| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| #ifndef KUDU_CFILE_BLOCK_POINTER_H |
| #define KUDU_CFILE_BLOCK_POINTER_H |
| |
| #include <stdio.h> |
| #include <string> |
| |
| #include "kudu/cfile/cfile.pb.h" |
| #include "kudu/gutil/strings/substitute.h" |
| #include "kudu/util/coding.h" |
| #include "kudu/util/coding-inl.h" |
| #include "kudu/util/status.h" |
| |
| namespace kudu { |
| namespace cfile { |
| |
| class BlockPointer { |
| public: |
| BlockPointer() {} |
| BlockPointer(const BlockPointer &from) : |
| offset_(from.offset_), |
| size_(from.size_) {} |
| |
| explicit BlockPointer(const BlockPointerPB &from) : |
| offset_(from.offset()), |
| size_(from.size()) { |
| } |
| |
| BlockPointer(uint64_t offset, uint64_t size) : |
| offset_(offset), |
| size_(size) {} |
| |
| std::string ToString() const { |
| return strings::Substitute("offset=$0 size=$1", offset_, size_); |
| } |
| |
| template<class StrType> |
| void EncodeTo(StrType *s) const { |
| PutVarint64(s, offset_); |
| InlinePutVarint32(s, size_); |
| } |
| |
| Status DecodeFrom(const uint8_t *data, const uint8_t *limit) { |
| data = GetVarint64Ptr(data, limit, &offset_); |
| if (!data) { |
| return Status::Corruption("bad block pointer"); |
| } |
| |
| data = GetVarint32Ptr(data, limit, &size_); |
| if (!data) { |
| return Status::Corruption("bad block pointer"); |
| } |
| |
| return Status::OK(); |
| } |
| |
| void CopyToPB(BlockPointerPB *pb) const { |
| pb->set_offset(offset_); |
| pb->set_size(size_); |
| } |
| |
| uint64_t offset() const { |
| return offset_; |
| } |
| |
| uint32_t size() const { |
| return size_; |
| } |
| |
| bool Equals(const BlockPointer& other) const { |
| return offset_ == other.offset_ && size_ == other.size_; |
| } |
| |
| private: |
| uint64_t offset_; |
| uint32_t size_; |
| }; |
| |
| |
| } // namespace cfile |
| } // namespace kudu |
| #endif |