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common.go
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common.go
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// Licensed to the Apache Software Foundation (ASF) under one or more
// contributor license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright ownership.
// The ASF licenses this file to You 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 etcd
import (
"math"
"time"
)
const (
// here will new an etcd connection after about 30s(=5s * 3 + (backoff:8s))
// when the connected etcd member was hung but tcp is still alive
healthCheckTimeout = 5 * time.Second
healthCheckRetryTimes = 3
// see google.golang.org/grpc/keepalive/keepalive.go
// after a duration of this time if the client doesn't see any activity
// it pings the server to see if the transport is still alive.
keepAliveTime = 2 * time.Second
keepAliveTimeout = 5 * time.Second
// see go.etcd.io/etcd/clientv3/options.go
maxSendMsgSize = 10 * 1024 * 1024 // 10MB
maxRecvMsgSize = math.MaxInt32
)
const (
OperationCompact = "COMPACT"
OperationTxn = "TXN"
OperationLeaseGrant = "LEASE_GRANT"
OperationLeaseRenew = "LEASE_RENEW"
OperationLeaseRevoke = "LEASE_REVOKE"
OperationSyncMembers = "SYNC"
)