blob: 64fe71514f70c4ed36c3ac3cbd402fe618fdfe0a (
plain)
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
|
// Copyright 2016 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 CONTENT_BROWSER_BROWSING_DATA_CONDITIONAL_CACHE_DELETION_HELPER_H_
#define CONTENT_BROWSER_BROWSING_DATA_CONDITIONAL_CACHE_DELETION_HELPER_H_
#include <memory>
#include "base/callback_forward.h"
#include "base/sequenced_task_runner_helpers.h"
#include "content/common/content_export.h"
#include "net/base/completion_once_callback.h"
#include "net/base/net_errors.h"
#include "net/disk_cache/disk_cache.h"
#include "url/gurl.h"
namespace disk_cache {
class Entry;
}
namespace content {
// Helper to remove http/code cache data from a StoragePartition.
class CONTENT_EXPORT ConditionalCacheDeletionHelper {
public:
// Creates a helper to delete |cache| entries that match the |condition|.
// Must be created on the IO thread!
ConditionalCacheDeletionHelper(
disk_cache::Backend* cache,
base::RepeatingCallback<bool(const disk_cache::Entry*)> condition);
// A convenience method to create a condition matching cache entries whose
// last modified time is between |begin_time| (inclusively), |end_time|
// (exclusively) and whose URL is matched by the |url_predicate|. Note that
// |begin_time| and |end_time| can be null to indicate unbounded time interval
// in their respective direction.
static base::Callback<bool(const disk_cache::Entry*)>
CreateURLAndTimeCondition(
base::RepeatingCallback<bool(const GURL&)> url_predicate,
base::Time begin_time,
base::Time end_time);
// A convenience method to create a condition matching cache entries whose
// last modified time is between |begin_time| (inclusively), |end_time|
// (exclusively) and whose URL obtained by passing the key to the
// |get_url_from_key| is matched by the |url_predicate|. The
// |get_url_from_key| method is useful when the entries are not keyed by the
// resource url alone. For ex: using two keys for site isolation.
static base::RepeatingCallback<bool(const disk_cache::Entry*)>
CreateCustomKeyURLAndTimeCondition(
base::RepeatingCallback<bool(const GURL&)> url_predicate,
base::RepeatingCallback<std::string(const std::string&)> get_url_from_key,
base::Time begin_time,
base::Time end_time);
// Deletes the cache entries according to the specified condition. Destroys
// this instance of ConditionalCacheDeletionHelper when finished.
// Must be called on the IO thread!
//
// The return value is a net error code. If this method returns
// ERR_IO_PENDING, the |completion_callback| will be invoked when the
// operation completes.
int DeleteAndDestroySelfWhenFinished(
net::CompletionOnceCallback completion_callback);
private:
friend class base::DeleteHelper<ConditionalCacheDeletionHelper>;
~ConditionalCacheDeletionHelper();
void IterateOverEntries(int error);
disk_cache::Backend* cache_;
const base::Callback<bool(const disk_cache::Entry*)> condition_;
net::CompletionOnceCallback completion_callback_;
std::unique_ptr<disk_cache::Backend::Iterator> iterator_;
disk_cache::Entry* current_entry_;
disk_cache::Entry* previous_entry_;
DISALLOW_COPY_AND_ASSIGN(ConditionalCacheDeletionHelper);
};
} // namespace content
#endif // CONTENT_BROWSER_BROWSING_DATA_CONDITIONAL_CACHE_DELETION_HELPER_H_
|
