0afc8bc29a
Summary: Originally: https://github.com/facebook/rocksdb/pull/87/files I'm taking over to apply some finishing touches Test Plan: will add tests Reviewers: dhruba, haobo, sdong, yhchiang, ljin Reviewed By: yhchiang CC: leveldb Differential Revision: https://reviews.facebook.net/D18315
267 lines
8.4 KiB
C++
267 lines
8.4 KiB
C++
// 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.
|
|
#include "table/meta_blocks.h"
|
|
|
|
#include <map>
|
|
#include <string>
|
|
|
|
#include "rocksdb/table.h"
|
|
#include "rocksdb/table_properties.h"
|
|
#include "table/block.h"
|
|
#include "table/format.h"
|
|
#include "util/coding.h"
|
|
|
|
namespace rocksdb {
|
|
|
|
MetaIndexBuilder::MetaIndexBuilder()
|
|
: meta_index_block_(
|
|
new BlockBuilder(1 /* restart interval */, BytewiseComparator())) {
|
|
}
|
|
|
|
void MetaIndexBuilder::Add(const std::string& key,
|
|
const BlockHandle& handle) {
|
|
std::string handle_encoding;
|
|
handle.EncodeTo(&handle_encoding);
|
|
meta_block_handles_.insert({key, handle_encoding});
|
|
}
|
|
|
|
Slice MetaIndexBuilder::Finish() {
|
|
for (const auto& metablock : meta_block_handles_) {
|
|
meta_index_block_->Add(metablock.first, metablock.second);
|
|
}
|
|
return meta_index_block_->Finish();
|
|
}
|
|
|
|
PropertyBlockBuilder::PropertyBlockBuilder()
|
|
: properties_block_(
|
|
new BlockBuilder(1 /* restart interval */, BytewiseComparator())) {
|
|
}
|
|
|
|
void PropertyBlockBuilder::Add(const std::string& name,
|
|
const std::string& val) {
|
|
props_.insert({name, val});
|
|
}
|
|
|
|
void PropertyBlockBuilder::Add(const std::string& name, uint64_t val) {
|
|
assert(props_.find(name) == props_.end());
|
|
|
|
std::string dst;
|
|
PutVarint64(&dst, val);
|
|
|
|
Add(name, dst);
|
|
}
|
|
|
|
void PropertyBlockBuilder::Add(
|
|
const UserCollectedProperties& user_collected_properties) {
|
|
for (const auto& prop : user_collected_properties) {
|
|
Add(prop.first, prop.second);
|
|
}
|
|
}
|
|
|
|
void PropertyBlockBuilder::AddTableProperty(const TableProperties& props) {
|
|
Add(TablePropertiesNames::kRawKeySize, props.raw_key_size);
|
|
Add(TablePropertiesNames::kRawValueSize, props.raw_value_size);
|
|
Add(TablePropertiesNames::kDataSize, props.data_size);
|
|
Add(TablePropertiesNames::kIndexSize, props.index_size);
|
|
Add(TablePropertiesNames::kNumEntries, props.num_entries);
|
|
Add(TablePropertiesNames::kNumDataBlocks, props.num_data_blocks);
|
|
Add(TablePropertiesNames::kFilterSize, props.filter_size);
|
|
Add(TablePropertiesNames::kFormatVersion, props.format_version);
|
|
Add(TablePropertiesNames::kFixedKeyLen, props.fixed_key_len);
|
|
|
|
if (!props.filter_policy_name.empty()) {
|
|
Add(TablePropertiesNames::kFilterPolicy,
|
|
props.filter_policy_name);
|
|
}
|
|
}
|
|
|
|
Slice PropertyBlockBuilder::Finish() {
|
|
for (const auto& prop : props_) {
|
|
properties_block_->Add(prop.first, prop.second);
|
|
}
|
|
|
|
return properties_block_->Finish();
|
|
}
|
|
|
|
void LogPropertiesCollectionError(
|
|
Logger* info_log, const std::string& method, const std::string& name) {
|
|
assert(method == "Add" || method == "Finish");
|
|
|
|
std::string msg =
|
|
"[Warning] encountered error when calling TablePropertiesCollector::" +
|
|
method + "() with collector name: " + name;
|
|
Log(info_log, "%s", msg.c_str());
|
|
}
|
|
|
|
bool NotifyCollectTableCollectorsOnAdd(
|
|
const Slice& key,
|
|
const Slice& value,
|
|
const Options::TablePropertiesCollectors& collectors,
|
|
Logger* info_log) {
|
|
bool all_succeeded = true;
|
|
for (auto collector : collectors) {
|
|
Status s = collector->Add(key, value);
|
|
all_succeeded = all_succeeded && s.ok();
|
|
if (!s.ok()) {
|
|
LogPropertiesCollectionError(info_log, "Add" /* method */,
|
|
collector->Name());
|
|
}
|
|
}
|
|
return all_succeeded;
|
|
}
|
|
|
|
bool NotifyCollectTableCollectorsOnFinish(
|
|
const Options::TablePropertiesCollectors& collectors,
|
|
Logger* info_log,
|
|
PropertyBlockBuilder* builder) {
|
|
bool all_succeeded = true;
|
|
for (auto collector : collectors) {
|
|
UserCollectedProperties user_collected_properties;
|
|
Status s = collector->Finish(&user_collected_properties);
|
|
|
|
all_succeeded = all_succeeded && s.ok();
|
|
if (!s.ok()) {
|
|
LogPropertiesCollectionError(info_log, "Finish" /* method */,
|
|
collector->Name());
|
|
} else {
|
|
builder->Add(user_collected_properties);
|
|
}
|
|
}
|
|
|
|
return all_succeeded;
