Executing Lua works correctly

index-scheduler/src/batch.rs

@@ -1751,20 +1751,22 @@ fn delete_document_by_filter<'a>(
 
 fn edit_documents_by_function<'a>(
     wtxn: &mut RwTxn<'a>,
-    filter: &serde_json::Value,
+    filter: &Option<serde_json::Value>,
     code: &str,
     indexer_config: &IndexerConfig,
     must_stop_processing: MustStopProcessing,
     index: &'a Index,
 ) -> Result<u64> {
-    let filter = Filter::from_json(filter)?;
-    Ok(if let Some(filter) = filter {
-        let candidates = filter.evaluate(wtxn, index).map_err(|err| match err {
+    let candidates = match filter.as_ref().map(Filter::from_json) {
+        Some(Ok(Some(filter))) => filter.evaluate(wtxn, index).map_err(|err| match err {
             milli::Error::UserError(milli::UserError::InvalidFilter(_)) => {
                 Error::from(err).with_custom_error_code(Code::InvalidDocumentFilter)
             }
             e => e.into(),
-        })?;
+        })?,
+        None | Some(Ok(None)) => index.documents_ids(wtxn)?,
+        Some(Err(e)) => return Err(e.into()),
+    };
 
     let config = IndexDocumentsConfig {
         update_method: IndexDocumentsMethod::ReplaceDocuments,
@@ -1780,13 +1782,9 @@ fn edit_documents_by_function<'a>(
         || must_stop_processing.get(),
     )?;
 
-        todo!("edit documents with the code and reinsert them in the builder")
-        // let (new_builder, count) = builder.remove_documents_from_db_no_batch(&candidates)?;
-        // builder = new_builder;
+    let (new_builder, count) = builder.edit_documents(&candidates, code)?;
+    builder = new_builder;
 
-        // let _ = builder.execute()?;
-        // count
-    } else {
-        0
-    })
+    let _ = builder.execute()?;
+    Ok(count.unwrap())
 }

meilisearch-types/src/task_view.rs

@@ -93,7 +93,7 @@ impl From<Details> for DetailsView {
             Details::DocumentEdition { edited_documents, original_filter, edition_code } => {
                 DetailsView {
                     edited_documents: Some(edited_documents),
-                    original_filter: Some(Some(original_filter)),
+                    original_filter: Some(original_filter),
                     edition_code: Some(edition_code),
                     ..DetailsView::default()
                 }

meilisearch-types/src/tasks.rs

@@ -98,7 +98,7 @@ pub enum KindWithContent {
     },
     DocumentEdition {
         index_uid: String,
-        filter_expr: serde_json::Value,
+        filter_expr: Option<serde_json::Value>,
         edition_code: String,
     },
     DocumentDeletion {
@@ -214,7 +214,7 @@ impl KindWithContent {
             KindWithContent::DocumentEdition { index_uid: _, edition_code, filter_expr } => {
                 Some(Details::DocumentEdition {
                     edited_documents: None,
-                    original_filter: filter_expr.to_string(),
+                    original_filter: filter_expr.as_ref().map(|v| v.to_string()),
                     edition_code: edition_code.clone(),
                 })
             }
@@ -269,7 +269,7 @@ impl KindWithContent {
             KindWithContent::DocumentEdition { index_uid: _, filter_expr, edition_code } => {
                 Some(Details::DocumentEdition {
                     edited_documents: Some(0),
-                    original_filter: filter_expr.to_string(),
+                    original_filter: filter_expr.as_ref().map(|v| v.to_string()),
                     edition_code: edition_code.clone(),
                 })
             }
@@ -524,17 +524,48 @@ impl std::error::Error for ParseTaskKindError {}
 
 #[derive(Debug, PartialEq, Eq, Clone, Serialize, Deserialize)]
 pub enum Details {
-    DocumentAdditionOrUpdate { received_documents: u64, indexed_documents: Option<u64> },
-    DocumentEdition { edited_documents: Option<u64>, original_filter: String, edition_code: String },
-    SettingsUpdate { settings: Box<Settings<Unchecked>> },
-    IndexInfo { primary_key: Option<String> },
-    DocumentDeletion { provided_ids: usize, deleted_documents: Option<u64> },
-    DocumentDeletionByFilter { original_filter: String, deleted_documents: Option<u64> },
-    ClearAll { deleted_documents: Option<u64> },
-    TaskCancelation { matched_tasks: u64, canceled_tasks: Option<u64>, original_filter: String },
-    TaskDeletion { matched_tasks: u64, deleted_tasks: Option<u64>, original_filter: String },
-    Dump { dump_uid: Option<String> },
-    IndexSwap { swaps: Vec<IndexSwap> },
+    DocumentAdditionOrUpdate {
+        received_documents: u64,
+        indexed_documents: Option<u64>,
+    },
+    DocumentEdition {
+        edited_documents: Option<u64>,
+        original_filter: Option<String>,
+        edition_code: String,
+    },
+    SettingsUpdate {
+        settings: Box<Settings<Unchecked>>,
+    },
+    IndexInfo {
+        primary_key: Option<String>,
+    },
+    DocumentDeletion {
+        provided_ids: usize,
+        deleted_documents: Option<u64>,
+    },
+    DocumentDeletionByFilter {
+        original_filter: String,
+        deleted_documents: Option<u64>,
+    },
+    ClearAll {
+        deleted_documents: Option<u64>,
+    },
+    TaskCancelation {
+        matched_tasks: u64,
+        canceled_tasks: Option<u64>,
+        original_filter: String,
+    },
+    TaskDeletion {
+        matched_tasks: u64,
+        deleted_tasks: Option<u64>,
+        original_filter: String,
+    },
+    Dump {
+        dump_uid: Option<String>,
+    },
+    IndexSwap {
+        swaps: Vec<IndexSwap>,
+    },
 }
 
