New object for cached database, also ClientInfo class

core/account.cpp

@@ -93,6 +93,8 @@ Account::Account(const QString& p_login, const QString& p_server, const QString&
     QObject::connect(reconnectTimer, &QTimer::timeout, this, &Account::onReconnectTimer);
     
     if (name == "Test") {
+        qDebug() << "Presence capabilities: " << presence.capabilityNode();
+
         QXmppLogger* logger = new QXmppLogger(this);
         logger->setLoggingType(QXmppLogger::SignalLogging);
         client.setLogger(logger);

core/squawk.h

@@ -31,8 +31,10 @@
 #include "shared/enums.h"
 #include "shared/message.h"
 #include "shared/global.h"
+#include "shared/clientinfo.h"
 #include "networkaccess.h"
 #include "external/simpleCrypt/simplecrypt.h"
+#include <core/storage/cache.h>
 
 #ifdef WITH_KWALLET
 #include "passwordStorageEngines/kwallet.h"
@@ -135,6 +137,7 @@ private:
     Shared::Availability state;
     NetworkAccess network;
     bool isInitialized;
+    //Cache<Shared::ClientInfo> clientCache;
 
 #ifdef WITH_KWALLET
     PSE::KWallet kwallet;

core/storage/CMakeLists.txt

@@ -5,4 +5,6 @@ target_sources(squawk PRIVATE
     storage.h
     urlstorage.cpp
     urlstorage.h
+    cache.cpp
+    cache.h
 )

core/storage/cache.cpp

@@ -0,0 +1,69 @@
+// Squawk messenger. 
+// Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#include "cache.h"
+
+#include <shared/clientinfo.h>
+
+template class Core::Cache<Shared::ClientInfo>;
+
+template <class T>
+Core::Cache<T>::Cache(const QString& name):
+    storage(name),
+    cache(new std::map<QString, T> ()) {}
+
+template <class T>
+Core::Cache<T>::~Cache() {
+    close();
+    delete cache;
+}
+
+template <class T>
+void Core::Cache<T>::open() {
+    storage.open();}
+
+template <class T>
+void Core::Cache<T>::close() {
+    storage.close();}
+
+template <class T>
+void Core::Cache<T>::addRecord(const QString& key, const T& value) {
+    storage.addRecord(key, value);
+    cache->insert(std::make_pair(key, value));
+}
+
+template <class T>
+T Core::Cache<T>::getRecord(const QString& key) const {
+    typename std::map<QString, T>::const_iterator itr = cache->find(key);
+    if (itr == cache->end()) {
+        T value = storage.getRecord(key);
+        itr = cache->insert(std::make_pair(key, value)).first;
+    }
+
+    return itr->second;
+}
+
+template<typename T>
+void Core::Cache<T>::changeRecord(const QString& key, const T& value) {
+    storage.changeRecord(key, value);
+    cache->at(key) = value;
+}
+
+template<typename T>
+void Core::Cache<T>::removeRecord(const QString& key) {
+    storage.removeRecord(key);
+    cache->erase(key);
+}

core/storage/cache.h

@@ -0,0 +1,50 @@
+// Squawk messenger. 
+// Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef CORE_CACHE_H
+#define CORE_CACHE_H
+
+#include <map>
+
+#include <QString>
+
+#include <core/storage/storage.h>
+
+namespace Core {
+
+template <class T>
+class Cache
+{
+public:
+    Cache(const QString& name);
+    ~Cache();
+
+    void open();
+    void close();
+
+    void addRecord(const QString& key, const T& value);
+    void changeRecord(const QString& key, const T& value);
+    void removeRecord(const QString& key);
+    T getRecord(const QString& key) const;
+
+private:
+    Core::Storage<T> storage;
+    std::map<QString, T>* cache;
+};
+
+}
+
+#endif // CORE_CACHE_H

core/storage/storage.cpp

@@ -21,7 +21,12 @@
 
 #include "storage.h"
 
-Core::Storage::Storage(const QString& p_name):
+#include <shared/clientinfo.h>
+
+template class Core::Storage<Shared::ClientInfo>;
+
+template <class T>
+Core::Storage<T>::Storage(const QString& p_name):
     name(p_name),
     opened(false),
     environment(),
@@ -29,12 +34,14 @@ Core::Storage::Storage(const QString& p_name):
 {
 }
 
