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T
Chris Farhood c55d6c61fc feat: declare hasOutOfProcessLiveness and remove onSpawn workarounds (FAR-24) 
- Add `hasOutOfProcessLiveness: true` to createServerAdapter() so the
  reaper skips local PID checks and uses the staleness window instead.
- Remove the initial onSpawn call and all periodic keepalive onSpawn
  refreshes that were compensating for the missing flag.
- Remove POST_TERMINAL_KEEPALIVE_MS constant and keepaliveTick counter
  that backed those workarounds.
- Cast required: adapter-utils ServerAdapterModule type predates this field.
- Bump to 0.1.38.

Co-Authored-By: Paperclip <noreply@paperclip.ing>
2026-04-24 14:14:10 +00:00

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<span class="cline-any cline-neutral">&nbsp;</span></td><td class="text"><pre class="prettyprint lang-js">import { constants as fsConstants } from "node:fs";
import fs from "node:fs/promises";
import os from "node:os";
import path from "node:path";
import { createHash } from "node:crypto";
import type { AdapterExecutionContext } from "@paperclipai/adapter-utils";
import {
type PaperclipSkillEntry,
ensurePaperclipSkillSymlink,
} from "@paperclipai/adapter-utils/server-utils";
&nbsp;
export interface ClaudePromptBundle {
bundleKey: string;
/** Absolute path to the bundle root directory (contains .claude/skills/ and agent-instructions.md). */
rootDir: string;
/** Value to pass as --add-dir to the Claude CLI. */
addDir: string;
/** Path to the materialized instructions file, or null if no instructions were provided. */
instructionsFilePath: string | null;
}
&nbsp;
const DEFAULT_PAPERCLIP_INSTANCE_ID = "default";
&nbsp;
function validatePathComponent(value: string, fieldName: string): void {
if (value.trim().length === 0) throw new Error(`Invalid ${fieldName}: must not be empty`);
if (value.includes("/") || value.includes("\\")) throw new Error(`Invalid ${fieldName}: must not contain path separators`);
if (value.includes("..")) throw new Error(`Invalid ${fieldName}: must not contain ".."`);
if (value.includes("\0")) throw new Error(`Invalid ${fieldName}: must not contain null bytes`);
}
&nbsp;
function resolveManagedClaudePromptCacheRoot(companyId: string): string {
const paperclipHome =
(typeof process.env.PAPERCLIP_HOME === "string" &amp;&amp; process.env.PAPERCLIP_HOME.trim().length &gt; 0
? process.env.PAPERCLIP_HOME.trim()
: <span class="branch-1 cbranch-no" title="branch not covered" >null) ??</span>
<span class="branch-1 cbranch-no" title="branch not covered" > path.resolve(os.homedir(), ".paperclip");</span>
const instanceId =
(typeof process.env.PAPERCLIP_INSTANCE_ID === "string" &amp;&amp; process.env.PAPERCLIP_INSTANCE_ID.trim().length &gt; 0
? process.env.PAPERCLIP_INSTANCE_ID.trim()
: <span class="branch-1 cbranch-no" title="branch not covered" >null) ?? <span class="branch-1 cbranch-no" title="branch not covered" >D</span>EFAULT_PAPERCLIP_INSTANCE_ID;</span>
validatePathComponent(companyId, "companyId");
validatePathComponent(instanceId, "instanceId");
return path.resolve(paperclipHome, "instances", instanceId, "companies", companyId, "claude-prompt-cache");
}
&nbsp;
async function <span class="fstat-no" title="function not covered" >hashPathContents(</span>
candidate: string,
hash: ReturnType&lt;typeof createHash&gt;,
relativePath: string,
seenDirectories: Set&lt;string&gt;,
): Promise&lt;void&gt; {
const stat = <span class="cstat-no" title="statement not covered" >await fs.lstat(candidate);</span>
<span class="cstat-no" title="statement not covered" > if (stat.isSymbolicLink()) {</span>
<span class="cstat-no" title="statement not covered" > hash.update(`symlink:${relativePath}\n`);</span>
const resolved = <span class="cstat-no" title="statement not covered" >await fs.realpath(candidate).<span class="fstat-no" title="function not covered" >catch(() =&gt; <span class="cstat-no" title="statement not covered" >n</span>ull);</span></span>
<span class="cstat-no" title="statement not covered" > if (!resolved) {</span>
<span class="cstat-no" title="statement not covered" > hash.update("missing\n");</span>
