Adding base_writes proto field

Firestore/Protos/cpp/firestore/local/mutation.pb.cc

@@ -112,6 +112,7 @@ const ::google::protobuf::uint32 TableStruct::offsets[] GOOGLE_PROTOBUF_ATTRIBUT
   GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(::firestore::client::WriteBatch, batch_id_),
   GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(::firestore::client::WriteBatch, writes_),
   GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(::firestore::client::WriteBatch, local_write_time_),
+  GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(::firestore::client::WriteBatch, base_writes_),
 };
 static const ::google::protobuf::internal::MigrationSchema schemas[] GOOGLE_PROTOBUF_ATTRIBUTE_SECTION_VARIABLE(protodesc_cold) = {
   { 0, -1, sizeof(::firestore::client::MutationQueue)},
@@ -150,14 +151,16 @@ void AddDescriptorsImpl() {
       "te.proto\032\037google/protobuf/timestamp.prot"
       "o\"N\n\rMutationQueue\022\"\n\032last_acknowledged_"
       "batch_id\030\001 \001(\005\022\031\n\021last_stream_token\030\002 \001("
-      "\014\"\205\001\n\nWriteBatch\022\020\n\010batch_id\030\001 \001(\005\022/\n\006wr"
+      "\014\"\273\001\n\nWriteBatch\022\020\n\010batch_id\030\001 \001(\005\022/\n\006wr"
       "ites\030\002 \003(\0132\037.google.firestore.v1beta1.Wr"
       "ite\0224\n\020local_write_time\030\003 \001(\0132\032.google.p"
-      "rotobuf.TimestampB/\n#com.google.firebase"
-      ".firestore.protoP\001\242\002\005FSTPBb\006proto3"
+      "rotobuf.Timestamp\0224\n\013base_writes\030\004 \003(\0132\037"
+      ".google.firestore.v1beta1.WriteB/\n#com.g"
+      "oogle.firebase.firestore.protoP\001\242\002\005FSTPB"
+      "b\006proto3"
   };
   ::google::protobuf::DescriptorPool::InternalAddGeneratedFile(
-      descriptor, 394);
+      descriptor, 448);
   ::google::protobuf::MessageFactory::InternalRegisterGeneratedFile(
     "firestore/local/mutation.proto", &protobuf_RegisterTypes);
   ::protobuf_google_2ffirestore_2fv1beta1_2fwrite_2eproto::AddDescriptors();
@@ -476,10 +479,14 @@ void WriteBatch::clear_local_write_time() {
   }
   local_write_time_ = NULL;
 }
+void WriteBatch::clear_base_writes() {
+  base_writes_.Clear();
+}
 #if !defined(_MSC_VER) || _MSC_VER >= 1900
 const int WriteBatch::kBatchIdFieldNumber;
 const int WriteBatch::kWritesFieldNumber;
 const int WriteBatch::kLocalWriteTimeFieldNumber;
+const int WriteBatch::kBaseWritesFieldNumber;
 #endif  // !defined(_MSC_VER) || _MSC_VER >= 1900
 
 WriteBatch::WriteBatch()
@@ -494,6 +501,7 @@ WriteBatch::WriteBatch(const WriteBatch& from)
   : ::google::protobuf::Message(),
       _internal_metadata_(NULL),
       writes_(from.writes_),
+      base_writes_(from.base_writes_),
       _cached_size_(0) {
   _internal_metadata_.MergeFrom(from._internal_metadata_);
   if (from.has_local_write_time()) {
@@ -551,6 +559,7 @@ void WriteBatch::Clear() {
   (void) cached_has_bits;
 
   writes_.Clear();
+  base_writes_.Clear();
   if (GetArenaNoVirtual() == NULL && local_write_time_ != NULL) {
     delete local_write_time_;
   }
@@ -606,6 +615,17 @@ bool WriteBatch::MergePartialFromCodedStream(
         break;
       }
 
+      // repeated .google.firestore.v1beta1.Write base_writes = 4;
+      case 4: {
+        if (static_cast< ::google::protobuf::uint8>(tag) ==
+            static_cast< ::google::protobuf::uint8>(34u /* 34 & 0xFF */)) {
+          DO_(::google::protobuf::internal::WireFormatLite::ReadMessage(input, add_base_writes()));
+        } else {
+          goto handle_unusual;
+        }
+        break;
+      }
+
       default: {
       handle_unusual:
         if (tag == 0) {
@@ -650,6 +670,13 @@ void WriteBatch::SerializeWithCachedSizes(
       3, *this->local_write_time_, output);
   }
 
