feat: Implemented graph-based RAG

src/graph/types.rs

@@ -352,6 +352,15 @@ pub struct RagNode {
     #[serde(default, skip_serializing_if = "Option::is_none")]
     pub batch_size: Option<usize>,
 
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub extractor_model: Option<String>,
+
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub extractor_prompt: Option<String>,
+
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub graph_hops: Option<usize>,
+
     #[serde(default, skip_serializing_if = "Option::is_none")]
     pub state_updates: Option<HashMap<String, String>>,
 

src/graph/validator.rs

@@ -1027,6 +1027,9 @@ mod tests {
                 chunk_overlap: None,
                 reranker_model: None,
                 batch_size: None,
+                extractor_model: None,
+                extractor_prompt: None,
+                graph_hops: None,
                 state_updates,
                 timeout: None,
             }),