feat(router): support runtime disabling of tools (#809)

* feat(router): support runtime disabling of tools

Add methods to disable/enable tools at runtime.
Disabled tools are hidden from listing, lookup,
and execution, including in composed routers.

Closes #477

* fix(router): simplify disable tool api

* feat(router): auto-send tools/list_changed on disable/enable

* refactor(router): simplify disable_route and notifier call
This commit is contained in:
lutz-grex 2026-04-22 14:10:29 +02:00 • committed by GitHub
commit 63583b164f
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4 changed files with 750 additions and 15 deletions

View file

@ -6,7 +6,7 @@ use tool::{IntoToolRoute, ToolRoute};
use super::ServerHandler;
use crate::{
RoleServer, Service,
model::{ClientRequest, ListPromptsResult, ListToolsResult, ServerResult},
model::{ClientNotification, ClientRequest, ListPromptsResult, ListToolsResult, ServerResult},
service::NotificationContext,
};
@ -18,6 +18,7 @@ pub struct Router<S> {
pub tool_router: tool::ToolRouter<S>,
pub prompt_router: prompt::PromptRouter<S>,
pub service: Arc<S>,
peer_slot: Arc<std::sync::OnceLock<crate::service::Peer<RoleServer>>>,
}
impl<S> Router<S>
@ -25,10 +26,14 @@ where
S: ServerHandler,
{
pub fn new(service: S) -> Self {
let (notifier, peer_slot) = tool::ToolRouter::<S>::deferred_peer_notifier();
let mut tool_router = tool::ToolRouter::new();
tool_router.set_notifier(notifier);
Self {
tool_router: tool::ToolRouter::new(),
tool_router,
prompt_router: prompt::PromptRouter::new(),
service: Arc::new(service),
peer_slot,
}
}
@ -72,6 +77,12 @@ where
notification: <RoleServer as crate::service::ServiceRole>::PeerNot,
context: NotificationContext<RoleServer>,
) -> Result<(), crate::ErrorData> {
if matches!(
&notification,
ClientNotification::InitializedNotification(_)
) {
let _ = self.peer_slot.set(context.peer.clone());
}
self.service
.handle_notification(notification, context)
.await
@ -83,7 +94,10 @@ where
) -> Result<<RoleServer as crate::service::ServiceRole>::Resp, crate::ErrorData> {
match request {
ClientRequest::CallToolRequest(request) => {
if self.tool_router.has_route(request.params.name.as_ref())
if self
.tool_router
.map
.contains_key(request.params.name.as_ref())
|| !self.tool_router.transparent_when_not_found
{
let tool_call_context = crate::handler::server::tool::ToolCallContext::new(
@ -134,6 +148,81 @@ where
}
fn get_info(&self) -> <RoleServer as crate::service::ServiceRole>::Info {
ServerHandler::get_info(&self.service)
let mut info = ServerHandler::get_info(&self.service);
info.capabilities
.tools
.get_or_insert_with(Default::default)
.list_changed = Some(true);
info
}
}
#[cfg(test)]
mod tests {
use std::sync::Arc;
use super::*;
use crate::{
model::{CallToolResult, ClientNotification, ServerNotification, Tool},
service::{AtomicU32RequestIdProvider, Peer, PeerSinkMessage, RequestIdProvider},
};
struct DummyHandler;
impl ServerHandler for DummyHandler {}
async fn recv_notification(
rx: &mut tokio::sync::mpsc::Receiver<PeerSinkMessage<RoleServer>>,
) -> ServerNotification {
let msg = tokio::time::timeout(std::time::Duration::from_secs(1), rx.recv())
.await
.expect("timed out")
.expect("channel closed");
match msg {
PeerSinkMessage::Notification {
notification,
responder,
} => {
let _ = responder.send(Ok(()));
notification
}
other => panic!("expected notification, got {other:?}"),
}
}
#[tokio::test]
async fn test_router_deferred_notifier_e2e() {
let mut router = Router::new(DummyHandler).with_tool(tool::ToolRoute::new_dyn(
Tool::new("my_tool", "test", Arc::new(Default::default())),
|_ctx| Box::pin(async { Ok(CallToolResult::default()) }),
));
let id_provider: Arc<dyn RequestIdProvider> =
Arc::new(AtomicU32RequestIdProvider::default());
let (peer, mut rx) = Peer::<RoleServer>::new(id_provider, None);
let context = crate::service::NotificationContext {
peer: peer.clone(),
meta: Default::default(),
extensions: Default::default(),
};
router
.handle_notification(
ClientNotification::InitializedNotification(Default::default()),
context,
)
.await
.unwrap();
router.tool_router.disable_route("my_tool");
assert!(matches!(
recv_notification(&mut rx).await,
ServerNotification::ToolListChangedNotification(_)
));
router.tool_router.enable_route("my_tool");
assert!(matches!(
recv_notification(&mut rx).await,
ServerNotification::ToolListChangedNotification(_)
));
}
}

