Relocating everything in the repo s.t. it can be merged into

the columnstore repo.

storage-manager/src/PosixTask.h

@@ -0,0 +1,69 @@
+/* Copyright (C) 2019 MariaDB Corporation
+
+   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; version 2 of
+   the License.
+
+   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, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA. */
+
+
+
+#ifndef POSIX_TASK_H_
+#define POSIX_TASK_H_
+
+#include <vector>
+#include <sys/types.h>
+#include <stdint.h>
+#include <iostream>
+#include "IOCoordinator.h"
+#include "messageFormat.h"
+
+namespace storagemanager
+{
+
+class PosixTask
+{
+    public:
+        PosixTask(int sock, uint length);
+        virtual ~PosixTask();
+        
+        // this should return false if there was a network error, true otherwise including for other errors
+        virtual bool run() = 0;
+        void primeBuffer();
+        
+    protected:
+        bool read(uint8_t *buf, uint length);
+        bool write(const std::vector<uint8_t> &buf);
+        bool write(sm_response &resp, uint payloadLength);
+        bool write(const uint8_t *buf, uint length);
+        void consumeMsg();   // drains the remaining portion of the message
+        uint getLength();  // returns the total length of the msg
+        uint getRemainingLength();   // returns the remaining length from the caller's perspective
+        void handleError(const char *name, int errCode);
+        
+        IOCoordinator *ioc;
+        
+    private:
+        PosixTask();
+        
+        int sock;
+        int totalLength;
+        uint remainingLengthInStream;
+        uint remainingLengthForCaller;
+        static const uint bufferSize = 4096;
+        uint8_t localBuffer[bufferSize];
+        uint bufferPos;
+        uint bufferLen;
+};
+
+}
+#endif