Package com.google.cloud.pubsublite.cloudpubsub

Class MessageTransforms

java.lang.Object

com.google.cloud.pubsublite.cloudpubsub.MessageTransforms

public class MessageTransforms
extends Object

MessageTransforms details how to transform message representations from Cloud Pub/Sub to Pub/Sub Lite.

Transformers are made public to allow user code that currently uses PubsubMessages to use interfaces interacting with Pub/Sub Lite.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	PUBSUB_LITE_EVENT_TIME_TIMESTAMP_PROTO

Method Summary

Modifier and Type	Method	Description
static com.google.protobuf.Timestamp	decodeAttributeEventTime(String encoded)	Decode a timestamp encoded with encodeAttributeEventTime.
static String	encodeAttributeEventTime(com.google.protobuf.Timestamp timestamp)	Encode a timestamp in a way that it will be interpreted as an event time if published on a message with an attribute named PUBSUB_LITE_EVENT_TIME_TIMESTAMP_PROTO.
static MessageTransformer<com.google.pubsub.v1.PubsubMessage,Message>	fromCpsPublishTransformer(KeyExtractor keyExtractor)
static MessageTransformer<Message,com.google.pubsub.v1.PubsubMessage>	toCpsPublishTransformer()
static MessageTransformer<SequencedMessage,com.google.pubsub.v1.PubsubMessage>	toCpsSubscribeTransformer()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

PUBSUB_LITE_EVENT_TIME_TIMESTAMP_PROTO

public static final String PUBSUB_LITE_EVENT_TIME_TIMESTAMP_PROTO

See Also:

• Constant Field Values

Method Details

encodeAttributeEventTime

public static String encodeAttributeEventTime(com.google.protobuf.Timestamp timestamp)

Encode a timestamp in a way that it will be interpreted as an event time if published on a message with an attribute named PUBSUB_LITE_EVENT_TIME_TIMESTAMP_PROTO.

decodeAttributeEventTime

public static com.google.protobuf.Timestamp decodeAttributeEventTime(String encoded)
                                                              throws com.google.api.gax.rpc.ApiException

Decode a timestamp encoded with encodeAttributeEventTime.

Throws:

com.google.api.gax.rpc.ApiException

toCpsSubscribeTransformer

public static MessageTransformer<SequencedMessage,com.google.pubsub.v1.PubsubMessage> toCpsSubscribeTransformer()

toCpsPublishTransformer

public static MessageTransformer<Message,com.google.pubsub.v1.PubsubMessage> toCpsPublishTransformer()

fromCpsPublishTransformer

public static MessageTransformer<com.google.pubsub.v1.PubsubMessage,Message> fromCpsPublishTransformer(KeyExtractor keyExtractor)