View file

@ -298,13 +298,30 @@ where
self
}
}
#[derive(Debug)]
#[non_exhaustive]
pub struct ToolRouter<S> {
#[allow(clippy::type_complexity)]
pub map: std::collections::HashMap<Cow<'static, str>, ToolRoute<S>>,
pub transparent_when_not_found: bool,
disabled: std::collections::HashSet<Cow<'static, str>>,
notifier: Option<Arc<dyn Fn() + Send + Sync>>,
}
impl<S> std::fmt::Debug for ToolRouter<S> {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.debug_struct("ToolRouter")
.field("map", &self.map)
.field(
"transparent_when_not_found",
&self.transparent_when_not_found,
)
.field("disabled", &self.disabled)
.field("notifier", &self.notifier.as_ref().map(|_| "..."))
.finish()
}
}
impl<S> Default for ToolRouter<S> {
@ -312,14 +329,19 @@ impl<S> Default for ToolRouter<S> {
Self {
map: std::collections::HashMap::new(),
transparent_when_not_found: false,
disabled: std::collections::HashSet::new(),
notifier: None,
}
}
}
impl<S> Clone for ToolRouter<S> {
fn clone(&self) -> Self {
Self {
map: self.map.clone(),
transparent_when_not_found: self.transparent_when_not_found,
disabled: self.disabled.clone(),
notifier: self.notifier.clone(),
}
}
}
@ -329,7 +351,11 @@ impl<S> IntoIterator for ToolRouter<S> {
type IntoIter = std::collections::hash_map::IntoValues<Cow<'static, str>, ToolRoute<S>>;
fn into_iter(self) -> Self::IntoIter {
self.map.into_values()
let mut map = self.map;
for name in &self.disabled {
map.remove(name);
}
map.into_values()
}
}
@ -338,10 +364,7 @@ where
S: MaybeSend + 'static,
{
pub fn new() -> Self {
Self {
map: std::collections::HashMap::new(),
transparent_when_not_found: false,
}
Self::default()
}
pub fn with_route<R, A>(mut self, route: R) -> Self
where
@ -394,24 +417,134 @@ where
}
pub fn merge(&mut self, other: ToolRouter<S>) {
self.disabled.extend(other.disabled);
for item in other.map.into_values() {
self.add_route(item);
}
}
/// Remove a tool route from the router.
///
/// The disabled state is **preserved**: if the name was in the disabled
/// set, it stays there so that a future [`add_route`](Self::add_route)
/// or [`merge`](Self::merge) with the same name will inherit the
/// disabled state. To also clear the disabled marker, call
/// [`enable_route`](Self::enable_route) afterwards.
pub fn remove_route(&mut self, name: &str) {
self.map.remove(name);
}
/// Returns `true` if the tool is registered **and** not currently
/// disabled.
pub fn has_route(&self, name: &str) -> bool {
self.map.contains_key(name)
self.map.contains_key(name) && !self.disabled.contains(name)
}
/// Disable a tool by name. Hidden from `list_all`, `get`, rejected by
/// `call`. Re-enable with [`enable_route`](Self::enable_route).
///
/// Returns `true` if the name was newly added to the disabled set.
/// The name is recorded even if no matching route exists yet, so routes
/// added later will inherit the disabled state.
pub fn disable_route(&mut self, name: impl Into<Cow<'static, str>>) -> bool {
let name = name.into();
let was_visible = self.map.contains_key(&name) && !self.disabled.contains(&name);
if was_visible {
self.notify_if_visible(&name);
}
self.disabled.insert(name)
}
/// Re-enable a previously disabled tool. Returns `true` if the name
/// was in the disabled set.
pub fn enable_route(&mut self, name: &str) -> bool {
let removed = self.disabled.remove(name);
if removed {
self.notify_if_visible(name);
}
removed
}
/// Returns `true` if the tool exists in the router **and** is currently
/// disabled. Returns `false` if the tool does not exist or if the name
/// was pre-disabled without a matching route.
pub fn is_disabled(&self, name: &str) -> bool {
self.map.contains_key(name) && self.disabled.contains(name)
}
/// Builder-style variant of [`disable_route`](Self::disable_route).
///
/// The name is recorded even if no matching route has been added yet,
/// so it can be called before [`with_route`](Self::with_route) in a
/// builder chain.
