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routes_test.go
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routes_test.go
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// Copyright 2012-2019 The NATS Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package test
import (
"encoding/json"
"fmt"
"io"
"net"
"os"
"runtime"
"strconv"
"sync"
"testing"
"time"
"memphis/internal/testhelper"
"memphis/server"
"github.com/nats-io/nats.go"
)
const clientProtoInfo = 1
func runRouteServer(t *testing.T) (*server.Server, *server.Options) {
return RunServerWithConfig("./configs/cluster.conf")
}
func runRouteServerOverrides(t *testing.T, cbo func(*server.Options), cbs func(*server.Server)) (*server.Server, *server.Options) {
return RunServerWithConfigOverrides("./configs/cluster.conf", cbo, cbs)
}
func TestRouterListeningSocket(t *testing.T) {
s, opts := runRouteServer(t)
defer s.Shutdown()
// Check that the cluster socket is able to be connected.
addr := fmt.Sprintf("%s:%d", opts.Cluster.Host, opts.Cluster.Port)
checkSocket(t, addr, 2*time.Second)
}
func TestRouteGoServerShutdown(t *testing.T) {
base := runtime.NumGoroutine()
s, _ := runRouteServer(t)
s.Shutdown()
time.Sleep(50 * time.Millisecond)
delta := (runtime.NumGoroutine() - base)
if delta > 1 {
t.Fatalf("%d Go routines still exist post Shutdown()", delta)
}
}
func TestSendRouteInfoOnConnect(t *testing.T) {
s, opts := runRouteServer(t)
defer s.Shutdown()
rc := createRouteConn(t, opts.Cluster.Host, opts.Cluster.Port)
defer rc.Close()
routeID := "RouteID"
routeSend, routeExpect := setupRouteEx(t, rc, opts, routeID)
buf := routeExpect(infoRe)
info := server.Info{}
if err := json.Unmarshal(buf[4:], &info); err != nil {
t.Fatalf("Could not unmarshal route info: %v", err)
}
if !info.AuthRequired {
t.Fatal("Expected to see AuthRequired")
}
if info.Port != opts.Cluster.Port {
t.Fatalf("Received wrong information for port, expected %d, got %d",
info.Port, opts.Cluster.Port)
}
// Need to send a different INFO than the one received, otherwise the server
// will detect as a "cycle" and close the connection.
info.ID = routeID
info.Name = ""
b, err := json.Marshal(info)
if err != nil {
t.Fatalf("Could not marshal test route info: %v", err)
}
infoJSON := fmt.Sprintf("INFO %s\r\n", b)
routeSend(infoJSON)
routeSend("PING\r\n")
routeExpect(pongRe)
}
func TestRouteToSelf(t *testing.T) {
l := testhelper.NewDummyLogger(100)
s, opts := runRouteServerOverrides(t, nil,
func(s *server.Server) {
s.SetLogger(l, true, true)
})
defer s.Shutdown()
rc := createRouteConn(t, opts.Cluster.Host, opts.Cluster.Port)
defer rc.Close()
routeSend, routeExpect := setupRouteEx(t, rc, opts, s.ID())
buf := routeExpect(infoRe)
info := server.Info{}
if err := json.Unmarshal(buf[4:], &info); err != nil {
t.Fatalf("Could not unmarshal route info: %v", err)
}
if !info.AuthRequired {
t.Fatal("Expected to see AuthRequired")
}
if info.Port != opts.Cluster.Port {
t.Fatalf("Received wrong information for port, expected %d, got %d",
info.Port, opts.Cluster.Port)
}
// Now send it back and that should be detected as a route to self and the
// connection closed.
routeSend(string(buf))
routeSend("PING\r\n")
rc.SetReadDeadline(time.Now().Add(2 * time.Second))
if _, err := rc.Read(buf); err == nil {
t.Fatal("Expected route connection to be closed")
}
// This should have been removed by removePassFromTrace(), but we also check debug logs here
l.CheckForProhibited(t, "route authorization password found", "top_secret")
}
func TestSendRouteSubAndUnsub(t *testing.T) {
s, opts := runRouteServer(t)
defer s.Shutdown()
c := createClientConn(t, opts.Host, opts.Port)
defer c.Close()
send, _ := setupConn(t, c)
// We connect to the route.
