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https://github.com/spring-projects/spring-vault

Provides familiar Spring abstractions for HashiCorp Vault
https://github.com/spring-projects/spring-vault

encryption framework java secrets security spring vault

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Provides familiar Spring abstractions for HashiCorp Vault

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README 

        
= Spring Vault



Spring Vault provides client-side support for accessing, storing and revoking secrets.

With https://www.vaultproject.io[HashiCorp's Vault] you have a central place to manage external secret data for applications across all environments.

Vault can manage static and dynamic secrets such as application data, username/password for remote applications/resources and provide credentials for external services such as MySQL, PostgreSQL, Apache Cassandra, Consul, AWS and more.



== Getting Help



For a comprehensive treatment of all the Spring Vault features, please refer to:



* the https://docs.spring.io/spring-vault/reference/[User Guide]

* the https://docs.spring.io/spring-vault/docs/current/api/[JavaDocs] have extensive comments in them as well.

* the home page of https://projects.spring.io/spring-vault[Spring Vault] contains links to articles and other resources.

* for more detailed questions, use https://stackoverflow.com/questions/tagged/spring-vault[Spring Vault on Stackoverflow].



== Features



Specifically for Spring applications:



* JavaConfig for Vault Client

* Retrieve secrets from Vault and initialize Spring Environment with remote property sources

* Obtain https://docs.spring.io/spring-vault/reference/vault/client-support.html#vault.client-ssl[secrets] secured with SSL

* https://docs.spring.io/spring-vault/reference/vault/authentication.html#vault.authentication.token[Token],

https://docs.spring.io/spring-vault/reference/vault/authentication.html#vault.authentication.appid[AppId],

https://docs.spring.io/spring-vault/reference/vault/authentication.html#vault.authentication.approle[AppRole],

https://docs.spring.io/spring-vault/reference/vault/authentication.html#vault.authentication.clientcert[Client Certificate],

https://docs.spring.io/spring-vault/reference/vault/authentication.html#vault.authentication.cubbyhole[Cubbyhole], and

https://docs.spring.io/spring-vault/reference/vault/authentication.html#vault.authentication.awsec2[AWS-EC2] authentication

* Bootstrap application context: a parent context for the main application that can be trained to do anything



Spring Boot users can benefit from https://github.com/spring-cloud/spring-cloud-vault-config[Spring Cloud Vault Config], an optimized integration with Vault to provide encrypted Vault properties inside Spring Boot applications.

https://github.com/spring-cloud/spring-cloud-vault-config[Spring Cloud Vault] can also generate credentials for various services like MySQL, PostgreSQL, MongoDB and much more.



== Quick Start



=== Maven configuration



Add the Maven dependency:



====

[source,xml]

----



  org.springframework.vault

  spring-vault-core

  ${version}



----

====



If you'd rather like the latest snapshots of the upcoming major version, use our Maven snapshot repository and declare the appropriate dependency version.



====

[source,xml]

----



  org.springframework.vault

  spring-vault

  ${version}-SNAPSHOT



  spring-snapshot

  Spring Snapshot Repository

  https://repo.spring.io/snapshot



----

====



=== Vault Setup



*Prerequisites*



To get started with Vault and this guide you need a *NIX-like operating systems that provides:



* `curl`, `openssl` and `unzip`

* at least Java 8 and a properly configured `JAVA_HOME` environment variable



[NOTE]

--

If you use Windows Subsystem for Linux (WSL) you have to share `JAVA_HOME` between WSL and Windows. Call following command in PowerShell:

----

$ setx WSLENV "JAVA_HOME/p"

----

--



*Install Vault*



----

$ src/test/bash/install_vault.sh

----



*Create SSL certificates for Vault*



----

$ src/test/bash/create_certificates.sh

----



NOTE: `create_certificates.sh` creates certificates in `work/ca` and a JKS truststore `work/keystore.jsk`.

If you want to run Spring Vault using this quickstart guide you need to configure the truststore to `file:work/keystore.jks`.



*Start Vault server*



----

$ src/test/bash/local_run_vault.sh

----



Vault is started listening on `0.0.0.0:8200` using the `inmem` storage and

`https`.

Vault is sealed and not initialized when starting up so you need to initialize it first.



