Scalecube/RSocket-Transport

ScaleCube is a lightweight decentralized cluster membership, failure detection, messaging and gossip protocol library for the Java VM.

License

License

GroupId

GroupId

io.scalecube
ArtifactId

ArtifactId

rsocket-services-transport
Last Version

Last Version

2.2.5
Release Date

Release Date

Type

Type

jar
Description

Description

Scalecube/RSocket-Transport
ScaleCube is a lightweight decentralized cluster membership, failure detection, messaging and gossip protocol library for the Java VM.

Download rsocket-services-transport

How to add to project

<!-- https://jarcasting.com/artifacts/io.scalecube/rsocket-services-transport/ -->
<dependency>
    <groupId>io.scalecube</groupId>
    <artifactId>rsocket-services-transport</artifactId>
    <version>2.2.5</version>
</dependency>
// https://jarcasting.com/artifacts/io.scalecube/rsocket-services-transport/
implementation 'io.scalecube:rsocket-services-transport:2.2.5'
// https://jarcasting.com/artifacts/io.scalecube/rsocket-services-transport/
implementation ("io.scalecube:rsocket-services-transport:2.2.5")
'io.scalecube:rsocket-services-transport:jar:2.2.5'
<dependency org="io.scalecube" name="rsocket-services-transport" rev="2.2.5">
  <artifact name="rsocket-services-transport" type="jar" />
</dependency>
@Grapes(
@Grab(group='io.scalecube', module='rsocket-services-transport', version='2.2.5')
)
libraryDependencies += "io.scalecube" % "rsocket-services-transport" % "2.2.5"
[io.scalecube/rsocket-services-transport "2.2.5"]

Dependencies

compile (8)

Group / Artifact Type Version
io.scalecube : scalecube-services-api jar 2.2.5
org.slf4j : slf4j-api jar 1.7.7
io.rsocket : rsocket-core jar 0.11.8
io.rsocket : rsocket-transport-netty jar 0.11.8
io.projectreactor.netty : reactor-netty jar 0.8.1.RELEASE
com.fasterxml.jackson.core : jackson-core jar 2.9.6
com.fasterxml.jackson.core : jackson-databind jar 2.9.6
com.fasterxml.jackson.datatype : jackson-datatype-jsr310 jar 2.9.6

Project Modules

There are no modules declared in this project.

scalecube-services

Codacy Badge Maven Central SourceSpy Dashboard

MICROSERVICES 2.0

An open-source project that is focused on streamlining reactive-programming of Microservices Reactive-systems that scale, built by developers for developers.

ScaleCube Services provides a low latency Reactive Microservices library for peer-to-peer service registry and discovery based on gossip protocol, without single point-of-failure or bottlenecks.

Scalecube more gracefully address the cross cutting concernes of distributed microservices architecture.

ScaleCube Services Features:
  • Provision and interconnect microservices peers in a cluster
  • Fully Distributed with No single-point-of-failure or single-point-of-bottleneck
  • Fast - Low latency and high throughput
  • Scaleable over- cores, jvms, clusters, regions.
  • Built-in Service Discovery and service routing
  • Zero configuration, automatic peer-to-peer service discovery using gossip
  • Simple non-blocking, asynchronous programming model
  • Reactive Streams support.
    • Fire And Forget - Send and not wait for a reply
    • Request Response - Send single request and expect single reply
    • Request Stream - Send single request and expect stream of responses.
    • Request bidirectional - send stream of requests and expect stream of responses.
  • Built-in failure detection, fault tolerance, and elasticity
  • Routing and balancing strategies for both stateless and stateful services
  • Embeddable into existing applications
  • Natural Circuit-Breaker via scalecube-cluster discovery and failure detector.
  • Support Service instance tagging.
  • Modular, flexible deployment models and topology
  • pluggable api-gateway providers (http / websocket / rsocket)
  • pluggable service transports (tcp / aeron / rsocket)
  • pluggable encoders (json, SBE, Google protocol buffers)

User Guide:

Basic Usage:

The example provisions 2 cluster nodes and making a remote interaction.

