noetl-server 2.63.0

NoETL Control Plane - Async Rust server for workflow orchestration
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130

//! Server-side secret-provider clients (Secrets Wallet Phase 3b,
//! noetl/ai-meta#61).
//!
//! These resolve a secret **reference** to its value from an external secret
//! manager. They live on the server (not the worker) so the keychain/credential
//! resolver can fetch a secret on a cache miss, cache it envelope-encrypted
//! (Phase 1 [`crate::crypto::EnvelopeCipher`]), and hand it back masked — the
//! raw value never enters the workflow data flow. This is the resolution
//! engine; the resolver hook that calls it lands in a later round.
//!
//! [`GcpSecretManager`] is the first backend (next to the existing
//! [`crate::crypto::GcpKms`], which it shares the Workload-Identity token
//! pattern with). AWS Secrets Manager, Azure Key Vault, HashiCorp Vault, and
//! Kubernetes Secrets follow behind the same [`SecretProvider`] trait.

mod aws;
mod aws_sts;
mod azure;
mod azure_oauth;
pub mod broker;
pub mod dynamic;
mod gcp;
mod gcp_iam;
mod k8s;
mod registry;
pub mod residency;
mod resolver;
mod vault;

pub use aws::AwsSmSecretProvider;
pub use aws_sts::AwsStsProvider;
pub use azure::AzureKeyVaultProvider;
pub use azure_oauth::AzureOAuthProvider;
pub use gcp::GcpSecretManager;
pub use gcp_iam::GcpIamProvider;
pub use k8s::K8sSecretProvider;
pub use registry::get_provider;
pub use resolver::{resolve_keychain_entry, resolve_keychain_entry_with_meta};
pub use vault::VaultSecretProvider;

use std::sync::{Arc, OnceLock};

use async_trait::async_trait;

use crate::error::{AppError, AppResult};

/// A resolved secret plus its provenance.
///
/// `value` is the secret material as a UTF-8 string; `version` is the
/// provider's resolved version identifier when the backend reports one
/// (e.g. the concrete version number behind a `latest` alias);
/// `expires_at` is Secrets-Wallet Phase 6d — the issuer's reported expiry
/// for short-lived dynamic secrets (AWS STS / AAD bearer / GCP access
/// tokens / OAuth2 access tokens with `expires_in`).  `None` for
/// long-lived API keys whose lifetime is operator-controlled.
#[derive(Debug, Clone, Default)]
pub struct SecretValue {
    pub value: String,
    pub version: Option<String>,
    pub expires_at: Option<chrono::DateTime<chrono::Utc>>,
}

/// A request to fetch one secret from a provider.
///
/// Fields are provider-agnostic; each backend interprets them:
/// - `name` — the secret id / name, or a fully-qualified resource path.
/// - `project` — GCP project / AWS account / Azure vault / Vault mount.
/// - `version` — version / stage; defaults to the provider's "latest".
/// - `region` — Secrets-Wallet Phase 6a: home region of the secret as
///   declared on the [`KeychainDef`] (or filled from `NOETL_SERVER_REGION`
///   as a fallback).  AWS uses it as the regional endpoint host; Azure /
///   Vault use it to route to the per-region cluster / vault; GCP includes
///   it in the resource id.  `None` means the provider falls back to its
///   own default region (back-compat with pre-6a deployments).
#[derive(Debug, Clone, Default)]
pub struct SecretRef {
    pub name: String,
    pub project: Option<String>,
    pub version: Option<String>,
    pub region: Option<String>,
}

/// A backend that resolves [`SecretRef`]s to [`SecretValue`]s.
#[async_trait]
pub trait SecretProvider: Send + Sync {
    /// Stable provider id (`gcp`, `aws`, `azure`, `vault`, `k8s`).
    fn provider(&self) -> &'static str;

    /// Fetch one secret. Implementations never log the resolved value;
    /// callers keep it out of any state-surfacing response (masked at the
    /// boundary per the secrets-and-redaction contract).
    async fn fetch(&self, secret: &SecretRef) -> AppResult<SecretValue>;
}

/// The server's home region, read once from `NOETL_SERVER_REGION` at process
/// startup.  Empty when the env is unset (legacy mode).
///
/// Used as the fallback for a [`KeychainDef`] that didn't declare its own
/// region — the keychain entry's declared region always wins over this.
/// Phase 6a (residency-aware distributed resolution) — when residency
/// enforcement lands (Phase 6c), this is also the value compared against an
/// entry's `region` to decide whether resolution is allowed.
pub fn server_region() -> &'static str {
    static R: OnceLock<String> = OnceLock::new();
    R.get_or_init(|| std::env::var("NOETL_SERVER_REGION").unwrap_or_default())
        .as_str()
}

/// Build a [`SecretProvider`] for a keychain entry's `provider` id.
///
/// Mirrors [`crate::crypto::build_key_manager`]. `gcp` → [`GcpSecretManager`]
/// from ambient config. An unsupported / unset provider returns an error — the
/// R3b resolver treats that as "this entry isn't provider-sourced" and falls
/// through to the credential store. AWS / Azure / Vault / K8s slot in here.
pub fn build_secret_provider(provider: &str) -> AppResult<Arc<dyn SecretProvider>> {
    match provider {
        "gcp" => Ok(Arc::new(GcpSecretManager::from_env()?)),
        "gcp_iam" | "gcp_iamcredentials" => Ok(Arc::new(GcpIamProvider::from_env()?)),
        "k8s" | "kubernetes" => Ok(Arc::new(K8sSecretProvider::from_env()?)),
        "vault" => Ok(Arc::new(VaultSecretProvider::from_env()?)),
        "aws" | "aws_sm" => Ok(Arc::new(AwsSmSecretProvider::from_env()?)),
        "aws_sts" | "aws_iam" => Ok(Arc::new(AwsStsProvider::from_env()?)),
        "azure" | "azure_kv" => Ok(Arc::new(AzureKeyVaultProvider::from_env()?)),
        "azure_oauth" | "azure_aad" => Ok(Arc::new(AzureOAuthProvider::from_env()?)),
        other => Err(AppError::Config(format!(
            "unsupported keychain secret provider '{other}' \
             (supported: gcp, gcp_iam, k8s, vault, aws, aws_sts, azure, azure_oauth)"
        ))),
    }
}