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fix(runner): retry MCP init for slow Python startup
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Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Alejandro Gutiérrez
2026-04-08 15:37:04 +01:00
parent c327c282e3
commit 4ae6a86bf6
1 changed files with 11 additions and 8 deletions
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11
apps/runner/supervisor.mjs
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@@ -278,15 +278,18 @@ const server = createServer(async (req, res) => {
const svc2 = { name, sourcePath: svcSourcePath, runtime: svcRuntime, env: svcEnv || {}, process: null, pid: null, tools: [], status: "running", pending: new Map(), logs: [], restarts: 0, healthFailures: 0, _npxBin: uvxBinPath }; const svc2 = { name, sourcePath: svcSourcePath, runtime: svcRuntime, env: svcEnv || {}, process: null, pid: null, tools: [], status: "running", pending: new Map(), logs: [], restarts: 0, healthFailures: 0, _npxBin: uvxBinPath };
services.set(name, svc2); services.set(name, svc2);
spawnService(svc2); spawnService(svc2);
await new Promise(r => setTimeout(r, 1500)); // Python MCPs take longer to start — retry init with backoff
let initErr = null;
for (let attempt = 0; attempt < 3; attempt++) {
await new Promise(r => setTimeout(r, 1500 + attempt * 1000));
try { try {
svc2.tools = await initMcp(svc2); svc2.tools = await initMcp(svc2);
console.log(`[runner] ${name} ready (uvx), ${svc2.tools.length} tools`); console.log(`[runner] ${name} ready (uvx), ${svc2.tools.length} tools`);
return json(res, 200, { status: "running", tools: svc2.tools }); return json(res, 200, { status: "running", tools: svc2.tools });
} catch (e) { } catch (e) { initErr = e; }
svc2.status = "failed"; svc2.logs.push(`MCP init failed: ${e.message}`);
return json(res, 500, { error: e.message, logs: svc2.logs.slice(-10) });
} }
svc2.status = "failed"; svc2.logs.push(`MCP init failed after 3 attempts: ${initErr?.message}`);
return json(res, 500, { error: initErr?.message, logs: svc2.logs.slice(-10) });
} else if (!svcSourcePath) { } else if (!svcSourcePath) {
return json(res, 400, { error: "one of sourcePath, gitUrl, or npxPackage required" }); return json(res, 400, { error: "one of sourcePath, gitUrl, or npxPackage required" });
} }