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Blockhound: Allow blocking call in kubernetes-client WatchEventsListener #6287

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Blockhound: Allow blocking call in kubernetes-client WatchEventsListener #6287

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a000801
Allow blocking call in kubernetes-client `WatchEventsListener`
sh-cho Jun 20, 2025
ea367c5
Add `KubernetesTestBlockHoundIntegration`
sh-cho Jul 1, 2025
ca2d85a
Add license header
sh-cho Jul 1, 2025
d432271
Add allowing blocking call `onFailure`
sh-cho Jul 1, 2025
8c78e0b
WIP
minwoox Jul 3, 2025
a8fc287
WIP
minwoox Jul 3, 2025
43cf415
Add vert.x-internal-blocking
minwoox Jul 3, 2025
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7 changes: 0 additions & 7 deletions ...src/main/java/com/linecorp/armeria/client/kubernetes/KubernetesBlockHoundIntegration.java
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Original file line number Diff line number Diff line change
Expand Up @@ -32,12 +32,5 @@ public void applyTo(Builder builder) {
// a fully readable ByteBuffer.
builder.allowBlockingCallsInside(
"io.fabric8.kubernetes.client.http.HttpClientReadableByteChannel", "doLockedAndSignal");
// StandardHttpRequest creates UUIDs using java.util.UUID.randomUUID() that uses SecureRandom.
// The method is temporarily allowed until the problem is resolved in the upstream.
// See: https://github.com/fabric8io/kubernetes-client/issues/5735
// TODO(ikhoon): Remove this once the issue is fixed.
builder.allowBlockingCallsInside(
"io.fabric8.kubernetes.client.http.StandardHttpRequest$Builder",
"build");
}
}
8 changes: 8 additions & 0 deletions ...main/java/com/linecorp/armeria/internal/testing/InternalTestingBlockHoundIntegration.java
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Expand Up @@ -52,6 +52,8 @@ public void write(int b) throws IOException {

@Override
public void applyTo(Builder builder) {
builder.nonBlockingThreadPredicate(predicate -> predicate.and(
thread -> !thread.getName().startsWith("vert.x-internal-blocking")));

// tests are allowed to block event loops
builder.allowBlockingCallsInside("com.linecorp.armeria.internal.testing.BlockingUtils",
Expand All @@ -76,6 +78,12 @@ public void applyTo(Builder builder) {
builder.allowBlockingCallsInside("com.linecorp.armeria.client.ClientFactory", "ofDefault");
builder.allowBlockingCallsInside("io.envoyproxy.controlplane.cache.SimpleCache", "createWatch");
builder.allowBlockingCallsInside("io.grpc.netty.shaded.io.netty.util.Version", "identify");
builder.allowBlockingCallsInside(
"io.fabric8.kubernetes.client.server.mock.WatchEventsListener", "onClosed");
builder.allowBlockingCallsInside(
"io.fabric8.kubernetes.client.server.mock.WatchEventsListener", "onFailure");
builder.allowBlockingCallsInside("io.fabric8.mockwebserver.internal.WebSocketSession", "onOpen");
builder.allowBlockingCallsInside("io.vertx.core.spi.tls.DefaultSslContextFactory", "createContext");

// prints the exception which makes it easier to debug issues
builder.blockingMethodCallback(this::writeBlockingMethod);
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