#18908

Committed 20 Nov 2023 09:54PM CUT coverage: 88.231% (-0.02%) from 88.249%

Build # #18908

Build Type

push

github

Committed by

ejona86

Commit Message

netty: Add option to limit RST_STREAM rate

The behavior purposefully mirrors that of Netty's
AbstractHttp2ConnectionHandlerBuilder.decoderEnforceMaxRstFramesPerWindow().
That API is not available to our code as we extend the
Http2ConnectionHandler, but we want our API to be able to delegate to
Netty's in the future if that ever becomes possible.

Run Details

30311 of 34354 relevant lines covered (88.23%)

0.88 hits per line

Source File
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88.89

/../netty/src/main/java/io/grpc/netty/UdsNameResolver.java

/*
 * Copyright 2022 The gRPC Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.grpc.netty;

import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;

import com.google.common.base.Preconditions;
import io.grpc.EquivalentAddressGroup;
import io.grpc.NameResolver;
import io.netty.channel.unix.DomainSocketAddress;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

final class UdsNameResolver extends NameResolver {
  private NameResolver.Listener2 listener;
  private final String authority;

  UdsNameResolver(String authority, String targetPath) {
    checkArgument(authority == null, "non-null authority not supported");
    this.authority = targetPath;
  }

  @Override
  public String getServiceAuthority() {
    return this.authority;
  }

  @Override
  public void start(Listener2 listener) {
    Preconditions.checkState(this.listener == null, "already started");
    this.listener = checkNotNull(listener, "listener");
    resolve();
  }

  @Override
  public void refresh() {
    resolve();
  }

  private void resolve() {
    ResolutionResult.Builder resolutionResultBuilder = ResolutionResult.newBuilder();
    List<EquivalentAddressGroup> servers = new ArrayList<>(1);
    servers.add(new EquivalentAddressGroup(new DomainSocketAddress(authority)));
    resolutionResultBuilder.setAddresses(Collections.unmodifiableList(servers));
    listener.onResult(resolutionResultBuilder.build());
  }

  @Override
  public void shutdown() {}
}

1	/*
2	* Copyright 2022 The gRPC Authors
3	*
4	* Licensed under the Apache License, Version 2.0 (the "License");
5	* you may not use this file except in compliance with the License.
6	* You may obtain a copy of the License at
7	*
8	* http://www.apache.org/licenses/LICENSE-2.0
9	*
10	* Unless required by applicable law or agreed to in writing, software
11	* distributed under the License is distributed on an "AS IS" BASIS,
12	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13	* See the License for the specific language governing permissions and
14	* limitations under the License.
15	*/
16
17	package io.grpc.netty;
18
19	import static com.google.common.base.Preconditions.checkArgument;
20	import static com.google.common.base.Preconditions.checkNotNull;
21
22	import com.google.common.base.Preconditions;
23	import io.grpc.EquivalentAddressGroup;
24	import io.grpc.NameResolver;
25	import io.netty.channel.unix.DomainSocketAddress;
26	import java.util.ArrayList;
27	import java.util.Collections;
28	import java.util.List;
29
30	final class UdsNameResolver extends NameResolver {
31	private NameResolver.Listener2 listener;
32	private final String authority;
33
34	UdsNameResolver(String authority, String targetPath) {	1✔
35	checkArgument(authority == null, "non-null authority not supported");	1✔
36	this.authority = targetPath;	1✔
37	}	1✔
38
39	@Override
40	public String getServiceAuthority() {
41	return this.authority;	1✔
42	}
43
44	@Override
45	public void start(Listener2 listener) {
46	Preconditions.checkState(this.listener == null, "already started");	1✔
47	this.listener = checkNotNull(listener, "listener");	1✔
48	resolve();	1✔
49	}	1✔
50
51	@Override
52	public void refresh() {
53	resolve();	×
54	}	×
55
56	private void resolve() {
57	ResolutionResult.Builder resolutionResultBuilder = ResolutionResult.newBuilder();	1✔
58	List<EquivalentAddressGroup> servers = new ArrayList<>(1);	1✔
59	servers.add(new EquivalentAddressGroup(new DomainSocketAddress(authority)));	1✔
60	resolutionResultBuilder.setAddresses(Collections.unmodifiableList(servers));	1✔
61	listener.onResult(resolutionResultBuilder.build());	1✔
62	}	1✔
63
64	@Override
65	public void shutdown() {}	1✔
66	}

grpc / grpc-java / #18908

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