able to use pipeline

debug/final_load.cc

@@ -202,7 +202,7 @@ static ResType load_files(std::string db, std::string table){
 unsigned long gcount=0;
 static
 void local_wrapper(const Item &i, const FieldMeta &fm, Analysis &a,
-                           List<Item> *const append_list) {
+                           List<Item> * append_list) {
     //append_list->push_back(&(const_cast<Item&>(i)));
     //do not use the plain strategy 
     std::vector<Item *> l;
@@ -252,6 +252,21 @@ void local_wrapper(const Item &i, const FieldMeta &fm, Analysis &a,
     }
 }
 
+static
+List<Item> * processRow(const std::vector<Item *> &row,
+                        const std::vector<std::string> &names,
+                        Analysis &analysis,
+                        std::string db,
+                        std::string table) {
+    List<Item> *const newList0 = new List<Item>();
+    for(auto i=0u;i<names.size();i++){
+        std::string field_name = names[i];
+        FieldMeta & fm = analysis.getFieldMeta(db,table,field_name);
+        local_wrapper(*row[i],fm,analysis,newList0);
+    }
+    return newList0;
+}
+
 
 int
 main(int argc, char* argv[]){
@@ -277,21 +292,69 @@ main(int argc, char* argv[]){
     const std::string head = std::string("INSERT INTO `")+db+"`.`"+annoTableName+"` ";
 
     /*reencryption to get the encrypted insert!!!*/
+/*    int currentCount=0;
+    List<List_item> newList;
     for(auto &row:res.rows) {
-        List<List_item> newList;
-        List<Item> *const newList0 = new List<Item>();
-        for(auto i=0u;i<res.names.size();i++){
+        List<Item> * newList0 = new List<Item>();
+        for(auto i=0u;i<res.names.size();i++) {
             std::string field_name = res.names[i];
             FieldMeta & fm = analysis.getFieldMeta(db,table,field_name);
             local_wrapper(*row[i],fm,analysis,newList0);
         }
         newList.push_back(newList0);
+        currentCount++;
+        if(currentCount==constGlobalConstants.pipelineCount){
+            currentCount=0;
+            std::ostringstream o;
+            insertManyValues(o,newList);
+            std::cout<<(head+o.str())<<std::endl;
+            //newList = List<List_item>();
+        }
+    } */
+/*    if(currentCount!=0){
         std::ostringstream o;
         insertManyValues(o,newList);
         std::cout<<(head+o.str())<<std::endl;
-    }
+    }*/
 
-    std::cout<<"gcount<<"<<gcount<<std::endl;
+    
+/*    for(auto &row:res.rows) {
+        List<List_item> newList;
+        List<Item> * newList0 = processRow(row,res.names,analysis,db,table);
+        newList.push_back(newList0);
+        std::ostringstream o;
+        insertManyValues(o,newList);
+        std::cout<<(head+o.str())<<std::endl;
+    }
+*/
+    unsigned int i=0u;
+    while(true){
+        List<List_item> newList;
+        int localCount=0;
+        for(;i<res.rows.size();i++){
+            List<Item> * newList0 = processRow(res.rows[i],
+                                               res.names,
+                                               analysis,db,table);
+            newList.push_back(newList0);
+            localCount++;
+            if(localCount==constGlobalConstants.pipelineCount){
+                std::ostringstream o;
+                insertManyValues(o,newList);
+                std::cout<<(head+o.str())<<std::endl;
+                i++;
+                break;
+            }
+        }
+        if(i>=res.rows.size()){
+            if(localCount!=constGlobalConstants.pipelineCount) {
+                std::ostringstream o;
+                insertManyValues(o,newList);
+                std::cout<<(head+o.str())<<std::endl;
+            }
+            break;
+        }
+    }
+//    std::cout<<"gcount<<"<<gcount<<std::endl;
     return 0;
 }
 

