Astreu
High-performance Messaging System based on gRPC protocol written in Elixir (this is a WIP no production ready)
Architecture Overview
+-------------------------------+
| Astreu |
| |
| +---------------------------+ |
+-------------+ | | Management API | | +-------------+
| Subscribers | | +---------------------------+ | | Producers |
+-------------+ | Bi-directional | +---------------------------+ | Bi-directional | +-------------+
+---------------| +----------------->+ | PubSub Adapters | +------------------>+ | +-------------+
| | | || | Streams | +---------------------------+ | Streams | | | | | |
| | | || +<-----------------+ +---------------------------+ +<------------------+ | | | | |
| | +-------------+ | | Core Protocol | | +-------------+ | |
+-+-------------+ | +---------------------------+ | +-------------+ |
| +---------------------------+ | +-------------+
| | gRpc Server | |
| +---------------------------+ |
+-------------------------------+
Usage and Installation
- Run:
# docker run --rm --net=host -e RELEASE_NODE=unique_name_peer_node eigr/astreu:0.1.2- Connect as a Producer to the server from an SDK (Java SDK example below):
public static void main(final String[] args) {
final Producer producer =
Astreu.at("127.0.0.1", 9980)
.asPub("test", UUID.randomUUID().toString().toLowerCase());
final Publisher<ReplyMessage> publisher = producer.bind();
Flux.from(publisher).subscribe(replyMessage -> {
replyMessage.logger().info("Reply Message -> {}", replyMessage);
});
IntStream.range(0, 10).parallel().forEach(i -> {
producer.publish(
String.valueOf(i),
Any.newBuilder()
.setTypeUrl("io.astreu.custom/Text")
.setValue(ByteString.copyFrom(String.format("Hello World Astreu %s", i).getBytes()))
.build()
);
});
}- Connect as a Subscriber to the server from an SDK (Java SDK example below):
public static void main(final String[] args) {
final Publisher<MessageWithContext> publisher =
Astreu.at("127.0.0.1", 9980)
.asSub("test", "unique-subscription")
.receiveOnly(MessageType.EXCHANGE)
.bind();
Flux.from(publisher).subscribe(messageWithContext -> {
final AcknowledgeContext context = messageWithContext.getContext();
context.logger().debug("Message type is -> {}", messageWithContext.getType());
final Exchange message = messageWithContext.getMessage();
context.logger().info("Incoming Message {}", message);
context.accept();
});
}