trafficops-client

trafficops-client-ts

A TypeScript client for the Traffic Ops component of Apache Traffic Control.

Installation

To install from npm, use npm install trafficops-client (not trafficops-client-ts).

Versioning

The client package version matches the API version for which its use is approved, in major and minor terms (which is why version history starts at 3.1.0). The patch version is reserved for bugfix updates to the client itself.

So versions 3.1.0 and 3.1.1 are both suitable for use with API version 3, up to minor version 1 (although toaccess scripts will let you use whatever version you want with -a/--api-version), but 3.1.1 has at least one fix for at least one bug that exists in 3.1.0. So, in general, your patch version should always just be the latest.

Usage

This package can be used in one of two ways; as a set of command-line utilities (Linux-only supported), or as a client library.

Usage as a Client Library

Simple usage is as follows:

import { Client } from "trafficops-client";

// myTrafficOpsURL can be a string or a URL
const client = new Client(myTrafficOpsURL, options);
client.login(myTrafficOpsUsername, myTrafficOpsPassword).then(
	async (): Promise<void> => {
		// client is now authenticated, do things like e.g. get servers and
		// print their hostnames.
		const servers = (await client.getServers()).response;
		for (const server of servers) {
			console.log(server.hostName);
		}
	}
);

Note that for the vast majority of endpoints, you must manually log-in using Client.login before sending any requests, otherwise they will all fail. Even for endpoints that don't require authentication, the Client method that calls them may assume you are authenticated and could throw an error if called without first authenticating.

For further information on what options are available, what methods are exposed, their return types and respective request options, consult the JSDoc comment documentation.

Usage as a Set of Command-Line Utilities

This package provides scripts for easily and conveniently sending requests to Traffic Ops directly from your Linux shell. These are listed below.

• todelete - Sends DELETE requests
• toget - Sends GET requests
• tohead - Sends HEAD requests
• tooptions - Sends OPTIONS requests
• topatch - Sends PATCH requests
• topost - Sends POST requests
• toput - Sends PUT requests

Note that at the time of this writing, no Traffic Ops API endpoints support the PATCH or HEAD HTTP request methods.

The flags and required positional arguments can be found by calling e.g. toget --help (or just toget -h). All of these scripts support the same set of options and arguments and option-arguments, so if you've read one help message, you've read them all.

For information on which Traffic Ops API endpoints are available, consult the 'Traffic Ops API' section of the Apache Traffic Control documentation.

Testing

Currently, the only tests are "integration" tests that just call as many of the methods of the Client as possible (some have bugs in the TO API at the time of this writing that prevent proper usage, some have obscure or confusing requirements that cannot be guaranteed to be met during testing etc.) and just recording how many fail.

In order to run these tests, the following requirements must be met:

• You must be running a Linux or Linux-like operating system with NodeJS installed.
• An accessible Traffic Ops instance running at localhost on port 6443 (allowing specifying this is on my to-do list; for now its CDN-in-a-Box standard).
• The Types registered with your Traffic Ops instance must be sufficient to create all of the different objects to which a Type might refer (generally this shouldn't be a problem for users that started at ATCv3 or later).
• The running user must have the username admin and the password twelve12 (allowing specifying this is on my to-do list; for now its CDN-in-a-Box standard).
• The running user must be in the "root" Tenant, and must have a Role with "admin-level" Permissions (privLevel >= 30 in legacy API versions, or literally the special Role admin in newer versions - which are unimplemented at the time of this writing).

To run the tests, use npm test. It will output the request method, API-version-path-relative path (e.g. /users for /api/4.1/users), and the parsed response JSON (for JSON responses) for each of the requests it runs, and at the end will print the requests that failed on consecutive lines. This outputs a lot, so you may wish to pipe it to a file for later viewing. The exit code of the test script will be the number of failed requests. Note that at the time of this writing, deficiencies in the CDN-in-a-Box environment will cause POST /consistenthash, PUT /user/current (this can be fixed by modifying the admin user to be valid), and POST /isos to always fail when the tests are run against that environment.