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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_UPDATER_NET_FALLBACK_NET_FETCHER_H_
#define CHROME_UPDATER_NET_FALLBACK_NET_FETCHER_H_
#include <cstdint>
#include <memory>
#include <optional>
#include <string>
#include "base/containers/flat_map.h"
#include "base/sequence_checker.h"
#include "components/update_client/cancellation.h"
#include "components/update_client/network.h"
class GURL;
namespace base {
class FilePath;
}
namespace updater {
// A `FallbackNetFecher` contains a number of `NetworkFetchers` and falls back
// between them when one encounters an error.
class FallbackNetFetcher : public update_client::NetworkFetcher {
public:
FallbackNetFetcher() = delete;
FallbackNetFetcher(const FallbackNetFetcher&) = delete;
FallbackNetFetcher& operator=(const FallbackNetFetcher&) = delete;
~FallbackNetFetcher() override;
FallbackNetFetcher(std::unique_ptr<update_client::NetworkFetcher> impl,
std::unique_ptr<update_client::NetworkFetcher> next);
// Overrides for update_client::NetworkFetcher
void PostRequest(
const GURL& url,
const std::string& post_data,
const std::string& content_type,
const base::flat_map<std::string, std::string>& post_additional_headers,
update_client::NetworkFetcher::ResponseStartedCallback
response_started_callback,
update_client::NetworkFetcher::ProgressCallback progress_callback,
update_client::NetworkFetcher::PostRequestCompleteCallback
post_request_complete_callback) override;
base::OnceClosure DownloadToFile(
const GURL& url,
const base::FilePath& file_path,
update_client::NetworkFetcher::ResponseStartedCallback
response_started_callback,
update_client::NetworkFetcher::ProgressCallback progress_callback,
update_client::NetworkFetcher::DownloadToFileCompleteCallback
download_to_file_complete_callback) override;
private:
void ResponseStarted(update_client::NetworkFetcher::ResponseStartedCallback
response_started_callback,
int32_t http_status_code,
int64_t content_length);
void PostRequestDone(
const GURL& url,
const std::string& post_data,
const std::string& content_type,
const base::flat_map<std::string, std::string>& post_additional_headers,
update_client::NetworkFetcher::ResponseStartedCallback
response_started_callback,
update_client::NetworkFetcher::ProgressCallback progress_callback,
update_client::NetworkFetcher::PostRequestCompleteCallback
post_request_complete_callback,
std::optional<std::string> response_body,
int net_error,
const std::string& header_etag,
const std::string& header_x_cup_server_proof,
const std::string& header_set_cookie,
int64_t xheader_retry_after_sec);
void DownloadToFileDone(
const GURL& url,
const base::FilePath& file_path,
update_client::NetworkFetcher::ResponseStartedCallback
response_started_callback,
update_client::NetworkFetcher::ProgressCallback progress_callback,
update_client::NetworkFetcher::DownloadToFileCompleteCallback
download_to_file_complete_callback,
int net_error,
int64_t content_size);
SEQUENCE_CHECKER(sequence_checker_);
std::unique_ptr<update_client::NetworkFetcher> impl_;
std::unique_ptr<update_client::NetworkFetcher> next_;
int32_t http_status_code_ = 200;
scoped_refptr<update_client::Cancellation> cancellation_ =
base::MakeRefCounted<update_client::Cancellation>();
};
} // namespace updater
#endif // CHROME_UPDATER_NET_FALLBACK_NET_FETCHER_H_
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