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| 1 | +/* |
| 2 | + * Copyright 2015 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.internal; |
| 18 | + |
| 19 | +import static com.google.common.truth.Truth.assertThat; |
| 20 | +import static io.grpc.internal.UriWrapper.wrap; |
| 21 | +import static org.junit.Assert.fail; |
| 22 | + |
| 23 | +import io.grpc.NameResolver; |
| 24 | +import io.grpc.NameResolverProvider; |
| 25 | +import io.grpc.NameResolverRegistry; |
| 26 | +import io.grpc.Uri; |
| 27 | +import java.net.SocketAddress; |
| 28 | +import java.net.URI; |
| 29 | +import java.util.Collections; |
| 30 | +import org.junit.Test; |
| 31 | +import org.junit.runner.RunWith; |
| 32 | +import org.junit.runners.JUnit4; |
| 33 | + |
| 34 | +/** Unit tests for ManagedChannelImplBuilder#getNameResolverProviderNew(). */ |
| 35 | +@RunWith(JUnit4.class) |
| 36 | +public class ManagedChannelImplGetNameResolverNewTest { |
| 37 | + @Test |
| 38 | + public void invalidUriTarget() { |
| 39 | + testInvalidTarget("defaultscheme:///[invalid]"); |
| 40 | + } |
| 41 | + |
| 42 | + @Test |
| 43 | + public void validTargetWithInvalidDnsName() throws Exception { |
| 44 | + testValidTarget( |
| 45 | + "[valid]", |
| 46 | + "defaultscheme:///%5Bvalid%5D", |
| 47 | + Uri.newBuilder().setScheme("defaultscheme").setHost("").setPath("/[valid]").build()); |
| 48 | + } |
| 49 | + |
| 50 | + @Test |
| 51 | + public void validAuthorityTarget() throws Exception { |
| 52 | + testValidTarget( |
| 53 | + "foo.googleapis.com:8080", |
| 54 | + "defaultscheme:///foo.googleapis.com:8080", |
| 55 | + Uri.newBuilder() |
| 56 | + .setScheme("defaultscheme") |
| 57 | + .setHost("") |
| 58 | + .setPath("/foo.googleapis.com:8080") |
| 59 | + .build()); |
| 60 | + } |
| 61 | + |
| 62 | + @Test |
| 63 | + public void validUriTarget() throws Exception { |
| 64 | + testValidTarget( |
| 65 | + "scheme:///foo.googleapis.com:8080", |
| 66 | + "scheme:///foo.googleapis.com:8080", |
| 67 | + Uri.newBuilder() |
| 68 | + .setScheme("scheme") |
| 69 | + .setHost("") |
| 70 | + .setPath("/foo.googleapis.com:8080") |
| 71 | + .build()); |
| 72 | + } |
| 73 | + |
| 74 | + @Test |
| 75 | + public void validIpv4AuthorityTarget() throws Exception { |
| 76 | + testValidTarget( |
| 77 | + "127.0.0.1:1234", |
| 78 | + "defaultscheme:///127.0.0.1:1234", |
| 79 | + Uri.newBuilder().setScheme("defaultscheme").setHost("").setPath("/127.0.0.1:1234").build()); |
| 80 | + } |
| 81 | + |
| 82 | + @Test |
| 83 | + public void validIpv4UriTarget() throws Exception { |
| 84 | + testValidTarget( |
| 85 | + "dns:///127.0.0.1:1234", |
| 86 | + "dns:///127.0.0.1:1234", |
| 87 | + Uri.newBuilder().setScheme("dns").setHost("").setPath("/127.0.0.1:1234").build()); |
| 88 | + } |
| 89 | + |
| 90 | + @Test |
| 91 | + public void validIpv6AuthorityTarget() throws Exception { |
| 92 | + testValidTarget( |
| 93 | + "[::1]:1234", |
| 94 | + "defaultscheme:///%5B::1%5D:1234", |
| 95 | + Uri.newBuilder().setScheme("defaultscheme").setHost("").setPath("/[::1]:1234").build()); |
| 96 | + } |
| 97 | + |
| 98 | + @Test |
| 99 | + public void invalidIpv6UriTarget() throws Exception { |
| 100 | + testInvalidTarget("dns:///[::1]:1234"); |
| 101 | + } |
| 102 | + |
| 103 | + @Test |
| 104 | + public void validIpv6UriTarget() throws Exception { |
| 105 | + testValidTarget( |
| 106 | + "dns:///%5B::1%5D:1234", |
| 107 | + "dns:///%5B::1%5D:1234", |
| 108 | + Uri.newBuilder().setScheme("dns").setHost("").setPath("/[::1]:1234").build()); |
| 109 | + } |
| 110 | + |
| 111 | + @Test |
| 112 | + public void validTargetStartingWithSlash() throws Exception { |
| 113 | + testValidTarget( |
| 114 | + "/target", |
| 115 | + "defaultscheme:////target", |
| 116 | + Uri.newBuilder().setScheme("defaultscheme").setHost("").setPath("//target").build()); |
| 117 | + } |
| 118 | + |
| 119 | + @Test |
| 120 | + public void validTargetNoProvider() { |
| 121 | + NameResolverRegistry nameResolverRegistry = new NameResolverRegistry(); |
| 122 | + try { |
| 123 | + ManagedChannelImplBuilder.getNameResolverProviderNew( |
| 124 | + "foo.googleapis.com:8080", nameResolverRegistry); |
