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xds: fix xdsClient resource not exist for invalid resource, fix xdsServerWrapper start on resource not exist (#8660) 

Fix bugs:
1. Invalid resource at xdsClient, the watcher should have been delivered an error instead of resource not found.
2. If the resource is properly determined to not exist, it shouldn't cause start() to fail. From A36 xDS for Servers:
"XdsServer's start must not fail due to transient xDS issues, like missing xDS configuration from the xDS server."
This commit is contained in:
yifeizhuang 2021-11-08 15:21:59 -08:00 committed by GitHub
parent ab7f867a4a
commit 0b0079c8a1
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GPG Key ID: 4AEE18F83AFDEB23
5 changed files with 64 additions and 38 deletions
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10
xds/src/main/java/io/grpc/xds/ClientXdsClient.java
View File

@ -2209,11 +2209,13 @@ final class ClientXdsClient extends XdsClient implements XdsResponseHandler, Res
}
retainedResources.add(edsName);
}
continue;
} else if (invalidResources.contains(resourceName)) {
subscriber.onError(Status.UNAVAILABLE.withDescription(errorDetail));
} else {
// For State of the World services, notify watchers when their watched resource is missing
// from the ADS update.
subscriber.onAbsent();
}
// For State of the World services, notify watchers when their watched resource is missing
// from the ADS update.
subscriber.onAbsent();
}
}
// LDS/CDS responses represents the state of the world, RDS/EDS resources not referenced in

4
xds/src/main/java/io/grpc/xds/XdsServerWrapper.java
View File

@ -571,10 +571,6 @@ final class XdsServerWrapper extends Server {
for (SslContextProviderSupplier s: toRelease) {
s.close();
}
if (!initialStarted) {
initialStarted = true;
initialStartFuture.set(exception);
}
if (restartTimer != null) {
restartTimer.cancel();
}

50
xds/src/test/java/io/grpc/xds/ClientXdsClientTestBase.java
View File

@ -1563,12 +1563,16 @@ public abstract class ClientXdsClientTestBase {
call.sendResponse(CDS, clusters, VERSION_1, "0000");
// The response NACKed with errors indicating indices of the failed resources.
call.verifyRequestNack(CDS, CDS_RESOURCE, "", "0000", NODE, ImmutableList.of(
"CDS response Cluster 'cluster.googleapis.com' validation error: "
String errorMsg = "CDS response Cluster 'cluster.googleapis.com' validation error: "
+ "Cluster cluster.googleapis.com: malformed UpstreamTlsContext: "
+ "io.grpc.xds.ClientXdsClient$ResourceInvalidException: "
+ "ca_certificate_provider_instance is required in upstream-tls-context"));
verifyNoInteractions(cdsResourceWatcher);
+ "ca_certificate_provider_instance is required in upstream-tls-context";
call.verifyRequestNack(CDS, CDS_RESOURCE, "", "0000", NODE, ImmutableList.of(errorMsg));
ArgumentCaptor<Status> captor = ArgumentCaptor.forClass(Status.class);
verify(cdsResourceWatcher).onError(captor.capture());
Status errorStatus = captor.getValue();
assertThat(errorStatus.getCode()).isEqualTo(Status.UNAVAILABLE.getCode());
assertThat(errorStatus.getDescription()).isEqualTo(errorMsg);
}
/**
@ -1587,10 +1591,14 @@ public abstract class ClientXdsClientTestBase {
call.sendResponse(CDS, clusters, VERSION_1, "0000");
// The response NACKed with errors indicating indices of the failed resources.
call.verifyRequestNack(CDS, CDS_RESOURCE, "", "0000", NODE, ImmutableList.of(
"CDS response Cluster 'cluster.googleapis.com' validation error: "
+ "transport-socket with name envoy.transport_sockets.bad not supported."));
verifyNoInteractions(cdsResourceWatcher);
String errorMsg = "CDS response Cluster 'cluster.googleapis.com' validation error: "
+ "transport-socket with name envoy.transport_sockets.bad not supported.";
call.verifyRequestNack(CDS, CDS_RESOURCE, "", "0000", NODE, ImmutableList.of(errorMsg));
ArgumentCaptor<Status> captor = ArgumentCaptor.forClass(Status.class);
verify(cdsResourceWatcher).onError(captor.capture());
Status errorStatus = captor.getValue();
assertThat(errorStatus.getCode()).isEqualTo(Status.UNAVAILABLE.getCode());
assertThat(errorStatus.getDescription()).isEqualTo(errorMsg);
}
@Test
@ -2438,10 +2446,15 @@ public abstract class ClientXdsClientTestBase {
List<Any> listeners = ImmutableList.of(Any.pack(listener));
call.sendResponse(ResourceType.LDS, listeners, "0", "0000");
// The response NACKed with errors indicating indices of the failed resources.
call.verifyRequestNack(LDS, LISTENER_RESOURCE, "", "0000", NODE, ImmutableList.of(
"LDS response Listener \'grpc/server?xds.resource.listening_address=0.0.0.0:7000\' "
+ "validation error: common-tls-context is required in downstream-tls-context"));
verifyNoInteractions(ldsResourceWatcher);
String errorMsg = "LDS response Listener \'grpc/server?xds.resource.listening_address="
+ "0.0.0.0:7000\' validation error: "
+ "common-tls-context is required in downstream-tls-context";
call.verifyRequestNack(LDS, LISTENER_RESOURCE, "", "0000", NODE, ImmutableList.of(errorMsg));
ArgumentCaptor<Status> captor = ArgumentCaptor.forClass(Status.class);
verify(ldsResourceWatcher).onError(captor.capture());
Status errorStatus = captor.getValue();
assertThat(errorStatus.getCode()).isEqualTo(Status.UNAVAILABLE.getCode());
assertThat(errorStatus.getDescription()).isEqualTo(errorMsg);
}
@Test
@ -2462,11 +2475,16 @@ public abstract class ClientXdsClientTestBase {
List<Any> listeners = ImmutableList.of(Any.pack(listener));
call.sendResponse(ResourceType.LDS, listeners, "0", "0000");
// The response NACKed with errors indicating indices of the failed resources.
String errorMsg = "LDS response Listener \'grpc/server?xds.resource.listening_address="
+ "0.0.0.0:7000\' validation error: "
+ "transport-socket with name envoy.transport_sockets.bad1 not supported.";
call.verifyRequestNack(LDS, LISTENER_RESOURCE, "", "0000", NODE, ImmutableList.of(
"LDS response Listener \'grpc/server?xds.resource.listening_address=0.0.0.0:7000\' "
+ "validation error: "
+ "transport-socket with name envoy.transport_sockets.bad1 not supported."));
verifyNoInteractions(ldsResourceWatcher);
errorMsg));
ArgumentCaptor<Status> captor = ArgumentCaptor.forClass(Status.class);
verify(ldsResourceWatcher).onError(captor.capture());
Status errorStatus = captor.getValue();
assertThat(errorStatus.getCode()).isEqualTo(Status.UNAVAILABLE.getCode());
assertThat(errorStatus.getDescription()).isEqualTo(errorMsg);
}
private DiscoveryRpcCall startResourceWatcher(

