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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/persistent_cache/persistent_cache_collection.h"
#include <memory>
#include "components/persistent_cache/backend_params.h"
#include "components/persistent_cache/backend_params_manager.h"
#include "components/persistent_cache/entry.h"
#include "components/persistent_cache/persistent_cache.h"
namespace {
constexpr size_t kLruCacheCapacity = 100;
} // namespace
namespace persistent_cache {
PersistentCacheCollection::PersistentCacheCollection(
std::unique_ptr<BackendParamsManager> backend_params_manager)
: backend_params_manager_(std::move(backend_params_manager)),
persistent_caches_(kLruCacheCapacity) {}
PersistentCacheCollection::~PersistentCacheCollection() = default;
std::unique_ptr<Entry> PersistentCacheCollection::Find(
const std::string& cache_id,
std::string_view key) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
return GetOrCreateCache(cache_id)->Find(key);
}
void PersistentCacheCollection::Insert(const std::string& cache_id,
std::string_view key,
base::span<const uint8_t> content,
EntryMetadata metadata) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
GetOrCreateCache(cache_id)->Insert(key, content, metadata);
}
void PersistentCacheCollection::ClearForTesting() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
persistent_caches_.Clear();
}
void PersistentCacheCollection::DeleteAllFiles() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
// Delete all managed parsistent caches so they don't hold on to files or
// prevent their deletion.
persistent_caches_.Clear();
backend_params_manager_->DeleteAllFiles();
}
PersistentCache* PersistentCacheCollection::GetOrCreateCache(
const std::string& cache_id) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
auto it = persistent_caches_.Get(cache_id);
// If the cache is already created.
if (it != persistent_caches_.end()) {
return it->second.get();
}
// Create the cache
// TODO(crbug.com/377475540): Currently this class is deeply tied to the
// sqlite implementation. Once the conversion to and from mojo types is
// implemented this class should get a way to select the desired backend type.
// TODO: Allow choosing the desired access rights.
auto inserted_it = persistent_caches_.Put(
cache_id,
PersistentCache::Open(backend_params_manager_->GetOrCreateParamsSync(
BackendType::kSqlite, cache_id,
BackendParamsManager::AccessRights::kReadWrite)));
return inserted_it->second.get();
}
} // namespace persistent_cache
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