add Log.h in knowhere

Former-commit-id: dbe489f57077b7fc683a71dc99af86c6d7feebf0

cpp/src/core/knowhere/knowhere/common/Log.h

+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you 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.
+
+
+#pragma once
+
+#include "utils/easylogging++.h"
+
+namespace zilliz {
+namespace knowhere {
+#define KNOWHERE_DOMAIN_NAME "[KNOWHERE] "
+#define KNOWHERE_ERROR_TEXT "KNOWHERE Error:"
+
+#define KNOWHERE_LOG_TRACE LOG(TRACE) << KNOWHERE_DOMAIN_NAME
+#define KNOWHERE_LOG_DEBUG LOG(DEBUG) << KNOWHERE_DOMAIN_NAME
+#define KNOWHERE_LOG_INFO LOG(INFO) << KNOWHERE_DOMAIN_NAME
+#define KNOWHERE_LOG_WARNING LOG(WARNING) << KNOWHERE_DOMAIN_NAME
+#define KNOWHERE_LOG_ERROR LOG(ERROR) << KNOWHERE_DOMAIN_NAME
+#define KNOWHERE_LOG_FATAL LOG(FATAL) << KNOWHERE_DOMAIN_NAME
+} // namespace knowhere
+} // namespace zilliz
\ No newline at end of file

cpp/src/core/knowhere/knowhere/common/exception.cpp

@@ -19,6 +19,7 @@
 #include <cstdio>
 
 #include "exception.h"
+#include "Log.h"
 
 namespace zilliz {
 namespace knowhere {

cpp/src/core/knowhere/knowhere/index/vector_index/gpu_ivf.cpp

@@ -30,6 +30,7 @@
 #include "cloner.h"
 #include "knowhere/adapter/faiss_adopt.h"
 #include "gpu_ivf.h"
+#include "knowhere/common/Log.h"
 
 #include <algorithm>
 
@@ -223,6 +224,7 @@ VectorIndexPtr GPUIVFPQ::CopyGpuToCpu(const Config &config) {
 }
 
 IndexModelPtr GPUIVFSQ::Train(const DatasetPtr &dataset, const Config &config) {
+    KNOWHERE_LOG_WARNING << "lalalalalalala";
     auto nlist = config["nlist"].as<size_t>();
     auto nbits = config["nbits"].as<size_t>(); // TODO(linxj):  gpu only support SQ4 SQ8 SQ16
     gpu_id_ = config.get_with_default("gpu_id", gpu_id_);