1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151
|
// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "net/base/elements_upload_data_stream.h"
#include <utility>
#include "base/check_op.h"
#include "base/functional/bind.h"
#include "net/base/io_buffer.h"
#include "net/base/net_errors.h"
#include "net/base/upload_bytes_element_reader.h"
#include "net/base/upload_element_reader.h"
namespace net {
ElementsUploadDataStream::ElementsUploadDataStream(
std::vector<std::unique_ptr<UploadElementReader>> element_readers,
int64_t identifier)
: UploadDataStream(false, identifier),
element_readers_(std::move(element_readers)) {}
ElementsUploadDataStream::~ElementsUploadDataStream() = default;
std::unique_ptr<UploadDataStream> ElementsUploadDataStream::CreateWithReader(
std::unique_ptr<UploadElementReader> reader,
int64_t identifier) {
std::vector<std::unique_ptr<UploadElementReader>> readers;
readers.push_back(std::move(reader));
return std::make_unique<ElementsUploadDataStream>(std::move(readers),
identifier);
}
int ElementsUploadDataStream::InitInternal(const NetLogWithSource& net_log) {
return InitElements(0);
}
int ElementsUploadDataStream::ReadInternal(
IOBuffer* buf,
int buf_len) {
DCHECK_GT(buf_len, 0);
return ReadElements(base::MakeRefCounted<DrainableIOBuffer>(buf, buf_len));
}
bool ElementsUploadDataStream::IsInMemory() const {
for (const std::unique_ptr<UploadElementReader>& it : element_readers_) {
if (!it->IsInMemory())
return false;
}
return true;
}
const std::vector<std::unique_ptr<UploadElementReader>>*
ElementsUploadDataStream::GetElementReaders() const {
return &element_readers_;
}
void ElementsUploadDataStream::ResetInternal() {
weak_ptr_factory_.InvalidateWeakPtrs();
read_error_ = OK;
element_index_ = 0;
}
int ElementsUploadDataStream::InitElements(size_t start_index) {
// Call Init() for all elements.
for (size_t i = start_index; i < element_readers_.size(); ++i) {
UploadElementReader* reader = element_readers_[i].get();
// When new_result is ERR_IO_PENDING, InitInternal() will be called
// with start_index == i + 1 when reader->Init() finishes.
int result = reader->Init(
base::BindOnce(&ElementsUploadDataStream::OnInitElementCompleted,
weak_ptr_factory_.GetWeakPtr(), i));
DCHECK(result != ERR_IO_PENDING || !reader->IsInMemory());
DCHECK_LE(result, OK);
if (result != OK)
return result;
}
uint64_t total_size = 0;
for (const std::unique_ptr<UploadElementReader>& it : element_readers_) {
total_size += it->GetContentLength();
}
SetSize(total_size);
return OK;
}
void ElementsUploadDataStream::OnInitElementCompleted(size_t index,
int result) {
DCHECK_NE(ERR_IO_PENDING, result);
// Check the last result.
if (result == OK)
result = InitElements(index + 1);
if (result != ERR_IO_PENDING)
OnInitCompleted(result);
}
int ElementsUploadDataStream::ReadElements(
const scoped_refptr<DrainableIOBuffer>& buf) {
while (read_error_ == OK && element_index_ < element_readers_.size()) {
UploadElementReader* reader = element_readers_[element_index_].get();
if (reader->BytesRemaining() == 0) {
++element_index_;
continue;
}
if (buf->BytesRemaining() == 0)
break;
int result = reader->Read(
buf.get(), buf->BytesRemaining(),
base::BindOnce(&ElementsUploadDataStream::OnReadElementCompleted,
weak_ptr_factory_.GetWeakPtr(), buf));
if (result == ERR_IO_PENDING)
return ERR_IO_PENDING;
ProcessReadResult(buf, result);
}
if (buf->BytesConsumed() > 0)
return buf->BytesConsumed();
return read_error_;
}
void ElementsUploadDataStream::OnReadElementCompleted(
const scoped_refptr<DrainableIOBuffer>& buf,
int result) {
ProcessReadResult(buf, result);
result = ReadElements(buf);
if (result != ERR_IO_PENDING)
OnReadCompleted(result);
}
void ElementsUploadDataStream::ProcessReadResult(
const scoped_refptr<DrainableIOBuffer>& buf,
int result) {
DCHECK_NE(ERR_IO_PENDING, result);
DCHECK(!read_error_);
if (result >= 0) {
buf->DidConsume(result);
} else {
read_error_ = result;
}
}
} // namespace net
|