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mirror of https://github.com/lensapp/lens.git synced 2025-05-20 05:10:56 +00:00

Fix pods loadig under restrictive RBAC

- Significatly improve the runtime checking of values returned by the
  Kube and KubeJson APIs

- Add tests for KubeObject

- Add error handling for unexpected values from the API

Signed-off-by: Sebastian Malton <sebastian@malton.name>
This commit is contained in:
Sebastian Malton 2021-03-01 13:13:31 -05:00
parent 4f74b9aabe
commit 76d7a48baa
6 changed files with 531 additions and 160 deletions

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@ -1,13 +1,89 @@
/**
* Narrows `val` to include the property `key` (if true is returned)
* @param val The object to be tested
* @param key The key to test if it is present on the object
* @param key The key to test if it is present on the object (must be a literal for tsc to do any type meaningful)
*/
export function hasOwnProperty<V extends object, K extends PropertyKey>(val: V, key: K): val is (V & { [key in K]: unknown }) {
export function hasOwnProperty<S extends object, K extends PropertyKey>(val: S, key: K): val is (S & { [key in K]: unknown }) {
// this call syntax is for when `val` was created by `Object.create(null)`
return Object.prototype.hasOwnProperty.call(val, key);
}
export function hasOwnProperties<V extends object, K extends PropertyKey>(val: V, ...keys: K[]): val is (V & { [key in K]: unknown}) {
/**
* Narrows `val` to a static type that includes fields of names in `keys`
* @param val the value that we are trying to type narrow
* @param keys the key names (must be literals for tsc to do any type meaningful)
*/
export function hasOwnProperties<S extends object, K extends PropertyKey>(val: S, ...keys: K[]): val is (S & { [key in K]: unknown }) {
return keys.every(key => hasOwnProperty(val, key));
}
/**
* Narrows `val` to include the property `key` with type `V`
* @param val the value that we are trying to type narrow
* @param key The key to test if it is present on the object (must be a literal for tsc to do any type meaningful)
* @param isValid a function to check if the field is valid
*/
export function hasTypedProperty<S extends object, K extends PropertyKey, V>(val: S, key: K, isValid: (value: unknown) => value is V): val is (S & { [key in K]: V }) {
return hasOwnProperty(val, key) && isValid(val[key]);
}
/**
* Narrows `val` to include the property `key` with type `V | undefined` or doesn't contain it
* @param val the value that we are trying to type narrow
* @param key The key to test if it is present on the object (must be a literal for tsc to do any type meaningful)
* @param isValid a function to check if the field (when present) is valid
*/
export function hasOptionalProperty<S extends object, K extends PropertyKey, V>(val: S, key: K, isValid: (value: unknown) => value is V): val is (S & { [key in K]?: V }) {
if (hasOwnProperty(val, key)) {
return typeof val[key] === "undefined" || isValid(val[key]);
}
return true;
}
/**
* isRecord checks if `val` matches the signature `Record<T, V>` or `{ [label in T]: V }`
* @param val The value to be checked
* @param isKey a function for checking if the key is of the correct type
* @param isValue a function for checking if a value is of the correct type
*/
export function isRecord<T extends PropertyKey, V>(val: unknown, isKey: (key: unknown) => key is T, isValue: (value: unknown) => value is V): val is Record<T, V> {
return isObject(val) && Object.entries(val).every(([key, value]) => isKey(key) && isValue(value));
}
/**
* isTypedArray checks if `val` is an array and all of its entries are of type `T`
* @param val The value to be checked
* @param isEntry a function for checking if an entry is the correct type
*/
export function isTypedArray<T>(val: unknown, isEntry: (entry: unknown) => entry is T): val is T[] {
return Array.isArray(val) && val.every(isEntry);
}
/**
* checks if val is of type string
* @param val the value to be checked
*/
export function isString(val: unknown): val is string {
return typeof val === "string";
}
/**
* checks if val is of type object and isn't null
* @param val the value to be checked
*/
export function isObject(val: unknown): val is object {
return typeof val === "object" && val !== null;
}
/**
* Creates a new predicate function (with the same predicate) from `fn`. Such
* that it can be called with just the value to be tested.