16
xds/src/test/java/io/grpc/xds/XdsClientWrapperForServerSdsTestMisc.java
View File

@ -63,15 +63,15 @@ import io.netty.handler.codec.http2.DefaultHttp2FrameWriter;
import io.netty.handler.codec.http2.Http2ConnectionDecoder;
import io.netty.handler.codec.http2.Http2ConnectionEncoder;
import io.netty.handler.codec.http2.Http2Settings;
import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.util.Arrays;
import java.util.Collections;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
@ -190,8 +190,8 @@ public class XdsClientWrapperForServerSdsTestMisc {
try {
start.get(5, TimeUnit.SECONDS);
fail("Start should throw exception");
} catch (ExecutionException ex) {
assertThat(ex.getCause()).isInstanceOf(IOException.class);
} catch (TimeoutException ex) {
assertThat(start.isDone()).isFalse();
}
assertThat(selectorManager.getSelectorToUpdateSelector()).isSameInstanceAs(NO_FILTER_CHAIN);
}
@ -214,8 +214,8 @@ public class XdsClientWrapperForServerSdsTestMisc {
try {
start.get(5, TimeUnit.SECONDS);
fail("Start should throw exception");
} catch (ExecutionException ex) {
assertThat(ex.getCause()).isInstanceOf(IOException.class);
} catch (TimeoutException ex) {
assertThat(start.isDone()).isFalse();
}
assertThat(selectorManager.getSelectorToUpdateSelector()).isSameInstanceAs(NO_FILTER_CHAIN);
}
@ -238,8 +238,8 @@ public class XdsClientWrapperForServerSdsTestMisc {
try {
start.get(5, TimeUnit.SECONDS);
fail("Start should throw exception");
} catch (ExecutionException ex) {
assertThat(ex.getCause()).isInstanceOf(IOException.class);
} catch (TimeoutException ex) {
assertThat(start.isDone()).isFalse();
}
assertThat(selectorManager.getSelectorToUpdateSelector()).isSameInstanceAs(NO_FILTER_CHAIN);
}

22
xds/src/test/java/io/grpc/xds/XdsServerWrapperTest.java
View File

@ -74,6 +74,7 @@ import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import java.util.concurrent.atomic.AtomicReference;
import org.junit.Before;
import org.junit.Rule;
@ -261,9 +262,10 @@ public class XdsServerWrapperTest {
xdsClient.ldsWatcher.onResourceDoesNotExist(ldsResource);
try {
start.get(5000, TimeUnit.MILLISECONDS);
fail("Start should throw exception");
} catch (ExecutionException ex) {
assertThat(ex.getCause()).isInstanceOf(IOException.class);
fail("server should not start() successfully.");
} catch (TimeoutException ex) {
// expect to block here.
assertThat(start.isDone()).isFalse();
}
verify(mockBuilder, times(1)).build();
verify(mockServer, never()).start();
@ -602,9 +604,10 @@ public class XdsServerWrapperTest {
xdsClient.ldsWatcher.onResourceDoesNotExist(ldsResource);
try {
start.get(5000, TimeUnit.MILLISECONDS);
fail("Start should throw exception");
} catch (ExecutionException ex) {
assertThat(ex.getCause()).isInstanceOf(IOException.class);
fail("server should not start()");
} catch (TimeoutException ex) {
// expect to block here.
assertThat(start.isDone()).isFalse();
}
verify(listener, times(1)).onNotServing(any(StatusException.class));
verify(mockBuilder, times(1)).build();
@ -627,6 +630,13 @@ public class XdsServerWrapperTest {
assertThat(sslSupplier0.isShutdown()).isTrue();
xdsClient.deliverRdsUpdate("rds",
Collections.singletonList(createVirtualHost("virtual-host-1")));
try {
start.get(5000, TimeUnit.MILLISECONDS);
fail("Start should throw exception");
} catch (ExecutionException ex) {
assertThat(ex.getCause()).isInstanceOf(IOException.class);
assertThat(ex.getCause().getMessage()).isEqualTo("error!");
}
RdsResourceWatcher saveRdsWatcher = xdsClient.rdsWatchers.get("rds");
assertThat(executor.forwardNanos(RETRY_DELAY_NANOS)).isEqualTo(1);
verify(mockBuilder, times(1)).build();