Java

Introduction

You can use the LocalStack SDK for Java to develop Java applications that interact with the LocalStack platform and internal developer endpoints. The SDK extends the REST API, offering an object-oriented interface for easier use.

The LocalStack SDK for Java currently supports these features:

• Save, list, load, and delete Cloud Pods.
• Manage fault configurations for the Chaos API.

Installation

The best way to use the LocalStack SDK for Java in your project is to consume it from Maven Central. You can use Maven to import the entire SDK into your project.

<dependency>
    <groupId>cloud.localstack</groupId>
    <artifactId>localstack-sdk</artifactId>
    <version>0.0.1</version>
</dependency>

Similarly, you can copy the following line in the dependencies block of your build.gradle(.kts) file, if you are using Gradle as a build tool.

implementation("cloud.localstack:localstack-sdk:0.0.1")

Quick Start

Currently, the LocalStack SDK for Java only supports Chaos and Cloud Pods APIs. Both these features have a client that can be instantiated from the cloud.localstack.sdk.chaos and cloud.localstack.sdk.pods package, respectively.

The clients accept requests built by using the builder pattern. For instance, let us imagine the case in which you want to add a fault rule for S3 on the us-east-1 region. You first need to use the FaultRuleRequest class to build a fault rule request. Then, you need to pass such a request object to the addFaultRules method of a created ChaosClient.

import cloud.localstack.sdk.chaos.ChaosClient;
import cloud.localstack.sdk.chaos.requests.FaultRuleRequest;

var client = new ChaosClient();
var faultRuleRequest = new FaultRuleRequest.Builder().faultRule("s3", "us-east-1").build();
var addedRules = client.addFaultRules(request);

As a second example, let us look at the necessary code to save and load a Cloud Pod. Similarly to the ChaosClient, the PodsClient exposes two functions, savePod and loadPod, which expect a SavePodRequest and a LoadPodRequest, respectively. The resulting code is the following:

import cloud.localstack.sdk.pods.PodsClient;
import cloud.localstack.sdk.pods.requests.LoadPodRequest;
import cloud.localstack.sdk.pods.requests.SavePodRequest;

var podsClient = new PodsClient();
// save a cloud pod
var saveRequest = new SavePodRequest.Builder().podName(POD_NAME).build();
podsClient.savePod(saveRequest);

//load a cloud pod
var loadRequest = new LoadPodRequest.Builder().podName(POD_NAME).build();
podsClient.loadPod(loadRequest);