-Core::Storage::~Storage()
+template <class T>
+Core::Storage<T>::~Storage()
 {
     close();
 }
 
-void Core::Storage::open()
+template <class T>
+void Core::Storage<T>::open()
 {
     if (!opened) {
         mdb_env_create(&environment);
@@ -61,7 +68,8 @@ void Core::Storage::open()
     }
 }
 
-void Core::Storage::close()
+template <class T>
+void Core::Storage<T>::close()
 {
     if (opened) {
         mdb_dbi_close(environment, base);
@@ -70,19 +78,22 @@ void Core::Storage::close()
     }
 }
 
-void Core::Storage::addRecord(const QString& key, const QString& value)
+template <class T>
+void Core::Storage<T>::addRecord(const QString& key, const T& value)
 {
     if (!opened) {
         throw Archive::Closed("addRecord", name.toStdString());
     }
+    QByteArray ba;
+    QDataStream ds(&ba, QIODevice::WriteOnly);
     const std::string& id = key.toStdString();
-    const std::string& val = value.toStdString();
+    ds << value;
     
     MDB_val lmdbKey, lmdbData;
     lmdbKey.mv_size = id.size();
     lmdbKey.mv_data = (char*)id.c_str();
-    lmdbData.mv_size = val.size();
-    lmdbData.mv_data = (char*)val.c_str();
+    lmdbData.mv_size = ba.size();
+    lmdbData.mv_data = (uint8_t*)ba.data();
     MDB_txn *txn;
     mdb_txn_begin(environment, NULL, 0, &txn);
     int rc;
@@ -99,19 +110,23 @@ void Core::Storage::addRecord(const QString& key, const QString& value)
     }
 }
 
-void Core::Storage::changeRecord(const QString& key, const QString& value)
+template <class T>
+void Core::Storage<T>::changeRecord(const QString& key, const T& value)
 {
     if (!opened) {
         throw Archive::Closed("changeRecord", name.toStdString());
     }
+
+    QByteArray ba;
+    QDataStream ds(&ba, QIODevice::WriteOnly);
     const std::string& id = key.toStdString();
-    const std::string& val = value.toStdString();
+    ds << value;
     
     MDB_val lmdbKey, lmdbData;
     lmdbKey.mv_size = id.size();
     lmdbKey.mv_data = (char*)id.c_str();
-    lmdbData.mv_size = val.size();
-    lmdbData.mv_data = (char*)val.c_str();
+    lmdbData.mv_size = ba.size();
+    lmdbData.mv_data = (uint8_t*)ba.data();
     MDB_txn *txn;
     mdb_txn_begin(environment, NULL, 0, &txn);
     int rc;
@@ -126,7 +141,8 @@ void Core::Storage::changeRecord(const QString& key, const QString& value)
     }
 }
 
-QString Core::Storage::getRecord(const QString& key) const
+template <class T>
+T Core::Storage<T>::getRecord(const QString& key) const
 {
     if (!opened) {
         throw Archive::Closed("addElement", name.toStdString());
@@ -149,14 +165,18 @@ QString Core::Storage::getRecord(const QString& key) const
             throw Archive::Unknown(name.toStdString(), mdb_strerror(rc));
         }
     } else {
-        std::string sId((char*)lmdbData.mv_data, lmdbData.mv_size);
-        QString value(sId.c_str());
+        QByteArray ba((char*)lmdbData.mv_data, lmdbData.mv_size);
+        QDataStream ds(&ba, QIODevice::ReadOnly);
+        T value;
+        ds >> value;
         mdb_txn_abort(txn);
+
         return value;
     }
 }
 
-void Core::Storage::removeRecord(const QString& key)
+template <class T>
+void Core::Storage<T>::removeRecord(const QString& key)
 {
     if (!opened) {
         throw Archive::Closed("addElement", name.toStdString());

core/storage/storage.h

@@ -29,6 +29,7 @@ namespace Core {
 /**
  * @todo write docs
  */
+template <class T>
 class Storage
 {
 public:
@@ -38,10 +39,10 @@ public:
     void open();
     void close();
     
-    void addRecord(const QString& key, const QString& value);
-    void changeRecord(const QString& key, const QString& value);
+    void addRecord(const QString& key, const T& value);
+    void changeRecord(const QString& key, const T& value);
     void removeRecord(const QString& key);
-    QString getRecord(const QString& key) const;
+    T getRecord(const QString& key) const;
     
     
 private: