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Fix MCP tool launch timeout on macos / unable to connect

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This commit is contained in:
Mo Chahadeh
2026-05-29 14:10:22 +03:00
parent d2ea43d061
commit 36820d6897
3 changed files with 74 additions and 41 deletions
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50
package-lock.json generated
View File

@@ -102,9 +102,9 @@
}
},
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"resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-5.0.5.tgz",
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"dev": true,
"license": "MIT",
"dependencies": {
@@ -650,9 +650,9 @@
}
},
"node_modules/@typescript-eslint/typescript-estree/node_modules/brace-expansion": {
"version": "5.0.5",
"resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-5.0.5.tgz",
"integrity": "sha512-VZznLgtwhn+Mact9tfiwx64fA9erHH/MCXEUfB/0bX/6Fz6ny5EGTXYltMocqg4xFAQZtnO3DHWWXi8RiuN7cQ==",
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"resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-5.0.6.tgz",
"integrity": "sha512-kLpxurY4Z4r9sgMsyG0Z9uzsBlgiU/EFKhj/h91/8yHu0edo7XuixOIH3VcJ8kkxs6/jPzoI6U9Vj3WqbMQ94g==",
"dev": true,
"license": "MIT",
"dependencies": {
@@ -1246,9 +1246,9 @@
}
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"node_modules/eslint/node_modules/brace-expansion": {
"version": "5.0.5",
"resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-5.0.5.tgz",
"integrity": "sha512-VZznLgtwhn+Mact9tfiwx64fA9erHH/MCXEUfB/0bX/6Fz6ny5EGTXYltMocqg4xFAQZtnO3DHWWXi8RiuN7cQ==",
"version": "5.0.6",
"resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-5.0.6.tgz",
"integrity": "sha512-kLpxurY4Z4r9sgMsyG0Z9uzsBlgiU/EFKhj/h91/8yHu0edo7XuixOIH3VcJ8kkxs6/jPzoI6U9Vj3WqbMQ94g==",
"dev": true,
"license": "MIT",
"dependencies": {
@@ -1432,12 +1432,12 @@
}
},
"node_modules/express-rate-limit": {
"version": "8.3.2",
"resolved": "https://registry.npmjs.org/express-rate-limit/-/express-rate-limit-8.3.2.tgz",
"integrity": "sha512-77VmFeJkO0/rvimEDuUC5H30oqUC4EyOhyGccfqoLebB0oiEYfM7nwPrsDsBL1gsTpwfzX8SFy2MT3TDyRq+bg==",
"version": "8.5.2",
"resolved": "https://registry.npmjs.org/express-rate-limit/-/express-rate-limit-8.5.2.tgz",
"integrity": "sha512-5Kb34ipNX694DH48vN9irak1Qx30nb0PLYHXfJgw4YEjiC3ZEmZJhwOp+VfiCYwFzvFTdB9QkArYS5kXa2cx2A==",
"license": "MIT",
"dependencies": {
"ip-address": "10.1.0"
"ip-address": "^10.2.0"
},
"engines": {
"node": ">= 16"
@@ -1470,9 +1470,9 @@
"license": "MIT"
},
"node_modules/fast-uri": {
"version": "3.1.0",
"resolved": "https://registry.npmjs.org/fast-uri/-/fast-uri-3.1.0.tgz",
"integrity": "sha512-iPeeDKJSWf4IEOasVVrknXpaBV0IApz/gp7S2bb7Z4Lljbl2MGJRqInZiUrQwV16cpzw/D3S5j5Julj/gT52AA==",
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"resolved": "https://registry.npmjs.org/fast-uri/-/fast-uri-3.1.2.tgz",
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"funding": [
{
"type": "github",
@@ -1705,9 +1705,9 @@
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},
"node_modules/hono": {
"version": "4.12.16",
"resolved": "https://registry.npmjs.org/hono/-/hono-4.12.16.tgz",
"integrity": "sha512-jN0ZewiNAWSe5khM3EyCmBb250+b40wWbwNILNfEvq84VREWwOIkuUsFONk/3i3nqkz7Oe1PcpM2mwQEK2L9Kg==",
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"resolved": "https://registry.npmjs.org/hono/-/hono-4.12.23.tgz",
"integrity": "sha512-eIaZ9qDgu7XV0pxOCrg7/WhnQ6Ivm22UcxhXx/A3dcbqbbYgBEkc6e/J/s7j2tS96zoB0S9VBdLwQNCWwUo4LA==",
"license": "MIT",
"engines": {
"node": ">=16.9.0"
@@ -1783,9 +1783,9 @@
"license": "ISC"
},
"node_modules/ip-address": {
"version": "10.1.0",
"resolved": "https://registry.npmjs.org/ip-address/-/ip-address-10.1.0.tgz",
"integrity": "sha512-XXADHxXmvT9+CRxhXg56LJovE+bmWnEWB78LB83VZTprKTmaC5QfruXocxzTZ2Kl0DNwKuBdlIhjL8LeY8Sf8Q==",
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"resolved": "https://registry.npmjs.org/ip-address/-/ip-address-10.2.0.tgz",
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"license": "MIT",
"engines": {
"node": ">= 12"
@@ -2267,9 +2267,9 @@
}
},
"node_modules/qs": {
"version": "6.15.1",
"resolved": "https://registry.npmjs.org/qs/-/qs-6.15.1.tgz",
"integrity": "sha512-6YHEFRL9mfgcAvql/XhwTvf5jKcOiiupt2FiJxHkiX1z4j7WL8J/jRHYLluORvc1XxB5rV20KoeK00gVJamspg==",
"version": "6.15.2",
"resolved": "https://registry.npmjs.org/qs/-/qs-6.15.2.tgz",
"integrity": "sha512-Rzq0KEyX/w/tEybncDgdkZrJgVUsUMk3xjh3t5bv3S1HTAtg+uOYt72+ZfwiQwKdysThkTBdL/rTi6HDmX9Ddw==",
"license": "BSD-3-Clause",
"dependencies": {
"side-channel": "^1.1.0"

65
python/commands/library_symbol.py
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@@ -8,6 +8,7 @@ and providing search functionality for component selection.
import logging
import os
import re
import threading
from dataclasses import asdict, dataclass
from pathlib import Path
from typing import Dict, List, Optional
@@ -54,22 +55,37 @@ class SymbolLibraryManager:
self.project_path = project_path
self.libraries: Dict[str, str] = {} # nickname -> path mapping
self.symbol_cache: Dict[str, List[SymbolInfo]] = {} # library -> [SymbolInfo]
self._cache_lock = threading.Lock()
self._load_libraries()
self._warm_cache()
def _warm_cache(self) -> None:
"""Pre-parse all symbol libraries so the first search is fast.
"""Pre-parse all symbol libraries in the background so the first search
is fast.
Without this, the first ``search_symbols`` call parses every
.kicad_sym file on demand, which can take 30-120 s across
200+ libraries. By populating the cache here (during startup,
before the READY handshake) the cost is paid once.
Without warming, the first ``search_symbols`` call parses every
.kicad_sym file on demand, which can take tens of seconds across
200+ libraries. Warming pays that cost ahead of time.
Crucially this runs on a daemon thread so it does NOT block
``__init__``. The interface is constructed before the process emits
its READY handshake to the TypeScript host; warming synchronously here
delayed (and on large libraries effectively prevented) that handshake,
so the MCP server never finished starting. ``list_symbols`` is
cache-locked, so on-demand parses race-free with this background warm.
"""
for nickname in list(self.libraries.keys()):
try:
self.list_symbols(nickname)
except Exception:
logger.debug("Skipping unparseable library: %s", nickname)
def _warm() -> None:
for nickname in list(self.libraries.keys()):
try:
self.list_symbols(nickname)
except Exception:
logger.debug("Skipping unparseable library: %s", nickname)
logger.info("Symbol cache warm-up complete (%d libraries)", len(self.libraries))
threading.Thread(
target=_warm, name="symbol-cache-warmup", daemon=True
).start()
def _load_libraries(self) -> None:
"""Load libraries from sym-lib-table files"""
@@ -287,13 +303,27 @@ class SymbolLibraryManager:
# Find the start position of this symbol
start_pos = match.start()
# Walk forward tracking parenthesis depth to find the true end of the block
# Walk forward tracking parenthesis depth to find the true end of
# the block. Parens inside quoted strings (e.g. a Description like
# "MCU (LQFP-64)") must be ignored, otherwise the depth counter
# never rebalances and the walk runs to EOF for every symbol —
# turning a multi-MB library into an O(n^2) scan (minutes per file)
# and falsely flagging well-formed symbols as malformed.
depth = 0
i = start_pos
end_pos = start_pos
in_string = False
while i < len(content):
ch = content[i]
if ch == "(":
if in_string:
if ch == "\\":
i += 2 # skip escaped char
continue
if ch == '"':
in_string = False
elif ch == '"':
in_string = True
elif ch == "(":
depth += 1
elif ch == ")":
depth -= 1
@@ -373,8 +403,9 @@ class SymbolLibraryManager:
List of SymbolInfo objects
"""
# Check cache first
if library_nickname in self.symbol_cache:
return self.symbol_cache[library_nickname]
cached = self.symbol_cache.get(library_nickname)
if cached is not None:
return cached
library_path = self.libraries.get(library_nickname)
if not library_path:
@@ -384,8 +415,10 @@ class SymbolLibraryManager:
# Parse the library file
symbols = self._parse_kicad_sym_file(library_path, library_nickname)
# Cache the results
self.symbol_cache[library_nickname] = symbols
# Cache the results. Guarded so an on-demand parse and the background
# warm-up thread can't corrupt the dict mid-update.
with self._cache_lock:
self.symbol_cache[library_nickname] = symbols
return symbols

0
setup-macos.sh Normal file → Executable file
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