You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 

52 lines
1.8 KiB

// Package rings provides logic to work with the four rings
// of a cluster
package rings
import (
"syscall"
"darvaza.org/core"
)
const (
// RegionMax indicates the highest number that can be used for a [RegionID].
RegionMax = (1 << 4) - 1
// ZoneMax indicates the highest number that can be used for a [ZoneID].
ZoneMax = (1 << 4) - 1
// NodeMax indicates the highest number that can be used for a [NodeID].
NodeMax = (1 << 12) - 1
// NodeZeroMax indicates the highest number that can be used for a [NodeID]
// when its a gateway connected to Ring 0 (backbone).
NodeZeroMax = (1 << 8) - 1
// RingOneBits indicates the size of the prefix on the ring 1 (lan) network.
RingOneBits = 20
)
// RegionID is the identifier of a region, valid between 1 and [RegionMax].
type RegionID int
// Valid tells a [RegionID] is within the valid range.
func (n RegionID) Valid() bool { return n > 0 && n <= RegionMax }
// ZoneID is the identifier of a zone within a region, valid between 1 and [ZoneMax].
type ZoneID int
// Valid tells a [ZoneID] is within the valid range.
func (n ZoneID) Valid() bool { return n > 0 && n <= ZoneMax }
// NodeID is the identifier of a machine within a zone of a region, valid between
// 1 and [NodeMax], but between 1 and [NodeZeroMax] if it will be a zone gateway.
type NodeID int
// Valid tells a [NodeID] is within the valid range.
func (n NodeID) Valid() bool { return n > 0 && n <= NodeMax }
// ValidZero tells a [NodeID] is within the valid range for a gateway.
func (n NodeID) ValidZero() bool { return n > 0 && n <= NodeZeroMax }
// ErrOutOfRange is an error indicating the value of a field
// is out of range.
func ErrOutOfRange[T ~int | ~uint32](value T, field string) error {
return core.Wrap(syscall.EINVAL, "%s out of range (%v)", field, value)
}