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/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <map>
#include <string>
#include <utility>
#include <vector>
#include <common/libs/utils/subprocess.h>
#include <host/libs/config/cuttlefish_config.h>
namespace vm_manager {
// Superclass of every guest VM manager. It provides a static getter that
// returns the requested vm manager as a singleton.
class VmManager {
public:
// Returns the most suitable vm manager as a singleton. It may return nullptr
// if the requested vm manager is not supported by the current version of the
// host packages
static VmManager* Get(const std::string& vm_manager_name,
const vsoc::CuttlefishConfig* config);
static bool IsValidName(const std::string& name);
static bool ConfigureGpuMode(vsoc::CuttlefishConfig* config);
static void ConfigureBootDevices(vsoc::CuttlefishConfig* config);
static bool IsVmManagerSupported(const std::string& name);
static std::vector<std::string> GetValidNames();
virtual ~VmManager() = default;
// Starts the VMM. It will usually build a command and pass it to the
// command_starter function, although it may start more than one. The
// command_starter function allows to customize the way vmm commands are
// started/tracked/etc.
virtual std::vector<cvd::Command> StartCommands(bool with_frontend) = 0;
virtual bool ValidateHostConfiguration(
std::vector<std::string>* config_commands) const;
protected:
static bool UserInGroup(const std::string& group,
std::vector<std::string>* config_commands);
static bool LinuxVersionAtLeast4_8(std::vector<std::string>* config_commands);
const vsoc::CuttlefishConfig* config_;
VmManager(const vsoc::CuttlefishConfig* config);
private:
struct VmManagerHelper {
// The singleton implementation
std::function<VmManager*(const vsoc::CuttlefishConfig*)> builder;
// Whether the host packages support this vm manager
std::function<bool()> support_checker;
std::function<bool(vsoc::CuttlefishConfig*)> configure_gpu_mode;
std::function<void(vsoc::CuttlefishConfig*)> configure_boot_devices;
};
// Asociates a vm manager helper to every valid vm manager name
static std::map<std::string, VmManagerHelper> vm_manager_helpers_;
};
} // namespace vm_manager
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