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<span class="cline-any cline-neutral">&nbsp;</span></td><td class="text"><pre class="prettyprint lang-js">import * as k8s from "@kubernetes/client-node";
import { readFileSync } from "node:fs";
&nbsp;
/**
* Cached self-pod introspection result. Queried once on first execute(),
* then reused for all subsequent Job builds so every Job inherits the
* Deployment's image, imagePullSecrets, DNS config, and PVC claim.
*/
export interface SelfPodSecretVolume {
volumeName: string;
secretName: string;
mountPath: string;
defaultMode: number | undefined;
}
&nbsp;
export interface SelfPodInfo {
namespace: string;
image: string;
imagePullSecrets: Array&lt;{ name: string }&gt;;
dnsConfig: k8s.V1PodDNSConfig | undefined;
pvcClaimName: string | null;
secretVolumes: SelfPodSecretVolume[];
/** Env vars inherited from the Deployment container. */
inheritedEnv: Record&lt;string, string&gt;;
}
&nbsp;
/** Keys forwarded from the Deployment container env into Job pods. */
const INHERITED_ENV_KEYS = <span class="cstat-no" title="statement not covered" >[</span>
"CLAUDE_CODE_USE_BEDROCK",
"AWS_REGION",
"AWS_BEARER_TOKEN_BEDROCK",
"ANTHROPIC_API_KEY",
"OPENAI_API_KEY",
"PAPERCLIP_API_URL",
];
&nbsp;
let cachedSelfPod: SelfPodInfo | null = <span class="cstat-no" title="statement not covered" >null;</span>
&nbsp;
/**
* Cache keyed by kubeconfig path (empty string = in-cluster).
* Supports multiple agents with different kubeconfigs.
*/
const kcCache = <span class="cstat-no" title="statement not covered" >new Map&lt;string, k8s.KubeConfig&gt;();</span>
&nbsp;
function <span class="fstat-no" title="function not covered" >getKubeConfig(k</span>ubeconfigPath?: string): k8s.KubeConfig {
const key = <span class="cstat-no" title="statement not covered" >kubeconfigPath ?? "";</span>
let kc = <span class="cstat-no" title="statement not covered" >kcCache.get(key);</span>
<span class="cstat-no" title="statement not covered" > if (!kc) {</span>
<span class="cstat-no" title="statement not covered" > kc = new k8s.KubeConfig();</span>
<span class="cstat-no" title="statement not covered" > if (kubeconfigPath) {</span>
<span class="cstat-no" title="statement not covered" > kc.loadFromFile(kubeconfigPath);</span>
} else {
<span class="cstat-no" title="statement not covered" > kc.loadFromCluster();</span>
}
<span class="cstat-no" title="statement not covered" > kcCache.set(key, kc);</span>
}
<span class="cstat-no" title="statement not covered" > return kc;</span>
}
&nbsp;
export function <span class="fstat-no" title="function not covered" >getBatchApi(k</span>ubeconfigPath?: string): k8s.BatchV1Api {
<span class="cstat-no" title="statement not covered" > return getKubeConfig(kubeconfigPath).makeApiClient(k8s.BatchV1Api);</span>
}
&nbsp;
export function <span class="fstat-no" title="function not covered" >getCoreApi(k</span>ubeconfigPath?: string): k8s.CoreV1Api {
<span class="cstat-no" title="statement not covered" > return getKubeConfig(kubeconfigPath).makeApiClient(k8s.CoreV1Api);</span>
}
&nbsp;
export function <span class="fstat-no" title="function not covered" >getAuthzApi(k</span>ubeconfigPath?: string): k8s.AuthorizationV1Api {
<span class="cstat-no" title="statement not covered" > return getKubeConfig(kubeconfigPath).makeApiClient(k8s.AuthorizationV1Api);</span>
}
&nbsp;
export function <span class="fstat-no" title="function not covered" >getLogApi(k</span>ubeconfigPath?: string): k8s.Log {
<span class="cstat-no" title="statement not covered" > return new k8s.Log(getKubeConfig(kubeconfigPath));</span>
}
&nbsp;
/**
* Read the current pod's namespace. Checks (in order):
* 1. PAPERCLIP_NAMESPACE env var (set explicitly in Deployment)
* 2. Service account namespace file (standard in-cluster path)
* 3. POD_NAMESPACE env var (Downward API convention)
* Falls back to "default" only if none of the above are available.
*/
function <span class="fstat-no" title="function not covered" >readInClusterNamespace(): string {</span>
const fromEnv = <span class="cstat-no" title="statement not covered" >process.env.PAPERCLIP_NAMESPACE ?? process.env.POD_NAMESPACE;</span>
<span class="cstat-no" title="statement not covered" > if (fromEnv?.trim()) <span class="cstat-no" title="statement not covered" >return fromEnv.trim();</span></span>
<span class="cstat-no" title="statement not covered" > try {</span>
<span class="cstat-no" title="statement not covered" > return readFileSync("/var/run/secrets/kubernetes.io/serviceaccount/namespace", "utf-8").trim();</span>
} catch {
<span class="cstat-no" title="statement not covered" > return "default";</span>
}
}
&nbsp;
/**
* Query the K8s API for our own pod spec and cache the result.
