// =-=-=-=-=-=-=-
// public - accessor for parent pointer. return value based on validity of the pointer
error resource::get_parent( resource_ptr& _resc ) {
_resc = parent_;
if ( _resc.get() ) {
return SUCCESS();
}
else {
return ERROR( SYS_INVALID_INPUT_PARAM, "null parent pointer" );
}
} // get_parent
// =-=-=-=-=-=-=-
// function to load and return an initialized resource plugin
error load_resource_plugin( resource_ptr& _plugin,
const std::string _plugin_name,
const std::string _inst_name,
const std::string _context ) {
// =-=-=-=-=-=-=-
// resolve plugin directory
std::string plugin_home;
error ret = resolve_plugin_path( PLUGIN_TYPE_RESOURCE, plugin_home );
if ( !ret.ok() ) {
return PASS( ret );
}
resource* resc = 0;
ret = load_plugin< resource >(
resc,
_plugin_name,
plugin_home,
_inst_name,
_context );
if ( ret.ok() && resc ) {
_plugin.reset( resc );
}
else {
rodsLog(
LOG_DEBUG,
"loading impostor resource for [%s] of type [%s] with context [%s]",
_inst_name.c_str(),
_plugin_name.c_str(),
_context.c_str() );
_plugin.reset(
new impostor_resource(
"impostor_resource", "" ) );
}
return SUCCESS();
} // load_resource_plugin
// =-=-=-=-=-=-=-
// public - add a child resource to this resource. this is virtual in case a developer wants to
// do something fancier.
error resource::add_child( const std::string& _name, const std::string& _data, resource_ptr _resc ) {
// =-=-=-=-=-=-=-
// check params
if ( _name.empty() ) {
return ERROR( SYS_INVALID_INPUT_PARAM, "empty name" );
}
if ( 0 == _resc.get() ) {
return ERROR( SYS_INVALID_INPUT_PARAM, "null resource pointer" );
}
// =-=-=-=-=-=-=-
// add resource and data to the table
children_[ _name ] = std::pair< std::string, resource_ptr >( _data, _resc );
return SUCCESS();
} // add_child
error resolve_from_property( std::string _prop, // property key
value_type _value, // property value
resource_ptr& _resc ) { // outgoing resource variable
// =-=-=-=-=-=-=-
// simple flag to state a resource matching the prop and value is found
bool found = false;
// =-=-=-=-=-=-=-
// quick check on the resource table
if ( resources_.empty() ) {
return ERROR( SYS_INVALID_INPUT_PARAM, "empty resource table" );
}
// =-=-=-=-=-=-=-
// iterate through the map and search for our path
lookup_table< resource_ptr >::iterator itr = resources_.begin();
for ( ; itr != resources_.end(); ++itr ) {
// =-=-=-=-=-=-=-
// query resource for the property value
value_type value = NULL;
error ret = itr->second->get_property< value_type >( _prop, value );
// =-=-=-=-=-=-=-
// if we get a good parameter
if ( ret.ok() ) {
// =-=-=-=-=-=-=-
// compare incoming value and stored value, assumes that the
// values support the comparison operator
if ( _value == value ) {
// =-=-=-=-=-=-=-
// if we get a match, cache the resource pointer
// in the given out variable and bail
found = true;
_resc = itr->second;
break;
}
}
else {
std::stringstream msg;
msg << "resource_manager::resolve_from_property - ";
msg << "failed to get vault parameter from resource";
irods::error err = PASSMSG( msg.str(), ret );
}
} // for itr
// =-=-=-=-=-=-=-
// did we find a resource and is the ptr valid?
if ( true == found && _resc.get() ) {
return SUCCESS();
}
else {
std::stringstream msg;
msg << "failed to find resource for property [";
msg << _prop;
msg << "] and value [";
msg << _value;
msg << "]";
return ERROR( SYS_RESC_DOES_NOT_EXIST, msg.str() );
}
} // resolve_from_property
