Make FragmentedTextSegment's primitives optional (#26443)

GitOrigin-RevId: 3b4edfd63af4faee99d69fdb001eb46138dafa87

Author: sjudd

crates/common/src/bootstrap_model/index/text_index/index_snapshot.rs

@@ -53,10 +53,10 @@ impl From<FragmentedTextSegment> for pb::searchlight::FragmentedTextSegment {
             id_tracker: storage_key_from_object_key(value.id_tracker_key),
             deleted_terms_table: storage_key_from_object_key(value.deleted_terms_table_key),
             alive_bitset: storage_key_from_object_key(value.alive_bitset_key),
-            num_indexed_documents: value.num_indexed_documents,
-            num_deleted_documents: value.num_deleted_documents,
-            size_bytes_total: value.size_bytes_total,
-            id: value.id,
+            num_indexed_documents: Some(value.num_indexed_documents),
+            num_deleted_documents: Some(value.num_deleted_documents),
+            size_bytes_total: Some(value.size_bytes_total),
+            id: Some(value.id),
         }
     }
 }
@@ -86,10 +86,10 @@ impl TryFrom<pb::searchlight::FragmentedTextSegment> for FragmentedTextSegment {
                 .context("Missing alive bitset")?
                 .storage_key
                 .try_into()?,
-            num_indexed_documents: value.num_indexed_documents,
-            num_deleted_documents: value.num_deleted_documents,
-            size_bytes_total: value.size_bytes_total,
-            id: value.id,
+            num_indexed_documents: value.num_indexed_documents.context("Missing num indexed")?,
+            num_deleted_documents: value.num_deleted_documents.context("Missing num deleted")?,
+            size_bytes_total: value.size_bytes_total.context("Missing size bytes total")?,
+            id: value.id.context("Missing id")?,
         })
     }
 }

crates/pb/protos/searchlight.proto

@@ -127,14 +127,14 @@ message TextCompactionRequest {
 }
 
 message FragmentedTextSegment {
-  StorageKey segment = 1;
-  StorageKey id_tracker = 2;
-  StorageKey deleted_terms_table = 3;
-  StorageKey alive_bitset = 4;
-  uint64 num_indexed_documents = 5;
-  uint64 num_deleted_documents = 6;
-  uint64 size_bytes_total = 7;
-  string id = 8;
+  optional StorageKey segment = 1;
+  optional StorageKey id_tracker = 2;
+  optional StorageKey deleted_terms_table = 3;
+  optional StorageKey alive_bitset = 4;
+  optional uint64 num_indexed_documents = 5;
+  optional uint64 num_deleted_documents = 6;
+  optional uint64 size_bytes_total = 7;
+  optional string id = 8;
 }
 
 message TextCompactionResponse {