Report observer status in cluster replicas for streams and consumers

This is to support nats-io/nats-server#4582.

Signed-off-by: Neil Twigg <neil@nats.io>

cli/consumer_command.go

@@ -637,16 +637,7 @@ func (c *consumerCmd) showInfo(config api.ConsumerConfig, state api.ConsumerInfo
 		cols.AddRow("Name", state.Cluster.Name)
 		cols.AddRow("Leader", state.Cluster.Leader)
 		for _, r := range state.Cluster.Replicas {
-			since := fmt.Sprintf("seen %s ago", f(r.Active))
-			if r.Active == 0 || r.Active == math.MaxInt64 {
-				since = "not seen"
-			}
-
-			if r.Current {
-				cols.AddRowf("Replica", "%s, current, %s", r.Name, since)
-			} else {
-				cols.AddRowf("Replica", "%s, outdated, %s", r.Name, since)
-			}
+			cols.AddRow("Replica", replicaInfoFor(r))
 		}
 	}
 

cli/kv_command.go

@@ -838,6 +838,10 @@ func renderNatsGoClusterInfo(cols *columns.Writer, info *nats.StreamInfo) {
 			state = append(state, "outdated")
 		}
 
+		if r.Observer {
+			state = append(state, "observer")
+		}
+
 		if r.Offline {
 			state = append(state, "OFFLINE")
 		}

cli/stream_command.go

@@ -1933,33 +1933,7 @@ func (c *streamCmd) showStreamInfo(info *api.StreamInfo) {
 		cols.AddRow("Name", info.Cluster.Name)
 		cols.AddRow("Leader", info.Cluster.Leader)
 		for _, r := range info.Cluster.Replicas {
-			state := []string{r.Name}
-
-			if r.Current {
-				state = append(state, "current")
-			} else {
-				state = append(state, "outdated")
-			}
-
-			if r.Offline {
-				state = append(state, "OFFLINE")
-			}
-
-			if r.Active > 0 && r.Active < math.MaxInt64 {
-				state = append(state, fmt.Sprintf("seen %s ago", f(r.Active)))
-			} else {
-				state = append(state, "not seen")
-			}
-
-			switch {
-			case r.Lag > 1:
-				state = append(state, fmt.Sprintf("%s operations behind", f(r.Lag)))
-			case r.Lag == 1:
-				state = append(state, fmt.Sprintf("%s operation behind", f(r.Lag)))
-			}
-
-			cols.AddRow("Replica", state)
-
+			cols.AddRow("Replica", replicaInfoFor(r))
 		}
 		cols.Println()
 	}

cli/util.go

@@ -789,8 +789,9 @@ func renderCluster(cluster *api.ClusterInfo) string {
 	// first we figure out leader and downs based on the full names and build
 	// peers array which is a list of all the full names
 	leader := -1
-	warn := []int{}
-	var peers []string
+	peers := make([]string, 0, len(cluster.Replicas))
+	warn := make([]int, 0, len(cluster.Replicas))
+	obs := make([]int, 0, len(cluster.Replicas))
 
 	if cluster.Leader != "" {
 		peers = append(peers, cluster.Leader)
@@ -805,7 +806,9 @@ func renderCluster(cluster *api.ClusterInfo) string {
 			} else {
 				warn = append(warn, i)
 			}
-
+		}
+		if r.Observer {
+			obs = append(obs, i)
 		}
 		peers = append(peers, name)
 	}
@@ -815,6 +818,9 @@ func renderCluster(cluster *api.ClusterInfo) string {
 	if leader != -1 {
 		compact[0] = compact[0] + "*"
 	}
+	for _, i := range obs {
+		compact[i] = compact[i] + "^"
+	}
 	for _, i := range warn {
 		compact[i] = compact[i] + "!"
 	}
@@ -1360,3 +1366,36 @@ func structWithoutOmitEmpty(s any) any {
 