debug/final_load.cc.back

@@ -131,16 +131,18 @@ void initGfb(std::vector<FieldMetaTrans> &res,std::string db,std::string table){
     gfb.field_names = field_names;
     gfb.field_types = field_types;
     gfb.field_lengths = field_lengths;
+
     //then we should read the vector
     std::string prefix = std::string("data/")+db+"/"+table+"/";
     for(unsigned int i=0u; i<gfb.field_names.size(); i++) {
         std::string filename = prefix + gfb.field_names[i];
         std::vector<std::string> column;
         if(IS_NUM(gfb.field_types[i])){
-            load_num_file_count(filename,column,constGlobalConstants.loadCount);
+              loadFileNoEscapeLimitCount(filename,column,constGlobalConstants.loadCount);
         }else{
-            load_string_file_count(filename,column,gfb.field_lengths[i],constGlobalConstants.loadCount);
+              loadFileEscapeLimitCount(filename,column,gfb.field_lengths[i],constGlobalConstants.loadCount);
         }
+        std::reverse(column.begin(),column.end());
         gfb.annoOnionNameToFileVector[gfb.field_names[i]] = std::move(column);
     }
     //init another map
@@ -171,8 +173,6 @@ static ResType load_files(std::string db, std::string table){
     //why do we need this??
     create_embedded_thd(0);
     rawMySQLReturnValue resraw;
-//    vector<vector<string>> resss_field = loadTableFieldsForDecryption(db,
-//                                         table,field_names, field_types, field_lengths);
     vector<vector<string>> res_field;   
     for(auto item:field_names){
         res_field.push_back(gfb.annoOnionNameToFileVector[item]);
@@ -199,6 +199,7 @@ static ResType load_files(std::string db, std::string table){
     return finalresults;
 }
 
+unsigned long gcount=0;
 static
 void local_wrapper(const Item &i, const FieldMeta &fm, Analysis &a,
                            List<Item> *const append_list) {
@@ -216,7 +217,6 @@ void local_wrapper(const Item &i, const FieldMeta &fm, Analysis &a,
             std::vector<std::string> &tempFileVector = gfb.annoOnionNameToFileVector[annoOnionName];
             std::string in = tempFileVector.back();            
             if(IS_NUM(type)){
-                //std::string in("11");
                 unsigned int len = annoOnionName.size();
                 if(len>4u&&annoOnionName.substr(len-4)=="ASHE"){
                     l.push_back(MySQLFieldTypeToItem(type,in));
@@ -225,13 +225,12 @@ void local_wrapper(const Item &i, const FieldMeta &fm, Analysis &a,
                                 Item_int(static_cast<ulonglong>(valFromStr(in))) );
                 }
             }else{
-                //std::string in("hehe");
                 l.push_back(MySQLFieldTypeToItem(type,in));
             }
             tempFileVector.pop_back();
-            //l.push_back(&(const_cast<Item&>(i)));
         }else{
             l.push_back(my_encrypt_item_layers(i, o, *om, a, IV));
+            gcount++;
         }
     }
     std::string saltName = fm.getSaltName();
@@ -239,8 +238,6 @@ void local_wrapper(const Item &i, const FieldMeta &fm, Analysis &a,
         if(gfb.annoOnionNameToFileVector.find(saltName)!=gfb.annoOnionNameToFileVector.end()){
             std::vector<std::string> &tempFileVector = gfb.annoOnionNameToFileVector[saltName];
             std::string in = tempFileVector.back();
-//            enum_field_types type = static_cast<enum_field_types>(gfb.annoOnionNameToType[saltName]);
-//            l.push_back(MySQLFieldTypeToItem(type,in));
             l.push_back( new (current_thd->mem_root)
                                 Item_int(static_cast<ulonglong>(valFromStr(in)))
              );
@@ -293,6 +290,8 @@ main(int argc, char* argv[]){
         insertManyValues(o,newList);
         std::cout<<(head+o.str())<<std::endl;
     }
+
+    std::cout<<"gcount<<"<<gcount<<std::endl;
     return 0;
 }
 

