Configure channel in Java app

Javonet allows you to reference and use modules or packages written in (Java/Kotlin/Groovy/Clojure, C#/VB.NET, Ruby, Perl, Python, JavaScript/TypeScript) like they were created in your technology. If you have not yet created your first project, check Javonet overview and quick start guides for your technology. Javonet enables configuring the communication channel with foreign runtimes via a configuration file. Each runtime section (jvm, netcore, nodejs, python, ruby, clr, perl) can be configured independently with one of the supported channel types:

In-Memory Channel – high-performance, within-process communication
TCP Channel – for inter-process or remote communication over TCP
WebSocket Channel – ideal for browser-based or cross-platform communication

Example configuration file with all three channel types:

{
  "licenseKey": "your-license-key",
  "runtimes": {
    "jvm": [
      {
        "name": "default",
        "customOptions": "",
        "modules": "",
        "channel": {
          "type": "inMemory"
        }
      }
    ],
    "netcore": [
      {
        "name": "default",
        "customOptions": "",
        "modules": "",
        "channel": {
          "type": "tcp",
          "host": "127.0.0.1",
          "port": 8080
        }
      }
    ],
    "nodejs": {
      "name": "default",
      "customOptions": "",
      "modules": "",
      "channel": {
        "type": "webSocket",
        "host": "wss://127.0.0.1:443/ws",
        "port": 0
      }
    }
  }
}

To use this file, load it using:

import com.javonet.sdk.*;

public class SampleProgram {

    private static final String resourcesDirectory = ".";
    public static void main(String []args) {

        // use Activate only once in your app
        Javonet.activate(ActivationCredentials.yourLicenseKey);
        
        // set up variables
        String configFilePath = resourcesDirectory + "/channel-tests-config.json";
        ConfigRuntimeFactory communicationChannel = Javonet.withConfig(configFilePath);
        // use communicationChannel to create runtimes to interact with
     }
}// use Activate only once in your app
Javonet.activate(ActivationCredentials.yourLicenseKey);

// set up variables
String configFilePath = resourcesDirectory + "/channel-tests-config.json";
ConfigRuntimeFactory communicationChannel = Javonet.withConfig(configFilePath);
// use communicationChannel to create runtimes to interact with

You can configure the communication channel in Java app in many different ways using Javonet.withConfig(...). Instead of providing only a configuration file path, you can also pass:

Java object – representing the configuration structure directly in code
JSON string – containing the configuration as a raw JSON-formatted string

This flexibility allows seamless integration regardless of your runtime environment. You can use configuration from a file, a Java object, or a JSON string depending on your use case. Below you can see a code example demonstrating how to load configuration from Java object source.

import com.javonet.sdk.*;

public class SampleProgram {

    private static final String resourcesDirectory = ".";
    public static void main(String []args) {

        // Configuration channel object is not yet supported in Java.
     }
}// Configuration channel object is not yet supported in Java.

Configure channel in Java app

Additional references