| // 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. |
| |
| #pragma once |
| |
| #include "runtime/io/file-reader.h" |
| #include "runtime/io/request-ranges.h" |
| |
| namespace impala { |
| namespace io { |
| |
| /// Only for testing the code path when reading from the cache is successful. |
| /// Takes a pointer to a buffer in its constructor, also the length of this buffer. |
| /// CachedFile() simply returns the pointer and length. |
| /// Invoking ReadFromPos() on it results in an error. |
| class CacheReaderTestStub : public FileReader { |
| public: |
| CacheReaderTestStub(ScanRange* scan_range, uint8_t* cache, int64_t length) : |
| FileReader(scan_range), |
| cache_(cache), |
| length_(length) { |
| } |
| |
| ~CacheReaderTestStub() {} |
| |
| virtual Status Open(bool use_file_handle_cache) override { |
| return Status::OK(); |
| } |
| |
| virtual Status ReadFromPos(DiskQueue* queue, int64_t file_offset, uint8_t* buffer, |
| int64_t bytes_to_read, int64_t* bytes_read, bool* eof) override { |
| DCHECK(false); |
| return Status("Not implemented"); |
| } |
| |
| virtual void CachedFile(uint8_t** data, int64_t* length) override { |
| *length = length_; |
| *data = cache_; |
| } |
| |
| virtual void Close() override {} |
| private: |
| uint8_t* cache_ = nullptr; |
| int64_t length_ = 0; |
| }; |
| |
| } |
| } |