<span class="cstat-no" title="statement not covered" > return;</span>
}
<span class="cstat-no" title="statement not covered" > await hashPathContents(resolved, hash, relativePath, seenDirectories);</span>
<span class="cstat-no" title="statement not covered" > return;</span>
}
<span class="cstat-no" title="statement not covered" > if (stat.isDirectory()) {</span>
const realDir = <span class="cstat-no" title="statement not covered" >await fs.realpath(candidate).<span class="fstat-no" title="function not covered" >catch(() =&gt; <span class="cstat-no" title="statement not covered" >c</span>andidate);</span></span>
<span class="cstat-no" title="statement not covered" > hash.update(`dir:${relativePath}\n`);</span>
<span class="cstat-no" title="statement not covered" > if (seenDirectories.has(realDir)) {</span>
<span class="cstat-no" title="statement not covered" > hash.update("loop\n");</span>
<span class="cstat-no" title="statement not covered" > return;</span>
}
<span class="cstat-no" title="statement not covered" > seenDirectories.add(realDir);</span>
const entries = <span class="cstat-no" title="statement not covered" >await fs.readdir(candidate, { withFileTypes: true });</span>
<span class="cstat-no" title="statement not covered" > entries.<span class="fstat-no" title="function not covered" >sort((a</span>, b) =&gt; <span class="cstat-no" title="statement not covered" >a.name.localeCompare(b.name))</span>;</span>
<span class="cstat-no" title="statement not covered" > for (const entry of entries) {</span>
const childRelativePath = <span class="cstat-no" title="statement not covered" >relativePath.length &gt; 0 ? `${relativePath}/${entry.name}` : entry.name;</span>
<span class="cstat-no" title="statement not covered" > await hashPathContents(path.join(candidate, entry.name), hash, childRelativePath, seenDirectories);</span>
}
<span class="cstat-no" title="statement not covered" > return;</span>
}
<span class="cstat-no" title="statement not covered" > if (stat.isFile()) {</span>
<span class="cstat-no" title="statement not covered" > hash.update(`file:${relativePath}\n`);</span>
<span class="cstat-no" title="statement not covered" > hash.update(await fs.readFile(candidate));</span>
<span class="cstat-no" title="statement not covered" > hash.update("\n");</span>
<span class="cstat-no" title="statement not covered" > return;</span>
}
<span class="cstat-no" title="statement not covered" > hash.update(`other:${relativePath}:${stat.mode}\n`);</span>
}
&nbsp;
async function buildClaudePromptBundleKey(input: {
skills: PaperclipSkillEntry[];
instructionsContents: string | null;
}): Promise&lt;string&gt; {
const hash = createHash("sha256");
hash.update("paperclip-claude-prompt-bundle:v1\n");
<span class="missing-if-branch" title="if path not taken" >I</span>if (input.instructionsContents) {
<span class="cstat-no" title="statement not covered" > hash.update("instructions\n");</span>
<span class="cstat-no" title="statement not covered" > hash.update(input.instructionsContents);</span>
<span class="cstat-no" title="statement not covered" > hash.update("\n");</span>
} else {
hash.update("instructions:none\n");
}
const sortedSkills = [...input.skills].<span class="fstat-no" title="function not covered" >sort((a</span>, b) =&gt; <span class="cstat-no" title="statement not covered" >a.runtimeName.localeCompare(b.runtimeName))</span>;
for (const entry of sortedSkills) {
<span class="cstat-no" title="statement not covered" > hash.update(`skill:${entry.key}:${entry.runtimeName}\n`);</span>
<span class="cstat-no" title="statement not covered" > await hashPathContents(entry.source, hash, entry.runtimeName, new Set());</span>
}
return hash.digest("hex");
}
&nbsp;
async function <span class="fstat-no" title="function not covered" >ensureReadableFile(t</span>argetPath: string, contents: string): Promise&lt;void&gt; {
<span class="cstat-no" title="statement not covered" > try {</span>
<span class="cstat-no" title="statement not covered" > await fs.access(targetPath, fsConstants.R_OK);</span>
<span class="cstat-no" title="statement not covered" > return;</span>
} catch {
// Fall through and materialize the file.
