open-nomad/client/rpc_proxy/server_endpoint.go

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package rpc_proxy
import (
"fmt"
"net"
"strings"
)
const (
defaultNomadRPCPort = "4647"
)
// EndpointKey is used in maps and for equality tests. A key is based on endpoints.
type EndpointKey struct {
name string
}
// Equal compares two EndpointKey objects
func (k *EndpointKey) Equal(x *EndpointKey) bool {
return k.name == x.name
}
// ServerEndpoint contains the address information for to connect to a Nomad
// server.
//
// TODO(sean@): Server is stubbed out so that in the future it can hold a
// reference to Node (and ultimately Node.ID).
type ServerEndpoint struct {
// Name is the unique lookup key for a Server instance
Name string
Host string
Port string
Addr net.Addr
}
// Key returns the corresponding Key
func (s *ServerEndpoint) Key() *EndpointKey {
return &EndpointKey{
name: s.Name,
}
}
// newServer creates a new Server instance with a resolvable endpoint
func newServer(name string) (s *ServerEndpoint, err error) {
s = &ServerEndpoint{
Name: name,
}
var (
host, port string
)
host, port, err = net.SplitHostPort(name)
if err == nil {
s.Host = host
s.Port = port
} else {
if strings.Contains(err.Error(), "missing port") {
s.Host = name
s.Port = defaultNomadRPCPort
} else {
return nil, err
}
}
if s.Addr, err = net.ResolveTCPAddr("tcp", net.JoinHostPort(s.Host, s.Port)); err != nil {
return nil, err
}
return s, err
}
// String returns a string representation of Server
func (s *ServerEndpoint) String() string {
var addrStr, networkStr string
if s.Addr != nil {
addrStr = s.Addr.String()
networkStr = s.Addr.Network()
}
return fmt.Sprintf("%s (%s:%s)", s.Name, networkStr, addrStr)
}