pub fn with_disabled(mut self, name: impl Into<Cow<'static, str>>) -> Self {
self.disabled.insert(name.into());
self
}
/// Install a callback invoked when the visible tool list changes.
pub fn set_notifier(&mut self, f: impl Fn() + Send + Sync + 'static) {
self.notifier = Some(Arc::new(f));
}
pub fn clear_notifier(&mut self) {
self.notifier = None;
}
/// Install a notifier that sends `notifications/tools/list_changed`
/// via the given peer.
pub fn bind_peer_notifier(&mut self, peer: &crate::service::Peer<crate::RoleServer>) {
let peer = peer.clone();
self.set_notifier(move || {
let peer = peer.clone();
tokio::spawn(async move {
if let Err(e) = peer.notify_tool_list_changed().await {
tracing::warn!("failed to send tools/list_changed notification: {e}");
}
});
});
}
/// Deferred notifier: no-op until the peer slot is filled.
pub(crate) fn deferred_peer_notifier() -> (
impl Fn() + Send + Sync + 'static,
Arc<std::sync::OnceLock<crate::service::Peer<crate::RoleServer>>>,
) {
let peer_slot =
Arc::new(std::sync::OnceLock::<crate::service::Peer<crate::RoleServer>>::new());
let slot_clone = peer_slot.clone();
let notifier = move || {
if let Some(peer) = slot_clone.get() {
let peer = peer.clone();
tokio::spawn(async move {
if let Err(e) = peer.notify_tool_list_changed().await {
tracing::warn!("failed to send tools/list_changed notification: {e}");
}
});
}
};
(notifier, peer_slot)
}
fn notify_if_visible(&self, name: &str) {
if self.map.contains_key(name) {
if let Some(notifier) = &self.notifier {
notifier();
}
}
}
pub async fn call(
&self,
context: ToolCallContext<'_, S>,
) -> Result<CallToolResult, crate::ErrorData> {
let name = context.name();
if self.disabled.contains(name) {
return Err(crate::ErrorData::invalid_params("tool not found", None));
}
let item = self
.map
.get(context.name())
.get(name)
.ok_or_else(|| crate::ErrorData::invalid_params("tool not found", None))?;
let result = (item.call)(context).await?;
@ -420,15 +553,24 @@ where
}
pub fn list_all(&self) -> Vec<crate::model::Tool> {
let mut tools: Vec<_> = self.map.values().map(|item| item.attr.clone()).collect();
let mut tools: Vec<_> = self
.map
.values()
.filter(|item| !self.disabled.contains(&item.attr.name))
.map(|item| item.attr.clone())
.collect();
tools.sort_by(|a, b| a.name.cmp(&b.name));
tools
}
/// Get a tool definition by name.
///
/// Returns the tool if found, or `None` if no tool with the given name exists.
/// Returns the tool if found and enabled, or `None` if the tool does not
/// exist or is disabled.
pub fn get(&self, name: &str) -> Option<&crate::model::Tool> {
if self.disabled.contains(name) {
return None;
}
self.map.get(name).map(|r| &r.attr)
}
}
@ -453,3 +595,49 @@ where
self.merge(other);
}
}
#[cfg(test)]
mod tests {
use std::sync::Arc;
use super::*;
use crate::{
RoleServer,
model::{CallToolRequestParams, ErrorCode, NumberOrString},
service::{AtomicU32RequestIdProvider, Peer, RequestContext},
};
struct DummyService;
impl crate::handler::server::ServerHandler for DummyService {}
#[tokio::test]
async fn test_call_disabled_tool_returns_error() {
let service = DummyService;
let mut router = ToolRouter::new().with_route(ToolRoute::new_dyn(
crate::model::Tool::new("test_tool", "a test tool", Arc::new(Default::default())),
|_ctx| Box::pin(async { Ok(CallToolResult::default()) }),
));
router.disable_route("test_tool");
let id_provider: Arc<dyn crate::service::RequestIdProvider> =
Arc::new(AtomicU32RequestIdProvider::default());
let (peer, _rx) = Peer::<RoleServer>::new(id_provider, None);
let ctx = crate::handler::server::tool::ToolCallContext::new(
&service,
CallToolRequestParams {
meta: None,
name: Cow::Borrowed("test_tool"),
arguments: None,
task: None,
},
RequestContext::new(NumberOrString::Number(1), peer),
);
let err = router
.call(ctx)
.await
.expect_err("disabled tool should reject");
assert_eq!(err.code, ErrorCode::INVALID_PARAMS);
assert_eq!(err.message, "tool not found");
}
}

