mirror of
https://github.com/oven-sh/bun
synced 2026-02-02 15:08:46 +00:00
68 lines
2.6 KiB
TypeScript
68 lines
2.6 KiB
TypeScript
import fs from "node:fs";
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import { tmpdir } from "node:os";
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import { basename, join } from "node:path";
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import { parseArgs } from "node:util";
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// usage: bun debug-coredump.ts
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// -p <PID of the test that crashed> (buildkite should show this)
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// -b <URL to the bun-profile.zip artifact for the appropriate platform>
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// -c <URL to the bun-cores.tar.gz.age artifact for the appropriate platform>
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// -d <debugger> (default: lldb)
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const {
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values: { pid: stringPid, ["build-url"]: buildUrl, ["cores-url"]: coresUrl, debugger: debuggerPath },
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} = parseArgs({
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options: {
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pid: { type: "string", short: "p" },
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["build-url"]: { type: "string", short: "b" },
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["cores-url"]: { type: "string", short: "c" },
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debugger: { type: "string", short: "d", default: "lldb" },
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},
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});
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if (stringPid === undefined) throw new Error("no PID given");
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const pid = parseInt(stringPid);
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if (buildUrl === undefined) throw new Error("no build-url given");
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if (coresUrl === undefined) throw new Error("no cores-url given");
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if (!process.env.AGE_CORES_IDENTITY?.startsWith("AGE-SECRET-KEY-"))
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throw new Error("no identity given in $AGE_CORES_IDENTITY");
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const id = Bun.hash(buildUrl + coresUrl).toString(36);
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const dir = join(tmpdir(), `debug-coredump-${id}.tmp`);
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fs.mkdirSync(dir, { recursive: true });
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if (!fs.existsSync(join(dir, "bun-profile")) || !fs.existsSync(join(dir, `bun-${pid}.core`))) {
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console.log("downloading bun-profile.zip");
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const zip = await (await fetch(buildUrl)).arrayBuffer();
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await Bun.write(join(dir, "bun-profile.zip"), zip);
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// -j: junk paths (don't create directories when extracting)
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// -o: overwrite without prompting
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// -d: extract to this directory instead of cwd
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await Bun.$`unzip -j -o ${join(dir, "bun-profile.zip")} -d ${dir}`;
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console.log("downloading cores");
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const cores = await (await fetch(coresUrl)).arrayBuffer();
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await Bun.$`bash -c ${`age -d -i <(echo "$AGE_CORES_IDENTITY")`} < ${cores} | tar -zxvC ${dir}`;
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console.log("moving cores out of nested directory");
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for await (const file of new Bun.Glob("bun-cores-*/*.core").scan(dir)) {
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fs.renameSync(join(dir, file), join(dir, basename(file)));
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}
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} else {
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console.log(`already downloaded in ${dir}`);
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}
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const desiredCore = join(dir, (await new Bun.Glob(`*${pid}.core`).scan(dir).next()).value);
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const args = [debuggerPath, "--core", desiredCore, join(dir, "bun-profile")];
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console.log("launching debugger:");
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console.log(args.map(Bun.$.escape).join(" "));
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const proc = Bun.spawn(args, {
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stdin: "inherit",
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stdout: "inherit",
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stderr: "inherit",
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});
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await proc.exited;
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process.exit(proc.exitCode);
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