*
* This is useful for when using `hasOptionalProperty` and `hasTypedProperty`
* @param fn A typescript user predicate function to be bound
* @param boundArgs the set of arguments to be passed to `fn` in the new function
*/
export function bindPredicate<FnArgs extends any[], T>(fn: (arg1: unknown, ...args: FnArgs) => arg1 is T, ...boundArgs: FnArgs): (arg1: unknown) => arg1 is T {
return (arg1: unknown): arg1 is T => fn(arg1, ...boundArgs);
}

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@ -0,0 +1,228 @@
import { KubeObject } from "../kube-object";
describe("KubeObject", () => {
describe("isJsonApiData", () => {
{
type TestCase = [any];
const tests: TestCase[] = [
[false],
[true],
[null],
[undefined],
[""],
[1],
[(): unknown => void 0],
[Symbol("hello")],
[{}],
];
it.each(tests)("should reject invalid value: %p", (input) => {
expect(KubeObject.isJsonApiData(input)).toBe(false);
});
}
{
type TestCase = [string, any];
const tests: TestCase[] = [
["kind", { apiVersion: "", metadata: {uid: "", name: "", resourceVersion: "", selfLink: ""} }],
["apiVersion", { kind: "", metadata: {uid: "", name: "", resourceVersion: "", selfLink: ""} }],
["metadata", { kind: "", apiVersion: "" }],
["metadata.uid", { kind: "", apiVersion: "", metadata: { name: "", resourceVersion: "", selfLink: ""} }],
["metadata.name", { kind: "", apiVersion: "", metadata: { uid: "", resourceVersion: "", selfLink: "" } }],
["metadata.resourceVersion", { kind: "", apiVersion: "", metadata: { uid: "", name: "", selfLink: "" } }],
];
it.each(tests)("should reject with missing: %s", (missingField, input) => {
expect(KubeObject.isJsonApiData(input)).toBe(false);
});
}
{
type TestCase = [string, any];
const tests: TestCase[] = [
["kind", { kind: 1, apiVersion: "", metadata: {} }],
["apiVersion", { apiVersion: 1, kind: "", metadata: {} }],
["metadata", { kind: "", apiVersion: "", metadata: "" }],
["metadata.uid", { kind: "", apiVersion: "", metadata: { uid: 1 } }],
["metadata.name", { kind: "", apiVersion: "", metadata: { uid: "", name: 1 } }],
["metadata.resourceVersion", { kind: "", apiVersion: "", metadata: { uid: "", name: "", resourceVersion: 1 } }],
["metadata.selfLink", { kind: "", apiVersion: "", metadata: { uid: "", name: "", resourceVersion: "", selfLink: 1 } }],
["metadata.namespace", { kind: "", apiVersion: "", metadata: { uid: "", name: "", resourceVersion: "", selfLink: "", namespace: 1 } }],
["metadata.creationTimestamp", { kind: "", apiVersion: "", metadata: { uid: "", name: "", resourceVersion: "", selfLink: "", creationTimestamp: 1 } }],
["metadata.continue", { kind: "", apiVersion: "", metadata: { uid: "", name: "", resourceVersion: "", selfLink: "", continue: 1 } }],
["metadata.finalizers", { kind: "", apiVersion: "", metadata: { uid: "", name: "", resourceVersion: "", selfLink: "", finalizers: 1 } }],
["metadata.finalizers", { kind: "", apiVersion: "", metadata: { uid: "", name: "", resourceVersion: "", selfLink: "", finalizers: [1] } }],
["metadata.finalizers", { kind: "", apiVersion: "", metadata: { uid: "", name: "", resourceVersion: "", selfLink: "", finalizers: {} } }],
["metadata.labels", { kind: "", apiVersion: "", metadata: { uid: "", name: "", resourceVersion: "", selfLink: "", labels: 1 } }],
["metadata.labels", { kind: "", apiVersion: "", metadata: { uid: "", name: "", resourceVersion: "", selfLink: "", labels: { food: 1 } } }],
["metadata.annotations", { kind: "", apiVersion: "", metadata: { uid: "", name: "", resourceVersion: "", selfLink: "", annotations: 1 } }],
["metadata.annotations", { kind: "", apiVersion: "", metadata: { uid: "", name: "", resourceVersion: "", selfLink: "", annotations: { food: 1 } } }],
];
it.each(tests)("should reject with wrong type for field: %s", (missingField, input) => {
