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model.go
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model.go
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package scyllaclient
import (
"fmt"
"strings"
)
// NodeStatus represents nodetool Status=Up/Down.
type NodeStatus bool
// NodeStatus enumeration
const (
NodeStatusUp NodeStatus = true
NodeStatusDown NodeStatus = false
)
func (s NodeStatus) String() string {
if s {
return "U"
}
return "D"
}
// NodeState represents nodetool State=Normal/Leaving/Joining/Moving
type NodeState string
// NodeState enumeration
const (
NodeStateNormal NodeState = ""
NodeStateLeaving NodeState = "LEAVING"
NodeStateJoining NodeState = "JOINING"
NodeStateMoving NodeState = "MOVING"
)
func (s NodeState) String() string {
switch s {
case NodeStateNormal:
return "N"
case NodeStateLeaving:
return "L"
case NodeStateJoining:
return "J"
case NodeStateMoving:
return "M"
}
return ""
}
type OperationalMode string
const (
OperationalModeClient OperationalMode = "CLIENT"
OperationalModeDecommissioned OperationalMode = "DECOMMISSIONED"
OperationalModeDecommissioning OperationalMode = "DECOMMISSIONING"
OperationalModeJoining OperationalMode = "JOINING"
OperationalModeLeaving OperationalMode = "LEAVING"
OperationalModeNormal OperationalMode = "NORMAL"
OperationalModeDrained OperationalMode = "DRAINED"
OperationalModeDraining OperationalMode = "DRAINING"
OperationalModeUnknown OperationalMode = "UNKNOWN"
)
var (
operationalModeMap = map[string]OperationalMode{
"CLIENT": OperationalModeClient,
"DECOMMISSIONED": OperationalModeDecommissioned,
"DECOMMISSIONING": OperationalModeDecommissioning,
"JOINING": OperationalModeJoining,
"LEAVING": OperationalModeLeaving,
"DRAINED": OperationalModeDrained,
"DRAINING": OperationalModeDraining,
"NORMAL": OperationalModeNormal,
}
)
func (o OperationalMode) String() string {
switch o {
case "CLIENT", "DECOMMISSIONED", "DECOMMISSIONING", "JOINING", "LEAVING", "NORMAL", "DRAINED", "DRAINING":
return string(o)
default:
return "UNKNOWN"
}
}
func (o OperationalMode) IsDecommissioned() bool {
return o == OperationalModeDecommissioned
}
func (o OperationalMode) IsDecommissioning() bool {
return o == OperationalModeDecommissioned
}
func (o OperationalMode) IsLeaving() bool {
return o == OperationalModeLeaving
}
func (o OperationalMode) IsNormal() bool {
return o == OperationalModeNormal
}
func (o OperationalMode) IsJoining() bool {
return o == OperationalModeJoining
}
func (o OperationalMode) IsDrained() bool {
return o == OperationalModeDrained
}
func (o OperationalMode) IsDraining() bool {
return o == OperationalModeDraining
}
func operationalModeFromString(str string) OperationalMode {
if om, ok := operationalModeMap[strings.ToUpper(str)]; ok {
return om
}
return OperationalModeUnknown
}
type CompactionType string
const (
CompactionCompactionType CompactionType = "COMPACTION"
CleanupCompactionType CompactionType = "CLEANUP"
ScrubCompactionType CompactionType = "SCRUB"
UpgradeCompactionType CompactionType = "UPGRADE"
ReshapeCompactionType CompactionType = "RESHAPE"
)
// NodeStatusInfo represents a nodetool status line.
type NodeStatusInfo struct {
HostID string
Addr string
Status NodeStatus
State NodeState
}
func (s NodeStatusInfo) String() string {
return fmt.Sprintf("host: %s, Status: %s%s", s.Addr, s.Status, s.State)
}
// IsUN returns true if host is Up and NORMAL meaning it's a fully functional
// live node.
func (s NodeStatusInfo) IsUN() bool {
return s.Status == NodeStatusUp && s.State == NodeStateNormal
}
// NodeStatusInfoSlice adds functionality to Status response.
type NodeStatusInfoSlice []NodeStatusInfo
// Hosts returns slice of address of all nodes.
func (s NodeStatusInfoSlice) Hosts() []string {
var hosts []string
for _, h := range s {
hosts = append(hosts, h.Addr)
}
return hosts
}
// LiveHosts returns slice of address of nodes in UN state.
func (s NodeStatusInfoSlice) LiveHosts() []string {
var hosts []string
for _, h := range s {
if h.IsUN() {
hosts = append(hosts, h.Addr)
}
}
return hosts
}
// DownHosts returns slice of address of nodes that are down.
func (s NodeStatusInfoSlice) DownHosts() []string {
var hosts []string
for _, h := range s {
if h.Status == NodeStatusDown {
hosts = append(hosts, h.Addr)
}
}
return hosts
}