164
    db_->GetProperty("rocksdb.num-files-at-level" + NumberToString(i),
1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183
                     &property);

    // format print string
    char buf[100];
    snprintf(buf, sizeof(buf), "%s%s", (i ? "," : ""), property.c_str());
    files_per_level += buf;
  }
  fprintf(stdout, "files per level before compaction: %s\n",
          files_per_level.c_str());

  // manual compact into a single file and move the file to level 0
  db_->CompactRange(nullptr, nullptr,
                    true /* reduce level */,
                    0    /* reduce to level 0 */);

  // verify compaction result
  files_per_level = "";
  int num_files = 0;
  for (int i = 0; i < db_->NumberLevels(); i++) {
1184
    db_->GetProperty("rocksdb.num-files-at-level" + NumberToString(i),
1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213
                     &property);

    // format print string
    char buf[100];
    snprintf(buf, sizeof(buf), "%s%s", (i ? "," : ""), property.c_str());
    files_per_level += buf;

    num_files = atoi(property.c_str());

    // level 0 should have only 1 file
    if (i == 0 && num_files != 1) {
      exec_state_ = LDBCommandExecuteResult::FAILED("Number of db files at "
        "level 0 after compaction is " + std::to_string(num_files) +
        ", not 1.\n");
      return;
    }
    // other levels should have no file
    if (i > 0 && num_files != 0) {
      exec_state_ = LDBCommandExecuteResult::FAILED("Number of db files at "
        "level " + std::to_string(i) + " after compaction is " +
        std::to_string(num_files) + ", not 0.\n");
      return;
    }
  }

  fprintf(stdout, "files per level after compaction: %s\n",
          files_per_level.c_str());
}

1214 1215
class InMemoryHandler : public WriteBatch::Handler {
 public:
1216 1217 1218
  InMemoryHandler(stringstream& row, bool print_values) : Handler(),row_(row) {
    print_values_ = print_values;
  }
1219

1220 1221 1222 1223 1224 1225 1226 1227 1228
  void commonPutMerge(const Slice& key, const Slice& value) {
    string k = LDBCommand::StringToHex(key.ToString());
    if (print_values_) {
      string v = LDBCommand::StringToHex(value.ToString());
      row_ << k << " : ";
      row_ << v << " ";
    } else {
      row_ << k << " ";
    }
1229
  }
1230 1231 1232 1233

  virtual void Put(const Slice& key, const Slice& value) {
    row_ << "PUT : ";
    commonPutMerge(key, value);
1234 1235
  }

1236 1237 1238
  virtual void Merge(const Slice& key, const Slice& value) {
    row_ << "MERGE : ";
    commonPutMerge(key, value);
1239
  }
1240 1241 1242 1243

  virtual void Delete(const Slice& key) {
    row_ <<",DELETE : ";
    row_ << LDBCommand::StringToHex(key.ToString()) << " ";
1244 1245
  }

1246 1247
  virtual ~InMemoryHandler() { };

1248
 private:
1249 1250
  stringstream & row_;
  bool print_values_;
1251 1252
};

1253
const string WALDumperCommand::ARG_WAL_FILE = "walfile";
1254
const string WALDumperCommand::ARG_PRINT_VALUE = "print_value";
1255 1256 1257 1258 1259
const string WALDumperCommand::ARG_PRINT_HEADER = "header";

WALDumperCommand::WALDumperCommand(const vector<string>& params,
      const map<string, string>& options, const vector<string>& flags) :
    LDBCommand(options, flags, true,
1260 1261 1262
               BuildCmdLineOptions(
                {ARG_WAL_FILE, ARG_PRINT_HEADER, ARG_PRINT_VALUE})),
    print_header_(false), print_values_(false) {
1263

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Abhishek Kona 已提交
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  wal_file_.clear();
1265 1266 1267 1268

  map<string, string>::const_iterator itr = options.find(ARG_WAL_FILE);
  if (itr != options.end()) {
    wal_file_ = itr->second;
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  }
1270 1271


