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membership.go
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74 lines (60 loc) · 1.28 KB
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package segmenter
type reason string
const join reason = "join"
const leave reason = "leave"
type member struct {
ID string `json:"consumerId"`
JoinedAt int64 `json:"joinedAt"`
Partitions partitions `json:"partitions"`
Group string `json:"group"`
}
type memberChangeInfo struct {
Reason reason `json:"reason"`
ConsumerId string `json:"consumerId"`
Group string `json:"group"`
Ts int64 `json:"ts"`
}
type members []member
func (ms members) Contains(memberId string) bool {
for _, m := range ms {
if m.ID == memberId {
return true
}
}
return false
}
func (ms members) Add(member member) members {
return append(ms, member)
}
func (ms members) Remove(mid string) members {
idx := -1
for i, m := range ms {
if m.ID == mid {
idx = i
}
}
if idx < 0 {
return ms
}
return append(ms[:idx], ms[idx+1:]...)
}
func (ms members) Len() int {
return len(ms)
}
func (ms members) Less(i, j int) bool {
return ms[i].JoinedAt < ms[j].JoinedAt
}
func (ms members) Swap(i, j int) {
ms[i], ms[j] = ms[j], ms[i]
}
func (ms members) RemoveAll(members members) members {
removed := make([]member, ms.Len()-members.Len())
idx := 0
for _, m := range ms {
if !members.Contains(m.ID) {
removed[idx] = m
idx++
}
}
return removed
}