Vers Java API Library

This library provides convenient access to the Vers REST API from Java.

It is generated with Sterling.

Installation

Maven

<dependency>
    <groupId>com.vers</groupId>
    <artifactId>vers-sdk</artifactId>
    <version>0.1.8</version>
</dependency>

Gradle

implementation 'com.vers:vers-sdk:0.1.8'

Usage

import com.vers.sdk.VersClient;

public class Example {
    public static void main(String[] args) throws Exception {
        VersClient client = new VersClient(
            "https://api.vers.sh",  // or set VERS_BASE_URL env var
            "your-api-key"   // or set VERS_API_KEY env var
        );

        // List all VMs
        var response = client.listVms(null, null);
        System.out.println(response.body());

        // Create a new root VM
        var vm = client.createNewRootVm(java.util.Map.of("vm_config", java.util.Map.of()), null);
        System.out.println(vm.body());

        client.close();
    }
}

Configuration

import com.vers.sdk.VersClient;
import java.time.Duration;

VersClient client = new VersClient(
    "https://api.vers.sh",       // base URL
    "your-api-key",       // API key
    2,                    // max retries
    Duration.ofSeconds(30), // timeout
    null                  // optional custom HttpClient
);

Error handling

import com.vers.sdk.Errors.*;

try {
    client.deleteVm("nonexistent-id", null);
} catch (NotFoundError e) {
    System.out.println("Not found: " + e.getStatus() + " " + e.getMessage());
} catch (APIError e) {
    System.out.println("API error: " + e.getStatus());
}

Retries

Requests are automatically retried up to 2 times on 5xx errors and connection failures, with exponential backoff and jitter. The client respects Retry-After headers (capped at 60s).

Per-request options

import com.vers.sdk.RequestOptions;
import java.time.Duration;

RequestOptions options = new RequestOptions()
    .addHeader("X-Custom-Header", "value")
    .setTimeout(Duration.ofSeconds(60));

client.listVms(null, options);

Requirements

• Java 11+
• Jackson Databind

License

MIT