refactor(mcp): strip sse fallback architecture in favor of pure websockets and fix nvim NDJSON bug
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Riz Ashraf committed
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commit
3716c3e698
33 files changed
+2082
-1756
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@@ -0,0 +1,17 @@
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[package]
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name = "nvim-core"
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version = "0.1.0"
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edition = "2021"
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[dependencies]
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serde = { version = "1.0", features = ["derive"] }
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serde_json = "1.0"
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rmp-serde = "1.1"
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rmpv = "1.0"
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tokio = { version = "1.37", features = ["full", "io-util", "io-std"] }
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tracing = "0.1.44"
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tracing-appender = "0.2.5"
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tracing-subscriber = "0.3.23"
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dirs = "7.0.0"
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rmcp = { version = "3.4.0", features = ["server"] }
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@@ -0,0 +1,843 @@
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use serde::{Deserialize, Serialize};
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use serde_json::{json, Value};
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use tokio::io::{AsyncBufReadExt, AsyncReadExt, AsyncWriteExt, BufReader};
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#[derive(Serialize, Deserialize, Debug, Clone)]
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pub struct JsonRpcRequest {
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pub jsonrpc: String,
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pub id: Option<Value>,
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pub method: String,
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pub params: Option<Value>,
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}
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#[derive(Serialize, Debug, Clone)]
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pub struct JsonRpcResponse {
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pub jsonrpc: String,
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pub id: Value,
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#[serde(skip_serializing_if = "Option::is_none")]
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pub result: Option<Value>,
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#[serde(skip_serializing_if = "Option::is_none")]
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pub error: Option<Value>,
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}
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pub async fn read_message<R: tokio::io::AsyncRead + Unpin>(stdin: &mut BufReader<R>) -> Option<JsonRpcRequest> {
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let mut length = 0;
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loop {
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let mut line = String::new();
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if stdin.read_line(&mut line).await.unwrap_or(0) == 0 {
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return None;
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}
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if line.starts_with('{') {
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return match serde_json::from_str::<JsonRpcRequest>(line.trim_end()) {
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Ok(req) => Some(req),
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Err(e) => {
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tracing::error!("Failed to parse JSON-RPC request from JSONL: {}. Payload: {}", e, line);
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None
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}
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};
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}
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let line = line.trim_end();
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if line.is_empty() {
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break;
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}
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let lower_line = line.to_lowercase();
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if let Some(len_str) = lower_line.strip_prefix("content-length:") {
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length = len_str.trim().parse().unwrap_or(0);
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}
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}
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if length == 0 {
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return None;
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}
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let mut buffer = vec![0; length];
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stdin.read_exact(&mut buffer).await.unwrap_or(0);
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serde_json::from_slice(&buffer).ok()
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}
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pub async fn send_response(response: JsonRpcResponse) {
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let msg = serde_json::to_string(&response).unwrap();
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tracing::info!("Sending JSON-RPC response (id: {:?}): {}", response.id, if msg.len() > 500 { format!("{}...", &msg[..500]) } else { msg.clone() });
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// CRITICAL ARCHITECTURAL DECISION:
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// The MCP StdioTransport MUST use Newline-Delimited JSON (NDJSON).
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// Do NOT use LSP-style HTTP headers (e.g. Content-Length).
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// See MCP protocol spec (SEP-2575) and mcp-go-sdk bufio.Scanner implementation.
