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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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36
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>
implements RdsUpdateSupplier {
String rdsName;
private LdsWatcher(String resourceName) {
super(XdsListenerResource.getInstance(), resourceName);
@ -582,22 +581,18 @@ final class XdsDependencyManager implements XdsConfig.XdsClusterSubscriptionRegi
HttpConnectionManager httpConnectionManager = update.httpConnectionManager();
List<VirtualHost> virtualHosts;
String rdsName;
if (httpConnectionManager == null) {
// TCP listener. Unsupported config
virtualHosts = Collections.emptyList(); // Not null, to not delegate to RDS
rdsName = null;
} else {
virtualHosts = httpConnectionManager.virtualHosts();
rdsName = httpConnectionManager.rdsName();
}
if (virtualHosts != null) {
updateRoutes(virtualHosts);
}
if (virtualHosts != null) {
// No RDS watcher since we are getting RDS updates via LDS
updateRoutes(virtualHosts);
this.rdsName = null;
} else {
this.rdsName = rdsName;
String rdsName = getRdsName(update);
if (rdsName != null) {
addRdsWatcher(rdsName);
}
@ -605,20 +600,17 @@ final class XdsDependencyManager implements XdsConfig.XdsClusterSubscriptionRegi
maybePublishConfig();
}
@Override
public void onResourceDoesNotExist(String resourceName) {
if (cancelled) {
return;
private String getRdsName(XdsListenerResource.LdsUpdate update) {
HttpConnectionManager httpConnectionManager = update.httpConnectionManager();
if (httpConnectionManager == null) {
// TCP listener. Unsupported config
return null;
}
checkArgument(resourceName().equals(resourceName), "Resource name does not match");
setDataAsStatus(Status.UNAVAILABLE.withDescription(
toContextString() + " does not exist" + nodeInfo()));
rdsName = null;
maybePublishConfig();
return httpConnectionManager.rdsName();
}
private RdsWatcher getRdsWatcher(WatcherTracer tracer) {
private RdsWatcher getRdsWatcher(XdsListenerResource.LdsUpdate update, WatcherTracer tracer) {
String rdsName = getRdsName(update);
if (rdsName == null) {
return null;
}
@ -637,7 +629,7 @@ final class XdsDependencyManager implements XdsConfig.XdsClusterSubscriptionRegi
if (virtualHosts != null) {
return this;
}
RdsWatcher rdsWatcher = getRdsWatcher(tracer);
RdsWatcher rdsWatcher = getRdsWatcher(getData().getValue(), tracer);
assert rdsWatcher != null;
return rdsWatcher;
}