mirror of
https://github.com/strukturag/nextcloud-spreed-signaling
synced 2024-06-05 07:22:15 +02:00
Use DNS monitor from static GRPC clients configuration.
This commit is contained in:
parent
8db4068989
commit
b1c78f6e9d
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@ -169,7 +169,7 @@ func CreateBackendServerWithClusteringForTestFromConfig(t *testing.T, config1 *g
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t.Cleanup(func() {
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events1.Close()
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})
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client1 := NewGrpcClientsForTest(t, addr2)
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client1, _ := NewGrpcClientsForTest(t, addr2)
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hub1, err := NewHub(config1, events1, grpcServer1, client1, nil, r1, "no-version")
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if err != nil {
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t.Fatal(err)
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@ -198,7 +198,7 @@ func CreateBackendServerWithClusteringForTestFromConfig(t *testing.T, config1 *g
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t.Cleanup(func() {
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events2.Close()
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})
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client2 := NewGrpcClientsForTest(t, addr1)
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client2, _ := NewGrpcClientsForTest(t, addr1)
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hub2, err := NewHub(config2, events2, grpcServer2, client2, nil, r2, "no-version")
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if err != nil {
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t.Fatal(err)
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@ -304,7 +304,7 @@ func TestDnsMonitorIP(t *testing.T) {
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rec1 := newDnsMonitorReceiverForTest(t)
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rec1.Expect(ips, ips, nil, nil)
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entry, err := monitor.Add("https://"+ip, rec1.OnLookup)
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entry, err := monitor.Add(ip+":12345", rec1.OnLookup)
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if err != nil {
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t.Fatal(err)
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}
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262
grpc_client.go
262
grpc_client.go
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@ -49,8 +49,6 @@ const (
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)
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var (
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lookupGrpcIp = net.LookupIP // can be overwritten from tests
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customResolverPrefix atomic.Uint64
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)
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@ -258,15 +256,19 @@ func (c *GrpcClient) GetSessionCount(ctx context.Context, u *url.URL) (uint32, e
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return response.GetCount(), nil
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}
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type grpcClientsList struct {
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clients []*GrpcClient
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entry *DnsMonitorEntry
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}
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type GrpcClients struct {
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mu sync.RWMutex
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clientsMap map[string][]*GrpcClient
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clientsMap map[string]*grpcClientsList
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clients []*GrpcClient
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dnsMonitor *DnsMonitor
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dnsDiscovery bool
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stopping chan struct{}
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stopped chan struct{}
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etcdClient *EtcdClient
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targetPrefix string
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@ -280,15 +282,13 @@ type GrpcClients struct {
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selfCheckWaitGroup sync.WaitGroup
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}
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func NewGrpcClients(config *goconf.ConfigFile, etcdClient *EtcdClient) (*GrpcClients, error) {
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func NewGrpcClients(config *goconf.ConfigFile, etcdClient *EtcdClient, dnsMonitor *DnsMonitor) (*GrpcClients, error) {
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initializedCtx, initializedFunc := context.WithCancel(context.Background())
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result := &GrpcClients{
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dnsMonitor: dnsMonitor,
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etcdClient: etcdClient,
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initializedCtx: initializedCtx,
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initializedFunc: initializedFunc,
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stopping: make(chan struct{}, 1),
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stopped: make(chan struct{}, 1),
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}
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if err := result.load(config, false); err != nil {
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return nil, err
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@ -313,9 +313,6 @@ func (c *GrpcClients) load(config *goconf.ConfigFile, fromReload bool) error {
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switch targetType {
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case GrpcTargetTypeStatic:
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err = c.loadTargetsStatic(config, fromReload, opts...)
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if err == nil && c.dnsDiscovery {
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go c.monitorGrpcIPs()
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}
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case GrpcTargetTypeEtcd:
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err = c.loadTargetsEtcd(config, fromReload, opts...)