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let payload = format!("{}\n", msg);
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let mut stdout = tokio::io::stdout();
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let _ = stdout.write_all(payload.as_bytes()).await;
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let _ = stdout.flush().await;
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}
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pub async fn send_error(id: Value, code: i32, message: &str) {
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send_response(JsonRpcResponse {
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jsonrpc: "2.0".to_string(),
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id,
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result: None,
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error: Some(serde_json::json!({"code": code, "message": message})),
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}).await;
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}
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#[cfg(windows)]
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async fn get_socket_path() -> Result<String, String> {
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let profile = std::env::var("USERPROFILE").unwrap_or_else(|_| "C:\\Users\\reazul.ashraf".into());
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let path = format!("{}\\.gemini\\active_nvim.txt", profile);
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if let Ok(content) = std::fs::read_to_string(&path) {
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let p = content.trim().to_string();
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if !p.is_empty() {
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if p.starts_with(r"\\.\pipe\") {
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return Ok(p);
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} else if p.starts_with("nvim.") {
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return Ok(format!(r"\\.\pipe\{}", p));
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} else {
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return Ok(p);
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}
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}
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}
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tracing::warn!("active_nvim.txt missing or invalid, falling back to pipe discovery");
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if let Ok(dir) = std::fs::read_dir(r"\\.\pipe\") {
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for entry in dir.flatten() {
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let name = entry.file_name();
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let name_str = name.to_string_lossy();
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if name_str.starts_with("nvim.") {
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return Ok(format!(r"\\.\pipe\{}", name_str));
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}
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}
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}
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Err("Could not find active Windows Neovim named pipe".to_string())
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}
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#[cfg(unix)]
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async fn get_socket_path() -> Result<String, String> {
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if let Ok(home) = std::env::var("HOME") {
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let path = format!("{}/.gemini/active_nvim.txt", home);
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if let Ok(content) = std::fs::read_to_string(&path) {
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let p = content.trim().to_string();
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if !p.is_empty() {
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return Ok(p);
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}
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}
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}
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if let Ok(entries) = std::fs::read_dir("/tmp") {
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for entry in entries.flatten() {
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if let Ok(name) = entry.file_name().into_string() {
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if name.starts_with("nvim.") {
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let path = entry.path().join("0");
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if path.exists() {
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return Ok(path.to_string_lossy().to_string());
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}
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}
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}
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}
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}
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Err("Could not find Neovim socket".to_string())
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}
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#[cfg(windows)]
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async fn call_nvim(req: rmpv::Value) -> Result<rmpv::Value, String> {
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use tokio::net::windows::named_pipe::ClientOptions;
