refactor(core): select discovery backend from configured type (#3772)

* refactor(core): select discovery backend from configured type

* refactor(core): select discovery backend from configured type

* fix(core): restore discovery register API compatibility

* chore: remove local tooling entries from gitignore

.gitignore

@@ -387,4 +387,4 @@ Sessionx.vim
 
 # End of https://www.toptal.com/developers/gitignore/api/go,git,vim,tags,test,emacs,backup,jetbrains
 .idea
-dist/
+dist/

pkg/common/discoveryregister/discoveryregister.go

@@ -15,32 +15,40 @@
 package discoveryregister
 
 import (
+	"strings"
 	"time"
 
+	"google.golang.org/grpc"
+
 	"github.com/openimsdk/open-im-server/v3/pkg/common/config"
 	"github.com/openimsdk/tools/discovery"
 	"github.com/openimsdk/tools/discovery/etcd"
 	"github.com/openimsdk/tools/discovery/kubernetes"
 	"github.com/openimsdk/tools/errs"
 	"github.com/openimsdk/tools/utils/runtimeenv"
-	"google.golang.org/grpc"
 )
 
 // NewDiscoveryRegister creates a new service discovery and registry client based on the provided environment type.
 func NewDiscoveryRegister(discovery *config.Discovery, share *config.Share, watchNames []string) (discovery.SvcDiscoveryRegistry, error) {
-	if runtimeenv.RuntimeEnvironment() == config.KUBERNETES {
-		namespace := discovery.Kubernetes.Namespace
-		if namespace == "" {
-			namespace = "default"
+	runtimeEnvironment := runtimeenv.RuntimeEnvironment()
+	discoveryType := discovery.Enable
+	if discoveryType == "" && runtimeEnvironment == config.KUBERNETES {
+		discoveryType = config.KUBERNETES
+	}
+	if discoveryType == config.KUBERNETES && runtimeEnvironment != config.KUBERNETES {
+		return nil, errs.New("unsupported discovery type", "type", discoveryType).Wrap()
+	}
+	switch discoveryType {
+	case config.KUBERNETES:
+		for i := range watchNames {
+			watchNames[i] = strings.Split(watchNames[i], ":")[0]
 		}
-		return kubernetes.NewConnManager(namespace, watchNames,
+		return kubernetes.NewConnManager(discovery.Kubernetes.Namespace, watchNames,
 			grpc.WithDefaultCallOptions(
 				grpc.MaxCallSendMsgSize(1024*1024*20),
 			),
+			grpc.WithDefaultServiceConfig(`{"loadBalancingPolicy":"round_robin"}`),
 		)
-	}
-
-	switch discovery.Enable {
 	case config.ETCD:
 		return etcd.NewSvcDiscoveryRegistry(
 			discovery.Etcd.RootDirectory,
@@ -50,6 +58,6 @@ func NewDiscoveryRegister(discovery *config.Discovery, share *config.Share, watc
 			etcd.WithMaxCallSendMsgSize(20*1024*1024),
 			etcd.WithUsernameAndPassword(discovery.Etcd.Username, discovery.Etcd.Password))
 	default:
-		return nil, errs.New("unsupported discovery type", "type", discovery.Enable).Wrap()
+		return nil, errs.New("unsupported discovery type", "type", discoveryType).Wrap()
 	}
 }