Add latest metadata path field

Author: rahil-c

xtable-api/src/main/java/org/apache/xtable/model/InternalTable.java

@@ -50,4 +50,6 @@ public class InternalTable {
   List<InternalPartitionField> partitioningFields;
   // latest commit(write) on the table.
   Instant latestCommitTime;
+  // Path to latest metadata
+  String latestMetdataPath;
 }

xtable-core/src/main/java/org/apache/xtable/delta/DeltaTableExtractor.java

@@ -62,6 +62,7 @@ public InternalTable table(DeltaLog deltaLog, String tableName, Long version) {
         .partitioningFields(partitionFields)
         .readSchema(schema)
         .latestCommitTime(Instant.ofEpochMilli(snapshot.timestamp()))
+        .latestMetdataPath(snapshot.deltaLog().logPath().toString())
         .build();
   }
 }

xtable-core/src/main/java/org/apache/xtable/hudi/HudiTableExtractor.java

@@ -87,6 +87,7 @@ public InternalTable table(HoodieTableMetaClient metaClient, HoodieInstant commi
         .partitioningFields(partitionFields)
         .readSchema(canonicalSchema)
         .latestCommitTime(HudiInstantUtils.parseFromInstantTime(commit.getTimestamp()))
+        .latestMetdataPath(metaClient.getMetaPath().toString())
         .build();
   }
 

xtable-core/src/main/java/org/apache/xtable/iceberg/IcebergConversionSource.java

@@ -35,12 +35,14 @@
 
 import org.apache.hadoop.conf.Configuration;
 
+import org.apache.iceberg.BaseTable;
 import org.apache.iceberg.DataFile;
 import org.apache.iceberg.FileScanTask;
 import org.apache.iceberg.PartitionSpec;
 import org.apache.iceberg.Schema;
 import org.apache.iceberg.Snapshot;
 import org.apache.iceberg.Table;
+import org.apache.iceberg.TableOperations;
 import org.apache.iceberg.TableScan;
 import org.apache.iceberg.catalog.Namespace;
 import org.apache.iceberg.catalog.TableIdentifier;
@@ -107,6 +109,7 @@ private FileIO initTableOps() {
   public InternalTable getTable(Snapshot snapshot) {
     Table iceTable = getSourceTable();
     Schema iceSchema = iceTable.schemas().get(snapshot.schemaId());
+    TableOperations iceOps = ((BaseTable) iceTable).operations();
     IcebergSchemaExtractor schemaExtractor = IcebergSchemaExtractor.getInstance();
     InternalSchema irSchema = schemaExtractor.fromIceberg(iceSchema);
 
@@ -128,6 +131,7 @@ public InternalTable getTable(Snapshot snapshot) {
         .latestCommitTime(Instant.ofEpochMilli(snapshot.timestampMillis()))
         .readSchema(irSchema)
         .layoutStrategy(dataLayoutStrategy)
+        .latestMetdataPath(iceOps.current().metadataFileLocation())
         .build();
   }