debug/final_load_low_memory.cc

@@ -131,58 +131,31 @@ void initGfb(std::vector<FieldMetaTrans> &res,std::string db,std::string table){
     gfb.field_names = field_names;
     gfb.field_types = field_types;
     gfb.field_lengths = field_lengths;
+
     //then we should read the vector
     std::string prefix = std::string("data/")+db+"/"+table+"/";
-
-    unsigned long tupleNum=0;
     for(unsigned int i=0u; i<gfb.field_names.size(); i++) {
         std::string filename = prefix + gfb.field_names[i];
         std::vector<std::string> column;
         if(IS_NUM(gfb.field_types[i])){
-            load_num_file_count(filename,column,constGlobalConstants.loadCount);
+              loadFileNoEscapeLimitCount(filename,column,constGlobalConstants.loadCount);
         }else{
-            load_string_file_count(filename,column,gfb.field_lengths[i],constGlobalConstants.loadCount);
+              loadFileEscapeLimitCount(filename,column,gfb.field_lengths[i],constGlobalConstants.loadCount);
         }
-        tupleNum = column.size();
+        std::reverse(column.begin(),column.end());
         gfb.annoOnionNameToFileVector[gfb.field_names[i]] = std::move(column);
-    }//get memory 31%
-
+    }
     //init another map
     for(unsigned int i=0;i<gfb.field_names.size();i++){
         gfb.annoOnionNameToType[gfb.field_names[i]] = gfb.field_types[i];
     }
-    //extra transformation. transform rows to item*
-    for(unsigned int i=0;i<gfb.field_names.size();i++){
-        gfb.annoOnionNameToItemVector[gfb.field_names[i]] = std::move(itemNullVector(tupleNum));
-        auto &dest = gfb.annoOnionNameToItemVector[gfb.field_names[i]];
-        auto &src = gfb.annoOnionNameToFileVector[gfb.field_names[i]];
-        enum_field_types ct = static_cast<enum_field_types>(field_types[i]);
-        for(unsigned int j=0; j<tupleNum; j++){
-            if(IS_NUM(ct)){
-                unsigned int len = gfb.field_names[i].size();
-                if(len>4u&&gfb.field_names[i].substr(len-4)=="ASHE"){
-                    dest[j] = MySQLFieldTypeToItem(static_cast<enum_field_types>(gfb.field_types[i]),src[j]);
-                }else{//other fields should be unsigned
-                    dest[j] = new (current_thd->mem_root)
-                                Item_int(static_cast<ulonglong>(valFromStr(src[j])));
-                }
-            }else{
-                dest[j] = MySQLFieldTypeToItem(static_cast<enum_field_types>(gfb.field_types[i]),src[j]);
-            }
-        }
-        gfb.annoOnionNameToFileVector.erase(gfb.field_names[i]);
-    }//here we get memory 100% and segment fault
-}
-
-static
-ResType 
-tempfunction(std::vector<std::string> names,
-             std::vector<enum_field_types> types,std::vector<std::vector<Item*>> &rows){
-    return ResType(true,0,0,std::move(names),std::move(types),std::move(rows));
 }
 
 /*load file, decrypt, and then return data plain fields in the type ResType*/
-static ResType load_files_low_memory(std::string db, std::string table){
+static 
+ResType 
+load_files(std::string db, 
+           std::string table) {
     std::unique_ptr<SchemaInfo> schema =  myLoadSchemaInfo(embeddedDir);
     //get all the fields in the tables.
     std::vector<FieldMeta*> fms = getFieldMeta(*schema,db,table);
@@ -191,7 +164,6 @@ static ResType load_files_low_memory(std::string db, std::string table){
     for(unsigned int i=0;i<fms.size();i++){
         res[i].trans(fms[i]);
     }
-    create_embedded_thd(0);
     //then we should load all the fields available
     initGfb(res,db,table);   
 
@@ -201,39 +173,42 @@ static ResType load_files_low_memory(std::string db, std::string table){
     vector<int> field_types = ggbt.field_types;
     vector<int> field_lengths = ggbt.field_lengths;
 
-    //why do we need this?? the error comes from itemNullVector
-//    create_embedded_thd(0);
-
-    vector<vector<Item*>> res_field_item;
+    //why do we need this??
+    create_embedded_thd(0);
+    rawMySQLReturnValue resraw;
+    vector<vector<string>> res_field;   
     for(auto item:field_names){
-        res_field_item.push_back(gfb.annoOnionNameToItemVector[item]);
+        res_field.push_back(gfb.annoOnionNameToFileVector[item]);
     }
-
     //then transform it to ress_fields
-    unsigned int length = res_field_item[0].size();
-    vector<vector<Item*>> ress_field_item;
+    unsigned int length = res_field[0].size();
+
+    vector<vector<string>> ress_field;
     for(unsigned int i=0u;i<length;i++){
-        vector<Item*> row= itemNullVector(res_field_item.size());
-        for(unsigned int j=0u;j<res_field_item.size();j++){
-            row[j] = res_field_item[j][i];
+        vector<string> row;
+        for(unsigned int j=0u;j<res_field.size();j++){
+            row.push_back(res_field[j][i]);
         }
-        ress_field_item.push_back(row);
+        ress_field.push_back(row);
     }
 
