Serialization refactor: WIP

scylla-cql/benches/benchmark.rs

@@ -3,11 +3,11 @@ use std::borrow::Cow;
 use criterion::{criterion_group, criterion_main, BenchmarkId, Criterion};
 
 use scylla_cql::frame::request::SerializableRequest;
-use scylla_cql::frame::value::SerializedValues;
 use scylla_cql::frame::value::ValueList;
 use scylla_cql::frame::{request::query, Compression, SerializedRequest};
+use scylla_cql::types::serialize::row::NewSerializedValues;
 
-fn make_query<'a>(contents: &'a str, values: &'a SerializedValues) -> query::Query<'a> {
+fn make_query<'a>(contents: &'a str, values: &'a NewSerializedValues) -> query::Query<'a> {
     query::Query {
         contents: Cow::Borrowed(contents),
         parameters: query::QueryParameters {
@@ -31,7 +31,7 @@ fn serialized_request_make_bench(c: &mut Criterion) {
             &(1234, "a value", "i am storing a string", "dc0c8cd7-d954-47c1-8722-a857941c43fb").serialized().unwrap()
         ),
     ];
-    let queries = query_args.map(|(q, v)| make_query(q, v));
+    let queries = query_args.map(|(q, v)| make_query(q, todo!()));
 
     for query in queries {
         let query_size = query.to_bytes().unwrap().len();

scylla-cql/src/errors.rs

@@ -3,6 +3,7 @@
 use crate::frame::frame_errors::{FrameError, ParseError};
 use crate::frame::protocol_features::ProtocolFeatures;
 use crate::frame::value::SerializeValuesError;
+use crate::types::serialize::SerializationError;
 use crate::Consistency;
 use bytes::Bytes;
 use std::io::ErrorKind;
@@ -340,6 +341,9 @@ pub enum BadQuery {
     #[error("Serializing values failed: {0} ")]
     SerializeValuesError(#[from] SerializeValuesError),
 
+    #[error("Serializing values failed: {0} ")]
+    SerializationError(#[from] SerializationError),
+
     /// Serialized values are too long to compute partition key
     #[error("Serialized values are too long to compute partition key! Length: {0}, Max allowed length: {1}")]
     ValuesTooLongForKey(usize, usize),
@@ -443,6 +447,12 @@ impl From<SerializeValuesError> for QueryError {
     }
 }
 
+impl From<SerializationError> for QueryError {
+    fn from(serialized_err: SerializationError) -> QueryError {
+        QueryError::BadQuery(BadQuery::SerializationError(serialized_err))
+    }
+}
+
 impl From<ParseError> for QueryError {
     fn from(parse_error: ParseError) -> QueryError {
         QueryError::InvalidMessage(format!("Error parsing message: {}", parse_error))

scylla-cql/src/frame/frame_errors.rs

@@ -1,6 +1,7 @@
 use super::response;
 use crate::cql_to_rust::CqlTypeError;
 use crate::frame::value::SerializeValuesError;
+use crate::types::serialize::SerializationError;
 use thiserror::Error;
 
 #[derive(Error, Debug)]
@@ -44,5 +45,7 @@ pub enum ParseError {
     #[error(transparent)]
     SerializeValuesError(#[from] SerializeValuesError),
     #[error(transparent)]
+    SerializationError(#[from] SerializationError),
+    #[error(transparent)]
     CqlTypeError(#[from] CqlTypeError),
 }

scylla-cql/src/frame/request/mod.rs

@@ -112,9 +112,10 @@ mod tests {
                 query::{Query, QueryParameters},
                 DeserializableRequest, SerializableRequest,
             },
+            response::result::ColumnType,
             types::{self, SerialConsistency},
-            value::SerializedValues,
         },
+        types::serialize::row::NewSerializedValues,
         Consistency,
     };
 
@@ -129,8 +130,8 @@ mod tests {
             page_size: Some(323),
             paging_state: Some(vec![2, 1, 3, 7].into()),
             values: {
-                let mut vals = SerializedValues::new();
-                vals.add_value(&2137).unwrap();
+                let mut vals = NewSerializedValues::new();
+                vals.add_value(&2137, &ColumnType::Int).unwrap();
                 Cow::Owned(vals)
             },
         };
@@ -156,9 +157,9 @@ mod tests {
             page_size: None,
             paging_state: None,
             values: {
-                let mut vals = SerializedValues::new();
-                vals.add_named_value("the_answer", &42).unwrap();
-                vals.add_named_value("really?", &2137).unwrap();
+                let mut vals = NewSerializedValues::new();
+                vals.add_value(&42, &ColumnType::Int).unwrap();
+                vals.add_value(&2137, &ColumnType::Int).unwrap();
                 Cow::Owned(vals)
             },
         };
@@ -189,8 +190,18 @@ mod tests {
 
