2aa18cafc6
With CoreDNS now supporting etcdv3 as the DNS backend, we can update our federation target to etcdv3. Users will now be able to use etcdv3 server as the federation backbone. Minio will update bucket data to etcdv3 and CoreDNS can pick that data up and serve it as bucket style DNS path.
65 lines
2.7 KiB
Go
65 lines
2.7 KiB
Go
// Copyright 2017 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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"math"
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"time"
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"google.golang.org/grpc"
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)
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var (
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// client-side handling retrying of request failures where data was not written to the wire or
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// where server indicates it did not process the data. gRPC default is default is "FailFast(true)"
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// but for etcd we default to "FailFast(false)" to minimize client request error responses due to
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// transient failures.
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defaultFailFast = grpc.FailFast(false)
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// client-side request send limit, gRPC default is math.MaxInt32
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// Make sure that "client-side send limit < server-side default send/recv limit"
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// Same value as "embed.DefaultMaxRequestBytes" plus gRPC overhead bytes
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defaultMaxCallSendMsgSize = grpc.MaxCallSendMsgSize(2 * 1024 * 1024)
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// client-side response receive limit, gRPC default is 4MB
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// Make sure that "client-side receive limit >= server-side default send/recv limit"
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// because range response can easily exceed request send limits
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// Default to math.MaxInt32; writes exceeding server-side send limit fails anyway
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defaultMaxCallRecvMsgSize = grpc.MaxCallRecvMsgSize(math.MaxInt32)
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// client-side non-streaming retry limit, only applied to requests where server responds with
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// a error code clearly indicating it was unable to process the request such as codes.Unavailable.
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// If set to 0, retry is disabled.
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defaultUnaryMaxRetries uint = 100
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// client-side streaming retry limit, only applied to requests where server responds with
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// a error code clearly indicating it was unable to process the request such as codes.Unavailable.
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// If set to 0, retry is disabled.
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defaultStreamMaxRetries uint = ^uint(0) // max uint
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// client-side retry backoff wait between requests.
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defaultBackoffWaitBetween = 25 * time.Millisecond
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// client-side retry backoff default jitter fraction.
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defaultBackoffJitterFraction = 0.10
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)
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// defaultCallOpts defines a list of default "gRPC.CallOption".
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// Some options are exposed to "clientv3.Config".
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// Defaults will be overridden by the settings in "clientv3.Config".
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var defaultCallOpts = []grpc.CallOption{defaultFailFast, defaultMaxCallSendMsgSize, defaultMaxCallRecvMsgSize}
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// MaxLeaseTTL is the maximum lease TTL value
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const MaxLeaseTTL = 9000000000
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