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update.go
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update.go
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package service
import (
"github.com/boivie/lovebeat/model"
)
func addAlarmsToService(state *servicesState, svc *service, prevUpdates []stateUpdate) (updates []stateUpdate) {
updates = prevUpdates
for _, tmpl := range state.alarmTemplates {
name := tmpl.makeName(svc.data.Name)
if name != "" {
a, exists := state.alarms[name]
if !exists {
a = &alarm{tmpl: tmpl, data: model.Alarm{
Name: name,
State: model.StateNew,
IncidentNbr: 0,
}}
for _, existingAlarm := range state.alarmStates {
if existingAlarm.Name == name {
a.data = *existingAlarm
}
}
state.alarms[name] = a
alarmCopy := *a
updates = append(updates, stateUpdate{oldAlarm: nil, newAlarm: &alarmCopy})
}
a.servicesInAlarm = append(a.servicesInAlarm, svc)
svc.inAlarms = append(svc.inAlarms, a)
}
}
return
}
func removeAlarmsFromService(state *servicesState, svc *service, prevUpdates []stateUpdate) (updates []stateUpdate) {
updates = prevUpdates
for _, alarm := range svc.inAlarms {
var remainingServices []*service
for _, s := range alarm.servicesInAlarm {
if s != svc {
remainingServices = append(remainingServices, s)
}
}
alarm.servicesInAlarm = remainingServices
}
return
}
func updateServices(state *servicesState, cmd *model.Update) (updates []stateUpdate) {
if cmd.Tick != nil {
for _, service := range state.services {
if service.data.State != service.stateAt(cmd.Ts) {
var ref = *service
service.data.State = service.stateAt(cmd.Ts)
service.data.LastStateChange = cmd.Ts
updates = append(updates, stateUpdate{oldService: &ref, newService: service})
}
}
} else if cmd.Service != "" {
updated := false
var old *service
service := state.services[cmd.Service]
if service == nil {
service = newService(cmd.Service)
state.services[cmd.Service] = service
updates = addAlarmsToService(state, service, updates)
updated = true
} else {
var r = *service
old = &r
}
if cmd.Beat != nil && (cmd.Ts-service.data.LastBeat) >= 1000 {
service.registerBeat(cmd.Ts)
updated = true
}
if cmd.SetTimeout != nil && service.data.Timeout != cmd.SetTimeout.Timeout {
service.data.Timeout = cmd.SetTimeout.Timeout
updated = true
}
if cmd.MuteService != nil {
if cmd.MuteService.Muted && service.data.MutedSince == 0 {
service.data.MutedSince = cmd.Ts
updated = true
} else if !cmd.MuteService.Muted && service.data.MutedSince != 0 {
service.data.MutedSince = 0
updated = true
}
}
if cmd.DeleteService != nil {
updates = removeAlarmsFromService(state, service, updates)
delete(state.services, service.name())
service = nil
updated = old != nil
}
if service != nil {
service.updateExpiry()
state := service.stateAt(cmd.Ts)
if state != service.data.State {
service.data.State = state
service.data.LastStateChange = cmd.Ts
updated = true
}
}
if updated {
updates = append(updates, stateUpdate{oldService: old, newService: service})
}
}
return
}
func removeAlarms(state *servicesState, c *model.Update, prevUpdates []stateUpdate) (updates []stateUpdate) {
updates = prevUpdates
if c.DeleteAlarm != nil {
alarm, exist := state.alarms[c.Alarm]
if exist && len(alarm.servicesInAlarm) == 0 {
delete(state.alarms, c.Alarm)
updates = append(updates, stateUpdate{oldAlarm: alarm, newAlarm: nil})
}
}
return
}
func updateAlarms(state *servicesState, ts int64, prevUpdates []stateUpdate) (updates []stateUpdate) {
updates = prevUpdates
for _, update := range prevUpdates {
service := update.newService
if service == nil {
service = update.oldService
}
if service != nil {
for _, alarm := range service.inAlarms {
newState := alarm.calculateState()
if alarm.data.State != newState {
ref := *alarm
alarm.data.State = newState
alarm.data.LastStateChange = ts
if ref.data.State == model.StateOk || ref.data.State == model.StateNew {
alarm.data.IncidentNbr += 1
}
updates = append(updates, stateUpdate{oldAlarm: &ref, newAlarm: alarm})
}
}
}
}
return
}