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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "chrome/browser/budget_service/budget_database.h" | 5 #include "chrome/browser/budget_service/budget_database.h" |
6 | 6 |
7 #include "chrome/browser/budget_service/budget.pb.h" | 7 #include "chrome/browser/budget_service/budget.pb.h" |
8 #include "components/leveldb_proto/proto_database_impl.h" | 8 #include "components/leveldb_proto/proto_database_impl.h" |
9 #include "content/public/browser/browser_thread.h" | 9 #include "content/public/browser/browser_thread.h" |
10 #include "url/gurl.h" | 10 #include "url/gurl.h" |
11 | 11 |
12 using content::BrowserThread; | |
13 | |
12 namespace { | 14 namespace { |
13 | 15 |
14 // UMA are logged for the database with this string as part of the name. | 16 // UMA are logged for the database with this string as part of the name. |
15 // They will be LevelDB.*.BackgroundBudgetService. Changes here should be | 17 // They will be LevelDB.*.BackgroundBudgetService. Changes here should be |
16 // synchronized with histograms.xml. | 18 // synchronized with histograms.xml. |
17 const char kDatabaseUMAName[] = "BackgroundBudgetService"; | 19 const char kDatabaseUMAName[] = "BackgroundBudgetService"; |
18 | 20 |
19 } // namespace | 21 } // namespace |
20 | 22 |
21 BudgetDatabase::BudgetDatabase( | 23 BudgetDatabase::BudgetDatabase( |
22 const base::FilePath& database_dir, | 24 const base::FilePath& database_dir, |
23 const scoped_refptr<base::SequencedTaskRunner>& task_runner) | 25 const scoped_refptr<base::SequencedTaskRunner>& task_runner) |
24 : db_(new leveldb_proto::ProtoDatabaseImpl<budget_service::Budget>( | 26 : db_(new leveldb_proto::ProtoDatabaseImpl<budget_service::Budget>( |
25 task_runner)), | 27 task_runner)), |
26 weak_ptr_factory_(this) { | 28 weak_ptr_factory_(this) { |
27 db_->Init(kDatabaseUMAName, database_dir, | 29 db_->Init(kDatabaseUMAName, database_dir, |
28 base::Bind(&BudgetDatabase::OnDatabaseInit, | 30 base::Bind(&BudgetDatabase::OnDatabaseInit, |
29 weak_ptr_factory_.GetWeakPtr())); | 31 weak_ptr_factory_.GetWeakPtr())); |
30 } | 32 } |
31 | 33 |
32 BudgetDatabase::~BudgetDatabase() {} | 34 BudgetDatabase::~BudgetDatabase() {} |
33 | 35 |
34 void BudgetDatabase::OnDatabaseInit(bool success) { | 36 // TODO(harkness): Either remove this method or add caching. |
35 // TODO(harkness): Consider caching the budget database now? | |
36 } | |
37 | |
38 void BudgetDatabase::GetValue(const GURL& origin, | 37 void BudgetDatabase::GetValue(const GURL& origin, |
39 const GetValueCallback& callback) { | 38 const GetValueCallback& callback) { |
40 DCHECK_EQ(origin.GetOrigin(), origin); | 39 DCHECK_EQ(origin.GetOrigin(), origin); |
41 db_->GetEntry(origin.spec(), callback); | 40 db_->GetEntry(origin.spec(), callback); |
42 } | 41 } |
43 | 42 |
44 void BudgetDatabase::SetValue(const GURL& origin, | 43 void BudgetDatabase::SetValue(const GURL& origin, |
45 const budget_service::Budget& budget, | 44 const budget_service::Budget& budget, |
46 const SetValueCallback& callback) { | 45 const SetValueCallback& callback) { |
47 DCHECK_EQ(origin.GetOrigin(), origin); | 46 DCHECK_EQ(origin.GetOrigin(), origin); |
48 | 47 |
48 // TODO(harkness) Either remove this method or add the updated value to | |
49 // the cache. | |
Peter Beverloo
2016/07/26 17:26:21
I think we decided on this one, so remove the ambi
harkness
2016/07/27 10:59:03
Done.
