[offload] fix FileSystemManagedLedgerOffloader can not cleanup outdat…

…ed ledger data (apache#12309)

### Motivation
When using FileSystem Offloader, and you set the ledger retention policy, after the offloaded ledger is outdated, however the data can not be deleted from file system. This is because the datafile path is wrong.

For example, in fact the datafile path is "file:///Users/pulsar_nfs/public/default/persistent/test_pulsar_delta/449-775f0961-9719-4658-8357-6b0edbdef7a3", but is mistaken formatted as "file:///Users/pulsar_nfs/null/449-775f0961-9719-4658-8357-6b0edbdef7a3".

The reason is when format the data path, "ManagedLedgerName" property in "offloadDriverMetadata" is missing.

### Modifications
Before format the data path, add "ManagedLedgerName" property in "offloadDriverMetadata" map.

(cherry picked from commit f283030)

managed-ledger/src/main/java/org/apache/bookkeeper/mledger/impl/ManagedLedgerImpl.java

@@ -3077,9 +3077,13 @@ private void cleanupOffloaded(long ledgerId, UUID uuid, String offloadDriverName
             Map<String, String> offloadDriverMetadata, String cleanupReason) {
         log.info("[{}] Cleanup offload for ledgerId {} uuid {} because of the reason {}.",
                 name, ledgerId, uuid.toString(), cleanupReason);
+        Map<String, String> metadataMap = Maps.newHashMap();
+        metadataMap.putAll(offloadDriverMetadata);
+        metadataMap.put("ManagedLedgerName", name);
+
         Retries.run(Backoff.exponentialJittered(TimeUnit.SECONDS.toMillis(1), TimeUnit.SECONDS.toHours(1)).limit(10),
                 Retries.NonFatalPredicate,
-                () -> config.getLedgerOffloader().deleteOffloaded(ledgerId, uuid, offloadDriverMetadata),
+                () -> config.getLedgerOffloader().deleteOffloaded(ledgerId, uuid, metadataMap),
                 scheduledExecutor, name).whenComplete((ignored, exception) -> {
                     if (exception != null) {
                         log.warn("[{}] Error cleaning up offload for {}, (cleanup reason: {})",

managed-ledger/src/test/java/org/apache/bookkeeper/mledger/impl/OffloadLedgerDeleteTest.java

@@ -20,11 +20,16 @@
 
 import static org.apache.bookkeeper.mledger.impl.OffloadPrefixTest.assertEventuallyTrue;
 
+import java.util.Map;
 import java.util.Optional;
+import java.util.Set;
+import java.util.UUID;
 import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.TimeUnit;
 import java.util.stream.Collectors;
 
+import org.apache.bookkeeper.client.api.ReadHandle;
 import org.apache.bookkeeper.mledger.LedgerOffloader;
 import org.apache.bookkeeper.mledger.ManagedCursor;
 import org.apache.bookkeeper.mledger.ManagedLedgerConfig;
@@ -43,6 +48,102 @@
 public class OffloadLedgerDeleteTest extends MockedBookKeeperTestCase {
     private static final Logger log = LoggerFactory.getLogger(OffloadLedgerDeleteTest.class);
 
