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// Copyright 2020 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_ASH_BOREALIS_BOREALIS_CONTEXT_MANAGER_H_
#define CHROME_BROWSER_ASH_BOREALIS_BOREALIS_CONTEXT_MANAGER_H_
#include "base/functional/callback.h"
#include "base/functional/callback_helpers.h"
#include "base/types/expected.h"
#include "chrome/browser/ash/borealis/borealis_metrics.h"
#include "chrome/browser/ash/borealis/infra/described.h"
#include "components/keyed_service/core/keyed_service.h"
namespace borealis {
class BorealisContext;
class BorealisContextManager : public KeyedService {
public:
// An attempt to launch borealis. If the launch succeeds, holds a reference to
// the context created for that launch, otherwise holds an error.
using ContextOrFailure =
base::expected<BorealisContext*, Described<BorealisStartupResult>>;
// Convenience definition for the callback provided by clients wanting to
// launch borealis.
using ResultCallback = base::OnceCallback<void(ContextOrFailure)>;
BorealisContextManager() = default;
BorealisContextManager(const BorealisContextManager&) = delete;
BorealisContextManager& operator=(const BorealisContextManager&) = delete;
~BorealisContextManager() override = default;
// Starts the Borealis VM and/or runs the callback when it is running.
virtual void StartBorealis(ResultCallback callback) = 0;
// Returns true if the VM is currently running.
virtual bool IsRunning() = 0;
// Stop the current running state, re-initializing the context manager
// to the state it was in prior to being started. All pending callbacks are
// invoked with kCancelled result. Invokes |on_shutdown_callback| with the
// result of the operation when it completes.
virtual void ShutDownBorealis(
base::OnceCallback<void(BorealisShutdownResult)> on_shutdown_callback =
base::DoNothing()) = 0;
};
} // namespace borealis
#endif // CHROME_BROWSER_ASH_BOREALIS_BOREALIS_CONTEXT_MANAGER_H_
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