like-service

Like Service

Provides REST endpoints for retrieving and updating like counts for posts in MariaDB:

• POST like-service/like/123 (likes post with postId 123)
• DELETE like-service/like?postId=123 (unlikes post with postId 123)
• GET like-service/like?postId=1&postId=2&postId=3&postId=4...

  Response:
  {
      "likeCounts": [
          {"postId": 1, "likeCount": 123},
          {"postId": 2, "likeCount": 456},
          {"postId": 3, "likeCount": 789},
          {"postId": 4, "likeCount": 135},
          ...
      ],
      "likedPosts": [
          {"postId": 1},
          {"postId": 3},
          ...
      ]
  }
  

All the endpoints require that a JWT cookie be sent for authentication with the the user-auth-service. This cookie is obtained by logging in and links the requests to a user ID.

How to run locally

The Like Service can either be run using skaffold dev (see DEV-GUIDE), or it can be run locally, provided that you have the following requirements installed.

Requirements

• PHP 8.0 with opentelemetry (e.g. version 1.0.0RC1) and MySQL (mysqli, pdo, pdo_mysql) extensions installed
• Composer (e.g. version 2.6.5; see Installing Composer)
• MariaDB instance (see user-auth-service README for setting it up)

Environment Variables

The following environment variables need to be set:

Name	Example Value	Description
SERVICE_NAME	unguard-like-service	Name of the service
API_PATH	/like-service	Api entrypoint path
SERVER_PORT	8000	The port that the server will run on
USER_AUTH_SERVICE_ADDRESS	unguard-user-auth-service	Change to hostname/IP of user-auth-service instance
DB_HOST	localhost	Address of MariaDB instance
DB_PORT	3306	Port of MariaDB instance
DB_DATABASE	likeDb	Database to create and use on the MariaDB instance
DB_USERNAME	root	Username of the MariaDB user
MARIADB_PASSWORD		Password of the MariaDB user
JAEGER_DISABLED	true	Set to 'false' if you have a Jaeger instance running
JAEGER_COLLECTOR_HOST	collector	Change to hostname/IP of your Jaeger collector
JAEGER_PORT	4318	The jaeger collector port for HTTP OTLP traffic
JAEGER_SERVICE_NAME	unguard-like-service	Name that will be used for the service in the Jaeger traces

Setup

Install the required packages:

composer install

Create the database and create tables:

php artisan make:database
php artisan migrate:fresh

Run Laravel:

php artisan serve