+  // repeated .google.firestore.v1beta1.Write base_writes = 4;
+  for (unsigned int i = 0,
+      n = static_cast<unsigned int>(this->base_writes_size()); i < n; i++) {
+    ::google::protobuf::internal::WireFormatLite::WriteMessageMaybeToArray(
+      4, this->base_writes(static_cast<int>(i)), output);
+  }
+
   if ((_internal_metadata_.have_unknown_fields() &&  ::google::protobuf::internal::GetProto3PreserveUnknownsDefault())) {
     ::google::protobuf::internal::WireFormat::SerializeUnknownFields(
         (::google::protobuf::internal::GetProto3PreserveUnknownsDefault()   ? _internal_metadata_.unknown_fields()   : _internal_metadata_.default_instance()), output);
@@ -684,6 +711,14 @@ ::google::protobuf::uint8* WriteBatch::InternalSerializeWithCachedSizesToArray(
         3, *this->local_write_time_, deterministic, target);
   }
 
+  // repeated .google.firestore.v1beta1.Write base_writes = 4;
+  for (unsigned int i = 0,
+      n = static_cast<unsigned int>(this->base_writes_size()); i < n; i++) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      InternalWriteMessageToArray(
+        4, this->base_writes(static_cast<int>(i)), deterministic, target);
+  }
+
   if ((_internal_metadata_.have_unknown_fields() &&  ::google::protobuf::internal::GetProto3PreserveUnknownsDefault())) {
     target = ::google::protobuf::internal::WireFormat::SerializeUnknownFieldsToArray(
         (::google::protobuf::internal::GetProto3PreserveUnknownsDefault()   ? _internal_metadata_.unknown_fields()   : _internal_metadata_.default_instance()), target);
@@ -712,6 +747,17 @@ size_t WriteBatch::ByteSizeLong() const {
     }
   }
 
+  // repeated .google.firestore.v1beta1.Write base_writes = 4;
+  {
+    unsigned int count = static_cast<unsigned int>(this->base_writes_size());
+    total_size += 1UL * count;
+    for (unsigned int i = 0; i < count; i++) {
+      total_size +=
+        ::google::protobuf::internal::WireFormatLite::MessageSize(
+          this->base_writes(static_cast<int>(i)));
+    }
+  }
+
   // .google.protobuf.Timestamp local_write_time = 3;
   if (this->has_local_write_time()) {
     total_size += 1 +
@@ -756,6 +802,7 @@ void WriteBatch::MergeFrom(const WriteBatch& from) {
   (void) cached_has_bits;
 
   writes_.MergeFrom(from.writes_);
+  base_writes_.MergeFrom(from.base_writes_);
   if (from.has_local_write_time()) {
     mutable_local_write_time()->::google::protobuf::Timestamp::MergeFrom(from.local_write_time());
   }
@@ -789,6 +836,7 @@ void WriteBatch::Swap(WriteBatch* other) {
 void WriteBatch::InternalSwap(WriteBatch* other) {
   using std::swap;
   writes_.InternalSwap(&other->writes_);
+  base_writes_.InternalSwap(&other->base_writes_);
   swap(local_write_time_, other->local_write_time_);
   swap(batch_id_, other->batch_id_);
   _internal_metadata_.Swap(&other->_internal_metadata_);

Firestore/Protos/cpp/firestore/local/mutation.pb.h

@@ -292,6 +292,18 @@ class WriteBatch : public ::google::protobuf::Message /* @@protoc_insertion_poin
   const ::google::protobuf::RepeatedPtrField< ::google::firestore::v1beta1::Write >&
       writes() const;
 
+  // repeated .google.firestore.v1beta1.Write base_writes = 4;
+  int base_writes_size() const;
+  void clear_base_writes();
+  static const int kBaseWritesFieldNumber = 4;
+  const ::google::firestore::v1beta1::Write& base_writes(int index) const;
+  ::google::firestore::v1beta1::Write* mutable_base_writes(int index);
+  ::google::firestore::v1beta1::Write* add_base_writes();
+  ::google::protobuf::RepeatedPtrField< ::google::firestore::v1beta1::Write >*
+      mutable_base_writes();
+  const ::google::protobuf::RepeatedPtrField< ::google::firestore::v1beta1::Write >&
+      base_writes() const;
+
   // .google.protobuf.Timestamp local_write_time = 3;
   bool has_local_write_time() const;
   void clear_local_write_time();
@@ -312,6 +324,7 @@ class WriteBatch : public ::google::protobuf::Message /* @@protoc_insertion_poin
 
