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one/include/NebulaTemplate.h

162 lines
4.6 KiB
C++

/* -------------------------------------------------------------------------- */
/* Copyright 2002-2012, OpenNebula Project Leads (OpenNebula.org) */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); you may */
/* not use this file except in compliance with the License. You may obtain */
/* a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. */
/* See the License for the specific language governing permissions and */
/* limitations under the License. */
/* -------------------------------------------------------------------------- */
#ifndef NEBULA_TEMPLATE_H_
#define NEBULA_TEMPLATE_H_
#include "Template.h"
#include <map>
/**
* This class provides the basic abstraction for OpenNebula configuration files
*/
class NebulaTemplate : public Template
{
public:
// -----------------------------------------------------------------------
// -----------------------------------------------------------------------
NebulaTemplate(const string& etc_location, const char * _conf_name)
{
conf_file = etc_location + _conf_name;
}
virtual ~NebulaTemplate(){};
// -----------------------------------------------------------------------
// -----------------------------------------------------------------------
int get(const char * name, vector<const Attribute*>& values) const
{
string _name(name);
return Template::get(_name,values);
};
void get(const char * name, string& values) const
{
string _name(name);
Template::get(_name,values);
};
void get(const char * name, int& values) const
{
string _name(name);
Template::get(_name,values);
};
void get(const char *name, unsigned int& values) const
{
int ival;
NebulaTemplate::get(name, ival);
values = static_cast<unsigned int>(ival);
};
void get(const char * name, time_t& values) const
{
const SingleAttribute * sattr;
vector<const Attribute *> attr;
string _name(name);
if ( Template::get(_name,attr) == 0 )
{
values = 0;
return;
}
sattr = dynamic_cast<const SingleAttribute *>(attr[0]);
if ( sattr != 0 )
{
istringstream is;
is.str(sattr->value());
is >> values;
}
else
values = 0;
};
void get(const char *name, float& value) const
{
string _name(name);
Template::get(_name,value);
};
// -----------------------------------------------------------------------
// -----------------------------------------------------------------------
/**
* Parse and loads the configuration in the template
*/
int load_configuration();
protected:
/**
* Full path to the configuration file
*/
string conf_file;
/**
* Defaults for the configuration file
*/
map<string, Attribute*> conf_default;
/**
* Sets the defaults value for the template
*/
virtual void set_conf_default() = 0;
};
// -----------------------------------------------------------------------------
// -----------------------------------------------------------------------------
class OpenNebulaTemplate : public NebulaTemplate
{
public:
OpenNebulaTemplate(const string& etc_location, const string& _var_location):
NebulaTemplate(etc_location, conf_name), var_location(_var_location)
{};
~OpenNebulaTemplate(){};
private:
/**
* Name for the configuration file, oned.conf
*/
static const char * conf_name;
/**
* Path for the var directory, for defaults
*/
string var_location;
/**
* Sets the defaults value for the template
*/
void set_conf_default();
};
#endif /*NEBULA_TEMPLATE_H_*/