|
|
}
|
|
|
|
Status ReadProperties(const Slice &handle_value, RandomAccessFile *file,
|
|
const Footer &footer, Env *env, Logger *logger,
|
|
TableProperties **table_properties) {
|
|
assert(table_properties);
|
|
|
|
Slice v = handle_value;
|
|
BlockHandle handle;
|
|
if (!handle.DecodeFrom(&v).ok()) {
|
|
return Status::InvalidArgument("Failed to decode properties block handle");
|
|
}
|
|
|
|
BlockContents block_contents;
|
|
ReadOptions read_options;
|
|
read_options.verify_checksums = false;
|
|
Status s = ReadBlockContents(file, footer, read_options, handle,
|
|
&block_contents, env, false);
|
|
|
|
if (!s.ok()) {
|
|
return s;
|
|
}
|
|
|
|
Block properties_block(block_contents);
|
|
std::unique_ptr<Iterator> iter(
|
|
properties_block.NewIterator(BytewiseComparator()));
|
|
|
|
auto new_table_properties = new TableProperties();
|
|
// All pre-defined properties of type uint64_t
|
|
std::unordered_map<std::string, uint64_t*> predefined_uint64_properties = {
|
|
{TablePropertiesNames::kDataSize, &new_table_properties->data_size},
|
|
{TablePropertiesNames::kIndexSize, &new_table_properties->index_size},
|
|
{TablePropertiesNames::kFilterSize, &new_table_properties->filter_size},
|
|
{TablePropertiesNames::kRawKeySize, &new_table_properties->raw_key_size},
|
|
{TablePropertiesNames::kRawValueSize,
|
|
&new_table_properties->raw_value_size},
|
|
{TablePropertiesNames::kNumDataBlocks,
|
|
&new_table_properties->num_data_blocks},
|
|
{TablePropertiesNames::kNumEntries, &new_table_properties->num_entries},
|
|
{TablePropertiesNames::kFormatVersion,
|
|
&new_table_properties->format_version},
|
|
{TablePropertiesNames::kFixedKeyLen,
|
|
&new_table_properties->fixed_key_len}, };
|
|
|
|
std::string last_key;
|
|
for (iter->SeekToFirst(); iter->Valid(); iter->Next()) {
|
|
s = iter->status();
|
|
if (!s.ok()) {
|
|
break;
|
|
}
|
|
|
|
auto key = iter->key().ToString();
|
|
// properties block is strictly sorted with no duplicate key.
|
|
assert(last_key.empty() ||
|
|
BytewiseComparator()->Compare(key, last_key) > 0);
|
|
last_key = key;
|
|
|
|
auto raw_val = iter->value();
|
|
auto pos = predefined_uint64_properties.find(key);
|
|
|
|
if (pos != predefined_uint64_properties.end()) {
|
|
// handle predefined rocksdb properties
|
|
uint64_t val;
|
|
if (!GetVarint64(&raw_val, &val)) {
|
|
// skip malformed value
|
|
auto error_msg =
|
|
"[Warning] detect malformed value in properties meta-block:"
|
|
"\tkey: " + key + "\tval: " + raw_val.ToString();
|
|
Log(logger, "%s", error_msg.c_str());
|
|
continue;
|
|
}
|
|
*(pos->second) = val;
|
|
} else if (key == TablePropertiesNames::kFilterPolicy) {
|
|
new_table_properties->filter_policy_name = raw_val.ToString();
|
|
} else {
|
|
// handle user-collected properties
|
|
new_table_properties->user_collected_properties.insert(
|
|
{key, raw_val.ToString()});
|
|
}
|
|
}
|
|
if (s.ok()) {
|
|
*table_properties = new_table_properties;
|
|
} else {
|
|
delete new_table_properties;
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
Status ReadTableProperties(RandomAccessFile* file, uint64_t file_size,
|
|
uint64_t table_magic_number, Env* env,
|
|
Logger* info_log, TableProperties** properties) {
|
|
// -- Read metaindex block
|
|
Footer footer(table_magic_number);
|
|
auto s = ReadFooterFromFile(file, file_size, &footer);
|
|
if (!s.ok()) {
|
|
return s;
|
|
}
|
|
|
|
auto metaindex_handle = footer.metaindex_handle();
|
|
BlockContents metaindex_contents;
|
|
ReadOptions read_options;
|
|
read_options.verify_checksums = false;
|
|
s = ReadBlockContents(file, footer, read_options, metaindex_handle,
|
|
&metaindex_contents, env, false);
|
|
if (!s.ok()) {
|
|
return s;
|
|
}
|
|
Block metaindex_block(metaindex_contents);
|
|
std::unique_ptr<Iterator> meta_iter(
|
|
metaindex_block.NewIterator(BytewiseComparator()));
|
|
|
|
// -- Read property block
|
|
bool found_properties_block = true;
|
|
s = SeekToPropertiesBlock(meta_iter.get(), &found_properties_block);
|
|
if (!s.ok()) {
|
|
return s;
|
|
}
|
|
|
|
TableProperties table_properties;
|
|
if (found_properties_block == true) {
|
|
s = ReadProperties(meta_iter->value(), file, footer, env, info_log,
|
|
properties);
|
|
} else {
|
|
s = Status::Corruption("Unable to read the property block.");
|
|
Log(WARN_LEVEL, info_log,
|
|
"Cannot find Properties block from file.");
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
} // namespace rocksdb
|