Respond with JSON-RPC error if we failed to deserialize request
Historically, we intentinally violated JSON-RPC spec here by hard crashing. The idea was to poke both the clients and servers to fix stuff. However, this is confusing for server implementors, and falls down in one important place -- protocol extension are not always backwards compatible, which causes crashes simply due to version mismatch. We had once such case with our own extension, and one for semantic tokens. So let's be less adventerous and just err on the err side!
This commit is contained in:
Aleksey Kladov
parent
e7c8c600b7
commit
3b9548e163
@ -28,17 +28,16 @@ impl<'a> RequestDispatcher<'a> {
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{
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let (id, params) = match self.parse::<R>() {
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Some(it) => it,
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None => {
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return Ok(self);
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}
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None => return Ok(self),
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};
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let world = panic::AssertUnwindSafe(&mut *self.global_state);
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let response = panic::catch_unwind(move || {
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let _pctx = stdx::panic_context::enter(format!("request: {} {:#?}", R::METHOD, params));
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let result = f(world.0, params);
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result_to_response::<R>(id, result)
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})
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.map_err(|_| format!("sync task {:?} panicked", R::METHOD))?;
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.map_err(|_err| format!("sync task {:?} panicked", R::METHOD))?;
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self.global_state.respond(response);
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Ok(self)
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}
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@ -47,7 +46,7 @@ impl<'a> RequestDispatcher<'a> {
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pub(crate) fn on<R>(
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&mut self,
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f: fn(GlobalStateSnapshot, R::Params) -> Result<R::Result>,
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) -> Result<&mut Self>
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) -> &mut Self
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where
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R: lsp_types::request::Request + 'static,
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R::Params: DeserializeOwned + Send + fmt::Debug + 'static,
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@ -55,9 +54,7 @@ impl<'a> RequestDispatcher<'a> {
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{
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let (id, params) = match self.parse::<R>() {
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Some(it) => it,
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None => {
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return Ok(self);
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}
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None => return self,
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};
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self.global_state.task_pool.handle.spawn({
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@ -71,7 +68,7 @@ impl<'a> RequestDispatcher<'a> {
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}
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});
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Ok(self)
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self
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}
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pub(crate) fn finish(&mut self) {
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@ -82,7 +79,7 @@ impl<'a> RequestDispatcher<'a> {
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lsp_server::ErrorCode::MethodNotFound as i32,
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"unknown request".to_string(),
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);
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self.global_state.respond(response)
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self.global_state.respond(response);
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}
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}
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@ -91,15 +88,24 @@ impl<'a> RequestDispatcher<'a> {
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R: lsp_types::request::Request + 'static,
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R::Params: DeserializeOwned + 'static,
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{
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let req = self.req.take()?;
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let (id, params) = match req.extract::<R::Params>(R::METHOD) {
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Ok(it) => it,
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Err(req) => {
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self.req = Some(req);
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let req = match &self.req {
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Some(req) if req.method == R::METHOD => self.req.take().unwrap(),
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_ => return None,
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};
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let res = crate::from_json(R::METHOD, req.params);
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match res {
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Ok(params) => return Some((req.id, params)),
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Err(err) => {
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let response = lsp_server::Response::new_err(
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req.id,
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lsp_server::ErrorCode::InvalidParams as i32,
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err.to_string(),
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);
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self.global_state.respond(response);
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return None;
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}
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};
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Some((id, params))
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}
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}
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}
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@ -37,14 +37,16 @@ mod document;
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pub mod lsp_ext;
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pub mod config;
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use serde::de::DeserializeOwned;
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pub type Result<T, E = Box<dyn std::error::Error + Send + Sync>> = std::result::Result<T, E>;
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pub use crate::{caps::server_capabilities, main_loop::main_loop};
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use ide::AnalysisHost;
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use serde::de::DeserializeOwned;
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use std::fmt;
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use vfs::Vfs;
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pub use crate::{caps::server_capabilities, main_loop::main_loop};
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pub type Error = Box<dyn std::error::Error + Send + Sync>;
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pub type Result<T, E = Error> = std::result::Result<T, E>;
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pub fn from_json<T: DeserializeOwned>(what: &'static str, json: serde_json::Value) -> Result<T> {
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let res = T::deserialize(&json)
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.map_err(|e| format!("Failed to deserialize {}: {}; {}", what, e, json))?;
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@ -403,53 +403,49 @@ impl GlobalState {
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handlers::handle_matching_brace(s.snapshot(), p)
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})?
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.on_sync::<lsp_ext::MemoryUsage>(|s, p| handlers::handle_memory_usage(s, p))?
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.on::<lsp_ext::AnalyzerStatus>(handlers::handle_analyzer_status)?
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.on::<lsp_ext::SyntaxTree>(handlers::handle_syntax_tree)?
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.on::<lsp_ext::ExpandMacro>(handlers::handle_expand_macro)?
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.on::<lsp_ext::ParentModule>(handlers::handle_parent_module)?
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.on::<lsp_ext::Runnables>(handlers::handle_runnables)?
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.on::<lsp_ext::InlayHints>(handlers::handle_inlay_hints)?
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.on::<lsp_ext::CodeActionRequest>(handlers::handle_code_action)?
