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Mock Observations Plugin

Introduction

A plugin for mocking observations (inputs) for testing and demo purposes

Scope

The mode currently mocks 2 types of observation data:

  • Common key-value pairs, that are generated statically and are the same for each generated observation/input (see 'helpers/CommonGenerator.ts')
  • Randomly generated integer values for predefined keys (see 'helpers/RandIntGenerator.ts')

Plugin global config

  • timestamp-from, timestamp-to and duration define time buckets for which to generate observations.
  • generators define which fields to generate for each observations
  • components define the components for which to generate observations for. The observations generated according to timestamp-from, timestamp-to, duration and generators will be duplicated for each component.

Authentication

N/A

Inputs

The plugin's global-config section in the manifest file determines its behaviour. 'inputs' section is ignored.

Typescript Usage

const mockObservations = MockObservations({
  'timestamp-from': '2023-07-06T00:00',
  'timestamp-to': '2023-07-06T00:10',
  duration: 60,
  components: {
    'instance-type': 'A1',
  },
  generators: {
    common: {
      region: 'uk-west',
    },
  },
});
const result = await mockObservations.execute([]);

manifest Example

IF users will typically call the plugin as part of a pipeline defined in a manifest file. In this case, instantiating the plugin is handled by ie and does not have to be done explicitly by the user. The following is an example manifest that calls mock-observation:

name: mock-observation-demo
description: example invoking mock-observation plugin
tags:
initialize:
  outputs:
    - yaml
  plugins:
    mock-observations:
      kind: plugin
      method: MockObservations
      path: '@grnsft/if-plugins'
      global-config:
        timestamp-from: 2023-07-06T00:00
        timestamp-to: 2023-07-06T00:10
        duration: 60
        components:
          - instance-type: A1
          - instance-type: B1
        generators:
          common:
            region: uk-west
            common-key: common-val
          randint:
            cpu/utilization:
              min: 1
              max: 99
            memory/utilization:
              min: 1
              max: 99
tree:
  children:
    child:
      pipeline:
        - mock-observations
      inputs:

You can run this example manifest by saving it as ./examples/manifests/test/mock-observation.yml and executing the following command from the project root:

npm i -g @grnsft/if
npm i -g @grnsft/if-plugins
ie --manifest ./examples/manifests/test/mock-observation.yml --output ./examples/outputs/mock-observation

The results will be saved to a new yaml file in ./examples/outputs.