Add api/list_kb_docs function and modify api/list_chunks (#874)

### What problem does this PR solve?
#717 

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

api/apps/api_app.py

@@ -31,7 +31,7 @@ from api.db.services.file_service import FileService
 from api.db.services.knowledgebase_service import KnowledgebaseService
 from api.db.services.task_service import queue_tasks, TaskService
 from api.db.services.user_service import UserTenantService
-from api.settings import RetCode
+from api.settings import RetCode, retrievaler
 from api.utils import get_uuid, current_timestamp, datetime_format
 from api.utils.api_utils import server_error_response, get_data_error_result, get_json_result, validate_request
 from itsdangerous import URLSafeTimedSerializer
@@ -39,9 +39,6 @@ from itsdangerous import URLSafeTimedSerializer
 from api.utils.file_utils import filename_type, thumbnail
 from rag.utils.minio_conn import MINIO
 
-from rag.utils.es_conn import ELASTICSEARCH
-from rag.nlp import search
-from elasticsearch_dsl import Q
 
 def generate_confirmation_token(tenent_id):
     serializer = URLSafeTimedSerializer(tenent_id)
@@ -369,27 +366,65 @@ def list_chunks():
     try:
         if "doc_name" in form_data.keys():
             tenant_id = DocumentService.get_tenant_id_by_name(form_data['doc_name'])
-            q = Q("match", docnm_kwd=form_data['doc_name'])
+            doc_id = DocumentService.get_doc_id_by_doc_name(form_data['doc_name'])
 
         elif "doc_id" in form_data.keys():
             tenant_id = DocumentService.get_tenant_id(form_data['doc_id'])
-            q = Q("match", doc_id=form_data['doc_id'])
+            doc_id = form_data['doc_id']
         else:
             return get_json_result(
                 data=False,retmsg="Can't find doc_name or doc_id"
             )
 
-        res_es_search = ELASTICSEARCH.search(q,idxnm=search.index_name(tenant_id),timeout="600s")
+        res = retrievaler.chunk_list(doc_id=doc_id, tenant_id=tenant_id)
+        res = [
+            {
+                "content": res_item["content_with_weight"],
+                "doc_name": res_item["docnm_kwd"],
+                "img_id": res_item["img_id"]
+            } for res_item in res
+        ]
 
-        res = [{} for _ in range(len(res_es_search['hits']['hits']))]
+    except Exception as e:
+        return server_error_response(e)
+
+    return get_json_result(data=res)
+
+
+@manager.route('/list_kb_docs', methods=['POST'])
+# @login_required
+def list_kb_docs():
+    token = request.headers.get('Authorization').split()[1]
+    objs = APIToken.query(token=token)
+    if not objs:
+        return get_json_result(
+            data=False, retmsg='Token is not valid!"', retcode=RetCode.AUTHENTICATION_ERROR)
 
-        for index , chunk in enumerate(res_es_search['hits']['hits']):
-            res[index]['doc_name'] = chunk['_source']['docnm_kwd']
-            res[index]['content'] = chunk['_source']['content_with_weight']
-            if 'img_id' in chunk['_source'].keys():
-                res[index]['img_id'] = chunk['_source']['img_id']
+    tenant_id = objs[0].tenant_id
+    kb_name = request.form.get("kb_name").strip()
+
+    try:
+        e, kb = KnowledgebaseService.get_by_name(kb_name, tenant_id)
+        if not e:
+            return get_data_error_result(
+                retmsg="Can't find this knowledgebase!")
+        kb_id = kb.id
 
     except Exception as e:
         return server_error_response(e)
 
-    return get_json_result(data=res)
+    page_number = int(request.form.get("page", 1))
+    items_per_page = int(request.form.get("page_size", 15))
+    orderby = request.form.get("orderby", "create_time")
+    desc = request.form.get("desc", True)
+    keywords = request.form.get("keywords", "")
+
+    try:
+        docs, tol = DocumentService.get_by_kb_id(
+            kb_id, page_number, items_per_page, orderby, desc, keywords)
+        docs = [{"doc_id": doc['id'], "doc_name": doc['name']} for doc in docs]
+
+        return get_json_result(data={"total": tol, "docs": docs})
+    
+    except Exception as e:
+        return server_error_response(e)

api/db/services/document_service.py

@@ -179,6 +179,17 @@ class DocumentService(CommonService):
             return
         return docs[0]["tenant_id"]
 
+    @classmethod
+    @DB.connection_context()
+    def get_doc_id_by_doc_name(cls, doc_name):
+        fields = [cls.model.id]
+        doc_id = cls.model.select(*fields) \
+            .where(cls.model.name == doc_name)
+        doc_id = doc_id.dicts()
+        if not doc_id:
+            return
+        return doc_id[0]["id"]
+
     @classmethod
     @DB.connection_context()
     def get_thumbnails(cls, docids):

rag/nlp/search.py

@@ -407,3 +407,13 @@ class Dealer:
         except Exception as e:
             chat_logger.error(f"SQL failure: {sql} =>" + str(e))
             return {"error": str(e)}
+
+    def chunk_list(self, doc_id, tenant_id, max_count=1024, fields=["docnm_kwd", "content_with_weight", "img_id"]):
+        s = Search()
+        s = s.query(Q("match", doc_id=doc_id))[0:max_count]
+        s = s.to_dict()
+        es_res = self.es.search(s, idxnm=index_name(tenant_id), timeout="600s", src=fields)
+        res = []
+        for index, chunk in enumerate(es_res['hits']['hits']):
+            res.append({fld: chunk['_source'].get(fld) for fld in fields})
+        return res