1272 1273
  print_header_ = IsFlagPresent(flags, ARG_PRINT_HEADER);
  print_values_ = IsFlagPresent(flags, ARG_PRINT_VALUE);
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Abhishek Kona 已提交
1274
  if (wal_file_.empty()) {
1275 1276
    exec_state_ = LDBCommandExecuteResult::FAILED(
                    "Argument " + ARG_WAL_FILE + " must be specified.");
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Abhishek Kona 已提交
1277 1278 1279
  }
}

1280 1281 1282 1283
void WALDumperCommand::Help(string& ret) {
  ret.append("  ");
  ret.append(WALDumperCommand::Name());
  ret.append(" --" + ARG_WAL_FILE + "=<write_ahead_log_file_path>");
1284 1285
  ret.append(" [--" + ARG_PRINT_HEADER + "] ");
  ret.append(" [--" + ARG_PRINT_VALUE + "] ");
1286
  ret.append("\n");
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Abhishek Kona 已提交
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}

1289
void WALDumperCommand::DoCommand() {
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Abhishek Kona 已提交
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  struct StdErrReporter : public log::Reader::Reporter {
    virtual void Corruption(size_t bytes, const Status& s) {
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      cerr<<"Corruption detected in log file "<<s.ToString()<<"\n";
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1293 1294 1295
    }
  };

1296
  unique_ptr<SequentialFile> file;
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  Env* env_ = Env::Default();
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1298
  EnvOptions soptions;
1299
  Status status = env_->NewSequentialFile(wal_file_, &file, soptions);
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  if (!status.ok()) {
    exec_state_ = LDBCommandExecuteResult::FAILED("Failed to open WAL file " +
      status.ToString());
  } else {
    StdErrReporter reporter;
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    log::Reader reader(move(file), &reporter, true, 0);
1306
    string scratch;
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    WriteBatch batch;
    Slice record;
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1309
    stringstream row;
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1310
    if (print_header_) {
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1311
      cout<<"Sequence,Count,ByteSize,Physical Offset,Key(s)";
1312
      if (print_values_) {
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1313
        cout << " : value ";
1314
      }
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      cout << "\n";
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Abhishek Kona 已提交
1316 1317
    }
    while(reader.ReadRecord(&record, &scratch)) {
1318
      row.str("");
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      if (record.size() < 12) {
        reporter.Corruption(
            record.size(), Status::Corruption("log record too small"));
      } else {
        WriteBatchInternal::SetContents(&batch, record);
        row<<WriteBatchInternal::Sequence(&batch)<<",";
        row<<WriteBatchInternal::Count(&batch)<<",";
1326
        row<<WriteBatchInternal::ByteSize(&batch)<<",";
1327
        row<<reader.LastRecordOffset()<<",";
1328
        InMemoryHandler handler(row, print_values_);
1329 1330
        batch.Iterate(&handler);
        row<<"\n";
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      }
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      cout<<row.str();
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    }
  }
}

1337 1338 1339

GetCommand::GetCommand(const vector<string>& params,
      const map<string, string>& options, const vector<string>& flags) :
1340 1341 1342
  LDBCommand(options, flags, true, BuildCmdLineOptions({ARG_TTL, ARG_HEX,
                                                        ARG_KEY_HEX,
                                                        ARG_VALUE_HEX})) {
1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359

  if (params.size() != 1) {
    exec_state_ = LDBCommandExecuteResult::FAILED(
                    "<key> must be specified for the get command");
  } else {
    key_ = params.at(0);
  }

  if (is_key_hex_) {
    key_ = HexToString(key_);
  }
}

void GetCommand::Help(string& ret) {
  ret.append("  ");
  ret.append(GetCommand::Name());
  ret.append(" <key>");
1360
  ret.append(" [--" + ARG_TTL + "]");
1361 1362 1363 1364 1365
  ret.append("\n");
}

void GetCommand::DoCommand() {
  string value;
1366
  Status st = db_->Get(ReadOptions(), key_, &value);
1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412
  if (st.ok()) {
    fprintf(stdout, "%s\n",
              (is_value_hex_ ? StringToHex(value) : value).c_str());
  } else {
    exec_state_ = LDBCommandExecuteResult::FAILED(st.ToString());
  }
}


