embed schema migration scripts

controller/migrator.go

@@ -1,6 +1,7 @@
 package controller
 
 import (
+	"embed"
 	"fmt"
 	"os"
 	"time"
@@ -8,7 +9,7 @@ import (
 	"github.com/jmoiron/sqlx"
 )
 
-const DB_VERSION int = 4
+const DB_VERSION int = 5
 
 func CheckDBVersionAndMigrate(db *sqlx.DB) {
     db.MustExec("CREATE SCHEMA IF NOT EXISTS arimelody")
@@ -49,16 +50,23 @@ func CheckDBVersionAndMigrate(db *sqlx.DB) {
             ApplyMigration(db, "003-fail-lock")
             oldDBVersion = 4
 
+        case 4:
+            ApplyMigration(db, "004-test")
+            oldDBVersion = 5
+
         }
     }
 
     fmt.Printf("Database schema up to date.\n")
 }
 
+//go:embed "schema-migration"
+var schemaFS embed.FS
+
 func ApplyMigration(db *sqlx.DB, scriptFile string) {
     fmt.Printf("Applying schema migration %s...\n", scriptFile)
 
-    bytes, err := os.ReadFile("schema-migration/" + scriptFile + ".sql")
+    bytes, err := schemaFS.ReadFile("schema-migration/" + scriptFile + ".sql")
     if err != nil {
         fmt.Fprintf(os.Stderr, "FATAL: Failed to open schema file \"%s\": %v\n", scriptFile, err)
         os.Exit(1)

controller/schema-migration/004-test.sql

@@ -0,0 +1 @@
+INSERT INTO arimelody.auditlog (level, type, content) VALUES (0, "test", "this is a db schema migration test!");