Drop database backup logic, because duplicating a relative large database likely causes a disk space issue, users should take backup manually instead.

server/database.js

@@ -199,15 +199,7 @@ class Database {
         } else {
             log.info("db", "Database patch is needed");
 
-            try {
-                this.backup(version);
-            } catch (e) {
-                log.error("db", e);
-                log.error("db", "Unable to create a backup before patching the database. Please make sure you have enough space and permission.");
-                process.exit(1);
-            }
-
-            // Try catch anything here, if gone wrong, restore the backup
+            // Try catch anything here
             try {
                 for (let i = version + 1; i <= this.latestVersion; i++) {
                     const sqlFile = `./db/patch${i}.sql`;
@@ -223,7 +215,6 @@ class Database {
                 log.error("db", "Start Uptime-Kuma failed due to issue patching the database");
                 log.error("db", "Please submit a bug report if you still encounter the problem after restart: https://github.com/louislam/uptime-kuma/issues");
 
-                this.restore();
                 process.exit(1);
             }
         }
@@ -265,8 +256,6 @@ class Database {
             log.error("db", "Start Uptime-Kuma failed due to issue patching the database");
             log.error("db", "Please submit the bug report if you still encounter the problem after restart: https://github.com/louislam/uptime-kuma/issues");
 
-            this.restore();
-
             process.exit(1);
         }
 
@@ -451,100 +440,6 @@ class Database {
         process.removeListener("unhandledRejection", listener);
     }
 
-    /**
-     * One backup one time in this process.
-     * Reset this.backupPath if you want to backup again
-     * @param {string} version Version code of backup
-     */
-    static backup(version) {
-        if (! this.backupPath) {
-            log.info("db", "Backing up the database");
-            this.backupPath = this.dataDir + "kuma.db.bak" + version;
-            fs.copyFileSync(Database.path, this.backupPath);
-
-            const shmPath = Database.path + "-shm";
-            if (fs.existsSync(shmPath)) {
-                this.backupShmPath = shmPath + ".bak" + version;
-                fs.copyFileSync(shmPath, this.backupShmPath);
-            }
-
-            const walPath = Database.path + "-wal";
-            if (fs.existsSync(walPath)) {
-                this.backupWalPath = walPath + ".bak" + version;
-                fs.copyFileSync(walPath, this.backupWalPath);
-            }
-
-            // Double confirm if all files actually backup
-            if (!fs.existsSync(this.backupPath)) {
-                throw new Error("Backup failed! " + this.backupPath);
-            }
-
-            if (fs.existsSync(shmPath)) {
-                if (!fs.existsSync(this.backupShmPath)) {
-                    throw new Error("Backup failed! " + this.backupShmPath);
-                }
-            }
-
-            if (fs.existsSync(walPath)) {
-                if (!fs.existsSync(this.backupWalPath)) {
-                    throw new Error("Backup failed! " + this.backupWalPath);
-                }
-            }
-        }
-    }
-
-    /** Restore from most recent backup */
-    static restore() {
-        if (this.backupPath) {
-            log.error("db", "Patching the database failed!!! Restoring the backup");
-
-            const shmPath = Database.path + "-shm";
-            const walPath = Database.path + "-wal";
-
-            // Make sure we have a backup to restore before deleting old db
-            if (
-                !fs.existsSync(this.backupPath)
-                && !fs.existsSync(shmPath)
-                && !fs.existsSync(walPath)
-            ) {
-                log.error("db", "Backup file not found! Leaving database in failed state.");
-                process.exit(1);
-            }
-
-            // Delete patch failed db
-            try {
-                if (fs.existsSync(Database.path)) {
-                    fs.unlinkSync(Database.path);
-                }
-
-                if (fs.existsSync(shmPath)) {
-                    fs.unlinkSync(shmPath);
-                }
-
-                if (fs.existsSync(walPath)) {
-                    fs.unlinkSync(walPath);
-                }
-            } catch (e) {
-                log.error("db", "Restore failed; you may need to restore the backup manually");
-                process.exit(1);
-            }
-
-            // Restore backup
-            fs.copyFileSync(this.backupPath, Database.path);
-
-            if (this.backupShmPath) {
-                fs.copyFileSync(this.backupShmPath, shmPath);
-            }
-
-            if (this.backupWalPath) {
-                fs.copyFileSync(this.backupWalPath, walPath);
-            }
-
-        } else {
-            log.info("db", "Nothing to restore");
-        }
-    }
-
     /** Get the size of the database */
     static getSize() {
         log.debug("db", "Database.getSize()");