ladybird/Libraries/LibHTTP/Cache/MemoryCache.h
Andreas Kling 54d2395a03 LibWeb: Preserve file-backed HTTP cache bodies
Carry response chunks through LibRequests and ResourceLoader as a
ResponseData wrapper. A disk cache hit can retain its mapped storage,
while ordinary streamed chunks still use borrowed bytes.

Store completed memory cache entries as Core::ImmutableBytes. This lets
mapped disk-cache responses stay file-backed while retained by the HTTP
memory cache, instead of forcing another ByteBuffer copy.
2026-05-16 08:13:35 +02:00

48 lines
1.5 KiB
C++

/*
* Copyright (c) 2025-2026, Tim Flynn <trflynn89@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/ByteString.h>
#include <AK/HashMap.h>
#include <AK/NonnullRefPtr.h>
#include <AK/RefCounted.h>
#include <AK/Time.h>
#include <LibCore/ImmutableBytes.h>
#include <LibHTTP/Cache/CacheMode.h>
#include <LibHTTP/Forward.h>
#include <LibURL/URL.h>
namespace HTTP {
class MemoryCache : public RefCounted<MemoryCache> {
public:
struct Entry {
u64 vary_key { 0 };
u32 status_code { 0 };
ByteString reason_phrase;
NonnullRefPtr<HeaderList> request_headers;
NonnullRefPtr<HeaderList> response_headers;
Core::ImmutableBytes response_body;
UnixDateTime request_time;
UnixDateTime response_time;
};
static NonnullRefPtr<MemoryCache> create();
Optional<Entry const&> open_entry(URL::URL const&, StringView method, HeaderList const& request_headers, CacheMode);
void create_entry(URL::URL const&, StringView method, HeaderList const& request_headers, UnixDateTime request_time, u32 status_code, ByteString reason_phrase, HeaderList const& response_headers);
void finalize_entry(URL::URL const&, StringView method, HeaderList const& request_headers, u32 status_code, HeaderList const& response_headers, Core::ImmutableBytes response_body);
private:
HashMap<u64, Vector<Entry>, IdentityHashTraits<u64>> m_pending_entries;
HashMap<u64, Vector<Entry>, IdentityHashTraits<u64>> m_complete_entries;
};
}