forked from grpc/grpc-java
/
ManagedChannelImplGetNameResolverTest.java
184 lines (156 loc) · 5.8 KB
/
ManagedChannelImplGetNameResolverTest.java
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/*
* Copyright 2015 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.internal;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.fail;
import static org.mockito.Mockito.mock;
import io.grpc.ChannelLogger;
import io.grpc.NameResolver;
import io.grpc.NameResolver.Factory;
import io.grpc.NameResolver.ServiceConfigParser;
import io.grpc.ProxyDetector;
import io.grpc.SynchronizationContext;
import java.lang.Thread.UncaughtExceptionHandler;
import java.net.URI;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** Unit tests for {@link ManagedChannelImpl#getNameResolver}. */
@RunWith(JUnit4.class)
public class ManagedChannelImplGetNameResolverTest {
private static final NameResolver.Args NAMERESOLVER_ARGS = NameResolver.Args.newBuilder()
.setDefaultPort(447)
.setProxyDetector(mock(ProxyDetector.class))
.setSynchronizationContext(new SynchronizationContext(mock(UncaughtExceptionHandler.class)))
.setServiceConfigParser(mock(ServiceConfigParser.class))
.setChannelLogger(mock(ChannelLogger.class))
.build();
@Test
public void invalidUriTarget() {
testInvalidTarget("defaultscheme:///[invalid]");
}
@Test
public void validTargetWithInvalidDnsName() throws Exception {
testValidTarget("[valid]", "defaultscheme:///%5Bvalid%5D",
new URI("defaultscheme", "", "/[valid]", null));
}
@Test
public void validAuthorityTarget() throws Exception {
testValidTarget("foo.googleapis.com:8080", "defaultscheme:///foo.googleapis.com:8080",
new URI("defaultscheme", "", "/foo.googleapis.com:8080", null));
}
@Test
public void validUriTarget() throws Exception {
testValidTarget("scheme:///foo.googleapis.com:8080", "scheme:///foo.googleapis.com:8080",
new URI("scheme", "", "/foo.googleapis.com:8080", null));
}
@Test
public void validIpv4AuthorityTarget() throws Exception {
testValidTarget("127.0.0.1:1234", "defaultscheme:///127.0.0.1:1234",
new URI("defaultscheme", "", "/127.0.0.1:1234", null));
}
@Test
public void validIpv4UriTarget() throws Exception {
testValidTarget("dns:///127.0.0.1:1234", "dns:///127.0.0.1:1234",
new URI("dns", "", "/127.0.0.1:1234", null));
}
@Test
public void validIpv6AuthorityTarget() throws Exception {
testValidTarget("[::1]:1234", "defaultscheme:///%5B::1%5D:1234",
new URI("defaultscheme", "", "/[::1]:1234", null));
}
@Test
public void invalidIpv6UriTarget() throws Exception {
testInvalidTarget("dns:///[::1]:1234");
}
@Test
public void validIpv6UriTarget() throws Exception {
testValidTarget("dns:///%5B::1%5D:1234", "dns:///%5B::1%5D:1234",
new URI("dns", "", "/[::1]:1234", null));
}
@Test
public void validTargetStartingWithSlash() throws Exception {
testValidTarget("/target", "defaultscheme:////target",
new URI("defaultscheme", "", "//target", null));
}
@Test
public void validTargetNoResovler() {
Factory nameResolverFactory = new NameResolver.Factory() {
@Override
public NameResolver newNameResolver(URI targetUri, NameResolver.Args args) {
return null;
}
@Override
public String getDefaultScheme() {
return "defaultscheme";
}
};
try {
ManagedChannelImpl.getNameResolver(
"foo.googleapis.com:8080", nameResolverFactory, NAMERESOLVER_ARGS);
fail("Should fail");
} catch (IllegalArgumentException e) {
// expected
}
}
private void testValidTarget(String target, String expectedUriString, URI expectedUri) {
Factory nameResolverFactory = new FakeNameResolverFactory(expectedUri.getScheme());
FakeNameResolver nameResolver = (FakeNameResolver) ManagedChannelImpl.getNameResolver(
target, nameResolverFactory, NAMERESOLVER_ARGS);
assertNotNull(nameResolver);
assertEquals(expectedUri, nameResolver.uri);
assertEquals(expectedUriString, nameResolver.uri.toString());
}
private void testInvalidTarget(String target) {
Factory nameResolverFactory = new FakeNameResolverFactory("dns");
try {
FakeNameResolver nameResolver = (FakeNameResolver) ManagedChannelImpl.getNameResolver(
target, nameResolverFactory, NAMERESOLVER_ARGS);
fail("Should have failed, but got resolver with " + nameResolver.uri);
} catch (IllegalArgumentException e) {
// expected
}
}
private static class FakeNameResolverFactory extends NameResolver.Factory {
final String expectedScheme;
FakeNameResolverFactory(String expectedScheme) {
this.expectedScheme = expectedScheme;
}
@Override
public NameResolver newNameResolver(URI targetUri, NameResolver.Args args) {
if (expectedScheme.equals(targetUri.getScheme())) {
return new FakeNameResolver(targetUri);
}
return null;
}
@Override
public String getDefaultScheme() {
return expectedScheme;
}
}
private static class FakeNameResolver extends NameResolver {
final URI uri;
FakeNameResolver(URI uri) {
this.uri = uri;
}
@Override public String getServiceAuthority() {
return uri.getAuthority();
}
@Override public void start(final Listener2 listener) {}
@Override public void shutdown() {}
}
}