expect(KubeObject.isJsonApiData(input)).toBe(false);
});
}
it("should accept valid KubeJsonApiData (ignoring other fields)", () => {
const valid = { kind: "", apiVersion: "", metadata: { uid: "", name: "", resourceVersion: "", selfLink: "", annotations: { food: "" } } };
expect(KubeObject.isJsonApiData(valid)).toBe(true);
});
});
describe("isPartialJsonApiData", () => {
{
type TestCase = [any];
const tests: TestCase[] = [
[false],
[true],
[null],
[undefined],
[""],
[1],
[(): unknown => void 0],
[Symbol("hello")],
];
it.each(tests)("should reject invalid value: %p", (input) => {
expect(KubeObject.isPartialJsonApiData(input)).toBe(false);
});
}
it("should accept {}", () => {
expect(KubeObject.isPartialJsonApiData({})).toBe(true);
});
{
type TestCase = [string, any];
const tests: TestCase[] = [
["kind", { apiVersion: "", metadata: { uid: "", name: "", resourceVersion: "", selfLink: "" } }],
["apiVersion", { kind: "", metadata: { uid: "", name: "", resourceVersion: "", selfLink: "" } }],
["metadata", { kind: "", apiVersion: "" }],
];
it.each(tests)("should not reject with missing top level field: %s", (missingField, input) => {
expect(KubeObject.isPartialJsonApiData(input)).toBe(true);
});
}
{
type TestCase = [string, any];
const tests: TestCase[] = [
["metadata.uid", { kind: "", apiVersion: "", metadata: { name: "", resourceVersion: "", selfLink: ""} }],
["metadata.name", { kind: "", apiVersion: "", metadata: { uid: "", resourceVersion: "", selfLink: "" } }],
["metadata.resourceVersion", { kind: "", apiVersion: "", metadata: { uid: "", name: "", selfLink: "" } }],
];
it.each(tests)("should reject with missing non-top level field: %s", (missingField, input) => {
expect(KubeObject.isPartialJsonApiData(input)).toBe(false);
});
}
{
type TestCase = [string, any];
const tests: TestCase[] = [
["kind", { kind: 1, apiVersion: "", metadata: { uid: "", name: "", resourceVersion: "", selfLink: "" } }],
["apiVersion", { apiVersion: 1, kind: "", metadata: { uid: "", name: "", resourceVersion: "", selfLink: "" } }],
["metadata", { kind: "", apiVersion: "", metadata: "" }],
["metadata.uid", { kind: "", apiVersion: "", metadata: { uid: 1, name: "", resourceVersion: "", selfLink: "" } }],
["metadata.name", { kind: "", apiVersion: "", metadata: { uid: "", name: 1, resourceVersion: "", selfLink: "" } }],
["metadata.resourceVersion", { kind: "", apiVersion: "", metadata: { uid: "", name: "", resourceVersion: 1, selfLink: "" } }],
["metadata.selfLink", { kind: "", apiVersion: "", metadata: { uid: "", name: "", resourceVersion: "", selfLink: 1 } }],
["metadata.namespace", { kind: "", apiVersion: "", metadata: { uid: "", name: "", resourceVersion: "", selfLink: "", namespace: 1 } }],
["metadata.creationTimestamp", { kind: "", apiVersion: "", metadata: { uid: "", name: "", resourceVersion: "", selfLink: "", creationTimestamp: 1 } }],
["metadata.continue", { kind: "", apiVersion: "", metadata: { uid: "", name: "", resourceVersion: "", selfLink: "", continue: 1 } }],
["metadata.finalizers", { kind: "", apiVersion: "", metadata: { uid: "", name: "", resourceVersion: "", selfLink: "", finalizers: 1 } }],
["metadata.finalizers", { kind: "", apiVersion: "", metadata: { uid: "", name: "", resourceVersion: "", selfLink: "", finalizers: [1] } }],
["metadata.finalizers", { kind: "", apiVersion: "", metadata: { uid: "", name: "", resourceVersion: "", selfLink: "", finalizers: {} } }],
["metadata.labels", { kind: "", apiVersion: "", metadata: { uid: "", name: "", resourceVersion: "", selfLink: "", labels: 1 } }],
["metadata.labels", { kind: "", apiVersion: "", metadata: { uid: "", name: "", resourceVersion: "", selfLink: "", labels: { food: 1 } } }],
["metadata.annotations", { kind: "", apiVersion: "", metadata: { uid: "", name: "", resourceVersion: "", selfLink: "", annotations: 1 } }],
