Switch to utf8mb4 (#12580)

* Switch to utf8mb4 This allows emojis to function correctly * Update URLs
2024-10-07 16:52:45 +00:00 · 2021-03-28 16:23:08 +02:00
parent 896386d2c7
commit f06e81b357
21 changed files with 2152 additions and 1653 deletions
--- a/database/migrations/2021_02_09_122930_migrate_to_utf8mb4.php
+++ b/database/migrations/2021_02_09_122930_migrate_to_utf8mb4.php
@@ -0,0 +1,81 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Support\Facades\DB;
+
+class MigrateToUtf8mb4 extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        $this->migrateCharsetTo('utf8mb4', 'utf8mb4_unicode_ci');
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        $this->migrateCharsetTo('utf8', 'utf8_unicode_ci');
+    }
+
+    protected function migrateCharsetTo($charset, $collation)
+    {
+        if (\LibreNMS\DB\Eloquent::getDriver() != 'mysql') {
+            return;
+        }
+
+        $databaseName = DB::connection()->getDatabaseName();
+
+        // Change default charset and collation
+        DB::unprepared("ALTER SCHEMA `{$databaseName}` DEFAULT CHARACTER SET {$charset} DEFAULT COLLATE {$collation};");
+
+        // Get the list of all tables
+        $tableNames = DB::table('information_schema.tables')
+            ->where('table_schema', $databaseName)
+            ->get(['TABLE_NAME'])
+            ->pluck('TABLE_NAME');
+
+        // Iterate through the list and alter each table
+        foreach ($tableNames as $tableName) {
+            DB::unprepared("ALTER TABLE `{$tableName}` CHARACTER SET {$charset} COLLATE {$collation};");
+        }
+
+        // Get the list of all columns that have a collation
+        $columns = DB::table('information_schema.columns')
+            ->where('table_schema', $databaseName)
+            ->whereNotNull('CHARACTER_SET_NAME')
+            ->whereNotNull('COLLATION_NAME')
+            ->where(function ($query) use ($charset, $collation) {
+                $query->where('CHARACTER_SET_NAME', '!=', $charset)
+                      ->orWhere('COLLATION_NAME', '!=', $collation);
+            })
+            ->get();
+
+        // Iterate through the list and alter each column
+        foreach ($columns as $column) {
+            $null = $column->IS_NULLABLE == 'YES' ? 'NULL' : 'NOT NULL';
+
+            $default = null;
+            if (is_null($column->COLUMN_DEFAULT) || $column->COLUMN_DEFAULT == 'NULL') {
+                //
+            } else {
+                $default = "DEFAULT '" . trim($column->COLUMN_DEFAULT, '\'') . "'";
+            }
+
+            $sql = "ALTER TABLE `{$column->TABLE_NAME}`
+                    MODIFY `{$column->COLUMN_NAME}`
+                    {$column->COLUMN_TYPE}
+                    CHARACTER SET {$charset}
+                    COLLATE {$collation}
+                    {$null} {$default};";
+            DB::unprepared($sql);
+        }
+    }
+}