func (c *cluster) refreshNodeList(nodeID, self string) {
found := false
c.nodesLock.Lock()
// Expire unreachable nodes
for i := 0; i < len(c.nodes); i++ {
if utils.ElapsedSec(c.nodes[i].LastAnnounce, 5) && c.nodes[i].ID != nodeID && c.nodes[i].ID != self {
log.Noticef("<- Node %s left the cluster", c.nodes[i].ID)
c.nodes = append(c.nodes[:i], c.nodes[i+1:]...)
i--
} else if c.nodes[i].ID == nodeID {
found = true
c.nodes[i].LastAnnounce = time.Now().UTC().Unix()
}
}
// Join new node
if !found {
if nodeID != self {
log.Noticef("-> Node %s joined the cluster", nodeID)
}
n := Node{
ID: nodeID,
LastAnnounce: time.Now().UTC().Unix(),
}
// TODO use binary search here
// See https://golang.org/pkg/sort/#Search
c.nodes = append(c.nodes, n)
sort.Sort(ByNodeID(c.nodes))
}
c.nodeTotal = len(c.nodes)
// TODO use binary search here
// See https://golang.org/pkg/sort/#Search
for i, n := range c.nodes {
if n.ID == self {
c.nodeIndex = i
break
}
}
c.nodesLock.Unlock()
}
func (m *Mirror) NeedSync() bool {
return utils.ElapsedSec(m.LastSync, int64(60*GetConfig().ScanInterval))
}
func (m *Mirror) NeedHealthCheck() bool {
return utils.ElapsedSec(m.lastCheck, int64(60*GetConfig().CheckInterval))
}