["metadata.annotations", { kind: "", apiVersion: "", metadata: { uid: "", name: "", resourceVersion: "", selfLink: "", annotations: { food: 1 } } }],
];
it.each(tests)("should reject with wrong type for field: %s", (missingField, input) => {
expect(KubeObject.isPartialJsonApiData(input)).toBe(false);
});
}
it("should accept valid Partial<KubeJsonApiData> (ignoring other fields)", () => {
const valid = { kind: "", apiVersion: "", metadata: { uid: "", name: "", resourceVersion: "", selfLink: "", annotations: { food: "" } } };
expect(KubeObject.isPartialJsonApiData(valid)).toBe(true);
});
});
describe("isJsonApiDataList", () => {
function isAny(val: unknown): val is any {
return !Boolean(void val);
}
function isNotAny(val: unknown): val is any {
return Boolean(void val);
}
function isBoolean(val: unknown): val is Boolean {
return typeof val === "boolean";
}
{
type TestCase = [any];
const tests: TestCase[] = [
[false],
[true],
[null],
[undefined],
[""],
[1],
[(): unknown => void 0],
[Symbol("hello")],
[{}],
];
it.each(tests)("should reject invalid value: %p", (input) => {
expect(KubeObject.isJsonApiDataList(input, isAny)).toBe(false);
});
}
{
type TestCase = [string, any];
const tests: TestCase[] = [
["kind", { apiVersion: "", items: [], metadata: { resourceVersion: "", selfLink: "" } }],
["apiVersion", { kind: "", items: [], metadata: { resourceVersion: "", selfLink: "" } }],
["metadata", { kind: "", items: [], apiVersion: "" }],
["metadata.resourceVersion", { kind: "", items: [], apiVersion: "", metadata: { selfLink: "" } }],
];
it.each(tests)("should reject with missing: %s", (missingField, input) => {
expect(KubeObject.isJsonApiDataList(input, isAny)).toBe(false);
});
}
{
type TestCase = [string, any];
const tests: TestCase[] = [
["kind", { kind: 1, items: [], apiVersion: "", metadata: { resourceVersion: "", selfLink: "" } }],
["apiVersion", { kind: "", items: [], apiVersion: 1, metadata: { resourceVersion: "", selfLink: "" } }],
["metadata", { kind: "", items: [], apiVersion: "", metadata: 1 }],
["metadata.resourceVersion", { kind: "", items: [], apiVersion: "", metadata: { resourceVersion: 1, selfLink: "" } }],
["metadata.selfLink", { kind: "", items: [], apiVersion: "", metadata: { resourceVersion: "", selfLink: 1 } }],
["items", { kind: "", items: 1, apiVersion: "", metadata: { resourceVersion: "", selfLink: "" } }],
["items", { kind: "", items: "", apiVersion: "", metadata: { resourceVersion: "", selfLink: "" } }],
["items", { kind: "", items: {}, apiVersion: "", metadata: { resourceVersion: "", selfLink: "" } }],
["items[0]", { kind: "", items: [""], apiVersion: "", metadata: { resourceVersion: "", selfLink: "" } }],
];
it.each(tests)("should reject with wrong type for field: %s", (missingField, input) => {
expect(KubeObject.isJsonApiDataList(input, isNotAny)).toBe(false);
});
}
it("should accept valid KubeJsonApiDataList (ignoring other fields)", () => {
const valid = { kind: "", items: [false], apiVersion: "", metadata: { resourceVersion: "", selfLink: "" } };
expect(KubeObject.isJsonApiDataList(valid, isBoolean)).toBe(true);
});
});
});

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@ -2,8 +2,8 @@
import { stringify } from "querystring";
import { EventEmitter } from "../../common/event-emitter";
import { cancelableFetch } from "../utils/cancelableFetch";
import { randomBytes } from "crypto";
export interface JsonApiData {
}
@ -72,13 +72,11 @@ export class JsonApi<D = JsonApiData, P extends JsonApiParams = JsonApiParams> {
reqUrl += (reqUrl.includes("?") ? "&" : "?") + queryString;
}
const infoLog: JsonApiLog = {
this.writeLog({
method: reqInit.method.toUpperCase(),
reqUrl: reqPath,
reqInit,
};
this.writeLog({ ...infoLog });
});
