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1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "blimp/net/blob_channel/blob_channel_receiver.h" | |
6 | |
7 #include "base/logging.h" | |
8 #include "base/macros.h" | |
9 #include "base/memory/ptr_util.h" | |
10 #include "blimp/common/blob_cache/blob_cache.h" | |
11 #include "blimp/common/blob_cache/id_util.h" | |
12 | |
13 namespace blimp { | |
14 namespace { | |
15 | |
16 // Takes incoming blobs from |delegate_| stores them in |cache_|, and provides | |
17 // callers a getter interface for accessing blobs from |cache_|. | |
18 class BLIMP_NET_EXPORT BlobChannelReceiverImpl : public BlobChannelReceiver { | |
19 public: | |
20 BlobChannelReceiverImpl(std::unique_ptr<BlobCache> cache, | |
21 std::unique_ptr<Delegate> delegate); | |
22 ~BlobChannelReceiverImpl() override; | |
23 | |
24 // BlobChannelReceiver implementation. | |
25 BlobDataPtr Get(const BlobId& id) override; | |
26 void OnBlobReceived(const BlobId& id, BlobDataPtr data) override; | |
27 | |
28 private: | |
29 std::unique_ptr<BlobCache> cache_; | |
30 std::unique_ptr<Delegate> delegate_; | |
31 | |
32 // Guards against concurrent access to |cache_|. | |
33 base::Lock cache_lock_; | |
34 | |
35 DISALLOW_COPY_AND_ASSIGN(BlobChannelReceiverImpl); | |
36 }; | |
37 | |
38 } // namespace | |
39 | |
40 // static | |
41 std::unique_ptr<BlobChannelReceiver> BlobChannelReceiver::Create( | |
42 std::unique_ptr<BlobCache> cache, | |
43 std::unique_ptr<Delegate> delegate) { | |
44 return base::WrapUnique( | |
45 new BlobChannelReceiverImpl(std::move(cache), std::move(delegate))); | |
46 } | |
47 | |
48 BlobChannelReceiverImpl::BlobChannelReceiverImpl( | |
49 std::unique_ptr<BlobCache> cache, | |
50 std::unique_ptr<Delegate> delegate) | |
51 : cache_(std::move(cache)), delegate_(std::move(delegate)) { | |
52 DCHECK(cache_); | |
53 | |
54 delegate_->SetReceiver(this); | |
55 } | |
56 | |
57 BlobChannelReceiverImpl::~BlobChannelReceiverImpl() {} | |
58 | |
59 BlobDataPtr BlobChannelReceiverImpl::Get(const BlobId& id) { | |
60 DVLOG(2) << "Get blob: " << BlobIdToString(id); | |
61 | |
62 base::AutoLock lock(cache_lock_); | |
63 return cache_->Get(id); | |
64 } | |
65 | |
66 void BlobChannelReceiverImpl::OnBlobReceived(const BlobId& id, | |
67 BlobDataPtr data) { | |
68 DVLOG(2) << "Blob received: " << BlobIdToString(id) | |
69 << ", size: " << data->data.size(); | |
70 | |
71 base::AutoLock lock(cache_lock_); | |
72 cache_->Put(id, data); | |
73 } | |
74 | |
75 } // namespace blimp | |
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