@mittwald/kubernetes
Version:
Kubernetes client library
241 lines • 11.4 kB
JavaScript
;
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.KubernetesRESTClient = exports.patchKindJSONPatch = exports.patchKindMergePatch = exports.patchKindStrategicMergePatch = void 0;
const label_1 = require("./label");
const meta_1 = require("./types/meta");
const security_1 = require("./security");
const axios_1 = __importDefault(require("axios"));
const http2 = __importStar(require("http2"));
const qs_1 = __importDefault(require("qs"));
const debug = require("debug")("kubernetes:client");
exports.patchKindStrategicMergePatch = "application/stategic-merge-patch+json";
exports.patchKindMergePatch = "application/merge-patch+json";
exports.patchKindJSONPatch = "application/json-patch+json";
const joinURL = (left, right) => (left + "/" + right).replace(/([^:])(\/\/)/g, "$1/");
class KubernetesRESTClient {
constructor(config) {
this.config = config;
}
request(url, body, method = "POST", additionalOptions = {}) {
return __awaiter(this, void 0, void 0, function* () {
const absoluteURL = joinURL(this.config.apiServerURL, url);
let opts = {
method,
url: absoluteURL,
responseType: "json",
validateStatus: () => true,
};
if (body) {
opts.data = body;
}
opts = this.config.mapAxiosOptions(opts);
if (additionalOptions.headers) {
additionalOptions.headers = Object.assign(Object.assign({}, (opts.headers || {})), additionalOptions.headers);
}
opts = Object.assign(Object.assign({}, opts), additionalOptions);
debug(`executing ${method} request on ${opts.url}`);
const response = yield (0, axios_1.default)(opts);
const responseBody = response.data;
if (typeof responseBody === "object" && (0, meta_1.isStatus)(responseBody) && responseBody.status === "Failure") {
throw new Error(responseBody.message);
}
debug(`${method} request on ${opts.url} succeeded with status ${response.status}: ${(0, security_1.redactResponseBodyForLogging)(responseBody)}`);
return responseBody;
});
}
post(url, body) {
return this.request(url, body, "POST");
}
put(url, body) {
return this.request(url, body, "PUT");
}
patch(url, body, patchKind) {
return this.request(url, body, "PATCH", {
headers: {
"Content-Type": patchKind,
},
});
}
delete(url, deleteOptions, queryParams = {}, body) {
const opts = {};
opts.params = queryParams;
if (deleteOptions && deleteOptions.labelSelector) {
opts.params.labelSelector = (0, label_1.selectorToQueryString)(deleteOptions.labelSelector);
}
if (deleteOptions && deleteOptions.fieldSelector) {
opts.params.fieldSelector = (0, label_1.selectorToQueryString)(deleteOptions.fieldSelector);
}
return this.request(url, body, "DELETE", opts);
}
watch(url, onUpdate, onError, watchOpts = {}) {
const absoluteURL = joinURL(this.config.apiServerURL, url);
const params = { watch: "true" };
const { pingIntervalSeconds = 15 } = watchOpts;
if (watchOpts.labelSelector) {
params.labelSelector = (0, label_1.selectorToQueryString)(watchOpts.labelSelector);
}
if (watchOpts.fieldSelector) {
params.fieldSelector = (0, label_1.selectorToQueryString)(watchOpts.fieldSelector);
}
if (watchOpts.resourceVersion) {
params.resourceVersion = `${watchOpts.resourceVersion}`;
}
let clientPingInterval;
const clientOpts = this.config.mapNativeOptions({});
const client = http2.connect(this.config.apiServerURL, clientOpts, (session) => {
clientPingInterval = setInterval(() => {
session.ping((err) => {
if (err) {
debug("error on HTTP/2 client ping: %O", err);
session.destroy(err);
}
});
}, pingIntervalSeconds * 1000);
});
let lastVersion = watchOpts.resourceVersion || 0;
