143 lines
2.9 KiB
C++
143 lines
2.9 KiB
C++
/*
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----
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This file is part of SECONDO.
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Realizing a simple distributed filesystem for master thesis of stephan scheide
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Copyright (C) 2015,
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Faculty of Mathematics and Computer Science,
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Database Systems for New Applications.
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SECONDO is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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SECONDO 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 SECONDO; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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----
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//[$][\$]
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*/
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#pragma once
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#include "str.h"
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namespace dfs {
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/**
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* represents an URI
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* might be a datanode or an indexnode
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* URI for datanode is dfs-data://host:port
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* URI for indexnode is dfs-index://host:port
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*
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* this call handles creation and parsing
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*
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*/
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class URI {
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private:
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bool data;
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public:
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//Str protocol;
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/**
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* host of uri - localhost
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*/
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Str host;
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/**
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* port of uri - 4444
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*/
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Str port;
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/**
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* an optional path
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*/
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Str path;
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/**
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* factors up URI for indexnode
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* @param hostname
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* @param port
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* @return
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*/
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static URI forIndexFromHostAndPort(const char *hostname, int port) {
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URI u;
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u.data = false;
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u.host = Str(hostname);
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u.port = Str(port);
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return u;
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}
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static URI forIndexAtLocalhostDefaultPort() {
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return forIndexFromHostAndPort("localhost",4444);
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}
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/**
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* creates URI instance from URI string
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* @param s
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* @return
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*/
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static URI fromString(const Str &s) {
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if (s == "L" || s == "l") {
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return forIndexAtLocalhostDefaultPort();
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}
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//dfs-index://xxxxx:p/
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int f = s.find("://");
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Str type = s.substr(0, f);
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URI u;
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int fl = s.findLastChar(':');
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//wir haben eine portangabe :xxxx
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u.data = type.find("-index") == -1;
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if (fl != f) {
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u.host = s.substr(f + 3, fl - (f + 3));
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u.port = s.substr(fl + 1);
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} else {
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u.host = s.substr(f + 3);
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}
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return u;
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}
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/**
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* dfs-index://10.123.123.10:65/
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*/
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Str toString() const {
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Str s;
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s = s.append(data ? "dfs-data" : "dfs-index").append("://").append(host);
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if (port.len() > 0) s = s.append(":").append(port);
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return s.append(path);
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}
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/**
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* returns TRUE if this URI represents index node
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* @return
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*/
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bool isIndex() {
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return !data;
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}
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/**
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* returns TRUE if this URI represents data node
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* @return
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*/
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bool isData() {
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return data;
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}
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};
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} |