@devcycle/nodejs-server-sdk
Version:
The DevCycle NodeJS Server SDK used for feature management.
81 lines • 3.6 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.CDNConfigSource = void 0;
const types_1 = require("@devcycle/types");
const request_1 = require("./request");
const server_request_1 = require("../server-request/src");
class CDNConfigSource extends types_1.ConfigSource {
constructor(cdnURI, logger, requestTimeoutMS) {
super();
this.cdnURI = cdnURI;
this.logger = logger;
this.requestTimeoutMS = requestTimeoutMS;
}
// type generic to make typescript happy. It's always false in this implementation
async getConfig(sdkKey, kind, obfuscated, lastModifiedThreshold) {
var _a, _b, _c, _d;
let res;
try {
res = await (0, request_1.getEnvironmentConfig)({
logger: this.logger,
url: this.getConfigURL(sdkKey, kind),
requestTimeout: this.requestTimeoutMS,
currentEtag: this.configEtag,
currentLastModified: this.configLastModified,
sseLastModified: lastModifiedThreshold,
});
}
catch (e) {
if (e instanceof server_request_1.ResponseError && e.status === 403) {
throw new types_1.UserError(`Invalid SDK key provided: ${sdkKey}`);
}
throw e;
}
const metadata = {
resEtag: (_a = res.headers.get('etag')) !== null && _a !== void 0 ? _a : undefined,
resLastModified: (_b = res.headers.get('last-modified')) !== null && _b !== void 0 ? _b : undefined,
resRayId: (_c = res.headers.get('cf-ray')) !== null && _c !== void 0 ? _c : undefined,
resStatus: (_d = res.status) !== null && _d !== void 0 ? _d : undefined,
};
res.headers.forEach((value, name) => {
metadata[`resHeader_` + name] = value;
});
this.logger.debug(`Downloaded config, status: ${res === null || res === void 0 ? void 0 : res.status}, etag: ${res === null || res === void 0 ? void 0 : res.headers.get('etag')}`);
if (res.status === 304) {
this.logger.debug(`Config not modified, using cache, etag: ${this.configEtag}` +
`, last-modified: ${this.configLastModified}`);
}
else if (res.status === 200) {
const projectConfig = (await res.json());
const lastModifiedHeader = res.headers.get('last-modified');
if (this.isLastModifiedHeaderOld(lastModifiedHeader !== null && lastModifiedHeader !== void 0 ? lastModifiedHeader : null)) {
this.logger.debug('Skipping saving config, existing last modified date is newer.');
return {
config: null,
metaData: metadata,
lastModified: lastModifiedHeader,
};
}
this.configEtag = res.headers.get('etag') || '';
this.configLastModified = lastModifiedHeader || '';
return {
config: projectConfig,
metaData: metadata,
lastModified: lastModifiedHeader,
};
}
return {
config: null,
metaData: metadata,
lastModified: null,
};
}
getConfigURL(sdkKey, kind) {
if (kind === 'bootstrap') {
return `${this.cdnURI}/config/v2/server/bootstrap/${sdkKey}.json`;
}
return `${this.cdnURI}/config/v2/server/${sdkKey}.json`;
}
}
exports.CDNConfigSource = CDNConfigSource;
//# sourceMappingURL=CDNConfigSource.js.map