1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 #pragma once 17 18 #include <map> 19 #include <string> 20 #include <utility> 21 #include <vector> 22 23 #include <common/libs/utils/subprocess.h> 24 #include <host/libs/config/cuttlefish_config.h> 25 26 namespace vm_manager { 27 28 // Superclass of every guest VM manager. It provides a static getter that 29 // returns the requested vm manager as a singleton. 30 class VmManager { 31 public: 32 // Returns the most suitable vm manager as a singleton. It may return nullptr 33 // if the requested vm manager is not supported by the current version of the 34 // host packages 35 static VmManager* Get(const std::string& vm_manager_name, 36 const vsoc::CuttlefishConfig* config); 37 static bool IsValidName(const std::string& name); 38 static void ConfigureBootDevices(vsoc::CuttlefishConfig* config); 39 static bool IsVmManagerSupported(const std::string& name); 40 static std::vector<std::string> GetValidNames(); 41 42 virtual ~VmManager() = default; 43 44 virtual cvd::Command StartCommand() = 0; 45 virtual bool Stop() = 0; 46 47 virtual bool ValidateHostConfiguration( 48 std::vector<std::string>* config_commands) const; 49 50 protected: 51 static bool UserInGroup(const std::string& group, 52 std::vector<std::string>* config_commands); 53 const vsoc::CuttlefishConfig* config_; 54 VmManager(const vsoc::CuttlefishConfig* config); 55 56 private: 57 struct VmManagerHelper { 58 // The singleton implementation 59 std::function<VmManager*(const vsoc::CuttlefishConfig*)> builder; 60 // Whether the host packages support this vm manager 61 std::function<bool()> support_checker; 62 std::function<void(vsoc::CuttlefishConfig*)> configure_boot_devices; 63 }; 64 // Asociates a vm manager helper to every valid vm manager name 65 static std::map<std::string, VmManagerHelper> vm_manager_helpers_; 66 }; 67 68 } // namespace vm_manager 69