 impl Details {

meilisearch/src/routes/indexes/documents.rs

@@ -579,7 +579,7 @@ pub async fn delete_documents_by_filter(
 #[deserr(error = DeserrJsonError, rename_all = camelCase, deny_unknown_fields)]
 pub struct DocumentEditionByFunction {
     #[deserr(error = DeserrJsonError<InvalidDocumentFilter>, missing_field_error = DeserrJsonError::missing_document_filter)]
-    filter: Value,
+    filter: Option<Value>,
     #[deserr(error = DeserrJsonError<InvalidDocumentFilter>, missing_field_error = DeserrJsonError::missing_document_filter)]
     function: String,
 }
@@ -599,12 +599,14 @@ pub async fn edit_documents_by_function(
 
     // analytics.delete_documents(DocumentDeletionKind::PerFilter, &req);
 
+    if let Some(ref filter) = filter {
         // we ensure the filter is well formed before enqueuing it
         || -> Result<_, ResponseError> {
-        Ok(crate::search::parse_filter(&filter)?.ok_or(MeilisearchHttpError::EmptyFilter)?)
+            Ok(crate::search::parse_filter(filter)?.ok_or(MeilisearchHttpError::EmptyFilter)?)
         }()
         // and whatever was the error, the error code should always be an InvalidDocumentFilter
         .map_err(|err| ResponseError::from_msg(err.message, Code::InvalidDocumentFilter))?;
+    }
     let task =
         KindWithContent::DocumentEdition { index_uid, filter_expr: filter, edition_code: function };
 

milli/Cargo.toml

@@ -83,6 +83,7 @@ rand = "0.8.5"
 tracing = "0.1.40"
 ureq = { version = "2.10.0", features = ["json"] }
 url = "2.5.2"
+piccolo = "0.3.1"
 
 [dev-dependencies]
 mimalloc = { version = "0.1.43", default-features = false }

milli/src/update/index_documents/mod.rs

@@ -40,7 +40,7 @@ use crate::update::{
     IndexerConfig, UpdateIndexingStep, WordPrefixDocids, WordPrefixIntegerDocids, WordsPrefixesFst,
 };
 use crate::vector::EmbeddingConfigs;
-use crate::{CboRoaringBitmapCodec, Index, Result};
+use crate::{fields_ids_map, CboRoaringBitmapCodec, Index, Result};
 
 static MERGED_DATABASE_COUNT: usize = 7;
 static PREFIX_DATABASE_COUNT: usize = 4;
@@ -172,6 +172,62 @@ where
         Ok((self, Ok(indexed_documents)))
     }
 
+    #[tracing::instrument(level = "trace", skip_all, target = "indexing::documents")]
+    pub fn edit_documents(
+        mut self,
+        documents: &RoaringBitmap,
+        code: &str,
+    ) -> Result<(Self, StdResult<u64, UserError>)> {
+        // Early return when there is no document to add
+        if documents.is_empty() {
+            return Ok((self, Ok(0)));
+        }
+
+        let mut lua = piccolo::Lua::core();
+        let executor = lua.enter(|ctx| ctx.stash(piccolo::Executor::new(ctx)));
+        let fields_ids_map = self.index.fields_ids_map(self.wtxn)?;
+
+        for docid in documents {
+            let document = match self.index.documents.get(self.wtxn, &docid)? {
+                Some(document) => document,
+                None => panic!("a document should always exists"),
+            };
+
+            lua.try_enter(|ctx| {
+                let closure = match piccolo::Closure::load(
+                    ctx,
+                    None,
+                    ("return ".to_string() + code).as_bytes(),
+                ) {
+                    Ok(closure) => closure,
+                    Err(_) => piccolo::Closure::load(ctx, None, code.as_bytes())?,
+                };
+                let function = piccolo::Function::Closure(closure);
+
+                let table = piccolo::Table::new(&ctx);
+                table.set(ctx, "internal-id", docid)?;
+                table.set(ctx, "title", "hello")?;
+                table.set(ctx, "description", "world")?;
+                dbg!(&table);
+                ctx.set_global("doc", table)?;
+
+                ctx.fetch(&executor).restart(ctx, function, ());
+                Ok(())
+            })
+            .unwrap();
+
+            lua.execute::<()>(&executor).unwrap();
+            lua.try_enter(|ctx| {
+                let value = ctx.get_global("doc");
+                dbg!(value);
+                Ok(())
+            })
+            .unwrap();
+        }
+
+        Ok((self, Ok(documents.len())))
+    }
+
     pub fn with_embedders(mut self, embedders: EmbeddingConfigs) -> Self {
         self.embedders = embedders;
         self