server

type Account interface {
	Credentials() (AccountCredentials, error)
	ResourceGroup() (AccountResourceGroup, error)
}

type AccountCredentials interface {
	Customer() (credentials map[string]string)
	Admin() (credentials map[string]string)
}

type AccountResourceGroup interface {
	ListResources() []uint64
	SelectedResources(res ...string) map[uint64]*Resource
}

type ProvisioningServer interface {

	// ResourceGroup() shows usage statistics of all allocatable resources on the server
	ResourceGroup() ServerResourceGroup

	// CreateAccount() utilizes internal server configuration and aconf pased in to create a series of accounts with
	// same sconf and variable aconf in order.
	CreateAccount(productID uint64, accountConfiguration interface{}) error

	// ReadAccount() returns an ServerAccount-compatible struct
	GetAccount(productID uint64) (Account, error)

	// UpdateAccount() utilizes internal server configuration and aconf pased in to update a series of accounts
	// specified by productID.
	UpdateAccount(productID uint64, accountConfiguration interface{}) error

	// DeleteAccount() utilizes internal server configuration to delete a series of accounts specified by accID.
	DeleteAccount(productID uint64) error

	// Temporarily disable an account from being used or recover it
	SuspendAccount(productID uint64) error
	UnsuspendAccount(productID uint64) error

	// PurgeResourceUsage sets all USED resource counter to 0 for all users.
	// usecase: clean-reinstall
	// Won't be automatically called on a time-basis. Not a cronjob mounting point.
	PurgeResourceUsage()
}

type ProvisioningServerGen func(db *sql.DB, instanceID string, serverConfiguration interface{}) (ProvisioningServer, error)

type Resource struct {
	ResID     uint64
	Allocated float64
	Used      float64
}

type ServerResourceAllocation struct {
	UserAllocatedPercentageMap map[uint64]float64 // uint64 is user id
	UserConsumedPercentageMap  map[uint64]float64 // uint64 is user id
}

type ServerResourceGroup interface {
	ListResources() []uint64                              // uint64 is enum of resource name
	SelectedResources(res ...uint64) map[uint64]*Resource // uint64 is enum of resource name

	ResourceAllocations(res ...uint64) map[uint64]*ServerResourceAllocation //	uint64 is enum of resource name
}