Allow making archives permanent. Make archives permanent when attached to a case. Add log file metadata dynamically when served (instead of in the body directly). Add missing index on archives.expires_at.

src/migrations/1547392046629-AddIndexToArchivesExpiresAt.ts

@@ -0,0 +1,21 @@
+import { MigrationInterface, QueryRunner, TableColumn, TableIndex } from "typeorm";
+
+export class AddIndexToArchivesExpiresAt1547392046629 implements MigrationInterface {
+  public async up(queryRunner: QueryRunner): Promise<any> {
+    await queryRunner.createIndex(
+      "archives",
+      new TableIndex({
+        columnNames: ["expires_at"]
+      })
+    );
+  }
+
+  public async down(queryRunner: QueryRunner): Promise<any> {
+    await queryRunner.dropIndex(
+      "archives",
+      new TableIndex({
+        columnNames: ["expires_at"]
+      })
+    );
+  }
+}