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fix(lsp): align operations and harden lifecycle

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This commit is contained in:
Tianyi Cui
2026-07-21 13:29:40 +08:00
parent 2a55f6b684
commit 2fd995bf3c
46 changed files with 680 additions and 366 deletions
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33
packages/lsp/lsp-local/tests/fixture-server.ts
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@@ -12,6 +12,9 @@
* - LSP_FAKE_CRASH_ON_OPEN: "1" exits the process when a didOpen arrives (crash test).
* - LSP_FAKE_EXIT_AFTER_REPLY: "1" exits the process right after answering a textDocument/* request,
* simulating a server that dies while idle so the pool holds a dead instance (eviction test).
* - LSP_FAKE_REPLY_DELAY_MS: delays each textDocument/* response by this many milliseconds.
* - LSP_FAKE_OPEN_MARKER: appends each didOpen document text as one JSON line to this path.
* - LSP_FAKE_CLOSE_STDIN_AFTER_REPLY: "1" closes fd 0 before sending the first query response.
* - LSP_FAKE_EXIT_DELAY_MS / LSP_FAKE_EXIT_MARKER: delay protocol exit and record exit/termination.
* - LSP_FAKE_NO_SHUTDOWN: "1" ignores the shutdown request (forces kill escalation).
* - LSP_FAKE_ON_OPEN: server→client request to emit when a didOpen arrives, one of
@@ -19,10 +22,10 @@
* - LSP_FAKE_ERROR: "1" answers textDocument/* requests with a JSON-RPC error response.
* - LSP_FAKE_GARBAGE: "1" emits an unframed garbage byte before the initialize reply.
*
* Run: node --import tsx fixture-server.ts
* Run: node fixture-server.ts (Node's erasable TypeScript syntax support).
*/
import { appendFileSync } from 'node:fs'
import { appendFileSync, closeSync } from 'node:fs'
const enc = process.env.LSP_FAKE_ENCODING ?? 'utf-16'
const sync: unknown = process.env.LSP_FAKE_SYNC !== undefined ? JSON.parse(process.env.LSP_FAKE_SYNC) : 1
@@ -30,6 +33,9 @@ const extraCaps: unknown = process.env.LSP_FAKE_CAPS !== undefined ? JSON.parse(
const hang = process.env.LSP_FAKE_HANG === '1'
const crashOnOpen = process.env.LSP_FAKE_CRASH_ON_OPEN === '1'
const exitAfterReply = process.env.LSP_FAKE_EXIT_AFTER_REPLY === '1'
const replyDelayMs = Number(process.env.LSP_FAKE_REPLY_DELAY_MS ?? 0)
const openMarker = process.env.LSP_FAKE_OPEN_MARKER
const closeStdinAfterReply = process.env.LSP_FAKE_CLOSE_STDIN_AFTER_REPLY === '1'
const exitDelayMs = Number(process.env.LSP_FAKE_EXIT_DELAY_MS ?? 0)
const exitMarker = process.env.LSP_FAKE_EXIT_MARKER
const noShutdown = process.env.LSP_FAKE_NO_SHUTDOWN === '1'
@@ -124,17 +130,29 @@ function handle(message: { id?: number; method?: string; params?: unknown; resul
}
if (method === 'textDocument/didOpen') {
if (crashOnOpen) process.exit(1)
if (openMarker !== undefined) {
const params = message.params as { textDocument?: { text?: unknown } } | undefined
appendFileSync(openMarker, `${JSON.stringify(params?.textDocument?.text)}\n`)
}
if (onOpen !== undefined) emitServerRequest(onOpen)
return
}
if (method === 'textDocument/didClose' || method === 'initialized') return
if (method?.startsWith('textDocument/')) {
if (hang) return
if (errorReply) { send({ id, error: { code: -32000, message: 'server refused the request' } }); return }
send({ id, result: resultFor(method) })
// Simulate an idle death: answer this request, then exit before the next one arrives so the pool
// is left holding a dead instance.
if (exitAfterReply) setTimeout(() => process.exit(0), 20)
const reply = (): void => {
if (closeStdinAfterReply) closeSync(0)
if (errorReply) {
send({ id, error: { code: -32000, message: 'server refused the request' } })
} else {
send({ id, result: resultFor(method) })
}
// Simulate an idle death: answer this request, then exit before the next one arrives so the
// pool is left holding a dead instance.
if (exitAfterReply) setTimeout(() => process.exit(0), 20)
}
if (replyDelayMs > 0) setTimeout(reply, replyDelayMs)
else reply()
return
}
// Unknown request with an id: answer null so the client never stalls.
@@ -172,3 +190,4 @@ function send(message: Record<string, unknown>): void {
// Keep the event loop alive.
process.stdin.resume()
if (closeStdinAfterReply) setInterval(() => {}, 1000)