change ToolCall id to string

router/src/lib.rs

@@ -882,7 +882,7 @@ pub(crate) struct ChatTemplateInputs<'a> {
 
 #[derive(Clone, Deserialize, Serialize, ToSchema, Default, Debug)]
 pub(crate) struct ToolCall {
-    pub id: u32,
+    pub id: String,
     pub r#type: String,
     pub function: FunctionDefinition,
 }
@@ -955,13 +955,15 @@ pub(crate) struct Message {
     pub role: String,
     #[serde(skip_serializing_if = "Option::is_none")]
     #[schema(example = "My name is David and I")]
-    #[serde(deserialize_with = "message_content_serde::deserialize")]
+    #[serde(default, deserialize_with = "message_content_serde::deserialize")]
     pub content: Option<String>,
     #[serde(default, skip_serializing_if = "Option::is_none")]
     #[schema(example = "\"David\"")]
     pub name: Option<String>,
     #[serde(default, skip_serializing_if = "Option::is_none")]
     pub tool_calls: Option<Vec<ToolCall>>,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    #[schema(example = "\"get_weather\"")]
     pub tool_call_id: Option<String>,
 }
 

router/src/server.rs

@@ -988,7 +988,6 @@ async fn chat_completions(
 ) -> Result<Response, (StatusCode, Json<ErrorResponse>)> {
     let span = tracing::Span::current();
     metrics::increment_counter!("tgi_request_count");
-
     let ChatRequest {
         logprobs,
         max_tokens,
@@ -1160,7 +1159,7 @@ async fn chat_completions(
                     )
                 })?;
             let tool_calls = vec![ToolCall {
-                id: 0,
+                id: "0".to_string(),
                 r#type: "function".to_string(),
                 function: FunctionDefinition {
                     description: None,