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svrjs-blog-newsletter/backend/node_modules/mongodb/lib/cmap/handshake/client_metadata.js

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2024-05-26 22:54:55 +02:00
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.getFAASEnv = exports.makeClientMetadata = exports.LimitedSizeDocument = void 0;
const os = require("os");
const process = require("process");
const bson_1 = require("../../bson");
const error_1 = require("../../error");
// eslint-disable-next-line @typescript-eslint/no-var-requires
const NODE_DRIVER_VERSION = require('../../../package.json').version;
/** @internal */
class LimitedSizeDocument {
constructor(maxSize) {
this.maxSize = maxSize;
this.document = new Map();
/** BSON overhead: Int32 + Null byte */
this.documentSize = 5;
}
/** Only adds key/value if the bsonByteLength is less than MAX_SIZE */
ifItFitsItSits(key, value) {
// The BSON byteLength of the new element is the same as serializing it to its own document
// subtracting the document size int32 and the null terminator.
const newElementSize = bson_1.BSON.serialize(new Map().set(key, value)).byteLength - 5;
if (newElementSize + this.documentSize > this.maxSize) {
return false;
}
this.documentSize += newElementSize;
this.document.set(key, value);
return true;
}
toObject() {
return bson_1.BSON.deserialize(bson_1.BSON.serialize(this.document), {
promoteLongs: false,
promoteBuffers: false,
promoteValues: false,
useBigInt64: false
});
}
}
exports.LimitedSizeDocument = LimitedSizeDocument;
/**
* From the specs:
* Implementors SHOULD cumulatively update fields in the following order until the document is under the size limit:
* 1. Omit fields from `env` except `env.name`.
* 2. Omit fields from `os` except `os.type`.
* 3. Omit the `env` document entirely.
* 4. Truncate `platform`. -- special we do not truncate this field
*/
function makeClientMetadata(options) {
const metadataDocument = new LimitedSizeDocument(512);
const { appName = '' } = options;
// Add app name first, it must be sent
if (appName.length > 0) {
const name = Buffer.byteLength(appName, 'utf8') <= 128
? options.appName
: Buffer.from(appName, 'utf8').subarray(0, 128).toString('utf8');
metadataDocument.ifItFitsItSits('application', { name });
}
const { name = '', version = '', platform = '' } = options.driverInfo;
const driverInfo = {
name: name.length > 0 ? `nodejs|${name}` : 'nodejs',
version: version.length > 0 ? `${NODE_DRIVER_VERSION}|${version}` : NODE_DRIVER_VERSION
};
if (!metadataDocument.ifItFitsItSits('driver', driverInfo)) {
throw new error_1.MongoInvalidArgumentError('Unable to include driverInfo name and version, metadata cannot exceed 512 bytes');
}
let runtimeInfo = getRuntimeInfo();
if (platform.length > 0) {
runtimeInfo = `${runtimeInfo}|${platform}`;
}
if (!metadataDocument.ifItFitsItSits('platform', runtimeInfo)) {
throw new error_1.MongoInvalidArgumentError('Unable to include driverInfo platform, metadata cannot exceed 512 bytes');
}
// Note: order matters, os.type is last so it will be removed last if we're at maxSize
const osInfo = new Map()
.set('name', process.platform)
.set('architecture', process.arch)
.set('version', os.release())
.set('type', os.type());
if (!metadataDocument.ifItFitsItSits('os', osInfo)) {
for (const key of osInfo.keys()) {
osInfo.delete(key);
if (osInfo.size === 0)
break;
if (metadataDocument.ifItFitsItSits('os', osInfo))
break;
}
}
const faasEnv = getFAASEnv();
if (faasEnv != null) {
if (!metadataDocument.ifItFitsItSits('env', faasEnv)) {
for (const key of faasEnv.keys()) {
faasEnv.delete(key);
if (faasEnv.size === 0)
break;
if (metadataDocument.ifItFitsItSits('env', faasEnv))
break;
}
}
}
return metadataDocument.toObject();
}
exports.makeClientMetadata = makeClientMetadata;
/**
* Collects FaaS metadata.
* - `name` MUST be the last key in the Map returned.
