Package com.codename1.backend.messaging

package com.codename1.backend.messaging

Messaging: sending through MessageTemplate and receiving in @MessageListener methods, over a queue in the application's own database, Redis Streams, RabbitMQ, Kafka, Amazon SQS or Google Cloud Pub/Sub -- whichever Messaging is configured with.

Listeners are found and wired at build time: no reflection, no proxies, and a protocol the configuration does not name is not in the application.

Related Packages

Package	Description
com.codename1.backend	The Codename One backend runtime: the server side of an application, written in the same Java as the app and compiled to a native server binary.
com.codename1.backend.messaging.amqp	The AMQP 0-9-1 transport, for RabbitMQ.
com.codename1.backend.messaging.kafka	The Apache Kafka transport.
com.codename1.backend.messaging.pubsub	The Google Cloud Pub/Sub transport.
com.codename1.backend.messaging.redis	The Redis Streams transport.
com.codename1.backend.messaging.sqs	The Amazon SQS transport.

Class	Description
Message	One message: a destination, an optional key, headers, and the payload as bytes.
MessageHandler	What a subscription calls for each message.
MessageTemplate	Sends messages through the server's transport: what an application injects to publish, as it would Spring's KafkaTemplate or RabbitTemplate.
MessageTransport	A broker connection: what sends messages and runs subscriptions.
Messaging	Opens the MessageTransport a configuration names, and finds the one of the calling thread's server.
Messaging.TransportFactory	Opens a broker transport for a URL of its scheme.
PollingTransport	A transport whose consumers ask the broker for messages in a loop: the database, Redis Streams, Kafka.
PollingTransport.Delivery	One message as polled, with whatever the broker needs to acknowledge it.
RetryPolicy	How often a failed message is delivered again, and how long apart.
Subscription	A running subscription.