project name change

src/storage.cpp

@@ -0,0 +1,121 @@
+// 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 "storage.h"
+
+LMDBAL::iStorage::iStorage(const std::string& p_name, Base* parent):
+    dbi(),
+    db(parent),
+    name(p_name)
+{}
+
+LMDBAL::iStorage::~iStorage() {}
+
+void LMDBAL::iStorage::drop() {
+    ensureOpened(dropMethodName);
+
+    MDB_txn *txn;
+    int rc = mdb_txn_begin(db->environment, NULL, 0, &txn);
+    if (rc) {
+        mdb_txn_abort(txn);
+        throw Unknown(db->name, mdb_strerror(rc), name);
+    }
+    rc = drop(txn);
+    if (rc) {
+        mdb_txn_abort(txn);
+        throw Unknown(db->name, mdb_strerror(rc), name);
+    }
+
+    mdb_txn_commit(txn);
+}
+
+int LMDBAL::iStorage::drop(MDB_txn* transaction) {
+    return mdb_drop(transaction, dbi, 0);
+}
+
+const std::string & LMDBAL::iStorage::dbName() const {
+    return db->name;}
+
+bool LMDBAL::iStorage::isDBOpened() const {
+    return db->opened;}
+
+void LMDBAL::iStorage::ensureOpened(const std::string& methodName) const {
+    if (!db->opened)
+        throw Closed(methodName, db->name, name);
+}
+
+uint32_t LMDBAL::iStorage::count() const {
+    ensureOpened(countMethodName);
+
+    MDB_txn *txn;
+    MDB_stat stat;
+    int rc = mdb_txn_begin(db->environment, NULL, MDB_RDONLY, &txn);
+    if (rc) {
+        mdb_txn_abort(txn);
+        throw Unknown(db->name, mdb_strerror(rc), name);
+    }
+
+    rc = mdb_stat(txn, dbi, &stat);
+    if (rc) {
+        mdb_txn_abort(txn);
+        throw Unknown(db->name, mdb_strerror(rc), name);
+    }
+    uint32_t amount = stat.ms_entries;
+    mdb_txn_abort(txn);
+    return amount;
+}
+
+void LMDBAL::iStorage::throwDuplicateOrUnknown(int rc, TransactionID txn, const std::string& key) const {
+    abortTransaction(txn);
+    if (rc == MDB_KEYEXIST)
+        throwDuplicate(key);
+    else
+        throwUnknown(rc);
+}
+
+void LMDBAL::iStorage::throwNotFoundOrUnknown(int rc, LMDBAL::TransactionID txn, const std::string& key) const {
+    abortTransaction(txn);
+    if (rc == MDB_NOTFOUND)
+        throwNotFound(key);
+    else
+        throwUnknown(rc);
+}
+
+void LMDBAL::iStorage::throwUnknown(int rc, LMDBAL::TransactionID txn) const {
+    abortTransaction(txn);
+    throwUnknown(rc);
+}
+
+void LMDBAL::iStorage::throwUnknown(int rc) const {
+    throw Unknown(db->name, mdb_strerror(rc), name);}
+
+void LMDBAL::iStorage::throwDuplicate(const std::string& key) const {
+    throw Exist(key, db->name, name);}
+
+void LMDBAL::iStorage::throwNotFound(const std::string& key) const {
+    throw NotFound(key, db->name, name);}
+
+LMDBAL::TransactionID LMDBAL::iStorage::beginReadOnlyTransaction() const {
+    return db->beginReadOnlyTransaction(name);}
+
+LMDBAL::TransactionID LMDBAL::iStorage::beginTransaction() const {
+    return db->beginTransaction(name);}
+
+void LMDBAL::iStorage::abortTransaction(LMDBAL::TransactionID id) const {
+    db->abortTransaction(id);}
+
+void LMDBAL::iStorage::commitTransaction(LMDBAL::TransactionID id) const {
+    db->commitTransaction(id);}