ApproxSizeCommand::ApproxSizeCommand(const vector<string>& params,
      const map<string, string>& options, const vector<string>& flags) :
  LDBCommand(options, flags, true,
             BuildCmdLineOptions({ARG_HEX, ARG_KEY_HEX, ARG_VALUE_HEX,
                                  ARG_FROM, ARG_TO})) {

  if (options.find(ARG_FROM) != options.end()) {
    start_key_ = options.find(ARG_FROM)->second;
  } else {
    exec_state_ = LDBCommandExecuteResult::FAILED(ARG_FROM +
                    " must be specified for approxsize command");
    return;
  }

  if (options.find(ARG_TO) != options.end()) {
    end_key_ = options.find(ARG_TO)->second;
  } else {
    exec_state_ = LDBCommandExecuteResult::FAILED(ARG_TO +
                    " must be specified for approxsize command");
    return;
  }

  if (is_key_hex_) {
    start_key_ = HexToString(start_key_);
    end_key_ = HexToString(end_key_);
  }
}

void ApproxSizeCommand::Help(string& ret) {
  ret.append("  ");
  ret.append(ApproxSizeCommand::Name());
  ret.append(HelpRangeCmdArgs());
  ret.append("\n");
}

void ApproxSizeCommand::DoCommand() {

1413 1414
  Range ranges[1];
  ranges[0] = Range(start_key_, end_key_);
1415 1416
  uint64_t sizes[1];
  db_->GetApproximateSizes(ranges, 1, sizes);
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Kai Liu 已提交
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  fprintf(stdout, "%lu\n", (unsigned long)sizes[0]);
1418
  /* Weird that GetApproximateSizes() returns void, although documentation
1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429
   * says that it returns a Status object.
  if (!st.ok()) {
    exec_state_ = LDBCommandExecuteResult::FAILED(st.ToString());
  }
  */
}


BatchPutCommand::BatchPutCommand(const vector<string>& params,
      const map<string, string>& options, const vector<string>& flags) :
  LDBCommand(options, flags, false,
1430
             BuildCmdLineOptions({ARG_TTL, ARG_HEX, ARG_KEY_HEX, ARG_VALUE_HEX,
1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442
                                  ARG_CREATE_IF_MISSING})) {

  if (params.size() < 2) {
    exec_state_ = LDBCommandExecuteResult::FAILED(
        "At least one <key> <value> pair must be specified batchput.");
  } else if (params.size() % 2 != 0) {
    exec_state_ = LDBCommandExecuteResult::FAILED(
        "Equal number of <key>s and <value>s must be specified for batchput.");
  } else {
    for (size_t i = 0; i < params.size(); i += 2) {
      string key = params.at(i);
      string value = params.at(i+1);
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Mayank Agarwal 已提交
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      key_values_.push_back(pair<string, string>(
1444 1445 1446 1447 1448 1449 1450 1451 1452 1453
                    is_key_hex_ ? HexToString(key) : key,
                    is_value_hex_ ? HexToString(value) : value));
    }
  }
}

void BatchPutCommand::Help(string& ret) {
  ret.append("  ");
  ret.append(BatchPutCommand::Name());
  ret.append(" <key> <value> [<key> <value>] [..]");
1454
  ret.append(" [--" + ARG_TTL + "]");
1455 1456 1457 1458
  ret.append("\n");
}

void BatchPutCommand::DoCommand() {
1459
  WriteBatch batch;
1460

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Mayank Agarwal 已提交
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  for (vector<pair<string, string>>::const_iterator itr
1462 1463 1464
        = key_values_.begin(); itr != key_values_.end(); itr++) {
      batch.Put(itr->first, itr->second);
  }
1465
  Status st = db_->Write(WriteOptions(), &batch);
1466 1467 1468 1469 1470 1471 1472
  if (st.ok()) {
    fprintf(stdout, "OK\n");
  } else {
    exec_state_ = LDBCommandExecuteResult::FAILED(st.ToString());
  }
}