rc := createRouteConn(t, opts.Cluster.Host, opts.Cluster.Port)
defer rc.Close()
expectAuthRequired(t, rc)
routeSend, routeExpect := setupRouteEx(t, rc, opts, "ROUTER:xyz")
routeSend("INFO {\"server_id\":\"ROUTER:xyz\"}\r\n")
routeSend("PING\r\n")
routeExpect(pongRe)
// Send SUB via client connection
send("SUB foo 22\r\n")
// Make sure the RS+ is broadcast via the route
expectResult(t, rc, rsubRe)
// Send UNSUB via client connection
send("UNSUB 22\r\n")
// Make sure the RS- is broadcast via the route
expectResult(t, rc, runsubRe)
// Explicitly shutdown the server, otherwise this test would
// cause following test to fail.
s.Shutdown()
}
func TestSendRouteSolicit(t *testing.T) {
s, opts := runRouteServer(t)
defer s.Shutdown()
// Listen for a connection from the server on the first route.
if len(opts.Routes) <= 0 {
t.Fatalf("Need an outbound solicted route for this test")
}
rURL := opts.Routes[0]
conn := acceptRouteConn(t, rURL.Host, server.DEFAULT_ROUTE_CONNECT)
defer conn.Close()
// We should receive a connect message right away due to auth.
buf := expectResult(t, conn, connectRe)
// Check INFO follows. Could be inline, with first result, if not
// check follow-on buffer.
if !infoRe.Match(buf) {
expectResult(t, conn, infoRe)
}
}
func TestRouteForwardsMsgFromClients(t *testing.T) {
s, opts := runRouteServer(t)
defer s.Shutdown()
client := createClientConn(t, opts.Host, opts.Port)
defer client.Close()
clientSend, clientExpect := setupConn(t, client)
route := acceptRouteConn(t, opts.Routes[0].Host, server.DEFAULT_ROUTE_CONNECT)
defer route.Close()
routeSend, routeExpect := setupRoute(t, route, opts)
expectMsgs := expectMsgsCommand(t, routeExpect)
// Eat the CONNECT and INFO protos
buf := routeExpect(connectRe)
if !infoRe.Match(buf) {
routeExpect(infoRe)
}
// Send SUB via route connection, RS+
routeSend("RS+ $G foo\r\nPING\r\n")
routeExpect(pongRe)
// Send PUB via client connection
clientSend("PUB foo 2\r\nok\r\nPING\r\n")
clientExpect(pongRe)
matches := expectMsgs(1)
checkRmsg(t, matches[0], "$G", "foo", "", "2", "ok")
}
func TestRouteForwardsMsgToClients(t *testing.T) {
s, opts := runRouteServer(t)
defer s.Shutdown()
client := createClientConn(t, opts.Host, opts.Port)
defer client.Close()
clientSend, clientExpect := setupConn(t, client)
expectMsgs := expectMsgsCommand(t, clientExpect)
route := createRouteConn(t, opts.Cluster.Host, opts.Cluster.Port)
defer route.Close()
expectAuthRequired(t, route)
routeSend, _ := setupRoute(t, route, opts)
// Subscribe to foo
clientSend("SUB foo 1\r\nPING\r\n")
// Use ping roundtrip to make sure its processed.
clientExpect(pongRe)
// Send RMSG proto via route connection
routeSend("RMSG $G foo 2\r\nok\r\n")
matches := expectMsgs(1)
checkMsg(t, matches[0], "foo", "1", "", "2", "ok")
}
func TestRouteOneHopSemantics(t *testing.T) {
s, opts := runRouteServer(t)
defer s.Shutdown()
route := createRouteConn(t, opts.Cluster.Host, opts.Cluster.Port)
defer route.Close()
expectAuthRequired(t, route)
routeSend, _ := setupRoute(t, route, opts)
// Express interest on this route for foo.