-    std::vector<enum_field_types> fieldTypes;
+    resraw.rowValues = ress_field;
+    resraw.fieldNames = field_names;
     for(unsigned int i=0;i<field_types.size();++i){
-	fieldTypes.push_back(static_cast<enum_field_types>(field_types[i]));
+	resraw.fieldTypes.push_back(static_cast<enum_field_types>(field_types[i]));
     }
-    ResType rawtorestype = tempfunction(field_names, 
-                           fieldTypes, ress_field_item);
 
+    ResType rawtorestype = rawMySQLReturnValue_to_ResType(false, &resraw);
     auto finalresults = decryptResults(rawtorestype,*rm);
-    return std::move(finalresults);
+    return finalresults;
 }
 
+unsigned long gcount=0;
 static
-void local_wrapper_low_memory_item(const Item &i, const FieldMeta &fm, Analysis &a,
-                           List<Item> *const append_list){
+void local_wrapper(const Item &i, const FieldMeta &fm, Analysis &a,
+                           List<Item> *const append_list) {
+    //append_list->push_back(&(const_cast<Item&>(i)));
+    //do not use the plain strategy 
     std::vector<Item *> l;
     const uint64_t salt = fm.getHasSalt() ? randomValue() : 0;
     uint64_t IV = salt;
@@ -242,21 +217,35 @@ void local_wrapper_low_memory_item(const Item &i, const FieldMeta &fm, Analysis
         OnionMeta * const om = it.second;
         std::string annoOnionName = om->getAnonOnionName();
         if(gfb.annoOnionNameToFileVector.find(annoOnionName)!=gfb.annoOnionNameToFileVector.end()){
-            std::vector<Item*> &tempItemVector = gfb.annoOnionNameToItemVector[annoOnionName];
-            Item* in = tempItemVector.back();            
-            l.push_back(in);
-            tempItemVector.pop_back();
+            enum_field_types type = static_cast<enum_field_types>(gfb.annoOnionNameToType[annoOnionName]);
+            std::vector<std::string> &tempFileVector = gfb.annoOnionNameToFileVector[annoOnionName];
+            std::string in = tempFileVector.back();            
+            if(IS_NUM(type)){
+                unsigned int len = annoOnionName.size();
+                if(len>4u&&annoOnionName.substr(len-4)=="ASHE"){
+                    l.push_back(MySQLFieldTypeToItem(type,in));
+                }else{
+                    l.push_back( new (current_thd->mem_root)
+                                Item_int(static_cast<ulonglong>(valFromStr(in))) );
+                }
+            }else{
+                l.push_back(MySQLFieldTypeToItem(type,in));
+            }
+            tempFileVector.pop_back();
         }else{
             l.push_back(my_encrypt_item_layers(i, o, *om, a, IV));
+            gcount++;
         }
     }
     std::string saltName = fm.getSaltName();
     if (fm.getHasSalt()) {
         if(gfb.annoOnionNameToFileVector.find(saltName)!=gfb.annoOnionNameToFileVector.end()){
-            std::vector<Item*> &tempItemVector = gfb.annoOnionNameToItemVector[saltName];
-            Item* in = tempItemVector.back();
-            l.push_back(in);
-            tempItemVector.pop_back();
+            std::vector<std::string> &tempFileVector = gfb.annoOnionNameToFileVector[saltName];
+            std::string in = tempFileVector.back();
+            l.push_back( new (current_thd->mem_root)
+                                Item_int(static_cast<ulonglong>(valFromStr(in)))
+             );
+            tempFileVector.pop_back();
         }else{
             l.push_back(new Item_int(static_cast<ulonglong>(salt)));
         }
@@ -268,14 +257,12 @@ void local_wrapper_low_memory_item(const Item &i, const FieldMeta &fm, Analysis
 }
 
 
-
 int
 main(int argc, char* argv[]){
     init();
     create_embedded_thd(0);
-    std::string ip = "localhost";
     std::string db="tdb",table="student";
-
+    std::string ip="localhost";
     if(argc==4){
         ip = std::string(argv[1]);
         db = std::string(argv[2]);
@@ -288,25 +275,27 @@ main(int argc, char* argv[]){
     Analysis analysis(db, *schema, TK, SECURITY_RATING::SENSITIVE);
 
     /*choose decryption onion, load and decrypt to plain text*/
-    ResType res =  load_files_low_memory(db,table);
+    ResType res =  load_files(db,table);
     std::string annoTableName = analysis.getTableMeta(db,table).getAnonTableName();
 
     const std::string head = std::string("INSERT INTO `")+db+"`.`"+annoTableName+"` ";
 