View file

@ -0,0 +1,172 @@
//! Integration tests for tool list change notifications.
#![cfg(all(feature = "client", not(feature = "local")))]
use std::sync::{
Arc,
atomic::{AtomicUsize, Ordering},
};
use rmcp::{
ClientHandler, RoleClient, RoleServer, ServerHandler, ServiceExt,
handler::server::{router::tool::ToolRoute, tool::ToolCallContext},
model::{CallToolResult, ServerCapabilities, ServerInfo, Tool},
service::{MaybeSendFuture, NotificationContext},
};
use tokio::sync::{Notify, RwLock};
#[derive(Clone)]
struct TestToolServer {
router: Arc<RwLock<rmcp::handler::server::router::tool::ToolRouter<Self>>>,
trigger_disable: Arc<Notify>,
trigger_enable: Arc<Notify>,
}
impl TestToolServer {
fn new() -> Self {
let mut tool_router = rmcp::handler::server::router::tool::ToolRouter::<Self>::new();
tool_router.add_route(ToolRoute::new_dyn(
Tool::new("tool_a", "Tool A", Arc::new(Default::default())),
|_ctx| Box::pin(async { Ok(CallToolResult::default()) }),
));
tool_router.add_route(ToolRoute::new_dyn(
Tool::new("tool_b", "Tool B", Arc::new(Default::default())),
|_ctx| Box::pin(async { Ok(CallToolResult::default()) }),
));
Self {
router: Arc::new(RwLock::new(tool_router)),
trigger_disable: Arc::new(Notify::new()),
trigger_enable: Arc::new(Notify::new()),
}
}
}
impl ServerHandler for TestToolServer {
fn get_info(&self) -> ServerInfo {
ServerInfo::new(ServerCapabilities::builder().enable_tools().build())
}
fn call_tool(
&self,
request: rmcp::model::CallToolRequestParams,
context: rmcp::service::RequestContext<RoleServer>,
) -> impl std::future::Future<Output = Result<CallToolResult, rmcp::ErrorData>> + MaybeSendFuture + '_
{
async move {
let router = self.router.read().await;
let tcc = ToolCallContext::new(self, request, context);
router.call(tcc).await
}
}
fn list_tools(
&self,
_request: Option<rmcp::model::PaginatedRequestParams>,
_context: rmcp::service::RequestContext<RoleServer>,
) -> impl std::future::Future<Output = Result<rmcp::model::ListToolsResult, rmcp::ErrorData>>
+ MaybeSendFuture
+ '_ {
async move {
let router = self.router.read().await;
Ok(rmcp::model::ListToolsResult {
tools: router.list_all(),
..Default::default()
})
}
}
fn on_initialized(
&self,
context: NotificationContext<RoleServer>,
) -> impl std::future::Future<Output = ()> + MaybeSendFuture + '_ {
let router = self.router.clone();
let trigger_disable = self.trigger_disable.clone();
