Create an application and include routes to expose an api to. Akka reusable functionality and scala spray functionalitytemplate for general use. How to build a rest api with spray and akka daniela sfregola. Looks like that youve replied not with a class instance, but with a partiallyapplied success. Hi im trying the typesafes activatorakkaspray, but unfortunately cannot see what happens when i run it, it gives me several messages like that. However, im not an expert in scala so i couldnt understand the examples very well as i wish. Contribute to spray akka development by creating an account on github. A suite of scala libraries for building and consuming restful web services on top of akka. Sign in sign up instantly share code, notes, and snippets. Source code for this post is at the scalasamplesakka github repository in the akka folder. The overflow blog how to develop a defensive plan for your opensource software project.
This guide introduces akka by describing the scala version of the hello world example. I cant see one reason to use multiple actor systems. Once everything is done well pack it all into a docker container. Mar 07, 2016 how to build a rest api with spray and akka february 23, 2015 march 7, 2016 daniela sfregola spray is a library written on top of akka and scala that allows to quickly create rest interfaces. November 2015 implemented basic functionalities of user using spray can framework and akka actors with secure client server communication based on rsa2048 pk cryptology and aes256. It puts akka and scalas asynchronous programming model first for high performance, composable application development.
To do this properly you dont want to hold the whole file in memory or save it to disk. Gossip type algorithms can be used both for group communication and for aggregate computation. I have experience in backend development in banking, tourism, gambling, ecommerce and logistics. Jun 24, 2015 running akka applications jun 24, 2015 with akka becoming more and more popular, akka kernel being deprecated, docker rocking the word, typesafe releasing conductr and more folks getting to scala, i wanted to write a post about how to run akka applications. Browse other questions tagged java scala akka spray xsbtwebplugin or ask your own question. Contribute to icha024spray cloudant development by creating an account on github. The release backports some apis to make it easier to write libraries that work with 2. This time we will be looking at akka s support for.
Net is a radically different way of developing concurrent and networked applications in. Just like akka spraycan relies on the typesafe config library for configuration. Its asynchronous, uses akka actors and has a great if. Aws elastic load balancer, amazon cloudfront, route 53, atlassian jira, cloudflare, crashlytics. Built on akka, play provides predictable and minimal resource consumption cpu, memory, threads for highlyscalable applications. Spray is a library written on top of akka and scala that allows to quickly create rest interfaces. What sometimes you have a need to receive or send large files in chunks. As it says the benchmark server was doing json serialization without db access, it was probably similar to the above akkauser discussion. Its a sort of limbo for people who need to decide what to pick for their projects. The project aims to make mouse and keyboard monitoring easy on windows and linux. Nov 16, 2016 last time we talked about routing within akka. Akka remoting is what allows for one actor to speak to another actor on a different machine.
November 2015 implemented basic functionalities of user using spraycan framework and akka actors with secure client server communication based on rsa2048 pk cryptology and aes256. Also there is a spray team blog entry which shows its performance. Sbt template project for quickly getting started with sprayserver. Building on the principles of the reactive manifesto akka allows you to write systems that selfheal and stay responsive in the face of failures.
Being asynchronous, actorbased, fast, lightweight, modular and testable its a great way to connect your scala applications to the world. Vagrant with ansible will take care of our environment and. Api will be restful json provided by spray and akka. Windows api posix lua programming language language binding java programming language.
For highperformance use, there are native drivers for. As such its jar contains a nf file holding the default values of all configuration settings. Step 2 setting up the project to use the cinnamon agent i have cloned this simple akkascala application from github to demonstrate functioning of telemetry. This article tries to provide one possible approach to building microservices. But what attracted me to this solution was that overall, the number of threads is greatly reduced, as spray, akka and the async mysql library all use the same execution context. As it says the benchmark server was doing json serialization without db access, it was probably similar to the above akka user discussion. Akka is a toolkit and runtime for building highly concurrent, distributed, and faulttolerant eventdriven applications on the jvm. Running on my windows development machine, tomcat has.
In theory this should make no difference to performance, because spray is nio just as tomcat 8 is, out of the box. Play is based on a lightweight, stateless, webfriendly architecture. Microservices development with scala, spray, mongodb. 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. Ideally, you would use a stream that processes that file in chunks as its being read or written. Petabridges team members and solution architects will work handson with your team to ensure smooth sailing for your application by the time its ready for production, using our years of experience working with akka. I like functional programming and computer science in general. I had this need at work and it was hard to find good examples of this done in python with flask since thats what our machine. Chaining akka actors in a spray route scala,akka,actor,spray i have a restful api that receives an array of json messages that will be converted to individual avro messages and then sent to kafka. Net, and so its important to have a number of high quality reference applications developers can explore in order to better understand how to design and model software using actors and akka. Actors and streams let you build systems that scale up, using the resources of a server more efficiently, and out, using multiple servers resilient by design. Monitoring akka based applications with cinnamon and. I am trying to understand if my approach is at all valid or if there is a better way to approach this problem. Akka is open source and available under the apache 2 license.
Net, akka and erlang high availability event store can run as a cluster of nodes containing the same data, which remains available for writes provided at least half the nodes are alive and connected. This article describes how to efficiently exploit spray to create a simple. Windows subsystem for linux 2 moving into general availability with improved. Running on my windows development machine, tomcat has over 30 threads compared to just a few over 10 for the solution built here, or compared to websphere or jboss where there are hundreds of threads.
Jan machacek demos creating and using reactive apis in scala with spray and akka. And they may change some more as the current release is a milestone 1. In your application you typically provide an nf in which you override akka andor spray settings according to your needs. Getting started with a spray web service using json jun 22 20. Contribute to hongjiangsqubs development by creating an account on github. Here is my handson approach to introduce the ecosystem around the scala programming language the sequence of information and examples here has been handcrafted based on various other tutorials. Boot a microservice utilising functionality built on top of spray. If you are looking to contribute back to akka, the contributing. Net, windows azure, amazon web services, and other technologies.
But well take a look at some basics as things currently stand. Scala is a very powerful language and akka is my favourite framework for building message driven jvm applications. Just like akka spray can relies on the typesafe config library for configuration. For akka remoting to work you need to know the specific ip address or hostname, actorsystem name, and actor path of the actor you want to talk to. The project aims to make mouse and keyboard monitoring easy on windows.
Microservices development with scala, spray, mongodb, docker. Contribute to akkaakka development by creating an account on github. Build highly concurrent, distributed, and resilient. Akka is the implementation of the actor model on the jvm. With akka becoming more and more popular, akka kernel being deprecated, docker rocking the word, typesafe releasing conductr and more folks getting to scala, i wanted to write a post about how to run akka applications. Jan 29, 2018 what sometimes you have a need to receive or send large files in chunks. To help you get going we created the spraytemplate project on github. 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. Scala spray akka dart this is a very rudimentary applicationill eventually turn it into a giter8 templatethat is intended to demonstrate how to get scala spray akka to work nicely with dart. Akka applications arent servlet applications java developers are used to, normally those are main class applications in a jar file and have other jars as dependencies.
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