File: upload_provider.h

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// Copyright 2021 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_BROWSER_POLICY_MESSAGING_LAYER_UPLOAD_UPLOAD_PROVIDER_H_
#define CHROME_BROWSER_POLICY_MESSAGING_LAYER_UPLOAD_UPLOAD_PROVIDER_H_

#include <memory>
#include <string>

#include "base/memory/scoped_refptr.h"
#include "base/memory/weak_ptr.h"
#include "base/task/sequenced_task_runner.h"
#include "base/threading/platform_thread.h"
#include "chrome/browser/policy/messaging_layer/upload/upload_client.h"
#include "chrome/browser/policy/messaging_layer/util/upload_declarations.h"
#include "components/reporting/proto/synced/record.pb.h"
#include "components/reporting/resources/resource_manager.h"

namespace reporting {

// EncryptedReportingUploadProvider is an adapter for UploadClient
// which uploads reporting messages to the backend service.
class EncryptedReportingUploadProvider {
 public:
  // Resulting `UploadClient` will handle uploading requests to the
  // server. Until an `UploadClient` is built, all requests to
  // `RequestUploadEncryptedRecords` will fail.
  using UploadClientBuilderCb =
      base::OnceCallback<void(UploadClient::CreatedCallback)>;

  EncryptedReportingUploadProvider(
      ReportSuccessfulUploadCallback report_successful_upload_cb,
      EncryptionKeyAttachedCallback encryption_key_attached_cb,
      UpdateConfigInMissiveCallback update_config_in_missive_cb,
      UploadClientBuilderCb upload_client_builder_cb =
          EncryptedReportingUploadProvider::GetUploadClientBuilder());
  EncryptedReportingUploadProvider(
      const EncryptedReportingUploadProvider& other) = delete;
  EncryptedReportingUploadProvider& operator=(
      const EncryptedReportingUploadProvider& other) = delete;
  virtual ~EncryptedReportingUploadProvider();

  // Called to upload records and/or request encryption key.
  // |scoped_reservation| may be provided to control the usage
  // of memory for request building. If it is not provided, memory usage is not
  // controlled.
  void RequestUploadEncryptedRecords(bool need_encryption_key,
                                     std::vector<EncryptedRecord> records,
                                     ScopedReservation scoped_reservation,
                                     UploadEnqueuedCallback result_cb);

  base::WeakPtr<EncryptedReportingUploadProvider> GetWeakPtr();

 private:
  // EncryptedReportingUploadProvider helper class.
  class UploadHelper;

  // Default provider of upload client builder.
  static UploadClientBuilderCb GetUploadClientBuilder();

  // UploadHelper object.
  const scoped_refptr<UploadHelper> helper_;

  // Keep this last so that all weak pointers will be invalidated at the
  // beginning of destruction.
  base::WeakPtrFactory<EncryptedReportingUploadProvider> weak_ptr_factory_{
      this};
};

}  // namespace reporting

#endif  // CHROME_BROWSER_POLICY_MESSAGING_LAYER_UPLOAD_UPLOAD_PROVIDER_H_