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let msgid = if let rmpv::Value::Array(ref arr) = req {
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if arr.len() > 1 { arr[1].clone() } else { rmpv::Value::Nil }
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} else { rmpv::Value::Nil };
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tracing::info!("Connecting to neovim pipe");
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let socket_path = get_socket_path().await?;
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let mut client = ClientOptions::new().open(&socket_path).map_err(|e| e.to_string())?;
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let mut buf = Vec::new();
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rmpv::encode::write_value(&mut buf, &req).map_err(|e| e.to_string())?;
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tracing::info!("Sending RPC request to neovim (msgid: {})", msgid);
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client.write_all(&buf).await.map_err(|e| e.to_string())?;
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let mut resp_buf = Vec::new();
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let mut chunk = vec![0u8; 8192];
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let mut offset = 0;
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loop {
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let mut cursor = std::io::Cursor::new(&resp_buf[offset..]);
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match rmpv::decode::read_value(&mut cursor) {
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Ok(val) => {
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offset += cursor.position() as usize;
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if let rmpv::Value::Array(ref arr) = val {
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if arr.len() >= 4 && arr[0] == rmpv::Value::Integer(1.into()) && arr[1] == msgid {
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tracing::info!("Received RPC response from neovim (msgid: {})", msgid);
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return Ok(val);
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}
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}
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continue;
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},
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Err(_) => {
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let read_future = client.read(&mut chunk);
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match tokio::time::timeout(tokio::time::Duration::from_secs(5), read_future).await {
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Ok(Ok(n)) => {
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if n == 0 { return Err("Connection closed".into()); }
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resp_buf.extend_from_slice(&chunk[..n]);
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}
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Ok(Err(e)) => return Err(e.to_string()),
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Err(_) => {
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tracing::error!("Timeout waiting for Neovim response (msgid: {})", msgid);
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return Err("Timeout waiting for Neovim response".into());
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}
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}
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}
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}
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}
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}
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#[cfg(unix)]
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async fn call_nvim(req: rmpv::Value) -> Result<rmpv::Value, String> {
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use tokio::net::UnixStream;
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let msgid = if let rmpv::Value::Array(ref arr) = req {
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if arr.len() > 1 { arr[1].clone() } else { rmpv::Value::Nil }
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} else { rmpv::Value::Nil };
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tracing::info!("Connecting to neovim socket");
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let socket_path = get_socket_path().await?;
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let mut stream = UnixStream::connect(socket_path).await.map_err(|e| e.to_string())?;
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let mut buf = Vec::new();
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rmpv::encode::write_value(&mut buf, &req).map_err(|e| e.to_string())?;
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tracing::info!("Sending RPC request to neovim (msgid: {})", msgid);
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stream.write_all(&buf).await.map_err(|e| e.to_string())?;
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let mut resp_buf = Vec::new();
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let mut chunk = vec![0u8; 8192];
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let mut offset = 0;
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loop {
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let mut cursor = std::io::Cursor::new(&resp_buf[offset..]);
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match rmpv::decode::read_value(&mut cursor) {
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Ok(val) => {
