fixes: MRN generation race condition and Sepsis bundle creation race condition (TOCTOU)

2026-06-21 16:37:22 +08:00
parent 4583bd7f44
commit 076e8364b2
8 changed files with 2635 additions and 7 deletions
@@ -0,0 +1,36 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace VigilCareClinicalAPI.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddMrnSequence : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.Sql(@"
+                DO $$
+                DECLARE
+                    next_val bigint;
+                BEGIN
+                    SELECT COALESCE(MAX(
+                        CASE WHEN mrn ~ '^MRN-[0-9]+$'
+                             THEN CAST(SUBSTRING(mrn FROM 5) AS bigint)
+                             ELSE 0
+                        END
+                    ), 0) + 1 INTO next_val FROM patients;
+
+                    EXECUTE format('CREATE SEQUENCE mrn_seq START WITH %s INCREMENT BY 1', next_val);
+                END $$;
+            ");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.Sql("DROP SEQUENCE IF EXISTS mrn_seq;");
+        }
+    }
+}