mirror of
https://github.com/facebook/rocksdb.git
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1bb4928da9
Summary: Added these events: * Recovery start, finish and also when recovery creates a file * Trivial move * Compaction start, finish and when compaction creates a file * Flush start, finish Also includes small fix to EventLogger Also added option ROCKSDB_PRINT_EVENTS_TO_STDOUT which is useful when we debug things. I've spent far too much time chasing LOG files. Still didn't get sst table properties in JSON. They are written very deeply into the stack. I'll address in separate diff. TODO: * Write specification. Let's first use this for a while and figure out what's good data to put here, too. After that we'll write spec * Write tools that parse and analyze LOGs. This can be in python or go. Good intern task. Test Plan: Ran db_bench with ROCKSDB_PRINT_EVENTS_TO_STDOUT. Here's the output: https://phabricator.fb.com/P19811976 Reviewers: sdong, yhchiang, rven, MarkCallaghan, kradhakrishnan, anthony Reviewed By: anthony Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D37521
47 lines
1.3 KiB
C++
47 lines
1.3 KiB
C++
// Copyright (c) 2014, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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#ifndef __STDC_FORMAT_MACROS
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#define __STDC_FORMAT_MACROS
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#endif
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#include "util/event_logger.h"
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#include <inttypes.h>
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#include <cassert>
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#include <sstream>
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#include <string>
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#include "util/string_util.h"
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namespace rocksdb {
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const char* kEventLoggerPrefix = "EVENT_LOG_v1";
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EventLoggerStream::EventLoggerStream(Logger* logger)
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: logger_(logger), log_buffer_(nullptr), json_writter_(nullptr) {}
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EventLoggerStream::EventLoggerStream(LogBuffer* log_buffer)
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: logger_(nullptr), log_buffer_(log_buffer), json_writter_(nullptr) {}
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EventLoggerStream::~EventLoggerStream() {
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if (json_writter_) {
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json_writter_->EndObject();
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#ifdef ROCKSDB_PRINT_EVENTS_TO_STDOUT
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printf("%s\n", json_writter_->Get().c_str());
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#else
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if (logger_) {
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Log(logger_, "%s %s", kEventLoggerPrefix, json_writter_->Get().c_str());
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} else if (log_buffer_) {
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LogToBuffer(log_buffer_, "%s %s", kEventLoggerPrefix,
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json_writter_->Get().c_str());
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}
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#endif
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delete json_writter_;
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}
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}
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} // namespace rocksdb
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