nodecontrol

type Capability struct {
	Key       string `json:"key"`
	Scope     string `json:"scope"`
	Supported bool   `json:"supported"`
	Reason    string `json:"reason"`
}

type Control struct {
	NodeID           string       `json:"nodeId"`
	Boot             string       `json:"boot"`
	RequestedVersion int64        `json:"requestedVersion"`
	AppliedVersion   int64        `json:"appliedVersion"`
	State            string       `json:"state"`
	RequestID        string       `json:"requestId,omitempty"`
	ErrorCode        string       `json:"errorCode,omitempty"`
	UpdatedAt        time.Time    `json:"updatedAt"`
	Observed         Observed     `json:"observed"`
	Capabilities     []Capability `json:"capabilities"`
}

type Observed struct {
	Weight   int  `json:"weight"`
	Draining bool `json:"draining"`
}

type Patch struct {
	Weight   *int  `json:"weight,omitempty"`
	Draining *bool `json:"draining,omitempty"`
}

type Request struct {
	RequestID       string `json:"requestId"`
	Boot            string `json:"boot"`
	ExpectedVersion int64  `json:"expectedVersion"`
	Patch           Patch  `json:"patch"`
}

type Service struct {
	Store        *clusterconfig.NodeControls
	Bus          clusterbus.Bus
	NodeID, Boot string
	Target       Target
}

type Target interface {
	Observe() (Observed, []Capability)
	Apply(context.Context, Patch) string
}