     /*reencryption to get the encrypted insert!!!*/
-    for(auto &row:res.rows){
+    for(auto &row:res.rows) {
         List<List_item> newList;
         List<Item> *const newList0 = new List<Item>();
         for(auto i=0u;i<res.names.size();i++){
             std::string field_name = res.names[i];
             FieldMeta & fm = analysis.getFieldMeta(db,table,field_name);
-            local_wrapper_low_memory_item(*row[i],fm,analysis,newList0);
+            local_wrapper(*row[i],fm,analysis,newList0);
         }
         newList.push_back(newList0);
         std::ostringstream o;
         insertManyValues(o,newList);
         std::cout<<(head+o.str())<<std::endl;
     }
+
+    std::cout<<"gcount<<"<<gcount<<std::endl;
     return 0;
 }
 

debug/final_load_low_memory.cc.back

+/*1. store data as column files, and restore data as plaintext insert query
+* 2. plaintext insert query should be able to recover directly
+* 3. should be able to used exsisting data to reduce the computation overhead(to be implemented)
+*/
+#include <stdlib.h>
+#include <stdio.h>
+#include <string>
+#include <map>
+#include <iostream>
+#include <fstream>
+#include <sstream>
+#include <vector>
+#include <algorithm>
+#include "wrapper/reuse.hh"
+#include "wrapper/common.hh"
+#include "wrapper/insert_lib.hh"
+#include "util/constants.hh"
+using std::cout;
+using std::cin;
+using std::endl;
+using std::vector;
+using std::string;
+using std::to_string;
+static std::string embeddedDir="/t/cryt/shadow";
+char * globalEsp=NULL;
+int num_of_pipe = 4;
+//global map, for each client, we have one WrapperState which contains ProxyState.
+static std::map<std::string, WrapperState*> clients;
+//This connection mimics the behaviour of MySQL-Proxy
+Connect  *globalConn;
+/*for each field, convert the format to FieldMeta_Wrapper*/
+static void init(){
+    std::string client="192.168.1.1:1234";
+    //one Wrapper per user.
+    clients[client] = new WrapperState();    
+    //Connect phase
+    ConnectionInfo ci("localhost", "root", "letmein",3306);
+    const std::string master_key = "113341234";
+    char *buffer;
+    if((buffer = getcwd(NULL, 0)) == NULL){  
+        perror("getcwd error");  
+    }
+    embeddedDir = std::string(buffer)+"/shadow";
+    SharedProxyState *shared_ps = 
+			new SharedProxyState(ci, embeddedDir , master_key, 
+                                            determineSecurityRating());
+    assert(0 == mysql_thread_init());
+    //we init embedded database here.
+    clients[client]->ps = std::unique_ptr<ProxyState>(new ProxyState(*shared_ps));
+    clients[client]->ps->safeCreateEmbeddedTHD();
+    //Connect end!!
+    globalConn = new Connect(ci.server, ci.user, ci.passwd, ci.port);
+}
+
+//========================================================================================//
+
+
+fullBackUp gfb;
+
+struct batch{
+    vector<string> field_names;
+    vector<int> field_types;
+    vector<int> field_lengths;
+};
+
+batch ggbt;
+
+/*should choose the right decryption onion*/
+static
+std::shared_ptr<ReturnMeta> getReturnMeta(std::vector<FieldMeta*> fms,
+                                      std::vector<FieldMetaTrans> &tfds){
+    assert(fms.size()==tfds.size());
+    std::shared_ptr<ReturnMeta> myReturnMeta = std::make_shared<ReturnMeta>();
+    int pos=0;
+    //construct OLK
+    for(auto i=0u;i<tfds.size();i++){
+        //the order is DET,OPE,ASHE,AGG. other onions are not decryptable!!
+        int index = getDecryptionOnionIndex(tfds[i]);
+        if(index==-1) assert(0);
+
+        onion o = tfds[i].getChoosenOnionO()[index];
+        SECLEVEL l = tfds[i].getOriginalFieldMeta()->getOnionMeta(o)->getSecLevel();
+        FieldMeta *k = tfds[i].getOriginalFieldMeta();
+        OLK curOLK(o,l,k);
+        bool use_salt = false;
+        if(needsSalt(curOLK))
+            use_salt = true;
+	addToReturn(myReturnMeta.get(),pos++,curOLK,use_salt,k->getFieldName());
+
+        if(use_salt)
+            addSaltToReturn(myReturnMeta.get(),pos++);
+
+        ggbt.field_types.push_back(tfds[i].getChoosenFieldTypes()[index]);
+        ggbt.field_names.push_back(tfds[i].getChoosenOnionName()[index]);
+        ggbt.field_lengths.push_back(tfds[i].getChoosenFieldLengths()[index]);
+
+        if(use_salt){
