Project import generated by Copybara.
PiperOrigin-RevId: 237361882
Change-Id: I109a68f44db867b20f8c6a7732b0ce657133e52a
diff --git a/quic/tools/quic_simple_server_backend.h b/quic/tools/quic_simple_server_backend.h
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+// Copyright (c) 2012 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 QUICHE_QUIC_TOOLS_QUIC_SIMPLE_SERVER_BACKEND_H_
+#define QUICHE_QUIC_TOOLS_QUIC_SIMPLE_SERVER_BACKEND_H_
+
+#include "net/third_party/quiche/src/quic/tools/quic_backend_response.h"
+
+namespace spdy {
+class SpdyHeaderBlock;
+} // namespace spdy
+
+namespace quic {
+
+// This interface implements the functionality to fetch a response
+// from the backend (such as cache, http-proxy etc) to serve
+// requests received by a Quic Server
+class QuicSimpleServerBackend {
+ public:
+ // This interface implements the methods
+ // called by the QuicSimpleServerBackend implementation
+ // to process the request in the backend
+ class RequestHandler {
+ public:
+ virtual ~RequestHandler() {}
+
+ virtual QuicConnectionId connection_id() const = 0;
+ virtual QuicStreamId stream_id() const = 0;
+ virtual QuicString peer_host() const = 0;
+ // Called when the response is ready at the backend and can be send back to
+ // the QUIC client.
+ virtual void OnResponseBackendComplete(
+ const QuicBackendResponse* response,
+ std::list<QuicBackendResponse::ServerPushInfo> resources) = 0;
+ };
+
+ virtual ~QuicSimpleServerBackend() = default;
+ // This method initializes the backend instance to fetch responses
+ // from a backend server, in-memory cache etc.
+ virtual bool InitializeBackend(const QuicString& backend_url) = 0;
+ // Returns true if the backend has been successfully initialized
+ // and could be used to fetch HTTP requests
+ virtual bool IsBackendInitialized() const = 0;
+ // Triggers a HTTP request to be sent to the backend server or cache
+ // If response is immediately available, the function synchronously calls
+ // the |request_handler| with the HTTP response.
+ // If the response has to be fetched over the network, the function
+ // asynchronously calls |request_handler| with the HTTP response.
+ virtual void FetchResponseFromBackend(
+ const spdy::SpdyHeaderBlock& request_headers,
+ const QuicString& request_body,
+ RequestHandler* request_handler) = 0;
+ // Clears the state of the backend instance
+ virtual void CloseBackendResponseStream(RequestHandler* request_handler) = 0;
+};
+
+} // namespace quic
+
+#endif // QUICHE_QUIC_TOOLS_QUIC_SIMPLE_SERVER_BACKEND_H_
