Codex
51 lines
2.4 KiB
JavaScript
51 lines
2.4 KiB
JavaScript
import { readFileSync } from "node:fs";
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import https from "node:https";
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const namespace = process.env.NAMESPACE || "";
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const configMap = process.env.CONFIGMAP || "";
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const patch = JSON.parse(Buffer.from(process.env.PATCH_B64 || "", "base64").toString("utf8"));
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const host = process.env.KUBERNETES_SERVICE_HOST;
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const port = Number(process.env.KUBERNETES_SERVICE_PORT || "443");
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const token = readFileSync("/var/run/secrets/kubernetes.io/serviceaccount/token", "utf8").trim();
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const ca = readFileSync("/var/run/secrets/kubernetes.io/serviceaccount/ca.crt");
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function request(method, path, body, contentType = "application/json") {
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return new Promise((resolve, reject) => {
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const headers = { authorization: `Bearer ${token}` };
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const payload = body === undefined ? null : typeof body === "string" ? body : JSON.stringify(body);
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if (payload !== null) {
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headers["content-type"] = contentType;
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headers["content-length"] = Buffer.byteLength(payload);
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}
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const req = https.request({ host, port, path, method, ca, headers }, (res) => {
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let text = "";
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res.setEncoding("utf8");
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res.on("data", (chunk) => { text += chunk; });
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res.on("end", () => resolve({ status: res.statusCode || 0, text }));
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});
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req.on("error", reject);
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if (payload !== null) req.write(payload);
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req.end();
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});
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}
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const path = `/api/v1/namespaces/${encodeURIComponent(namespace)}/configmaps/${encodeURIComponent(configMap)}`;
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const before = await request("GET", path);
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if (before.status === 404) {
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process.stdout.write(JSON.stringify({ ok: true, present: false, patched: false, reason: "state-configmap-not-found", parsedDownstreamCliOutput: false }));
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process.exit(0);
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}
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if (before.status < 200 || before.status >= 300) throw new Error(before.text || `kube api GET configmap status ${before.status}`);
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const beforeObject = JSON.parse(before.text);
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const result = await request("PATCH", path, patch, "application/merge-patch+json");
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if (result.status < 200 || result.status >= 300) throw new Error(result.text || `kube api PATCH configmap status ${result.status}`);
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const afterObject = JSON.parse(result.text);
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process.stdout.write(JSON.stringify({
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ok: true,
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present: true,
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patched: true,
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beforeResourceVersion: beforeObject?.metadata?.resourceVersion || null,
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afterResourceVersion: afterObject?.metadata?.resourceVersion || null,
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parsedDownstreamCliOutput: false,
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}));
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