return fetch(reqUrl, reqInit);
}
@ -99,7 +97,7 @@ export class JsonApi<D = JsonApiData, P extends JsonApiParams = JsonApiParams> {
return this.request<T>(path, params, { ...reqInit, method: "delete" });
}
protected request<D>(path: string, params?: P, init: RequestInit = {}) {
protected async request<D>(path: string, params?: P, init: RequestInit = {}) {
let reqUrl = this.config.apiBase + path;
const reqInit: RequestInit = { ...this.reqInit, ...init };
const { data, query } = params || {} as P;
@ -119,48 +117,53 @@ export class JsonApi<D = JsonApiData, P extends JsonApiParams = JsonApiParams> {
reqInit,
};
return cancelableFetch(reqUrl, reqInit).then(res => {
return this.parseResponse<D>(res, infoLog);
});
const res = await fetch(reqUrl, reqInit);
return this.parseResponse<D>(res, infoLog);
}
protected parseResponse<D>(res: Response, log: JsonApiLog): Promise<D> {
protected async parseResponse<D>(res: Response, log: JsonApiLog): Promise<D> {
const { status } = res;
return res.text().then(text => {
let data;
const text = await res.text();
let data;
try {
data = text ? JSON.parse(text) : ""; // DELETE-requests might not have response-body
} catch (e) {
data = text;
}
try {
data = text ? JSON.parse(text) : ""; // DELETE-requests might not have response-body
} catch (e) {
data = text;
}
if (status >= 200 && status < 300) {
this.onData.emit(data, res);
this.writeLog({ ...log, data });
if (status >= 200 && status < 300) {
this.onData.emit(data, res);
this.writeLog({ ...log, data });
return data;
} else if (log.method === "GET" && res.status === 403) {
this.writeLog({ ...log, data });
} else {
const error = new JsonApiErrorParsed(data, this.parseError(data, res));
return data;
}
this.onError.emit(error, res);
this.writeLog({ ...log, error });
throw error;
}
});
if (log.method === "GET" && res.status === 403) {
this.writeLog({ ...log, error: data });
throw data;
}
const error = new JsonApiErrorParsed(data, this.parseError(data, res));
this.onError.emit(error, res);
this.writeLog({ ...log, error });
throw error;
}
protected parseError(error: JsonApiError | string, res: Response): string[] {
if (typeof error === "string") {
return [error];
}
else if (Array.isArray(error.errors)) {
if (Array.isArray(error.errors)) {
return error.errors.map(error => error.title);
}
else if (error.message) {
if (error.message) {
return [error.message];
}

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@ -7,11 +7,12 @@ import logger from "../../main/logger";
import { apiManager } from "./api-manager";
import { apiKube } from "./index";
import { createKubeApiURL, parseKubeApi } from "./kube-api-parse";
import { KubeJsonApi, KubeJsonApiData, KubeJsonApiDataList } from "./kube-json-api";
import { IKubeObjectConstructor, KubeObject, KubeStatus } from "./kube-object";
import byline from "byline";
import { IKubeWatchEvent } from "./kube-watch-api";
import { ReadableWebToNodeStream } from "../utils/readableStream";
import { KubeJsonApi, KubeJsonApiData } from "./kube-json-api";
import { noop } from "../utils";
export interface IKubeApiOptions<T extends KubeObject> {
/**
@ -34,6 +35,11 @@ export interface IKubeApiOptions<T extends KubeObject> {
checkPreferredVersion?: boolean;
}
export interface KubeApiListOptions {
namespace?: string;
reqInit?: RequestInit;
}
export interface IKubeApiQueryParams {
watch?: boolean | number;
resourceVersion?: string;
@ -243,7 +249,7 @@ export class KubeApi<T extends KubeObject = any> {
return this.resourceVersions.get(namespace);
}
async refreshResourceVersion(params?: { namespace: string }) {
async refreshResourceVersion(params?: KubeApiListOptions) {
return this.list(params, { limit: 1 });
}
@ -271,20 +277,12 @@ export class KubeApi<T extends KubeObject = any> {
return query;
}