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default:
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@ -344,7 +341,7 @@ func (c *GrpcClients) isClientAvailable(target string, client *GrpcClient) bool
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return false
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}
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for _, entry := range entries {
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for _, entry := range entries.clients {
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if entry == client {
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return true
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}
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@ -401,7 +398,20 @@ func (c *GrpcClients) loadTargetsStatic(config *goconf.ConfigFile, fromReload bo
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c.mu.Lock()
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defer c.mu.Unlock()
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clientsMap := make(map[string][]*GrpcClient)
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dnsDiscovery, _ := config.GetBool("grpc", "dnsdiscovery")
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if dnsDiscovery != c.dnsDiscovery {
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if !dnsDiscovery {
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for _, entry := range c.clientsMap {
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if entry.entry != nil {
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c.dnsMonitor.Remove(entry.entry)
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entry.entry = nil
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}
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}
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}
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c.dnsDiscovery = dnsDiscovery
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}
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clientsMap := make(map[string]*grpcClientsList)
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var clients []*GrpcClient
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removeTargets := make(map[string]bool, len(c.clientsMap))
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for target, entries := range c.clientsMap {
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@ -417,7 +427,15 @@ func (c *GrpcClients) loadTargetsStatic(config *goconf.ConfigFile, fromReload bo
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}
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if entries, found := clientsMap[target]; found {
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clients = append(clients, entries...)
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clients = append(clients, entries.clients...)
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if dnsDiscovery && entries.entry == nil {
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entry, err := c.dnsMonitor.Add(target, c.onLookup)
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if err != nil {
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return err
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}
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entries.entry = entry
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}
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delete(removeTargets, target)
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continue
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}
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@ -427,61 +445,58 @@ func (c *GrpcClients) loadTargetsStatic(config *goconf.ConfigFile, fromReload bo
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host = h
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}
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var ips []net.IP
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if net.ParseIP(host) == nil {
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if dnsDiscovery && net.ParseIP(host) == nil {
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// Use dedicated client for each IP address.
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var err error
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ips, err = lookupGrpcIp(host)
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entry, err := c.dnsMonitor.Add(target, c.onLookup)
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if err != nil {
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log.Printf("Could not lookup %s: %s", host, err)
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// Make sure updating continues even if initial lookup failed.
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clientsMap[target] = nil
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continue
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}
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} else {
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// Connect directly to IP address.
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ips = []net.IP{nil}
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}
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for _, ip := range ips {
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client, err := NewGrpcClient(target, ip, opts...)
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if err != nil {
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for _, clients := range clientsMap {
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for _, client := range clients {
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c.closeClient(client)
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}
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}
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return err
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}
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c.selfCheckWaitGroup.Add(1)
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go c.checkIsSelf(context.Background(), target, client)
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log.Printf("Adding %s as GRPC target", client.Target())
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clientsMap[target] = append(clientsMap[target], client)
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clients = append(clients, client)
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clientsMap[target] = &grpcClientsList{
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entry: entry,
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}
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continue
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}
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client, err := NewGrpcClient(target, nil, opts...)
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if err != nil {
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for _, entry := range clientsMap {
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for _, client := range entry.clients {
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c.closeClient(client)
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}
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if entry.entry != nil {
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c.dnsMonitor.Remove(entry.entry)
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entry.entry = nil
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}
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}
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return err
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}
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c.selfCheckWaitGroup.Add(1)
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go c.checkIsSelf(context.Background(), target, client)
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log.Printf("Adding %s as GRPC target", client.Target())
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entry, found := clientsMap[target]
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if !found {
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entry = &grpcClientsList{}
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}
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entry.clients = append(entry.clients, client)
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clients = append(clients, client)
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}
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for target := range removeTargets {
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if clients, found := clientsMap[target]; found {
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for _, client := range clients {
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if entry, found := clientsMap[target]; found {
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for _, client := range entry.clients {
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log.Printf("Deleting GRPC target %s", client.Target())
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c.closeClient(client)
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}
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delete(clientsMap, target)
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}
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}
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dnsDiscovery, _ := config.GetBool("grpc", "dnsdiscovery")
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if dnsDiscovery != c.dnsDiscovery {
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if !dnsDiscovery && fromReload {
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c.stopping <- struct{}{}
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<-c.stopped
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}
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c.dnsDiscovery = dnsDiscovery
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if dnsDiscovery && fromReload {
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go c.monitorGrpcIPs()
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if entry.entry != nil {
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c.dnsMonitor.Remove(entry.entry)
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entry.entry = nil
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}
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delete(clientsMap, target)
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}
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}
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@ -492,91 +507,61 @@ func (c *GrpcClients) loadTargetsStatic(config *goconf.ConfigFile, fromReload bo
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return nil
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}
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func (c *GrpcClients) monitorGrpcIPs() {
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log.Printf("Start monitoring GRPC client IPs")
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ticker := time.NewTicker(updateDnsInterval)
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for {
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select {
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case <-ticker.C:
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c.updateGrpcIPs()
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case <-c.stopping:
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c.stopped <- struct{}{}
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return
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}
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}
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}
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func (c *GrpcClients) updateGrpcIPs() {
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func (c *GrpcClients) onLookup(entry *DnsMonitorEntry, all []net.IP, added []net.IP, keep []net.IP, removed []net.IP) {
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c.mu.Lock()
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defer c.mu.Unlock()
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target := entry.URL()
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e, found := c.clientsMap[target]
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if !found {
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return
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}
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opts := c.dialOptions.Load().([]grpc.DialOption)
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mapModified := false
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for target, clients := range c.clientsMap {
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host := target
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if h, _, err := net.SplitHostPort(target); err == nil {
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host = h
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}
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if net.ParseIP(host) != nil {
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// No need to lookup endpoints that connect to IP addresses.
