Make the changes to plug the new DocumentsBatch system

meilisearch-lib/src/document_formats.rs

@@ -1,10 +1,10 @@
 use std::borrow::Borrow;
 use std::fmt::{self, Debug, Display};
-use std::io::{self, BufRead, BufReader, BufWriter, Cursor, Read, Seek, Write};
+use std::io::{self, BufReader, Read, Seek, Write};
 
 use meilisearch_types::error::{Code, ErrorCode};
 use meilisearch_types::internal_error;
-use milli::documents::DocumentBatchBuilder;
+use milli::documents::{DocumentsBatchBuilder, Error};
 
 type Result<T> = std::result::Result<T, DocumentFormatError>;
 
@@ -18,9 +18,9 @@ pub enum PayloadType {
 impl fmt::Display for PayloadType {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         match self {
-            PayloadType::Ndjson => write!(f, "ndjson"),
-            PayloadType::Json => write!(f, "json"),
-            PayloadType::Csv => write!(f, "csv"),
+            PayloadType::Ndjson => f.write_str("ndjson"),
+            PayloadType::Json => f.write_str("json"),
+            PayloadType::Csv => f.write_str("csv"),
         }
     }
 }
@@ -28,7 +28,7 @@ impl fmt::Display for PayloadType {
 #[derive(Debug)]
 pub enum DocumentFormatError {
     Internal(Box<dyn std::error::Error + Send + Sync + 'static>),
-    MalformedPayload(Box<milli::documents::Error>, PayloadType),
+    MalformedPayload(Error, PayloadType),
 }
 
 impl Display for DocumentFormatError {
@@ -36,7 +36,7 @@ impl Display for DocumentFormatError {
         match self {
             Self::Internal(e) => write!(f, "An internal error has occurred: `{}`.", e),
             Self::MalformedPayload(me, b) => match me.borrow() {
-                milli::documents::Error::JsonError(se) => {
+                Error::Json(se) => {
                     // https://github.com/meilisearch/meilisearch/issues/2107
                     // The user input maybe insanely long. We need to truncate it.
                     let mut serde_msg = se.to_string();
@@ -59,11 +59,11 @@ impl Display for DocumentFormatError {
 
 impl std::error::Error for DocumentFormatError {}
 
-impl From<(PayloadType, milli::documents::Error)> for DocumentFormatError {
-    fn from((ty, error): (PayloadType, milli::documents::Error)) -> Self {
+impl From<(PayloadType, Error)> for DocumentFormatError {
+    fn from((ty, error): (PayloadType, Error)) -> Self {
         match error {
-            milli::documents::Error::Io(e) => Self::Internal(Box::new(e)),
-            e => Self::MalformedPayload(Box::new(e), ty),
+            Error::Io(e) => Self::Internal(Box::new(e)),
+            e => Self::MalformedPayload(e, ty),
         }
     }
 }
@@ -79,51 +79,67 @@ impl ErrorCode for DocumentFormatError {
 
 internal_error!(DocumentFormatError: io::Error);
 
-/// reads csv from input and write an obkv batch to writer.
+/// Reads CSV from input and write an obkv batch to writer.
 pub fn read_csv(input: impl Read, writer: impl Write + Seek) -> Result<usize> {
-    let writer = BufWriter::new(writer);
-    let builder =
-        DocumentBatchBuilder::from_csv(input, writer).map_err(|e| (PayloadType::Csv, e))?;
+    let mut builder = DocumentsBatchBuilder::new(writer);
 
-    let count = builder.finish().map_err(|e| (PayloadType::Csv, e))?;
+    let csv = csv::Reader::from_reader(input);
+    builder.append_csv(csv).map_err(|e| (PayloadType::Csv, e))?;
 
-    Ok(count)
+    let count = builder.documents_count();
+    let _ = builder
+        .into_inner()
+        .map_err(Into::into)
+        .map_err(DocumentFormatError::Internal)?;
+
+    Ok(count as usize)
 }
 
-/// reads jsonl from input and write an obkv batch to writer.
+/// Reads JSON Lines from input and write an obkv batch to writer.
 pub fn read_ndjson(input: impl Read, writer: impl Write + Seek) -> Result<usize> {
+    let mut builder = DocumentsBatchBuilder::new(writer);
     let mut reader = BufReader::new(input);
-    let writer = BufWriter::new(writer);
 
-    let mut builder = DocumentBatchBuilder::new(writer).map_err(|e| (PayloadType::Ndjson, e))?;
-    let mut buf = String::new();
-
-    while reader.read_line(&mut buf)? > 0 {
-        // skip empty lines
-        if buf == "\n" {
-            buf.clear();
-            continue;
-        }
-        builder
-            .extend_from_json(Cursor::new(&buf.as_bytes()))
+    for result in serde_json::Deserializer::from_reader(reader).into_iter() {
+        let object = result
+            .map_err(Error::Json)
             .map_err(|e| (PayloadType::Ndjson, e))?;
-        buf.clear();
+        builder
+            .append_json_object(&object)
+            .map_err(Into::into)
+            .map_err(DocumentFormatError::Internal)?;
     }
 
-    let count = builder.finish().map_err(|e| (PayloadType::Ndjson, e))?;
+    let count = builder.documents_count();
+    let _ = builder
+        .into_inner()
+        .map_err(Into::into)
+        .map_err(DocumentFormatError::Internal)?;
 
-    Ok(count)
+    Ok(count as usize)
 }
 
-/// reads json from input and write an obkv batch to writer.
+/// Reads JSON from input and write an obkv batch to writer.
 pub fn read_json(input: impl Read, writer: impl Write + Seek) -> Result<usize> {
-    let writer = BufWriter::new(writer);
-    let mut builder = DocumentBatchBuilder::new(writer).map_err(|e| (PayloadType::Json, e))?;
-    builder
-        .extend_from_json(input)
+    let mut builder = DocumentsBatchBuilder::new(writer);
+    let mut reader = BufReader::new(input);
+
+    let objects: Vec<_> = serde_json::from_reader(reader)
+        .map_err(Error::Json)
         .map_err(|e| (PayloadType::Json, e))?;
 
-    let count = builder.finish().map_err(|e| (PayloadType::Json, e))?;
+    for object in objects {
+        builder
+            .append_json_object(&object)
+            .map_err(Into::into)
+            .map_err(DocumentFormatError::Internal)?;
+    }
 
-    Ok(count)
+    let count = builder.documents_count();
+    let _ = builder
+        .into_inner()
+        .map_err(Into::into)
+        .map_err(DocumentFormatError::Internal)?;
+
+    Ok(count as usize)
 }