wip: attempt to backup / restore data to / from file

Author: metacosm

server/src/main/java/net/laprun/sustainability/power/PowerResource.java

@@ -53,4 +53,10 @@ public Duration samplingPeriod() {
     public List<Measure> measures(@PathParam("pid") String pid) throws Exception {
         return Measure.forPID(Long.parseLong(pid));
     }
+
+    @GET
+    @Path("pids")
+    public List<String> pids() {
+        return Measure.all().stream().map(m -> "" + m.pid).toList();
+    }
 }

server/src/main/java/net/laprun/sustainability/power/persistence/Measure.java

@@ -16,4 +16,8 @@ public class Measure extends PanacheEntity {
     public static List<Measure> forPID(long pid) {
         return find("pid", pid).list();
     }
+
+    public static List<Measure> all() {
+        return Measure.findAll().list();
+    }
 }

server/src/main/java/net/laprun/sustainability/power/persistence/SQLiteFilePersister.java

@@ -11,7 +11,6 @@
 
 import io.quarkus.logging.Log;
 import io.quarkus.runtime.ShutdownEvent;
-import io.quarkus.runtime.StartupEvent;
 
 public class SQLiteFilePersister {
     @ConfigProperty(name = "quarkus.datasource.jdbc.url")
@@ -20,9 +19,16 @@ public class SQLiteFilePersister {
     @ConfigProperty(name = "power-server.db.location")
     String fileName;
 
-    public void onStartup(@Observes StartupEvent event) {
-
-    }
+    //    public void onStartup(@Observes StartupEvent event) {
+    //        Log.info("Restoring data from " + fileName);
+    //        try (
+    //                Connection connection = DriverManager.getConnection(jdbcUrl);
+    //                Statement statement = connection.createStatement()) {
+    //            statement.executeUpdate("restore from " + fileName);
+    //        } catch (SQLException e) {
+    //            e.printStackTrace(System.err);
+    //        }
+    //    }
 
     public void onShutdown(@Observes ShutdownEvent event) {
         Log.info("Saving data to " + fileName);