builder

pkg/discoveryregistry/zookeeper/resolver.go

@@ -0,0 +1,51 @@
+package openKeeper
+
+import (
+	"context"
+	"strings"
+	"sync"
+
+	"github.com/OpenIMSDK/Open-IM-Server/pkg/common/log"
+	"google.golang.org/grpc/resolver"
+)
+
+type Resolver struct {
+	target resolver.Target
+	cc     resolver.ClientConn
+	addrs  []resolver.Address
+	lock   sync.RWMutex
+
+	getConnsRemote func(serviceName string) (conns []resolver.Address, err error)
+}
+
+func (r *Resolver) ResolveNow(o resolver.ResolveNowOptions) {
+	log.ZDebug(context.Background(), "start resolve now", "target", r.target)
+	newConns, err := r.getConnsRemote(strings.TrimLeft(r.target.URL.Path, "/"))
+	if err != nil {
+		return
+	}
+	log.ZDebug(context.Background(), "resolve now", "newConns", newConns, "target", r.target)
+	r.lock.Lock()
+	r.addrs = newConns
+	r.lock.Unlock()
+	r.cc.UpdateState(resolver.State{Addresses: r.addrs})
+	log.ZDebug(context.Background(), "resolve now ok", "newConns", newConns, "target", r.target)
+}
+
+func (s *Resolver) Close() {}
+
+func (s *ZkClient) Build(target resolver.Target, cc resolver.ClientConn, opts resolver.BuildOptions) (resolver.Resolver, error) {
+	log.ZDebug(context.Background(), "build resolver", "target", target, "opts", opts, "cc", cc)
+	r := &Resolver{}
+	r.target = target
+	r.cc = cc
+	r.getConnsRemote = s.GetConnsRemote
+	r.ResolveNow(resolver.ResolveNowOptions{})
+	s.lock.Lock()
+	defer s.lock.Unlock()
+	s.resolvers[strings.TrimLeft(target.URL.Path, "/")] = r
+	log.ZDebug(context.Background(), "build resolver ok", "target", target)
+	return r, nil
+}
+
+func (s *ZkClient) Scheme() string { return s.scheme }