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offset += cursor.position() as usize;
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if let rmpv::Value::Array(ref arr) = val {
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if arr.len() >= 4 && arr[0] == rmpv::Value::Integer(1.into()) && arr[1] == msgid {
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tracing::info!("Received RPC response from neovim (msgid: {})", msgid);
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return Ok(val);
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}
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}
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continue;
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},
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Err(_) => {
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let read_future = stream.read(&mut chunk);
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match tokio::time::timeout(tokio::time::Duration::from_secs(5), read_future).await {
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Ok(Ok(n)) => {
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if n == 0 { return Err("Connection closed".into()); }
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resp_buf.extend_from_slice(&chunk[..n]);
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}
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Ok(Err(e)) => return Err(e.to_string()),
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Err(_) => {
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tracing::error!("Timeout waiting for Neovim response (msgid: {})", msgid);
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return Err("Timeout waiting for Neovim response".into());
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}
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}
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}
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}
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}
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}
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async fn send_nvim_command(cmd: &str) -> Result<(), String> {
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use rmpv::Value as RmpValue;
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let req = RmpValue::Array(vec![
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RmpValue::Integer(0.into()),
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RmpValue::Integer(1.into()), // msgid
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RmpValue::String("nvim_command".into()),
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RmpValue::Array(vec![RmpValue::String(cmd.into())]),
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]);
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let resp = call_nvim(req).await?;
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if let RmpValue::Array(arr) = resp {
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if !arr[2].is_nil() {
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return Err(format!("Neovim error: {:?}", arr[2]));
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}
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return Ok(());
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}
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Err("Invalid response".to_string())
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}
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async fn get_nvim_active_buffer() -> Result<String, String> {
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use rmpv::Value as RmpValue;
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let req = RmpValue::Array(vec![
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RmpValue::Integer(0.into()),
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RmpValue::Integer(2.into()), // msgid
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RmpValue::String("nvim_buf_get_lines".into()),
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RmpValue::Array(vec![
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RmpValue::Integer(0.into()),
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RmpValue::Integer(0.into()),
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RmpValue::Integer((-1).into()),
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RmpValue::Boolean(true),
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]),
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]);
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let resp = call_nvim(req).await?;
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if let RmpValue::Array(arr) = resp {
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if !arr[2].is_nil() {
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return Err(format!("Neovim error: {:?}", arr[2]));
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}
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if let RmpValue::Array(lines) = &arr[3] {
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let mut text = String::new();
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for line in lines {
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if let RmpValue::String(s) = line {
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if let Some(s) = s.as_str() {
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text.push_str(s);
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text.push('\n');
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}
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}