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.on::<lsp_ext::ResolveCodeActionRequest>(handlers::handle_resolve_code_action)?
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.on::<lsp_ext::HoverRequest>(handlers::handle_hover)?
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.on::<lsp_ext::ExternalDocs>(handlers::handle_open_docs)?
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.on::<lsp_types::request::OnTypeFormatting>(handlers::handle_on_type_formatting)?
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.on::<lsp_types::request::DocumentSymbolRequest>(handlers::handle_document_symbol)?
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.on::<lsp_types::request::WorkspaceSymbol>(handlers::handle_workspace_symbol)?
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.on::<lsp_types::request::GotoDefinition>(handlers::handle_goto_definition)?
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.on::<lsp_types::request::GotoImplementation>(handlers::handle_goto_implementation)?
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.on::<lsp_types::request::GotoTypeDefinition>(handlers::handle_goto_type_definition)?
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.on::<lsp_types::request::Completion>(handlers::handle_completion)?
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.on::<lsp_types::request::CodeLensRequest>(handlers::handle_code_lens)?
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.on::<lsp_types::request::CodeLensResolve>(handlers::handle_code_lens_resolve)?
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.on::<lsp_types::request::FoldingRangeRequest>(handlers::handle_folding_range)?
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.on::<lsp_types::request::SignatureHelpRequest>(handlers::handle_signature_help)?
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.on::<lsp_types::request::PrepareRenameRequest>(handlers::handle_prepare_rename)?
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.on::<lsp_types::request::Rename>(handlers::handle_rename)?
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.on::<lsp_types::request::References>(handlers::handle_references)?
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.on::<lsp_types::request::Formatting>(handlers::handle_formatting)?
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.on::<lsp_types::request::DocumentHighlightRequest>(
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handlers::handle_document_highlight,
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)?
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.on::<lsp_types::request::CallHierarchyPrepare>(
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handlers::handle_call_hierarchy_prepare,
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)?
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.on::<lsp_ext::AnalyzerStatus>(handlers::handle_analyzer_status)
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.on::<lsp_ext::SyntaxTree>(handlers::handle_syntax_tree)
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.on::<lsp_ext::ExpandMacro>(handlers::handle_expand_macro)
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.on::<lsp_ext::ParentModule>(handlers::handle_parent_module)
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.on::<lsp_ext::Runnables>(handlers::handle_runnables)
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.on::<lsp_ext::InlayHints>(handlers::handle_inlay_hints)
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.on::<lsp_ext::CodeActionRequest>(handlers::handle_code_action)
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.on::<lsp_ext::ResolveCodeActionRequest>(handlers::handle_resolve_code_action)
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.on::<lsp_ext::HoverRequest>(handlers::handle_hover)
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.on::<lsp_ext::ExternalDocs>(handlers::handle_open_docs)
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.on::<lsp_types::request::OnTypeFormatting>(handlers::handle_on_type_formatting)
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.on::<lsp_types::request::DocumentSymbolRequest>(handlers::handle_document_symbol)
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.on::<lsp_types::request::WorkspaceSymbol>(handlers::handle_workspace_symbol)
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.on::<lsp_types::request::GotoDefinition>(handlers::handle_goto_definition)
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.on::<lsp_types::request::GotoImplementation>(handlers::handle_goto_implementation)
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.on::<lsp_types::request::GotoTypeDefinition>(handlers::handle_goto_type_definition)
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.on::<lsp_types::request::Completion>(handlers::handle_completion)
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.on::<lsp_types::request::CodeLensRequest>(handlers::handle_code_lens)
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.on::<lsp_types::request::CodeLensResolve>(handlers::handle_code_lens_resolve)
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.on::<lsp_types::request::FoldingRangeRequest>(handlers::handle_folding_range)
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.on::<lsp_types::request::SignatureHelpRequest>(handlers::handle_signature_help)
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.on::<lsp_types::request::PrepareRenameRequest>(handlers::handle_prepare_rename)
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.on::<lsp_types::request::Rename>(handlers::handle_rename)
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.on::<lsp_types::request::References>(handlers::handle_references)
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.on::<lsp_types::request::Formatting>(handlers::handle_formatting)
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.on::<lsp_types::request::DocumentHighlightRequest>(handlers::handle_document_highlight)
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.on::<lsp_types::request::CallHierarchyPrepare>(handlers::handle_call_hierarchy_prepare)
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.on::<lsp_types::request::CallHierarchyIncomingCalls>(
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handlers::handle_call_hierarchy_incoming,
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)?
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)
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.on::<lsp_types::request::CallHierarchyOutgoingCalls>(
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handlers::handle_call_hierarchy_outgoing,
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)?
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)
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.on::<lsp_types::request::SemanticTokensFullRequest>(
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handlers::handle_semantic_tokens_full,
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)?
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)
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.on::<lsp_types::request::SemanticTokensFullDeltaRequest>(
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handlers::handle_semantic_tokens_full_delta,
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)?
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)
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.on::<lsp_types::request::SemanticTokensRangeRequest>(
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handlers::handle_semantic_tokens_range,
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)?
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.on::<lsp_ext::Ssr>(handlers::handle_ssr)?
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)
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.on::<lsp_ext::Ssr>(handlers::handle_ssr)
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.finish();
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Ok(())
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}
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