🎉: init project

internal/invoke/resolve_v2.go

@@ -0,0 +1,43 @@
+package invoke
+
+import (
+	"github.com/sirupsen/logrus"
+	"sync"
+
+	"google.golang.org/grpc/resolver"
+)
+
+type Builder struct{}
+
+func (b *Builder) Scheme() string {
+	return SCHEME
+}
+
+func (b *Builder) Build(target resolver.Target, cc resolver.ClientConn, opts resolver.BuildOptions) (resolver.Resolver, error) {
+	cr := &Resolver{
+		cc:     cc,
+		target: target,
+	}
+
+	cr.ResolveNow(resolver.ResolveNowOptions{})
+
+	return cr, nil
+}
+
+type Resolver struct {
+	target resolver.Target
+	cc     resolver.ClientConn
+}
+
+func (r *Resolver) ResolveNow(o resolver.ResolveNowOptions) {
+	logrus.Tracef("resolve_v2 ResolveNow => target: %s, %v", r.target.URL.Host, ips)
+	_ = r.cc.UpdateState(ips[r.target.URL.Host])
+}
+
+func (cr *Resolver) Close() {}
+
+var (
+	locker    = &sync.Mutex{}
+	myBuilder = &Builder{}
+	ips       = map[string]resolver.State{}
+)