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130 lines
3.7 KiB
TypeScript
130 lines
3.7 KiB
TypeScript
// Loaded from https://raw.githubusercontent.com/nats-io/nats.deno/v1.0.0-rc4/nats-base-client/options.ts
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/*
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* Copyright 2021 The NATS Authors
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import { extend } from "./util.ts";
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import { ErrorCode, NatsError } from "./error.ts";
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import {
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ConnectionOptions,
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DEFAULT_HOST,
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DEFAULT_JITTER,
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DEFAULT_JITTER_TLS,
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DEFAULT_MAX_PING_OUT,
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DEFAULT_MAX_RECONNECT_ATTEMPTS,
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DEFAULT_PING_INTERVAL,
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DEFAULT_RECONNECT_TIME_WAIT,
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ServerInfo,
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} from "./types.ts";
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import { buildAuthenticator } from "./authenticator.ts";
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import { defaultPort } from "./transport.ts";
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import { createInbox } from "./mod.ts";
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export function defaultOptions(): ConnectionOptions {
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return {
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maxPingOut: DEFAULT_MAX_PING_OUT,
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maxReconnectAttempts: DEFAULT_MAX_RECONNECT_ATTEMPTS,
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noRandomize: false,
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pedantic: false,
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pingInterval: DEFAULT_PING_INTERVAL,
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reconnect: true,
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reconnectJitter: DEFAULT_JITTER,
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reconnectJitterTLS: DEFAULT_JITTER_TLS,
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reconnectTimeWait: DEFAULT_RECONNECT_TIME_WAIT,
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tls: undefined,
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verbose: false,
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waitOnFirstConnect: false,
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} as ConnectionOptions;
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}
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export function parseOptions(opts?: ConnectionOptions): ConnectionOptions {
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const dhp = `${DEFAULT_HOST}:${defaultPort()}`;
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opts = opts || { servers: [dhp] };
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if (opts.port) {
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opts.servers = [`${DEFAULT_HOST}:${opts.port}`];
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}
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if (typeof opts.servers === "string") {
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opts.servers = [opts.servers];
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}
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if (opts.servers && opts.servers.length === 0) {
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opts.servers = [dhp];
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}
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const options = extend(defaultOptions(), opts);
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// tokens don't get users
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if (opts.user && opts.token) {
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throw NatsError.errorForCode(ErrorCode.BAD_AUTHENTICATION);
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}
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// if authenticator, no other options allowed
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if (
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opts.authenticator && (
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opts.token || opts.user || opts.pass
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)
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) {
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throw NatsError.errorForCode(ErrorCode.BAD_AUTHENTICATION);
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}
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options.authenticator = buildAuthenticator(options);
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["reconnectDelayHandler", "authenticator"].forEach((n) => {
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if (options[n] && typeof options[n] !== "function") {
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throw new NatsError(
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`${n} option should be a function`,
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ErrorCode.NOT_FUNC,
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);
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}
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});
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if (!options.reconnectDelayHandler) {
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options.reconnectDelayHandler = () => {
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let extra = options.tls
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? options.reconnectJitterTLS
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: options.reconnectJitter;
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if (extra) {
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extra++;
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extra = Math.floor(Math.random() * extra);
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}
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return options.reconnectTimeWait + extra;
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};
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}
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if (options.inboxPrefix) {
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try {
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createInbox(options.inboxPrefix);
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} catch (err) {
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throw new NatsError(err.message, ErrorCode.API_ERROR);
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}
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}
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return options;
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}
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export function checkOptions(info: ServerInfo, options: ConnectionOptions) {
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const { proto, tls_required: tlsRequired } = info;
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if ((proto === undefined || proto < 1) && options.noEcho) {
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throw new NatsError("noEcho", ErrorCode.SERVER_OPTION_NA);
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}
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if (options.tls && !tlsRequired) {
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throw new NatsError("tls", ErrorCode.SERVER_OPTION_NA);
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}
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}
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export function checkUnsupportedOption(prop: string, v?: string) {
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if (v) {
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throw new NatsError(prop, ErrorCode.INVALID_OPTION);
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}
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}
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