let trigger_enable = self.trigger_enable.clone();
let peer = context.peer.clone();
async move {
router.write().await.bind_peer_notifier(&peer);
let router = router.clone();
tokio::spawn(async move {
trigger_disable.notified().await;
{
let mut r = router.write().await;
r.disable_route("tool_a");
}
trigger_enable.notified().await;
{
let mut r = router.write().await;
r.enable_route("tool_a");
}
});
}
}
}
#[derive(Clone)]
struct TestToolClient {
notification_count: Arc<AtomicUsize>,
notify: Arc<Notify>,
}
impl TestToolClient {
fn new() -> Self {
Self {
notification_count: Arc::new(AtomicUsize::new(0)),
notify: Arc::new(Notify::new()),
}
}
}
impl ClientHandler for TestToolClient {
fn on_tool_list_changed(
&self,
_context: NotificationContext<RoleClient>,
) -> impl std::future::Future<Output = ()> + MaybeSendFuture + '_ {
self.notification_count.fetch_add(1, Ordering::SeqCst);
self.notify.notify_one();
std::future::ready(())
}
}
#[tokio::test]
async fn test_disable_enable_sends_tool_list_changed() {
let server = TestToolServer::new();
let trigger_disable = server.trigger_disable.clone();
let trigger_enable = server.trigger_enable.clone();
let client = TestToolClient::new();
let notification_count = client.notification_count.clone();
let client_notify = client.notify.clone();
let (server_transport, client_transport) = tokio::io::duplex(4096);
let server_handle = tokio::spawn(async move { server.serve(server_transport).await });
let client_service = client.serve(client_transport).await.unwrap();
let tools = client_service.peer().list_tools(None).await.unwrap();
assert_eq!(tools.tools.len(), 2);
trigger_disable.notify_one();
tokio::time::timeout(std::time::Duration::from_secs(5), client_notify.notified())
.await
.expect("timed out waiting for tool_list_changed");
assert_eq!(notification_count.load(Ordering::SeqCst), 1);
let tools = client_service.peer().list_tools(None).await.unwrap();
assert_eq!(tools.tools.len(), 1);
assert_eq!(tools.tools[0].name, "tool_b");
trigger_enable.notify_one();
tokio::time::timeout(std::time::Duration::from_secs(5), client_notify.notified())
.await
.expect("timed out waiting for tool_list_changed");
assert_eq!(notification_count.load(Ordering::SeqCst), 2);
let tools = client_service.peer().list_tools(None).await.unwrap();
assert_eq!(tools.tools.len(), 2);
client_service.cancel().await.unwrap();
server_handle.abort();
}

