From 61167f664644a60d207e7d2d8a0c3bedd2543397 Mon Sep 17 00:00:00 2001
From: zadam <adam.zivner@gmail.com>
Date: Tue, 14 Apr 2020 22:15:55 +0200
Subject: [PATCH] make sure to close sqlite connection on exit

---
 src/services/sql.js | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/services/sql.js b/src/services/sql.js
index dba837c51..a928f319e 100644
--- a/src/services/sql.js
+++ b/src/services/sql.js
@@ -9,6 +9,16 @@ function setDbConnection(connection) {
     dbConnection = connection;
 }
 
+[`exit`, `SIGINT`, `SIGUSR1`, `SIGUSR2`, `uncaughtException`, `SIGTERM`].forEach(eventType => {
+    process.on(eventType, () => {
+        if (dbConnection) {
+            // closing connection is especially important to fold -wal file into the main DB file
+            // (see https://sqlite.org/tempfiles.html for details)
+            dbConnection.close();
+        }
+    });
+});
+
 async function insert(tableName, rec, replace = false) {
     const keys = Object.keys(rec);
     if (keys.length === 0) {