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continue
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}
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ips, err := lookupGrpcIp(host)
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if err != nil {
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log.Printf("Could not lookup %s: %s", host, err)
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continue
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}
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var newClients []*GrpcClient
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changed := false
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for _, client := range clients {
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found := false
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for idx, ip := range ips {
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if ip.Equal(client.ip) {
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ips = append(ips[:idx], ips[idx+1:]...)
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found = true
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newClients = append(newClients, client)
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break
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}
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}
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if !found {
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changed = true
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var newClients []*GrpcClient
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for _, ip := range removed {
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for _, client := range e.clients {
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if ip.Equal(client.ip) {
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mapModified = true
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log.Printf("Removing connection to %s", client.Target())
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c.closeClient(client)
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c.wakeupForTesting()
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}
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}
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}
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for _, ip := range ips {
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client, err := NewGrpcClient(target, ip, opts...)
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if err != nil {
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log.Printf("Error creating client to %s with IP %s: %s", target, ip.String(), err)
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continue
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for _, ip := range keep {
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for _, client := range e.clients {
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if ip.Equal(client.ip) {
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newClients = append(newClients, client)
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}
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c.selfCheckWaitGroup.Add(1)
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go c.checkIsSelf(context.Background(), target, client)
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log.Printf("Adding %s as GRPC target", client.Target())
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newClients = append(newClients, client)
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changed = true
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c.wakeupForTesting()
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}
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if changed {
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c.clientsMap[target] = newClients
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mapModified = true
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}
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}
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for _, ip := range added {
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client, err := NewGrpcClient(target, ip, opts...)
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if err != nil {
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log.Printf("Error creating client to %s with IP %s: %s", target, ip.String(), err)
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continue
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}
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c.selfCheckWaitGroup.Add(1)
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go c.checkIsSelf(context.Background(), target, client)
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log.Printf("Adding %s as GRPC target", client.Target())
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newClients = append(newClients, client)
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mapModified = true
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c.wakeupForTesting()
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}
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if mapModified {
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c.clientsMap[target].clients = newClients
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c.clients = make([]*GrpcClient, 0, len(c.clientsMap))
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for _, clients := range c.clientsMap {
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c.clients = append(c.clients, clients...)
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for _, entry := range c.clientsMap {
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c.clients = append(c.clients, entry.clients...)
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}
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statsGrpcClients.Set(float64(len(c.clients)))
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}
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@ -684,9 +669,11 @@ func (c *GrpcClients) EtcdKeyUpdated(client *EtcdClient, key string, data []byte
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log.Printf("Adding %s as GRPC target", cl.Target())
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if c.clientsMap == nil {
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c.clientsMap = make(map[string][]*GrpcClient)
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c.clientsMap = make(map[string]*grpcClientsList)
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}
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c.clientsMap[info.Address] = &grpcClientsList{
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clients: []*GrpcClient{cl},
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}
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c.clientsMap[info.Address] = []*GrpcClient{cl}
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c.clients = append(c.clients, cl)
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c.targetInformation[key] = &info
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statsGrpcClients.Inc()
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@ -709,19 +696,19 @@ func (c *GrpcClients) removeEtcdClientLocked(key string) {
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}
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delete(c.targetInformation, key)
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clients, found := c.clientsMap[info.Address]
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entry, found := c.clientsMap[info.Address]
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if !found {
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return
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}
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for _, client := range clients {
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for _, client := range entry.clients {
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log.Printf("Removing connection to %s (from %s)", client.Target(), key)
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c.closeClient(client)
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}
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delete(c.clientsMap, info.Address)
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c.clients = make([]*GrpcClient, 0, len(c.clientsMap))
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for _, clients := range c.clientsMap {
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c.clients = append(c.clients, clients...)
