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retry watch when it makes sense

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Signed-off-by: Jari Kolehmainen <jari.kolehmainen@gmail.com>
This commit is contained in:
Jari Kolehmainen 2021-02-08 17:34:04 +02:00
parent 701259695c
commit 73195c2f14
2 changed files with 26 additions and 8 deletions
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29
src/renderer/api/kube-api.ts
View File

@ -96,6 +96,7 @@ export function ensureObjectSelfLink(api: KubeApi, object: KubeJsonApiData) {
type KubeApiWatchOptions = {
namespace: string;
callback?: (data: IKubeWatchEvent) => void;
abortController?: AbortController
};
export class KubeApi<T extends KubeObject = any> {
@ -366,13 +367,31 @@ export class KubeApi<T extends KubeObject = any> {
}
watch(opts: KubeApiWatchOptions = { namespace: "" }): () => void {
const { namespace, callback } = opts;
if (!opts.abortController) {
opts.abortController = new AbortController();
}
const { abortController, namespace, callback } = opts;
const watchUrl = this.getWatchUrl(namespace);
const abortController = new AbortController();
const responsePromise = this.request.getReadableStream(watchUrl, null, { signal: abortController.signal });
let disposed = false;
responsePromise.then((response) => {
if (!response.ok && !disposed) {
if (response.status === 410) { // resourceVersion has gone
setTimeout(() => {
this.refreshResourceVersion().then(() => {
this.watch({...opts, abortController});
});
}, 1000);
} else if (response.status >= 500) { // k8s is having hard time
setTimeout(() => {
this.watch({...opts, abortController});
}, 5000);
}
return;
}
const nodeStream = new ReadableWebToNodeStream(response.body);
const stream = byline(nodeStream);
@ -392,13 +411,9 @@ export class KubeApi<T extends KubeObject = any> {
stream.on("close", () => {
setTimeout(() => {
if (!disposed) this.watch({namespace, callback});
if (!disposed) this.watch({...opts, namespace, callback});
}, 1000);
});
stream.on("error", (error) => {
console.error("stream error", error);
});
}, (error) => {
if (error instanceof DOMException) return; // AbortController rejects, we can ignore it

5
src/renderer/kube-object.store.ts
View File

@ -267,6 +267,7 @@ export abstract class KubeObjectStore<T extends KubeObject = any> extends ItemSt
}
subscribe(apis = this.getSubscribeApis()) {
const abortController = new AbortController();
let disposers: {(): void}[] = [];
const callback = (data: IKubeWatchEvent) => {
@ -275,13 +276,15 @@ export abstract class KubeObjectStore<T extends KubeObject = any> extends ItemSt
if (this.context.cluster.isGlobalWatchEnabled) {
disposers = apis.map(api => api.watch({
abortController,
namespace: "",
callback: (data) => callback(data)
callback: (data) => callback(data),
}));
} else {
apis.map(api => {
this.loadedNamespaces.forEach((namespace) => {
disposers.push(api.watch({
abortController,
namespace,
callback: (data) => callback(data)
}));