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9a72cf1a61
Summary: As titled. For dumping wal files, since a mapping from column family id to the user comparator object is needed to print the timestamp in human readable format, option `[--db=<db_path>]` is added to `dump_wal` command to allow the user to choose to optionally open the DB as read only instance and dump the wal file with better timestamp formatting. Pull Request resolved: https://github.com/facebook/rocksdb/pull/12690 Test Plan: Manually tested dump_wal: [dump a wal file specified with --walfile] ``` >> ./ldb --walfile=$TEST_DB/000004.log dump_wal --print_value >>1,1,28,13,PUT(0) : 0x666F6F0100000000000000 : 0x7631 (Column family id: [0] contained in WAL are not opened in DB. Applied default hex formatting for user key. Specify --db=<db_path> to open DB for better user key formatting if it contains timestamp.) ``` [dump with --db specified for better timestamp formatting] ``` >> ./ldb --walfile=$TEST_DB/000004.log dump_wal --db=$TEST_DB --print_value >> 1,1,28,13,PUT(0) : 0x666F6F|timestamp:1 : 0x7631 ``` dump: [dump a file specified with --path] ``` >>./ldb --path=/tmp/rocksdbtest-501/column_family_test_75359_17910784957761284041/000004.log dump Sequence,Count,ByteSize,Physical Offset,Key(s) : value 1,1,28,13,PUT(0) : 0x666F6F0100000000000000 : 0x7631 (Column family id: [0] contained in WAL are not opened in DB. Applied default hex formatting for user key. Specify --db=<db_path> to open DB for better user key formatting if it contains timestamp.) ``` [dump db specified with --db] ``` >> ./ldb --db=/tmp/rocksdbtest-501/column_family_test_75359_17910784957761284041 dump >> foo|timestamp:1 ==> v1 Keys in range: 1 ``` idump ``` ./ldb --db=$TEST_DB idump 'foo|timestamp:1' seq:1, type:1 => v1 Internal keys in range: 1 ``` Reviewed By: ltamasi Differential Revision: D57755382 Pulled By: jowlyzhang fbshipit-source-id: a0a2ef80c92801cbf7bfccc64769c1191824362e
91 lines
2.7 KiB
C++
91 lines
2.7 KiB
C++
// Copyright (c) Meta Platforms, Inc. and affiliates.
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//
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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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#pragma once
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#include <unordered_set>
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#include <vector>
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#include "rocksdb/slice.h"
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#include "rocksdb/status.h"
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#include "rocksdb/write_batch.h"
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namespace ROCKSDB_NAMESPACE {
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// ColumnFamilyCollector is a write batch handler which does nothing
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// except recording unique column family IDs
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class ColumnFamilyCollector : public WriteBatch::Handler {
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std::unordered_set<uint32_t> column_family_ids_;
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Status AddColumnFamilyId(uint32_t column_family_id) {
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column_family_ids_.insert(column_family_id);
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return Status::OK();
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}
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public:
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explicit ColumnFamilyCollector() {}
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~ColumnFamilyCollector() override {}
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Status PutCF(uint32_t column_family_id, const Slice&, const Slice&) override {
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return AddColumnFamilyId(column_family_id);
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}
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Status PutEntityCF(uint32_t column_family_id, const Slice&,
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const Slice&) override {
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return AddColumnFamilyId(column_family_id);
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}
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Status TimedPutCF(uint32_t column_family_id, const Slice&, const Slice&,
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uint64_t) override {
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return AddColumnFamilyId(column_family_id);
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}
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Status DeleteCF(uint32_t column_family_id, const Slice&) override {
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return AddColumnFamilyId(column_family_id);
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}
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Status SingleDeleteCF(uint32_t column_family_id, const Slice&) override {
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return AddColumnFamilyId(column_family_id);
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}
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Status DeleteRangeCF(uint32_t column_family_id, const Slice&,
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const Slice&) override {
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return AddColumnFamilyId(column_family_id);
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}
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Status MergeCF(uint32_t column_family_id, const Slice&,
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const Slice&) override {
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return AddColumnFamilyId(column_family_id);
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}
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Status PutBlobIndexCF(uint32_t column_family_id, const Slice&,
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const Slice&) override {
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return AddColumnFamilyId(column_family_id);
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}
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Status MarkBeginPrepare(bool) override { return Status::OK(); }
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Status MarkEndPrepare(const Slice&) override { return Status::OK(); }
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Status MarkRollback(const Slice&) override { return Status::OK(); }
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Status MarkCommit(const Slice&) override { return Status::OK(); }
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Status MarkCommitWithTimestamp(const Slice&, const Slice&) override {
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return Status::OK();
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}
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Status MarkNoop(bool) override { return Status::OK(); }
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const std::unordered_set<uint32_t>& column_families() const {
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return column_family_ids_;
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}
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};
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Status CollectColumnFamilyIdsFromWriteBatch(
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const WriteBatch& batch, std::vector<uint32_t>* column_family_ids);
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} // namespace ROCKSDB_NAMESPACE
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