*/
function getFAASEnv() {
const { AWS_EXECUTION_ENV = '', AWS_LAMBDA_RUNTIME_API = '', FUNCTIONS_WORKER_RUNTIME = '', K_SERVICE = '', FUNCTION_NAME = '', VERCEL = '', AWS_LAMBDA_FUNCTION_MEMORY_SIZE = '', AWS_REGION = '', FUNCTION_MEMORY_MB = '', FUNCTION_REGION = '', FUNCTION_TIMEOUT_SEC = '', VERCEL_REGION = '' } = process.env;
const isAWSFaaS = AWS_EXECUTION_ENV.startsWith('AWS_Lambda_') || AWS_LAMBDA_RUNTIME_API.length > 0;
const isAzureFaaS = FUNCTIONS_WORKER_RUNTIME.length > 0;
const isGCPFaaS = K_SERVICE.length > 0 || FUNCTION_NAME.length > 0;
const isVercelFaaS = VERCEL.length > 0;
// Note: order matters, name must always be the last key
const faasEnv = new Map();
// When isVercelFaaS is true so is isAWSFaaS; Vercel inherits the AWS env
if (isVercelFaaS && !(isAzureFaaS || isGCPFaaS)) {
if (VERCEL_REGION.length > 0) {
faasEnv.set('region', VERCEL_REGION);
}
faasEnv.set('name', 'vercel');
return faasEnv;
}
if (isAWSFaaS && !(isAzureFaaS || isGCPFaaS || isVercelFaaS)) {
if (AWS_REGION.length > 0) {
faasEnv.set('region', AWS_REGION);
}
if (AWS_LAMBDA_FUNCTION_MEMORY_SIZE.length > 0 &&
Number.isInteger(+AWS_LAMBDA_FUNCTION_MEMORY_SIZE)) {
faasEnv.set('memory_mb', new bson_1.Int32(AWS_LAMBDA_FUNCTION_MEMORY_SIZE));
}
faasEnv.set('name', 'aws.lambda');
return faasEnv;
}
if (isAzureFaaS && !(isGCPFaaS || isAWSFaaS || isVercelFaaS)) {
faasEnv.set('name', 'azure.func');
return faasEnv;
}
if (isGCPFaaS && !(isAzureFaaS || isAWSFaaS || isVercelFaaS)) {
if (FUNCTION_REGION.length > 0) {
faasEnv.set('region', FUNCTION_REGION);
}
if (FUNCTION_MEMORY_MB.length > 0 && Number.isInteger(+FUNCTION_MEMORY_MB)) {
faasEnv.set('memory_mb', new bson_1.Int32(FUNCTION_MEMORY_MB));
}
if (FUNCTION_TIMEOUT_SEC.length > 0 && Number.isInteger(+FUNCTION_TIMEOUT_SEC)) {
faasEnv.set('timeout_sec', new bson_1.Int32(FUNCTION_TIMEOUT_SEC));
}
faasEnv.set('name', 'gcp.func');
return faasEnv;
}
return null;
}
exports.getFAASEnv = getFAASEnv;
/**
* @internal
* Get current JavaScript runtime platform
*
* NOTE: The version information fetching is intentionally written defensively
* to avoid having a released driver version that becomes incompatible
* with a future change to these global objects.
*/
function getRuntimeInfo() {
var _a, _b;
if ('Deno' in globalThis) {
const version = typeof ((_a = Deno === null || Deno === void 0 ? void 0 : Deno.version) === null || _a === void 0 ? void 0 : _a.deno) === 'string' ? (_b = Deno === null || Deno === void 0 ? void 0 : Deno.version) === null || _b === void 0 ? void 0 : _b.deno : '0.0.0-unknown';
return `Deno v${version}, ${os.endianness()}`;
}
if ('Bun' in globalThis) {
const version = typeof (Bun === null || Bun === void 0 ? void 0 : Bun.version) === 'string' ? Bun === null || Bun === void 0 ? void 0 : Bun.version : '0.0.0-unknown';
return `Bun v${version}, ${os.endianness()}`;
}
return `Node.js ${process.version}, ${os.endianness()}`;
}
//# sourceMappingURL=client_metadata.js.map