routeSend("RS+ $G foo\r\n")
// Send MSG proto via route connection
routeSend("RMSG foo 2\r\nok\r\n")
// Make sure it does not come back!
expectNothing(t, route)
}
func TestRouteOnlySendOnce(t *testing.T) {
s, opts := runRouteServer(t)
defer s.Shutdown()
client := createClientConn(t, opts.Host, opts.Port)
defer client.Close()
clientSend, clientExpect := setupConn(t, client)
route := createRouteConn(t, opts.Cluster.Host, opts.Cluster.Port)
defer route.Close()
expectAuthRequired(t, route)
routeSend, routeExpect := setupRoute(t, route, opts)
expectMsgs := expectMsgsCommand(t, routeExpect)
// Express multiple interest on this route for foo.
routeSend("RS+ $G foo\r\n")
routeSend("RS+ $G foo\r\n")
routeSend("PING\r\n")
routeExpect(pongRe)
// Send PUB via client connection
clientSend("PUB foo 2\r\nok\r\nPING\r\n")
clientExpect(pongRe)
expectMsgs(1)
routeSend("PING\r\n")
routeExpect(pongRe)
}
func TestRouteQueueSemantics(t *testing.T) {
s, opts := runRouteServer(t)
defer s.Shutdown()
client := createClientConn(t, opts.Host, opts.Port)
clientSend, clientExpect := setupConn(t, client)
clientExpectMsgs := expectMsgsCommand(t, clientExpect)
defer client.Close()
route := createRouteConn(t, opts.Cluster.Host, opts.Cluster.Port)
defer route.Close()
expectAuthRequired(t, route)
routeSend, routeExpect := setupRouteEx(t, route, opts, "ROUTER:xyz")
routeSend("INFO {\"server_id\":\"ROUTER:xyz\"}\r\n")
expectMsgs := expectRmsgsCommand(t, routeExpect)
// Express multiple interest on this route for foo, queue group bar.
routeSend("RS+ $G foo bar 1\r\n")
routeSend("RS+ $G foo bar 2\r\n")
// Use ping roundtrip to make sure its processed.
routeSend("PING\r\n")
routeExpect(pongRe)
// Send PUB via client connection
clientSend("PUB foo 2\r\nok\r\n")
// Use ping roundtrip to make sure its processed.
clientSend("PING\r\n")
clientExpect(pongRe)
// Only 1
matches := expectMsgs(1)
checkRmsg(t, matches[0], "$G", "foo", "| bar", "2", "ok")
// Add normal Interest as well to route interest.
routeSend("RS+ $G foo\r\n")
// Use ping roundtrip to make sure its processed.
routeSend("PING\r\n")
routeExpect(pongRe)
// Send PUB via client connection
clientSend("PUB foo 2\r\nok\r\nPING\r\n")
// Use ping roundtrip to make sure its processed.
clientExpect(pongRe)
// Should be 1 now for everything. Always receive 1 message.
matches = expectMsgs(1)
checkRmsg(t, matches[0], "$G", "foo", "| bar", "2", "ok")
// Now create a queue subscription for the client as well as a normal one.
clientSend("SUB foo 1\r\n")
// Use ping roundtrip to make sure its processed.
clientSend("PING\r\n")
clientExpect(pongRe)
routeExpect(rsubRe)
clientSend("SUB foo bar 2\r\nPING\r\n")
// Use ping roundtrip to make sure its processed.
clientExpect(pongRe)
routeExpect(rsubRe)
// Deliver a MSG from the route itself, make sure the client receives both.
routeSend("RMSG $G foo | bar 2\r\nok\r\n")
// Use ping roundtrip to make sure its processed.
routeSend("PING\r\n")
routeExpect(pongRe)
// Should get 2 msgs.
matches = clientExpectMsgs(2)
// Expect first to be the normal subscriber, next will be the queue one.
