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member.go
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member.go
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package replicaset
import (
"time"
"go.mongodb.org/mongo-driver/bson/primitive"
)
// See https://github.com/timvaillancourt/go-mongodb-replset
// MemberHealth ...
type MemberHealth int
// MemberState ...
type MemberState int
const (
// MemberHealthDown ...
MemberHealthDown MemberHealth = iota
// MemberHealthUp ...
MemberHealthUp
// MemberStateStartup ...
MemberStateStartup MemberState = 0
// MemberStatePrimary ...
MemberStatePrimary MemberState = 1
// MemberStateSecondary ...
MemberStateSecondary MemberState = 2
// MemberStateRecovering ...
MemberStateRecovering MemberState = 3
// MemberStateStartup2 ...
MemberStateStartup2 MemberState = 5
// MemberStateUnknown ...
MemberStateUnknown MemberState = 6
// MemberStateArbiter ...
MemberStateArbiter MemberState = 7
// MemberStateDown ...
MemberStateDown MemberState = 8
// MemberStateRollback ...
MemberStateRollback MemberState = 9
// MemberStateRemoved ...
MemberStateRemoved MemberState = 10
)
// MemberStateStrings ...
var MemberStateStrings = map[MemberState]string{
MemberStateStartup: "STARTUP",
MemberStatePrimary: "PRIMARY",
MemberStateSecondary: "SECONDARY",
MemberStateRecovering: "RECOVERING",
MemberStateStartup2: "STARTUP2",
MemberStateUnknown: "UNKNOWN",
MemberStateArbiter: "ARBITER",
MemberStateDown: "DOWN",
MemberStateRollback: "ROLLBACK",
MemberStateRemoved: "REMOVED",
}
// String ...
func (ms MemberState) String() string {
if str, ok := MemberStateStrings[ms]; ok {
return str
}
return ""
}
// Member ...
type Member struct {
ID int `bson:"_id" json:"_id"`
Name string `bson:"name" json:"name"`
Health MemberHealth `bson:"health" json:"health"`
State MemberState `bson:"state" json:"state"`
StateStr string `bson:"stateStr" json:"stateStr"`
Uptime int64 `bson:"uptime" json:"uptime"`
Optime *Optime `bson:"optime" json:"optime"`
OptimeDate time.Time `bson:"optimeDate" json:"optimeDate"`
ConfigVersion int `bson:"configVersion" json:"configVersion"`
ElectionTime primitive.Timestamp `bson:"electionTime,omitempty" json:"electionTime,omitempty"`
ElectionDate time.Time `bson:"electionDate,omitempty" json:"electionDate,omitempty"`
InfoMessage string `bson:"infoMessage,omitempty" json:"infoMessage,omitempty"`
OptimeDurable *Optime `bson:"optimeDurable,omitempty" json:"optimeDurable,omitempty"`
OptimeDurableDate time.Time `bson:"optimeDurableDate,omitempty" json:"optimeDurableDate,omitempty"`
LastHeartbeat time.Time `bson:"lastHeartbeat,omitempty" json:"lastHeartbeat,omitempty"`
LastHeartbeatRecv time.Time `bson:"lastHeartbeatRecv,omitempty" json:"lastHeartbeatRecv,omitempty"`
PingMs int64 `bson:"pingMs,omitempty" json:"pingMs,omitempty"`
Self bool `bson:"self,omitempty" json:"self,omitempty"`
SyncingTo string `bson:"syncingTo,omitempty" json:"syncingTo,omitempty"`
}
// GetSelf ...
func (s *Status) GetSelf() *Member {
for _, member := range s.Members {
if member.Self == true {
return member
}
}
return nil
}
// GetMember ...
func (s *Status) GetMember(name string) *Member {
for _, member := range s.Members {
if member.Name == name {
return member
}
}
return nil
}
// HasMember ...
func (s *Status) HasMember(name string) bool {
return s.GetMember(name) != nil
}
// GetMemberID ...
func (s *Status) GetMemberID(id int) *Member {
for _, member := range s.Members {
if member.ID == id {
return member
}
}
return nil
}
// GetMembersByState ...
func (s *Status) GetMembersByState(state MemberState, limit int) []*Member {
members := make([]*Member, 0)
for _, member := range s.Members {
if member.State == state {
members = append(members, member)
if limit > 0 && len(members) == limit {
return members
}
}
}
return members
}
// Primary ...
func (s *Status) Primary() *Member {
primary := s.GetMembersByState(MemberStatePrimary, 1)
if len(primary) == 1 {
return primary[0]
}
return nil
}
// Secondaries ...
func (s *Status) Secondaries() []*Member {
return s.GetMembersByState(MemberStateSecondary, 0)
}