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Uptime Monitoring

Purpose

The purpose of this plugin is to provide users of Heartbeat more visibility of what's happening in their infrastructure.

Layout

There are three sections to the app, common, public, and server.

common

Contains runtime types types, constants and a few other files.

Notably, we use io-ts/fp-ts functions and types to help provide additional runtime safety for our API requests/responses.

public

We use Redux and associated tools for managing our app state. Components come in the usual connected and presentational varieties.

The lib directory controls bootstrapping code and adapter types.

There is a pages directory; each view gets its own page component.

The principal structure of the app is stored in uptime_app.tsx.

server

The lib directory contains adapters, which are connections to external resources like Kibana Server, Elasticsearch, etc. In addition, it contains domains, which are libraries that provide functionality via adapters.

The requests directory contains functions responsible for querying Elasticsearch and parsing its responses.

There's also a rest_api folder that defines the structure of the RESTful API endpoints.

Testing

Unit tests

Documentation: https://www.elastic.co/guide/en/kibana/current/development-tests.html#_unit_testing

yarn test:jest x-pack/plugins/uptime

Functional tests

In one shell, from ~/kibana/x-pack: node scripts/functional_tests_server.js

In another shell, from ~kibana/x-pack: node ../scripts/functional_test_runner.js --grep="{TEST_NAME}".

API tests

If instead you need to run API tests, start up the test server and then in another shell, from ~kibana/x-pack:

node ../scripts/functional_test_runner.js --config test/api_integration/config.ts --grep="{TEST_NAME}".

You can update snapshots by prefixing the runner command with env UPDATE_UPTIME_FIXTURES=1

You can access the functional test server's Kibana at http://localhost:5620/.

You can login with username elastic and password changeme by default.

If you want to freeze a UI or API test you can include an async call like await new Promise(r => setTimeout(r, 1000 * 60)) to freeze the execution for 60 seconds if you need to click around or check things in the state that is loaded.

Running --ssl tests

Some of our tests require there to be an SSL connection between Kibana and Elasticsearch.

We can run these tests like described above, but with some special config.

node scripts/functional_tests_server.js --config=test/functional_with_es_ssl/config.ts

node scripts/functional_test_runner.js --config=test/functional_with_es_ssl/config.ts

Running accessibility tests

We maintain a suite of Accessibility tests (you may see them referred to elsewhere as a11y tests).

These tests render each of our pages and ensure that the inputs and other elements contain the attributes necessary to ensure all users are able to make use of Kibana (for example, users relying on screen readers).

The commands for running these tests are very similar to the other functional tests described above.

From the ~/x-pack directory:

Start the server: node scripts/functional_tests_server --config test/accessibility/config.ts

Run the uptime a11y tests: node scripts/functional_test_runner.js --config test/accessibility/config.ts --grep=uptime