/
ProducerSettings.java
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/
ProducerSettings.java
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/*
* Copyright 2020 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.cloud.pubsublite.kafka;
import static com.google.cloud.pubsublite.internal.ExtractStatus.toCanonical;
import com.google.api.gax.rpc.ApiException;
import com.google.auto.value.AutoValue;
import com.google.cloud.pubsublite.AdminClient;
import com.google.cloud.pubsublite.AdminClientSettings;
import com.google.cloud.pubsublite.TopicPath;
import com.google.cloud.pubsublite.internal.wire.*;
import com.google.cloud.pubsublite.internal.wire.PubsubContext.Framework;
import com.google.cloud.pubsublite.v1.PublisherServiceClient;
import com.google.cloud.pubsublite.v1.PublisherServiceSettings;
import org.apache.kafka.clients.producer.Producer;
@AutoValue
public abstract class ProducerSettings {
private static final Framework FRAMEWORK = Framework.of("KAFKA_SHIM");
// Required parameters.
abstract TopicPath topicPath();
public static Builder newBuilder() {
return new AutoValue_ProducerSettings.Builder();
}
@AutoValue.Builder
public abstract static class Builder {
// Required parameters.
public abstract Builder setTopicPath(TopicPath path);
public abstract ProducerSettings build();
}
public Producer<byte[], byte[]> instantiate() throws ApiException {
PartitionCountWatchingPublisherSettings publisherSettings =
PartitionCountWatchingPublisherSettings.newBuilder()
.setTopic(topicPath())
.setPublisherFactory(
partition -> {
try {
return SinglePartitionPublisherBuilder.newBuilder()
.setServiceClient(
PublisherServiceClient.create(
ServiceClients.addDefaultSettings(
topicPath().location().region(),
ServiceClients.addDefaultMetadata(
PubsubContext.of(FRAMEWORK),
RoutingMetadata.of(topicPath(), partition),
PublisherServiceSettings.newBuilder()))))
.setTopic(topicPath())
.setPartition(partition)
.build();
} catch (Throwable t) {
throw toCanonical(t).underlying;
}
})
.build();
SharedBehavior shared =
new SharedBehavior(
AdminClient.create(
AdminClientSettings.newBuilder()
.setRegion(topicPath().location().region())
.build()));
return new PubsubLiteProducer(publisherSettings.instantiate(), shared, topicPath());
}
}