Files
codex/codex-rs/app-server-protocol/src/rpc.rs
T
Adam Perry @ OpenAI 829f5b6b59 protocol: separate app and exec RPC ownership (#29714)
## Why

The app-server and exec-server expose separate JSON-RPC APIs, but
exec-server currently sources its serialized protocol and envelope types
through app-server-oriented code. Giving each API an explicit owner
makes the crate boundary legible without introducing shared generic
envelopes.

## What changed

- Added `codex-exec-server-protocol` to own exec DTOs, process IDs, and
JSON-RPC envelopes.
- Updated exec-server clients, transports, handlers, and tests to use
the new crate.
- Exposed app-server's existing JSON-RPC types through a public `rpc`
module while retaining root re-exports.
- Preserved existing wire shapes, including exec `PathUri` behavior.

## Stack

This is PR 1 of 6. Next: [PR
#29721](https://github.com/openai/codex/pull/29721), which moves auth
mode below the app wire boundary.

## Validation

- Exec-server protocol and server coverage passed in the focused
protocol test runs.
- App-server protocol schema fixtures passed.
2026-06-23 22:37:31 +00:00

89 lines
2.6 KiB
Rust

//! We do not do true JSON-RPC 2.0, as we neither send nor expect the
//! "jsonrpc": "2.0" field.
use codex_protocol::protocol::W3cTraceContext;
use schemars::JsonSchema;
use serde::Deserialize;
use serde::Serialize;
use std::fmt;
use ts_rs::TS;
pub const JSONRPC_VERSION: &str = "2.0";
#[derive(
Debug, Clone, PartialEq, PartialOrd, Ord, Deserialize, Serialize, Hash, Eq, JsonSchema, TS,
)]
#[serde(untagged)]
pub enum RequestId {
String(String),
#[ts(type = "number")]
Integer(i64),
}
impl fmt::Display for RequestId {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
Self::String(value) => f.write_str(value),
Self::Integer(value) => write!(f, "{value}"),
}
}
}
pub type Result = serde_json::Value;
/// Refers to any valid JSON-RPC object that can be decoded off the wire, or encoded to be sent.
#[derive(Debug, Clone, PartialEq, Deserialize, Serialize, JsonSchema, TS)]
#[serde(untagged)]
pub enum JSONRPCMessage {
Request(JSONRPCRequest),
Notification(JSONRPCNotification),
Response(JSONRPCResponse),
Error(JSONRPCError),
}
/// A request that expects a response.
#[derive(Debug, Clone, PartialEq, Deserialize, Serialize, JsonSchema, TS)]
pub struct JSONRPCRequest {
pub id: RequestId,
pub method: String,
#[serde(default, skip_serializing_if = "Option::is_none")]
#[ts(optional)]
pub params: Option<serde_json::Value>,
/// Optional W3C Trace Context for distributed tracing.
#[serde(default, skip_serializing_if = "Option::is_none")]
#[ts(optional)]
pub trace: Option<W3cTraceContext>,
}
/// A notification which does not expect a response.
#[derive(Debug, Clone, PartialEq, Deserialize, Serialize, JsonSchema, TS)]
pub struct JSONRPCNotification {
pub method: String,
#[serde(default, skip_serializing_if = "Option::is_none")]
#[ts(optional)]
pub params: Option<serde_json::Value>,
}
/// A successful (non-error) response to a request.
#[derive(Debug, Clone, PartialEq, Deserialize, Serialize, JsonSchema, TS)]
pub struct JSONRPCResponse {
pub id: RequestId,
pub result: Result,
}
/// A response to a request that indicates an error occurred.
#[derive(Debug, Clone, PartialEq, Deserialize, Serialize, JsonSchema, TS)]
pub struct JSONRPCError {
pub error: JSONRPCErrorError,
pub id: RequestId,
}
#[derive(Debug, Clone, PartialEq, Deserialize, Serialize, JsonSchema, TS)]
pub struct JSONRPCErrorError {
pub code: i64,
#[serde(default, skip_serializing_if = "Option::is_none")]
#[ts(optional)]
pub data: Option<serde_json::Value>,
pub message: String,
}