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classes/migration/upgrade/v3_4_0/I6782_MetricsIssue.php

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+<?php
+
+/**
+ * @file classes/migration/upgrade/v3_4_0/I6782_MetricsIssue.php
+ *
+ * Copyright (c) 2022 Simon Fraser University
+ * Copyright (c) 2022 John Willinsky
+ * Distributed under the GNU GPL v3. For full terms see the file docs/COPYING.
+ *
+ * @class I6782_MetricsIssue
+ *
+ * @brief Migrate issue stats data from the old DB table metrics into the new DB table metrics_issue.
+ */
+
+namespace APP\migration\upgrade\v3_4_0;
+
+use Illuminate\Support\Facades\DB;
+use PKP\config\Config;
+use PKP\install\DowngradeNotSupportedException;
+use PKP\migration\Migration;
+
+class I6782_MetricsIssue extends Migration
+{
+    private const ASSOC_TYPE_ISSUE = 0x0000103;
+    private const ASSOC_TYPE_ISSUE_GALLEY = 0x0000105;
+
+    /**
+     * Run the migration.
+     */
+    public function up(): void
+    {
+        $dayFormatSql = "DATE_FORMAT(STR_TO_DATE(m.day, '%Y%m%d'), '%Y-%m-%d')";
+        if (substr(Config::getVar('database', 'driver'), 0, strlen('postgres')) === 'postgres') {
+            $dayFormatSql = "to_date(m.day, 'YYYYMMDD')";
+        }
+
+        // The not existing foreign keys should already be moved to the metrics_tmp in I6782_OrphanedMetrics
+        // Migrate issue metrics; consider issue TOCs and galley files
+        $selectIssueMetrics = DB::table('metrics as m')
+            ->select(DB::raw("m.load_id, m.context_id, m.assoc_id, null, {$dayFormatSql}, m.metric"))
+            ->where('m.assoc_type', '=', self::ASSOC_TYPE_ISSUE)
+            ->where('m.metric_type', '=', 'ojs::counter');
+        DB::table('metrics_issue')->insertUsing(['load_id', 'context_id', 'issue_id', 'issue_galley_id', 'date', 'metric'], $selectIssueMetrics);
+
+        $selectIssueGalleyMetrics = DB::table('metrics as m')
+            ->join('issue_galleys as ig', 'ig.galley_id', '=', 'm.assoc_id')
+            ->select(DB::raw("m.load_id, m.context_id, ig.issue_id, m.assoc_id, {$dayFormatSql}, m.metric"))
+            ->where('m.assoc_type', '=', self::ASSOC_TYPE_ISSUE_GALLEY)
+            ->where('m.metric_type', '=', 'ojs::counter');
+        DB::table('metrics_issue')->insertUsing(['load_id', 'context_id', 'issue_id', 'issue_galley_id', 'date', 'metric'], $selectIssueGalleyMetrics);
+    }
+
+    /**
+     * Reverse the downgrades
+     *
+     * @throws DowngradeNotSupportedException
+     */
+    public function down(): void
+    {
+        throw new DowngradeNotSupportedException();
+    }
+}