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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "services/network/shared_dictionary/shared_dictionary_disk_cache.h"
#include <limits>
#include "base/functional/callback_helpers.h"
#include "base/trace_event/trace_event.h"
#include "base/trace_event/trace_id_helper.h"
namespace network {
namespace {
void RunTaskAndCallback(
base::OnceCallback<int(net::CompletionOnceCallback)> task,
net::CompletionOnceCallback callback) {
auto split_callback = base::SplitOnceCallback(std::move(callback));
int result = std::move(task).Run(std::move(split_callback.first));
if (result != net::ERR_IO_PENDING) {
std::move(split_callback.second).Run(std::move(result));
}
}
void RunTaksAndEntryResultCallback(
base::OnceCallback<disk_cache::EntryResult(disk_cache::EntryResultCallback)>
task,
disk_cache::EntryResultCallback callback) {
auto split_callback = base::SplitOnceCallback(std::move(callback));
disk_cache::EntryResult result =
std::move(task).Run(std::move(split_callback.first));
if (result.net_error() != net::ERR_IO_PENDING) {
std::move(split_callback.second).Run(std::move(result));
}
}
} // namespace
SharedDictionaryDiskCache::SharedDictionaryDiskCache() = default;
void SharedDictionaryDiskCache::Initialize(
const base::FilePath& cache_directory_path,
#if BUILDFLAG(IS_ANDROID)
disk_cache::ApplicationStatusListenerGetter app_status_listener_getter,
#endif // BUILDFLAG(IS_ANDROID)
scoped_refptr<disk_cache::BackendFileOperationsFactory>
file_operations_factory) {
DCHECK_EQ(State::kBeforeInitialize, state_);
state_ = State::kInitializing;
disk_cache::BackendResult result = CreateCacheBackend(
cache_directory_path,
#if BUILDFLAG(IS_ANDROID)
app_status_listener_getter,
#endif // BUILDFLAG(IS_ANDROID)
std::move(file_operations_factory),
base::BindOnce(&SharedDictionaryDiskCache::DidCreateBackend,
GetWeakPtr()));
if (result.net_error != net::ERR_IO_PENDING) {
DidCreateBackend(std::move(result));
}
}
SharedDictionaryDiskCache::~SharedDictionaryDiskCache() = default;
disk_cache::BackendResult SharedDictionaryDiskCache::CreateCacheBackend(
const base::FilePath& cache_directory_path,
#if BUILDFLAG(IS_ANDROID)
disk_cache::ApplicationStatusListenerGetter app_status_listener_getter,
#endif // BUILDFLAG(IS_ANDROID)
scoped_refptr<disk_cache::BackendFileOperationsFactory>
file_operations_factory,
disk_cache::BackendResultCallback callback) {
CHECK(!cache_directory_path.empty());
// We use APP_CACHE to avoid the auto-eviction.
// Also we use std::numeric_limits<int64_t>::max() for `max_bytes`, because
// the cache size is controlled by the SharedDictionaryManagerOnDisk.
return disk_cache::CreateCacheBackend(
net::APP_CACHE, net::CACHE_BACKEND_SIMPLE, file_operations_factory.get(),
cache_directory_path, /*max_bytes=*/std::numeric_limits<int64_t>::max(),
disk_cache::ResetHandling::kResetOnError,
/*net_log=*/nullptr, /*cache_encryption_delegate=*/nullptr,
std::move(callback)
#if BUILDFLAG(IS_ANDROID)
,
std::move(app_status_listener_getter)
#endif // BUILDFLAG(IS_ANDROID));
);
}
disk_cache::EntryResult SharedDictionaryDiskCache::OpenOrCreateEntry(
const std::string& key,
bool create,
disk_cache::EntryResultCallback callback) {
switch (state_) {
case State::kBeforeInitialize:
NOTREACHED();
case State::kInitializing:
// It is safe to use Unretained() below because
// `pending_disk_cache_tasks_` is owned by `this` and the passed task
// `SharedDictionaryDiskCache::OpenOrCreateEntry()` will be called only
// when `this` is available.