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for _, entry := range c.clientsMap {
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c.clients = append(c.clients, entry.clients...)
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}
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statsGrpcClients.Dec()
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c.wakeupForTesting()
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@ -757,21 +744,22 @@ func (c *GrpcClients) Close() {
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c.mu.Lock()
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defer c.mu.Unlock()
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for _, clients := range c.clientsMap {
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for _, client := range clients {
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for _, entry := range c.clientsMap {
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for _, client := range entry.clients {
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if err := client.Close(); err != nil {
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log.Printf("Error closing client to %s: %s", client.Target(), err)
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}
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}
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if entry.entry != nil {
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c.dnsMonitor.Remove(entry.entry)
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entry.entry = nil
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}
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}
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c.clients = nil
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c.clientsMap = nil
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if c.dnsDiscovery {
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c.stopping <- struct{}{}
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<-c.stopped
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c.dnsDiscovery = false
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}
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c.dnsDiscovery = false
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if c.etcdClient != nil {
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c.etcdClient.RemoveListener(c)
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|
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@ -46,8 +46,9 @@ func (c *GrpcClients) getWakeupChannelForTesting() <-chan struct{} {
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return ch
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}
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func NewGrpcClientsForTestWithConfig(t *testing.T, config *goconf.ConfigFile, etcdClient *EtcdClient) *GrpcClients {
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client, err := NewGrpcClients(config, etcdClient)
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func NewGrpcClientsForTestWithConfig(t *testing.T, config *goconf.ConfigFile, etcdClient *EtcdClient) (*GrpcClients, *DnsMonitor) {
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dnsMonitor := newDnsMonitorForTest(t, time.Hour) // will be updated manually
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client, err := NewGrpcClients(config, etcdClient, dnsMonitor)
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if err != nil {
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t.Fatal(err)
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}
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@ -55,10 +56,10 @@ func NewGrpcClientsForTestWithConfig(t *testing.T, config *goconf.ConfigFile, et
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client.Close()
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})
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return client
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return client, dnsMonitor
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}