protected parseResponse(data: KubeJsonApiData | KubeJsonApiData[] | KubeJsonApiDataList, namespace?: string): any {
protected parseResponse(data: unknown, namespace?: string): T | T[] | null {
if (!data) return;
const KubeObjectConstructor = this.objectConstructor;
if (KubeObject.isJsonApiData(data)) {
const object = new KubeObjectConstructor(data);
ensureObjectSelfLink(this, object);
return object;
}
// process items list response
if (KubeObject.isJsonApiDataList(data)) {
// process items list response, check before single item since there is overlap
if (KubeObject.isJsonApiDataList(data, KubeObject.isPartialJsonApiData)) {
const { apiVersion, items, metadata } = data;
this.setResourceVersion(namespace, metadata.resourceVersion);
@ -303,55 +301,90 @@ export class KubeApi<T extends KubeObject = any> {
});
}
// process a single item
if (KubeObject.isJsonApiData(data)) {
const object = new KubeObjectConstructor(data);
ensureObjectSelfLink(this, object);
return object;
}
// custom apis might return array for list response, e.g. users, groups, etc.
if (Array.isArray(data)) {
return data.map(data => new KubeObjectConstructor(data));
}
return data;
return null;
}
async list({ namespace = "" } = {}, query?: IKubeApiQueryParams): Promise<T[]> {
async list({ namespace = "", reqInit }: KubeApiListOptions = {}, query?: IKubeApiQueryParams): Promise<T[] | null> {
await this.checkPreferredVersion();
return this.request
.get(this.getUrl({ namespace }), { query })
.then(data => this.parseResponse(data, namespace));
const url = this.getUrl({ namespace });
const res = await this.request.get(url, { query }, reqInit);
const parsed = this.parseResponse(res, namespace);
if (Array.isArray(parsed)) {
return parsed;
}
if (!parsed) {
return null;
}
throw new Error(`GET multiple request to ${url} returned not an array: ${JSON.stringify(parsed)}`);
}
async get({ name = "", namespace = "default" } = {}, query?: IKubeApiQueryParams): Promise<T> {
async get({ name = "", namespace = "default" } = {}, query?: IKubeApiQueryParams): Promise<T | null> {
await this.checkPreferredVersion();
return this.request
.get(this.getUrl({ namespace, name }), { query })
.then(this.parseResponse);
const url = this.getUrl({ namespace, name });
const res = await this.request.get(url, { query });
const parsed = this.parseResponse(res);
if (Array.isArray(parsed)) {
throw new Error(`GET single request to ${url} returned an array: ${JSON.stringify(parsed)}`);
}
return parsed;
}
async create({ name = "", namespace = "default" } = {}, data?: Partial<T>): Promise<T> {
async create({ name = "", namespace = "default" } = {}, data?: Partial<T>): Promise<T | null> {
await this.checkPreferredVersion();
const apiUrl = this.getUrl({ namespace });
const res = await this.request.post(apiUrl, {
data: merge({
kind: this.kind,
apiVersion: this.apiVersionWithGroup,
metadata: {
name,
namespace
}
}, data)
});
const parsed = this.parseResponse(res);
return this.request
.post(apiUrl, {
data: merge({
kind: this.kind,
apiVersion: this.apiVersionWithGroup,
metadata: {
name,
namespace
}
}, data)
})
.then(this.parseResponse);
if (Array.isArray(parsed)) {
throw new Error(`POST request to ${apiUrl} returned an array: ${JSON.stringify(parsed)}`);
}
return parsed;
}
async update({ name = "", namespace = "default" } = {}, data?: Partial<T>): Promise<T> {
async update({ name = "", namespace = "default" } = {}, data?: Partial<T>): Promise<T | null> {
await this.checkPreferredVersion();
const apiUrl = this.getUrl({ namespace, name });
return this.request
.put(apiUrl, { data })
.then(this.parseResponse);
const res = await this.request.put(apiUrl, { data });
const parsed = this.parseResponse(res);
if (Array.isArray(parsed)) {
throw new Error(`PUT request to ${apiUrl} returned an array: ${JSON.stringify(parsed)}`);
}
return parsed;