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}
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return Ok(text);
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}
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}
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Err("Invalid response".to_string())
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}
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async fn get_nvim_cursor() -> Result<String, String> {
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use rmpv::Value as RmpValue;
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let req = RmpValue::Array(vec![
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RmpValue::Integer(0.into()),
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RmpValue::Integer(3.into()), // msgid
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RmpValue::String("nvim_win_get_cursor".into()),
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RmpValue::Array(vec![
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RmpValue::Integer(0.into()),
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]),
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]);
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let resp = call_nvim(req).await?;
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if let RmpValue::Array(arr) = resp {
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if !arr[2].is_nil() {
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return Err(format!("Neovim error: {:?}", arr[2]));
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}
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if let RmpValue::Array(pos) = &arr[3] {
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if pos.len() == 2 {
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if let (RmpValue::Integer(row), RmpValue::Integer(col)) = (&pos[0], &pos[1]) {
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return Ok(format!("Line: {}, Column: {}", row, col));
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}
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}
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}
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}
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Err("Invalid response".to_string())
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}
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async fn get_nvim_visual_selection() -> Result<String, String> {
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let lua_script = r#"
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local _, csrow, cscol, _ = unpack(vim.fn.getpos("'<"))
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local _, cerow, cecol, _ = unpack(vim.fn.getpos("'>"))
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local lines = vim.fn.getline(csrow, cerow)
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if type(lines) == "table" then
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return table.concat(lines, "\n")
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else
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return lines
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end
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"#;
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use rmpv::Value as RmpValue;
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let req = RmpValue::Array(vec![
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RmpValue::Integer(0.into()),
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RmpValue::Integer(4.into()), // msgid
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RmpValue::String("nvim_exec_lua".into()),
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RmpValue::Array(vec![
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RmpValue::String(lua_script.into()),
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RmpValue::Array(vec![]),
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]),
|
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]);
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let resp = call_nvim(req).await?;
|
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if let RmpValue::Array(arr) = resp {
|
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if !arr[2].is_nil() {
|
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return Err(format!("Neovim error: {:?}", arr[2]));
|
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}
|
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if let RmpValue::String(s) = &arr[3] {
|
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if let Some(text) = s.as_str() {
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return Ok(text.to_string());
|
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}
|
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}
|
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}
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Err("Invalid response".to_string())
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}
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|
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async fn set_nvim_diagnostics(line: i64, message: &str) -> Result<(), String> {
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let escaped_message = message.replace("\\", "\\\\").replace("\"", "\\\"");
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let lua_script = format!(r#"
|
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local ns = vim.api.nvim_create_namespace("gemini_diagnostics")
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local diagnostics = {{{{