View file

@ -1,5 +1,8 @@
#![cfg(not(feature = "local"))]
use std::collections::HashMap;
use std::{
collections::HashMap,
sync::atomic::{AtomicUsize, Ordering},
};
use futures::future::BoxFuture;
use rmcp::{
@ -84,3 +87,286 @@ fn test_tool_router_list_all_is_sorted() {
"list_all() should return tools sorted alphabetically by name"
);
}
fn build_router() -> ToolRouter<TestHandler<()>> {
ToolRouter::<TestHandler<()>>::new()
.with_route((async_function_tool_attr(), async_function))
.with_route((async_function2_tool_attr(), async_function2))
+ TestHandler::<()>::test_router_1()
+ TestHandler::<()>::test_router_2()
}
#[test]
fn test_disable_route() {
let mut router = build_router();
assert_eq!(router.list_all().len(), 4);
assert!(router.has_route("async_function"));
assert!(router.get("async_function").is_some());
assert!(router.disable_route("async_function"));
assert_eq!(router.list_all().len(), 3);
assert!(!router.has_route("async_function"));
assert!(router.get("async_function").is_none());
assert!(router.is_disabled("async_function"));
// other tools unaffected
assert!(router.has_route("async_function2"));
assert!(router.get("async_function2").is_some());
assert!(!router.is_disabled("async_function2"));
}
#[test]
fn test_enable_route() {
let mut router = build_router();
assert!(router.disable_route("async_function"));
assert!(!router.has_route("async_function"));
assert!(router.enable_route("async_function"));
assert!(router.has_route("async_function"));
assert!(router.get("async_function").is_some());
assert!(!router.is_disabled("async_function"));
assert_eq!(router.list_all().len(), 4);
}
#[test]
fn test_with_disabled_builder() {
let router = build_router()
.with_disabled("async_function")
.with_disabled("sync_method");
assert_eq!(router.list_all().len(), 2);
assert!(!router.has_route("async_function"));
assert!(!router.has_route("sync_method"));
assert!(router.has_route("async_function2"));
assert!(router.has_route("async_method"));
}
#[test]
fn test_disabled_tools_survive_merge() {
let mut router_a = ToolRouter::<TestHandler<()>>::new()
.with_route((async_function_tool_attr(), async_function));
assert!(router_a.disable_route("async_function"));
let router_b = ToolRouter::<TestHandler<()>>::new()
.with_route((async_function2_tool_attr(), async_function2));
router_a.merge(router_b);
assert_eq!(router_a.list_all().len(), 1);
assert!(router_a.is_disabled("async_function"));
assert!(router_a.has_route("async_function2"));
}
#[test]
fn test_disable_nonexistent_tool() {
let mut router = build_router();
// should not panic; returns true because the name is newly added to disabled set
assert!(router.disable_route("does_not_exist"));
assert_eq!(router.list_all().len(), 4);
// is_disabled returns false for tools not in the map
assert!(!router.is_disabled("does_not_exist"));
}
#[test]
fn test_remove_route_preserves_disabled_state() {
let mut router = build_router();
assert!(router.disable_route("async_function"));
assert!(router.is_disabled("async_function"));
router.remove_route("async_function");
assert!(!router.has_route("async_function"));
// Disabled marker is preserved — is_disabled returns false (no route in map)
// but re-adding will inherit the disabled state (tested separately)
assert!(!router.is_disabled("async_function"));
}
#[test]
fn test_remove_route_then_readd_stays_disabled() {
let mut router = build_router();
assert!(router.disable_route("async_function"));
router.remove_route("async_function");
assert!(!router.has_route("async_function"));
// Re-add the route — it should inherit the disabled state
let other = ToolRouter::<TestHandler<()>>::new()
.with_route((async_function_tool_attr(), async_function));
router.merge(other);
assert!(!router.has_route("async_function"));
assert!(router.is_disabled("async_function"));
assert!(router.get("async_function").is_none());
}
#[test]
fn test_into_iter_skips_disabled() {
let router = build_router().with_disabled("async_function");
let names: Vec<_> = router
.into_iter()
.map(|r| r.attr.name.to_string())
.collect();
assert_eq!(names.len(), 3);
assert!(!names.contains(&"async_function".to_string()));
}
#[test]
fn test_pre_disable_before_add_route() {
// Disabling a name before adding a route with that name should
// result in the route being disabled once added.
let router = ToolRouter::<TestHandler<()>>::new()
.with_disabled("async_function")
.with_route((async_function_tool_attr(), async_function));
assert_eq!(router.list_all().len(), 0);