}
async delete({ name = "", namespace = "default" }) {
@ -370,78 +403,60 @@ export class KubeApi<T extends KubeObject = any> {
}
watch(opts: KubeApiWatchOptions = { namespace: "" }): () => void {
if (!opts.abortController) {
opts.abortController = new AbortController();
}
let errorReceived = false;
let timedRetry: NodeJS.Timeout;
const { abortController, namespace, callback } = opts;
const { abortController: { abort, signal } = new AbortController(), namespace, callback = noop } = opts;
abortController.signal.addEventListener("abort", () => {
signal.addEventListener("abort", () => {
clearTimeout(timedRetry);
});
const watchUrl = this.getWatchUrl(namespace);
const responsePromise = this.request.getResponse(watchUrl, null, {
signal: abortController.signal
});
const responsePromise = this.request.getResponse(watchUrl, null, { signal });
responsePromise.then((response) => {
if (!response.ok && !abortController.signal.aborted) {
callback?.(null, response);
return;
}
const nodeStream = new ReadableWebToNodeStream(response.body);
["end", "close", "error"].forEach((eventName) => {
nodeStream.on(eventName, () => {
if (errorReceived) return; // kubernetes errors should be handled in a callback
clearTimeout(timedRetry);
timedRetry = setTimeout(() => { // we did not get any kubernetes errors so let's retry
if (abortController.signal.aborted) return;
this.watch({...opts, namespace, callback});
}, 1000);
});
});
const stream = byline(nodeStream);
stream.on("data", (line) => {
try {
const event: IKubeWatchEvent = JSON.parse(line);
if (event.type === "ERROR" && event.object.kind === "Status") {
errorReceived = true;
callback(null, new KubeStatus(event.object as any));
return;
}
this.modifyWatchEvent(event);
if (callback) {
callback(event, null);
}
} catch (ignore) {
// ignore parse errors
responsePromise
.then(response => {
if (!response.ok) {
return callback(null, response);
}
const nodeStream = new ReadableWebToNodeStream(response.body);
["end", "close", "error"].forEach((eventName) => {
nodeStream.on(eventName, () => {
if (errorReceived) return; // kubernetes errors should be handled in a callback
clearTimeout(timedRetry);
timedRetry = setTimeout(() => { // we did not get any kubernetes errors so let's retry
this.watch({...opts, namespace, callback});
}, 1000);
});
});
byline(nodeStream).on("data", (line) => {
try {
const event: IKubeWatchEvent = JSON.parse(line);
if (event.type === "ERROR" && event.object.kind === "Status") {
errorReceived = true;
return callback(null, new KubeStatus(event.object as any));
}
this.modifyWatchEvent(event);
callback(event, null);
} catch (ignore) {
// ignore parse errors
}
});
})
.catch(error => {
if (error instanceof DOMException) return; // AbortController rejects, we can ignore it
callback(null, error);
});
}, (error) => {
if (error instanceof DOMException) return; // AbortController rejects, we can ignore it
callback?.(null, error);
}).catch((error) => {
callback?.(null, error);
});
const disposer = () => {
abortController.abort();
};
return disposer;
return abort;
}
protected modifyWatchEvent(event: IKubeWatchEvent) {

View File

@ -1,34 +1,38 @@
import { JsonApi, JsonApiData, JsonApiError } from "./json-api";
export interface KubeJsonApiListMetadata {
resourceVersion: string;
selfLink?: string;
}
export interface KubeJsonApiDataList<T = KubeJsonApiData> {
kind: string;
apiVersion: string;
items: T[];
metadata: {
resourceVersion: string;
selfLink: string;
metadata: KubeJsonApiListMetadata;
}
export interface KubeJsonApiMetadata {
uid: string;
name: string;
namespace?: string;
creationTimestamp?: string;
resourceVersion: string;
continue?: string;
finalizers?: string[];
selfLink?: string;
labels?: {
[label: string]: string;
};
annotations?: {
[annotation: string]: string;
