Revert "fix: add topic existing validation"

CHANGES.md

@@ -59,10 +59,6 @@
 
 * Added support for using vLLM in the RunInference transform (Python) ([#32528](https://github.com/apache/beam/issues/32528))
 
-## I/Os
-
-* PubsubIO will validate that the Pub/Sub topic exists before running the Read/Write pipeline (Java) ([#32465](https://github.com/apache/beam/pull/32465))
-
 ## New Features / Improvements
 
 * Dataflow worker can install packages from Google Artifact Registry Python repositories (Python) ([#32123](https://github.com/apache/beam/issues/32123)).

sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/pubsub/PubsubClient.java

@@ -507,9 +507,6 @@ public abstract void modifyAckDeadline(
   /** Return a list of topics for {@code project}. */
   public abstract List<TopicPath> listTopics(ProjectPath project) throws IOException;
 
-  /** Return {@literal true} if {@code topic} exists. */
-  public abstract boolean isTopicExists(TopicPath topic) throws IOException;
-
   /** Create {@code subscription} to {@code topic}. */
   public abstract void createSubscription(
       TopicPath topic, SubscriptionPath subscription, int ackDeadlineSeconds) throws IOException;

sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/pubsub/PubsubGrpcClient.java

@@ -54,7 +54,6 @@
 import io.grpc.Channel;
 import io.grpc.ClientInterceptors;
 import io.grpc.ManagedChannel;
-import io.grpc.StatusRuntimeException;
 import io.grpc.auth.ClientAuthInterceptor;
 import io.grpc.netty.GrpcSslContexts;
 import io.grpc.netty.NegotiationType;
@@ -373,21 +372,6 @@ public List<TopicPath> listTopics(ProjectPath project) throws IOException {
     return topics;
   }
 
-  @Override
-  public boolean isTopicExists(TopicPath topic) throws IOException {
-    GetTopicRequest request = GetTopicRequest.newBuilder().setTopic(topic.getPath()).build();
-    try {
-      publisherStub().getTopic(request);
-      return true;
-    } catch (StatusRuntimeException e) {
-      if (e.getStatus().getCode() == io.grpc.Status.Code.NOT_FOUND) {
-        return false;
-      }
-
-      throw e;
-    }
-  }
-
   @Override
   public void createSubscription(
       TopicPath topic, SubscriptionPath subscription, int ackDeadlineSeconds) throws IOException {

sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.java

@@ -50,7 +50,6 @@
 import org.apache.beam.sdk.io.gcp.pubsub.PubsubClient.SubscriptionPath;
 import org.apache.beam.sdk.io.gcp.pubsub.PubsubClient.TopicPath;
 import org.apache.beam.sdk.metrics.Lineage;
-import org.apache.beam.sdk.options.PipelineOptions;
 import org.apache.beam.sdk.options.ValueProvider;
 import org.apache.beam.sdk.options.ValueProvider.NestedValueProvider;
 import org.apache.beam.sdk.options.ValueProvider.StaticValueProvider;
@@ -861,8 +860,6 @@ public abstract static class Read<T> extends PTransform<PBegin, PCollection<T>>
 
     abstract ErrorHandler<BadRecord, ?> getBadRecordErrorHandler();
 
-    abstract boolean getValidate();
-
     abstract Builder<T> toBuilder();
 
     static <T> Builder<T> newBuilder(SerializableFunction<PubsubMessage, T> parseFn) {
@@ -874,7 +871,6 @@ static <T> Builder<T> newBuilder(SerializableFunction<PubsubMessage, T> parseFn)
       builder.setNeedsOrderingKey(false);
       builder.setBadRecordRouter(BadRecordRouter.THROWING_ROUTER);
       builder.setBadRecordErrorHandler(new DefaultErrorHandler<>());
-      builder.setValidate(true);
       return builder;
     }
 
@@ -922,8 +918,6 @@ abstract static class Builder<T> {
       abstract Builder<T> setBadRecordErrorHandler(
           ErrorHandler<BadRecord, ?> badRecordErrorHandler);
 
-      abstract Builder<T> setValidate(boolean validation);
-
       abstract Read<T> build();
     }
 
@@ -1103,11 +1097,6 @@ public Read<T> withErrorHandler(ErrorHandler<BadRecord, ?> badRecordErrorHandler
           .build();
     }
 
-    /** Disable validation of the existence of the topic. */
-    public Read<T> withoutValidation() {
-      return toBuilder().setValidate(false).build();
-    }
-
     @VisibleForTesting
     /**
      * Set's the internal Clock.
@@ -1273,35 +1262,6 @@ public T apply(PubsubMessage input) {
       return read.setCoder(getCoder());
     }
 