  1. seed is a member node and provision no services of its own.
  2. then microservices variable is a member that joins seed member and provision GreetingService instance.
  3. finally from seed node - create a proxy by the GreetingService api and send a greeting request.
    //1. ScaleCube Node node with no members
    Microservices seed = Microservices.builder().startAwait();

    //2. Construct a ScaleCube node which joins the cluster hosting the Greeting Service
    Microservices microservices =
        Microservices.builder()
            .discovery(
                self ->
                    new ScalecubeServiceDiscovery(self)
                        .options(opts -> opts.seedMembers(toAddress(seed.discovery().address()))))
            .transport(ServiceTransports::rsocketServiceTransport)
            .services(new GreetingServiceImpl())
            .startAwait();

    //3. Create service proxy
    GreetingsService service = seed.call().api(GreetingsService.class);

    // Execute the services and subscribe to service events
    service.sayHello("joe").subscribe(consumer -> {
      System.out.println(consumer.message());
    });

Basic Service Example:

  • RequestOne: Send single request and expect single reply
  • RequestStream: Send single request and expect stream of responses.
  • RequestBidirectional: send stream of requests and expect stream of responses.

A service is nothing but an interface declaring what methods we wish to provision at our cluster.

@Service
public interface ExampleService {

  @ServiceMethod
  Mono<String> sayHello(String request);

  @ServiceMethod
  Flux<MyResponse> helloStream();

  @ServiceMethod
  Flux<MyResponse> helloBidirectional(Flux<MyRequest> requests);
}

API-Gateway:

Available api-gateways are rsocket, http and websocket

Basic API-Gateway example:

    Microservices.builder()
        .discovery(options -> options.seeds(seed.discovery().address()))
        .services(...) // OPTIONAL: services (if any) as part of this node.

        // configure list of gateways plugins exposing the apis
        .gateway(options -> new WebsocketGateway(options.id("ws").port(8080)))
        .gateway(options -> new HttpGateway(options.id("http").port(7070)))
        .gateway(options -> new RSocketGateway(options.id("rsws").port(9090)))

        .startAwait();

        // HINT: you can try connect using the api sandbox to these ports to try the api.
        // http://scalecube.io/api-sandbox/app/index.html

Maven

With scalecube-services you may plug-and-play alternative providers for Transport,Codecs and discovery. Scalecube is using ServiceLoader to load providers from class path,

You can think about scalecube as slf4j for microservices - Currently supported SPIs:

Transport providers:

  • scalecube-services-transport-rsocket: using rsocket to communicate with remote services.

Message codec providers:

Service discovery providers:

Binaries and dependency information for Maven can be found at http://search.maven.org.

https://mvnrepository.com/artifact/io.scalecube

To add a dependency on ScaleCube Services using Maven, use the following:

Maven Central

 <properties>
   <scalecube.version>2.x.x</scalecube.version>
 </properties>

 <!-- -------------------------------------------
   scalecube core and api:
 ------------------------------------------- -->

 <!-- scalecube apis   -->
 <dependency>
  <groupId>io.scalecube</groupId>
  <artifactId>scalecube-services-api</artifactId>
  <version>${scalecube.version}</version>
 </dependency>

 <!-- scalecube services module   -->
 <dependency>
  <groupId>io.scalecube</groupId>
  <artifactId>scalecube-services</artifactId>
  <version>${scalecube.version}</version>
 </dependency>


 <!--

     Plugins / SPIs: bellow a list of providers you may choose from. to constract your own configuration:
     you are welcome to build/contribute your own plugins please consider the existing ones as example.

  -->

 <!-- scalecube transport providers:  -->
 <dependency>
  <groupId>io.scalecube</groupId>
  <artifactId>scalecube-services-transport-rsocket</artifactId>
  <version>${scalecube.version}</version>
 </dependency>

Sponsored by OM2

io.scalecube

SCΛLΞ CUBΞ

⚛ High-Speed ⚛ Cloud-Native ⚛ Reactive Microservices ⚛

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