etcdmain: use NewUniqueURLsWithExceptions

Signed-off-by: Gyuho Lee <gyuhox@gmail.com>

etcdmain/config.go

@@ -128,12 +128,22 @@ func newConfig() *config {
 	fs.StringVar(&cfg.configFile, "config-file", "", "Path to the server configuration file")
 
 	// member
-	fs.Var(cfg.ec.CorsInfo, "cors", "Comma-separated white list of origins for CORS (cross-origin resource sharing).")
 	fs.StringVar(&cfg.ec.Dir, "data-dir", cfg.ec.Dir, "Path to the data directory.")
 	fs.StringVar(&cfg.ec.WalDir, "wal-dir", cfg.ec.WalDir, "Path to the dedicated wal directory.")
-	fs.Var(flags.NewURLsValue(embed.DefaultListenPeerURLs), "listen-peer-urls", "List of URLs to listen on for peer traffic.")
-	fs.Var(flags.NewURLsValue(embed.DefaultListenClientURLs), "listen-client-urls", "List of URLs to listen on for client traffic.")
-	fs.Var(flags.NewURLsValue(""), "listen-metrics-urls", "List of URLs to listen on for metrics.")
+	fs.Var(
+		flags.NewUniqueURLsWithExceptions(embed.DefaultListenPeerURLs, ""),
+		"listen-peer-urls",
+		"List of URLs to listen on for peer traffic.",
+	)
+	fs.Var(
+		flags.NewUniqueURLsWithExceptions(embed.DefaultListenClientURLs, ""), "listen-client-urls",
+		"List of URLs to listen on for client traffic.",
+	)
+	fs.Var(
+		flags.NewUniqueURLsWithExceptions("", ""),
+		"listen-metrics-urls",
+		"List of URLs to listen on for metrics.",
+	)
 	fs.UintVar(&cfg.ec.MaxSnapFiles, "max-snapshots", cfg.ec.MaxSnapFiles, "Maximum number of snapshot files to retain (0 is unlimited).")
 	fs.UintVar(&cfg.ec.MaxWalFiles, "max-wals", cfg.ec.MaxWalFiles, "Maximum number of wal files to retain (0 is unlimited).")
 	fs.StringVar(&cfg.ec.Name, "name", cfg.ec.Name, "Human-readable name for this member.")
@@ -148,8 +158,16 @@ func newConfig() *config {
 	fs.DurationVar(&cfg.ec.GRPCKeepAliveTimeout, "grpc-keepalive-timeout", cfg.ec.GRPCKeepAliveTimeout, "Additional duration of wait before closing a non-responsive connection (0 to disable).")
 
 	// clustering
-	fs.Var(flags.NewURLsValue(embed.DefaultInitialAdvertisePeerURLs), "initial-advertise-peer-urls", "List of this member's peer URLs to advertise to the rest of the cluster.")
-	fs.Var(flags.NewURLsValue(embed.DefaultAdvertiseClientURLs), "advertise-client-urls", "List of this member's client URLs to advertise to the public.")
+	fs.Var(
+		flags.NewUniqueURLsWithExceptions(embed.DefaultInitialAdvertisePeerURLs, ""),
+		"initial-advertise-peer-urls",
+		"List of this member's peer URLs to advertise to the rest of the cluster.",
+	)
+	fs.Var(
+		flags.NewUniqueURLsWithExceptions(embed.DefaultAdvertiseClientURLs, ""),
+		"advertise-client-urls",
+		"List of this member's client URLs to advertise to the public.",
+	)
 	fs.StringVar(&cfg.ec.Durl, "discovery", cfg.ec.Durl, "Discovery URL used to bootstrap the cluster.")
 	fs.Var(cfg.cf.fallback, "discovery-fallback", fmt.Sprintf("Valid values include %q", cfg.cf.fallback.Valids()))
 
@@ -186,7 +204,13 @@ func newConfig() *config {
 	fs.BoolVar(&cfg.ec.PeerAutoTLS, "peer-auto-tls", false, "Peer TLS using generated certificates")
 	fs.StringVar(&cfg.ec.PeerTLSInfo.CRLFile, "peer-crl-file", "", "Path to the peer certificate revocation list file.")
 	fs.StringVar(&cfg.ec.PeerTLSInfo.AllowedCN, "peer-cert-allowed-cn", "", "Allowed CN for inter peer authentication.")
-	fs.Var(flags.NewStringsValue(""), "host-whitelist", "Comma-separated acceptable hostnames from HTTP client requests, if server is not secure (empty means allow all).")
+
+	fs.Var(
+		flags.NewUniqueURLsWithExceptions("*", "*"),
+		"cors",
+		"Comma-separated white list of origins for CORS, or cross-origin resource sharing, (empty or * means allow all)",
+	)
+	fs.Var(flags.NewUniqueStringsValue("*"), "host-whitelist", "Comma-separated acceptable hostnames from HTTP client requests, if server is not secure (empty means allow all).")
 
