rocksdb/db/table_properties_collector.cc
Siying Dong d616ebea23 Add GPLv2 as an alternative license.
Summary: Closes https://github.com/facebook/rocksdb/pull/2226

Differential Revision: D4967547

Pulled By: siying

fbshipit-source-id: dd3b58ae1e7a106ab6bb6f37ab5c88575b125ab4
2017-04-27 18:06:12 -07:00

137 lines
4.2 KiB
C++

// Copyright (c) 2011-present, 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.
// This source code is also licensed under the GPLv2 license found in the
// COPYING file in the root directory of this source tree.
#include "db/table_properties_collector.h"
#include "db/dbformat.h"
#include "util/coding.h"
#include "util/string_util.h"
namespace rocksdb {
Status InternalKeyPropertiesCollector::InternalAdd(const Slice& key,
const Slice& value,
uint64_t file_size) {
ParsedInternalKey ikey;
if (!ParseInternalKey(key, &ikey)) {
return Status::InvalidArgument("Invalid internal key");
}
// Note: We count both, deletions and single deletions here.
if (ikey.type == ValueType::kTypeDeletion ||
ikey.type == ValueType::kTypeSingleDeletion) {
++deleted_keys_;
} else if (ikey.type == ValueType::kTypeMerge) {
++merge_operands_;
}
return Status::OK();
}
Status InternalKeyPropertiesCollector::Finish(
UserCollectedProperties* properties) {
assert(properties);
assert(properties->find(
InternalKeyTablePropertiesNames::kDeletedKeys) == properties->end());
assert(properties->find(InternalKeyTablePropertiesNames::kMergeOperands) ==
properties->end());
std::string val_deleted_keys;
PutVarint64(&val_deleted_keys, deleted_keys_);
properties->insert(
{InternalKeyTablePropertiesNames::kDeletedKeys, val_deleted_keys});
std::string val_merge_operands;
PutVarint64(&val_merge_operands, merge_operands_);
properties->insert(
{InternalKeyTablePropertiesNames::kMergeOperands, val_merge_operands});
return Status::OK();
}
UserCollectedProperties
InternalKeyPropertiesCollector::GetReadableProperties() const {
return {{"kDeletedKeys", ToString(deleted_keys_)},
{"kMergeOperands", ToString(merge_operands_)}};
}
namespace {
EntryType GetEntryType(ValueType value_type) {
switch (value_type) {
case kTypeValue:
return kEntryPut;
case kTypeDeletion:
return kEntryDelete;
case kTypeSingleDeletion:
return kEntrySingleDelete;
case kTypeMerge:
return kEntryMerge;
default:
return kEntryOther;
}
}
uint64_t GetUint64Property(const UserCollectedProperties& props,
const std::string property_name,
bool* property_present) {
auto pos = props.find(property_name);
if (pos == props.end()) {
*property_present = false;
return 0;
}
Slice raw = pos->second;
uint64_t val = 0;
*property_present = true;
return GetVarint64(&raw, &val) ? val : 0;
}
} // namespace
Status UserKeyTablePropertiesCollector::InternalAdd(const Slice& key,
const Slice& value,
uint64_t file_size) {
ParsedInternalKey ikey;
if (!ParseInternalKey(key, &ikey)) {
return Status::InvalidArgument("Invalid internal key");
}
return collector_->AddUserKey(ikey.user_key, value, GetEntryType(ikey.type),
ikey.sequence, file_size);
}
Status UserKeyTablePropertiesCollector::Finish(
UserCollectedProperties* properties) {
return collector_->Finish(properties);
}
UserCollectedProperties
UserKeyTablePropertiesCollector::GetReadableProperties() const {
return collector_->GetReadableProperties();
}
const std::string InternalKeyTablePropertiesNames::kDeletedKeys
= "rocksdb.deleted.keys";
const std::string InternalKeyTablePropertiesNames::kMergeOperands =
"rocksdb.merge.operands";
uint64_t GetDeletedKeys(
const UserCollectedProperties& props) {
bool property_present_ignored;
return GetUint64Property(props, InternalKeyTablePropertiesNames::kDeletedKeys,
&property_present_ignored);
}
uint64_t GetMergeOperands(const UserCollectedProperties& props,
bool* property_present) {
return GetUint64Property(
props, InternalKeyTablePropertiesNames::kMergeOperands, property_present);
}
} // namespace rocksdb