-    @Override
-    public void validate(PipelineOptions options) {
-      if (!getValidate()) {
-        return;
-      }
-
-      PubsubOptions psOptions = options.as(PubsubOptions.class);
-
-      // Validate the existence of the topic.
-      if (getTopicProvider() != null) {
-        PubsubTopic topic = getTopicProvider().get();
-        boolean topicExists = true;
-        try (PubsubClient pubsubClient =
-            getPubsubClientFactory()
-                .newClient(getTimestampAttribute(), getIdAttribute(), psOptions)) {
-          topicExists =
-              pubsubClient.isTopicExists(
-                  PubsubClient.topicPathFromName(topic.project, topic.topic));
-        } catch (Exception e) {
-          throw new RuntimeException(e);
-        }
-
-        if (!topicExists) {
-          throw new IllegalArgumentException(
-              String.format("Pubsub topic '%s' does not exist.", topic));
-        }
-      }
-    }
-
     @Override
     public void populateDisplayData(DisplayData.Builder builder) {
       super.populateDisplayData(builder);
@@ -1381,8 +1341,6 @@ public abstract static class Write<T> extends PTransform<PCollection<T>, PDone>
 
     abstract ErrorHandler<BadRecord, ?> getBadRecordErrorHandler();
 
-    abstract boolean getValidate();
-
     abstract Builder<T> toBuilder();
 
     static <T> Builder<T> newBuilder(
@@ -1392,7 +1350,6 @@ static <T> Builder<T> newBuilder(
       builder.setFormatFn(formatFn);
       builder.setBadRecordRouter(BadRecordRouter.THROWING_ROUTER);
       builder.setBadRecordErrorHandler(new DefaultErrorHandler<>());
-      builder.setValidate(true);
       return builder;
     }
 
@@ -1429,8 +1386,6 @@ abstract Builder<T> setFormatFn(
       abstract Builder<T> setBadRecordErrorHandler(
           ErrorHandler<BadRecord, ?> badRecordErrorHandler);
 
-      abstract Builder<T> setValidate(boolean validation);
-
       abstract Write<T> build();
     }
 
@@ -1441,14 +1396,11 @@ abstract Builder<T> setBadRecordErrorHandler(
      * {@code topic} string.
      */
     public Write<T> to(String topic) {
-      ValueProvider<String> topicProvider = StaticValueProvider.of(topic);
-      validateTopic(topicProvider);
-      return to(topicProvider);
+      return to(StaticValueProvider.of(topic));
     }
 
     /** Like {@code topic()} but with a {@link ValueProvider}. */
     public Write<T> to(ValueProvider<String> topic) {
-      validateTopic(topic);
       return toBuilder()
           .setTopicProvider(NestedValueProvider.of(topic, PubsubTopic::fromPath))
           .setTopicFunction(null)
@@ -1469,13 +1421,6 @@ public Write<T> to(SerializableFunction<ValueInSingleWindow<T>, String> topicFun
           .build();
     }
 
-    /** Handles validation of {@code topic}. */
-    private static void validateTopic(ValueProvider<String> topic) {
-      if (topic.isAccessible()) {
-        PubsubTopic.fromPath(topic.get());
-      }
-    }
-
     /**
      * The default client to write to Pub/Sub is the {@link PubsubJsonClient}, created by the {@link
      * PubsubJsonClient.PubsubJsonClientFactory}. This function allows to change the Pub/Sub client
@@ -1552,14 +1497,6 @@ public Write<T> withErrorHandler(ErrorHandler<BadRecord, ?> badRecordErrorHandle
           .build();
     }
 
-    /**
-     * Disable validation of the existence of the topic. Validation of the topic works only if the
-     * topic is set statically and not dynamically.
-     */
-    public Write<T> withoutValidation() {
-      return toBuilder().setValidate(false).build();
-    }
-
     @Override
     public PDone expand(PCollection<T> input) {
       if (getTopicProvider() == null && !getDynamicDestinations()) {
@@ -1636,35 +1573,6 @@ public void populateDisplayData(DisplayData.Builder builder) {
           builder, getTimestampAttribute(), getIdAttribute(), getTopicProvider());
     }
 