| 125 | + fail("Should fail"); |
| 126 | + } catch (IllegalArgumentException e) { |
| 127 | + // expected |
| 128 | + } |
| 129 | + } |
| 130 | + |
| 131 | + @Test |
| 132 | + public void validTargetProviderAddrTypesNotSupported() { |
| 133 | + NameResolverRegistry nameResolverRegistry = getTestRegistry("testscheme"); |
| 134 | + try { |
| 135 | + ManagedChannelImplBuilder.getNameResolverProviderNew( |
| 136 | + "testscheme:///foo.googleapis.com:8080", nameResolverRegistry) |
| 137 | + .checkAddressTypes(Collections.singleton(CustomSocketAddress.class)); |
| 138 | + fail("Should fail"); |
| 139 | + } catch (IllegalArgumentException e) { |
| 140 | + assertThat(e).hasMessageThat().isEqualTo( |
| 141 | + "Address types of NameResolver 'testscheme' for " |
| 142 | + + "'testscheme:///foo.googleapis.com:8080' not supported by transport"); |
| 143 | + } |
| 144 | + } |
| 145 | + |
| 146 | + private void testValidTarget(String target, String expectedUriString, Uri expectedUri) { |
| 147 | + NameResolverRegistry nameResolverRegistry = getTestRegistry(expectedUri.getScheme()); |
| 148 | + ManagedChannelImplBuilder.ResolvedNameResolver resolved = |
| 149 | + ManagedChannelImplBuilder.getNameResolverProviderNew(target, nameResolverRegistry); |
| 150 | + assertThat(resolved.provider).isInstanceOf(FakeNameResolverProvider.class); |
| 151 | + assertThat(resolved.targetUri).isEqualTo(wrap(expectedUri)); |
| 152 | + assertThat(resolved.targetUri.toString()).isEqualTo(expectedUriString); |
| 153 | + } |
| 154 | + |
| 155 | + private void testInvalidTarget(String target) { |
| 156 | + NameResolverRegistry nameResolverRegistry = getTestRegistry("dns"); |
| 157 | + |
| 158 | + try { |
| 159 | + ManagedChannelImplBuilder.ResolvedNameResolver resolved = |
| 160 | + ManagedChannelImplBuilder.getNameResolverProviderNew(target, nameResolverRegistry); |
| 161 | + FakeNameResolverProvider nameResolverProvider = (FakeNameResolverProvider) resolved.provider; |
| 162 | + fail("Should have failed, but got resolver provider " + nameResolverProvider); |
| 163 | + } catch (IllegalArgumentException e) { |
| 164 | + // expected |
| 165 | + } |
| 166 | + } |
| 167 | + |
| 168 | + |
| 169 | + |
| 170 | + private static NameResolverRegistry getTestRegistry(String expectedScheme) { |
| 171 | + NameResolverRegistry nameResolverRegistry = new NameResolverRegistry(); |
| 172 | + FakeNameResolverProvider nameResolverProvider = new FakeNameResolverProvider(expectedScheme); |
| 173 | + nameResolverRegistry.register(nameResolverProvider); |
| 174 | + return nameResolverRegistry; |
| 175 | + } |
| 176 | + |
| 177 | + private static class FakeNameResolverProvider extends NameResolverProvider { |
| 178 | + final String expectedScheme; |
| 179 | + |
| 180 | + FakeNameResolverProvider(String expectedScheme) { |
| 181 | + this.expectedScheme = expectedScheme; |
| 182 | + } |
| 183 | + |
| 184 | + @Override |
| 185 | + public NameResolver newNameResolver(URI targetUri, NameResolver.Args args) { |
| 186 | + if (expectedScheme.equals(targetUri.getScheme())) { |
| 187 | + return new FakeNameResolver(targetUri); |
| 188 | + } |
| 189 | + return null; |
| 190 | + } |
| 191 | + |
| 192 | + @Override |
| 193 | + public String getDefaultScheme() { |
| 194 | + return expectedScheme; |
| 195 | + } |
| 196 | + |
| 197 | + @Override |
| 198 | + protected boolean isAvailable() { |
| 199 | + return true; |
| 200 | + } |
| 201 | + |
| 202 | + @Override |
| 203 | + protected int priority() { |
| 204 | + return 5; |
| 205 | + } |
| 206 | + } |
| 207 | + |
| 208 | + private static class FakeNameResolver extends NameResolver { |
| 209 | + final URI uri; |
| 210 | + |
| 211 | + FakeNameResolver(URI uri) { |
| 212 | + this.uri = uri; |
| 213 | + } |
| 214 | + |
| 215 | + @Override public String getServiceAuthority() { |
| 216 | + return uri.getAuthority(); |
| 217 | + } |
| 218 | + |
| 219 | + @Override public void start(final Listener2 listener) {} |
| 220 | + |
| 221 | + @Override public void shutdown() {} |
| 222 | + } |
| 223 | + |
| 224 | + private static class CustomSocketAddress extends SocketAddress {} |
| 225 | +} |
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