FEAT: add tagging support to axolotl for DPOTrainer (#1209)

* Add AxolotlDPOTrainer

* chore: lint

---------

Co-authored-by: Wing Lian <wing.lian@gmail.com>

src/axolotl/core/trainer_builder.py

@@ -59,6 +59,22 @@ except ImportError:
 LOG = logging.getLogger("axolotl.core.trainer_builder")
 
 
+def _sanitize_kwargs_for_tagging(tag_names, kwargs=None):
+    if isinstance(tag_names, str):
+        tag_names = [tag_names]
+
+    if kwargs is not None:
+        if "tags" not in kwargs:
+            kwargs["tags"] = tag_names
+        elif "tags" in kwargs and isinstance(kwargs["tags"], list):
+            kwargs["tags"].extend(tag_names)
+        elif "tags" in kwargs and isinstance(kwargs["tags"], str):
+            tag_names.append(kwargs["tags"])
+            kwargs["tags"] = tag_names
+
+    return kwargs
+
+
 @dataclass
 class AxolotlTrainingArguments(TrainingArguments):
     """
@@ -349,30 +365,13 @@ class AxolotlTrainer(Trainer):
         #     return (loss, outputs) if return_outputs else loss
         return super().compute_loss(model, inputs, return_outputs=return_outputs)
 
-    def _sanitize_kwargs_for_tagging(self, tag_names, kwargs=None):
-        if isinstance(tag_names, str):
-            tag_names = [tag_names]
-
-        if kwargs is not None:
-            if "tags" not in kwargs:
-                kwargs["tags"] = tag_names
-            elif "tags" in kwargs and isinstance(kwargs["tags"], list):
-                kwargs["tags"].extend(tag_names)
-            elif "tags" in kwargs and isinstance(kwargs["tags"], str):
-                tag_names.append(kwargs["tags"])
-                kwargs["tags"] = tag_names
-
-        return kwargs
-
     @wraps(Trainer.push_to_hub)
     def push_to_hub(self, *args, **kwargs) -> str:
         """
         Overwrite the `push_to_hub` method in order to force-add the tags when pushing the
         model on the Hub. Please refer to `~transformers.Trainer.push_to_hub` for more details.
         """
-        kwargs = self._sanitize_kwargs_for_tagging(
+        kwargs = _sanitize_kwargs_for_tagging(tag_names=self.tag_names, kwargs=kwargs)
-            tag_names=self.tag_names, kwargs=kwargs
-        )
 
         return super().push_to_hub(*args, **kwargs)
 
@@ -471,6 +470,24 @@ class ReLoRATrainer(AxolotlTrainer):
         return self.lr_scheduler
 
 
+class AxolotlDPOTrainer(DPOTrainer):
+    """
+    Extend the base DPOTrainer for axolotl helpers
+    """
+
+    tag_names = ["axolotl", "dpo"]
+
+    @wraps(DPOTrainer.push_to_hub)
+    def push_to_hub(self, *args, **kwargs) -> str:
+        """
+        Overwrite the `push_to_hub` method in order to force-add the tags when pushing the
+        model on the Hub. Please refer to `~transformers.Trainer.push_to_hub` for more details.
+        """
+        kwargs = _sanitize_kwargs_for_tagging(tag_names=self.tag_names, kwargs=kwargs)
+
+        return super().push_to_hub(*args, **kwargs)
+
+
 class TrainerBuilderBase(abc.ABC):
     """
     Base class for trainer builder
@@ -1076,7 +1093,7 @@ class HFDPOTrainerBuilder(TrainerBuilderBase):
             dpo_trainer_kwargs[
                 "precompute_ref_log_probs"
             ] = self.cfg.precompute_ref_log_probs
-        dpo_trainer = DPOTrainer(
+        dpo_trainer = AxolotlDPOTrainer(
             self.model,
             self.model_ref,
             args=training_args,