Allow loading server StreamDetails JSON directly

go.mod

@@ -4,14 +4,14 @@ go 1.21
 
 require (
 	github.com/dustin/go-humanize v1.0.1
-	github.com/expr-lang/expr v1.16.7
+	github.com/expr-lang/expr v1.16.9
 	github.com/google/go-cmp v0.6.0
-	github.com/klauspost/compress v1.17.8
+	github.com/klauspost/compress v1.17.9
 	github.com/nats-io/nats-server/v2 v2.11.0-preview.2
-	github.com/nats-io/nats.go v1.35.0
+	github.com/nats-io/nats.go v1.36.0
 	github.com/nats-io/nuid v1.0.1
-	golang.org/x/net v0.25.0
-	golang.org/x/text v0.15.0
+	golang.org/x/net v0.26.0
+	golang.org/x/text v0.16.0
 	gopkg.in/yaml.v3 v3.0.1
 )
 
@@ -22,8 +22,8 @@ require (
 	github.com/nats-io/jwt/v2 v2.5.7 // indirect
 	github.com/nats-io/nkeys v0.4.7 // indirect
 	github.com/rogpeppe/go-internal v1.12.0 // indirect
-	golang.org/x/crypto v0.23.0 // indirect
-	golang.org/x/sys v0.20.0 // indirect
+	golang.org/x/crypto v0.24.0 // indirect
+	golang.org/x/sys v0.21.0 // indirect
 	golang.org/x/time v0.5.0 // indirect
 	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
 )

