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Prince Pereirac1c21d62021-04-22 08:38:15 +00001// Copyright 2016 The etcd Authors
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7// http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15package clientv3
16
17import (
18 "context"
19 "crypto/tls"
20 "time"
21
22 "go.uber.org/zap"
23 "google.golang.org/grpc"
24)
25
26type Config struct {
27 // Endpoints is a list of URLs.
28 Endpoints []string `json:"endpoints"`
29
30 // AutoSyncInterval is the interval to update endpoints with its latest members.
31 // 0 disables auto-sync. By default auto-sync is disabled.
32 AutoSyncInterval time.Duration `json:"auto-sync-interval"`
33
34 // DialTimeout is the timeout for failing to establish a connection.
35 DialTimeout time.Duration `json:"dial-timeout"`
36
37 // DialKeepAliveTime is the time after which client pings the server to see if
38 // transport is alive.
39 DialKeepAliveTime time.Duration `json:"dial-keep-alive-time"`
40
41 // DialKeepAliveTimeout is the time that the client waits for a response for the
42 // keep-alive probe. If the response is not received in this time, the connection is closed.
43 DialKeepAliveTimeout time.Duration `json:"dial-keep-alive-timeout"`
44
45 // MaxCallSendMsgSize is the client-side request send limit in bytes.
46 // If 0, it defaults to 2.0 MiB (2 * 1024 * 1024).
47 // Make sure that "MaxCallSendMsgSize" < server-side default send/recv limit.
48 // ("--max-request-bytes" flag to etcd or "embed.Config.MaxRequestBytes").
49 MaxCallSendMsgSize int
50
51 // MaxCallRecvMsgSize is the client-side response receive limit.
52 // If 0, it defaults to "math.MaxInt32", because range response can
53 // easily exceed request send limits.
54 // Make sure that "MaxCallRecvMsgSize" >= server-side default send/recv limit.
55 // ("--max-request-bytes" flag to etcd or "embed.Config.MaxRequestBytes").
56 MaxCallRecvMsgSize int
57
58 // TLS holds the client secure credentials, if any.
59 TLS *tls.Config
60
61 // Username is a user name for authentication.
62 Username string `json:"username"`
63
64 // Password is a password for authentication.
65 Password string `json:"password"`
66
67 // RejectOldCluster when set will refuse to create a client against an outdated cluster.
68 RejectOldCluster bool `json:"reject-old-cluster"`
69
70 // DialOptions is a list of dial options for the grpc client (e.g., for interceptors).
71 // For example, pass "grpc.WithBlock()" to block until the underlying connection is up.
72 // Without this, Dial returns immediately and connecting the server happens in background.
73 DialOptions []grpc.DialOption
74
75 // Context is the default client context; it can be used to cancel grpc dial out and
76 // other operations that do not have an explicit context.
77 Context context.Context
78
79 // LogConfig configures client-side logger.
80 // If nil, use the default logger.
81 // TODO: configure gRPC logger
82 LogConfig *zap.Config
83
84 // PermitWithoutStream when set will allow client to send keepalive pings to server without any active streams(RPCs).
85 PermitWithoutStream bool `json:"permit-without-stream"`
86
87 // TODO: support custom balancer picker
88}