Merge pull request #934 from tzjan/FixExtensionFileCacheLookup

Fix extension file cache lookup

Author: janakmulani

core/src/main/java/net/adoptopenjdk/icedteaweb/jnlp/element/resource/ExtensionDesc.java

@@ -131,7 +131,7 @@ public URL getLocation() {
      */
     public void resolve() throws ParseException, IOException {
         if (file == null) {
-            file = new JNLPFileFactory().create(location);
+            file = new JNLPFileFactory().create(location, version);
 
             LOG.debug("Resolve: {}", file.getInformation().getTitle());
 

core/src/main/java/net/adoptopenjdk/icedteaweb/resources/cache/CacheImpl.java

@@ -238,14 +238,14 @@ Optional<CacheIndexEntry> getBestMatchingEntryInCache(final URL resourceHref, fi
                 .findFirst();
     }
 
+    /**
+     * Return all valid cache entries with this URL, regardless of whether they have a version or not. They are not sorted.
+     * @param resourceHref
+     * @return
+     */
     List<CacheIndexEntry> getAllEntriesInCache(final URL resourceHref) {
         final List<CacheIndexEntry> all = new ArrayList<>(cacheIndex.getSynchronized(idx -> idx.findAllEntries(resourceHref)));
 
-        if (all.size() > 1) {
-            final Comparator<CacheIndexEntry> versionComparator = comparing(CacheIndexEntry::getVersion);
-            all.sort(versionComparator);
-        }
-
         return all.stream()
                 .filter(entry -> getInfoFile(entry).isCached())
                 .collect(Collectors.toList());

core/src/main/java/net/sourceforge/jnlp/JNLPFileFactory.java

@@ -49,6 +49,31 @@ public JNLPFile create(final URL location) throws IOException, ParseException {
         return create(location, new ParserSettings());
     }
 
+    /**
+     * Generate unique key from file URL
+     * @param location
+     */
+    private String createUniqueKey(final URL location) {
+        return Calendar.getInstance().getTimeInMillis() + "-" + ((int) (Math.random() * Integer.MAX_VALUE)) + "-" + location;
+    }
+
+    /**
+     * Create a JNLPFile from a URL and version and checking for
+     * updates using the default policy.
+     *
+     * @param location the location of the JNLP file
+     * @param version  the version of the JNLP file
+     * @throws IOException    if an IO exception occurred
+     * @throws ParseException if the JNLP file was invalid
+     */
+    public JNLPFile create(final URL location, final VersionString version) throws IOException, ParseException {
+        return create(location,
+                      createUniqueKey(location),
+                      version,
+                      new ParserSettings(),
+                      JNLPRuntime.getDefaultUpdatePolicy());
+    }
+
     /**
      * Create a JNLPFile from a URL checking for updates using the
      * default policy.
@@ -59,7 +84,7 @@ public JNLPFile create(final URL location) throws IOException, ParseException {
      * @throws ParseException if the JNLP file was invalid
      */
     public JNLPFile create(final URL location, final ParserSettings settings) throws IOException, ParseException {
-        final String uniqueKey = Calendar.getInstance().getTimeInMillis() + "-" + ((int) (Math.random() * Integer.MAX_VALUE)) + "-" + location;
+        final String uniqueKey = createUniqueKey(location);
         return create(location, uniqueKey, null, settings, JNLPRuntime.getDefaultUpdatePolicy());
     }