go.sum

@@ -1,14 +1,14 @@
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
 github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
-github.com/expr-lang/expr v1.16.7 h1:gCIiHt5ODA0xIaDbD0DPKyZpM9Drph3b3lolYAYq2Kw=
-github.com/expr-lang/expr v1.16.7/go.mod h1:8/vRC7+7HBzESEqt5kKpYXxrxkr31SaO8r40VO/1IT4=
+github.com/expr-lang/expr v1.16.9 h1:WUAzmR0JNI9JCiF0/ewwHB1gmcGw5wW7nWt8gc6PpCI=
+github.com/expr-lang/expr v1.16.9/go.mod h1:8/vRC7+7HBzESEqt5kKpYXxrxkr31SaO8r40VO/1IT4=
 github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
 github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/google/go-tpm v0.9.0 h1:sQF6YqWMi+SCXpsmS3fd21oPy/vSddwZry4JnmltHVk=
 github.com/google/go-tpm v0.9.0/go.mod h1:FkNVkc6C+IsvDI9Jw1OveJmxGZUUaKxtrpOS47QWKfU=
-github.com/klauspost/compress v1.17.8 h1:YcnTYrq7MikUT7k0Yb5eceMmALQPYBW/Xltxn0NAMnU=
-github.com/klauspost/compress v1.17.8/go.mod h1:Di0epgTjJY877eYKx5yC51cX2A2Vl2ibi7bDH9ttBbw=
+github.com/klauspost/compress v1.17.9 h1:6KIumPrER1LHsvBVuDa0r5xaG0Es51mhhB9BQB2qeMA=
+github.com/klauspost/compress v1.17.9/go.mod h1:Di0epgTjJY877eYKx5yC51cX2A2Vl2ibi7bDH9ttBbw=
 github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
 github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
 github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
@@ -22,8 +22,8 @@ github.com/nats-io/jwt/v2 v2.5.7 h1:j5lH1fUXCnJnY8SsQeB/a/z9Azgu2bYIDvtPVNdxe2c=
 github.com/nats-io/jwt/v2 v2.5.7/go.mod h1:ZdWS1nZa6WMZfFwwgpEaqBV8EPGVgOTDHN/wTbz0Y5A=
 github.com/nats-io/nats-server/v2 v2.11.0-preview.2 h1:tT/UeBbFzHRzwy77T/+/Rbw58XP9F3CY3VmtcDltZ68=
 github.com/nats-io/nats-server/v2 v2.11.0-preview.2/go.mod h1:ILDVzrTqMco4rQMOgEZimBjJHb1oZDlz1J+qhJtZlRM=
-github.com/nats-io/nats.go v1.35.0 h1:XFNqNM7v5B+MQMKqVGAyHwYhyKb48jrenXNxIU20ULk=
-github.com/nats-io/nats.go v1.35.0/go.mod h1:Ubdu4Nh9exXdSz0RVWRFBbRfrbSxOYd26oF0wkWclB8=
+github.com/nats-io/nats.go v1.36.0 h1:suEUPuWzTSse/XhESwqLxXGuj8vGRuPRoG7MoRN/qyU=
+github.com/nats-io/nats.go v1.36.0/go.mod h1:Ubdu4Nh9exXdSz0RVWRFBbRfrbSxOYd26oF0wkWclB8=
 github.com/nats-io/nkeys v0.4.7 h1:RwNJbbIdYCoClSDNY7QVKZlyb/wfT6ugvFCiKy6vDvI=
 github.com/nats-io/nkeys v0.4.7/go.mod h1:kqXRgRDPlGy7nGaEDMuYzmiJCIAAWDK0IMBtDmGD0nc=
 github.com/nats-io/nuid v1.0.1 h1:5iA8DT8V7q8WK2EScv2padNa/rTESc1KdnPw4TC2paw=
@@ -32,15 +32,15 @@ github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsK
 github.com/rogpeppe/go-internal v1.9.0/go.mod h1:WtVeX8xhTBvf0smdhujwtBcq4Qrzq/fJaraNFVN+nFs=
 github.com/rogpeppe/go-internal v1.12.0 h1:exVL4IDcn6na9z1rAb56Vxr+CgyK3nn3O+epU5NdKM8=
 github.com/rogpeppe/go-internal v1.12.0/go.mod h1:E+RYuTGaKKdloAfM02xzb0FW3Paa99yedzYV+kq4uf4=
-golang.org/x/crypto v0.23.0 h1:dIJU/v2J8Mdglj/8rJ6UUOM3Zc9zLZxVZwwxMooUSAI=
-golang.org/x/crypto v0.23.0/go.mod h1:CKFgDieR+mRhux2Lsu27y0fO304Db0wZe70UKqHu0v8=
-golang.org/x/net v0.25.0 h1:d/OCCoBEUq33pjydKrGQhw7IlUPI2Oylr+8qLx49kac=
-golang.org/x/net v0.25.0/go.mod h1:JkAGAh7GEvH74S6FOH42FLoXpXbE/aqXSrIQjXgsiwM=
+golang.org/x/crypto v0.24.0 h1:mnl8DM0o513X8fdIkmyFE/5hTYxbwYOjDS/+rK6qpRI=
+golang.org/x/crypto v0.24.0/go.mod h1:Z1PMYSOR5nyMcyAVAIQSKCDwalqy85Aqn1x3Ws4L5DM=
+golang.org/x/net v0.26.0 h1:soB7SVo0PWrY4vPW/+ay0jKDNScG2X9wFeYlXIvJsOQ=
+golang.org/x/net v0.26.0/go.mod h1:5YKkiSynbBIh3p6iOc/vibscux0x38BZDkn8sCUPxHE=
 golang.org/x/sys v0.0.0-20190130150945-aca44879d564/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.20.0 h1:Od9JTbYCk261bKm4M/mw7AklTlFYIa0bIp9BgSm1S8Y=
-golang.org/x/sys v0.20.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
-golang.org/x/text v0.15.0 h1:h1V/4gjBv8v9cjcR6+AR5+/cIYK5N/WAgiv4xlsEtAk=
-golang.org/x/text v0.15.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
+golang.org/x/sys v0.21.0 h1:rF+pYz3DAGSQAxAu1CbC7catZg4ebC4UIeIhKxBZvws=
+golang.org/x/sys v0.21.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/text v0.16.0 h1:a94ExnEXNtEwYLGJSIUxnWoxoRz/ZcCsV63ROupILh4=
+golang.org/x/text v0.16.0/go.mod h1:GhwF1Be+LQoKShO3cGOHzqOgRrGaYc9AvblQOmPVHnI=
 golang.org/x/time v0.5.0 h1:o7cqy6amK/52YcAKIPlM3a+Fpj35zvRj2TP+e1xFSfk=
 golang.org/x/time v0.5.0/go.mod h1:3BpzKBy/shNhVucY/MWOyx10tF3SFh9QdLuxbVysPQM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=

manager_test.go

@@ -159,17 +159,12 @@ func streamPublish(t *testing.T, nc *nats.Conn, subj string, msg []byte) {
 func startJSServer(t *testing.T) (*natsd.Server, *nats.Conn, *jsm.Manager) {
 	t.Helper()
 
-	d, err := os.MkdirTemp("", "jstest")
-	if err != nil {
-		t.Fatalf("temp dir could not be made: %s", err)
-	}
-
 	opts := &natsd.Options{
 		JetStream: true,
-		StoreDir:  d,
-		Port:      -1,
+		StoreDir:  t.TempDir(),
 		Host:      "localhost",
 		LogFile:   "/dev/stdout",
+		HTTPPort:  -1,
 		Trace:     true,
 	}
 

streams.go

@@ -104,6 +104,49 @@ func (m *Manager) NewStreamFromDefault(name string, dflt api.StreamConfig, opts
 	return m.streamFromConfig(&resp.Config, resp.StreamInfo), nil
 }
 
