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Garmin Pay Java Library

Official Garmin Pay Java SDK

Overview

The Garmin Pay SDK is a direct link to the Garmin Pay platform and allows bank issuers to easily provision a users card directly to a Garmin Pay wallet. This SDK is intended to be used in Direct Push Provisioning scenarios and will return a deeplink for iOS and Android clients which can be used to have users finish the provisioning process in the Garmin Connect Mobile app. The deeplink sends a user to the Garmin Connect Mobile app where they will then have their card added to the wallet.

It is important to note that oAuth and payload encryption are abstracted away by the SDK. Anytime the checkHealthStatus or registerCard methods are called oAuth tokens to authenticate with Garmin Pay services are generated or used if previously generated. Anytime registerCard is called with a card, the card is encrypted securely to be sent to Garmin Pay.

Onboarding

Please contact Garmin for onboarding instructions for your use case.

Installation

Requirments

  • Java 1.8 or later

Gradle

implementation "garminpay:garminpay-java:1.0.2"

Maven

<dependency>
  <groupId>garminpay</groupId>
  <artifactId>garminpay-java</artifactId>
  <version>1.0.2</version>
</dependency>

Others

Manually install the JAR

Usage

Initialize Garmin Pay

GarminPayExample.java

import com.garminpay.GarminPayClient;

public class GarminPayExample {
    
    public static void main(String[] args) {
        // Create GarminPayClient with default HttpClient
        GarminPayClient client = new GarminPayClient("clientId", "clientSecret");
        ...
    }
}

Initialize Garmin Pay with custom HttpClient

This SDK allows for users to customize their own HttpClient for proxying and request configuration. We use Apache HttpClient.

GarminPayExample.java

import com.garminpay.GarminPayClient;
import org.apache.hc.client5.http.classic.HttpClient;
import org.apache.hc.client5.http.impl.classic.HttpClients;
import org.apache.hc.core5.http.HttpHost;

public class GarminPayExample {

    public static void main(String[] args) {
        // Proxy settings
        String proxyHost = "your.proxy.host";
        int proxyPort = 8080;

        // Create proxy HTTP host
        HttpHost proxy = new HttpHost(proxyHost, proxyPort);

        // Create HttpClient with proxy configuration
        HttpClient httpClient = HttpClients.custom()
            .setProxy(proxy)
            .build();

        // Create GarminPayClient with custom HttpClient
        GarminPayClient client = new GarminPayClient("clientId", "clientSecret", httpClient);
        ...
    }
}

Bean initialization

Initializing Garmin Pay as a Spring Bean may also be beneficial for your uses.

GarminPayConfigExample.java

import com.garminpay.GarminPayClient;
import com.garminpay.exception.GarminPayBaseException;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Slf4j
@Configuration
public class GarminPayConfigExample {

    @Bean
    public GarminPayClient garminPayClient() {
        log.debug("Creating GarminPayClient");
        try {
            return new GarminPayClient("clientId", "clientSecret");
        } catch (IllegalArgumentException e) {
            // Handle this exception how you see fit
            log.warn("Failed to create GarminPayClient", e);
            e.printStackTrace();
            ...
        }
    }
}

Note: Note: if the client credentials are null or empty, an IllegalArgumentException will be thrown when the client is initialized. Otherwise, the provided credentials will be validated on the first request made to the Garmin Pay platform; not during client initialization.

Checking the health of the Garmin Pay platform

The checkHealthStatus method will return a boolean representing the status of the Garmin Pay platform.

CheckHealthExample.java

public class CheckHealthExample {
    public static void main (String[] args) {
        ...
        // Check health of GarminPay platform
        if (client.checkHealthStatus()) {
            // Register card
        } else {
            // Handle when GP platform is down
        }
        ...   
    }
}

Registering a card

The registerCard method takes in a GarminPayCardData object that is the card information that should be provisioned. It also takes a callbackUrl URI object that will be used to return to the issuer app after GCM has attempted provisioning.

RegisterCardExample.java

import java.net.URI;

public class RegisterCardExample {

    public static void main(String[] args) {
        ...
        // Create Address object
        Address garminPayAddress = Address.builder()
            .name(...)
            .street1(...)
            .street2(...)
            .street3(...)
            .city(...)
            .state(...)
            .postalCode(...)
            .countryCode(...)
            .build();

        // Create GarminPayCardData object
        GarminPayCardData garminPayCardData = GarminPayCardData.builder()
            .pan(...)
            .cvv(...)
            .expMonth(...)
            .expYear(...)
            .name(...)
            .address(garminPayAddress).build();

        URI callbackUrl = URI.create("https://callback.com");

        // registerCard with Garmin Pay platform
        RegisterCardResponse response = client.registerCard(garminPayCardData, callbackUrl);
        ...
    }
}

The GarminPayCardData object requires that the pan field be present. The SDK allows for all other fields to be optional. However, by not providing critical information such as cvv and expiration dates, the card network may reject the provision request.

The RegisterCardResponse objects returns a deepLinkUrl to Garmin Connect Mobile (GCM) for both iOS and Android as well as the corresponding pushId, or it will throw a relevant exception.

RegisterCardResponse Example

{
  "deepLinkUrl": "https://connect.garmin.com/payment/push-to-wallet/paymentcard?pushToken=eyJraWQiOiJhcm46YXdzOmttczp1cy1lYXN0LTE6MTU2NDk0MzM0MDUwOmtleVwvOWQ2Yjg3MDItMzJhZi00ZGQwLTkxNDYtMDNkNDUwZDlkMmZhIiwidHlwIjoiSldUIiwiYWxnIjoiRVM1MTIifQ.eyJwdXNoSWQiOiI1Y2M0OGU3OS1hZTI5LTRlODUtYWMxMi02YjdiMDVjNzkwZWUifQ.MIGHAkE1_siLz8_SfIwCa7a4__4ROBwxQJ7zHxmpzaeo1DsvBfr6f6tRsvlhY74kt57scEfzjVGbhJvIhZy1dU9f2crCfgJCAREugeV_gsQrsvCRjvEyWZHxd81QkQZ4BzdqdLSuWHPOSCSkp-CL1H8QySZGDSWS5R5KUEZTBj1a4gBHWf8uFa-F&callbackURL=https%3A%2F%2Ftest.com%3FpushId%3D5cc48e79-ae29-4e85-ac12-6b7b05c790ee",
  "pushId": "3D5cc48e79-ae29-4e85-ac12-6b7b05c790ee"
}

Note that the deepLinkUrl has appended the callbackUrl that was passed in as a parameter in the registerCard method with the pushId appended to the callbackUrl

Handling Maintenance Mode

Any request made through the SDK may return a response signaling that the platform is undergoing maintenance. If this happens, the SDK will throw a GarminPayMaintenanceException.

CheckHealthAndMaintenanceExample.java

public class CheckHealthExample {
    public static void main(String[] args) {
        ...
        try {
            client.checkHealthStatus();
        } catch (GarminPayMaintenanceException e) {
            // Handle GP platform maintenance mode
        }
        ...
    }
}

Maintenance

Adding license header to each file

If the License Check job fails due to a missing license header, you can add the license header to each file by running the following command:

mvn license:format

You can remove license headers from files by running the following command:

mvn license:remove

Set up IntelliJ to auto-add license header to all new files

  1. Navigate to Intellij IDEA -> Settings -> Editor -> Copyright
  2. Change the Default project copyright to "Garmin Pay Software License Agreement"