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lnum = {} - 1,
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col = 0,
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severity = vim.diagnostic.severity.WARN,
|
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message = "{}",
|
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}}}}
|
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vim.diagnostic.set(ns, 0, diagnostics, {{}})
|
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"#, line, escaped_message);
|
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|
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use rmpv::Value as RmpValue;
|
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let req = RmpValue::Array(vec![
|
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RmpValue::Integer(0.into()),
|
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RmpValue::Integer(5.into()), // msgid
|
||||
RmpValue::String("nvim_exec_lua".into()),
|
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RmpValue::Array(vec![
|
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RmpValue::String(lua_script.into()),
|
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RmpValue::Array(vec![]),
|
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]),
|
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]);
|
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|
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let resp = call_nvim(req).await?;
|
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if let RmpValue::Array(arr) = resp {
|
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if !arr[2].is_nil() {
|
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return Err(format!("Neovim error: {:?}", arr[2]));
|
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}
|
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return Ok(());
|
||||
}
|
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Err("Invalid response".to_string())
|
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}
|
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|
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fn rmpv_to_json(val: &rmpv::Value) -> serde_json::Value {
|
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match val {
|
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rmpv::Value::Nil => serde_json::Value::Null,
|
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rmpv::Value::Boolean(b) => serde_json::json!(*b),
|
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rmpv::Value::Integer(i) => {
|
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if let Some(n) = i.as_i64() {
|
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serde_json::json!(n)
|
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} else if let Some(n) = i.as_u64() {
|
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serde_json::json!(n)
|
||||
} else {
|
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serde_json::Value::Null
|
||||
}
|
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},
|
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rmpv::Value::F32(f) => serde_json::json!(f),
|
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rmpv::Value::F64(f) => serde_json::json!(f),
|
||||
rmpv::Value::String(s) => {
|
||||
if let Some(str_val) = s.as_str() {
|
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serde_json::json!(str_val)
|
||||
} else {
|
||||
serde_json::Value::Null
|
||||
}
|
||||
},
|
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rmpv::Value::Array(arr) => {
|
||||
let vec: Vec<serde_json::Value> = arr.iter().map(rmpv_to_json).collect();
|
||||
serde_json::Value::Array(vec)
|
||||
},
|
||||
rmpv::Value::Map(map) => {
|
||||
let mut obj = serde_json::Map::new();
|
||||
for (k, v) in map {
|
||||
let key_str = if let rmpv::Value::String(s) = k {
|
||||
s.as_str().unwrap_or("").to_string()
|
||||
} else {
|
||||
format!("{:?}", k)
|
||||
};
|
||||
obj.insert(key_str, rmpv_to_json(v));
|
||||
}
|
||||
serde_json::Value::Object(obj)
|
||||
},
|
||||
_ => serde_json::json!(format!("{:?}", val)),
|
||||
}
|
||||
}
|
||||
|
||||
async fn execute_nvim_lua(code: &str) -> Result<String, String> {
|
||||
use rmpv::Value as RmpValue;
|
||||
let req = RmpValue::Array(vec![
|
||||
RmpValue::Integer(0.into()),
|
||||
RmpValue::Integer(6.into()), // msgid
|
||||
RmpValue::String("nvim_exec_lua".into()),
|
||||
RmpValue::Array(vec![
|
||||
RmpValue::String(code.into()),
|
||||
RmpValue::Array(vec![]),
|
||||
]),
|
||||
]);
|
||||
|
||||
let resp = call_nvim(req).await?;
|
||||
if let RmpValue::Array(arr) = resp {
|
||||
if !arr[2].is_nil() {
|
||||
return Err(format!("Neovim error: {:?}", arr[2]));
|
||||
}
|
||||
if arr.len() > 3 {
|
||||
return Ok(serde_json::to_string_pretty(&rmpv_to_json(&arr[3])).unwrap_or_default());
|
||||
}
|
||||
return Ok("".to_string());
|
||||
}
|
||||
Err("Invalid response".to_string())
|
||||
}
|
||||
pub async fn run_mcp_loop(app_name: &str, app_version: &str) {
|
||||
if std::env::args().any(|arg| arg == "--version") {
|
||||
println!("{} {} ({})", app_name, app_version, std::env::var("GIT_HASH").unwrap_or_else(|_| "unknown".to_string()));
|
||||
return;
|
||||
}
|
||||
let _guard = init_logging(app_name);
|
||||
tracing::info!("{} MCP server started", app_name);
|
||||
let mut stdin = tokio::io::BufReader::new(tokio::io::stdin());
|
||||
loop {
|
||||
let msg = match read_message(&mut stdin).await {
|
||||
Some(m) => {
|
||||
tracing::info!("Received message method: {}", m.method);
|
||||
m
|
||||
},
|
||||
None => {
|
||||
tracing::info!("Stdin closed, exiting loop");
|
||||
break;
|
||||