+            ggbt.field_types.push_back(tfds[i].getSaltType());
+            ggbt.field_names.push_back(tfds[i].getSaltName());
+            ggbt.field_lengths.push_back(tfds[i].getSaltLength());
+        }
+    }
+    return myReturnMeta;
+}
+
+/*init global full backup. */
+static
+void initGfb(std::vector<FieldMetaTrans> &res,std::string db,std::string table){
+    vector<string> field_names;
+    vector<int> field_types;
+    vector<int> field_lengths;
+    /*choosen onions should all be included in gfb. salt is also included
+      it's hard to decide whether a FieldMetaTrans has salt because the senmantic is different from that of FieldMeta.
+    */
+    for(auto &item:res){
+        for(auto i:item.getChoosenOnionName()){
+            field_names.push_back(i);
+        }
+        for(auto i:item.getChoosenFieldTypes()){
+            field_types.push_back(i);
+        }
+        for(auto i:item.getChoosenFieldLengths()){
+            field_lengths.push_back(i);
+        }
+        if(item.getHasSalt()){
+            field_names.push_back(item.getSaltName());
+            field_types.push_back(item.getSaltType());
+            field_lengths.push_back(item.getSaltLength());
+        }
+    }
+    gfb.field_names = field_names;
+    gfb.field_types = field_types;
+    gfb.field_lengths = field_lengths;
+    //then we should read the vector
+    std::string prefix = std::string("data/")+db+"/"+table+"/";
+
+    unsigned long tupleNum=0;
+    for(unsigned int i=0u; i<gfb.field_names.size(); i++) {
+        std::string filename = prefix + gfb.field_names[i];
+        std::vector<std::string> column;
+        if(IS_NUM(gfb.field_types[i])){
+            load_num_file_count(filename,column,constGlobalConstants.loadCount);
+        }else{
+            load_string_file_count(filename,column,gfb.field_lengths[i],constGlobalConstants.loadCount);
+        }
+        tupleNum = column.size();
+        gfb.annoOnionNameToFileVector[gfb.field_names[i]] = std::move(column);
+    }//get memory 31%
+
+    //init another map
+    for(unsigned int i=0;i<gfb.field_names.size();i++){
+        gfb.annoOnionNameToType[gfb.field_names[i]] = gfb.field_types[i];
+    }
+    //extra transformation. transform rows to item*
+    for(unsigned int i=0;i<gfb.field_names.size();i++){
+        gfb.annoOnionNameToItemVector[gfb.field_names[i]] = std::move(itemNullVector(tupleNum));
+        auto &dest = gfb.annoOnionNameToItemVector[gfb.field_names[i]];
+        auto &src = gfb.annoOnionNameToFileVector[gfb.field_names[i]];
+        enum_field_types ct = static_cast<enum_field_types>(field_types[i]);
+        for(unsigned int j=0; j<tupleNum; j++){
+            if(IS_NUM(ct)){
+                unsigned int len = gfb.field_names[i].size();
+                if(len>4u&&gfb.field_names[i].substr(len-4)=="ASHE"){
+                    dest[j] = MySQLFieldTypeToItem(static_cast<enum_field_types>(gfb.field_types[i]),src[j]);
+                }else{//other fields should be unsigned
+                    dest[j] = new (current_thd->mem_root)
+                                Item_int(static_cast<ulonglong>(valFromStr(src[j])));
+                }
+            }else{
+                dest[j] = MySQLFieldTypeToItem(static_cast<enum_field_types>(gfb.field_types[i]),src[j]);
+            }
+        }
+        gfb.annoOnionNameToFileVector.erase(gfb.field_names[i]);
+    }//here we get memory 100% and segment fault
+}
+
+static
+ResType 
+tempfunction(std::vector<std::string> names,
+             std::vector<enum_field_types> types,std::vector<std::vector<Item*>> &rows){
+    return ResType(true,0,0,std::move(names),std::move(types),std::move(rows));
+}
+
+/*load file, decrypt, and then return data plain fields in the type ResType*/
+static ResType load_files_low_memory(std::string db, std::string table){
+    std::unique_ptr<SchemaInfo> schema =  myLoadSchemaInfo(embeddedDir);
+    //get all the fields in the tables.
+    std::vector<FieldMeta*> fms = getFieldMeta(*schema,db,table);
+    TableMetaTrans res_meta = loadTableMetaTrans(db,table);
+    std::vector<FieldMetaTrans> res = res_meta.getFts();
+    for(unsigned int i=0;i<fms.size();i++){
+        res[i].trans(fms[i]);
+    }
+    create_embedded_thd(0);