checkMsg(t, matches[0], "foo", "", "", "2", "ok")
}
func TestSolicitRouteReconnect(t *testing.T) {
l := testhelper.NewDummyLogger(100)
s, opts := runRouteServerOverrides(t, nil,
func(s *server.Server) {
s.SetLogger(l, true, true)
})
defer s.Shutdown()
rURL := opts.Routes[0]
route := acceptRouteConn(t, rURL.Host, 2*server.DEFAULT_ROUTE_CONNECT)
// Go ahead and close the Route.
route.Close()
// We expect to get called back..
route = acceptRouteConn(t, rURL.Host, 2*server.DEFAULT_ROUTE_CONNECT)
route.Close()
// Now we want to check for the debug logs when it tries to reconnect
l.CheckForProhibited(t, "route authorization password found", ":bar")
}
func TestMultipleRoutesSameId(t *testing.T) {
s, opts := runRouteServer(t)
defer s.Shutdown()
route1 := createRouteConn(t, opts.Cluster.Host, opts.Cluster.Port)
defer route1.Close()
expectAuthRequired(t, route1)
route1Send, route1Expect := setupRouteEx(t, route1, opts, "ROUTE:2222")
route2 := createRouteConn(t, opts.Cluster.Host, opts.Cluster.Port)
defer route2.Close()
expectAuthRequired(t, route2)
route2Send, route2Expect := setupRouteEx(t, route2, opts, "ROUTE:2222")
// Send SUB via route connections
sub := "RS+ $G foo\r\nPING\r\n"
route1Send(sub)
route2Send(sub)
route1Expect(pongRe)
route2Expect(pongRe)
// Make sure we do not get anything on a RMSG send to a router.
// Send RMSG proto via route connection
route1Send("RMSG $G foo 2\r\nok\r\n")
expectNothing(t, route1)
expectNothing(t, route2)
// Setup a client
client := createClientConn(t, opts.Host, opts.Port)
clientSend, clientExpect := setupConn(t, client)
defer client.Close()
// Send PUB via client connection
clientSend("PUB foo 2\r\nok\r\nPING\r\n")
clientExpect(pongRe)
// We should only receive on one route, not both.
// Check both manually.
route1.SetReadDeadline(time.Now().Add(100 * time.Millisecond))
buf, _ := io.ReadAll(route1)
route1.SetReadDeadline(time.Time{})
if len(buf) <= 0 {
route2.SetReadDeadline(time.Now().Add(100 * time.Millisecond))
buf, _ = io.ReadAll(route2)
route2.SetReadDeadline(time.Time{})
if len(buf) <= 0 {
t.Fatal("Expected to get one message on a route, received none.")
}
}
matches := rmsgRe.FindAllSubmatch(buf, -1)
if len(matches) != 1 {
t.Fatalf("Expected 1 msg, got %d\n", len(matches))
}
checkRmsg(t, matches[0], "$G", "foo", "", "2", "ok")
}
func TestRouteResendsLocalSubsOnReconnect(t *testing.T) {
s, opts := runRouteServer(t)
defer s.Shutdown()
client := createClientConn(t, opts.Host, opts.Port)
defer client.Close()
clientSend, clientExpect := setupConn(t, client)
// Setup a local subscription, make sure it reaches.
clientSend("SUB foo 1\r\n")
clientSend("PING\r\n")
clientExpect(pongRe)
route := createRouteConn(t, opts.Cluster.Host, opts.Cluster.Port)
defer route.Close()
routeSend, routeExpect := setupRouteEx(t, route, opts, "ROUTE:1234")
// Expect to see the local sub echoed through after we send our INFO.
time.Sleep(50 * time.Millisecond)
buf := routeExpect(infoRe)
// Generate our own INFO so we can send one to trigger the local subs.
info := server.Info{}
if err := json.Unmarshal(buf[4:], &info); err != nil {
t.Fatalf("Could not unmarshal route info: %v", err)
}
info.ID = "ROUTE:1234"
info.Name = ""
b, err := json.Marshal(info)
if err != nil {
t.Fatalf("Could not marshal test route info: %v", err)
}
infoJSON := fmt.Sprintf("INFO %s\r\n", b)
// Trigger the send of local subs.
routeSend(infoJSON)
routeExpect(rsubRe)
// Close and then re-open
route.Close()
// Give some time for the route close to be processed before trying to recreate.
