"net/http"
"os"
"os/signal"
- "reflect"
"regexp"
"sync"
"syscall"
)
// Default TCP address on which to listen for requests.
-// Initialized by the -listen flag.
-const DEFAULT_ADDR = ":25107"
+// Override with -listen.
+const DefaultAddr = ":25107"
var listener net.Listener
pidfile string
)
- flagset := flag.NewFlagSet("default", flag.ExitOnError)
+ flagset := flag.NewFlagSet("keepproxy", flag.ExitOnError)
flagset.StringVar(
&listen,
"listen",
- DEFAULT_ADDR,
+ DefaultAddr,
"Interface on which to listen for requests, in the format "+
"ipaddr:port. e.g. -listen=10.0.1.24:8000. Use -listen=:port "+
"to listen on all network interfaces.")
log.Fatalf("Error setting up arvados client %s", err.Error())
}
+ if os.Getenv("ARVADOS_DEBUG") != "" {
+ keepclient.DebugPrintf = log.Printf
+ }
kc, err := keepclient.MakeKeepClient(&arv)
if err != nil {
log.Fatalf("Error setting up keep client %s", err.Error())
}
kc.Want_replicas = default_replicas
-
kc.Client.Timeout = time.Duration(timeout) * time.Second
+ go kc.RefreshServices(5*time.Minute, 3*time.Second)
listener, err = net.Listen("tcp", listen)
if err != nil {
log.Fatalf("Could not listen on %v", listen)
}
-
- go RefreshServicesList(kc)
+ log.Printf("Arvados Keep proxy started listening on %v", listener.Addr())
// Shut down the server gracefully (by closing the listener)
// if SIGTERM is received.
signal.Notify(term, syscall.SIGTERM)
signal.Notify(term, syscall.SIGINT)
- log.Printf("Arvados Keep proxy started listening on %v", listener.Addr())
-
- // Start listening for requests.
+ // Start serving requests.
http.Serve(listener, MakeRESTRouter(!no_get, !no_put, kc))
log.Println("shutting down")
expireTime int64
}
-// Refresh the keep service list every five minutes.
-func RefreshServicesList(kc *keepclient.KeepClient) {
- var previousRoots = []map[string]string{}
- var delay time.Duration = 0
- for {
- time.Sleep(delay * time.Second)
- delay = 300
- if err := kc.DiscoverKeepServers(); err != nil {
- log.Println("Error retrieving services list:", err)
- delay = 3
- continue
- }
- newRoots := []map[string]string{kc.LocalRoots(), kc.GatewayRoots()}
- if !reflect.DeepEqual(previousRoots, newRoots) {
- log.Printf("Updated services list: locals %v gateways %v", newRoots[0], newRoots[1])
- }
- if len(newRoots[0]) == 0 {
- log.Print("WARNING: No local services. Retrying in 3 seconds.")
- delay = 3
- }
- previousRoots = newRoots
- }
-}
-
// Cache the token and set an expire time. If we already have an expire time
// on the token, it is not updated.
func (this *ApiTokenCache) RememberToken(token string) {
}
func GetRemoteAddress(req *http.Request) string {
- if realip := req.Header.Get("X-Real-IP"); realip != "" {
- if forwarded := req.Header.Get("X-Forwarded-For"); forwarded != realip {
- return fmt.Sprintf("%s (X-Forwarded-For %s)", realip, forwarded)
- } else {
- return realip
- }
+ if xff := req.Header.Get("X-Forwarded-For"); xff != "" {
+ return xff + "," + req.RemoteAddr
}
return req.RemoteAddr
}
-func CheckAuthorizationHeader(kc keepclient.KeepClient, cache *ApiTokenCache, req *http.Request) (pass bool, tok string) {
+func CheckAuthorizationHeader(kc *keepclient.KeepClient, cache *ApiTokenCache, req *http.Request) (pass bool, tok string) {
var auth string
if auth = req.Header.Get("Authorization"); auth == "" {
return false, ""
var pass bool
var tok string
- if pass, tok = CheckAuthorizationHeader(kc, this.ApiTokenCache, req); !pass {
+ if pass, tok = CheckAuthorizationHeader(&kc, this.ApiTokenCache, req); !pass {
status, err = http.StatusForbidden, BadAuthorizationHeader
return
}
var pass bool
var tok string
- if pass, tok = CheckAuthorizationHeader(kc, this.ApiTokenCache, req); !pass {
+ if pass, tok = CheckAuthorizationHeader(&kc, this.ApiTokenCache, req); !pass {
err = BadAuthorizationHeader
status = http.StatusForbidden
return
kc := *handler.KeepClient
- ok, token := CheckAuthorizationHeader(kc, handler.ApiTokenCache, req)
+ ok, token := CheckAuthorizationHeader(&kc, handler.ApiTokenCache, req)
if !ok {
status, err = http.StatusForbidden, BadAuthorizationHeader
return