+// LoadFromStreamDetailBytes creates a stream info from the server StreamDetails in json format, the StreamDetails should
+// be created with Config and Consumers options set
+func (m *Manager) LoadFromStreamDetailBytes(sd []byte) (stream *Stream, consumers []*Consumer, err error) {
+	stream = &Stream{
+		mgr: m,
+	}
+
+	var nfo api.StreamInfo
+	err = json.Unmarshal(sd, &nfo)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	stream.lastInfo = &nfo
+	stream.cfg = &nfo.Config
+
+	if stream.Name() == "" {
+		return nil, nil, fmt.Errorf("invalid stream details, ensure configuration is included")
+	}
+
+	var cons struct {
+		Consumers []*api.ConsumerInfo `json:"consumer_detail"`
+	}
+	err = json.Unmarshal(sd, &cons)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	for _, consumer := range cons.Consumers {
+		c := Consumer{
+			name:     consumer.Name,
+			stream:   stream.Name(),
+			cfg:      &consumer.Config,
+			lastInfo: consumer,
+			mgr:      m,
+		}
+
+		consumers = append(consumers, &c)
+	}
+
+	return stream, consumers, nil
+}
+
 func (m *Manager) streamFromConfig(cfg *api.StreamConfig, info *api.StreamInfo) (stream *Stream) {
 	s := &Stream{cfg: cfg, mgr: m}
 	if info != nil {

streams_test.go

@@ -15,6 +15,7 @@ package jsm_test
 
 import (
 	"context"
+	"encoding/json"
 	"errors"
 	"fmt"
 	"reflect"
@@ -24,6 +25,7 @@ import (
 	"time"
 
 	"github.com/google/go-cmp/cmp"
+	"github.com/nats-io/nats-server/v2/server"
 	"github.com/nats-io/nats.go"
 
 	"github.com/nats-io/jsm.go"
@@ -168,6 +170,73 @@ func TestLoadStream(t *testing.T) {
 	}
 }
 
+func TestLoadFromStreamDetailBytes(t *testing.T) {
+	srv, nc, mgr := startJSServer(t)
+	defer srv.Shutdown()
+	defer nc.Flush()
+
+	q1, err := mgr.NewStream("q1", jsm.Subjects("in.q1"), jsm.FileStorage())
+	checkErr(t, err, "create failed")
+	c1, err := q1.NewConsumer(jsm.DurableName("C1"))
+	checkErr(t, err, "create failed")
+
+	_, err = q1.NewConsumer(jsm.DurableName("C2"))
+	checkErr(t, err, "create failed")
+
+	_, err = nc.Request("in.q1", nil, time.Second)
+	checkErr(t, err, "publish failed")
+	msg, err := c1.NextMsg()
+	checkErr(t, err, "next failed")
+	err = msg.Ack()
+	checkErr(t, err, "ack failed")
+
+	jsz, err := srv.Jsz(&server.JSzOptions{Streams: true, Config: true, Consumer: true})
+	checkErr(t, err, "jsz failed")
+	if len(jsz.AccountDetails) == 0 {
+		t.Fatalf("jsz should have at least one account")
+	}
+	if len(jsz.AccountDetails[0].Streams) == 0 {
+		t.Fatalf("jsz should have at least one stream")
+	}
+
+	sdb, err := json.Marshal(jsz.AccountDetails[0].Streams[0])
+	checkErr(t, err, "json marshal failed")
+
+	stream, consumers, err := mgr.LoadFromStreamDetailBytes(sdb)
+	checkErr(t, err, "load failed")
+
+	if stream.Name() != "q1" || !cmp.Equal(stream.Subjects(), []string{"in.q1"}) {
+		t.Fatalf("invalid stream")
+	}
+
+	state, err := stream.LatestState()
+	checkErr(t, err, "latest state failed")
+
+	if state.Msgs != 1 {
+		t.Fatalf("invalid state")
+	}
+	if state.Consumers != 2 {
+		t.Fatalf("invalid consumers")
+	}
+
+	if len(consumers) != 2 {
+		t.Fatalf("invalid consumers")
+	}
+
+	if consumers[0].Name() != "C1" || consumers[0].StreamName() != "q1" {
+		t.Fatalf("invalid c1 consumer")
+	}
+	af, err := consumers[0].AcknowledgedFloor()
+	checkErr(t, err, "ackfloor failed")
+	if af.Stream != 1 {
+		t.Fatalf("invalid ack floor")
+	}
+
+	if consumers[1].Name() != "C2" || consumers[1].StreamName() != "q1" {
+		t.Fatalf("invalid c2 consumer")
+	}
+}
+
 func TestStream_Reset(t *testing.T) {
 	srv, nc, mgr := startJSServer(t)
 	defer srv.Shutdown()