super-hog/database/migrations/2021_05_09_073140_create_logs_table.php

<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

class CreateLogsTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('logs', function (Blueprint $table) {
            $table->id();

            $table->json('message');
            $table->enum('state', [
                'critical', 'info', 'error'
            ]);

            $table->unsignedBigInteger('source_id');
            $table->foreign('source_id')
                ->references('id')
                ->on('sources');

            $table->timestamps();
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('logs');
    }
}