cloud

type CloudProvider interface {
	CloudProviderBase
	CloudProviderImplementation
}

type CloudProviderBase interface {
	Save() error     // saves the instance of the cloud provider (name and credentials) in the db
	NameStr() string // returns the name of the cloud provider
	TypeStr() string // returns the string formatted cloud type
}

type CloudProviderImplementation interface {
	// Config methods
	SupportedLocations() (locations []string)                          // returns the supported locations for a specific cloud provider
	AuthFields() (fields []string)                                     // returns the fields that are required to authenticate for a specific cloud provider
	SetAuth(auth map[string]string) error                              // sets the credentials for a cloud provider
	Init() error                                                       // a cloud provider always needs to have Init called to configure it and test the credentials. If auth fails, Init should return an error
	SupportedMachines(location string) (map[string]MachineSpec, error) // returns a map of machine ids and their hardware specifications. A user will choose the machines for their instance

	// Instance methods
	NewInstance(name string, image string, pubKey string, machineType string, location string) (id string, err error)
	DeleteInstance(id string, location string) error
	StartInstance(id string, location string) error
	StopInstance(id string, location string) error
	GetInstanceInfo(id string, location string) (InstanceInfo, error)
	// Image methods
	GetImages() (images map[string]ImageInfo, err error)
	GetProtosImages() (images map[string]ImageInfo, err error)
	AddImage(url string, hash string, version string, location string) (id string, err error)
	UploadLocalImage(imagePath string, imageName string, location string, timeout time.Duration) (id string, err error)
	RemoveImage(name string, location string) error
	// Volume methods
	// - size should by provided in megabytes
	NewVolume(name string, size int, location string) (id string, err error)
	DeleteVolume(id string, location string) error
	AttachVolume(volumeID string, instanceID string, location string) error
	DettachVolume(volumeID string, instanceID string, location string) error
}

type ImageInfo struct {
	ID       string
	Name     string
	Location string
}

type InstanceInfo struct {
	ID           string
	Name         string
	PublicKey    string // ed25519 public key
	PublicIP     string // this can be a public or private IP, depending on where the device is located
	Kind         string // type of instance: local_vm, cloud_vm
	KindID       string // ID of the cloud provider or device ID for local VM
	Location     string
	Status       string
	Architecture string
	Volumes      []VolumeInfo
}

type MachineSpec struct {
	Cores                uint32  // Nr of cores
	Memory               uint32  // MiB
	DefaultStorage       uint32  // GB
	Bandwidth            uint32  // Mbit
	IncludedDataTransfer uint32  // GB. 0 for unlimited
	Baremetal            bool    // true if machine is bare metal
	PriceMonthly         float32 // no currency conversion at the moment. Each cloud reports this differently
}

type Manager struct {
	// contains filtered or unexported fields
}

type ProviderInfo struct {
	CloudProviderImplementation

	ID   string
	Name string
	Type Type
	Auth map[string]string
	// contains filtered or unexported fields
}

type Type string

type VolumeInfo struct {
	VolumeID string
	Name     string
	Size     uint64
}