+    //then we should load all the fields available
+    initGfb(res,db,table);   
+
+    std::shared_ptr<ReturnMeta> rm = getReturnMeta(fms,res);
+
+    vector<string> field_names = ggbt.field_names;
+    vector<int> field_types = ggbt.field_types;
+    vector<int> field_lengths = ggbt.field_lengths;
+
+    //why do we need this?? the error comes from itemNullVector
+//    create_embedded_thd(0);
+
+    vector<vector<Item*>> res_field_item;
+    for(auto item:field_names){
+        res_field_item.push_back(gfb.annoOnionNameToItemVector[item]);
+    }
+
+    //then transform it to ress_fields
+    unsigned int length = res_field_item[0].size();
+    vector<vector<Item*>> ress_field_item;
+    for(unsigned int i=0u;i<length;i++){
+        vector<Item*> row= itemNullVector(res_field_item.size());
+        for(unsigned int j=0u;j<res_field_item.size();j++){
+            row[j] = res_field_item[j][i];
+        }
+        ress_field_item.push_back(row);
+    }
+
+    std::vector<enum_field_types> fieldTypes;
+    for(unsigned int i=0;i<field_types.size();++i){
+	fieldTypes.push_back(static_cast<enum_field_types>(field_types[i]));
+    }
+    ResType rawtorestype = tempfunction(field_names, 
+                           fieldTypes, ress_field_item);
+
+    auto finalresults = decryptResults(rawtorestype,*rm);
+    return std::move(finalresults);
+}
+
+static
+void local_wrapper_low_memory_item(const Item &i, const FieldMeta &fm, Analysis &a,
+                           List<Item> *const append_list){
+    std::vector<Item *> l;
+    const uint64_t salt = fm.getHasSalt() ? randomValue() : 0;
+    uint64_t IV = salt;
+    for (auto it : fm.orderedOnionMetas()) {
+        const onion o = it.first->getValue();
+        OnionMeta * const om = it.second;
+        std::string annoOnionName = om->getAnonOnionName();
+        if(gfb.annoOnionNameToFileVector.find(annoOnionName)!=gfb.annoOnionNameToFileVector.end()){
+            std::vector<Item*> &tempItemVector = gfb.annoOnionNameToItemVector[annoOnionName];
+            Item* in = tempItemVector.back();            
+            l.push_back(in);
+            tempItemVector.pop_back();
+        }else{
+            l.push_back(my_encrypt_item_layers(i, o, *om, a, IV));
+        }
+    }
+    std::string saltName = fm.getSaltName();
+    if (fm.getHasSalt()) {
+        if(gfb.annoOnionNameToFileVector.find(saltName)!=gfb.annoOnionNameToFileVector.end()){
+            std::vector<Item*> &tempItemVector = gfb.annoOnionNameToItemVector[saltName];
+            Item* in = tempItemVector.back();
+            l.push_back(in);
+            tempItemVector.pop_back();
+        }else{
+            l.push_back(new Item_int(static_cast<ulonglong>(salt)));
+        }
+    }
+
+    for (auto it : l) {
+        append_list->push_back(it);
+    }
+}
+
+
+
+int
+main(int argc, char* argv[]){
+    init();
+    create_embedded_thd(0);
+    std::string ip = "localhost";
+    std::string db="tdb",table="student";
+
+    if(argc==4){
+        ip = std::string(argv[1]);
+        db = std::string(argv[2]);
+        table = std::string(argv[3]);
+    }
+
+    std::unique_ptr<SchemaInfo> schema =  myLoadSchemaInfo(embeddedDir);
+    schema.get();
+    const std::unique_ptr<AES_KEY> &TK = std::unique_ptr<AES_KEY>(getKey(std::string("113341234")));
+    Analysis analysis(db, *schema, TK, SECURITY_RATING::SENSITIVE);
+
+    /*choose decryption onion, load and decrypt to plain text*/
+    ResType res =  load_files_low_memory(db,table);
+    std::string annoTableName = analysis.getTableMeta(db,table).getAnonTableName();
+
+    const std::string head = std::string("INSERT INTO `")+db+"`.`"+annoTableName+"` ";
+
+    /*reencryption to get the encrypted insert!!!*/
+    for(auto &row:res.rows){
+        List<List_item> newList;
+        List<Item> *const newList0 = new List<Item>();
+        for(auto i=0u;i<res.names.size();i++){
+            std::string field_name = res.names[i];
+            FieldMeta & fm = analysis.getFieldMeta(db,table,field_name);
+            local_wrapper_low_memory_item(*row[i],fm,analysis,newList0);
+        }
+        newList.push_back(newList0);
+        std::ostringstream o;
+        insertManyValues(o,newList);
+        std::cout<<(head+o.str())<<std::endl;
+    }
+    return 0;
+}
+

