Light GraphRAG (#4585)

### What problem does this PR solve?

#4543

### Type of change

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

graphrag/light/smoke.py

@@ -0,0 +1,58 @@
+#
+#  Copyright 2024 The InfiniFlow Authors. All Rights Reserved.
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+#
+
+import argparse
+import json
+from api import settings
+import networkx as nx
+
+from api.db import LLMType
+from api.db.services.document_service import DocumentService
+from api.db.services.knowledgebase_service import KnowledgebaseService
+from api.db.services.llm_service import LLMBundle
+from api.db.services.user_service import TenantService
+from graphrag.general.index import Dealer
+from graphrag.light.graph_extractor import GraphExtractor
+from rag.utils.redis_conn import RedisDistributedLock
+
+settings.init_settings()
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser()
+    parser.add_argument('-t', '--tenant_id', default=False, help="Tenant ID", action='store', required=True)
+    parser.add_argument('-d', '--doc_id', default=False, help="Document ID", action='store', required=True)
+    args = parser.parse_args()
+
+    e, doc = DocumentService.get_by_id(args.doc_id)
+    if not e:
+        raise LookupError("Document not found.")
+    kb_id = doc.kb_id
+
+    chunks = [d["content_with_weight"] for d in
+              settings.retrievaler.chunk_list(args.doc_id, args.tenant_id, [kb_id], max_count=6,
+                                              fields=["content_with_weight"])]
+    chunks = [("x", c) for c in chunks]
+
+    RedisDistributedLock.clean_lock(kb_id)
+
+    _, tenant = TenantService.get_by_id(args.tenant_id)
+    llm_bdl = LLMBundle(args.tenant_id, LLMType.CHAT, tenant.llm_id)
+    _, kb = KnowledgebaseService.get_by_id(kb_id)
+    embed_bdl = LLMBundle(args.tenant_id, LLMType.EMBEDDING, kb.embd_id)
+
+    dealer = Dealer(GraphExtractor, args.tenant_id, kb_id, llm_bdl, chunks, "English", embed_bdl=embed_bdl)
+
+    print(json.dumps(nx.node_link_data(dealer.graph), ensure_ascii=False, indent=2))