fix: support follower state helper planes
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@@ -113,6 +113,8 @@ The branch follower must not parse downstream CLI stdout/stderr, `kubectl` human
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In-cluster controller and native helper scripts must not require a `kubectl` binary in the image. Native helpers that read or write ConfigMaps, Jobs, PipelineRuns, Argo Applications, Pods or logs must use the serviceaccount token and Kubernetes HTTPS API directly, or a shared native helper that does the same. A missing `kubectl` binary is a product defect in the helper, not a node problem. Operator-side `kubectl` through the controlled CLI/trans boundary remains acceptable only as a transport/debug wrapper.
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Native helper scripts that are reused in both execution planes must make the plane explicit. Inside a Pod/Job they use serviceaccount HTTPS API; from the operator/trans boundary they may use the controlled `kubectl` transport. A helper must not assume serviceaccount files exist on the target node, and must not assume `kubectl` exists inside the controller image.
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The controller automatic loop submits trigger work without a blocking wait; later loops close out via the native state objects above. Failed state must not dedupe a source commit forever: retries may reuse deterministic native objects for the same source commit, and a new compact observation should be able to move the follower back into triggering or closeout.
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State ConfigMaps must stay bounded and human-queryable. Store compact summaries, stage refs, conditions, short messages, and drill-down object names; do not store full API payloads or long log dumps. Cleanup is an explicit operator operation for stale/broken state and must not be required for normal convergence.
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@@ -1,4 +1,6 @@
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import { readFileSync } from "node:fs";
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import { execFileSync } from "node:child_process";
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import { existsSync } 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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@@ -6,10 +8,13 @@ const configMap = process.env.CONFIGMAP || "";
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const followerId = process.env.FOLLOWER_ID || "";
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const specRef = process.env.SPEC_REF || "";
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const stateJson = Buffer.from(process.env.STATE_B64 || "", "base64").toString("utf8");
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const tokenPath = "/var/run/secrets/kubernetes.io/serviceaccount/token";
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const caPath = "/var/run/secrets/kubernetes.io/serviceaccount/ca.crt";
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const inCluster = Boolean(process.env.KUBERNETES_SERVICE_HOST && existsSync(tokenPath) && existsSync(caPath));
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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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const token = inCluster ? readFileSync(tokenPath, "utf8").trim() : "";
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const ca = inCluster ? readFileSync(caPath) : null;
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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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@@ -32,6 +37,7 @@ function request(method, path, body, contentType = "application/json") {
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}
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async function readConfigMap() {
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if (!inCluster) return readConfigMapViaKubectl();
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const result = await request("GET", `/api/v1/namespaces/${encodeURIComponent(namespace)}/configmaps/${encodeURIComponent(configMap)}`);
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if (result.status === 404) return null;
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if (result.status < 200 || result.status >= 300) throw new Error(result.text || `kube api GET configmap status ${result.status}`);
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@@ -46,11 +52,26 @@ async function ensureConfigMap() {
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metadata: { name: configMap, namespace },
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data: { _createdAt: new Date().toISOString(), _specRef: specRef },
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};
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if (!inCluster) {
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execFileSync("kubectl", ["-n", namespace, "apply", "-f", "-"], { input: JSON.stringify(object), encoding: "utf8", stdio: ["pipe", "pipe", "pipe"] });
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return;
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}
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const result = await request("POST", `/api/v1/namespaces/${encodeURIComponent(namespace)}/configmaps`, object);
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if (result.status === 409) return;
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if (result.status < 200 || result.status >= 300) throw new Error(result.text || `kube api POST configmap status ${result.status}`);
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}
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function readConfigMapViaKubectl() {
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try {
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const stdout = execFileSync("kubectl", ["-n", namespace, "get", "configmap", configMap, "-o", "json"], { encoding: "utf8", stdio: ["ignore", "pipe", "pipe"] });
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return JSON.parse(stdout);
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} catch (error) {
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const stderr = String(error?.stderr || error?.message || "");
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if (/not found/i.test(stderr)) return null;
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throw error;
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}
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}
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function stringOrNull(value) {
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return typeof value === "string" && value.length > 0 ? value : null;
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}
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@@ -122,8 +143,12 @@ const patch = {
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_specRef: specRef,
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},
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};
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const patchResult = await request("PATCH", `/api/v1/namespaces/${encodeURIComponent(namespace)}/configmaps/${encodeURIComponent(configMap)}`, patch, "application/merge-patch+json");
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if (patchResult.status < 200 || patchResult.status >= 300) throw new Error(patchResult.text || `kube api PATCH configmap status ${patchResult.status}`);
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if (inCluster) {
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const patchResult = await request("PATCH", `/api/v1/namespaces/${encodeURIComponent(namespace)}/configmaps/${encodeURIComponent(configMap)}`, patch, "application/merge-patch+json");
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if (patchResult.status < 200 || patchResult.status >= 300) throw new Error(patchResult.text || `kube api PATCH configmap status ${patchResult.status}`);
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} else {
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execFileSync("kubectl", ["-n", namespace, "patch", "configmap", configMap, "--type", "merge", "-p", JSON.stringify(patch)], { encoding: "utf8", stdio: ["ignore", "pipe", "pipe"] });
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}
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const updated = await readConfigMap();
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process.stdout.write(JSON.stringify({
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ok: true,
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@@ -1,14 +1,19 @@
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import { readFileSync } from "node:fs";
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import { execFileSync } from "node:child_process";
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import { existsSync } 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 followerIds = parseFollowerIds(process.env.FOLLOWERS_JSON || "[]");
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const maxTimingStages = Number(process.env.MAX_TIMING_STAGES || "24");
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const tokenPath = "/var/run/secrets/kubernetes.io/serviceaccount/token";
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const caPath = "/var/run/secrets/kubernetes.io/serviceaccount/ca.crt";
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const inCluster = Boolean(process.env.KUBERNETES_SERVICE_HOST && existsSync(tokenPath) && existsSync(caPath));
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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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const token = inCluster ? readFileSync(tokenPath, "utf8").trim() : "";
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const ca = inCluster ? readFileSync(caPath) : null;
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function parseFollowerIds(text) {
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try {
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@@ -40,6 +45,7 @@ function request(method, path, body, contentType = "application/json") {
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}
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async function readConfigMap() {
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if (!inCluster) return readConfigMapViaKubectl();
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try {
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const result = await request("GET", `/api/v1/namespaces/${encodeURIComponent(namespace)}/configmaps/${encodeURIComponent(configMap)}`);
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if (result.status === 404) return { ok: true, present: false, object: null, error: result.text };
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@@ -50,6 +56,21 @@ async function readConfigMap() {
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}
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}
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function readConfigMapViaKubectl() {
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try {
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const stdout = execFileSync("kubectl", ["-n", namespace, "get", "configmap", configMap, "-o", "json"], {
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encoding: "utf8",
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maxBuffer: 16 * 1024 * 1024,
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stdio: ["ignore", "pipe", "pipe"],
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});
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return { ok: true, present: true, object: JSON.parse(stdout), error: "" };
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} catch (error) {
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const stderr = String(error?.stderr || error?.message || "");
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if (/not found/i.test(stderr)) return { ok: true, present: false, object: null, error: stderr };
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return { ok: false, present: false, object: null, error: stderr || "kubectl configmap read failed" };
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}
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}
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function compactStateText(text) {
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if (typeof text !== "string" || text.length === 0) return null;
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let state;
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