debug(`executing WATCH request on ${absoluteURL} (starting revision ${lastVersion})`);
return new Promise((res, rej) => {
const requestHeaders = Object.assign({ [http2.constants.HTTP2_HEADER_METHOD]: "GET", [http2.constants.HTTP2_HEADER_PATH]: url + "?" + qs_1.default.stringify(params), [http2.constants.HTTP2_HEADER_ACCEPT]: "application/json" }, this.config.mapHeaders({}));
const request = client.request(requestHeaders);
let lastResponse = "";
let buffer = "";
request.on("error", (err) => {
debug("watch: error: %O", err);
rej(err);
});
request.on("response", (headers) => {
const status = headers[":status"];
debug("%o request on %o completed with status %o", "WATCH", absoluteURL, status);
if (status && status >= 400) {
if (status === 410) {
debug("last known resource has expired -- resync required");
res({ resourceVersion: lastVersion, resyncRequired: true });
return;
}
rej(new Error(`Unexpected status code: ${status}`));
return;
}
});
request.on("end", () => {
if (clientPingInterval) {
clearInterval(clientPingInterval);
}
try {
const parsedBody = JSON.parse(lastResponse);
if ((0, meta_1.isStatus)(parsedBody) && parsedBody.status === "Failure") {
debug("watch: failed with status %O", parsedBody);
rej(parsedBody.message);
return;
}
}
catch (_) {
// this is fine; the request body is not guaranteed to be a single JSON document.
}
res({ resourceVersion: lastVersion });
});
request.on("data", (chunk) => {
var _a;
if (chunk instanceof Buffer) {
chunk = chunk.toString("utf-8");
}
debug("WATCH request on %o received %d bytes of data", absoluteURL, chunk.length);
buffer += chunk;
let parts = buffer.split('\n');
// the last part is either empty or a part of the following incomplete line
buffer = (_a = parts.pop()) !== null && _a !== void 0 ? _a : "";
if (buffer !== "") {
lastResponse = buffer;
}
else if (parts.length > 0) {
lastResponse = parts[parts.length - 1];
}
// Line is not yet complete; wait for next chunk.
if (parts.length === 0) {
return;
}
for (const part of parts) {
try {
const obj = JSON.parse(part);
const resourceVersion = obj.object.metadata.resourceVersion
? parseInt(obj.object.metadata.resourceVersion, 10)
: -1;
if (resourceVersion > lastVersion) {
debug(`watch: emitting ${obj.type} event for ${obj.object.metadata.name}`);
lastVersion = resourceVersion;
onUpdate(obj).catch(onError);
}
}
catch (err) {
onError(err);
}
}
});
});
}
get(url, listOptions = {}) {
return __awaiter(this, void 0, void 0, function* () {
const absoluteURL = joinURL(this.config.apiServerURL, url);
const { labelSelector, fieldSelector } = listOptions;
let opts = {
url: absoluteURL,
params: {},
validateStatus: () => true,
};
if (labelSelector) {
opts.params.labelSelector = (0, label_1.selectorToQueryString)(labelSelector);
}
if (fieldSelector) {
opts.params.fieldSelector = (0, label_1.selectorToQueryString)(fieldSelector);
}
opts = this.config.mapAxiosOptions(opts);
debug(`executing GET request on ${opts.url}`);
const response = yield (0, axios_1.default)(opts);
if (response.status === 404) {
debug("GET request on %o failed with status %o", opts.url, response.status);
return undefined;
}
if ((0, meta_1.isStatus)(response.data) && response.data.status === "Failure") {
if (response.data.code === 404) {
return undefined;
}
debug("executing GET request on %o failed. response body: %O", response.status, response.data);
throw new Error(response.data.message);
}
debug("GET request on %o succeeded with status %o: %O", opts.url, response.status, response.data);
return response.data;
});
}
}
exports.KubernetesRESTClient = KubernetesRESTClient;
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