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XdsNameResolverProviderTest.java
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XdsNameResolverProviderTest.java
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/*
* Copyright 2019 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.xds;
import static com.google.common.truth.Truth.assertThat;
import static org.junit.Assert.fail;
import static org.mockito.Mockito.mock;
import com.google.common.collect.ImmutableMap;
import io.grpc.ChannelLogger;
import io.grpc.InternalServiceProviders;
import io.grpc.NameResolver;
import io.grpc.NameResolver.ServiceConfigParser;
import io.grpc.NameResolverProvider;
import io.grpc.NameResolverRegistry;
import io.grpc.SynchronizationContext;
import io.grpc.internal.FakeClock;
import io.grpc.internal.GrpcUtil;
import java.net.URI;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** Unit tests for {@link XdsNameResolverProvider}. */
@RunWith(JUnit4.class)
public class XdsNameResolverProviderTest {
private final SynchronizationContext syncContext = new SynchronizationContext(
new Thread.UncaughtExceptionHandler() {
@Override
public void uncaughtException(Thread t, Throwable e) {
throw new AssertionError(e);
}
});
private final FakeClock fakeClock = new FakeClock();
private final NameResolver.Args args = NameResolver.Args.newBuilder()
.setDefaultPort(8080)
.setProxyDetector(GrpcUtil.NOOP_PROXY_DETECTOR)
.setSynchronizationContext(syncContext)
.setServiceConfigParser(mock(ServiceConfigParser.class))
.setScheduledExecutorService(fakeClock.getScheduledExecutorService())
.setChannelLogger(mock(ChannelLogger.class))
.build();
private XdsNameResolverProvider provider = new XdsNameResolverProvider();
@Test
public void provided() {
for (NameResolverProvider current
: InternalServiceProviders.getCandidatesViaServiceLoader(
NameResolverProvider.class, getClass().getClassLoader())) {
if (current instanceof XdsNameResolverProvider) {
return;
}
}
fail("XdsNameResolverProvider not registered");
}
@Test
public void isAvailable() {
assertThat(provider.isAvailable()).isTrue();
}
@Test
public void newNameResolver() {
assertThat(
provider.newNameResolver(URI.create("xds://1.1.1.1/foo.googleapis.com"), args))
.isInstanceOf(XdsNameResolver.class);
assertThat(
provider.newNameResolver(URI.create("xds:///foo.googleapis.com"), args))
.isInstanceOf(XdsNameResolver.class);
assertThat(
provider.newNameResolver(URI.create("notxds://1.1.1.1/foo.googleapis.com"),
args))
.isNull();
}
@Test
public void validName_withAuthority() {
XdsNameResolver resolver =
provider.newNameResolver(
URI.create("xds://trafficdirector.google.com/foo.googleapis.com"), args);
assertThat(resolver).isNotNull();
assertThat(resolver.getServiceAuthority()).isEqualTo("foo.googleapis.com");
}
@Test
public void validName_noAuthority() {
XdsNameResolver resolver =
provider.newNameResolver(URI.create("xds:///foo.googleapis.com"), args);
assertThat(resolver).isNotNull();
assertThat(resolver.getServiceAuthority()).isEqualTo("foo.googleapis.com");
}
@Test
public void invalidName_hostnameContainsUnderscore() {
URI uri = URI.create("xds:///foo_bar.googleapis.com");
try {
provider.newNameResolver(uri, args);
fail("Expected IllegalArgumentException");
} catch (IllegalArgumentException e) {
// Expected
}
}
@Test
public void newProvider_multipleScheme() {
NameResolverRegistry registry = NameResolverRegistry.getDefaultRegistry();
XdsNameResolverProvider provider0 = XdsNameResolverProvider.createForTest("no-scheme", null);
registry.register(provider0);
XdsNameResolverProvider provider1 = XdsNameResolverProvider.createForTest("new-xds-scheme",
new HashMap<String, String>());
registry.register(provider1);
assertThat(registry.asFactory()
.newNameResolver(URI.create("xds:///localhost"), args)).isNotNull();
assertThat(registry.asFactory()
.newNameResolver(URI.create("new-xds-scheme:///localhost"), args)).isNotNull();
assertThat(registry.asFactory()
.newNameResolver(URI.create("no-scheme:///localhost"), args)).isNotNull();
registry.deregister(provider1);
assertThat(registry.asFactory()
.newNameResolver(URI.create("new-xds-scheme:///localhost"), args)).isNull();
registry.deregister(provider0);
assertThat(registry.asFactory()
.newNameResolver(URI.create("xds:///localhost"), args)).isNotNull();
}
@Test
public void newProvider_overrideBootstrap() {
Map<String, ?> b = ImmutableMap.of(
"node", ImmutableMap.of(
"id", "ENVOY_NODE_ID",
"cluster", "ENVOY_CLUSTER"),
"xds_servers", Collections.singletonList(
ImmutableMap.of(
"server_uri", "trafficdirector.googleapis.com:443",
"channel_creds", Collections.singletonList(
ImmutableMap.of("type", "insecure")
)
)
)
);
NameResolverRegistry registry = new NameResolverRegistry();
XdsNameResolverProvider provider = XdsNameResolverProvider.createForTest("no-scheme", b);
registry.register(provider);
NameResolver resolver = registry.asFactory()
.newNameResolver(URI.create("no-scheme:///localhost"), args);
resolver.start(mock(NameResolver.Listener2.class));
assertThat(resolver).isInstanceOf(XdsNameResolver.class);
assertThat(((XdsNameResolver)resolver).getXdsClient().getBootstrapInfo().getNode().getId())
.isEqualTo("ENVOY_NODE_ID");
resolver.shutdown();
registry.deregister(provider);
}
}