feat: knowledge pipeline (#25360)

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api/services/rag_pipeline/pipeline_template/built_in/built_in_retrieval.py

@@ -0,0 +1,63 @@
+import json
+from os import path
+from pathlib import Path
+
+from flask import current_app
+
+from services.rag_pipeline.pipeline_template.pipeline_template_base import PipelineTemplateRetrievalBase
+from services.rag_pipeline.pipeline_template.pipeline_template_type import PipelineTemplateType
+
+
+class BuiltInPipelineTemplateRetrieval(PipelineTemplateRetrievalBase):
+    """
+    Retrieval pipeline template from built-in, the location  is constants/pipeline_templates.json
+    """
+
+    builtin_data: dict | None = None
+
+    def get_type(self) -> str:
+        return PipelineTemplateType.BUILTIN
+
+    def get_pipeline_templates(self, language: str) -> dict:
+        result = self.fetch_pipeline_templates_from_builtin(language)
+        return result
+
+    def get_pipeline_template_detail(self, template_id: str):
+        result = self.fetch_pipeline_template_detail_from_builtin(template_id)
+        return result
+
+    @classmethod
+    def _get_builtin_data(cls) -> dict:
+        """
+        Get builtin data.
+        :return:
+        """
+        if cls.builtin_data:
+            return cls.builtin_data
+
+        root_path = current_app.root_path
+        cls.builtin_data = json.loads(
+            Path(path.join(root_path, "constants", "pipeline_templates.json")).read_text(encoding="utf-8")
+        )
+
+        return cls.builtin_data or {}
+
+    @classmethod
+    def fetch_pipeline_templates_from_builtin(cls, language: str) -> dict:
+        """
+        Fetch pipeline templates from builtin.
+        :param language: language
+        :return:
+        """
+        builtin_data: dict[str, dict[str, dict]] = cls._get_builtin_data()
+        return builtin_data.get("pipeline_templates", {}).get(language, {})
+
+    @classmethod
+    def fetch_pipeline_template_detail_from_builtin(cls, template_id: str) -> dict | None:
+        """
+        Fetch pipeline template detail from builtin.
+        :param template_id: Template ID
+        :return:
+        """
+        builtin_data: dict[str, dict[str, dict]] = cls._get_builtin_data()
+        return builtin_data.get("pipeline_templates", {}).get(template_id)