Boot a microservice utilising functionality built on top of spray. Play is based on a lightweight, stateless, webfriendly architecture. We are considering to redesign our web site based on spray. Its a sort of limbo for people who need to decide what to pick for their projects.
May 06, 2014 any application can of course also mean a javabased server. Net and therefore i began to read the book reactive messaging patterns with the actor model by vaughn vernon, this book applies the patterns described in enterprise integration patterns using scala language and akka actor model. Choose from these featured templates or enter a template name. This is a model that has been used with great success in erlang and requires the users to design their applications around it. This is what you need to make xsbtplugin work with the spray application. Aug 02, 20 the m8 release of spray is significantly faster since it is based on the new actorbased akka io core. Spray is a library written on top of akka and scala that allows to quickly create rest interfaces. Here are some external sample projects created by akkas users.
A curated list of awesome scala frameworks, libraries and software. Apart from a simple helloworld server, you can also see how spray integrates with akka actors, futures and how typesafe parameter handling works. However, im not an expert in scala so i couldnt understand the examples very well as i wish. These examples are extracted from open source projects. We are going to guide you from the download of the right version of lakka to the launch of a game in 6 steps. Built on akka, play provides predictable and minimal resource consumption cpu, memory, threads for highlyscalable applications. The client can send messages and the server can receive messages at any time, as long as there is an active websocket connection between the. Just like akka spray can relies on the typesafe config library for configuration.
Basic scala scripts are hanging indefinitely without executing when invoked on mac os. In this tutorial, i am going to use sprays spraycan, sprayx, sprayjson artefacts with the akka artefacts to build an. Akka is a toolkit and runtime for building highly concurrent, distributed, and faulttolerant eventdriven applications on the jvm. Defaultjsonprotocol implicit val errordataformat jsonformat3errordata implicit val serviceresponseerrorformat jsonformat2serviceresponseerror case object notok. Akka is an open source project built by lightbend, it provides a simpler. Akka brings similar features around concurrency and parallelism onto the jvm, and you can use either java or scala with the akka libraries. Getting started with a spray web service using json jun 22 20. Akka reusable functionality and scala spray functionalitytemplate for general use. Net embraces distributed computing and makes the fallibility of communication explicit through message passing, therefore it does not try to lie and emulate a leaky abstraction.
Jsonformat sealed trait serviceapi object serviceapi extends spray. This guide introduces akka by describing the scala version of the hello world example. In your application you typically provide an nf in which you override akka andor spray settings according to your needs. Without any surprises, our akka code snippets below will be making use of scala. The same container can be run locally, as well as on production on a large scale. I am deeply into spay now and it is an awesome framework. Although theres already good looking sprayswagger, its annotation based approach seems too verbose sometimes. An akka streams microservice in scala a weave of tech and time. In essence, it takes a declarative approach to constructing composable data transformations over streaming data sources. Akka s actors and finitestate machine were a natural way to model a ussd menu a series of stateful interactions between a subscriber and the ussd gateway. It also comes with a powerful cli tool to easily manage, scale and configure.
This repository contains the sources of an older version of spraycan targeted at scala 2. Education carnegie mellon university pittsburgh, pennsylvania. For the purpose of this akka tutorial, we will be using the latest version which is currently 2. How to do the session management with spray akka scala. This application shows how to build akka application with spray api. Using the actor model we raise the abstraction level and provide a better platform to build correct concurrent and scalable applications. In this example well create a docker image running a simple rest server implemented using the excellent spray toolkit, which itself is based on akka and implemented in scala. The project aims to make mouse and keyboard monitoring easy on windows and linux. To help you get going we created the spraytemplate project on github. The source code is available on the allaboutscala github repository. Source code for this post is at the scalasamplesakka github repository in the akka folder. Spray server in a docker container blog of adam warski. The project aims to make mouse and keyboard monitoring easy on. Chester chen director, data science engineering gopro.
Spray akkas routing dsl is the best among the existing frameworklibraries imo, however, its cascaded and mixed routing structure makes automated documentation and code generation somewhat difficult. The streams are processed in a nonblocking manner using a reactive approach to flow control that asynchronously communicates capacity between the connected sources and sinks. This scala tutorial is a step by step beginners guide where you will learn how to. This article describes how to efficiently exploit spray to create a simple. The server spraybased the sources of the project can be found on github. If you are looking to contribute back to akka, the contributing. Create an application and include routes to expose an api to.
Mar 07, 2016 spray is a library written on top of akka and scala that allows to quickly create rest interfaces. Building a fully functional rest service using akka actors medium. Build highly concurrent, distributed, and resilient. Just like akka spraycan relies on the typesafe config library for configuration. Cloudflow integrates with popular streaming engines like akka, spark and flink. To password spray a cisco web vpn service, a target portal or server hosting a portal must be provided. As such its jar contains a nf file holding the default values of all configuration settings. It puts akka and scalas asynchronous programming model first for high performance, composable application development. Websockets are sockets that can be used from a web browser based on a protocol that allows two way full duplex communication. The m8 release of spray is significantly faster since it is based on the new actorbased akka io core. The %% is for automatically using the right scala version of the library. And they may change some more as the current release is a milestone 1. Project built with the following main technologies.
On the mysteriously fast spraycan webserver xebia blog. Toolkit for building concurrent distributed and fault tolerant apps. It transforms streaming events and extract patterns from data via restful apis. How to do the session management with sprayakkascala. The truth about mobile phone and wireless radiation dr devra davis duration. Moreover, running the containers is fast, and has little overhead, in terms of memory, cpu and disk space. Testkit can also be used to test your own userdefined actors too. Boot rootpath rest requesttimeout 10s change class boot to extend webboot. A suite of scala libraries for building and consuming restful web services on top of akka. Analyzing java garbage collection logs for debugging and optimizing apache spark jobs 10 minute read recently while trying to make peace between apache parquet, apache spark and amazon s3, to write data from spark jobs, we were running into recurring issues. Akka is open source and available under the apache 2 license.
The application is very focused and provides means for a customer to be added, removed. Akka streams as is a stream processing framework built on akka. It is becoming more and more popular in the scala community because it is easy to use and performant thanks to this asynchronous, actorbased model. Analyzing java garbage collection logs for debugging and. Spray is a great library for building apis with scala. Tell us what operating system youre using so we can adapt the installation instructions to your environment.
1489 421 1530 576 1225 1437 1216 174 825 351 70 1327 1634 146 1186 1346 647 216 887 1480 938 253 434 1301 34 27 1111 914 1295 354