hosted web application in existing environments

[Rene Ummels]

Hi,

 

Is it possible to run Node.js code in existing systems where web container Application Server is Jetty or Weblogic?

If so, how? Maybe with Nodyn (http://www.javaworld.com/article/2104441/enterprise-application-integration/node-js-arrives-for-the-jvm.html)?

Or do we then need to redesign the Node.js code to Java/JEE and JSP code?

 

 

thanks,

Rene

 

[Aria Stewart]

All the node-like environments (nodyn, vert.x) are ports or emulations; your mileage may vary.

You can also start the node process as an external process and proxy to it over HTTP.

You can use a worker and job queue system to communicate with node processes, especially if you start a service-oriented architecture.

You can have Node be a proxy to your other application, running as an app server along side of your Java app server.

You can integrate purely through a load balancer or front-end proxy, if your apps don't need to talk to each other, just be merged into a cohesive whole.

It really depends on WHAT you're doing. Node doesn't even imply 'web', so knowing what you're doing would be easier to give specific answers for.

Aria

[Angel Java Lopez]

I prefer Node.js alone, with communication with JVM world, as pointed by Aria

Another link, I never tried it, for Java 8

http://blog.jonasbandi.net/2014/03/running-nodejs-applications-on-jvm-with.html

Nashorn and Avatar

Angel "Java" Lopez

@ajlopez

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[Rene Ummels]

Hi Aria,

 

Let me shortly explain what I try to achieve:

A client connects to our application, a TCP connection is then set up and kept open. At some point in time the client sends data to the application; this triggers the

application to update the database and also to send new data (binary/JSON/MQTT) back to the client.

Later on in our project we will change from TCP to HTTP-REST.

Do you need more info?

 

Do I understand correctly that you for instance propose to design a Proxy in our Application Server and that this Proxy connects to external node containing the Node.js application?

 

///Rene

 

[Aria Stewart]

That is one option. Not a bad one if the java application is not legacy.


I think I would probably make node the outer layer -- write a TCP protocol handler with node, and have it pass data to the existing application. Start building REST API using node. But I have a strong bias for doing things in node.

I would probably not integrate node with the application server -- I would deploy using ndm or forever or pm2 -- and just run the app next to Java, not inside or started by it.

Are there deployment constraints you're trying to work around?

[Rene Ummels]

The main deployment constraint is it is expected we handle communication with clients by the Application Server.

 

///Rene

 

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