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// Copyright 2016 The etcd Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package clientv3
import (
"context"
"crypto/tls"
"time"
"go.uber.org/zap"
"google.golang.org/grpc"
)
type Config struct {
// Endpoints is a list of URLs.
Endpoints []string `json:"endpoints"`
// AutoSyncInterval is the interval to update endpoints with its latest members.
// 0 disables auto-sync. By default auto-sync is disabled.
AutoSyncInterval time.Duration `json:"auto-sync-interval"`
// DialTimeout is the timeout for failing to establish a connection.
DialTimeout time.Duration `json:"dial-timeout"`
// DialKeepAliveTime is the time after which client pings the server to see if
// transport is alive.
DialKeepAliveTime time.Duration `json:"dial-keep-alive-time"`
// DialKeepAliveTimeout is the time that the client waits for a response for the
// keep-alive probe. If the response is not received in this time, the connection is closed.
DialKeepAliveTimeout time.Duration `json:"dial-keep-alive-timeout"`
// MaxCallSendMsgSize is the client-side request send limit in bytes.
// If 0, it defaults to 2.0 MiB (2 * 1024 * 1024).
// Make sure that "MaxCallSendMsgSize" < server-side default send/recv limit.
// ("--max-request-bytes" flag to etcd or "embed.Config.MaxRequestBytes").
MaxCallSendMsgSize int
// MaxCallRecvMsgSize is the client-side response receive limit.
// If 0, it defaults to "math.MaxInt32", because range response can
// easily exceed request send limits.
// Make sure that "MaxCallRecvMsgSize" >= server-side default send/recv limit.
// ("--max-request-bytes" flag to etcd or "embed.Config.MaxRequestBytes").
MaxCallRecvMsgSize int
// TLS holds the client secure credentials, if any.
TLS *tls.Config
// Username is a user name for authentication.
Username string `json:"username"`
// Password is a password for authentication.
Password string `json:"password"`
// RejectOldCluster when set will refuse to create a client against an outdated cluster.
RejectOldCluster bool `json:"reject-old-cluster"`
// DialOptions is a list of dial options for the grpc client (e.g., for interceptors).
// For example, pass "grpc.WithBlock()" to block until the underlying connection is up.
// Without this, Dial returns immediately and connecting the server happens in background.
DialOptions []grpc.DialOption
// Context is the default client context; it can be used to cancel grpc dial out and
// other operations that do not have an explicit context.
Context context.Context
// LogConfig configures client-side logger.
// If nil, use the default logger.
// TODO: configure gRPC logger
LogConfig *zap.Config
// PermitWithoutStream when set will allow client to send keepalive pings to server without any active streams(RPCs).
PermitWithoutStream bool `json:"permit-without-stream"`
// TODO: support custom balancer picker
}
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