Initial commit

src/worker/delete-deprecated-purchases.ts

@@ -0,0 +1,85 @@
+/*
+ * server component for the TimeLimit App
+ * Copyright (C) 2019 Jonas Lochmann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import * as Sequelize from 'sequelize'
+import { Database } from '../database'
+import { notifyClientsAboutChanges } from '../function/websocket'
+import { WebsocketApi } from '../websocket'
+
+export function initDeleteDeprecatedPurchasesWorker ({ database, websocket }: {
+  database: Database
+  websocket: WebsocketApi
+}) {
+  function doWorkSafe () {
+    deleteDeprecatedPurchases({ database, websocket }).catch((ex) => {
+      console.warn('error deleting deprecated purchases', ex)
+    })
+  }
+
+  setTimeout(() => {
+    doWorkSafe()
+
+    setInterval(() => {
+      doWorkSafe()
+    }, 1000 * 60 * 60 /* every hour */)
+  }, 1000 * 60 * 5 /* after 5 minutes */)
+}
+
+async function deleteDeprecatedPurchases ({ database, websocket }: {
+  database: Database
+  websocket: WebsocketApi
+}) {
+  const { affectedFamilyIds } = await database.transaction(async (transaction) => {
+    const affectedFamilyIds = await database.family.findAll({
+      where: {
+        hasFullVersion: true,
+        fullVersionUntil: {
+          [Sequelize.Op.lt]: Date.now().toString(10)
+        }
+      },
+      attributes: ['familyId'],
+      transaction,
+      lock: Sequelize.Transaction.LOCK.UPDATE,
+      limit: 100
+    }).map((item) => item.familyId)
+
+    await database.family.update({
+      hasFullVersion: false
+    }, {
+      where: {
+        familyid: {
+          [Sequelize.Op.in]: affectedFamilyIds
+        }
+      },
+      transaction
+    })
+
+    return { affectedFamilyIds }
+  })
+
+  for (let i = 0; i < affectedFamilyIds.length; i++) {
+    const familyId = affectedFamilyIds[i]
+
+    await notifyClientsAboutChanges({
+      familyId,
+      sourceDeviceId: null,
+      database,
+      websocket,
+      isImportant: true
+    })
+  }
+}