 	return res
 }
+
+func replicaInfoFor(r *api.PeerInfo) []string {
+	state := []string{r.Name}
+
+	if r.Current {
+		state = append(state, "current")
+	} else {
+		state = append(state, "outdated")
+	}
+
+	if r.Observer {
+		state = append(state, "observer")
+	}
+
+	if r.Offline {
+		state = append(state, "OFFLINE")
+	}
+
+	if r.Active > 0 && r.Active < math.MaxInt64 {
+		state = append(state, fmt.Sprintf("seen %s ago", f(r.Active)))
+	} else {
+		state = append(state, "not seen")
+	}
+
+	switch {
+	case r.Lag > 1:
+		state = append(state, fmt.Sprintf("%s operations behind", f(r.Lag)))
+	case r.Lag == 1:
+		state = append(state, fmt.Sprintf("%s operation behind", f(r.Lag)))
+	}
+
+	return state
+}

go.mod

@@ -2,9 +2,14 @@ module github.com/nats-io/natscli
 
 go 1.20
 
+replace github.com/nats-io/jsm.go => github.com/nats-io/jsm.go v0.1.1-0.20230926090317-6fb84b8ef01d
+
+replace github.com/nats-io/nats.go => github.com/nats-io/nats.go v1.30.2-0.20230926090553-22cd46b4d288
+
 require (
 	github.com/AlecAivazis/survey/v2 v2.3.7
 	github.com/HdrHistogram/hdrhistogram-go v1.1.2
+	github.com/antonmedv/expr v1.15.3
 	github.com/choria-io/fisk v0.6.0
 	github.com/dustin/go-humanize v1.0.1
 	github.com/emicklei/dot v1.6.0
@@ -19,8 +24,10 @@ require (
 	github.com/klauspost/compress v1.17.0
 	github.com/mattn/go-isatty v0.0.19
 	github.com/nats-io/jsm.go v0.1.1-0.20230922064108-bb09405bc2c0
+	github.com/nats-io/jwt/v2 v2.5.2
 	github.com/nats-io/nats-server/v2 v2.10.1
 	github.com/nats-io/nats.go v1.30.0
+	github.com/nats-io/nkeys v0.4.5
 	github.com/nats-io/nuid v1.0.1
 	github.com/prometheus/client_golang v1.16.0
 	github.com/prometheus/common v0.44.0
@@ -32,7 +39,6 @@ require (
 )
 
 require (
-	github.com/antonmedv/expr v1.15.3 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cespare/xxhash/v2 v2.2.0 // indirect
 	github.com/golang/protobuf v1.5.3 // indirect
@@ -42,12 +48,9 @@ require (
 	github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
 	github.com/mgutz/ansi v0.0.0-20200706080929-d51e80ef957d // indirect
 	github.com/minio/highwayhash v1.0.2 // indirect
-	github.com/nats-io/jwt/v2 v2.5.2 // indirect
-	github.com/nats-io/nkeys v0.4.5 // indirect
 	github.com/prometheus/client_model v0.4.0 // indirect
 	github.com/prometheus/procfs v0.11.1 // indirect
 	github.com/rivo/uniseg v0.4.4 // indirect
-	github.com/sevlyar/retag v0.0.0-20190429052747-c3f10e304082 // indirect
 	golang.org/x/net v0.15.0 // indirect
 	golang.org/x/sys v0.12.0 // indirect
 	golang.org/x/text v0.13.0 // indirect