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func NewGrpcClientsForTest(t *testing.T, addr string) *GrpcClients {
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func NewGrpcClientsForTest(t *testing.T, addr string) (*GrpcClients, *DnsMonitor) {
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config := goconf.NewConfigFile()
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config.AddOption("grpc", "targets", addr)
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config.AddOption("grpc", "dnsdiscovery", "true")
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@ -66,7 +67,7 @@ func NewGrpcClientsForTest(t *testing.T, addr string) *GrpcClients {
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return NewGrpcClientsForTestWithConfig(t, config, nil)
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}
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func NewGrpcClientsWithEtcdForTest(t *testing.T, etcd *embed.Etcd) *GrpcClients {
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func NewGrpcClientsWithEtcdForTest(t *testing.T, etcd *embed.Etcd) (*GrpcClients, *DnsMonitor) {
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config := goconf.NewConfigFile()
|
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config.AddOption("etcd", "endpoints", etcd.Config().ListenClientUrls[0].String())
|
||||
|
||||
|
@ -116,7 +117,7 @@ func Test_GrpcClients_EtcdInitial(t *testing.T) {
|
|||
SetEtcdValue(etcd, "/grpctargets/one", []byte("{\"address\":\""+addr1+"\"}"))
|
||||
SetEtcdValue(etcd, "/grpctargets/two", []byte("{\"address\":\""+addr2+"\"}"))
|
||||
|
||||
client := NewGrpcClientsWithEtcdForTest(t, etcd)
|
||||
client, _ := NewGrpcClientsWithEtcdForTest(t, etcd)
|
||||
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
|
||||
defer cancel()
|
||||
if err := client.WaitForInitialized(ctx); err != nil {
|
||||
|
@ -130,7 +131,7 @@ func Test_GrpcClients_EtcdInitial(t *testing.T) {
|
|||
|
||||
func Test_GrpcClients_EtcdUpdate(t *testing.T) {
|
||||
etcd := NewEtcdForTest(t)
|
||||
client := NewGrpcClientsWithEtcdForTest(t, etcd)
|
||||
client, _ := NewGrpcClientsWithEtcdForTest(t, etcd)
|
||||
ch := client.getWakeupChannelForTesting()
|
||||
|
||||
ctx, cancel := context.WithTimeout(context.Background(), testTimeout)
|
||||
|
@ -184,7 +185,7 @@ func Test_GrpcClients_EtcdUpdate(t *testing.T) {
|
|||
|
||||
func Test_GrpcClients_EtcdIgnoreSelf(t *testing.T) {
|
||||
etcd := NewEtcdForTest(t)
|
||||
client := NewGrpcClientsWithEtcdForTest(t, etcd)
|
||||
client, _ := NewGrpcClientsWithEtcdForTest(t, etcd)
|
||||
ch := client.getWakeupChannelForTesting()
|
||||
|
||||
ctx, cancel := context.WithTimeout(context.Background(), testTimeout)
|
||||
|
@ -227,26 +228,20 @@ func Test_GrpcClients_EtcdIgnoreSelf(t *testing.T) {
|
|||
}
|
||||
|
||||
func Test_GrpcClients_DnsDiscovery(t *testing.T) {
|
||||
var ipsResult []net.IP
|
||||
lookupGrpcIp = func(host string) ([]net.IP, error) {
|
||||
if host == "testgrpc" {
|
||||
return ipsResult, nil
|
||||
}
|
||||
|
||||
return nil, fmt.Errorf("unknown host")
|
||||
}
|
||||
lookup := newMockDnsLookupForTest(t)
|
||||
target := "testgrpc:12345"
|
||||
ip1 := net.ParseIP("192.168.0.1")
|
||||
ip2 := net.ParseIP("192.168.0.2")
|
||||
targetWithIp1 := fmt.Sprintf("%s (%s)", target, ip1)
|
||||
targetWithIp2 := fmt.Sprintf("%s (%s)", target, ip2)
|
||||
ipsResult = []net.IP{ip1}
|
||||
client := NewGrpcClientsForTest(t, target)
|
||||
lookup.Set("testgrpc", []net.IP{ip1})
|
||||
client, dnsMonitor := NewGrpcClientsForTest(t, target)
|
||||
ch := client.getWakeupChannelForTesting()
|
||||
|
||||
ctx, cancel := context.WithTimeout(context.Background(), testTimeout)
|
||||
defer cancel()
|
||||
|
||||
dnsMonitor.checkHostnames()
|
||||
if clients := client.GetClients(); len(clients) != 1 {
|
||||
t.Errorf("Expected one client, got %+v", clients)
|
||||
} else if clients[0].Target() != targetWithIp1 {
|
||||
|
@ -255,9 +250,9 @@ func Test_GrpcClients_DnsDiscovery(t *testing.T) {
|
|||
t.Errorf("Expected IP %s, got %s", ip1, clients[0].ip)
|
||||
}
|
