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
|
// Copyright 2020 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_SPEECH_UPSTREAM_LOADER_H_
#define COMPONENTS_SPEECH_UPSTREAM_LOADER_H_
#include <memory>
#include <string>
#include "base/memory/raw_ptr.h"
#include "mojo/public/cpp/bindings/receiver_set.h"
#include "mojo/public/cpp/system/data_pipe.h"
#include "services/network/public/cpp/resource_request.h"
#include "services/network/public/cpp/simple_url_loader.h"
#include "services/network/public/mojom/chunked_data_pipe_getter.mojom.h"
namespace speech {
class UpstreamLoaderClient;
// Maximum amount of data written per Mojo write.
const uint32_t kMaxUploadWrite = 128 * 1024;
// Streams sound data up to the server. Buffers entire request body into memory,
// so it can be replayed in the case of redirects or retries.
class UpstreamLoader : public network::mojom::ChunkedDataPipeGetter {
public:
UpstreamLoader(std::unique_ptr<network::ResourceRequest> resource_request,
net::NetworkTrafficAnnotationTag upstream_traffic_annotation,
network::mojom::URLLoaderFactory* url_loader_factory,
UpstreamLoaderClient* upstream_loader_client);
UpstreamLoader(const UpstreamLoader&) = delete;
UpstreamLoader& operator=(const UpstreamLoader&) = delete;
~UpstreamLoader() override;
void SendData();
void AppendChunkToUpload(const std::string& data, bool is_last_chunk);
private:
void OnUploadPipeWriteable(MojoResult unused);
void OnComplete(std::unique_ptr<std::string> response_body);
// mojom::ChunkedDataPipeGetter implementation:
void GetSize(GetSizeCallback get_size_callback) override;
void StartReading(mojo::ScopedDataPipeProducerHandle pipe) override;
// Partial upload body. Have to cache the entire thing in memory, in case have
// to replay it.
std::string upload_body_;
// Current position in |upload_body_|. All bytes before this point have been
// written to |upload_pipe_|.
size_t upload_position_ = 0;
// Whether |upload_body_| is complete.
bool has_last_chunk_ = false;
// Current pipe being used to send the |upload_body_| to the URLLoader.
mojo::ScopedDataPipeProducerHandle upload_pipe_;
// Watches |upload_pipe_| for writeability.
std::unique_ptr<mojo::SimpleWatcher> upload_pipe_watcher_;
// If non-null, invoked once the size of the upload is known.
network::mojom::ChunkedDataPipeGetter::GetSizeCallback get_size_callback_;
// The UpstreamLoaderClient must outlive the UpstreamLoader.
const raw_ptr<UpstreamLoaderClient> upstream_loader_client_;
std::unique_ptr<network::SimpleURLLoader> simple_url_loader_;
mojo::ReceiverSet<network::mojom::ChunkedDataPipeGetter> receiver_set_;
};
} // namespace speech
#endif // COMPONENTS_SPEECH_UPSTREAM_LOADER_H_
|
