Support importing chat completions settings

crates/dump/src/reader/mod.rs

@@ -116,6 +116,15 @@ impl DumpReader {
         }
     }
 
+    pub fn chat_completions_settings(
+        &mut self,
+    ) -> Result<Box<dyn Iterator<Item = Result<(String, v6::ChatCompletionSettings)>> + '_>> {
+        match self {
+            DumpReader::Current(current) => current.chat_completions_settings(),
+            DumpReader::Compat(_compat) => Ok(Box::new(std::iter::empty())),
+        }
+    }
+
     pub fn features(&self) -> Result<Option<v6::RuntimeTogglableFeatures>> {
         match self {
             DumpReader::Current(current) => Ok(current.features()),

crates/dump/src/reader/v6/mod.rs

@@ -1,3 +1,4 @@
+use std::ffi::OsStr;
 use std::fs::{self, File};
 use std::io::{BufRead, BufReader, ErrorKind};
 use std::path::Path;
@@ -21,6 +22,7 @@ pub type Unchecked = meilisearch_types::settings::Unchecked;
 pub type Task = crate::TaskDump;
 pub type Batch = meilisearch_types::batches::Batch;
 pub type Key = meilisearch_types::keys::Key;
+pub type ChatCompletionSettings = meilisearch_types::features::ChatCompletionSettings;
 pub type RuntimeTogglableFeatures = meilisearch_types::features::RuntimeTogglableFeatures;
 pub type Network = meilisearch_types::features::Network;
 
@@ -192,6 +194,30 @@ impl V6Reader {
         )
     }
 
+    pub fn chat_completions_settings(
+        &mut self,
+    ) -> Result<Box<dyn Iterator<Item = Result<(String, ChatCompletionSettings)>> + '_>> {
+        let entries = fs::read_dir(self.dump.path().join("chat-completions-settings"))?;
+        Ok(Box::new(
+            entries
+                .map(|entry| -> Result<Option<_>> {
+                    let entry = entry?;
+                    let file_name = entry.file_name();
+                    let path = Path::new(&file_name);
+                    if entry.file_type()?.is_file() && path.extension() == Some(OsStr::new("json"))
+                    {
+                        let name = path.file_stem().unwrap().to_str().unwrap().to_string();
+                        let file = File::open(entry.path())?;
+                        let settings = serde_json::from_reader(file)?;
+                        Ok(Some((name, settings)))
+                    } else {
+                        Ok(None)
+                    }
+                })
+                .filter_map(|entry| entry.transpose()),
+        ))
+    }
+
     pub fn features(&self) -> Option<RuntimeTogglableFeatures> {
         self.features
     }

crates/meilisearch/src/lib.rs

@@ -498,14 +498,20 @@ fn import_dump(
         keys.push(key);
     }
 
-    // 3. Import the runtime features and network
+    // 3. Import the `ChatCompletionSettings`s.
+    for result in dump_reader.chat_completions_settings()? {
+        let (name, settings) = result?;
+        index_scheduler.put_chat_settings(&name, &settings)?;
+    }
+
+    // 4. Import the runtime features and network
     let features = dump_reader.features()?.unwrap_or_default();
     index_scheduler.put_runtime_features(features)?;
 
     let network = dump_reader.network()?.cloned().unwrap_or_default();
     index_scheduler.put_network(network)?;
 
-    // 3.1 Use all cpus to process dump if `max_indexing_threads` not configured
+    // 4.1 Use all cpus to process dump if `max_indexing_threads` not configured
     let backup_config;
     let base_config = index_scheduler.indexer_config();
 
@@ -522,7 +528,7 @@ fn import_dump(
     // /!\ The tasks must be imported AFTER importing the indexes or else the scheduler might
     // try to process tasks while we're trying to import the indexes.
 
-    // 4. Import the indexes.
+    // 5. Import the indexes.
     for index_reader in dump_reader.indexes()? {
         let mut index_reader = index_reader?;
         let metadata = index_reader.metadata();
@@ -535,20 +541,20 @@ fn import_dump(
         let mut wtxn = index.write_txn()?;
 
         let mut builder = milli::update::Settings::new(&mut wtxn, &index, indexer_config);
-        // 4.1 Import the primary key if there is one.
+        // 5.1 Import the primary key if there is one.
         if let Some(ref primary_key) = metadata.primary_key {
             builder.set_primary_key(primary_key.to_string());
         }
 
-        // 4.2 Import the settings.
+        // 5.2 Import the settings.
         tracing::info!("Importing the settings.");
         let settings = index_reader.settings()?;
         apply_settings_to_builder(&settings, &mut builder);
         let embedder_stats: Arc<EmbedderStats> = Default::default();
         builder.execute(&|| false, &progress, embedder_stats.clone())?;
 
-        // 4.3 Import the documents.
-        // 4.3.1 We need to recreate the grenad+obkv format accepted by the index.
+        // 5.3 Import the documents.
+        // 5.3.1 We need to recreate the grenad+obkv format accepted by the index.
         tracing::info!("Importing the documents.");
         let file = tempfile::tempfile()?;
         let mut builder = DocumentsBatchBuilder::new(BufWriter::new(file));
@@ -559,7 +565,7 @@ fn import_dump(
         // This flush the content of the batch builder.
         let file = builder.into_inner()?.into_inner()?;
 
-        // 4.3.2 We feed it to the milli index.
+        // 5.3.2 We feed it to the milli index.
         let reader = BufReader::new(file);
         let reader = DocumentsBatchReader::from_reader(reader)?;
 
@@ -591,15 +597,15 @@ fn import_dump(
         index_scheduler.refresh_index_stats(&uid)?;
     }
 
-    // 5. Import the queue
+    // 6. Import the queue
     let mut index_scheduler_dump = index_scheduler.register_dumped_task()?;
-    // 5.1. Import the batches
+    // 6.1. Import the batches
     for ret in dump_reader.batches()? {
         let batch = ret?;
         index_scheduler_dump.register_dumped_batch(batch)?;
     }
 
-    // 5.2. Import the tasks
+    // 6.2. Import the tasks
     for ret in dump_reader.tasks()? {
         let (task, file) = ret?;
         index_scheduler_dump.register_dumped_task(task, file)?;