func NewMonitor(sentinel types.Sentinel, manager Manager, redisConnection redis.RedisConnection) (*Monitor, error) {
uri := sentinel.GetLocation()
channel := make(chan redis.RedisPubSubReply)
pubSubClient, err := redis.NewPubSubClient(uri, channel, redisConnection)
if err != nil {
return nil, err
}
client, err := redis.NewSentinelClient(sentinel, redisConnection)
if err != nil {
return nil, err
}
monitor := &Monitor{pubSubClient: pubSubClient,
client: client,
channel: channel,
manager: manager,
sentinel: sentinel,
redisConnection: redisConnection}
return monitor, nil
}
func (m *SentinelManager) getTopology(stateChannel chan types.MasterDetailsCollection) {
topology := types.NewMasterDetailsCollection()
configuration := m.configurationManager.GetCurrentConfiguration()
for _, sentinel := range configuration.Sentinels {
client, err := redis.NewSentinelClient(sentinel, m.redisConnection)
if err != nil {
logger.Info.Printf("Error starting sentinel (%s) client : %s", sentinel.GetLocation(), err.Error())
continue
}
defer client.Close()
for _, clusterDetails := range configuration.Clusters {
details, err := client.DiscoverMasterForCluster(clusterDetails.Name)
if err != nil {
continue
}
details.ExternalPort = clusterDetails.ExternalPort
// TODO : last one wins?
topology.AddOrReplace(details)
}
}
stateChannel <- topology
}