1473 1474
Options BatchPutCommand::PrepareOptionsForOpenDB() {
  Options opt = LDBCommand::PrepareOptionsForOpenDB();
1475 1476 1477 1478 1479 1480 1481 1482
  opt.create_if_missing = IsFlagPresent(flags_, ARG_CREATE_IF_MISSING);
  return opt;
}


ScanCommand::ScanCommand(const vector<string>& params,
      const map<string, string>& options, const vector<string>& flags) :
    LDBCommand(options, flags, true,
1483 1484 1485
               BuildCmdLineOptions({ARG_TTL, ARG_HEX, ARG_KEY_HEX, ARG_TO,
                                    ARG_VALUE_HEX, ARG_FROM, ARG_TIMESTAMP,
                                    ARG_MAX_KEYS, ARG_TTL_START, ARG_TTL_END})),
1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509
    start_key_specified_(false),
    end_key_specified_(false),
    max_keys_scanned_(-1) {

  map<string, string>::const_iterator itr = options.find(ARG_FROM);
  if (itr != options.end()) {
    start_key_ = itr->second;
    if (is_key_hex_) {
      start_key_ = HexToString(start_key_);
    }
    start_key_specified_ = true;
  }
  itr = options.find(ARG_TO);
  if (itr != options.end()) {
    end_key_ = itr->second;
    if (is_key_hex_) {
      end_key_ = HexToString(end_key_);
    }
    end_key_specified_ = true;
  }

  itr = options.find(ARG_MAX_KEYS);
  if (itr != options.end()) {
    try {
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Mayank Agarwal 已提交
1510 1511
      max_keys_scanned_ = stoi(itr->second);
    } catch(const invalid_argument&) {
1512 1513
      exec_state_ = LDBCommandExecuteResult::FAILED(ARG_MAX_KEYS +
                        " has an invalid value");
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Mayank Agarwal 已提交
1514 1515 1516
    } catch(const out_of_range&) {
      exec_state_ = LDBCommandExecuteResult::FAILED(ARG_MAX_KEYS +
                        " has a value out-of-range");
1517 1518 1519 1520 1521 1522 1523 1524
    }
  }
}

void ScanCommand::Help(string& ret) {
  ret.append("  ");
  ret.append(ScanCommand::Name());
  ret.append(HelpRangeCmdArgs());
1525 1526 1527
  ret.append(" [--" + ARG_TTL + "]");
  ret.append(" [--" + ARG_TIMESTAMP + "]");
  ret.append(" [--" + ARG_MAX_KEYS + "=<N>q] ");
1528 1529
  ret.append(" [--" + ARG_TTL_START + "=<N>:- is inclusive]");
  ret.append(" [--" + ARG_TTL_END + "=<N>:- is exclusive]");
1530 1531 1532 1533 1534 1535
  ret.append("\n");
}

