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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.
52 lines
2.0 KiB
Go
52 lines
2.0 KiB
Go
/*
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*
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* Copyright 2016 gRPC 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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*
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*/
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// Package tap defines the function handles which are executed on the transport
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// layer of gRPC-Go and related information. Everything here is EXPERIMENTAL.
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package tap
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import (
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"golang.org/x/net/context"
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)
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// Info defines the relevant information needed by the handles.
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type Info struct {
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// FullMethodName is the string of grpc method (in the format of
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// /package.service/method).
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FullMethodName string
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// TODO: More to be added.
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}
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// ServerInHandle defines the function which runs before a new stream is created
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// on the server side. If it returns a non-nil error, the stream will not be
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// created and a RST_STREAM will be sent back to the client with REFUSED_STREAM.
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// The client will receive an RPC error "code = Unavailable, desc = stream
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// terminated by RST_STREAM with error code: REFUSED_STREAM".
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//
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// It's intended to be used in situations where you don't want to waste the
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// resources to accept the new stream (e.g. rate-limiting). And the content of
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// the error will be ignored and won't be sent back to the client. For other
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// general usages, please use interceptors.
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//
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// Note that it is executed in the per-connection I/O goroutine(s) instead of
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// per-RPC goroutine. Therefore, users should NOT have any
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// blocking/time-consuming work in this handle. Otherwise all the RPCs would
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// slow down. Also, for the same reason, this handle won't be called
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// concurrently by gRPC.
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type ServerInHandle func(ctx context.Context, info *Info) (context.Context, error)
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