}
<span class="cstat-no" title="statement not covered" > await fs.mkdir(path.dirname(targetPath), { recursive: true });</span>
const tempPath = <span class="cstat-no" title="statement not covered" >`${targetPath}.${process.pid}.${Date.now()}.tmp`;</span>
<span class="cstat-no" title="statement not covered" > try {</span>
<span class="cstat-no" title="statement not covered" > await fs.writeFile(tempPath, contents, "utf8");</span>
<span class="cstat-no" title="statement not covered" > await fs.rename(tempPath, targetPath);</span>
} catch (err) {
const targetReadable = <span class="cstat-no" title="statement not covered" >await fs.access(targetPath, fsConstants.R_OK).<span class="fstat-no" title="function not covered" >then(() =&gt; <span class="cstat-no" title="statement not covered" >t</span>rue).<span class="fstat-no" title="function not covered" ></span>catch(() =&gt; <span class="cstat-no" title="statement not covered" >f</span>alse);</span></span>
<span class="cstat-no" title="statement not covered" > if (!targetReadable) <span class="cstat-no" title="statement not covered" >throw err;</span></span>
} finally {
<span class="cstat-no" title="statement not covered" > await fs.rm(tempPath, { force: true }).<span class="fstat-no" title="function not covered" >catch(() =&gt; {</span>});</span>
}
}
&nbsp;
export async function prepareClaudePromptBundle(input: {
companyId: string;
skills: PaperclipSkillEntry[];
instructionsContents: string | null;
onLog: AdapterExecutionContext["onLog"];
}): Promise&lt;ClaudePromptBundle&gt; {
const { companyId, skills, instructionsContents, onLog } = input;
const bundleKey = await buildClaudePromptBundleKey({ skills, instructionsContents });
const rootDir = path.join(resolveManagedClaudePromptCacheRoot(companyId), bundleKey);
const skillsHome = path.join(rootDir, ".claude", "skills");
await fs.mkdir(skillsHome, { recursive: true });
&nbsp;
for (const entry of skills) {
const target = <span class="cstat-no" title="statement not covered" >path.join(skillsHome, entry.runtimeName);</span>
<span class="cstat-no" title="statement not covered" > try {</span>
<span class="cstat-no" title="statement not covered" > await ensurePaperclipSkillSymlink(entry.source, target);</span>
} catch (err) {
<span class="cstat-no" title="statement not covered" > await onLog(</span>
"stderr",
`[paperclip] Failed to materialize Claude skill "${entry.key}" into ${skillsHome}: ${err instanceof Error ? err.message : String(err)}\n`,
);
}
}
&nbsp;
const instructionsFilePath = instructionsContents ? <span class="branch-0 cbranch-no" title="branch not covered" >path.join(rootDir, "agent-instructions.md") </span>: null;
<span class="missing-if-branch" title="if path not taken" >I</span>if (instructionsFilePath &amp;&amp; <span class="branch-1 cbranch-no" title="branch not covered" >instructionsContents) {</span>
<span class="cstat-no" title="statement not covered" > await ensureReadableFile(instructionsFilePath, instructionsContents);</span>
}
&nbsp;
return { bundleKey, rootDir, addDir: rootDir, instructionsFilePath };
}
&nbsp;</pre></td></tr></table></pre>
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