timer-server

Uses Apollo/GraphQL/Nodejs to accept requests to terminate a zoom-session and sends these notifications into CockroachDB

cURL Examples

Get all existing terminations

curl 'http://localhost:4000/' \
-H 'Accept-Encoding: gzip, deflate, br' \
-H 'Content-Type: application/json' \
-H 'Accept: application/json' \
-H 'Connection: keep-alive' \
-H 'DNT: 1' \
-H 'Origin: http://localhost:4000' \
--data-binary '{"query":"query GetTerminations {\n  terminations {\n    id\n    zoomId\n    terminateTime\n  }\n}"}' \
--compressed

Example output

{
  "data": {
    "terminations": [
      {
        "id": "2fa1cee5-41fd-4880-8812-dd40dfbb587b",
        "zoomId": "987653245345",
        "terminateTime": "2020-09-05T00:55:10.445Z"
      },
      {
        "id": "46ab0752-8e2f-41ad-9415-4b46c848d33c",
        "zoomId": "987653245346",
        "terminateTime": "2020-09-05T00:55:16.357Z"
      },
      {
        "id": "8191aa3c-8213-4a72-98a1-91e4f6acbbd5",
        "zoomId": "987653245345",
        "terminateTime": "2020-09-05T00:55:22.093Z"
      }
    ]
  }
}

Create a termination

curl 'http://localhost:4000/' \
-H 'Accept-Encoding: gzip, deflate, br' \
-H 'Content-Type: application/json' \
-H 'Accept: application/json' \
-H 'Connection: keep-alive' \
-H 'DNT: 1' \
-H 'Origin: http://localhost:4000' \
--data-binary '{"query":"mutation CreateTermination {\n  addTermination(zoomId: \"0d6ef08f-98e0-4e2f-8dc0-8439bc7963f3\", timeLeftMinutes: 10) {\n    id\n    zoomId\n    terminateTime\n  }  \n}"}' \
--compressed

Example output

{
  "data": {
    "addTermination": {
      "id": "f8545885-d68c-44ed-8909-5368b46c3352",
      "zoomId": "0d6ef08f-98e0-4e2f-8dc0-8439bc7963f3",
      "terminateTime": "2020-09-05T00:56:08.049Z"
    }
  }
}

We recommend piping the output into jq.

Using the Playground

When running the server locally, we can access http://localhost:4000/ and run graphQL queries directly in the playground instead of using cURL.

Examples:

Create A Session Termination

mutation CreateTermination {
  addTermination(zoomId: "987653245345", timeLeftMinutes: 10) {
    id
    zoomId
    terminateTime
  }  
}

Get All Existing Terminations

query GetTerminations {
  terminations {
    id
    zoomId
    terminateTime
  }
}

Motivation

Cigi is a Tikal fuseday project that was created on Sep 2020 in order to provide a slack chatbot that allows you to open a zoom-session for a few minutes inviting other channel members to join you for a ciggarette.

Timer-server is one of cigi's micro-services and its roll is to get requests for terminations of zoom-sessions and save them on CockroachDB.

Per Cigi Tech Design timer-server accepts graphQL requests from cigi-server and based on their input adds notifications to terminate existing zoom sessions at a specific timestamp.

Installation

Assuming cockroachDB and the other relevant micro-services are already present.

Simply do: npm install

Setup

The following env variables may be configured either directly or via vault or a similar tool in Kubernetes:

Server setup

• SERVER_PORT - on which port timer-server should run, defaults to 4000

CockroachDB setup

• DB_HOST - defaults to localhost
• DB_NAME - defaults to zoomkiller
• DB_PORT - defaults to 26257
• DB_USER - defaults to maxroach
• DB_PWD - defaults to '' (empty string)

Running The Server

npm start

Run tests

npm test

API Reference

Requirements detailed here

License

Apache License 2.0