/* “Copyright 2012 Megam Systems”
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.megam.deccanplato.provider.core;
import org.megam.core.api.secure.AccessToken;
import org.megam.core.api.secure.SecurityValidator;
public class AccessControlOperation extends AbstractCloudOperation {
private AccessToken token;
private SecurityValidator validator;
private boolean goAhead = false;
public AccessControlOperation(AccessToken tempToken, CloudMediator tempParent) {
super(tempParent);
getParent().registerCloudBridgeListener(this);
this.token=tempToken;
}
public boolean isFitToRun() {
return true;
}
@Override
public void preOperation() {
// Setup the call to the cache, if its not available then perform the
// call. The cache thingly will get handled in Security Validator
validator = new SecurityValidator();
}
public <T> CloudOperationOutput<T> handle() {
if (isFitToRun()) {
preOperation();
if (token != null && validator!=null) {
/**
* This performs the API check of the token to ensure that the
* requesting application can access it This is a dynamo DB call
* or something else.
*/
goAhead=validator.validate(token);
}
postOperation();
}
return null;
}
public void postOperation() {
// TODO Auto-generated method stub
}
public boolean canProceed() {
return goAhead;
}
}