mirror of
https://github.com/etcd-io/etcd.git
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6a33f0ffd5
The simpleBalancer.Get() blocks grpc.Invoke() even when the Invoke() is called with the FailFast option. Therefore currently any requests with the FastFail option actually doesn't fail fast. They get blocked when there is no endpoints available. Get() method needs to respect the BlockingWait option when picks up an endpoint address from the list and fail immediately when the option is enabled and no endpoint is available.
103 lines
3.1 KiB
Go
103 lines
3.1 KiB
Go
// Copyright 2016 The etcd Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package clientv3
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import (
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pb "github.com/coreos/etcd/etcdserver/etcdserverpb"
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"golang.org/x/net/context"
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"google.golang.org/grpc"
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)
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type (
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Member pb.Member
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MemberListResponse pb.MemberListResponse
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MemberAddResponse pb.MemberAddResponse
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MemberRemoveResponse pb.MemberRemoveResponse
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MemberUpdateResponse pb.MemberUpdateResponse
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)
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type Cluster interface {
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// MemberList lists the current cluster membership.
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MemberList(ctx context.Context) (*MemberListResponse, error)
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// MemberAdd adds a new member into the cluster.
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MemberAdd(ctx context.Context, peerAddrs []string) (*MemberAddResponse, error)
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// MemberRemove removes an existing member from the cluster.
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MemberRemove(ctx context.Context, id uint64) (*MemberRemoveResponse, error)
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// MemberUpdate updates the peer addresses of the member.
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MemberUpdate(ctx context.Context, id uint64, peerAddrs []string) (*MemberUpdateResponse, error)
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}
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type cluster struct {
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remote pb.ClusterClient
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}
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func NewCluster(c *Client) Cluster {
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return &cluster{remote: RetryClusterClient(c)}
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}
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func (c *cluster) MemberAdd(ctx context.Context, peerAddrs []string) (*MemberAddResponse, error) {
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r := &pb.MemberAddRequest{PeerURLs: peerAddrs}
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resp, err := c.remote.MemberAdd(ctx, r, grpc.FailFast(false))
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if err == nil {
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return (*MemberAddResponse)(resp), nil
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}
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if isHaltErr(ctx, err) {
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return nil, toErr(ctx, err)
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}
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return nil, toErr(ctx, err)
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}
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func (c *cluster) MemberRemove(ctx context.Context, id uint64) (*MemberRemoveResponse, error) {
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r := &pb.MemberRemoveRequest{ID: id}
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resp, err := c.remote.MemberRemove(ctx, r, grpc.FailFast(false))
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if err == nil {
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return (*MemberRemoveResponse)(resp), nil
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}
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if isHaltErr(ctx, err) {
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return nil, toErr(ctx, err)
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}
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return nil, toErr(ctx, err)
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}
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func (c *cluster) MemberUpdate(ctx context.Context, id uint64, peerAddrs []string) (*MemberUpdateResponse, error) {
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// it is safe to retry on update.
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for {
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r := &pb.MemberUpdateRequest{ID: id, PeerURLs: peerAddrs}
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resp, err := c.remote.MemberUpdate(ctx, r, grpc.FailFast(false))
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if err == nil {
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return (*MemberUpdateResponse)(resp), nil
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}
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if isHaltErr(ctx, err) {
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return nil, toErr(ctx, err)
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}
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}
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}
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func (c *cluster) MemberList(ctx context.Context) (*MemberListResponse, error) {
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// it is safe to retry on list.
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for {
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resp, err := c.remote.MemberList(ctx, &pb.MemberListRequest{}, grpc.FailFast(false))
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if err == nil {
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return (*MemberListResponse)(resp), nil
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}
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if isHaltErr(ctx, err) {
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return nil, toErr(ctx, err)
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}
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}
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}
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