Example.java

/*
 * Copyright (c) HashiCorp, Inc.
 * SPDX-License-Identifier: MPL-2.0
 */

package com.hashicorp.quickstart;

import java.util.Map;
import java.util.HashMap;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.CommandLineRunner;
import org.springframework.context.ConfigurableApplicationContext;

import org.springframework.vault.authentication.TokenAuthentication;
import org.springframework.vault.client.VaultEndpoint;
import org.springframework.vault.support.Versioned;
import org.springframework.vault.core.VaultTemplate;

@SpringBootApplication
public class Example implements CommandLineRunner {
    public static void main(String[] args) {
        ConfigurableApplicationContext context = SpringApplication.run(Example.class, args);
        context.close();
    }

    @Override
    public void run(String... strings) throws Exception {
        VaultEndpoint vaultEndpoint = new VaultEndpoint();

        vaultEndpoint.setHost("127.0.0.1");
        vaultEndpoint.setPort(8200);
        vaultEndpoint.setScheme("http");

        // Authenticate
        VaultTemplate vaultTemplate = new VaultTemplate(
                vaultEndpoint,
                new TokenAuthentication("dev-only-token"));

        // Write a secret
        Map<String, String> data = new HashMap<>();
        data.put("password", "Hashi123");

        Versioned.Metadata createResponse = vaultTemplate
                .opsForVersionedKeyValue("secret")
                .put("my-secret-password", data);

        System.out.println("Secret written successfully.");

        // Read a secret
        Versioned<Map<String, Object>> readResponse = vaultTemplate
                .opsForVersionedKeyValue("secret")
                .get("my-secret-password");

        String password = "";
        if (readResponse != null && readResponse.hasData()) {
            password = (String) readResponse.getData().get("password");
        }

        if (!password.equals("Hashi123")) {
            throw new Exception("Unexpected password");
        }

        System.out.println("Access granted!");
    }
}