checkNumRoutes(t, s, 0)
route = createRouteConn(t, opts.Cluster.Host, opts.Cluster.Port)
defer route.Close()
routeSend, routeExpect = setupRouteEx(t, route, opts, "ROUTE:1234")
routeExpect(infoRe)
routeSend(infoJSON)
routeExpect(rsubRe)
}
type ignoreLogger struct{}
func (l *ignoreLogger) Fatalf(f string, args ...interface{}) {}
func (l *ignoreLogger) Errorf(f string, args ...interface{}) {}
func TestRouteConnectOnShutdownRace(t *testing.T) {
s, opts := runRouteServer(t)
defer s.Shutdown()
l := &ignoreLogger{}
var wg sync.WaitGroup
cQuit := make(chan bool, 1)
wg.Add(1)
go func() {
defer wg.Done()
for {
route := createRouteConn(l, opts.Cluster.Host, opts.Cluster.Port)
if route != nil {
setupRouteEx(l, route, opts, "ROUTE:1234")
route.Close()
}
select {
case <-cQuit:
return
default:
}
}
}()
time.Sleep(5 * time.Millisecond)
s.Shutdown()
cQuit <- true
wg.Wait()
}
func TestRouteSendAsyncINFOToClients(t *testing.T) {
f := func(opts *server.Options) {
s := RunServer(opts)
defer s.Shutdown()
clientURL := net.JoinHostPort(opts.Host, strconv.Itoa(opts.Port))
oldClient := createClientConn(t, opts.Host, opts.Port)
defer oldClient.Close()
oldClientSend, oldClientExpect := setupConn(t, oldClient)
oldClientSend("PING\r\n")
oldClientExpect(pongRe)
newClient := createClientConn(t, opts.Host, opts.Port)
defer newClient.Close()
newClientSend, newClientExpect := setupConnWithProto(t, newClient, clientProtoInfo)
newClientSend("PING\r\n")
newClientExpect(pongRe)
// Check that even a new client does not receive an async INFO at this point
// since there is no route created yet.
expectNothing(t, newClient)
routeID := "Server-B"
createRoute := func() (net.Conn, sendFun, expectFun) {
rc := createRouteConn(t, opts.Cluster.Host, opts.Cluster.Port)
routeSend, routeExpect := setupRouteEx(t, rc, opts, routeID)
buf := routeExpect(infoRe)
info := server.Info{}
if err := json.Unmarshal(buf[4:], &info); err != nil {
stackFatalf(t, "Could not unmarshal route info: %v", err)
}
if opts.Cluster.NoAdvertise {
if len(info.ClientConnectURLs) != 0 {
stackFatalf(t, "Expected ClientConnectURLs to be empty, got %v", info.ClientConnectURLs)
}
} else {
if len(info.ClientConnectURLs) == 0 {
stackFatalf(t, "Expected a list of URLs, got none")
}
if info.ClientConnectURLs[0] != clientURL {
stackFatalf(t, "Expected ClientConnectURLs to be %q, got %q", clientURL, info.ClientConnectURLs[0])
}
}
return rc, routeSend, routeExpect
}
sendRouteINFO := func(routeSend sendFun, routeExpect expectFun, urls []string) {
routeInfo := server.Info{}
routeInfo.ID = routeID
routeInfo.Cluster = "xyz"
routeInfo.Host = "127.0.0.1"
routeInfo.Port = 5222
routeInfo.ClientConnectURLs = urls
b, err := json.Marshal(routeInfo)
if err != nil {
stackFatalf(t, "Could not marshal test route info: %v", err)
}
infoJSON := fmt.Sprintf("INFO %s\r\n", b)
routeSend(infoJSON)
routeSend("PING\r\n")
routeExpect(pongRe)
}
checkClientConnectURLS := func(urls, expected []string) {
// Order of array is not guaranteed.