 	// logging
 	fs.BoolVar(&cfg.ec.Debug, "debug", false, "Enable debug-level logging for etcd.")
@@ -261,12 +285,15 @@ func (cfg *config) configFromCmdLine() error {
 		plog.Fatalf("%v", err)
 	}
 
-	cfg.ec.LPUrls = flags.URLsFromFlag(cfg.cf.flagSet, "listen-peer-urls")
-	cfg.ec.APUrls = flags.URLsFromFlag(cfg.cf.flagSet, "initial-advertise-peer-urls")
-	cfg.ec.LCUrls = flags.URLsFromFlag(cfg.cf.flagSet, "listen-client-urls")
-	cfg.ec.ACUrls = flags.URLsFromFlag(cfg.cf.flagSet, "advertise-client-urls")
-	cfg.ec.HostWhitelist = flags.StringsFromFlag(cfg.cf.flagSet, "host-whitelist")
-	cfg.ec.ListenMetricsUrls = flags.URLsFromFlag(cfg.cf.flagSet, "listen-metrics-urls")
+	cfg.ec.LPUrls = flags.UniqueURLsFromFlag(cfg.cf.flagSet, "listen-peer-urls")
+	cfg.ec.APUrls = flags.UniqueURLsFromFlag(cfg.cf.flagSet, "initial-advertise-peer-urls")
+	cfg.ec.LCUrls = flags.UniqueURLsFromFlag(cfg.cf.flagSet, "listen-client-urls")
+	cfg.ec.ACUrls = flags.UniqueURLsFromFlag(cfg.cf.flagSet, "advertise-client-urls")
+	cfg.ec.ListenMetricsUrls = flags.UniqueURLsFromFlag(cfg.cf.flagSet, "listen-metrics-urls")
+
+	cv := flags.UniqueURLsMapFromFlag(cfg.cf.flagSet, "cors")
+	cfg.ec.CorsInfo = &cv
+	cfg.ec.HostWhitelist = flags.UniqueStringsFromFlag(cfg.cf.flagSet, "host-whitelist")
 
 	cfg.ec.ClusterState = cfg.cf.clusterState.String()
 	cfg.cp.Fallback = cfg.cf.fallback.String()

etcdmain/help.go

@@ -41,7 +41,6 @@ var (
 	`
 	flagsline = `
 member flags:
-
 	--name 'default'
 		human-readable name for this member.
 	--data-dir '${name}.etcd'
@@ -62,8 +61,6 @@ member flags:
 		maximum number of snapshot files to retain (0 is unlimited).
 	--max-wals '` + strconv.Itoa(embed.DefaultMaxWALs) + `'
 		maximum number of wal files to retain (0 is unlimited).
-	--cors ''
-		comma-separated whitelist of origins for CORS (cross-origin resource sharing).
 	--quota-backend-bytes '0'
 		raise alarms when backend size exceeds the given quota (0 defaults to low space quota).
 	--max-txn-ops '128'
@@ -78,7 +75,6 @@ member flags:
 		additional duration of wait before closing a non-responsive connection (0 to disable).
 
 clustering flags:
-
 	--initial-advertise-peer-urls 'http://localhost:2380'
 		list of this member's peer URLs to advertise to the rest of the cluster.
 	--initial-cluster 'default=http://localhost:2380'
@@ -114,7 +110,6 @@ clustering flags:
 		Accept etcd V2 client requests.
 
 proxy flags (v2 API only):
-
 	--proxy 'off'
 		proxy mode setting ('off', 'readonly' or 'on').
 	--proxy-failure-wait 5000
@@ -129,7 +124,6 @@ proxy flags (v2 API only):
 		time (in milliseconds) for a read to timeout.
 
 security flags:
-
 	--cert-file ''
 		path to the client server TLS cert file.
 	--key-file ''
@@ -154,11 +148,12 @@ security flags:
 		peer TLS using self-generated certificates if --peer-key-file and --peer-cert-file are not provided.
 	--peer-crl-file ''
 		path to the peer certificate revocation list file.
+	--cors '*'
+		comma-separated whitelist of origins for CORS, or cross-origin resource sharing, (empty or * means allow all).
 	--host-whitelist ''
-		acceptable hostnames from HTTP client requests, if server is not secure (empty means allow all).
+		acceptable hostnames from HTTP client requests, if server is not secure (empty or * means allow all).
 
 logging flags
-
 	--debug 'false'
 		enable debug-level logging for etcd.
 	--log-package-levels ''