15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 51320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#ifndef STORAGE_BROWSER_BLOB_BLOB_URL_REQUEST_JOB_H_ 61320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#define STORAGE_BROWSER_BLOB_BLOB_URL_REQUEST_JOB_H_ 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#include <map> 9c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/memory/scoped_ptr.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/memory/weak_ptr.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/http/http_byte_range.h" 13868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "net/http/http_status_code.h" 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/url_request/url_request_job.h" 151320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#include "storage/browser/storage_browser_export.h" 161320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#include "storage/common/blob/blob_data.h" 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace base { 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class MessageLoopProxy; 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2203b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles)namespace storage { 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class FileSystemContext; 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace net { 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class DrainableIOBuffer; 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class IOBuffer; 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3103b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles)namespace storage { 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class FileStreamReader; 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// A request job that handles reading blob URLs. 361320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucciclass STORAGE_EXPORT BlobURLRequestJob 377d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) : public net::URLRequestJob { 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) BlobURLRequestJob(net::URLRequest* request, 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) net::NetworkDelegate* network_delegate, 411320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci const scoped_refptr<BlobData>& blob_data, 4203b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles) storage::FileSystemContext* file_system_context, 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::MessageLoopProxy* resolving_message_loop_proxy); 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // net::URLRequestJob methods. 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void Start() OVERRIDE; 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void Kill() OVERRIDE; 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual bool ReadRawData(net::IOBuffer* buf, 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int buf_size, 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int* bytes_read) OVERRIDE; 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual bool GetMimeType(std::string* mime_type) const OVERRIDE; 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void GetResponseInfo(net::HttpResponseInfo* info) OVERRIDE; 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual int GetResponseCode() const OVERRIDE; 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void SetExtraRequestHeaders( 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const net::HttpRequestHeaders& headers) OVERRIDE; 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) protected: 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ~BlobURLRequestJob(); 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) typedef std::map<size_t, FileStreamReader*> IndexToReaderMap; 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // For preparing for read: get the size, apply the range and perform seek. 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void DidStart(); 652a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool AddItemLength(size_t index, int64 item_length); 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void CountSize(); 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void DidCountSize(int error); 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void DidGetFileItemLength(size_t index, int64 result); 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void Seek(int64 offset); 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // For reading the blob. 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool ReadLoop(int* bytes_read); 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool ReadItem(); 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void AdvanceItem(); 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void AdvanceBytesRead(int result); 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool ReadBytesItem(const BlobData::Item& item, int bytes_to_read); 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool ReadFileItem(FileStreamReader* reader, int bytes_to_read); 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void DidReadFile(int result); 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void DeleteCurrentFileReader(); 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int ComputeBytesToRead() const; 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int BytesReadCompleted(); 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 85868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) // These methods convert the result of blob data reading into response headers 86868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) // and pass it to URLRequestJob's NotifyDone() or NotifyHeadersComplete(). 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void NotifySuccess(); 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void NotifyFailure(int); 89868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) void HeadersCompleted(net::HttpStatusCode status_code); 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns a FileStreamReader for a blob item at |index|. 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // If the item at |index| is not of file this returns NULL. 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FileStreamReader* GetFileStreamReader(size_t index); 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Creates a FileStreamReader for the item at |index| with additional_offset. 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void CreateFileStreamReader(size_t index, int64 additional_offset); 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_refptr<BlobData> blob_data_; 99868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 100868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) // Variables for controlling read from |blob_data_|. 10103b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles) scoped_refptr<storage::FileSystemContext> file_system_context_; 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_refptr<base::MessageLoopProxy> file_thread_proxy_; 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::vector<int64> item_length_list_; 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int64 total_size_; 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int64 remaining_bytes_; 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int pending_get_file_info_count_; 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IndexToReaderMap index_to_reader_; 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t current_item_index_; 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int64 current_item_offset_; 110868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 111868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) // Holds the buffer for read data with the IOBuffer interface. 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_refptr<net::DrainableIOBuffer> read_buf_; 113868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 114868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) // Is set when NotifyFailure() is called and reset when DidStart is called. 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool error_; 116868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool byte_range_set_; 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) net::HttpByteRange byte_range_; 119868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_ptr<net::HttpResponseInfo> response_info_; 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1224e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) base::WeakPtrFactory<BlobURLRequestJob> weak_factory_; 1234e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(BlobURLRequestJob); 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 12703b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles)} // namespace storage 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1291320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#endif // STORAGE_BROWSER_BLOB_BLOB_URL_REQUEST_JOB_H_ 130