Add pulse database migration

Author: digitlimit

database/migrations/2023_06_07_000001_create_pulse_tables.php

@@ -0,0 +1,84 @@
+<?php
+
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+use Laravel\Pulse\Support\PulseMigration;
+
+return new class extends PulseMigration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        if (! $this->shouldRun()) {
+            return;
+        }
+
+        Schema::create('pulse_values', function (Blueprint $table) {
+            $table->id();
+            $table->unsignedInteger('timestamp');
+            $table->string('type');
+            $table->mediumText('key');
+            match ($this->driver()) {
+                'mysql' => $table->char('key_hash', 16)->charset('binary')->virtualAs('unhex(md5(`key`))'),
+                'pgsql' => $table->uuid('key_hash')->storedAs('md5("key")::uuid'),
+                'sqlite' => $table->string('key_hash'),
+            };
+            $table->mediumText('value');
+
+            $table->index('timestamp'); // For trimming...
+            $table->index('type'); // For fast lookups and purging...
+            $table->unique(['type', 'key_hash']); // For data integrity and upserts...
+        });
+
+        Schema::create('pulse_entries', function (Blueprint $table) {
+            $table->id();
+            $table->unsignedInteger('timestamp');
+            $table->string('type');
+            $table->mediumText('key');
+            match ($this->driver()) {
+                'mysql' => $table->char('key_hash', 16)->charset('binary')->virtualAs('unhex(md5(`key`))'),
+                'pgsql' => $table->uuid('key_hash')->storedAs('md5("key")::uuid'),
+                'sqlite' => $table->string('key_hash'),
+            };
+            $table->bigInteger('value')->nullable();
+
+            $table->index('timestamp'); // For trimming...
+            $table->index('type'); // For purging...
+            $table->index('key_hash'); // For mapping...
+            $table->index(['timestamp', 'type', 'key_hash', 'value']); // For aggregate queries...
+        });
+
+        Schema::create('pulse_aggregates', function (Blueprint $table) {
+            $table->id();
+            $table->unsignedInteger('bucket');
+            $table->unsignedMediumInteger('period');
+            $table->string('type');
+            $table->mediumText('key');
+            match ($this->driver()) {
+                'mysql' => $table->char('key_hash', 16)->charset('binary')->virtualAs('unhex(md5(`key`))'),
+                'pgsql' => $table->uuid('key_hash')->storedAs('md5("key")::uuid'),
+                'sqlite' => $table->string('key_hash'),
+            };
+            $table->string('aggregate');
+            $table->decimal('value', 20, 2);
+            $table->unsignedInteger('count')->nullable();
+
+            $table->unique(['bucket', 'period', 'type', 'aggregate', 'key_hash']); // Force "on duplicate update"...
+            $table->index(['period', 'bucket']); // For trimming...
+            $table->index('type'); // For purging...
+            $table->index(['period', 'type', 'aggregate', 'bucket']); // For aggregate queries...
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('pulse_values');
+        Schema::dropIfExists('pulse_entries');
+        Schema::dropIfExists('pulse_aggregates');
+    }
+};