ok := false
if len(urls) == len(expected) {
m := make(map[string]struct{}, len(expected))
for _, url := range expected {
m[url] = struct{}{}
}
ok = true
for _, url := range urls {
if _, present := m[url]; !present {
ok = false
break
}
}
}
if !ok {
stackFatalf(t, "Expected ClientConnectURLs to be %v, got %v", expected, urls)
}
}
checkINFOReceived := func(client net.Conn, clientExpect expectFun, expectedURLs []string) {
if opts.Cluster.NoAdvertise {
expectNothing(t, client)
return
}
buf := clientExpect(infoRe)
info := server.Info{}
if err := json.Unmarshal(buf[4:], &info); err != nil {
stackFatalf(t, "Could not unmarshal route info: %v", err)
}
checkClientConnectURLS(info.ClientConnectURLs, expectedURLs)
}
// Create a route
rc, routeSend, routeExpect := createRoute()
defer rc.Close()
// Send an INFO with single URL
routeClientConnectURLs := []string{"127.0.0.1:5222"}
sendRouteINFO(routeSend, routeExpect, routeClientConnectURLs)
// Expect nothing for old clients
expectNothing(t, oldClient)
// We expect to get the one from the server we connect to and the other route.
expectedURLs := []string{clientURL, routeClientConnectURLs[0]}
// Expect new client to receive an INFO (unless disabled)
checkINFOReceived(newClient, newClientExpect, expectedURLs)
// Disconnect the route
rc.Close()
// Expect nothing for old clients
expectNothing(t, oldClient)
// Expect new client to receive an INFO (unless disabled).
// The content will now have the disconnected route ClientConnectURLs
// removed from the INFO. So it should be the one from the server the
// client is connected to.
checkINFOReceived(newClient, newClientExpect, []string{clientURL})
// Reconnect the route.
rc, routeSend, routeExpect = createRoute()
defer rc.Close()
// Resend the same route INFO json. The server will now send
// the INFO since the disconnected route ClientConnectURLs was
// removed in previous step.
sendRouteINFO(routeSend, routeExpect, routeClientConnectURLs)
// Expect nothing for old clients
expectNothing(t, oldClient)
// Expect new client to receive an INFO (unless disabled)
checkINFOReceived(newClient, newClientExpect, expectedURLs)
// Now stop the route and restart with an additional URL
rc.Close()
// On route disconnect, clients will receive an updated INFO
expectNothing(t, oldClient)
checkINFOReceived(newClient, newClientExpect, []string{clientURL})
rc, routeSend, routeExpect = createRoute()
defer rc.Close()
// Create a client not sending the CONNECT until after route is added
clientNoConnect := createClientConn(t, opts.Host, opts.Port)
defer clientNoConnect.Close()
// Create a client that does not send the first PING yet
clientNoPing := createClientConn(t, opts.Host, opts.Port)
defer clientNoPing.Close()
clientNoPingSend, clientNoPingExpect := setupConnWithProto(t, clientNoPing, clientProtoInfo)
// The route now has an additional URL
routeClientConnectURLs = append(routeClientConnectURLs, "127.0.0.1:7777")
expectedURLs = append(expectedURLs, "127.0.0.1:7777")
// This causes the server to add the route and send INFO to clients
sendRouteINFO(routeSend, routeExpect, routeClientConnectURLs)
// Expect nothing for old clients
expectNothing(t, oldClient)
// Expect new client to receive an INFO, and verify content as expected.
