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61 lines
2.1 KiB
Go
61 lines
2.1 KiB
Go
/*
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*
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* Copyright 2018 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 dns implements a dns resolver to be installed as the default resolver
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// in grpc.
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package dns
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import (
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"time"
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"google.golang.org/grpc/internal/resolver/dns"
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"google.golang.org/grpc/resolver"
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)
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// SetResolvingTimeout sets the maximum duration for DNS resolution requests.
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//
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// This function affects the global timeout used by all channels using the DNS
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// name resolver scheme.
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//
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// It must be called only at application startup, before any gRPC calls are
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// made. Modifying this value after initialization is not thread-safe.
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//
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// The default value is 30 seconds. Setting the timeout too low may result in
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// premature timeouts during resolution, while setting it too high may lead to
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// unnecessary delays in service discovery. Choose a value appropriate for your
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// specific needs and network environment.
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func SetResolvingTimeout(timeout time.Duration) {
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dns.ResolvingTimeout = timeout
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}
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// NewBuilder creates a dnsBuilder which is used to factory DNS resolvers.
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//
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// Deprecated: import grpc and use resolver.Get("dns") instead.
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func NewBuilder() resolver.Builder {
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return dns.NewBuilder()
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}
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// SetMinResolutionInterval sets the default minimum interval at which DNS
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// re-resolutions are allowed. This helps to prevent excessive re-resolution.
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//
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// It must be called only at application startup, before any gRPC calls are
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// made. Modifying this value after initialization is not thread-safe.
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func SetMinResolutionInterval(d time.Duration) {
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dns.MinResolutionInterval = d
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}
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