| |
50 | |
49 // Build structures to hold the updated values. | 51 // Build structures to hold the updated values. |
50 std::unique_ptr< | 52 std::unique_ptr< |
51 leveldb_proto::ProtoDatabase<budget_service::Budget>::KeyEntryVector> | 53 leveldb_proto::ProtoDatabase<budget_service::Budget>::KeyEntryVector> |
52 entries(new leveldb_proto::ProtoDatabase< | 54 entries(new leveldb_proto::ProtoDatabase< |
53 budget_service::Budget>::KeyEntryVector()); | 55 budget_service::Budget>::KeyEntryVector()); |
54 entries->push_back(std::make_pair(origin.spec(), budget)); | 56 entries->push_back(std::make_pair(origin.spec(), budget)); |
55 std::unique_ptr<std::vector<std::string>> keys_to_remove( | 57 std::unique_ptr<std::vector<std::string>> keys_to_remove( |
56 new std::vector<std::string>()); | 58 new std::vector<std::string>()); |
57 | 59 |
58 // Send the updates to the database. | 60 // Send the updates to the database. |
59 db_->UpdateEntries(std::move(entries), std::move(keys_to_remove), callback); | 61 db_->UpdateEntries(std::move(entries), std::move(keys_to_remove), callback); |
60 } | 62 } |
63 | |
64 void BudgetDatabase::GetBudgetDetails( | |
65 const GURL& origin, | |
66 const GetBudgetDetailsCallback& callback) { | |
67 DCHECK_EQ(origin.GetOrigin(), origin); | |
68 | |
69 // If this origin is already in the cache, immediately return the data. | |
70 if (budget_map_.find(origin.spec()) != budget_map_.end()) { | |
71 BrowserThread::PostTask( | |
72 BrowserThread::UI, FROM_HERE, | |
73 base::Bind(&BudgetDatabase::DidGetBudget, | |
74 weak_ptr_factory_.GetWeakPtr(), origin, callback, true)); | |
Peter Beverloo
2016/07/26 17:26:20
true -> true /* success */
harkness
2016/07/27 10:59:03
Done.
| |
75 return; | |
76 } | |
77 | |
78 // Otherwise, query for the data, add it to the cache, then return the result. | |
79 AddToCacheCallback cache_callback = | |
80 base::Bind(&BudgetDatabase::DidGetBudget, weak_ptr_factory_.GetWeakPtr(), | |
81 origin, callback); | |
82 db_->GetEntry(origin.spec(), base::Bind(&BudgetDatabase::AddToCache, | |
83 weak_ptr_factory_.GetWeakPtr(), | |
84 origin, cache_callback)); | |
85 } | |
86 | |
87 void BudgetDatabase::OnDatabaseInit(bool success) { | |
88 // TODO(harkness): Consider caching the budget database now? | |
89 } | |
90 | |
91 void BudgetDatabase::AddToCache( | |
92 const GURL& origin, | |
93 const AddToCacheCallback& callback, | |
94 bool success, | |
95 std::unique_ptr<budget_service::Budget> budget_proto) { | |
96 // If the database read failed, there's nothing to add to the cache. | |
97 if (!success) { | |
98 callback.Run(success); | |
99 return; | |
100 } | |
101 | |
102 // Add the data to the cache. | |
103 BudgetDatabase::BudgetInfo& info = budget_map_[origin.spec()]; | |
104 info.second.clear(); | |
105 info.first = budget_proto->debt(); | |
106 | |
107 // Convert from the proto format to an STL format which is better for | |
108 // removing things from the front of the list. | |
109 for (int i = 0; i < budget_proto->budget_size(); i++) { | |
110 const budget_service::BudgetChunk& chunk = budget_proto->budget(i); | |
111 info.second.push_back( | |
112 std::pair<double, double>(chunk.amount(), chunk.expiration())); | |
113 } | |
114 | |
115 callback.Run(success); | |
116 } | |
117 | |
118 void BudgetDatabase::DidGetBudget(const GURL& origin, | |
119 const GetBudgetDetailsCallback& callback, | |
120 bool success) { | |
121 // If the database wasn't able to read the information, return the | |
122 // failure and an empty BudgetExpectation. | |
123 if (!success) { | |
124 callback.Run(success, 0, BudgetExpectation()); | |
125 return; | |
126 } | |
127 | |
128 // Otherwise, build up the BudgetExpection. This is different from the format | |
129 // in which the cache stores the data. The cache stores chunks of budget and | |
130 // when that budget expires. The BudgetExpectation describes a set of times | |
131 // and the budget at those times. | |
132 const BudgetInfo& info = budget_map_[origin.spec()]; | |
133 BudgetExpectation expectation; | |
134 double total = 0; | |
135 | |
136 // Starting with the chunks that expire the farthest in the future, build up | |
137 // the budget expectations for those future times. | |
138 for (BudgetChunks::const_reverse_iterator iter = info.second.rbegin(); | |
Peter Beverloo
2016/07/26 17:26:20
const auto&
harkness
2016/07/27 10:59:02
I believe there are issues with const auto& in thi
Peter Beverloo
2016/07/27 11:21:40
You're right re: const, because we're incrementing
| |
139 iter != info.second.rend(); iter++) { | |
140 expectation.push_front(std::make_pair(total, iter->second)); | |
141 total += iter->first; | |
142 } | |
143 | |
144 // Always add one entry at the front of the list for the total budget right | |
145 // now. | |
146 expectation.push_front(std::make_pair(total, 0)); | |
147 | |
148 callback.Run(success, info.first, expectation); | |
149 } | |
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