   ::google::protobuf::internal::InternalMetadataWithArena _internal_metadata_;
   ::google::protobuf::RepeatedPtrField< ::google::firestore::v1beta1::Write > writes_;
+  ::google::protobuf::RepeatedPtrField< ::google::firestore::v1beta1::Write > base_writes_;
   ::google::protobuf::Timestamp* local_write_time_;
   ::google::protobuf::int32 batch_id_;
   mutable int _cached_size_;
@@ -486,6 +499,33 @@ inline void WriteBatch::set_allocated_local_write_time(::google::protobuf::Times
   // @@protoc_insertion_point(field_set_allocated:firestore.client.WriteBatch.local_write_time)
 }
 
+// repeated .google.firestore.v1beta1.Write base_writes = 4;
+inline int WriteBatch::base_writes_size() const {
+  return base_writes_.size();
+}
+inline const ::google::firestore::v1beta1::Write& WriteBatch::base_writes(int index) const {
+  // @@protoc_insertion_point(field_get:firestore.client.WriteBatch.base_writes)
+  return base_writes_.Get(index);
+}
+inline ::google::firestore::v1beta1::Write* WriteBatch::mutable_base_writes(int index) {
+  // @@protoc_insertion_point(field_mutable:firestore.client.WriteBatch.base_writes)
+  return base_writes_.Mutable(index);
+}
+inline ::google::firestore::v1beta1::Write* WriteBatch::add_base_writes() {
+  // @@protoc_insertion_point(field_add:firestore.client.WriteBatch.base_writes)
+  return base_writes_.Add();
+}
+inline ::google::protobuf::RepeatedPtrField< ::google::firestore::v1beta1::Write >*
+WriteBatch::mutable_base_writes() {
+  // @@protoc_insertion_point(field_mutable_list:firestore.client.WriteBatch.base_writes)
+  return &base_writes_;
+}
+inline const ::google::protobuf::RepeatedPtrField< ::google::firestore::v1beta1::Write >&
+WriteBatch::base_writes() const {
+  // @@protoc_insertion_point(field_list:firestore.client.WriteBatch.base_writes)
+  return base_writes_;
+}
+
 #ifdef __GNUC__
   #pragma GCC diagnostic pop
 #endif  // __GNUC__

Firestore/Protos/nanopb/firestore/local/mutation.nanopb.cc

@@ -35,10 +35,11 @@ const pb_field_t firestore_client_MutationQueue_fields[3] = {
     PB_LAST_FIELD
 };
 
-const pb_field_t firestore_client_WriteBatch_fields[4] = {
+const pb_field_t firestore_client_WriteBatch_fields[5] = {
     PB_FIELD(  1, INT32   , SINGULAR, STATIC  , FIRST, firestore_client_WriteBatch, batch_id, batch_id, 0),
     PB_FIELD(  2, MESSAGE , REPEATED, POINTER , OTHER, firestore_client_WriteBatch, writes, batch_id, &google_firestore_v1beta1_Write_fields),
     PB_FIELD(  3, MESSAGE , SINGULAR, STATIC  , OTHER, firestore_client_WriteBatch, local_write_time, writes, &google_protobuf_Timestamp_fields),
+    PB_FIELD(  4, MESSAGE , REPEATED, POINTER , OTHER, firestore_client_WriteBatch, base_writes, local_write_time, &google_firestore_v1beta1_Write_fields),
     PB_LAST_FIELD
 };
 

Firestore/Protos/nanopb/firestore/local/mutation.nanopb.h

@@ -46,27 +46,30 @@ typedef struct _firestore_client_WriteBatch {
     pb_size_t writes_count;
     struct _google_firestore_v1beta1_Write *writes;
     google_protobuf_Timestamp local_write_time;
+    pb_size_t base_writes_count;
+    struct _google_firestore_v1beta1_Write *base_writes;
 /* @@protoc_insertion_point(struct:firestore_client_WriteBatch) */
 } firestore_client_WriteBatch;
 
 /* Default values for struct fields */
 
 /* Initializer values for message structs */
 #define firestore_client_MutationQueue_init_default {0, NULL}
-#define firestore_client_WriteBatch_init_default {0, 0, NULL, google_protobuf_Timestamp_init_default}
+#define firestore_client_WriteBatch_init_default {0, 0, NULL, google_protobuf_Timestamp_init_default, 0, NULL}
 #define firestore_client_MutationQueue_init_zero {0, NULL}
-#define firestore_client_WriteBatch_init_zero    {0, 0, NULL, google_protobuf_Timestamp_init_zero}
+#define firestore_client_WriteBatch_init_zero    {0, 0, NULL, google_protobuf_Timestamp_init_zero, 0, NULL}
 
