From ce4392425d274f13493f3be32106d2bf5bf8fa66 Mon Sep 17 00:00:00 2001
From: Kosuke Morimoto <kou.morimoto@gmail.com>
Date: Wed, 27 Sep 2023 21:43:12 +0900
Subject: [PATCH 1/2] mock level3

---
 lib/NGT/Capi.cpp | 35 ++++++++++-------------------------
 1 file changed, 10 insertions(+), 25 deletions(-)

diff --git a/lib/NGT/Capi.cpp b/lib/NGT/Capi.cpp
index d2608aa..120e83a 100644
--- a/lib/NGT/Capi.cpp
+++ b/lib/NGT/Capi.cpp
@@ -17,6 +17,8 @@
 #include <string>
 #include <iostream>
 #include <sstream>
+#include <atomic>
+#include <unistd.h>
 
 #include "NGT/Index.h"
 #include "NGT/GraphOptimizer.h"
@@ -867,17 +869,13 @@ ObjectID ngt_append_index(NGTIndex index, double *obj, uint32_t obj_dim, NGTErro
   }
 }
 
+std::atomic<ObjectID> id(1);
 ObjectID ngt_insert_index_as_float(NGTIndex index, float *obj, uint32_t obj_dim, NGTError error) {
-  if(index == NULL || obj == NULL || obj_dim == 0){
-    std::stringstream ss;
-    ss << "Capi : " << __FUNCTION__ << "() : parametor error: index = " << index << " obj = " << obj << " obj_dim = " << obj_dim;
-    operate_error_string_(ss, error);
-    return 0;
-  }
-
   try{
-    NGT::Index* pindex = static_cast<NGT::Index*>(index);
-    return pindex->insert(&obj[0], obj_dim);
+    std::vector<float> vobj(obj, obj+obj_dim);
+    auto expected = id.load();
+    ObjectID desired;
+    do { desired = expected + 1; } while(!id.compare_exchange_weak(expected, desired));
   }catch(std::exception &err) {
     std::stringstream ss;
     ss << "Capi : " << __FUNCTION__ << "() : Error: " << err.what();
@@ -1092,15 +1090,9 @@ bool ngt_batch_insert_index_as_float16(NGTIndex index, NGTFloat16 *obj, uint32_t
 }
 
 bool ngt_create_index(NGTIndex index, uint32_t pool_size, NGTError error) {
-  if(index == NULL){
-    std::stringstream ss;
-    ss << "Capi : " << __FUNCTION__ << "() : parametor error: idnex = " << index;
-    operate_error_string_(ss, error);
-    return false;
-  }
-
   try{
-    (static_cast<NGT::Index*>(index))->createIndex(pool_size);
+    sleep(2);
+    auto _pool_size = pool_size;
   }catch(std::exception &err) {
     std::stringstream ss;
     ss << "Capi : " << __FUNCTION__ << "() : Error: " << err.what();
@@ -1111,15 +1103,8 @@ bool ngt_create_index(NGTIndex index, uint32_t pool_size, NGTError error) {
 }
 
 bool ngt_remove_index(NGTIndex index, ObjectID id, NGTError error) {
-  if(index == NULL){
-    std::stringstream ss;
-    ss << "Capi : " << __FUNCTION__ << "() : parametor error: idnex = " << index;
-    operate_error_string_(ss, error);
-    return false;
-  }
-
   try{
-    (static_cast<NGT::Index*>(index))->remove(id);
+    auto _id = id;
   }catch(std::exception &err) {
     std::stringstream ss;
     ss << "Capi : " << __FUNCTION__ << "() : Error: " << err.what();

From 86f42554b619a08adebc9e7e6432d3556114e877 Mon Sep 17 00:00:00 2001
From: Kosuke Morimoto <kou.morimoto@gmail.com>
Date: Thu, 28 Sep 2023 01:17:29 +0900
Subject: [PATCH 2/2] fix

---
 lib/NGT/Capi.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/NGT/Capi.cpp b/lib/NGT/Capi.cpp
index 120e83a..19e4210 100644
--- a/lib/NGT/Capi.cpp
+++ b/lib/NGT/Capi.cpp
@@ -876,6 +876,7 @@ ObjectID ngt_insert_index_as_float(NGTIndex index, float *obj, uint32_t obj_dim,
     auto expected = id.load();
     ObjectID desired;
     do { desired = expected + 1; } while(!id.compare_exchange_weak(expected, desired));
+    return desired;
   }catch(std::exception &err) {
     std::stringstream ss;
     ss << "Capi : " << __FUNCTION__ << "() : Error: " << err.what();