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https://github.com/minio/minio.git
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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.
73 lines
2.1 KiB
Go
73 lines
2.1 KiB
Go
/*
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*
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* Copyright 2017 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 connectivity defines connectivity semantics.
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// For details, see https://github.com/grpc/grpc/blob/master/doc/connectivity-semantics-and-api.md.
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// All APIs in this package are experimental.
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package connectivity
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import (
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"golang.org/x/net/context"
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"google.golang.org/grpc/grpclog"
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)
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// State indicates the state of connectivity.
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// It can be the state of a ClientConn or SubConn.
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type State int
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func (s State) String() string {
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switch s {
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case Idle:
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return "IDLE"
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case Connecting:
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return "CONNECTING"
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case Ready:
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return "READY"
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case TransientFailure:
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return "TRANSIENT_FAILURE"
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case Shutdown:
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return "SHUTDOWN"
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default:
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grpclog.Errorf("unknown connectivity state: %d", s)
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return "Invalid-State"
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}
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}
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const (
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// Idle indicates the ClientConn is idle.
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Idle State = iota
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// Connecting indicates the ClienConn is connecting.
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Connecting
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// Ready indicates the ClientConn is ready for work.
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Ready
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// TransientFailure indicates the ClientConn has seen a failure but expects to recover.
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TransientFailure
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// Shutdown indicates the ClientConn has started shutting down.
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Shutdown
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)
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// Reporter reports the connectivity states.
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type Reporter interface {
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// CurrentState returns the current state of the reporter.
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CurrentState() State
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// WaitForStateChange blocks until the reporter's state is different from the given state,
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// and returns true.
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// It returns false if <-ctx.Done() can proceed (ctx got timeout or got canceled).
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WaitForStateChange(context.Context, State) bool
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}
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