eigr/spawn-dart

Dart SDK for Spawn applications

Spawn Dart SDK

Dart User Language Support for Spawn.

Table of Contents

1. Overview
2. Getting Started

Overview

Spawn is a Stateful Serverless Runtime and Framework basead on the Actor Model and operates as a Service Mesh.

Spawn's main goal is to remove the complexity in developing services or microservices, providing simple and intuitive APIs, as well as a declarative deployment and configuration model and based on a Serverless architecture and Actor Model. This leaves the developer to focus on developing the business domain while the platform deals with the complexities and infrastructure needed to support the scalable, resilient, distributed, and event-driven architecture that modern systems requires.

Spawn is based on the sidecar proxy pattern to provide a polyglot Actor Model framework and platform. Spawn's technology stack, built on the BEAM VM (Erlang's virtual machine) and OTP, provides support for different languages from its native Actor model.

For more information consult the main repository documentation.

Getting Started

TODO

syntax = "proto3";

package domain;

message State {
  repeated string languages = 1;
}

message Request {
  string language = 1;
}

message Reply {
  string response = 1;
}

import 'package:spawn_app_example/src/generated/protos/domain.pb.dart';
import 'package:spawn_dart/spawn_dart.dart';

@StatefulNamedActor(
  'joe',
  State,
)
class JoeActor {
  @Action()
  Value setLanguage(Request request, Context ctx) {
    if (ctx.getState().isPresent) {
      var currentState = ctx.getState().value as State;
      print("Current state is $currentState");
    }

    return Value()
      ..withReponse(Reply.create()..response = "dart")
      ..withState(State.create()..languages.addAll(["erlang, dart"]));
  }
}

import 'package:spawn_app_example/joe_actor.dart';
import 'package:spawn_dart/spawn_dart.dart';

void main() {
  SpawnSystem()
      .create("spawn-system")
      .withPort(8091)
      .withStatefulNamedActor(JoeActor)
      .start();
}