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69 lines
2.2 KiB
Go
69 lines
2.2 KiB
Go
/*
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*
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* Copyright 2014 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 naming defines the naming API and related data structures for gRPC.
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// The interface is EXPERIMENTAL and may be subject to change.
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//
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// Deprecated: please use package resolver.
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package naming
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// Operation defines the corresponding operations for a name resolution change.
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//
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// Deprecated: please use package resolver.
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type Operation uint8
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const (
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// Add indicates a new address is added.
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Add Operation = iota
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// Delete indicates an existing address is deleted.
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Delete
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)
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// Update defines a name resolution update. Notice that it is not valid having both
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// empty string Addr and nil Metadata in an Update.
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//
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// Deprecated: please use package resolver.
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type Update struct {
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// Op indicates the operation of the update.
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Op Operation
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// Addr is the updated address. It is empty string if there is no address update.
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Addr string
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// Metadata is the updated metadata. It is nil if there is no metadata update.
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// Metadata is not required for a custom naming implementation.
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Metadata interface{}
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}
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// Resolver creates a Watcher for a target to track its resolution changes.
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//
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// Deprecated: please use package resolver.
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type Resolver interface {
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// Resolve creates a Watcher for target.
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Resolve(target string) (Watcher, error)
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}
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// Watcher watches for the updates on the specified target.
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//
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// Deprecated: please use package resolver.
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type Watcher interface {
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// Next blocks until an update or error happens. It may return one or more
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// updates. The first call should get the full set of the results. It should
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// return an error if and only if Watcher cannot recover.
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Next() ([]*Update, error)
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// Close closes the Watcher.
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Close()
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}
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