everything-dev
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A consolidated product package for building Module Federation apps with oRPC APIs.
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{"version":3,"file":"process-registry.mjs","names":[],"sources":["../src/process-registry.ts"],"sourcesContent":["import { existsSync, mkdirSync, readFileSync, renameSync, rmSync, writeFileSync } from \"node:fs\";\nimport { access } from \"node:fs/promises\";\nimport { homedir } from \"node:os\";\nimport { join } from \"node:path\";\nimport { Effect } from \"effect\";\n\nexport type ProcessRole = \"standalone\" | \"workspace-parent\" | \"workspace-child\";\n\nexport interface PidEntry {\n pid: number;\n configDir: string;\n parentPid?: number;\n role: ProcessRole;\n ports: Record<string, number>;\n budget?: { min: number; max: number };\n startedAt: number;\n description: string;\n}\n\nfunction getRegistryDir(): string {\n return join(homedir(), \".cache\", \"everything-dev\");\n}\n\nfunction ensureRegistryDir(): void {\n const path = getRegistryPath();\n const dir = join(path, \"..\");\n if (!existsSync(dir)) {\n mkdirSync(dir, { recursive: true });\n }\n}\n\nexport function readRegistry(): PidEntry[] {\n const path = getRegistryPath();\n if (!existsSync(path)) return [];\n try {\n const raw = JSON.parse(readFileSync(path, \"utf-8\"));\n if (!Array.isArray(raw)) return [];\n return raw.filter(\n (entry): entry is PidEntry =>\n entry &&\n typeof entry === \"object\" &&\n typeof entry.pid === \"number\" &&\n typeof entry.configDir === \"string\" &&\n typeof entry.role === \"string\",\n );\n } catch {\n return [];\n }\n}\n\nexport function isPidAlive(pid: number): boolean {\n try {\n process.kill(pid, 0);\n return true;\n } catch (err) {\n return (err as NodeJS.ErrnoException).code !== \"ESRCH\";\n }\n}\n\nexport function pruneDead(entries: PidEntry[]): PidEntry[] {\n return entries.filter(\n (entry) => entry.pid > 1 && existsSync(entry.configDir) && isPidAlive(entry.pid),\n );\n}\n\nexport function pruneDeadEffect(entries: PidEntry[]): Effect.Effect<PidEntry[]> {\n return Effect.forEach(\n entries,\n (entry) => {\n if (entry.pid <= 1) return Effect.succeed(null);\n return Effect.gen(function* () {\n const dirExists = yield* Effect.promise(() =>\n access(entry.configDir)\n .then(() => true)\n .catch(() => false),\n );\n if (!dirExists) return null;\n if (!isPidAlive(entry.pid)) return null;\n return entry;\n });\n },\n { concurrency: \"unbounded\" },\n ).pipe(Effect.map((results) => results.filter((e): e is PidEntry => e !== null)));\n}\n\nexport function writeRegistry(entries: PidEntry[]): void {\n ensureRegistryDir();\n const path = getRegistryPath();\n const tmpPath = `${path}.tmp`;\n writeFileSync(tmpPath, `${JSON.stringify(entries, null, 2)}\\n`);\n renameSync(tmpPath, path);\n}\n\nexport function registerStandalone(entry: Omit<PidEntry, \"role\">): PidEntry {\n const live = pruneDead(readRegistry());\n const full: PidEntry = { ...entry, role: \"standalone\" };\n const withoutSelf = live.filter((existing) => existing.pid !== entry.pid);\n withoutSelf.push(full);\n writeRegistry(withoutSelf);\n return full;\n}\n\nexport function registerEntry(entry: PidEntry): void {\n const live = pruneDead(readRegistry());\n const withoutSelf = live.filter((existing) => existing.pid !== entry.pid);\n withoutSelf.push(entry);\n writeRegistry(withoutSelf);\n}\n\nexport function unregisterPid(pid: number): void {\n const live = pruneDead(readRegistry());\n const next = live.filter((entry) => entry.pid !== pid);\n if (next.length === live.length) return;\n writeRegistry(next);\n}\n\nexport function removeRegistryFile(): void {\n const path = getRegistryPath();\n if (existsSync(path)) {\n rmSync(path, { force: true });\n }\n}\n\nexport function getRegistryPath(): string {\n return process.env.BO_PID_REGISTRY_PATH ?? 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