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xds: Don't cache rdsName in XdsDepManager 

We can easily compute the rdsName and avoiding the state means we don't
need to override onResourceDoesNotExist() to keep the cache in-sync with
the config.
This commit is contained in:
Eric Anderson 2025-05-31 07:27:15 -07:00
parent 4ee662fbcf
commit 6afacf589e
1 changed files with 14 additions and 22 deletions
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38
xds/src/main/java/io/grpc/xds/XdsDependencyManager.java
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@ -567,7 +567,6 @@ final class XdsDependencyManager implements XdsConfig.XdsClusterSubscriptionRegi
private class LdsWatcher extends XdsWatcherBase<XdsListenerResource.LdsUpdate> private class LdsWatcher extends XdsWatcherBase<XdsListenerResource.LdsUpdate>
implements RdsUpdateSupplier { implements RdsUpdateSupplier {
String rdsName;
private LdsWatcher(String resourceName) { private LdsWatcher(String resourceName) {
super(XdsListenerResource.getInstance(), resourceName); super(XdsListenerResource.getInstance(), resourceName);
@ -582,22 +581,18 @@ final class XdsDependencyManager implements XdsConfig.XdsClusterSubscriptionRegi
HttpConnectionManager httpConnectionManager = update.httpConnectionManager(); HttpConnectionManager httpConnectionManager = update.httpConnectionManager();
List<VirtualHost> virtualHosts; List<VirtualHost> virtualHosts;
String rdsName;
if (httpConnectionManager == null) { if (httpConnectionManager == null) {
// TCP listener. Unsupported config // TCP listener. Unsupported config
virtualHosts = Collections.emptyList(); // Not null, to not delegate to RDS virtualHosts = Collections.emptyList(); // Not null, to not delegate to RDS
rdsName = null;
} else { } else {
virtualHosts = httpConnectionManager.virtualHosts(); virtualHosts = httpConnectionManager.virtualHosts();
rdsName = httpConnectionManager.rdsName(); }
if (virtualHosts != null) {
updateRoutes(virtualHosts);
} }
if (virtualHosts != null) { String rdsName = getRdsName(update);
// No RDS watcher since we are getting RDS updates via LDS if (rdsName != null) {
updateRoutes(virtualHosts);
this.rdsName = null;
} else {
this.rdsName = rdsName;
addRdsWatcher(rdsName); addRdsWatcher(rdsName);
} }
@ -605,20 +600,17 @@ final class XdsDependencyManager implements XdsConfig.XdsClusterSubscriptionRegi
maybePublishConfig(); maybePublishConfig();
} }
@Override private String getRdsName(XdsListenerResource.LdsUpdate update) {
public void onResourceDoesNotExist(String resourceName) { HttpConnectionManager httpConnectionManager = update.httpConnectionManager();
if (cancelled) { if (httpConnectionManager == null) {
return; // TCP listener. Unsupported config
return null;
}
return httpConnectionManager.rdsName();
} }
checkArgument(resourceName().equals(resourceName), "Resource name does not match"); private RdsWatcher getRdsWatcher(XdsListenerResource.LdsUpdate update, WatcherTracer tracer) {
setDataAsStatus(Status.UNAVAILABLE.withDescription( String rdsName = getRdsName(update);
toContextString() + " does not exist" + nodeInfo()));
rdsName = null;
maybePublishConfig();
}
private RdsWatcher getRdsWatcher(WatcherTracer tracer) {
if (rdsName == null) { if (rdsName == null) {
return null; return null;
} }
@ -637,7 +629,7 @@ final class XdsDependencyManager implements XdsConfig.XdsClusterSubscriptionRegi
if (virtualHosts != null) { if (virtualHosts != null) {
return this; return this;
} }
RdsWatcher rdsWatcher = getRdsWatcher(tracer); RdsWatcher rdsWatcher = getRdsWatcher(getData().getValue(), tracer);
assert rdsWatcher != null; assert rdsWatcher != null;
return rdsWatcher; return rdsWatcher;
} }