-    @Override
-    public void validate(PipelineOptions options) {
-      if (!getValidate()) {
-        return;
-      }
-
-      PubsubOptions psOptions = options.as(PubsubOptions.class);
-
-      // Validate the existence of the topic.
-      if (getTopicProvider() != null) {
-        PubsubTopic topic = getTopicProvider().get();
-        boolean topicExists = true;
-        try (PubsubClient pubsubClient =
-            getPubsubClientFactory()
-                .newClient(getTimestampAttribute(), getIdAttribute(), psOptions)) {
-          topicExists =
-              pubsubClient.isTopicExists(
-                  PubsubClient.topicPathFromName(topic.project, topic.topic));
-        } catch (Exception e) {
-          throw new RuntimeException(e);
-        }
-
-        if (!topicExists) {
-          throw new IllegalArgumentException(
-              String.format("Pubsub topic '%s' does not exist.", topic));
-        }
-      }
-    }
-
     /**
      * Writer to Pubsub which batches messages from bounded collections.
      *

sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/pubsub/PubsubJsonClient.java

@@ -19,7 +19,6 @@
 
 import static org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.base.Preconditions.checkState;
 
-import com.google.api.client.googleapis.json.GoogleJsonResponseException;
 import com.google.api.client.http.HttpRequestInitializer;
 import com.google.api.services.pubsub.Pubsub;
 import com.google.api.services.pubsub.Pubsub.Projects.Subscriptions;
@@ -311,19 +310,6 @@ public List<TopicPath> listTopics(ProjectPath project) throws IOException {
     return topics;
   }
 
-  @Override
-  public boolean isTopicExists(TopicPath topic) throws IOException {
-    try {
-      pubsub.projects().topics().get(topic.getPath()).execute();
-      return true;
-    } catch (GoogleJsonResponseException e) {
-      if (e.getStatusCode() == 404) {
-        return false;
-      }
-      throw e;
-    }
-  }
-
   @Override
   public void createSubscription(
       TopicPath topic, SubscriptionPath subscription, int ackDeadlineSeconds) throws IOException {

sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/pubsub/PubsubTestClient.java

@@ -605,12 +605,6 @@ public List<TopicPath> listTopics(ProjectPath project) throws IOException {
     throw new UnsupportedOperationException();
   }
 
-  @Override
-  public boolean isTopicExists(TopicPath topic) throws IOException {
-    // Always return true for testing purposes.
-    return true;
-  }
-
   @Override
   public void createSubscription(
       TopicPath topic, SubscriptionPath subscription, int ackDeadlineSeconds) throws IOException {

sdks/java/io/google-cloud-platform/src/test/java/org/apache/beam/sdk/io/gcp/pubsub/PubsubGrpcClientTest.java

@@ -40,7 +40,6 @@
 import com.google.pubsub.v1.Topic;
 import io.grpc.ManagedChannel;
 import io.grpc.Server;
-import io.grpc.Status;
 import io.grpc.StatusRuntimeException;
 import io.grpc.inprocess.InProcessChannelBuilder;
 import io.grpc.inprocess.InProcessServerBuilder;
@@ -433,43 +432,4 @@ public void getSchema(GetSchemaRequest request, StreamObserver<Schema> responseO
       server.shutdownNow();
     }
   }
-
-  @Test
-  public void isTopicExists() throws IOException {
-    initializeClient(null, null);
-    TopicPath topicDoesNotExist =
-        PubsubClient.topicPathFromPath("projects/testProject/topics/dontexist");
-    TopicPath topicExists = PubsubClient.topicPathFromPath("projects/testProject/topics/exist");
-
-    PublisherImplBase publisherImplBase =
-        new PublisherImplBase() {
-          @Override
-          public void getTopic(GetTopicRequest request, StreamObserver<Topic> responseObserver) {
-            String topicPath = request.getTopic();
-            if (topicPath.equals(topicDoesNotExist.getPath())) {
-              responseObserver.onError(
-                  new StatusRuntimeException(Status.fromCode(Status.Code.NOT_FOUND)));
-            }
-            if (topicPath.equals(topicExists.getPath())) {
-              responseObserver.onNext(
-                  Topic.newBuilder()
-                      .setName(topicPath)
-                      .setSchemaSettings(
-                          SchemaSettings.newBuilder().setSchema(SCHEMA.getPath()).build())
-                      .build());
-              responseObserver.onCompleted();
-            }
-          }
-        };
-    Server server =
-        InProcessServerBuilder.forName(channelName).addService(publisherImplBase).build().start();
-    try {
-      assertEquals(false, client.isTopicExists(topicDoesNotExist));
-
-      assertEquals(true, client.isTopicExists(topicExists));
-
-    } finally {
-      server.shutdownNow();
-    }
-  }
 }