Crate molt_registry_client 

Molt WASM-aware registry client.

This crate is a thin, WASM-focused extension on top of [oci-client] (oras-project/rust-oci-client).

It supports:

• OCI Distribution API (/v2) helpers for pulling component wasm layers.
• Molt extension API (/wasm/v1) helpers for WIT, interface index, and search.

The Molt spec this targets is described in this repo’s docs:

• WIT referrers: application/vnd.wasm.wit.v1+text
• /wasm/v1 endpoints: .../wit, .../interfaces, .../dependencies, /search

Example (env-configured)

use molt_registry_client::{OciWasmClient, WasmV1Client, WitRequest};

let oci = OciWasmClient::from_env()?.expect("set MOLT_REGISTRY");
let wasm = oci.pull_component_wasm("example/repo", "1.0.0").await?;
println!("downloaded {} bytes", wasm.len());

let wasm_v1 = WasmV1Client::from_env()?.expect("set MOLT_REGISTRY");
let wit = wasm_v1
    .wit_text("example/repo", "1.0.0", &WitRequest::default())
    .await?;
println!("{}", wit.text);

Structs

InterfacesResponse

OciWasmClient

PulledComponentWasm

PushWitResult

ReferrerDescriptor

RegistryEndpoint

SearchQuery

SearchResponse

SearchResult

WasmV1Client

WitRequest

WitTextResponse

Constants

OCI_EMPTY_CONFIG_MEDIA_TYPE

Recommended media type for empty {} config blobs for artifact manifests.

OCI_IMAGE_MANIFEST_MEDIA_TYPE

OCI image manifest media type (required for WIT referrers).

WASM_COMPONENT_ARTIFACT_TYPE

Component artifactType (recommended).

WASM_COMPONENT_LAYER_MEDIA_TYPE

Component layer media type (existing / used by Molt).

WASM_CONFIG_MEDIA_TYPE_V0

Molt config media type used by component artifacts (v0).

WIT_ARTIFACT_TYPE_V1

WIT referrer artifactType (v1).

WIT_LAYER_MEDIA_TYPE_V1

WIT layer media type (v1).

Functions

auth_from_env

auth_from_header_line

sanitize_path_segment

Sanitize a string for use as a directory name segment on common filesystems.