+
+    static class MockFileSystemLedgerOffloader implements LedgerOffloader {
+        interface InjectAfterOffload {
+            void call();
+        }
+
+        private String storageBasePath = "/Users/pulsar_filesystem_offloader";
+
+        private static String getStoragePath(String storageBasePath, String managedLedgerName) {
+            return storageBasePath == null ? managedLedgerName + "/" : storageBasePath + "/" + managedLedgerName + "/";
+        }
+
+        private static String getDataFilePath(String storagePath, long ledgerId, UUID uuid) {
+            return storagePath + ledgerId + "-" + uuid.toString();
+        }
+
+        ConcurrentHashMap<Long, String> offloads = new ConcurrentHashMap<Long, String>();
+        ConcurrentHashMap<Long, String> deletes = new ConcurrentHashMap<Long, String>();
+        OffloadPrefixTest.MockLedgerOffloader.InjectAfterOffload inject = null;
+
+        Set<Long> offloadedLedgers() {
+            return offloads.keySet();
+        }
+
+        Set<Long> deletedOffloads() {
+            return deletes.keySet();
+        }
+
+        OffloadPoliciesImpl offloadPolicies = OffloadPoliciesImpl.create("filesystem", "", "", "",
+                null, null,
+                null, null,
+                OffloadPoliciesImpl.DEFAULT_MAX_BLOCK_SIZE_IN_BYTES,
+                OffloadPoliciesImpl.DEFAULT_READ_BUFFER_SIZE_IN_BYTES,
+                OffloadPoliciesImpl.DEFAULT_OFFLOAD_THRESHOLD_IN_BYTES,
+                OffloadPoliciesImpl.DEFAULT_OFFLOAD_DELETION_LAG_IN_MILLIS,
+                OffloadPoliciesImpl.DEFAULT_OFFLOADED_READ_PRIORITY);
+
+        @Override
+        public String getOffloadDriverName() {
+            return "mockfilesystem";
+        }
+
+        @Override
+        public CompletableFuture<Void> offload(ReadHandle ledger,
+                                               UUID uuid,
+                                               Map<String, String> extraMetadata) {
+            Assert.assertNotNull(extraMetadata.get("ManagedLedgerName"));
+            String storagePath = getStoragePath(storageBasePath, extraMetadata.get("ManagedLedgerName"));
+            String dataFilePath = getDataFilePath(storagePath, ledger.getId(), uuid);
+            CompletableFuture<Void> promise = new CompletableFuture<>();
+            if (offloads.putIfAbsent(ledger.getId(), dataFilePath) == null) {
+                promise.complete(null);
+            } else {
+                promise.completeExceptionally(new Exception("Already exists exception"));
+            }
+
+            if (inject != null) {
+                inject.call();
+            }
+            return promise;
+        }
+
+        @Override
+        public CompletableFuture<ReadHandle> readOffloaded(long ledgerId, UUID uuid,
+                                                           Map<String, String> offloadDriverMetadata) {
+            CompletableFuture<ReadHandle> promise = new CompletableFuture<>();
+            promise.completeExceptionally(new UnsupportedOperationException());
+            return promise;
+        }
+
+        @Override
+        public CompletableFuture<Void> deleteOffloaded(long ledgerId, UUID uuid,
+                                                       Map<String, String> offloadDriverMetadata) {
+            Assert.assertNotNull(offloadDriverMetadata.get("ManagedLedgerName"));
+            String storagePath = getStoragePath(storageBasePath, offloadDriverMetadata.get("ManagedLedgerName"));
+            String dataFilePath = getDataFilePath(storagePath, ledgerId, uuid);
+            CompletableFuture<Void> promise = new CompletableFuture<>();
+            if (offloads.remove(ledgerId, dataFilePath)) {
+                deletes.put(ledgerId, dataFilePath);
+                promise.complete(null);
+            } else {
+                promise.completeExceptionally(new Exception("Not found"));
+            }
+            return promise;
+        };
+
+        @Override
+        public OffloadPoliciesImpl getOffloadPolicies() {
+            return offloadPolicies;
+        }
+
+        @Override
+        public void close() {
+        }
+    }
+
     @Test
     public void testLaggedDelete() throws Exception {
         OffloadPrefixTest.MockLedgerOffloader offloader = new OffloadPrefixTest.MockLedgerOffloader();
@@ -105,6 +206,54 @@ public void testLaggedDelete() throws Exception {
         assertEventuallyTrue(() -> offloader.deletedOffloads().contains(firstLedgerId));
     }
 
+    @Test(timeOut = 5000)
+    public void testFileSystemOffloadDeletePath() throws Exception {
+        MockFileSystemLedgerOffloader offloader = new MockFileSystemLedgerOffloader();
+
+        ManagedLedgerConfig config = new ManagedLedgerConfig();
+        MockClock clock = new MockClock();
+        config.setMaxEntriesPerLedger(10);
+        config.setMinimumRolloverTime(0, TimeUnit.SECONDS);
+        config.setRetentionTime(3, TimeUnit.MINUTES);
+        config.setRetentionSizeInMB(10);
+        offloader.getOffloadPolicies().setManagedLedgerOffloadDeletionLagInMillis(300000L);
+        config.setLedgerOffloader(offloader);
+        config.setClock(clock);
+
+        ManagedLedgerImpl ledger = (ManagedLedgerImpl) factory.open("my_test_ledger_filesystem", config);
+        int i = 0;
+        for (; i < 15; i++) {
+            String content = "entry-" + i;
+            ledger.addEntry(content.getBytes());
+        }
+        Assert.assertEquals(ledger.getLedgersInfoAsList().size(), 2);
+        long firstLedgerId = ledger.getLedgersInfoAsList().get(0).getLedgerId();
+
+        ledger.offloadPrefix(ledger.getLastConfirmedEntry());
+
+        Assert.assertEquals(ledger.getLedgersInfoAsList().size(), 2);
+        Assert.assertEquals(ledger.getLedgersInfoAsList().stream()
+                        .filter(e -> e.getOffloadContext().getComplete())
+                        .map(e -> e.getLedgerId()).collect(Collectors.toSet()),
+                offloader.offloadedLedgers());
+        Assert.assertTrue(bkc.getLedgers().contains(firstLedgerId));
+
+        // ledger still exists in list
+        Assert.assertEquals(ledger.getLedgersInfoAsList().stream()
+                        .filter(e -> e.getOffloadContext().getComplete())
+                        .map(e -> e.getLedgerId()).collect(Collectors.toSet()),
+                offloader.offloadedLedgers());
+
+        // move past retention, should be deleted from offloaded also
+        clock.advance(5, TimeUnit.MINUTES);
+        CompletableFuture<Void> promise3 = new CompletableFuture<>();
+        ledger.internalTrimConsumedLedgers(promise3);
+        promise3.join();
+
+        Assert.assertEquals(ledger.getLedgersInfoAsList().size(), 1);
+        assertEventuallyTrue(() -> offloader.deletedOffloads().contains(firstLedgerId));
+    }
+
     @Test
     public void testLaggedDeleteRetentionSetLower() throws Exception {
         OffloadPrefixTest.MockLedgerOffloader offloader = new OffloadPrefixTest.MockLedgerOffloader();