}
|
||||
};
|
||||
|
||||
let app_name = app_name.to_string();
|
||||
let app_version = app_version.to_string();
|
||||
|
||||
tokio::spawn(async move {
|
||||
let id = msg.id.clone().unwrap_or(json!(null));
|
||||
let _start_time = std::time::Instant::now();
|
||||
|
||||
match msg.method.as_str() {
|
||||
"initialize" => {
|
||||
let init = rmcp::model::InitializeResult::new(
|
||||
rmcp::model::ServerCapabilities::builder().enable_tools().build()
|
||||
)
|
||||
.with_server_info(rmcp::model::Implementation::new(app_name.clone(), app_version.clone()))
|
||||
.with_protocol_version(rmcp::model::ProtocolVersion::V_2024_11_05);
|
||||
|
||||
send_response(JsonRpcResponse {
|
||||
jsonrpc: "2.0".to_string(),
|
||||
id,
|
||||
result: Some(serde_json::to_value(init).unwrap()),
|
||||
error: None,
|
||||
}).await;
|
||||
}
|
||||
"notifications/initialized" => {}
|
||||
"tools/list" => {
|
||||
send_response(JsonRpcResponse {
|
||||
jsonrpc: "2.0".to_string(),
|
||||
id,
|
||||
result: Some(json!({
|
||||
"tools": [
|
||||
{
|
||||
"name": "nvim_goto_line",
|
||||
"description": "Open a file and jump to a specific line",
|
||||
"inputSchema": {
|
||||
"type": "object",
|
||||
"properties": {
|
||||
"file": { "type": "string" },
|
||||
"line": { "type": "integer" }
|
||||
},
|
||||
"required": ["file", "line"]
|
||||
}
|
||||
},
|
||||
{
|
||||
"name": "nvim_get_active_buffer",
|
||||
"description": "Get the contents of the currently active Neovim buffer",
|
||||
"inputSchema": {
|
||||
"type": "object",
|
||||
"properties": {}
|
||||
}
|
||||
},
|
||||
{
|
||||
"name": "nvim_get_cursor",
|
||||
"description": "Get the current cursor position (line and column) in the active Neovim buffer",
|
||||
"inputSchema": {
|
||||
"type": "object",
|
||||
"properties": {}
|
||||
}
|
||||
},
|
||||
{
|
||||
"name": "nvim_get_visual_selection",
|
||||
"description": "Get the text that is currently highlighted or was last highlighted in Visual mode",
|
||||
"inputSchema": {
|
||||
"type": "object",
|
||||
"properties": {}
|
||||
}
|
||||
},
|
||||
{
|
||||
"name": "nvim_set_diagnostics",
|
||||
"description": "Push a diagnostic message (like an LSP warning) to a specific line in the active buffer",
|
||||
"inputSchema": {
|
||||
"type": "object",
|
||||
"properties": {
|
||||
"line": { "type": "integer" },
|
||||
"message": { "type": "string" }
|
||||
},
|
||||
"required": ["line", "message"]
|
||||
}
|
||||
},
|
||||
{
|
||||
"name": "nvim_list_buffers",
|
||||
"description": "List all open buffers in Neovim",
|
||||
"inputSchema": {
|
||||
"type": "object",
|
||||
"properties": {}
|
||||
}
|
||||
},
|
||||
{
|
||||
"name": "nvim_get_diagnostics",
|
||||
"description": "Get all diagnostics for the current active buffer",
|
||||
"inputSchema": {
|
||||
"type": "object",
|
||||
"properties": {}
|
||||
}
|
||||
},
|
||||
{
|
||||
"name": "nvim_execute_lua",
|
||||
"description": "Execute arbitrary Lua code in Neovim and return the result (JSON serialized).",
|
||||
"inputSchema": {
|
||||
"type": "object",
|
||||
"properties": {
|
||||
"code": { "type": "string" }
|
||||
},
|
||||
"required": ["code"]
|
||||
}
|
||||
}
|
||||
]
|
||||
})),
|
||||
error: None,
|
||||
}).await;
|
||||
}
|
||||
"tools/call" => {
|
||||
let params = msg.params.unwrap_or(json!({}));
|
||||
let name = params.get("name").and_then(|n| n.as_str()).unwrap_or("");
|
||||
let default_args = json!({});
|
||||
let args = params.get("arguments").unwrap_or(&default_args);
|
||||
|
||||
match name {
|
||||
"nvim_goto_line" => {
|
||||
if let (Some(file), Some(line)) = (args.get("file").and_then(|v| v.as_str()), args.get("line").and_then(|v| v.as_i64())) {
|
||||
let escaped_file = file.replace("\\", "\\\\");
|
||||
let cmd = format!("e {} | {} | normal! zz", escaped_file, line);
|
||||
match send_nvim_command(&cmd).await {
|
||||
Ok(_) => {
|
||||
send_response(JsonRpcResponse {
|
||||
jsonrpc: "2.0".to_string(),
|
||||
id,
|
||||
result: Some(json!({
|
||||
"content": [{"type": "text", "text": format!("Successfully jumped to {} line {}", file, line)}]
|
||||
})),
|
||||
error: None,
|
||||
}).await;
|
||||
}
|
||||
Err(e) => send_error(id, -32603, &e).await,
|
||||
}
|
||||
} else {
|
||||
send_error(id, -32602, "Missing 'file' or 'line'").await;
|
||||
}
|
||||
}
|
||||
"nvim_get_active_buffer" => {
|
||||
match get_nvim_active_buffer().await {
|
||||
Ok(content) => {
|
||||
send_response(JsonRpcResponse {
|
||||
jsonrpc: "2.0".to_string(),
|
||||
id,
|
||||
result: Some(json!({
|
||||
"content": [{"type": "text", "text": content}]
|
||||
})),
|
||||
error: None,
|
||||
}).await;
|
||||
}
|
||||
Err(e) => send_error(id, -32603, &e).await,
|
||||
}
|
||||
}
|
||||
"nvim_get_cursor" => {
|
||||
match get_nvim_cursor().await {
|
||||
Ok(content) => {
|
||||
send_response(JsonRpcResponse {
|
||||
jsonrpc: "2.0".to_string(),
|
||||
id,
|
||||
result: Some(json!({
|
||||
"content": [{"type": "text", "text": content}]
|
||||
})),
|
||||
error: None,
|
||||
}).await;
|
||||
}
|
||||
Err(e) => send_error(id, -32603, &e).await,
|
||||
}
|
||||
}
|
||||
"nvim_get_visual_selection" => {
|
||||
match get_nvim_visual_selection().await {
|
||||
Ok(content) => {
|
||||
send_response(JsonRpcResponse {
|
||||
jsonrpc: "2.0".to_string(),
|
||||
id,
|
||||
result: Some(json!({
|
||||
"content": [{"type": "text", "text": content}]
|
||||
})),
|
||||
error: None,
|
||||
}).await;
|
||||
}
|
||||
Err(e) => send_error(id, -32603, &e).await,
|
||||
}
|
||||
}
|
||||
"nvim_set_diagnostics" => {
|
||||
if let (Some(line), Some(message)) = (args.get("line").and_then(|v| v.as_i64()), args.get("message").and_then(|v| v.as_str())) {
|
||||