void ScanCommand::DoCommand() {

  int num_keys_scanned = 0;
1536
  Iterator* it = db_->NewIterator(ReadOptions());
1537 1538 1539 1540 1541
  if (start_key_specified_) {
    it->Seek(start_key_);
  } else {
    it->SeekToFirst();
  }
1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558
  int ttl_start;
  if (!ParseIntOption(option_map_, ARG_TTL_START, ttl_start, exec_state_)) {
    ttl_start = DBWithTTL::kMinTimestamp; // TTL introduction time
  }
  int ttl_end;
  if (!ParseIntOption(option_map_, ARG_TTL_END, ttl_end, exec_state_)) {
    ttl_end = DBWithTTL::kMaxTimestamp; // Max time allowed by TTL feature
  }
  if (ttl_end < ttl_start) {
    fprintf(stderr, "Error: End time can't be less than start time\n");
    delete it;
    return;
  }
  if (is_db_ttl_ && timestamp_) {
    fprintf(stdout, "Scanning key-values from %s to %s\n",
            ReadableTime(ttl_start).c_str(), ReadableTime(ttl_end).c_str());
  }
1559 1560 1561 1562
  for ( ;
        it->Valid() && (!end_key_specified_ || it->key().ToString() < end_key_);
        it->Next()) {
    string key = it->key().ToString();
1563
    if (is_db_ttl_) {
1564 1565
      TtlIterator* it_ttl = dynamic_cast<TtlIterator*>(it);
      assert(it_ttl);
1566 1567
      int rawtime = it_ttl->timestamp();
      if (rawtime < ttl_start || rawtime >= ttl_end) {
1568 1569 1570 1571 1572 1573
        continue;
      }
      if (timestamp_) {
        fprintf(stdout, "%s ", ReadableTime(rawtime).c_str());
      }
    }
1574
    string value = it->value().ToString();
1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613
    fprintf(stdout, "%s : %s\n",
          (is_key_hex_ ? StringToHex(key) : key).c_str(),
          (is_value_hex_ ? StringToHex(value) : value).c_str()
        );
    num_keys_scanned++;
    if (max_keys_scanned_ >= 0 && num_keys_scanned >= max_keys_scanned_) {
      break;
    }
  }
  if (!it->status().ok()) {  // Check for any errors found during the scan
    exec_state_ = LDBCommandExecuteResult::FAILED(it->status().ToString());
  }
  delete it;
}


DeleteCommand::DeleteCommand(const vector<string>& params,
      const map<string, string>& options, const vector<string>& flags) :
  LDBCommand(options, flags, false,
             BuildCmdLineOptions({ARG_HEX, ARG_KEY_HEX, ARG_VALUE_HEX})) {

  if (params.size() != 1) {
    exec_state_ = LDBCommandExecuteResult::FAILED(
                    "KEY must be specified for the delete command");
  } else {
    key_ = params.at(0);
    if (is_key_hex_) {
      key_ = HexToString(key_);
    }
  }
}

void DeleteCommand::Help(string& ret) {
  ret.append("  ");
  ret.append(DeleteCommand::Name() + " <key>");
  ret.append("\n");
}

void DeleteCommand::DoCommand() {
1614
  Status st = db_->Delete(WriteOptions(), key_);
1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625
  if (st.ok()) {
    fprintf(stdout, "OK\n");
  } else {
    exec_state_ = LDBCommandExecuteResult::FAILED(st.ToString());
  }
}


PutCommand::PutCommand(const vector<string>& params,
      const map<string, string>& options, const vector<string>& flags) :
  LDBCommand(options, flags, false,
1626
             BuildCmdLineOptions({ARG_TTL, ARG_HEX, ARG_KEY_HEX, ARG_VALUE_HEX,
1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649
                                  ARG_CREATE_IF_MISSING})) {

  if (params.size() != 2) {
    exec_state_ = LDBCommandExecuteResult::FAILED(
                    "<key> and <value> must be specified for the put command");
  } else {
    key_ = params.at(0);
    value_ = params.at(1);
  }

  if (is_key_hex_) {
    key_ = HexToString(key_);
  }

  if (is_value_hex_) {
    value_ = HexToString(value_);
  }
}

void PutCommand::Help(string& ret) {
  ret.append("  ");
  ret.append(PutCommand::Name());
  ret.append(" <key> <value> ");
1650
  ret.append(" [--" + ARG_TTL + "]");
1651 1652 1653 1654
  ret.append("\n");
}

void PutCommand::DoCommand() {
1655
  Status st = db_->Put(WriteOptions(), key_, value_);
1656 1657 1658 1659 1660 1661 1662
  if (st.ok()) {
    fprintf(stdout, "OK\n");
  } else {
    exec_state_ = LDBCommandExecuteResult::FAILED(st.ToString());
  }
}

