From d6287924dee3c5bf38aa5facc81883fb4bebe19a Mon Sep 17 00:00:00 2001
From: EDDYCJY <313687982@qq.com>
Date: Wed, 29 Jan 2020 14:35:35 +0800
Subject: [PATCH] clientv3: fix grpc-go(v1.27.0) incompatible changes to
 balancer/resolver.

---
 clientv3/balancer/picker/err.go                 | 2 +-
 clientv3/balancer/picker/roundrobin_balanced.go | 2 +-
 clientv3/balancer/resolver/endpoint/endpoint.go | 4 ++--
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/clientv3/balancer/picker/err.go b/clientv3/balancer/picker/err.go
index 9e043789c8d..f4b941d6529 100644
--- a/clientv3/balancer/picker/err.go
+++ b/clientv3/balancer/picker/err.go
@@ -34,6 +34,6 @@ func (ep *errPicker) String() string {
 	return ep.p.String()
 }
 
-func (ep *errPicker) Pick(context.Context, balancer.PickOptions) (balancer.SubConn, func(balancer.DoneInfo), error) {
+func (ep *errPicker) Pick(context.Context, balancer.PickInfo) (balancer.SubConn, func(balancer.DoneInfo), error) {
 	return nil, nil, ep.err
 }
diff --git a/clientv3/balancer/picker/roundrobin_balanced.go b/clientv3/balancer/picker/roundrobin_balanced.go
index 1b8b2857378..e3971ecc421 100644
--- a/clientv3/balancer/picker/roundrobin_balanced.go
+++ b/clientv3/balancer/picker/roundrobin_balanced.go
@@ -52,7 +52,7 @@ type rrBalanced struct {
 func (rb *rrBalanced) String() string { return rb.p.String() }
 
 // Pick is called for every client request.
-func (rb *rrBalanced) Pick(ctx context.Context, opts balancer.PickOptions) (balancer.SubConn, func(balancer.DoneInfo), error) {
+func (rb *rrBalanced) Pick(ctx context.Context, opts balancer.PickInfo) (balancer.SubConn, func(balancer.DoneInfo), error) {
 	rb.mu.RLock()
 	n := len(rb.scs)
 	rb.mu.RUnlock()
diff --git a/clientv3/balancer/resolver/endpoint/endpoint.go b/clientv3/balancer/resolver/endpoint/endpoint.go
index 864b5df6426..2837bd4180b 100644
--- a/clientv3/balancer/resolver/endpoint/endpoint.go
+++ b/clientv3/balancer/resolver/endpoint/endpoint.go
@@ -111,7 +111,7 @@ func (e *ResolverGroup) Close() {
 }
 
 // Build creates or reuses an etcd resolver for the etcd cluster name identified by the authority part of the target.
-func (b *builder) Build(target resolver.Target, cc resolver.ClientConn, opts resolver.BuildOption) (resolver.Resolver, error) {
+func (b *builder) Build(target resolver.Target, cc resolver.ClientConn, opts resolver.BuildOptions) (resolver.Resolver, error) {
 	if len(target.Authority) < 1 {
 		return nil, fmt.Errorf("'etcd' target scheme requires non-empty authority identifying etcd cluster being routed to")
 	}
@@ -179,7 +179,7 @@ func epsToAddrs(eps ...string) (addrs []resolver.Address) {
 	return addrs
 }
 
-func (*Resolver) ResolveNow(o resolver.ResolveNowOption) {}
+func (*Resolver) ResolveNow(o resolver.ResolveNowOptions) {}
 
 func (r *Resolver) Close() {
 	es, err := bldr.getResolverGroup(r.endpointID)