61f1baaedf
Summary: Scan and Dump commands in ldb use iterator. We need to also print timestamp for ttl databases for debugging. For this I create a TtlIterator class pointer in these functions and assign it the value of Iterator pointer which actually points to t TtlIterator object, and access the new function ValueWithTS which can return TS also. Buckets feature for dump command: gives a count of different key-values in the specified time-range distributed across the time-range partitioned according to bucket-size. start_time and end_time are specified in unixtimestamp and bucket in seconds on the user-commandline Have commented out 3 ines from ldb_test.py so that the test does not break right now. It breaks because timestamp is also printed now and I have to look at wildcards in python to compare properly. Test Plan: python tools/ldb_test.py Reviewers: vamsi, dhruba, haobo, sheki Reviewed By: vamsi CC: leveldb Differential Revision: https://reviews.facebook.net/D11403
99 lines
2.9 KiB
C++
99 lines
2.9 KiB
C++
// Copyright 2008-present Facebook. All Rights Reserved.
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#include "leveldb/ldb_tool.h"
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#include "util/ldb_cmd.h"
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namespace leveldb {
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class LDBCommandRunner {
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public:
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static void PrintHelp(const char* exec_name) {
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string ret;
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ret.append("ldb - LevelDB Tool");
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ret.append("\n\n");
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ret.append("commands MUST specify --" + LDBCommand::ARG_DB +
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"=<full_path_to_db_directory> when necessary\n");
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ret.append("\n");
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ret.append("The following optional parameters control if keys/values are "
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"input/output as hex or as plain strings:\n");
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ret.append(" --" + LDBCommand::ARG_KEY_HEX +
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" : Keys are input/output as hex\n");
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ret.append(" --" + LDBCommand::ARG_VALUE_HEX +
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" : Values are input/output as hex\n");
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ret.append(" --" + LDBCommand::ARG_HEX +
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" : Both keys and values are input/output as hex\n");
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ret.append("\n");
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ret.append("The following optional parameters control the database "
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"internals:\n");
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ret.append(" --" + LDBCommand::ARG_TTL +
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" with 'put','get','scan','dump','query','batchput'"
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" : DB supports ttl and value is internally timestamp-suffixed\n");
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ret.append(" --" + LDBCommand::ARG_BLOOM_BITS + "=<int,e.g.:14>\n");
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ret.append(" --" + LDBCommand::ARG_COMPRESSION_TYPE +
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"=<no|snappy|zlib|bzip2>\n");
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ret.append(" --" + LDBCommand::ARG_BLOCK_SIZE +
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"=<block_size_in_bytes>\n");
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ret.append(" --" + LDBCommand::ARG_AUTO_COMPACTION + "=<true|false>\n");
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ret.append(" --" + LDBCommand::ARG_WRITE_BUFFER_SIZE +
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"=<int,e.g.:4194304>\n");
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ret.append(" --" + LDBCommand::ARG_FILE_SIZE + "=<int,e.g.:2097152>\n");
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ret.append("\n\n");
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ret.append("Data Access Commands:\n");
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PutCommand::Help(ret);
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GetCommand::Help(ret);
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BatchPutCommand::Help(ret);
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ScanCommand::Help(ret);
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DeleteCommand::Help(ret);
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DBQuerierCommand::Help(ret);
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ApproxSizeCommand::Help(ret);
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ret.append("\n\n");
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ret.append("Admin Commands:\n");
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WALDumperCommand::Help(ret);
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CompactorCommand::Help(ret);
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ReduceDBLevelsCommand::Help(ret);
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DBDumperCommand::Help(ret);
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DBLoaderCommand::Help(ret);
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ManifestDumpCommand::Help(ret);
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fprintf(stderr, "%s\n", ret.c_str());
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}
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static void RunCommand(int argc, char** argv, Options options) {
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if (argc <= 2) {
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PrintHelp(argv[0]);
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exit(1);
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}
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LDBCommand* cmdObj = LDBCommand::InitFromCmdLineArgs(argc, argv, options);
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if (cmdObj == nullptr) {
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fprintf(stderr, "Unknown command\n");
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PrintHelp(argv[0]);
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exit(1);
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}
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if (!cmdObj->ValidateCmdLineOptions()) {
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exit(1);
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}
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cmdObj->Run();
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LDBCommandExecuteResult ret = cmdObj->GetExecuteState();
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fprintf(stderr, "%s\n", ret.ToString().c_str());
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delete cmdObj;
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exit(ret.IsFailed());
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}
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};
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void LDBTool::Run(int argc, char** argv, Options options) {
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LDBCommandRunner::RunCommand(argc, argv, options);
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}
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} // namespace leveldb
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