};
}
export interface KubeJsonApiData extends JsonApiData {
kind: string;
apiVersion: string;
metadata: {
uid: string;
name: string;
namespace?: string;
creationTimestamp?: string;
resourceVersion: string;
continue?: string;
finalizers?: string[];
selfLink?: string;
labels?: {
[label: string]: string;
};
annotations?: {
[annotation: string]: string;
};
};
metadata: KubeJsonApiMetadata;
}
export interface KubeJsonApiError extends JsonApiError {

View File

@ -1,12 +1,13 @@
// Base class for all kubernetes objects
import moment from "moment";
import { KubeJsonApiData, KubeJsonApiDataList } from "./kube-json-api";
import { KubeJsonApiData, KubeJsonApiDataList, KubeJsonApiListMetadata, KubeJsonApiMetadata } from "./kube-json-api";
import { autobind, formatDuration } from "../utils";
import { ItemObject } from "../item.store";
import { apiKube } from "./index";
import { JsonApiParams } from "./json-api";
import { resourceApplierApi } from "./endpoints/resource-applier.api";
import { hasOptionalProperty, hasTypedProperty, isObject, isString, bindPredicate, isTypedArray, isRecord } from "../../common/utils/type-narrowing";
export type IKubeObjectConstructor<T extends KubeObject = any> = (new (data: KubeJsonApiData | any) => T) & {
kind?: string;
@ -78,15 +79,59 @@ export class KubeObject implements ItemObject {
return !item.metadata.name.startsWith("system:");
}
static isJsonApiData(object: any): object is KubeJsonApiData {
return !object.items && object.metadata;
static isJsonApiData(object: unknown): object is KubeJsonApiData {
return (
isObject(object)
&& hasTypedProperty(object, "kind", isString)
&& hasTypedProperty(object, "apiVersion", isString)
&& hasTypedProperty(object, "metadata", KubeObject.isKubeJsonApiMetadata)
);
}
static isJsonApiDataList(object: any): object is KubeJsonApiDataList {
return object.items && object.metadata;
static isKubeJsonApiListMetadata(object: unknown): object is KubeJsonApiListMetadata {
return (
isObject(object)
&& hasTypedProperty(object, "resourceVersion", isString)
&& hasOptionalProperty(object, "selfLink", isString)
);
}
static stringifyLabels(labels: { [name: string]: string }): string[] {
static isKubeJsonApiMetadata(object: unknown): object is KubeJsonApiMetadata {
return (
isObject(object)
&& hasTypedProperty(object, "uid", isString)
&& hasTypedProperty(object, "name", isString)
&& hasTypedProperty(object, "resourceVersion", isString)
&& hasOptionalProperty(object, "selfLink", isString)
&& hasOptionalProperty(object, "namespace", isString)
&& hasOptionalProperty(object, "creationTimestamp", isString)
&& hasOptionalProperty(object, "continue", isString)
&& hasOptionalProperty(object, "finalizers", bindPredicate(isTypedArray, isString))
&& hasOptionalProperty(object, "labels", bindPredicate(isRecord, isString, isString))
&& hasOptionalProperty(object, "annotations", bindPredicate(isRecord, isString, isString))
);
}
static isPartialJsonApiData(object: unknown): object is Partial<KubeJsonApiData> {
return (
isObject(object)
&& hasOptionalProperty(object, "kind", isString)
&& hasOptionalProperty(object, "apiVersion", isString)
&& hasOptionalProperty(object, "metadata", KubeObject.isKubeJsonApiMetadata)
);
}
static isJsonApiDataList<T>(object: unknown, verifyItem:(val: unknown) => val is T): object is KubeJsonApiDataList<T> {
return (
isObject(object)
&& hasTypedProperty(object, "kind", isString)
&& hasTypedProperty(object, "apiVersion", isString)
&& hasTypedProperty(object, "metadata", KubeObject.isKubeJsonApiListMetadata)
&& hasTypedProperty(object, "items", bindPredicate(isTypedArray, verifyItem))
);
}
static stringifyLabels(labels?: { [name: string]: string }): string[] {
if (!labels) return [];
return Object.entries(labels).map(([name, value]) => `${name}=${value}`);