197 lines
8.6 KiB
JavaScript
197 lines
8.6 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.compareTopologyVersion = exports.parseServerType = exports.ServerDescription = void 0;
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const bson_1 = require("../bson");
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const utils_1 = require("../utils");
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const common_1 = require("./common");
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const WRITABLE_SERVER_TYPES = new Set([
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common_1.ServerType.RSPrimary,
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common_1.ServerType.Standalone,
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common_1.ServerType.Mongos,
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common_1.ServerType.LoadBalancer
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]);
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const DATA_BEARING_SERVER_TYPES = new Set([
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common_1.ServerType.RSPrimary,
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common_1.ServerType.RSSecondary,
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common_1.ServerType.Mongos,
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common_1.ServerType.Standalone,
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common_1.ServerType.LoadBalancer
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]);
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/**
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* The client's view of a single server, based on the most recent hello outcome.
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*
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* Internal type, not meant to be directly instantiated
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* @public
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*/
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class ServerDescription {
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/**
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* Create a ServerDescription
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* @internal
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*
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* @param address - The address of the server
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* @param hello - An optional hello response for this server
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*/
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constructor(address, hello, options) {
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var _a, _b, _c, _d, _e, _f, _g, _h, _j, _k, _l, _m;
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if (typeof address === 'string') {
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this._hostAddress = new utils_1.HostAddress(address);
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this.address = this._hostAddress.toString();
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}
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else {
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this._hostAddress = address;
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this.address = this._hostAddress.toString();
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}
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this.type = parseServerType(hello, options);
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this.hosts = (_b = (_a = hello === null || hello === void 0 ? void 0 : hello.hosts) === null || _a === void 0 ? void 0 : _a.map((host) => host.toLowerCase())) !== null && _b !== void 0 ? _b : [];
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this.passives = (_d = (_c = hello === null || hello === void 0 ? void 0 : hello.passives) === null || _c === void 0 ? void 0 : _c.map((host) => host.toLowerCase())) !== null && _d !== void 0 ? _d : [];
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this.arbiters = (_f = (_e = hello === null || hello === void 0 ? void 0 : hello.arbiters) === null || _e === void 0 ? void 0 : _e.map((host) => host.toLowerCase())) !== null && _f !== void 0 ? _f : [];
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this.tags = (_g = hello === null || hello === void 0 ? void 0 : hello.tags) !== null && _g !== void 0 ? _g : {};
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this.minWireVersion = (_h = hello === null || hello === void 0 ? void 0 : hello.minWireVersion) !== null && _h !== void 0 ? _h : 0;
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this.maxWireVersion = (_j = hello === null || hello === void 0 ? void 0 : hello.maxWireVersion) !== null && _j !== void 0 ? _j : 0;
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this.roundTripTime = (_k = options === null || options === void 0 ? void 0 : options.roundTripTime) !== null && _k !== void 0 ? _k : -1;
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this.lastUpdateTime = (0, utils_1.now)();
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this.lastWriteDate = (_m = (_l = hello === null || hello === void 0 ? void 0 : hello.lastWrite) === null || _l === void 0 ? void 0 : _l.lastWriteDate) !== null && _m !== void 0 ? _m : 0;
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if (options === null || options === void 0 ? void 0 : options.topologyVersion) {
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this.topologyVersion = options.topologyVersion;
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}
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else if (hello === null || hello === void 0 ? void 0 : hello.topologyVersion) {
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this.topologyVersion = hello.topologyVersion;
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}
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if (options === null || options === void 0 ? void 0 : options.error) {
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this.error = options.error;
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}
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if (hello === null || hello === void 0 ? void 0 : hello.primary) {
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this.primary = hello.primary;
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}
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if (hello === null || hello === void 0 ? void 0 : hello.me) {
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this.me = hello.me.toLowerCase();
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}
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if (hello === null || hello === void 0 ? void 0 : hello.setName) {
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this.setName = hello.setName;
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}
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if (hello === null || hello === void 0 ? void 0 : hello.setVersion) {
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this.setVersion = hello.setVersion;
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}
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if (hello === null || hello === void 0 ? void 0 : hello.electionId) {
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this.electionId = hello.electionId;
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}
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if (hello === null || hello === void 0 ? void 0 : hello.logicalSessionTimeoutMinutes) {
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this.logicalSessionTimeoutMinutes = hello.logicalSessionTimeoutMinutes;
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}
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if (hello === null || hello === void 0 ? void 0 : hello.$clusterTime) {
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this.$clusterTime = hello.$clusterTime;
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}
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}
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get hostAddress() {
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if (this._hostAddress)
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return this._hostAddress;
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else
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return new utils_1.HostAddress(this.address);
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}
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get allHosts() {
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return this.hosts.concat(this.arbiters).concat(this.passives);
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}
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/** Is this server available for reads*/
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get isReadable() {