||||
|
||||
ipsResult = []net.IP{ip1, ip2}
|
||||
lookup.Set("testgrpc", []net.IP{ip1, ip2})
|
||||
drainWakeupChannel(ch)
|
||||
client.updateGrpcIPs()
|
||||
dnsMonitor.checkHostnames()
|
||||
waitForEvent(ctx, t, ch)
|
||||
|
||||
if clients := client.GetClients(); len(clients) != 2 {
|
||||
|
@ -272,9 +267,9 @@ func Test_GrpcClients_DnsDiscovery(t *testing.T) {
|
|||
t.Errorf("Expected IP %s, got %s", ip2, clients[1].ip)
|
||||
}
|
||||
|
||||
ipsResult = []net.IP{ip2}
|
||||
lookup.Set("testgrpc", []net.IP{ip2})
|
||||
drainWakeupChannel(ch)
|
||||
client.updateGrpcIPs()
|
||||
dnsMonitor.checkHostnames()
|
||||
waitForEvent(ctx, t, ch)
|
||||
|
||||
if clients := client.GetClients(); len(clients) != 1 {
|
||||
|
@ -287,22 +282,11 @@ func Test_GrpcClients_DnsDiscovery(t *testing.T) {
|
|||
}
|
||||
|
||||
func Test_GrpcClients_DnsDiscoveryInitialFailed(t *testing.T) {
|
||||
var ipsResult []net.IP
|
||||
lookupGrpcIp = func(host string) ([]net.IP, error) {
|
||||
if host == "testgrpc" && len(ipsResult) > 0 {
|
||||
return ipsResult, nil
|
||||
}
|
||||
|
||||
return nil, &net.DNSError{
|
||||
Err: "no such host",
|
||||
Name: host,
|
||||
IsNotFound: true,
|
||||
}
|
||||
}
|
||||
lookup := newMockDnsLookupForTest(t)
|
||||
target := "testgrpc:12345"
|
||||
ip1 := net.ParseIP("192.168.0.1")
|
||||
targetWithIp1 := fmt.Sprintf("%s (%s)", target, ip1)
|
||||
client := NewGrpcClientsForTest(t, target)
|
||||
client, dnsMonitor := NewGrpcClientsForTest(t, target)
|
||||
ch := client.getWakeupChannelForTesting()
|
||||
|
||||
testCtx, testCtxCancel := context.WithTimeout(context.Background(), testTimeout)
|
||||
|
@ -318,9 +302,9 @@ func Test_GrpcClients_DnsDiscoveryInitialFailed(t *testing.T) {
|
|||
t.Errorf("Expected no client, got %+v", clients)
|
||||
}
|
||||
|
||||
ipsResult = []net.IP{ip1}
|
||||
lookup.Set("testgrpc", []net.IP{ip1})
|
||||
drainWakeupChannel(ch)
|
||||
client.updateGrpcIPs()
|
||||
dnsMonitor.checkHostnames()
|
||||
waitForEvent(testCtx, t, ch)
|
||||
|
||||
if clients := client.GetClients(); len(clients) != 1 {
|
||||
|
@ -370,7 +354,7 @@ func Test_GrpcClients_Encryption(t *testing.T) {
|
|||
clientConfig.AddOption("grpc", "clientcertificate", clientCertFile)
|
||||
clientConfig.AddOption("grpc", "clientkey", clientPrivkeyFile)
|
||||
clientConfig.AddOption("grpc", "serverca", serverCertFile)
|
||||
clients := NewGrpcClientsForTestWithConfig(t, clientConfig, nil)
|
||||
clients, _ := NewGrpcClientsForTestWithConfig(t, clientConfig, nil)
|
||||
|
||||
ctx, cancel1 := context.WithTimeout(context.Background(), time.Second)
|
||||
defer cancel1()
|
||||
|
|
|
@ -211,7 +211,7 @@ func CreateClusteredHubsForTestWithConfig(t *testing.T, getConfigFunc func(*http
|
|||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
client1 := NewGrpcClientsForTest(t, addr2)
|
||||
client1, _ := NewGrpcClientsForTest(t, addr2)
|
||||
h1, err := NewHub(config1, events1, grpcServer1, client1, nil, r1, "no-version")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
|
@ -231,7 +231,7 @@ func CreateClusteredHubsForTestWithConfig(t *testing.T, getConfigFunc func(*http
|
|||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
client2 := NewGrpcClientsForTest(t, addr1)
|
||||
client2, _ := NewGrpcClientsForTest(t, addr1)
|
||||
h2, err := NewHub(config2, events2, grpcServer2, client2, nil, r2, "no-version")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
|
|
|
@ -66,9 +66,6 @@ const (
|
|||
defaultProxyTimeoutSeconds = 2
|
||||
|
||||
rttLogDuration = 500 * time.Millisecond
|
||||
|
||||
// Update service IP addresses every 10 seconds.
|
||||
updateDnsInterval = 10 * time.Second
|
||||
)
|
||||
|
||||
type McuProxy interface {
|
||||
|
|
|
@ -183,7 +183,7 @@ func main() {
|
|||
}()
|
||||
defer rpcServer.Close()
|
||||
|
||||
rpcClients, err := signaling.NewGrpcClients(config, etcdClient)
|
||||
rpcClients, err := signaling.NewGrpcClients(config, etcdClient, dnsMonitor)
|
||||
if err != nil {
|
||||
log.Fatalf("Could not create RPC clients: %s", err)
|
||||
}
|
||||
|
|
Loading…
Reference in a new issue