assert!(router.is_disabled("async_function"));
assert!(!router.has_route("async_function"));
}
#[test]
fn test_disabled_tool_invisible_across_all_queries() {
let router = build_router().with_disabled("async_function");
// Not listed
let names: Vec<_> = router.list_all().iter().map(|t| t.name.clone()).collect();
assert!(!names.contains(&"async_function".into()));
// Not retrievable
assert!(router.get("async_function").is_none());
// Not routable
assert!(!router.has_route("async_function"));
// But known as disabled
assert!(router.is_disabled("async_function"));
}
#[test]
fn test_disable_route_then_add_route_blocks_tool() {
// Full pre-disable lifecycle via runtime mutation (not builder)
let mut router = ToolRouter::<TestHandler<()>>::new();
router.disable_route("async_function");
// Add route after disabling — tool should be blocked
let other = ToolRouter::<TestHandler<()>>::new()
.with_route((async_function_tool_attr(), async_function));
router.merge(other);
assert!(router.is_disabled("async_function"));
assert!(!router.has_route("async_function"));
assert!(router.get("async_function").is_none());
assert_eq!(router.list_all().len(), 0);
}
#[test]
fn test_disable_enable_return_false_cases() {
let mut router = build_router();
// Repeated disable returns false
assert!(router.disable_route("async_function"));
assert!(!router.disable_route("async_function"));
// Enable returns true, then false on repeat
assert!(router.enable_route("async_function"));
assert!(!router.enable_route("async_function"));
// Enable on name never disabled returns false
assert!(!router.enable_route("async_function2"));
// Enable on unknown name returns false
assert!(!router.enable_route("unknown"));
}
// ── Notifier tests ──────────────────────────────────────────────────────
fn counter_notifier() -> (
impl Fn() + Send + Sync + 'static,
std::sync::Arc<AtomicUsize>,
) {
let counter = std::sync::Arc::new(AtomicUsize::new(0));
let c = counter.clone();
let notifier = move || {
c.fetch_add(1, Ordering::SeqCst);
};
(notifier, counter)
}
#[test]
fn test_notifier_fires_on_disable_and_enable() {
let (notifier, counter) = counter_notifier();
let mut router = build_router();
router.set_notifier(notifier);
assert!(router.disable_route("async_function"));
assert_eq!(counter.load(Ordering::SeqCst), 1);
assert!(!router.disable_route("async_function"));
assert_eq!(counter.load(Ordering::SeqCst), 1);
assert!(router.enable_route("async_function"));
assert_eq!(counter.load(Ordering::SeqCst), 2);
assert!(!router.enable_route("async_function"));
assert_eq!(counter.load(Ordering::SeqCst), 2);
}
#[test]
fn test_notifier_skips_nonexistent_tools() {
let (notifier, counter) = counter_notifier();
let mut router = build_router();
router.set_notifier(notifier);
assert!(router.disable_route("does_not_exist"));
assert_eq!(counter.load(Ordering::SeqCst), 0);
assert!(router.enable_route("does_not_exist"));
assert_eq!(counter.load(Ordering::SeqCst), 0);
assert!(router.disable_route("future_tool"));
assert_eq!(counter.load(Ordering::SeqCst), 0);
assert!(router.enable_route("future_tool"));
assert_eq!(counter.load(Ordering::SeqCst), 0);
}
#[test]
fn test_no_notifier_no_panic() {
let mut router = build_router();
assert!(router.disable_route("async_function"));
assert!(router.enable_route("async_function"));
assert!(router.disable_route("async_function"));
assert!(!router.disable_route("async_function"));
}
#[test]
fn test_clone_shares_notifier() {
let (notifier, counter) = counter_notifier();
let mut router = build_router();
router.set_notifier(notifier);
let mut cloned = router.clone();
assert!(cloned.disable_route("async_function"));
assert_eq!(counter.load(Ordering::SeqCst), 1);
assert!(router.disable_route("async_function"));
assert_eq!(counter.load(Ordering::SeqCst), 2);
cloned.clear_notifier();
assert!(cloned.enable_route("async_function"));
assert_eq!(counter.load(Ordering::SeqCst), 2);
assert!(router.enable_route("async_function"));
assert_eq!(counter.load(Ordering::SeqCst), 3);
}
#[test]
fn test_pre_init_disable_silent_but_correct() {
let mut router = build_router();
assert!(router.disable_route("async_function"));
assert_eq!(router.list_all().len(), 3);
assert!(!router.has_route("async_function"));
let (notifier, counter) = counter_notifier();
router.set_notifier(notifier);
assert_eq!(counter.load(Ordering::SeqCst), 0);
assert!(router.enable_route("async_function"));
assert_eq!(counter.load(Ordering::SeqCst), 1);
}