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70b13596e4
This is a 'green' Flogger migration CL. Green CLs are intended to be as safe as possible and should be easy to review and submit. No changes should be necessary to the code itself prior to submission, but small changes to BUILD files may be required. Changes within files are completely independent of each other, so this CL can be safely split up for review using tools such as Rosie. For more information, see [] Base CL: 197826149 ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=198560170
53 lines
1.9 KiB
Java
53 lines
1.9 KiB
Java
// Copyright 2017 The Nomulus Authors. All Rights Reserved.
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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 google.registry.dns;
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import static com.google.common.base.Preconditions.checkState;
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import com.google.common.collect.ImmutableMap;
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import com.google.common.flogger.FluentLogger;
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import google.registry.dns.writer.DnsWriter;
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import google.registry.model.registry.Registry;
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import java.util.Map;
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import javax.inject.Inject;
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/** Proxy for retrieving {@link DnsWriter} implementations. */
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public final class DnsWriterProxy {
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private static final FluentLogger logger = FluentLogger.forEnclosingClass();
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private final ImmutableMap<String, DnsWriter> dnsWriters;
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@Inject
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DnsWriterProxy(Map<String, DnsWriter> dnsWriters) {
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this.dnsWriters = ImmutableMap.copyOf(dnsWriters);
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}
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/**
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* Returns the instance of {@link DnsWriter} by class name.
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*
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* If the DnsWriter doesn't belong to this TLD, will return null.
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*/
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public DnsWriter getByClassNameForTld(String className, String tld) {
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if (!Registry.get(tld).getDnsWriters().contains(className)) {
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logger.atWarning().log(
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"Loaded potentially stale DNS writer %s which is not active on TLD %s.", className, tld);
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return null;
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}
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DnsWriter dnsWriter = dnsWriters.get(className);
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checkState(dnsWriter != null, "Could not load DnsWriter %s for TLD %s", className, tld);
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return dnsWriter;
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}
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}
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