NCCLOUD
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00001 00007 /* =================================================================== 00008 Copyright (c) 2013, Henry C. H. Chen 00009 All rights reserved. 00010 00011 Redistribution and use in source and binary forms, with or without 00012 modification, are permitted provided that the following conditions are 00013 met: 00014 00015 - Redistributions of source code must retain the above copyright 00016 notice, this list of conditions and the following disclaimer. 00017 00018 - Redistributions in binary form must reproduce the above copyright 00019 notice, this list of conditions and the following disclaimer in 00020 the documentation and/or other materials provided with the 00021 distribution. 00022 00023 - Neither the name of the Chinese University of Hong Kong nor the 00024 names of its contributors may be used to endorse or promote 00025 products derived from this software without specific prior written 00026 permission. 00027 00028 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00029 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00030 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 00031 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 00032 HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00033 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 00034 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 00035 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 00036 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00037 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 00038 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00039 =================================================================== */ 00040 00041 00042 #ifndef NCCLOUD_STORAGE_H 00043 #define NCCLOUD_STORAGE_H 00044 00045 #include <map> 00046 #include <string> 00047 #include <vector> 00048 00049 00051 class Storage 00052 { 00053 public: 00057 static Storage *use_storage(int type); 00058 00059 00063 virtual int init(std::map<std::string, std::string> &storage_param) = 0; 00064 00065 00071 virtual int store_chunk(std::string &srcdir, std::string &filename, 00072 int chunk_index) = 0; 00073 00074 00076 virtual int store_chunks(std::string &srcdir, std::string &filename, 00077 std::vector<int> &chunk_indices) = 0; 00078 00079 00084 virtual int store_metadata(std::string &srcdir, std::string &filename) = 0; 00085 00086 00088 virtual int store_metadata_and_chunks(std::string &srcdir, std::string &filename, 00089 std::vector<int> &chunk_indices) = 0; 00090 00091 00097 virtual int get_chunk(std::string &dstdir, std::string &filename, 00098 int chunk_index) = 0; 00099 00100 00102 virtual int get_chunks(std::string &dstdir, std::string &filename, 00103 std::vector<int> &chunk_indices) = 0; 00104 00105 00110 virtual int get_metadata(std::string &dstdir, std::string &filename) = 0; 00111 00112 00114 virtual int get_metadata_and_chunks(std::string &dstdir, std::string &filename, 00115 std::vector<int> &chunk_indices) = 0; 00116 00117 00122 virtual int delete_chunk(std::string &filename, int chunk_index) = 0; 00123 00124 00126 virtual int delete_chunks(std::string &filename, std::vector<int> &chunk_indices) = 0; 00127 00128 00132 virtual int delete_metadata(std::string &filename) = 0; 00133 00134 00136 virtual int delete_metadata_and_chunks(std::string &filename, 00137 std::vector<int> &chunk_indices) = 0; 00138 00139 00142 virtual int list_files(void) = 0; 00143 00144 00147 virtual int check_health(void) = 0; 00148 }; 00149 00150 #endif /* NCCLOUD_STORAGE_H */ 00151