1663 1664
Options PutCommand::PrepareOptionsForOpenDB() {
  Options opt = LDBCommand::PrepareOptionsForOpenDB();
1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677
  opt.create_if_missing = IsFlagPresent(flags_, ARG_CREATE_IF_MISSING);
  return opt;
}


const char* DBQuerierCommand::HELP_CMD = "help";
const char* DBQuerierCommand::GET_CMD = "get";
const char* DBQuerierCommand::PUT_CMD = "put";
const char* DBQuerierCommand::DELETE_CMD = "delete";

DBQuerierCommand::DBQuerierCommand(const vector<string>& params,
    const map<string, string>& options, const vector<string>& flags) :
  LDBCommand(options, flags, false,
1678 1679
             BuildCmdLineOptions({ARG_TTL, ARG_HEX, ARG_KEY_HEX,
                                  ARG_VALUE_HEX})) {
1680 1681 1682 1683 1684 1685

}

void DBQuerierCommand::Help(string& ret) {
  ret.append("  ");
  ret.append(DBQuerierCommand::Name());
1686
  ret.append(" [--" + ARG_TTL + "]");
1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697
  ret.append("\n");
  ret.append("    Starts a REPL shell.  Type help for list of available "
             "commands.");
  ret.append("\n");
}

void DBQuerierCommand::DoCommand() {
  if (!db_) {
    return;
  }

1698 1699
  ReadOptions read_options;
  WriteOptions write_options;
1700 1701 1702 1703

  string line;
  string key;
  string value;
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Mayank Agarwal 已提交
1704
  while (getline(cin, line, '\n')) {
1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750

    // Parse line into vector<string>
    vector<string> tokens;
    size_t pos = 0;
    while (true) {
      size_t pos2 = line.find(' ', pos);
      if (pos2 == string::npos) {
        break;
      }
      tokens.push_back(line.substr(pos, pos2-pos));
      pos = pos2 + 1;
    }
    tokens.push_back(line.substr(pos));

    const string& cmd = tokens[0];

    if (cmd == HELP_CMD) {
      fprintf(stdout,
              "get <key>\n"
              "put <key> <value>\n"
              "delete <key>\n");
    } else if (cmd == DELETE_CMD && tokens.size() == 2) {
      key = (is_key_hex_ ? HexToString(tokens[1]) : tokens[1]);
      db_->Delete(write_options, Slice(key));
      fprintf(stdout, "Successfully deleted %s\n", tokens[1].c_str());
    } else if (cmd == PUT_CMD && tokens.size() == 3) {
      key = (is_key_hex_ ? HexToString(tokens[1]) : tokens[1]);
      value = (is_value_hex_ ? HexToString(tokens[2]) : tokens[2]);
      db_->Put(write_options, Slice(key), Slice(value));
      fprintf(stdout, "Successfully put %s %s\n",
              tokens[1].c_str(), tokens[2].c_str());
    } else if (cmd == GET_CMD && tokens.size() == 2) {
      key = (is_key_hex_ ? HexToString(tokens[1]) : tokens[1]);
      if (db_->Get(read_options, Slice(key), &value).ok()) {
        fprintf(stdout, "%s\n", PrintKeyValue(key, value,
              is_key_hex_, is_value_hex_).c_str());
      } else {
        fprintf(stdout, "Not found %s\n", tokens[1].c_str());
      }
    } else {
      fprintf(stdout, "Unknown command %s\n", line.c_str());
    }
  }
}


1751
}