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77 lines
2.5 KiB
C++
77 lines
2.5 KiB
C++
/* Copyright (C) 2019 MariaDB Corporation
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; version 2 of
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the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#pragma once
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#include <sys/stat.h>
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#include <string>
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#include "SocketPool.h"
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#include "bytestream.h"
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#include "bytestreampool.h"
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namespace idbdatafile
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{
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class SMComm : public boost::noncopyable
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{
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public:
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// This is a singleton. Get it with get()
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static SMComm* get();
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/* Open currently returns a stat struct so SMDataFile can set its initial position, otherwise
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behaves how you'd think. */
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int open(const std::string& filename, const int mode, struct stat* statbuf);
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ssize_t pread(const std::string& filename, void* buf, const size_t count, const off_t offset);
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ssize_t pwrite(const std::string& filename, const void* buf, const size_t count, const off_t offset);
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/* append exists for cases where the file is open in append mode. A normal write won't work
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because the file position/size may be out of date if there are multiple writers. */
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ssize_t append(const std::string& filename, const void* buf, const size_t count);
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int unlink(const std::string& filename);
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int stat(const std::string& filename, struct stat* statbuf);
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// added this one because it should be trivial to implement in SM, and prevents a large
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// operation in SMDataFile.
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int truncate(const std::string& filename, const off64_t length);
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int listDirectory(const std::string& path, std::list<std::string>* entries);
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// health indicator. 0 = processes are talking to each other and SM has read/write access to
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// the specified S3 bucket. Need to define specific error codes.
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int ping();
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int sync();
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int copyFile(const std::string& file1, const std::string& file2);
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virtual ~SMComm();
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private:
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SMComm();
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std::string getAbsFilename(const std::string& filename);
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SocketPool sockets;
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messageqcpp::ByteStreamPool buffers;
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std::string cwd;
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};
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} // namespace idbdatafile
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