 /* Field tags (for use in manual encoding/decoding) */
 #define firestore_client_MutationQueue_last_acknowledged_batch_id_tag 1
 #define firestore_client_MutationQueue_last_stream_token_tag 2
 #define firestore_client_WriteBatch_batch_id_tag 1
 #define firestore_client_WriteBatch_writes_tag   2
 #define firestore_client_WriteBatch_local_write_time_tag 3
+#define firestore_client_WriteBatch_base_writes_tag 4
 
 /* Struct field encoding specification for nanopb */
 extern const pb_field_t firestore_client_MutationQueue_fields[3];
-extern const pb_field_t firestore_client_WriteBatch_fields[4];
+extern const pb_field_t firestore_client_WriteBatch_fields[5];
 
 /* Maximum encoded size of messages (where known) */
 /* firestore_client_MutationQueue_size depends on runtime parameters */

Firestore/Protos/objc/firestore/local/Mutation.pbobjc.h

@@ -102,6 +102,7 @@ typedef GPB_ENUM(FSTPBWriteBatch_FieldNumber) {
   FSTPBWriteBatch_FieldNumber_BatchId = 1,
   FSTPBWriteBatch_FieldNumber_WritesArray = 2,
   FSTPBWriteBatch_FieldNumber_LocalWriteTime = 3,
+  FSTPBWriteBatch_FieldNumber_BaseWritesArray = 4,
 };
 
 /**
@@ -127,6 +128,22 @@ typedef GPB_ENUM(FSTPBWriteBatch_FieldNumber) {
 /** Test to see if @c localWriteTime has been set. */
 @property(nonatomic, readwrite) BOOL hasLocalWriteTime;
 
+/**
+ * A list of pseudo-writes that represent a partial base state from when this
+ * write batch was initially created. When computing the local view batch,
+ * these base_writes are applied prior to the real writes in order to
+ * override certain document fields from the remote document cache. This is
+ * necessary in the case of non-idempotent writes (e.g. numericAdd
+ * transforms) to make sure that the local view of the modified documents
+ * doesn't flicker if the remote document cache receives the result of the
+ * non-idempotent write before the write is removed from the queue.
+ *
+ * These writes are never sent to the backend.
+ **/
+@property(nonatomic, readwrite, strong, null_resettable) NSMutableArray<GCFSWrite*> *baseWritesArray;
+/** The number of items in @c baseWritesArray without causing the array to be created. */
+@property(nonatomic, readonly) NSUInteger baseWritesArray_Count;
+
 @end
 
 NS_ASSUME_NONNULL_END

Firestore/Protos/objc/firestore/local/Mutation.pbobjc.m

@@ -126,12 +126,14 @@ @implementation FSTPBWriteBatch
 @dynamic batchId;
 @dynamic writesArray, writesArray_Count;
 @dynamic hasLocalWriteTime, localWriteTime;
+@dynamic baseWritesArray, baseWritesArray_Count;
 
 typedef struct FSTPBWriteBatch__storage_ {
   uint32_t _has_storage_[1];
   int32_t batchId;
   NSMutableArray *writesArray;
   GPBTimestamp *localWriteTime;
+  NSMutableArray *baseWritesArray;
 } FSTPBWriteBatch__storage_;
 
 // This method is threadsafe because it is initially called
@@ -167,6 +169,15 @@ + (GPBDescriptor *)descriptor {
         .flags = GPBFieldOptional,
         .dataType = GPBDataTypeMessage,
       },
+      {
+        .name = "baseWritesArray",
+        .dataTypeSpecific.className = GPBStringifySymbol(GCFSWrite),
+        .number = FSTPBWriteBatch_FieldNumber_BaseWritesArray,
+        .hasIndex = GPBNoHasBit,
+        .offset = (uint32_t)offsetof(FSTPBWriteBatch__storage_, baseWritesArray),
+        .flags = GPBFieldRepeated,
+        .dataType = GPBDataTypeMessage,
+      },
     };
     GPBDescriptor *localDescriptor =
         [GPBDescriptor allocDescriptorForClass:[FSTPBWriteBatch class]

Firestore/Protos/protos/firestore/local/mutation.proto

@@ -55,4 +55,16 @@ message WriteBatch {
 
   // The local time at which the write batch was initiated.
   google.protobuf.Timestamp local_write_time = 3;
+
+  // A list of pseudo-writes that represent a partial base state from when this
+  // write batch was initially created. When computing the local view batch,
+  // these base_writes are applied prior to the real writes in order to
+  // override certain document fields from the remote document cache. This is
+  // necessary in the case of non-idempotent writes (e.g. numericAdd
+  // transforms) to make sure that the local view of the modified documents
+  // doesn't flicker if the remote document cache receives the result of the
+  // non-idempotent write before the write is removed from the queue.
+  //
+  // These writes are never sent to the backend.
+  repeated google.firestore.v1beta1.Write base_writes = 4;
 }