debug/final_store.cc.back

@@ -57,18 +57,32 @@ std::string getTestQuery(SchemaInfo &schema, std::vector<FieldMetaTrans> &tfds,
     return res;
 }
 
-static void write_meta(rawMySQLReturnValue& resraw,std::vector<FieldMetaTrans> &res,string db,string table){
+static void write_meta(std::vector<FieldMetaTrans> &res,string db,string table){
     TableMetaTrans mf(db,table,res);
     mf.set_db_table(db,table);
     mf.serialize();
 }
 
 static
-void write_raw_data_to_files(rawMySQLReturnValue& resraw,std::vector<FieldMetaTrans> &res ,string db,string table){
+void write_raw_data_to_files(MySQLColumnData& resraw,std::vector<FieldMetaTrans> &res ,string db,string table){
     //write metafiles
-    write_meta(resraw,res,db,table);
+    write_meta(res,db,table);
     //write datafiles
-    write_row_data(resraw,db,table);
+    std::string prefix = std::string("data/") +db+"/"+table+"/";
+    std::vector<std::string> filenames;
+    for(auto item:resraw.fieldNames){
+        item=prefix+item;
+        filenames.push_back(item);
+    }
+    int len = resraw.fieldNames.size();
+
+    for(int i=0;i<len;i++){
+        if(IS_NUM(resraw.fieldTypes[i])){
+            writeColumndataNum(resraw.columnData[i],filenames[i]);
+        }else{
+            writeColumndataEscapeString(resraw.columnData[i],filenames[i],resraw.maxLengths[i]);
+        }
+    }
 }
 
 static void store(std::string db, std::string table){
@@ -90,11 +104,11 @@ static void store(std::string db, std::string table){
     //generate the backup query and then fetch the tuples
     std::string backup_query = getTestQuery(*schema,res,db,table);
 
-    rawMySQLReturnValue resraw =  executeAndGetResultRemote(globalConn,backup_query);
+    MySQLColumnData resraw =  executeAndGetColumnData(globalConn,backup_query);
 
     //then we should set the type and length of FieldMetaTrans
     auto types = resraw.fieldTypes;
-    auto lengths = resraw.lengths;
+    auto lengths = resraw.maxLengths;
     int base_types = 0;
     int base_lengths = 0;
     for(auto &item:res){

test_util/verify_timer.cc

+#include "util/timer.hh"
+#include <iostream>
+#include <string>
+#include <unistd.h>
+using std::cout;
+using std::endl;
+
+int
+main(){
+    timer t;
+    sleep(1);
+    cout<<t.lap()<<endl;
+    return 0;
+}

util/timer.hh

 #pragma once
 
 #include <sys/time.h>
+#include <time.h>
 
 class timer {
  private:
@@ -9,19 +10,19 @@ class timer {
  public:
     timer() { lap(); }
 
-    uint64_t lap() {        /* returns microseconds */
-        uint64_t t0 = start;
-        uint64_t t1 = cur_usec();
+    unsigned long lap() {        /* returns microseconds */
+        unsigned long t0 = start;
+        unsigned long t1 = cur_usec();
         start = t1;
         return t1 - t0;
     }
 
- private:
-    static uint64_t cur_usec() {
+ private://uint64_t ?? not a type
+    static unsigned long cur_usec() {
         struct timeval tv;
         gettimeofday(&tv, 0);
-        return ((uint64_t)tv.tv_sec) * 1000000 + tv.tv_usec;
+        return ((unsigned long)tv.tv_sec) * 1000000 + tv.tv_usec;
     }
 
-    uint64_t start;
+    unsigned long start;
 };