fix(router): add auth token to get model info (#207)

launcher/src/main.rs

@@ -414,6 +414,14 @@ fn main() -> ExitCode {
         argv.push(origin);
     }
 
+    // Copy current process env
+    let mut env: Vec<(OsString, OsString)> = env::vars_os().collect();
+
+    // Parse Inference API token
+    if let Ok(api_token) = env::var("HF_API_TOKEN") {
+        env.push(("HUGGING_FACE_HUB_TOKEN".into(), api_token.into()))
+    };
+
     let mut webserver = match Popen::create(
         &argv,
         PopenConfig {
@@ -421,6 +429,7 @@ fn main() -> ExitCode {
             stderr: Redirection::Pipe,
             // Needed for the shutdown procedure
             setpgid: true,
+            env: Some(env),
             ..Default::default()
         },
     ) {

router/src/main.rs

@@ -90,6 +90,9 @@ fn main() -> Result<(), std::io::Error> {
         )
     });
 
+    // Parse Huggingface hub token
+    let authorization_token = std::env::var("HUGGING_FACE_HUB_TOKEN").ok();
+
     // Tokenizer instance
     // This will only be used to validate payloads
     let local_path = Path::new(&tokenizer_name);
@@ -102,6 +105,7 @@ fn main() -> Result<(), std::io::Error> {
         // We need to download it outside of the Tokio runtime
         let params = FromPretrainedParameters {
             revision: revision.clone(),
+            auth_token: authorization_token.clone(),
             ..Default::default()
         };
         Tokenizer::from_pretrained(tokenizer_name.clone(), Some(params)).ok()
@@ -129,7 +133,7 @@ fn main() -> Result<(), std::io::Error> {
                     sha: None,
                     pipeline_tag: None,
                 },
-                false => get_model_info(&tokenizer_name, &revision).await,
+                false => get_model_info(&tokenizer_name, &revision, authorization_token).await,
             };
 
             // if pipeline-tag == text-generation we default to return_full_text = true
@@ -233,14 +237,21 @@ fn init_logging(otlp_endpoint: Option<String>, json_output: bool) {
 }
 
 /// get model info from the Huggingface Hub
-pub async fn get_model_info(model_id: &str, revision: &str) -> ModelInfo {
-    let model_info = reqwest::get(format!(
+pub async fn get_model_info(model_id: &str, revision: &str, token: Option<String>) -> ModelInfo {
+    let client = reqwest::Client::new();
+    let mut builder = client.get(format!(
         "https://huggingface.co/api/models/{model_id}/revision/{revision}"
-    ))
-    .await
-    .expect("Could not connect to hf.co")
-    .text()
-    .await
-    .expect("error when retrieving model info from hf.co");
+    ));
+    if let Some(token) = token {
+        builder = builder.bearer_auth(token);
+    }
+
+    let model_info = builder
+        .send()
+        .await
+        .expect("Could not connect to hf.co")
+        .text()
+        .await
+        .expect("error when retrieving model info from hf.co");
     serde_json::from_str(&model_info).expect("unable to parse model info")
 }