----

$ cd vault

$ export VAULT_ADDR="https://localhost:8200"

$ export VAULT_SKIP_VERIFY=true # Don't do this for production

$ ./vault operator init

----



You should see something like:



----

Key 1: 7149c6a2e16b8833f6eb1e76df03e47f6113a3288b3093faf5033d44f0e70fe701

Key 2: 901c534c7988c18c20435a85213c683bdcf0efcd82e38e2893779f152978c18c02

Key 3: 03ff3948575b1165a20c20ee7c3e6edf04f4cdbe0e82dbff5be49c63f98bc03a03

Key 4: 216ae5cc3ddaf93ceb8e1d15bb9fc3176653f5b738f5f3d1ee00cd7dccbe926e04

Key 5: b2898fc8130929d569c1677ee69dc5f3be57d7c4b494a6062693ce0b1c4d93d805

Initial Root Token: 19aefa97-cccc-bbbb-aaaa-225940e63d76



Vault initialized with 5 keys and a key threshold of 3. Please

securely distribute the above keys. When the Vault is re-sealed,

restarted, or stopped, you must provide at least 3 of these keys

to unseal it again.



Vault does not store the master key. Without at least 3 keys,

your Vault will remain permanently sealed.

----



Vault will initialize and return a set of unsealing keys and the root token.

Pick 3 keys and unseal Vault.



----

$ ./vault operator unseal (Key 1)

$ ./vault operator unseal (Key 2)

$ ./vault operator unseal (Key 3)

----



Vault is now initialized and unsealed.



=== Using VaultTemplate



The class VaultTemplate, located in the package org.springframework.vault.core, is the central class of the Spring’s Vault support providing a rich feature set to interact with Vault.

The template offers convenience operations to read, write and delete data in Vault and provides a mapping between your domain objects and Vault data.



You can have Spring initializing Spring Vault by providing a JavaConfig:



====

[source,java]

----

@Configuration

public class AppConfig extends AbstractVaultConfiguration {



    /**

     * Specify an endpoint for connecting to Vault.

     */

    @Override

    public VaultEndpoint vaultEndpoint() {

        return new VaultEndpoint();

    }



    /**

     * Configure a client authentication.

     * Please consider a more secure authentication method

     * for production use.

     */

    @Override

    public ClientAuthentication clientAuthentication() {

        return new TokenAuthentication("…");

    }

}

----

====



and then use `VaultTemplate` through its interface `VaultOperations`:



====

[source,java]

----

public class MyApp {



    @Autowired VaultOperations vaultOperations;



    public void useVault() {



        Secrets secrets = new Secrets();

        secrets.username = "hello";

        secrets.password = "world";



        vaultOperations.write("secret/myapp", secrets);



        VaultResponseSupport response = vaultOperations.read("secret/myapp", Secrets.class);

        System.out.println(response.getData().getUsername());



        vaultOperations.delete("secret/myapp");

    }

}

----

====



=== @VaultPropertySource



`@VaultPropertySource` provides a convenient and declarative mechanism for adding a `PropertySource` to Spring’s `Environment`.



To be used in conjunction with @Configuration classes.

Example usage



Given a Vault path `secret/my-application` containing the configuration data pair `database.password=mysecretpassword`, the following `@Configuration`

class uses `@VaultPropertySource` to contribute `secret/my-application` to the `Environment`'s set of `PropertySources`.



====

[source,java]

----

@Configuration

@VaultPropertySource("secret/my-application")

public class AppConfig {



    @Autowired Environment env;



    @Bean

    public TestBean testBean() {

        TestBean testBean = new TestBean();

        testBean.setPassword(env.getProperty("database.password"));

        return testBean;

    }

}

----

====



== Building



==== Build requirements for Vault



Spring Vault requires SSL certificates and a running Vault instance listening on `localhost:8200`.

Certificates and the Vault setup are scripted, the scripts are located in `src/test/bash`.



The following scripts need to be run prior to building the project for the tests to pass.



    $ ./src/test/bash/install_vault.sh

    $ ./src/test/bash/create_certificates.sh

    $ ./src/test/bash/env.sh

    $ ./src/test/bash/local_run_vault.sh



Alternatively you can run



----

$ ./src/test/bash/start.sh

----



Changes to the documentation should be made to the adocs found under `src/main/asciidoc/`



=== Basic Compile and Test



To build the source you will need to install JDK 1.6.



Spring Vault uses Maven for most build-related activities, and you should be able to get off the ground quite quickly by cloning the project you are interested in and typing



----

$ ./mvnw install

----



NOTE: You can also install Maven (>=3.3.3) yourself and run the `mvn` command in place of `./mvnw` in the examples below.

If you do that you also might need to add `-P spring` if your local Maven settings do not contain repository declarations for spring pre-release artifacts.



NOTE: Be aware that you might need to increase the amount of memory available to Maven by setting a `MAVEN_OPTS` environment variable with a value like `-Xmx512m -XX:MaxPermSize=128m`.

