Clean up files not access in 30 days from the cache folder

Stephen Paul Weber created 2 years ago

Or maybe it will be ones created more than 30 days ago, depending on the
device, but still it means the cache won't grow unbounded and we can
always fetch again if really needed.

Change summary

src/main/java/eu/siacs/conversations/services/XmppConnectionService.java | 21 
1 file changed, 21 insertions(+)

Detailed changes

src/main/java/eu/siacs/conversations/services/XmppConnectionService.java

@@ -834,6 +834,26 @@ public class XmppConnectionService extends Service {
         });
     }
 
+    protected void cleanupCache() {
+         mStickerScanExecutor.execute(() -> {
+            Thread.currentThread().setPriority(Thread.MIN_PRIORITY);
+            final var now = System.currentTimeMillis();
+            try {
+                for (File file : Files.fileTraverser().breadthFirst(getCacheDir())) {
+                    if (file.isFile() && file.canRead() && file.canWrite()) {
+                        final var attrs = java.nio.file.Files.readAttributes(file.toPath(), java.nio.file.attribute.BasicFileAttributes.class);
+                        if ((now - attrs.lastAccessTime().toMillis()) > 1000 * 60 * 60 * 24 * 30) {
+                            Log.d(Config.LOGTAG, "cleanupCache removing file not used in one week: " + file);
+                            file.delete();
+                        }
+                    }
+                }
+            } catch (final Exception e) {
+                Log.w(Config.LOGTAG, "cleanupCache " + e);
+            }
+        });
+    }
+
     public EmojiSearch emojiSearch() {
         return emojiSearch;
     }
@@ -1595,6 +1615,7 @@ public class XmppConnectionService extends Service {
         mForceDuringOnCreate.set(false);
         toggleForegroundService();
         rescanStickers();
+        cleanupCache();
         internalPingExecutor.scheduleAtFixedRate(this::manageAccountConnectionStatesInternal,10,10,TimeUnit.SECONDS);
         final SharedPreferences sharedPreferences =
                 androidx.preference.PreferenceManager.getDefaultSharedPreferences(this);