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return this.type === common_1.ServerType.RSSecondary || this.isWritable;
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}
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/** Is this server data bearing */
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get isDataBearing() {
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return DATA_BEARING_SERVER_TYPES.has(this.type);
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}
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/** Is this server available for writes */
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get isWritable() {
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return WRITABLE_SERVER_TYPES.has(this.type);
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}
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get host() {
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const chopLength = `:${this.port}`.length;
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return this.address.slice(0, -chopLength);
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}
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get port() {
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const port = this.address.split(':').pop();
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return port ? Number.parseInt(port, 10) : 27017;
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}
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/**
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* Determines if another `ServerDescription` is equal to this one per the rules defined
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* in the {@link https://github.com/mongodb/specifications/blob/master/source/server-discovery-and-monitoring/server-discovery-and-monitoring.rst#serverdescription|SDAM spec}
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*/
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equals(other) {
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const topologyVersionsEqual = this.topologyVersion === other.topologyVersion ||
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compareTopologyVersion(this.topologyVersion, other.topologyVersion) === 0;
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const electionIdsEqual = this.electionId && other.electionId
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? other.electionId && this.electionId.equals(other.electionId)
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: this.electionId === other.electionId;
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return (other != null &&
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(0, utils_1.errorStrictEqual)(this.error, other.error) &&
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this.type === other.type &&
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this.minWireVersion === other.minWireVersion &&
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(0, utils_1.arrayStrictEqual)(this.hosts, other.hosts) &&
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tagsStrictEqual(this.tags, other.tags) &&
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this.setName === other.setName &&
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this.setVersion === other.setVersion &&
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electionIdsEqual &&
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this.primary === other.primary &&
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this.logicalSessionTimeoutMinutes === other.logicalSessionTimeoutMinutes &&
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topologyVersionsEqual);
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}
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}
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exports.ServerDescription = ServerDescription;
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// Parses a `hello` message and determines the server type
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function parseServerType(hello, options) {
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if (options === null || options === void 0 ? void 0 : options.loadBalanced) {
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return common_1.ServerType.LoadBalancer;
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}
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if (!hello || !hello.ok) {
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return common_1.ServerType.Unknown;
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}
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if (hello.isreplicaset) {
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return common_1.ServerType.RSGhost;
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}
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if (hello.msg && hello.msg === 'isdbgrid') {
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return common_1.ServerType.Mongos;
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}
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if (hello.setName) {
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if (hello.hidden) {
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return common_1.ServerType.RSOther;
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}
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else if (hello.isWritablePrimary) {
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return common_1.ServerType.RSPrimary;
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}
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else if (hello.secondary) {
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return common_1.ServerType.RSSecondary;
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}
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else if (hello.arbiterOnly) {
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return common_1.ServerType.RSArbiter;
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}
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else {
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return common_1.ServerType.RSOther;
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}
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}
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return common_1.ServerType.Standalone;
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}
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exports.parseServerType = parseServerType;
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function tagsStrictEqual(tags, tags2) {
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const tagsKeys = Object.keys(tags);
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const tags2Keys = Object.keys(tags2);
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return (tagsKeys.length === tags2Keys.length &&
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tagsKeys.every((key) => tags2[key] === tags[key]));
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}
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/**
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* Compares two topology versions.
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*
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* @returns A negative number if `lhs` is older than `rhs`; positive if `lhs` is newer than `rhs`; 0 if they are equivalent.
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*/
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function compareTopologyVersion(lhs, rhs) {
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if (lhs == null || rhs == null) {
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return -1;
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}
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if (lhs.processId.equals(rhs.processId)) {
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// tests mock counter as just number, but in a real situation counter should always be a Long
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const lhsCounter = bson_1.Long.isLong(lhs.counter) ? lhs.counter : bson_1.Long.fromNumber(lhs.counter);
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const rhsCounter = bson_1.Long.isLong(rhs.counter) ? lhs.counter : bson_1.Long.fromNumber(rhs.counter);
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return lhsCounter.compare(rhsCounter);
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}
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return -1;
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}
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exports.compareTopologyVersion = compareTopologyVersion;
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//# sourceMappingURL=server_description.js.map
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