We try to cover this in the `.mvn` configuration, so if you find you have to do it to make a build succeed, please raise a ticket to get the settings added to source control.



For hints on how to build the project look in `.travis.yml` if there is one.

There should be a "script" and maybe "install" command.

Also look at the "services" section to see if any services need to be running locally (e.g. mongo or rabbit).

Ignore the git-related bits that you might find in "before_install" since they're related to setting git credentials and you already have those.



NOTE: If all else fails, build with the command from `.travis.yml` (usually

`./mvnw install`).



=== Documentation



The module has a "distribute" profile, and if you switch that on it will try to build asciidoc sources from

`src/main/asciidoc`.



=== Working with the code



If you don't have an IDE preference we would recommend that you use

https://www.springsource.com/developer/sts[Spring Tools Suite] or

https://eclipse.org[Eclipse] when working with the code.

We use the

https://eclipse.org/m2e/[m2eclipe] eclipse plugin for maven support.

Other IDEs and tools should also work without issue as long as they use Maven 3.3.3 or better.



==== Importing into eclipse with m2eclipse



We recommend the https://eclipse.org/m2e/[m2eclipe] eclipse plugin when working with eclipse.

If you don't already have m2eclipse installed it is available from the "eclipse marketplace".



NOTE: Older versions of m2e do not support Maven 3.3, so once the projects are imported into Eclipse you will also need to tell m2eclipse to use the right profile for the projects.If you see many different errors related to the POMs in the projects, check that you have an up to date installation.

If you can't upgrade m2e, add the "spring" profile to your `settings.xml`.

Alternatively you can copy the repository settings from the "spring" profile of the parent pom into your `settings.xml`.



==== Importing into eclipse without m2eclipse



If you prefer not to use m2eclipse you can generate eclipse project metadata using the following command:



[indent=0]

----

	$ ./mvnw eclipse:eclipse

----



The generated eclipse projects can be imported by selecting `import existing projects`

from the `file` menu.



==== Importing into IntelliJ



In IntelliJ, choose `File --> Open` and select the `pom.xml` it will automatically detect it is a Maven project and starts downloading all necessary dependencies.



==== Formatting code (Spring Java Format)



The project uses https://github.com/spring-io/spring-javaformat[Spring Java Format] through the `spring-javaformat-maven-plugin`.

You can run `./mvnw spring-javaformat:apply` to reformat code.

Follow the instructions for https://github.com/spring-io/spring-javaformat#eclipse[Eclipse] or https://github.com/spring-io/spring-javaformat#intellij-idea[IntelliJ] to install a plugin to enable formatting in your favorite IDE.



== Contributing



Spring Vault is released under the non-restrictive Apache 2.0 license, and follows a very standard Github development process, using Github tracker for issues and merging pull requests into `main`.

If you want to contribute even something trivial please do not hesitate, but follow the guidelines below.



=== Sign the Contributor License Agreement



Before we accept a non-trivial patch or pull request we will need you to sign the

https://cla.pivotal.io/sign/spring[Contributor License Agreement].

Signing the contributor's agreement does not grant anyone commit rights to the main repository, but it does mean that we can accept your contributions, and you will get an author credit if we do.

Active contributors might be asked to join the core team, and given the ability to merge pull requests.



=== Code of Conduct



This project adheres to the Contributor Covenant https://github.com/spring-projects/.github/blob/3d965e94708a0014f0f9a2ab05bfc5eb6efef7e4/CODE_OF_CONDUCT.md[code of

conduct].

By participating, you are expected to uphold this code.

Please report unacceptable behavior to [email protected].



=== Code Conventions and Housekeeping



None of these is essential for a pull request, but they will all help.

They can also be added after the original pull request but before a merge.



* Spring Vault uses the Spring JavaFormat conventions.

Formatting is applied when running the build through `$ ./mvnw compile`

IDE plugins are available from https://github.com/spring-io/spring-javaformat.

* Make sure all new `.java` files to have a Javadoc class comment with at least an

`@author` tag identifying you, and preferably at least a paragraph on what the class is for.

* Add the ASF license header comment to all new `.java` files (copy from existing files in the project)

* Add yourself as an `@author` to the .java files that you modify substantially (more than cosmetic changes).

* Please include unit tests.

* If no-one else is using your branch, please rebase it against the current `main` (or other target branch in the main project).

* When writing a commit message please follow https://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html[these conventions], if you are fixing an existing issue please add `Fixes gh-XXXX` at the end of the commit message (where XXXX is the issue number).