             // Not execute's values, because named values are not supported in batches.
             values: vec![
-                query.parameters.values.deref().clone(),
-                query.parameters.values.deref().clone(),
+                query
+                    .parameters
+                    .values
+                    .deref()
+                    .clone()
+                    .into_old_serialized_values(),
+                query
+                    .parameters
+                    .values
+                    .deref()
+                    .clone()
+                    .into_old_serialized_values(),
             ],
         };
         {
@@ -212,7 +223,7 @@ mod tests {
             timestamp: None,
             page_size: None,
             paging_state: None,
-            values: Cow::Owned(SerializedValues::new()),
+            values: Cow::Owned(NewSerializedValues::new()),
         };
         let query = Query {
             contents: contents.clone(),
@@ -261,7 +272,12 @@ mod tests {
             serial_consistency: None,
             timestamp: None,
 
-            values: vec![query.parameters.values.deref().clone()],
+            values: vec![query
+                .parameters
+                .values
+                .deref()
+                .clone()
+                .into_old_serialized_values()],
         };
         {
             let mut buf = Vec::new();

scylla-cql/src/frame/request/query.rs

@@ -1,12 +1,14 @@
 use std::borrow::Cow;
 
-use crate::frame::{frame_errors::ParseError, types::SerialConsistency};
+use crate::{
+    frame::{frame_errors::ParseError, types::SerialConsistency},
+    types::serialize::row::NewSerializedValues,
+};
 use bytes::{Buf, BufMut, Bytes};
 
 use crate::{
     frame::request::{RequestOpcode, SerializableRequest},
     frame::types,
-    frame::value::SerializedValues,
 };
 
 use super::DeserializableRequest;
@@ -61,7 +63,7 @@ pub struct QueryParameters<'a> {
     pub timestamp: Option<i64>,
     pub page_size: Option<i32>,
     pub paging_state: Option<Bytes>,
-    pub values: Cow<'a, SerializedValues>,
+    pub values: Cow<'a, NewSerializedValues>,
 }
 
 impl Default for QueryParameters<'_> {
@@ -72,7 +74,7 @@ impl Default for QueryParameters<'_> {
             timestamp: None,
             page_size: None,
             paging_state: None,
-            values: Cow::Borrowed(SerializedValues::EMPTY),
+            values: Cow::Owned(NewSerializedValues::new()),
         }
     }
 }
@@ -102,10 +104,6 @@ impl QueryParameters<'_> {
             flags |= FLAG_WITH_DEFAULT_TIMESTAMP;
         }
 
-        if self.values.has_names() {
-            flags |= FLAG_WITH_NAMES_FOR_VALUES;
-        }
-
         buf.put_u8(flags);
 
         if !self.values.is_empty() {
@@ -151,10 +149,16 @@ impl<'q> QueryParameters<'q> {
         let default_timestamp_flag = (flags & FLAG_WITH_DEFAULT_TIMESTAMP) != 0;
         let values_have_names_flag = (flags & FLAG_WITH_NAMES_FOR_VALUES) != 0;
 
+        if values_have_names_flag {
+            return Err(ParseError::BadIncomingData(
+                "Named values in frame are currently unsupported".to_string(),
+            ));
+        }
+
         let values = Cow::Owned(if values_flag {
-            SerializedValues::new_from_frame(buf, values_have_names_flag)?
+            NewSerializedValues::new_from_frame(buf)?
         } else {
-            SerializedValues::new()
+            NewSerializedValues::new()
         });
 
         let page_size = page_size_flag.then(|| types::read_int(buf)).transpose()?;

scylla-cql/src/types/serialize/mod.rs

@@ -1,9 +1,9 @@
-use std::{any::Any, sync::Arc};
+use std::{error::Error, sync::Arc};
 
 pub mod row;
 pub mod value;
 
-type SerializationError = Arc<dyn Any + Send + Sync>;
+pub type SerializationError = Arc<dyn Error + Send + Sync>;
 
 /// An interface that facilitates writing values for a CQL query.
 pub trait RowWriter {