Crate sentinel_agent_wasm 

Sentinel WebAssembly Agent Library

A WebAssembly agent for Sentinel reverse proxy that executes Wasm modules for request/response processing. Modules can be written in any language that compiles to WebAssembly (Rust, Go, C, AssemblyScript, etc.).

Wasm Module ABI

Modules must export the following functions:

// Memory allocation (required)
alloc(size: i32) -> i32          // Allocate `size` bytes, return pointer
dealloc(ptr: i32, size: i32)     // Free memory at `ptr`

// Request/Response handlers (at least one required)
on_request_headers(ptr: i32, len: i32) -> i64   // Returns (result_ptr << 32) | result_len
on_response_headers(ptr: i32, len: i32) -> i64  // Returns (result_ptr << 32) | result_len

The host passes JSON data to the module and expects JSON back.

Structs

WasmAgent

WebAssembly agent

WasmConfigJson

Configuration JSON for Wasm agent

WasmRequest

Request data passed to Wasm module

WasmResponse

Response data passed to Wasm module

WasmResult

Result from Wasm module execution