mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-12-23 13:30:23 +00:00
70 lines
2.8 KiB
Go
70 lines
2.8 KiB
Go
|
// Copyright 2017 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 (
|
||
|
|
"math"
|
||
|
|
"time"
|
||
|
|
|
||
|
|
"google.golang.org/grpc"
|
||
|
|
)
|
||
|
|
|
||
|
|
var (
|
||
|
|
// client-side handling retrying of request failures where data was not written to the wire or
|
||
|
|
// where server indicates it did not process the data. gRPC default is default is "WaitForReady(false)"
|
||
|
|
// but for etcd we default to "WaitForReady(true)" to minimize client request error responses due to
|
||
|
|
// transient failures.
|
||
|
|
defaultWaitForReady = grpc.WaitForReady(true)
|
||
|
|
|
||
|
|
// client-side request send limit, gRPC default is math.MaxInt32
|
||
|
|
// Make sure that "client-side send limit < server-side default send/recv limit"
|
||
|
|
// Same value as "embed.DefaultMaxRequestBytes" plus gRPC overhead bytes
|
||
|
|
defaultMaxCallSendMsgSize = grpc.MaxCallSendMsgSize(2 * 1024 * 1024)
|
||
|
|
|
||
|
|
// client-side response receive limit, gRPC default is 4MB
|
||
|
|
// Make sure that "client-side receive limit >= server-side default send/recv limit"
|
||
|
|
// because range response can easily exceed request send limits
|
||
|
|
// Default to math.MaxInt32; writes exceeding server-side send limit fails anyway
|
||
|
|
defaultMaxCallRecvMsgSize = grpc.MaxCallRecvMsgSize(math.MaxInt32)
|
||
|
|
|
||
|
|
// client-side non-streaming retry limit, only applied to requests where server responds with
|
||
|
|
// a error code clearly indicating it was unable to process the request such as codes.Unavailable.
|
||
|
|
// If set to 0, retry is disabled.
|
||
|
|
defaultUnaryMaxRetries uint = 100
|
||
|
|
|
||
|
|
// client-side streaming retry limit, only applied to requests where server responds with
|
||
|
|
// a error code clearly indicating it was unable to process the request such as codes.Unavailable.
|
||
|
|
// If set to 0, retry is disabled.
|
||
|
|
defaultStreamMaxRetries = ^uint(0) // max uint
|
||
|
|
|
||
|
|
// client-side retry backoff wait between requests.
|
||
|
|
defaultBackoffWaitBetween = 25 * time.Millisecond
|
||
|
|
|
||
|
|
// client-side retry backoff default jitter fraction.
|
||
|
|
defaultBackoffJitterFraction = 0.10
|
||
|
|
)
|
||
|
|
|
||
|
|
// defaultCallOpts defines a list of default "gRPC.CallOption".
|
||
|
|
// Some options are exposed to "clientv3.Config".
|
||
|
|
// Defaults will be overridden by the settings in "clientv3.Config".
|
||
|
|
var defaultCallOpts = []grpc.CallOption{
|
||
|
|
defaultWaitForReady,
|
||
|
|
defaultMaxCallSendMsgSize,
|
||
|
|
defaultMaxCallRecvMsgSize,
|
||
|
|
}
|
||
|
|
|
||
|
|
// MaxLeaseTTL is the maximum lease TTL value
|
||
|
|
const MaxLeaseTTL = 9000000000
|