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Merged
benjaminp merged 1 commit into from
Jul 15, 2025
Merged

ack notification events #400

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124 changes: 67 additions & 57 deletions java/com/engflow/notificationqueue/Client.java
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,8 @@
import io.grpc.netty.GrpcSslContexts;
import io.grpc.netty.NegotiationType;
import io.grpc.netty.NettyChannelBuilder;
import io.grpc.stub.ClientCallStreamObserver;
import io.grpc.stub.ClientResponseObserver;
import io.grpc.stub.MetadataUtils;
import io.grpc.stub.StreamObserver;
import io.netty.handler.ssl.SslContextBuilder;
Expand Down Expand Up @@ -121,71 +123,79 @@ private static void pull(
asyncStub = asyncStub.withInterceptors(MetadataUtils.newAttachHeadersInterceptor(header));
final CountDownLatch finishLatch = new CountDownLatch(1);
System.out.println("Listening for build events...");
StreamObserver<PullNotificationRequest> requestObserver =
asyncStub.pull(
new StreamObserver<PullNotificationResponse>() {
@Override
public void onNext(PullNotificationResponse response) {
Notification streamedNotification = response.getNotification().getNotification();
System.out.println("Notification: " + streamedNotification.toString());
try {
/** Forward notification data to external server */
forwardToBESStub(
forwardChannel,
streamedNotification.getId().toString(),
streamedNotification.getPayload().toString());
} catch (Exception e) {
System.err.println("Could not forward notification to external sever...");
}
Any notificationContent = streamedNotification.getPayload();
var observer =
new ClientResponseObserver<PullNotificationRequest, PullNotificationResponse>() {
private ClientCallStreamObserver<PullNotificationRequest> requestStream;

@Override
public void beforeStart(ClientCallStreamObserver<PullNotificationRequest> requestStream) {
this.requestStream = requestStream;
}

@Override
public void onNext(PullNotificationResponse response) {
if (!response.hasNotification()) {
return;
}
Notification streamedNotification = response.getNotification().getNotification();
System.out.println("Notification: " + streamedNotification.toString());
try {
/** Forward notification data to external server */
forwardToBESStub(
forwardChannel,
streamedNotification.getId().toString(),
streamedNotification.getPayload().toString());
} catch (Exception e) {
System.err.println("Could not forward notification to external sever...");
}
Any notificationContent = streamedNotification.getPayload();
try {
BuildLifecycleEventNotification lifeCycleEvent =
notificationContent.unpack(BuildLifecycleEventNotification.class);
/**
* Check if this is an invocation started event. Options are INVOCATION_STARTED and
* INVOCATION_FINISHED
*/
if (lifeCycleEvent.getKindCase().name().equals("INVOCATION_STARTED")) {
String invocation = lifeCycleEvent.getInvocationStarted().getInvocationId();
try {
BuildLifecycleEventNotification lifeCycleEvent =
notificationContent.unpack(BuildLifecycleEventNotification.class);
/**
* Check if this is an invocation started event. Options are INVOCATION_STARTED
* and INVOCATION_FINISHED
* Fetch the invocation using the grpc {@link EventStoreGrpc} stub using the
* acquired invocation id
*/
if (lifeCycleEvent.getKindCase().name().equals("INVOCATION_STARTED")) {
String invocation = lifeCycleEvent.getInvocationStarted().getInvocationId();
try {
/**
* Fetch the invocation using the grpc {@link EventStoreGrpc} stub using the
* acquired invocation id
*/
getInvocations(channel, invocation, header, forwardChannel);
} catch (InterruptedException e) {
System.err.println("Could not get invocation with uuid " + invocation);
}
}

} catch (InvalidProtocolBufferException e) {
throw new RuntimeException(e);
getInvocations(channel, invocation, header, forwardChannel);
} catch (InterruptedException e) {
System.err.println("Could not get invocation with uuid " + invocation);
}
}

@Override
public void onError(Throwable t) {
System.err.println("Error on request: " + t.getMessage());
finishLatch.countDown();
}
} catch (InvalidProtocolBufferException e) {
throw new RuntimeException(e);
}
requestStream.onNext(
PullNotificationRequest.newBuilder()
.addAcknowledgementTokens(response.getNotification().getToken())
.build());
}

@Override
public void onCompleted() {
System.out.println("Finished pulling notifications");
finishLatch.countDown();
}
});
@Override
public void onError(Throwable t) {
System.err.println("Error on request: " + t.getMessage());
finishLatch.countDown();
}

try {
requestObserver.onNext(
PullNotificationRequest.newBuilder()
.setQueue(QueueId.newBuilder().setName(queueName).build())
.build());
} catch (RuntimeException e) {
// Cancel RPC
requestObserver.onError(e);
throw e;
}
@Override
public void onCompleted() {
System.out.println("Finished pulling notifications");
finishLatch.countDown();
}
};
asyncStub.pull(observer);

observer.requestStream.onNext(
PullNotificationRequest.newBuilder()
.setQueue(QueueId.newBuilder().setName(queueName).build())
.build());

finishLatch.await();
}
Expand Down