////定义了集群内发生事件的各种事件类型
package core

type IEvent interface {
	HappenTime() int64
	ObjectType() EventObjectType
}

type EventObjectType uint8

const (
	E_MACHINE EventObjectType = iota
	E_INSTANCE
)

type Event struct {
	Time   int64
	Object EventObjectType
}

func (e *Event) HappenTime() int64 {
	return e.Time
}

func (e *Event) ObjectType() EventObjectType {
	return e.Object
}

type InstanceEvent struct {
	Event
	Type          int64
	InstanceId    InstanceKey
	CpuRequest    float64
	RamRequest    float64
	MachineID     MachineID
	AllocID       int64
	ScheduleClass int64
	Priority      int64
}

const (
	INSTANCESubmit        int64 = 0
	INSTANCEQueue         int64 = 1
	INSTANCEEnable        int64 = 2
	INSTANCESchdule       int64 = 3
	INSTANCEEvict         int64 = 4
	INSTANCEFail          int64 = 5
	INSTANCEFinish        int64 = 6
	INSTANCEKill          int64 = 7
	INSTANCELost          int64 = 8
	INSTANCEUpdatePending int64 = 9
	INSTANCEUpdateRunning int64 = 10
)

type UsageEvent struct {
	Event
	InstanceId InstanceKey
	CpuUsage   float64
	RamUsage   float64
	MachineID  int64
}

const (
	MACHINEAdd    int64 = 1
	MACHINEDelete int64 = 2
	MACHINEUpdate int64 = 3
)

type MachineEvent struct {
	Event
	MachineId   MachineID
	Type        int64
	CpuCapacity float64
	RamCapacity float64
}