manta_server/
manta_backend_dispatcher.rs

1//! Runtime backend selector — wraps either a CSM or an OpenCHAMI backend
2//! behind a single enum so the rest of the codebase is backend-agnostic.
3
4use csm_rs::backend_connector::Csm;
5use manta_backend_dispatcher::error::Error;
6use ochami_rs::backend_connector::Ochami;
7
8#[derive(Clone)]
9#[allow(clippy::upper_case_acronyms)]
10/// Routes API calls to either a CSM or OCHAMI backend.
11///
12/// All backend-specific trait methods are dispatched via
13/// the `dispatch!` macro defined in the
14/// [`crate::backend_dispatcher`] module.
15#[derive(Debug)]
16pub enum StaticBackendDispatcher {
17  /// HPE Cray System Management (CSM) backend, used by Alps-style
18  /// deployments. Wraps a `csm-rs` HTTP client.
19  CSM(Csm),
20  /// OpenCHAMI backend, used by sites running the open-source CSM
21  /// alternative. Wraps an `ochami-rs` HTTP client.
22  OCHAMI(Ochami),
23}
24
25impl StaticBackendDispatcher {
26  /// Returns `"csm"` or `"ochami"` for the currently-selected variant.
27  /// Cheap, infallible — intended for use as a structured `tracing` field.
28  pub fn backend_kind(&self) -> &'static str {
29    match self {
30      Self::CSM(_) => "csm",
31      Self::OCHAMI(_) => "ochami",
32    }
33  }
34
35  /// Create a new dispatcher for the given backend type.
36  ///
37  /// `backend_type` must be `"csm"` or `"ochami"`;
38  /// any other value returns an error.
39  pub fn new(
40    backend_type: &str,
41    base_url: &str,
42    root_cert: &[u8],
43    socks5_proxy: Option<&str>,
44  ) -> Result<Self, Error> {
45    match backend_type {
46      "csm" => Ok(Self::CSM(Csm::new(base_url, root_cert, socks5_proxy)?)),
47      "ochami" => {
48        Ok(Self::OCHAMI(Ochami::new(base_url, root_cert, socks5_proxy)))
49      }
50      _ => Err(Error::UnsupportedBackend(format!(
51        "Backend '{backend_type}' not supported"
52      ))),
53    }
54  }
55}
manta_server/manta_backend_dispatcher.rs

manta_server/
manta_backend_dispatcher.rs