checkINFOReceived(newClient, newClientExpect, expectedURLs)
// Expect nothing yet for client that did not send the PING
expectNothing(t, clientNoPing)
// Now send the first PING
clientNoPingSend("PING\r\n")
// Should receive PONG followed by INFO
// Receive PONG only first
pongBuf := make([]byte, len("PONG\r\n"))
clientNoPing.SetReadDeadline(time.Now().Add(2 * time.Second))
n, err := clientNoPing.Read(pongBuf)
clientNoPing.SetReadDeadline(time.Time{})
if n <= 0 && err != nil {
t.Fatalf("Error reading from conn: %v\n", err)
}
if !pongRe.Match(pongBuf) {
t.Fatalf("Response did not match expected: \n\tReceived:'%q'\n\tExpected:'%s'\n", pongBuf, pongRe)
}
checkINFOReceived(clientNoPing, clientNoPingExpect, expectedURLs)
// Have the client that did not send the connect do it now
clientNoConnectSend, clientNoConnectExpect := setupConnWithProto(t, clientNoConnect, clientProtoInfo)
// Send the PING
clientNoConnectSend("PING\r\n")
// Should receive PONG followed by INFO
// Receive PONG only first
clientNoConnect.SetReadDeadline(time.Now().Add(2 * time.Second))
n, err = clientNoConnect.Read(pongBuf)
clientNoConnect.SetReadDeadline(time.Time{})
if n <= 0 && err != nil {
t.Fatalf("Error reading from conn: %v\n", err)
}
if !pongRe.Match(pongBuf) {
t.Fatalf("Response did not match expected: \n\tReceived:'%q'\n\tExpected:'%s'\n", pongBuf, pongRe)
}
checkINFOReceived(clientNoConnect, clientNoConnectExpect, expectedURLs)
// Create a client connection and verify content of initial INFO contains array
// (but empty if no advertise option is set)
cli := createClientConn(t, opts.Host, opts.Port)
defer cli.Close()
buf := expectResult(t, cli, infoRe)
js := infoRe.FindAllSubmatch(buf, 1)[0][1]
var sinfo server.Info
err = json.Unmarshal(js, &sinfo)
if err != nil {
t.Fatalf("Could not unmarshal INFO json: %v\n", err)
}
if opts.Cluster.NoAdvertise {
if len(sinfo.ClientConnectURLs) != 0 {
t.Fatalf("Expected ClientConnectURLs to be empty, got %v", sinfo.ClientConnectURLs)
}
} else {
checkClientConnectURLS(sinfo.ClientConnectURLs, expectedURLs)
}
// Add a new route
routeID = "Server-C"
rc2, route2Send, route2Expect := createRoute()
defer rc2.Close()
// Send an INFO with single URL
rc2ConnectURLs := []string{"127.0.0.1:8888"}
sendRouteINFO(route2Send, route2Expect, rc2ConnectURLs)
// This is the combined client connect URLs array
totalConnectURLs := expectedURLs
totalConnectURLs = append(totalConnectURLs, rc2ConnectURLs...)
// Expect nothing for old clients
expectNothing(t, oldClient)
// Expect new client to receive an INFO (unless disabled)
checkINFOReceived(newClient, newClientExpect, totalConnectURLs)
// Make first route disconnect
rc.Close()
// Expect nothing for old clients
expectNothing(t, oldClient)
// Expect new client to receive an INFO (unless disabled)
// The content should be the server client is connected to and the last route
checkINFOReceived(newClient, newClientExpect, []string{"127.0.0.1:5242", "127.0.0.1:8888"})
}
opts := LoadConfig("./configs/cluster.conf")
// For this test, be explicit about listen spec.
opts.Host = "127.0.0.1"
opts.Port = 5242
opts.DisableShortFirstPing = true
f(opts)
opts.Cluster.NoAdvertise = true
f(opts)
}
func TestRouteBasicPermissions(t *testing.T) {
srvA, optsA := RunServerWithConfig("./configs/srv_a_perms.conf")
defer srvA.Shutdown()
srvB, optsB := RunServerWithConfig("./configs/srv_b.conf")
defer srvB.Shutdown()
checkClusterFormed(t, srvA, srvB)
// Create a connection to server B
ncb, err := nats.Connect(fmt.Sprintf("nats://127.0.0.1:%d", optsB.Port))
if err != nil {
t.Fatalf("Error on connect: %v", err)
}
defer ncb.Close()
ch := make(chan bool, 1)
cb := func(_ *nats.Msg) {
ch <- true
}
// Subscribe on Server B on "bar" and "baz", which should be accepted by server A across the route
// Due to allowing "*"
subBbar, err := ncb.Subscribe("bar", cb)
if err != nil {
t.Fatalf("Error on subscribe: %v", err)
}
defer subBbar.Unsubscribe()
subBbaz, err := ncb.Subscribe("baz", cb)
if err != nil {
t.Fatalf("Error on subscribe: %v", err)
}
defer subBbaz.Unsubscribe()
ncb.Flush()
if err := checkExpectedSubs(2, srvA, srvB); err != nil {
t.Fatal(err.Error())
}
// Create a connection to server A
nca, err := nats.Connect(fmt.Sprintf("nats://127.0.0.1:%d", optsA.Port))
if err != nil {
t.Fatalf("Error on connect: %v", err)
}
defer nca.Close()
// Publish on bar and baz, messages should be received.