go.sum

@@ -80,16 +80,14 @@ github.com/mgutz/ansi v0.0.0-20200706080929-d51e80ef957d h1:5PJl274Y63IEHC+7izoQ
 github.com/mgutz/ansi v0.0.0-20200706080929-d51e80ef957d/go.mod h1:01TrycV0kFyexm33Z7vhZRXopbI8J3TDReVlkTgMUxE=
 github.com/minio/highwayhash v1.0.2 h1:Aak5U0nElisjDCfPSG79Tgzkn2gl66NxOMspRrKnA/g=
 github.com/minio/highwayhash v1.0.2/go.mod h1:BQskDq+xkJ12lmlUUi7U0M5Swg3EWR+dLTk+kldvVxY=
-github.com/nats-io/jsm.go v0.1.1-0.20230921074448-1bbb5650afc8 h1:OKm9e1//rlcl4i9zXQ6QQxj7DJaeL+Oe8WBgAKO4cqI=
-github.com/nats-io/jsm.go v0.1.1-0.20230921074448-1bbb5650afc8/go.mod h1:hB4Qd+IKoRvAAWTOI1HkCy4wotjFwOIT+codHCFOZqk=
-github.com/nats-io/jsm.go v0.1.1-0.20230922064108-bb09405bc2c0 h1:YrGcddIEq3vsWFO6JKGqHF1NquZCCKXJBJmp61tDRJY=
-github.com/nats-io/jsm.go v0.1.1-0.20230922064108-bb09405bc2c0/go.mod h1:hB4Qd+IKoRvAAWTOI1HkCy4wotjFwOIT+codHCFOZqk=
+github.com/nats-io/jsm.go v0.1.1-0.20230926090317-6fb84b8ef01d h1:jHy988Qmc1KRJjnyMoAHqMfZYtFFGhV8mh0EsMrh+DE=
+github.com/nats-io/jsm.go v0.1.1-0.20230926090317-6fb84b8ef01d/go.mod h1:hB4Qd+IKoRvAAWTOI1HkCy4wotjFwOIT+codHCFOZqk=
 github.com/nats-io/jwt/v2 v2.5.2 h1:DhGH+nKt+wIkDxM6qnVSKjokq5t59AZV5HRcFW0zJwU=
 github.com/nats-io/jwt/v2 v2.5.2/go.mod h1:24BeQtRwxRV8ruvC4CojXlx/WQ/VjuwlYiH+vu/+ibI=
 github.com/nats-io/nats-server/v2 v2.10.1 h1:MIJ614dhOIdo71iSzY8ln78miXwrYvlvXHUyS+XdKZQ=
 github.com/nats-io/nats-server/v2 v2.10.1/go.mod h1:3PMvMSu2cuK0J9YInRLWdFpFsswKKGUS77zVSAudRto=
-github.com/nats-io/nats.go v1.30.0 h1:bj/rVsRCrFXxmm9mJiDhb74UKl2HhKpDwKRBtvCjZjc=
-github.com/nats-io/nats.go v1.30.0/go.mod h1:dcfhUgmQNN4GJEfIb2f9R7Fow+gzBF4emzDHrVBd5qM=
+github.com/nats-io/nats.go v1.30.2-0.20230926090553-22cd46b4d288 h1:ZF1eeVI+Tkmd9Ks9QB+OXt/NLuPv+mXKxiu7nixTmVU=
+github.com/nats-io/nats.go v1.30.2-0.20230926090553-22cd46b4d288/go.mod h1:dcfhUgmQNN4GJEfIb2f9R7Fow+gzBF4emzDHrVBd5qM=
 github.com/nats-io/nkeys v0.4.5 h1:Zdz2BUlFm4fJlierwvGK+yl20IAKUm7eV6AAZXEhkPk=
 github.com/nats-io/nkeys v0.4.5/go.mod h1:XUkxdLPTufzlihbamfzQ7mw/VGx6ObUs+0bN5sNvt64=
 github.com/nats-io/nuid v1.0.1 h1:5iA8DT8V7q8WK2EScv2padNa/rTESc1KdnPw4TC2paw=
@@ -112,8 +110,6 @@ github.com/rivo/uniseg v0.4.4/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUc
 github.com/rogpeppe/go-internal v1.10.0 h1:TMyTOH3F/DB16zRVcYyreMH6GnZZrwQVAoYjRBZyWFQ=
 github.com/santhosh-tekuri/jsonschema/v5 v5.3.1 h1:lZUw3E0/J3roVtGQ+SCrUrg3ON6NgVqpn3+iol9aGu4=
 github.com/santhosh-tekuri/jsonschema/v5 v5.3.1/go.mod h1:uToXkOrWAZ6/Oc07xWQrPOhJotwFIyu2bBVN41fcDUY=
-github.com/sevlyar/retag v0.0.0-20190429052747-c3f10e304082 h1:fj05fHX+p6w6xqPfvEjFtdu95JwguF0Kg1cz/sht8+U=
-github.com/sevlyar/retag v0.0.0-20190429052747-c3f10e304082/go.mod h1:mOWh3Kdot9kBKCLbKcJTzIBBEPKRJAq2lk03eVVDmco=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
 github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=