* Extracts image, imagePullSecrets, dnsConfig, PVC claim name,
* and environment variables to forward to Job pods.
*/
export async function <span class="fstat-no" title="function not covered" >getSelfPodInfo(k</span>ubeconfigPath?: string): Promise&lt;SelfPodInfo&gt; {
<span class="cstat-no" title="statement not covered" > if (cachedSelfPod) <span class="cstat-no" title="statement not covered" >return cachedSelfPod;</span></span>
&nbsp;
const hostname = <span class="cstat-no" title="statement not covered" >process.env.HOSTNAME;</span>
<span class="cstat-no" title="statement not covered" > if (!hostname) {</span>
<span class="cstat-no" title="statement not covered" > throw new Error("claude_k8s: HOSTNAME env var not set — cannot introspect running pod");</span>
}
&nbsp;
const namespace = <span class="cstat-no" title="statement not covered" >readInClusterNamespace();</span>
const coreApi = <span class="cstat-no" title="statement not covered" >getCoreApi(kubeconfigPath);</span>
const pod = <span class="cstat-no" title="statement not covered" >await coreApi.readNamespacedPod({ name: hostname, namespace });</span>
&nbsp;
const spec = <span class="cstat-no" title="statement not covered" >pod.spec;</span>
<span class="cstat-no" title="statement not covered" > if (!spec) {</span>
<span class="cstat-no" title="statement not covered" > throw new Error(`claude_k8s: pod ${hostname} has no spec`);</span>
}
&nbsp;
const mainContainer = <span class="cstat-no" title="statement not covered" >spec.containers[0];</span>
<span class="cstat-no" title="statement not covered" > if (!mainContainer?.image) {</span>
<span class="cstat-no" title="statement not covered" > throw new Error(`claude_k8s: pod ${hostname} has no container image`);</span>
}
&nbsp;
// Find PVC claim name from volumes mounted at /paperclip
let pvcClaimName: string | null = <span class="cstat-no" title="statement not covered" >null;</span>
const dataMount = <span class="cstat-no" title="statement not covered" >mainContainer.volumeMounts?.<span class="fstat-no" title="function not covered" >find(</span></span>
(vm) =&gt; <span class="cstat-no" title="statement not covered" >vm.mountPath === "/paperclip",</span>
);
<span class="cstat-no" title="statement not covered" > if (dataMount) {</span>
const volume = <span class="cstat-no" title="statement not covered" >spec.volumes?.<span class="fstat-no" title="function not covered" >find((v</span>) =&gt; <span class="cstat-no" title="statement not covered" >v.name === dataMount.name);</span></span>
<span class="cstat-no" title="statement not covered" > pvcClaimName = volume?.persistentVolumeClaim?.claimName ?? null;</span>
}
&nbsp;
// Discover secret volumes mounted on the main container
const secretVolumes: SelfPodSecretVolume[] = <span class="cstat-no" title="statement not covered" >[];</span>
<span class="cstat-no" title="statement not covered" > for (const vm of mainContainer.volumeMounts ?? []) {</span>
const vol = <span class="cstat-no" title="statement not covered" >spec.volumes?.<span class="fstat-no" title="function not covered" >find((v</span>) =&gt; <span class="cstat-no" title="statement not covered" >v.name === vm.name);</span></span>
<span class="cstat-no" title="statement not covered" > if (vol?.secret?.secretName) {</span>
<span class="cstat-no" title="statement not covered" > secretVolumes.push({</span>
volumeName: vm.name,
secretName: vol.secret.secretName,
mountPath: vm.mountPath,
defaultMode: vol.secret.defaultMode,
});
}
}
&nbsp;
// Collect inherited env vars from process.env (these came from the Deployment spec)
const inheritedEnv: Record&lt;string, string&gt; = <span class="cstat-no" title="statement not covered" >{};</span>
<span class="cstat-no" title="statement not covered" > for (const key of INHERITED_ENV_KEYS) {</span>
const value = <span class="cstat-no" title="statement not covered" >process.env[key];</span>
<span class="cstat-no" title="statement not covered" > if (value !== undefined) {</span>
<span class="cstat-no" title="statement not covered" > inheritedEnv[key] = value;</span>
}
}
&nbsp;
<span class="cstat-no" title="statement not covered" > cachedSelfPod = {</span>
namespace,
image: mainContainer.image,
imagePullSecrets: (spec.imagePullSecrets ?? []).<span class="fstat-no" title="function not covered" >map((s</span>) =&gt; (<span class="cstat-no" title="statement not covered" >{</span>
name: s.name ?? "",
})).<span class="fstat-no" title="function not covered" >filter((s</span>) =&gt; <span class="cstat-no" title="statement not covered" >s.name.length &gt; 0),</span>
dnsConfig: spec.dnsConfig,
pvcClaimName,
secretVolumes,
inheritedEnv,
};
&nbsp;
<span class="cstat-no" title="statement not covered" > return cachedSelfPod;</span>
}
&nbsp;
/** Reset cached state — useful for tests. */
export function <span class="fstat-no" title="function not covered" >resetCache(): void {</span>
<span class="cstat-no" title="statement not covered" > kcCache.clear();</span>
<span class="cstat-no" title="statement not covered" > cachedSelfPod = null;</span>
}
&nbsp;</pre></td></tr></table></pre>
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