hotfix version check

core/src/main/java/ru/kirillius/pf/sdn/core/AppUpdateService.java

@@ -6,7 +6,9 @@ import ru.kirillius.utils.logging.SystemLogger;
 
 import javax.xml.XMLConstants;
 import javax.xml.parsers.DocumentBuilderFactory;
+import java.io.FileNotFoundException;
 import java.io.IOException;
+import java.io.InputStream;
 import java.net.URI;
 import java.net.http.HttpClient;
 import java.net.http.HttpRequest;
@@ -50,18 +52,27 @@ public class AppUpdateService extends AppService {
                 .build();
     }
 
+    private InputStream openPomFile() throws IOException {
+
+        var stream = getClass().getClassLoader().getResourceAsStream(hardcodedPomPath);
+        if (stream == null) {
+            var pomPath = findPomFile();
+            if (pomPath == null) {
+                throw new FileNotFoundException("Unable to locate pom.xml to determine application version");
+            }
+            return Files.newInputStream(pomPath);
+        }
+        return stream;
+    }
+
     /**
      * Determines the current application version using the nearest {@code pom.xml}.
      *
      * @return semantic version string or {@code "unknown"} when unavailable.
      */
     public String getAppVersion() {
-        var pomPath = findPomFile();
-        if (pomPath == null) {
-            SystemLogger.error("Unable to locate pom.xml to determine application version", CTX);
-            return "unknown";
-        }
-        try (var input = Files.newInputStream(pomPath)) {
+
+        try (var input = openPomFile()) {
             var factory = DocumentBuilderFactory.newInstance();
             try {
                 factory.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, true);
@@ -230,6 +241,8 @@ public class AppUpdateService extends AppService {
         return null;
     }
 
+    private final static String hardcodedPomPath = "META-INF/maven/ru.kirillius/pf-sdn.app/pom.xml";
+
     /**
      * Extracts a version value from the given XML element if present.
      */