com.google.cloud.pubsublite
com.google.cloud.pubsublite.cloudpubsub
com.google.cloud.pubsublite.cloudpubsub.internal
com.google.cloud.pubsublite.internal
com.google.cloud.pubsublite.internal.testing
com.google.cloud.pubsublite.internal.wire
com.google.cloud.pubsublite.proto
com.google.cloud.pubsublite.v1
The interfaces provided are listed below, along with usage samples.
AdminServiceClient
Service Description: The service that a client application uses to manage topics and subscriptions, such creating, listing, and deleting topics and subscriptions.
Sample for AdminServiceClient:
try (AdminServiceClient adminServiceClient = AdminServiceClient.create()) {
LocationName parent = LocationName.of("[PROJECT]", "[LOCATION]");
Topic topic = Topic.newBuilder().build();
String topicId = "topicId-1139259734";
Topic response = adminServiceClient.createTopic(parent, topic, topicId);
}
CursorServiceClient
Service Description: The service that a subscriber client application uses to manage committed cursors while receiving messsages. A cursor represents a subscriber's progress within a topic partition for a given subscription.
Sample for CursorServiceClient:
try (CursorServiceClient cursorServiceClient = CursorServiceClient.create()) {
CommitCursorRequest request =
CommitCursorRequest.newBuilder()
.setSubscription("subscription341203229")
.setPartition(-1799810326)
.setCursor(Cursor.newBuilder().build())
.build();
CommitCursorResponse response = cursorServiceClient.commitCursor(request);
}
PublisherServiceClient
Service Description: The service that a publisher client application uses to publish messages
to topics. Published messages are retained by the service for the duration of the retention
period configured for the respective topic, and are delivered to subscriber clients upon request
(via the SubscriberService).
Sample for PublisherServiceClient:
try (PublisherServiceClient publisherServiceClient = PublisherServiceClient.create()) {
BidiStream<PublishRequest, PublishResponse> bidiStream =
publisherServiceClient.publishCallable().call();
PublishRequest request = PublishRequest.newBuilder().build();
bidiStream.send(request);
for (PublishResponse response : bidiStream) {
// Do something when a response is received.
}
}
SubscriberServiceClient
Service Description: The service that a subscriber client application uses to receive messages from subscriptions.
Sample for SubscriberServiceClient:
try (SubscriberServiceClient subscriberServiceClient = SubscriberServiceClient.create()) {
BidiStream<SubscribeRequest, SubscribeResponse> bidiStream =
subscriberServiceClient.subscribeCallable().call();
SubscribeRequest request = SubscribeRequest.newBuilder().build();
bidiStream.send(request);
for (SubscribeResponse response : bidiStream) {
// Do something when a response is received.
}
}
PartitionAssignmentServiceClient
Service Description: The service that a subscriber client application uses to determine which partitions it should connect to.
Sample for PartitionAssignmentServiceClient:
try (PartitionAssignmentServiceClient partitionAssignmentServiceClient =
PartitionAssignmentServiceClient.create()) {
BidiStream<PartitionAssignmentRequest, PartitionAssignment> bidiStream =
partitionAssignmentServiceClient.assignPartitionsCallable().call();
PartitionAssignmentRequest request = PartitionAssignmentRequest.newBuilder().build();
bidiStream.send(request);
for (PartitionAssignment response : bidiStream) {
// Do something when a response is received.
}
}
TopicStatsServiceClient
Service Description: This service allows users to get stats about messages in their topic.
Sample for TopicStatsServiceClient:
try (TopicStatsServiceClient topicStatsServiceClient = TopicStatsServiceClient.create()) {
ComputeMessageStatsRequest request =
ComputeMessageStatsRequest.newBuilder()
.setTopic(TopicName.of("[PROJECT]", "[LOCATION]", "[TOPIC]").toString())
.setPartition(-1799810326)
.setStartCursor(Cursor.newBuilder().build())
.setEndCursor(Cursor.newBuilder().build())
.build();
ComputeMessageStatsResponse response = topicStatsServiceClient.computeMessageStats(request);
}