//Select returns a rpc client
func (s *EtcdClientSelector) Select(clientCodecFunc rpcx.ClientCodecFunc, options ...interface{}) (*rpc.Client, error) {
if s.SelectMode == rpcx.RandomSelect {
s.currentServer = s.rnd.Intn(s.len)
server := s.Servers[s.currentServer]
fmt.Printf("server: %s\n\n", server)
ss := strings.Split(server, "@") //tcp@ip , tcp4@ip or tcp6@ip
return rpcx.NewDirectRPCClient(s.Client, clientCodecFunc, ss[0], ss[1], s.timeout)
} else if s.SelectMode == rpcx.RandomSelect {
s.currentServer = (s.currentServer + 1) % s.len //not use lock for performance so it is not precise even
server := s.Servers[s.currentServer]
ss := strings.Split(server, "@") //
return rpcx.NewDirectRPCClient(s.Client, clientCodecFunc, ss[0], ss[1], s.timeout)
} else if s.SelectMode == rpcx.ConsistentHash {
if s.HashServiceAndArgs == nil {
s.HashServiceAndArgs = JumpConsistentHash
}
s.currentServer = s.HashServiceAndArgs(s.len, options)
server := s.Servers[s.currentServer]
ss := strings.Split(server, "@") //
return rpcx.NewDirectRPCClient(s.Client, clientCodecFunc, ss[0], ss[1], s.timeout)
}
return nil, errors.New("not supported SelectMode: " + s.SelectMode.String())
}
//Select returns a rpc client
func (s *MultiClientSelector) Select(clientCodecFunc rpcx.ClientCodecFunc, options ...interface{}) (*rpc.Client, error) {
if s.SelectMode == rpcx.RandomSelect {
s.currentServer = s.rnd.Intn(s.len)
pair := s.Servers[s.currentServer]
return rpcx.NewDirectRPCClient(s.Client, clientCodecFunc, pair.Network, pair.Address, s.timeout)
} else if s.SelectMode == rpcx.RoundRobin {
s.currentServer = (s.currentServer + 1) % s.len //not use lock for performance so it is not precise even
pair := s.Servers[s.currentServer]
return rpcx.NewDirectRPCClient(s.Client, clientCodecFunc, pair.Network, pair.Address, s.timeout)
} else if s.SelectMode == rpcx.ConsistentHash {
if s.HashServiceAndArgs == nil {
s.HashServiceAndArgs = JumpConsistentHash
}
s.currentServer = s.HashServiceAndArgs(s.len, options...)
pair := s.Servers[s.currentServer]
return rpcx.NewDirectRPCClient(s.Client, clientCodecFunc, pair.Network, pair.Address, s.timeout)
}
return nil, errors.New("not supported SelectMode: " + s.SelectMode.String())
}