func (ev *HistoryEvent) persistEvent(c redis.Client) {
// Get new ever-incrementing event id
id, err := c.Incr(HISTORY_KEY)
if err != nil {
log.Err(err.Error())
return
}
// Persist to object internally
ev.Id = id
// New key
historyKey := HISTORY_BASE + ":id:" + string(id)
ev.HistoryKey = historyKey
// Persist values to history key
ev.PersistAtomicHistoryKV(c, "timestamp", []byte(ev.Timestamp.String()))
// TODO: FIXME: More keys
// Build additional indices...
// 1. Master index.
_, err = c.Zadd(HISTORY_LIST, float64(ev.Timestamp.Unix()), []byte(historyKey))
if err != nil {
log.Err(err.Error())
}
// 2. Date index
log.Info("Logging to " + HISTORY_LIST + ":date:" + ev.Timestamp.Format("%Y-%m-%d"))
_, err = c.Zadd(HISTORY_LIST+":date:"+ev.Timestamp.Format("%Y-%m-%d"), float64(ev.Timestamp.Unix()), []byte(historyKey))
if err != nil {
log.Err(err.Error())
}
// 3. Host index
log.Info("Logging to " + HISTORY_LIST + ":host:" + ev.Host)
_, err = c.Zadd(HISTORY_LIST+":host:"+ev.Host, float64(ev.Timestamp.Unix()), []byte(historyKey))
if err != nil {
log.Err(err.Error())
}
// 4. Check index
log.Info("Logging to " + HISTORY_LIST + ":check:" + ev.Check)
_, err = c.Zadd(HISTORY_LIST+":check:"+ev.Check, float64(ev.Timestamp.Unix()), []byte(historyKey))
if err != nil {
log.Err(err.Error())
}
}
// Attempt to use SETNX to assert that we have the control thread.
// If this happens, we have to set the expiration time.
func grabControlThread(c redis.Client) bool {
val, err := c.Setnx(CONTROL_THREAD_LOCK, []byte(fmt.Sprint(*hostId)))
if err == nil {
if val {
// New lock acquired, attempt to set expiry properly
log.Info("grabControlThread: Acquired lock")
c.Expire(CONTROL_THREAD_LOCK, CONTROL_THREAD_EXPIRY)
return true
} else {
// Already there
return false
}
} else {
log.Err("grabControlThread: " + err.Error())
return true
}
log.Warning("grabControlThread: Should never get here, defaulting to false")
return false
}
func getContact(c redis.Client, name string) Contact {
contact := Contact{}
items, err := c.Hgetall(CONTACT_PREFIX + ":" + name)
if err == nil {
for j := 0; j < len(items)/2; j += 2 {
k := string(items[j])
v := string(items[j+1])
switch k {
case "name":
{
contact.Name = v
}
case "email":
{
contact.EmailAddress = v
}
}
}
}
return contact
}
func (ev *HistoryEvent) PersistAtomicHistoryKV(c redis.Client, k string, v []byte) {
err := c.Hset(ev.HistoryKey, k, v)
if err != nil {
log.Err(fmt.Sprintf("Error persisting %s k %s v %s", ev.HistoryKey, k, v))
}
}
func extendControlExpiry(c redis.Client) {
c.Expire(CONTROL_THREAD_LOCK, CONTROL_THREAD_EXPIRY)
}