Renkai commented on a change in pull request #9096:
URL: https://github.com/apache/pulsar/pull/9096#discussion_r558104341
##########
File path:
managed-ledger/src/main/java/org/apache/bookkeeper/mledger/LedgerOffloader.java
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@@ -22,19 +22,115 @@
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.CompletableFuture;
-
+import lombok.ToString;
import org.apache.bookkeeper.client.api.ReadHandle;
import org.apache.bookkeeper.common.annotation.InterfaceAudience;
import org.apache.bookkeeper.common.annotation.InterfaceStability;
+import
org.apache.bookkeeper.mledger.ManagedLedgerException.OffloadNotConsecutiveException;
+import
org.apache.bookkeeper.mledger.ManagedLedgerException.OffloadSegmentClosedException;
+import org.apache.bookkeeper.mledger.impl.EntryImpl;
+import org.apache.bookkeeper.mledger.impl.PositionImpl;
+import org.apache.bookkeeper.mledger.proto.MLDataFormats;
import org.apache.pulsar.common.policies.data.OffloadPolicies;
/**
- * Interface for offloading ledgers to long-term storage
+ * Interface for offloading ledgers to long-term storage.
*/
@InterfaceAudience.LimitedPrivate
@InterfaceStability.Evolving
public interface LedgerOffloader {
+ interface SegmentInfo {
+ boolean isClosed();
+
+ OffloadResult result();
+ }
+
+ @ToString
+ class SegmentInfoImpl implements SegmentInfo {
+ public SegmentInfoImpl(UUID uuid, long beginLedger, long beginEntry,
String driverName,
+ Map<String, String> driverMetadata) {
+ this.uuid = uuid;
+ this.beginLedger = beginLedger;
+ this.beginEntry = beginEntry;
+ this.driverName = driverName;
+ this.driverMetadata = driverMetadata;
+ }
+
+
+ public final UUID uuid;
+ public final long beginLedger;
+ public final long beginEntry;
+ public final String driverName;
+ volatile private long endLedger;
+ volatile private long endEntry;
+ volatile boolean closed = false;
+ public final Map<String, String> driverMetadata;
+
+ public boolean isClosed() {
+ return closed;
+ }
+
+ public void closeSegment(long endLedger, long endEntry) {
+ this.endLedger = endLedger;
+ this.endEntry = endEntry;
+ this.closed = true;
+ }
+
+ public OffloadResult result() {
+ return new OffloadResult(beginLedger, beginEntry, endLedger,
endEntry);
+ }
+ }
+
+
+ class OffloadResult {
+ public final long beginLedger;
+ public final long beginEntry;
+ public final long endLedger;
+ public final long endEntry;
+
+ public OffloadResult(long beginLedger, long beginEntry, long
endLedger, long endEntry) {
+ this.beginLedger = beginLedger;
+ this.beginEntry = beginEntry;
+ this.endLedger = endLedger;
+ this.endEntry = endEntry;
+ }
+ }
+
+ /**
+ * Used to store driver info, buffer entries, mark progress, etc.
+ * Create one per second.
+ */
+ interface OffloadHandle {
Review comment:
close method added
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