vaultrs

An asynchronous Rust client library for the Hashicorp Vault API

The following features are currently supported:

Auth
- AppRole
- AWS
- JWT/OIDC
- Kubernetes
- Token
- Userpass
Secrets
- Databases
- KV v2
- PKI
- SSH
- Transit
Sys
- Health
- Policies
- Sealing
- Wrapping

See something missing? Open an issue.

Installation

First, choose one of the two TLS implementations for vaultrs' connection to Vault:

rustls (default) to use Rustls
native-tls to use rust-native-tls, which builds on your platform-specific TLS implementation.

Then, add vaultrs as a dependency to your cargo.toml:

To use Rustls, import as follows:

[dependencies]
vaultrs = "0.6.2"

To use rust-native-tls, which builds on your platform-specific TLS implementation, specify:

[dependencies]
vaultrs = { version = "0.6.2", default-features = false, features = [ "native-tls" ] }

Usage

Basic

The client is used to configure the connection to Vault and is required to be passed to all API calls for execution. Behind the scenes it uses an asynchronous client from Reqwest for communicating to Vault.

use vaultrs::client::{VaultClient, VaultClientSettingsBuilder};

// Create a client
let client = VaultClient::new(
    VaultClientSettingsBuilder::default()
        .address("https://127.0.0.1:8200")
        .token("TOKEN")
        .build()
        .unwrap()
).unwrap();

Secrets

The library currently supports all operations available for version 2 of the key/value store.

use serde::{Deserialize, Serialize};
use vaultrs::kv2;

// Create and read secrets
#[derive(Debug, Deserialize, Serialize)]
struct MySecret {
    key: String,
    password: String,
}

let secret = MySecret {
    key: "super".to_string(),
    password: "secret".to_string(),
};
kv2::set(
    &client,
    "secret",
    "mysecret",
    &secret,
).await;

let secret: MySecret = kv2::read(&client, "secret", "mysecret").await.unwrap();
println!("{}", secret.password) // "secret"

PKI

The library currently supports all operations available for the PKI secrets engine.

use vaultrs::api::pki::requests::GenerateCertificateRequest;
use vaultrs::pki::cert;

// Generate a certificate using the PKI backend
let cert = cert::generate(
    &client,
    "pki",
    "my_role",
    Some(GenerateCertificateRequest::builder().common_name("test.com")),
).await.unwrap();
println!("{}", cert.certificate) // "{PEM encoded certificate}"

Transit

The library supports most operations for the Transit secrets engine, other than importing keys or batch_input parameters.

use vaultrs::api::transit::requests::CreateKeyRequest;
use vaultrs::api::transit::KeyType;

// Create an encryption key using the /transit backend
key::create(
    &client,
    "transit",
    "my-transit-key",
    Some(CreateKeyRequest::builder()
       .derive(true)
       .key_type(KeyType::Aes256Gcm96)
       .auto_rotate_period("30d")),
).await.unwrap();

Wrapping

All requests implement the ability to be wrapped. These can be passed in your application internally before being unwrapped.

use vaultrs::api::ResponseWrapper;
use vaultrs::api::sys::requests::ListMountsRequest;

let endpoint = ListMountsRequest::builder().build().unwrap();
let wrap_resp = endpoint.wrap(&client).await; // Wrapped response
assert!(wrap_resp.is_ok());

let wrap_resp = wrap_resp.unwrap(); // Unwrap Result<>
let info = wrap_resp.lookup(&client).await; // Check status of this wrapped response
assert!(info.is_ok());

let unwrap_resp = wrap_resp.unwrap(&client).await; // Unwrap the response
assert!(unwrap_resp.is_ok());

let info = wrap_resp.lookup(&client).await; // Error: response already unwrapped
assert!(info.is_err());

Error Handling and Tracing

All errors generated by this crate are wrapped in the ClientError enum provided by the crate. API warnings are automatically captured via tracing and API errors are captured and returned as their own variant. Connection related errors from rustify are wrapped and returned as a single variant.

All top level API operations are instrumented with tracing's #[instrument] attribute.

Testing

See the the tests directory for tests. Run tests with cargo test.

Note: All tests rely on bringing up a local Vault development server using Docker. In order to run tests Docker must be running locally (Docker Desktop works).

Contributing

Check out the issues for items needing attention or submit your own and then:

Fork the repo (https://github.com/jmgilman/vaultrs/fork)
Create your feature branch (git checkout -b feature/fooBar)
Commit your changes (git commit -am 'Add some fooBar')
Push to the branch (git push origin feature/fooBar)
Create a new Pull Request

See CONTRIBUTING for extensive documentation on the architecture of this library and how to add additional functionality to it.

Sbcdn/vaultrs