match set_nvim_diagnostics(line, message).await {
|
||||
Ok(_) => {
|
||||
send_response(JsonRpcResponse {
|
||||
jsonrpc: "2.0".to_string(),
|
||||
id,
|
||||
result: Some(json!({
|
||||
"content": [{"type": "text", "text": format!("Successfully set diagnostic on line {}", line)}]
|
||||
})),
|
||||
error: None,
|
||||
}).await;
|
||||
}
|
||||
Err(e) => send_error(id, -32603, &e).await,
|
||||
}
|
||||
} else {
|
||||
send_error(id, -32602, "Missing 'line' or 'message'").await;
|
||||
}
|
||||
}
|
||||
"nvim_list_buffers" => {
|
||||
let lua_code = r#"
|
||||
local bufs = vim.api.nvim_list_bufs()
|
||||
local result = {}
|
||||
for _, buf in ipairs(bufs) do
|
||||
if vim.api.nvim_buf_is_loaded(buf) then
|
||||
local name = vim.api.nvim_buf_get_name(buf)
|
||||
table.insert(result, { id = buf, name = name })
|
||||
end
|
||||
end
|
||||
return vim.fn.json_encode(result)
|
||||
"#;
|
||||
match execute_nvim_lua(lua_code).await {
|
||||
Ok(result) => {
|
||||
send_response(JsonRpcResponse {
|
||||
jsonrpc: "2.0".to_string(),
|
||||
id,
|
||||
result: Some(json!({
|
||||
"content": [{"type": "text", "text": result}]
|
||||
})),
|
||||
error: None,
|
||||
}).await;
|
||||
}
|
||||
Err(e) => send_error(id, -32603, &e).await,
|
||||
}
|
||||
}
|
||||
"nvim_get_diagnostics" => {
|
||||
let lua_code = r#"
|
||||
local bufnr = vim.api.nvim_get_current_buf()
|
||||
local diagnostics = vim.diagnostic.get(bufnr)
|
||||
local result = {}
|
||||
for _, d in ipairs(diagnostics) do
|
||||
table.insert(result, {
|
||||
lnum = d.lnum,
|
||||
col = d.col,
|
||||
severity = d.severity,
|
||||
message = d.message,
|
||||
source = d.source
|
||||
})
|
||||
end
|
||||
return vim.fn.json_encode(result)
|
||||
"#;
|
||||
match execute_nvim_lua(lua_code).await {
|
||||
Ok(result) => {
|
||||
send_response(JsonRpcResponse {
|
||||
jsonrpc: "2.0".to_string(),
|
||||
id,
|
||||
result: Some(json!({
|
||||
"content": [{"type": "text", "text": result}]
|
||||
})),
|
||||
error: None,
|
||||
}).await;
|
||||
}
|
||||
Err(e) => send_error(id, -32603, &e).await,
|
||||
}
|
||||
}
|
||||
"nvim_execute_lua" => {
|
||||
if let Some(code) = args.get("code").and_then(|v| v.as_str()) {
|
||||
match execute_nvim_lua(code).await {
|
||||
Ok(result) => {
|
||||
send_response(JsonRpcResponse {
|
||||
jsonrpc: "2.0".to_string(),
|
||||
id,
|
||||
result: Some(json!({
|
||||
"content": [{"type": "text", "text": result}]
|
||||
})),
|
||||
error: None,
|
||||
}).await;
|
||||
}
|
||||
Err(e) => send_error(id, -32603, &e).await,
|
||||
}
|
||||
} else {
|
||||
send_error(id, -32602, "Missing 'code'").await;
|
||||
}
|
||||
}
|
||||
_ => send_error(id, -32601, "Method not found").await,
|
||||
}
|
||||
}
|
||||
_ => {
|
||||
if !id.is_null() {
|
||||
send_error(id, -32601, "Method not found").await;
|
||||
} else {
|
||||
// Ignore notifications silently
|
||||
}
|
||||
}
|
||||
}
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
fn init_logging(app_name: &str) -> tracing_appender::non_blocking::WorkerGuard {
|
||||
let log_dir = dirs::home_dir().unwrap_or_default().join(".gemini/mcp_memory/logs");
|
||||
std::fs::create_dir_all(&log_dir).unwrap_or_default();
|
||||
|
||||
let file_appender = tracing_appender::rolling::daily(log_dir, format!("{}.log", app_name));
|
||||
let (non_blocking, guard) = tracing_appender::non_blocking(file_appender);
|
||||
|
||||
let _ = tracing_subscriber::fmt()
|
||||
.with_writer(non_blocking)
|
||||
.with_ansi(false)
|
||||
.with_max_level(tracing::Level::INFO)
|
||||
.try_init();
|
||||
|
||||
guard
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::*;
|
||||
|
||||
#[test]
|
||||
fn test_rmpv_to_json_primitives() {
|
||||
assert_eq!(rmpv_to_json(&rmpv::Value::Nil), serde_json::Value::Null);
|
||||
assert_eq!(rmpv_to_json(&rmpv::Value::Boolean(true)), json!(true));
|
||||
assert_eq!(rmpv_to_json(&rmpv::Value::Integer(42.into())), json!(42));
|
||||
assert_eq!(rmpv_to_json(&rmpv::Value::String("hello".into())), json!("hello"));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_rmpv_to_json_array() {
|
||||
let arr = rmpv::Value::Array(vec![
|
||||
rmpv::Value::Integer(1.into()),
|
||||
rmpv::Value::String("test".into()),
|
||||
]);
|
||||
assert_eq!(rmpv_to_json(&arr), json!([1, "test"]));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_rmpv_to_json_map() {
|
||||
let mut map = vec![];
|
||||
map.push((rmpv::Value::String("key1".into()), rmpv::Value::Integer(100.into())));
|
||||
let rmp_map = rmpv::Value::Map(map);
|
||||
|
||||
let json_map = rmpv_to_json(&rmp_map);
|
||||
assert_eq!(json_map, json!({ "key1": 100 }));
|
||||
}
|
||||
|
||||
#[tokio::test]
|
||||
async fn test_read_message_jsonl() {
|
||||
let input = "{\"jsonrpc\": \"2.0\", \"id\": 1, \"method\": \"test\"}\n";
|
||||
let mut reader = BufReader::new(input.as_bytes());
|
||||
let req = read_message(&mut reader).await.unwrap();
|
||||
assert_eq!(req.method, "test");
|
||||
}
|
||||
|
||||
#[tokio::test]
|
||||
async fn test_read_message_http_headers() {
|
||||
let payload = "{\"jsonrpc\": \"2.0\", \"id\": 2, \"method\": \"test2\"}";
|
||||
let input = format!("Content-Length: {}\r\n\r\n{}", payload.len(), payload);
|
||||
let mut reader = BufReader::new(input.as_bytes());
|
||||
let req = read_message(&mut reader).await.unwrap();
|
||||
assert_eq!(req.method, "test2");
|
||||
}
|
||||
|
||||
#[tokio::test]
|
||||
async fn test_read_message_malformed() {
|
||||
let input = "Content-Length: abc\r\n\r\n{}";
|
||||
let mut reader = BufReader::new(input.as_bytes());
|
||||
let req = read_message(&mut reader).await;
|
||||
assert!(req.is_none());
|
||||
}
|
||||
}
|
||||
Reference in new issue
Block a user