pending_disk_cache_tasks_.push_back(base::BindOnce(
&RunTaksAndEntryResultCallback,
base::BindOnce(&SharedDictionaryDiskCache::OpenOrCreateEntry,
base::Unretained(this), key, create),
std::move(callback)));
return disk_cache::EntryResult::MakeError(net::ERR_IO_PENDING);
case State::kInitialized:
DCHECK(backend_);
return create
? backend_->CreateEntry(key, net::LOW, std::move(callback))
: backend_->OpenEntry(key, net::HIGHEST, std::move(callback));
case State::kFailed:
return disk_cache::EntryResult::MakeError(net::ERR_FAILED);
}
}
int SharedDictionaryDiskCache::DoomEntry(const std::string& key,
net::CompletionOnceCallback callback) {
switch (state_) {
case State::kBeforeInitialize:
NOTREACHED();
case State::kInitializing:
// It is safe to use Unretained() below because
// `pending_disk_cache_tasks_` is owned by `this` and the passed task
// `SharedDictionaryDiskCache::DoomEntry()` will be called only when
// `this` is available.
pending_disk_cache_tasks_.push_back(
base::BindOnce(&RunTaskAndCallback,
base::BindOnce(&SharedDictionaryDiskCache::DoomEntry,
base::Unretained(this), key),
std::move(callback)));
return net::ERR_IO_PENDING;
case State::kInitialized:
DCHECK(backend_);
return backend_->DoomEntry(key, net::LOW, std::move(callback));
case State::kFailed:
return net::ERR_FAILED;
}
}
int SharedDictionaryDiskCache::ClearAll(net::CompletionOnceCallback callback) {
switch (state_) {
case State::kBeforeInitialize:
NOTREACHED();
case State::kInitializing:
// It is safe to use Unretained() below because
// `pending_disk_cache_tasks_` is owned by `this` and the passed task
// `SharedDictionaryDiskCache::ClearAll()` will be called only when `this`
// is available.
pending_disk_cache_tasks_.push_back(
base::BindOnce(&RunTaskAndCallback,
base::BindOnce(&SharedDictionaryDiskCache::ClearAll,
base::Unretained(this)),
std::move(callback)));
return net::ERR_IO_PENDING;
case State::kInitialized:
DCHECK(backend_);
return backend_->DoomAllEntries(std::move(callback));
case State::kFailed:
return net::ERR_FAILED;
}
}
void SharedDictionaryDiskCache::CreateIterator(
base::OnceCallback<void(std::unique_ptr<disk_cache::Backend::Iterator>)>
callback) {
switch (state_) {
case State::kBeforeInitialize:
NOTREACHED();
case State::kInitializing:
// It is safe to use Unretained() below because
// `pending_disk_cache_tasks_` is owned by `this` and the passed task
// `SharedDictionaryDiskCache::CreateIterator()` will be called only when
// `this` is available.
pending_disk_cache_tasks_.push_back(
base::BindOnce(&SharedDictionaryDiskCache::CreateIterator,
base::Unretained(this), std::move(callback)));
return;
case State::kInitialized:
DCHECK(backend_);
std::move(callback).Run(backend_->CreateIterator());
return;
case State::kFailed:
std::move(callback).Run(nullptr);
return;
}
}
void SharedDictionaryDiskCache::DidCreateBackend(
disk_cache::BackendResult result) {
if (result.net_error != net::OK) {
state_ = State::kFailed;
} else {
state_ = State::kInitialized;
backend_ = std::move(result.backend);
}
auto tasks = std::move(pending_disk_cache_tasks_);
base::WeakPtr<SharedDictionaryDiskCache> weak_ptr = GetWeakPtr();
for (auto& task : tasks) {
std::move(task).Run();
if (!weak_ptr) {
return;
}
}
}
} // namespace network
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