if err := nca.Publish("bar", []byte("hello")); err != nil {
t.Fatalf("Error on publish: %v", err)
}
if err := nca.Publish("baz", []byte("hello")); err != nil {
t.Fatalf("Error on publish: %v", err)
}
for i := 0; i < 2; i++ {
select {
case <-ch:
case <-time.After(time.Second):
t.Fatal("Did not get the messages")
}
}
// From B, start a subscription on "foo", which server A should drop since
// it only exports on "bar" and "baz"
subBfoo, err := ncb.Subscribe("foo", cb)
if err != nil {
t.Fatalf("Error on subscribe: %v", err)
}
defer subBfoo.Unsubscribe()
ncb.Flush()
// B should have now 3 subs
if err := checkExpectedSubs(3, srvB); err != nil {
t.Fatal(err.Error())
}
// and A still 2.
if err := checkExpectedSubs(2, srvA); err != nil {
t.Fatal(err.Error())
}
// So producing on "foo" from A should not be forwarded to B.
if err := nca.Publish("foo", []byte("hello")); err != nil {
t.Fatalf("Error on publish: %v", err)
}
select {
case <-ch:
t.Fatal("Message should not have been received")
case <-time.After(100 * time.Millisecond):
}
// Now on A, create a subscription on something that A does not import,
// like "bat".
subAbat, err := nca.Subscribe("bat", cb)
if err != nil {
t.Fatalf("Error on subscribe: %v", err)
}
defer subAbat.Unsubscribe()
nca.Flush()
// A should have 3 subs
if err := checkExpectedSubs(3, srvA); err != nil {
t.Fatal(err.Error())
}
// And from B, send a message on that subject and make sure it is not received.
if err := ncb.Publish("bat", []byte("hello")); err != nil {
t.Fatalf("Error on publish: %v", err)
}
select {
case <-ch:
t.Fatal("Message should not have been received")
case <-time.After(100 * time.Millisecond):
}
// Stop subscription on foo from B
subBfoo.Unsubscribe()
ncb.Flush()
// Back to 2 subs on B
if err := checkExpectedSubs(2, srvB); err != nil {
t.Fatal(err.Error())
}
// Create subscription on foo from A, this should be forwared to B.
subAfoo, err := nca.Subscribe("foo", cb)
if err != nil {
t.Fatalf("Error on subscribe: %v", err)
}
defer subAfoo.Unsubscribe()
// Create another one so that test the import permissions cache
subAfoo2, err := nca.Subscribe("foo", cb)
if err != nil {
t.Fatalf("Error on subscribe: %v", err)
}
defer subAfoo2.Unsubscribe()
nca.Flush()
// A should have 5 subs
if err := checkExpectedSubs(5, srvA); err != nil {
t.Fatal(err.Error())
}
// B should have 3 since we coalesce te two for 'foo'
if err := checkExpectedSubs(3, srvB); err != nil {
t.Fatal(err.Error())
}
// Send a message from B and check that it is received.
if err := ncb.Publish("foo", []byte("hello")); err != nil {
t.Fatalf("Error on publish: %v", err)
}
for i := 0; i < 2; i++ {
select {
case <-ch:
case <-time.After(time.Second):
t.Fatal("Did not get the message")
}
}
// Close connection from B, and restart server B too.
// We want to make sure that
ncb.Close()
srvB.Shutdown()
// Since B had 2 local subs, A should still only go from 4 to 3
if err := checkExpectedSubs(3, srvA); err != nil {
t.Fatal(err.Error())
}