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/*******************************************************************************
* ============LICENSE_START====================================================
* * org.onap.aai
* * ===========================================================================
* * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
* * Copyright © 2017 Amdocs
* * ===========================================================================
* * 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.
* * ============LICENSE_END====================================================
* *
* * ECOMP is a trademark and service mark of AT&T Intellectual Property.
* *
******************************************************************************/
package com.att.cadi.lur;
import java.security.Principal;
import java.util.List;
import com.att.cadi.CachingLur;
import com.att.cadi.CadiException;
import com.att.cadi.CredVal;
import com.att.cadi.Lur;
import com.att.cadi.Permission;
/**
* EpiLUR
*
* Short for "Epic LUR". Be able to run through a series of LURs to obtain the validation needed.
*
* The pun is better for the other pattern... "TAF" (aka EpiTaf), but it's still the larger picture of
* LURs that will be accomplished.
*
* FYI, the reason we separate LURs, rather than combine, is that Various User Repository Resources have
* different Caching requirements. For instance, the Local User Repo (with stand alone names), never expire, but might be
* refreshed with a change in Configuration File, while the Remote Service based LURs will need to expire at prescribed intervals
*
*
*/
public final class EpiLur implements Lur {
private final Lur[] lurs;
/**
* EpiLur constructor
*
* Construct the EpiLur from variable TAF parameters
* @param lurs
* @throws CadiException
*/
public EpiLur(Lur ... lurs) throws CadiException{
this.lurs = lurs;
if(lurs.length==0) throw new CadiException("Need at least one Lur implementation in constructor");
}
public boolean fish(Principal bait, Permission pond) {
if(pond==null) {
return false;
}
boolean rv = false;
Lur lur;
for(int i=0;!rv && i<lurs.length;++i) {
rv = (lur = lurs[i]).fish(bait, pond);
if(!rv && lur.handlesExclusively(pond)) break;
}
return rv;
}
public void fishAll(Principal bait, List<Permission> permissions) {
for(Lur lur : lurs) {
lur.fishAll(bait, permissions);
}
}
public void destroy() {
for(Lur lur : lurs) {
lur.destroy();
}
}
/**
* Return the first Lur (if any) which also implements UserPass
* @return
*/
public CredVal getUserPassImpl() {
for(Lur lur : lurs) {
if(lur instanceof CredVal) {
return (CredVal)lur;
}
}
return null;
}
// Never needed... Only EpiLur uses...
public boolean handlesExclusively(Permission pond) {
return false;
}
/**
* Get Lur for index. Returns null if out of range
* @param idx
* @return
*/
public Lur get(int idx) {
if(idx>=0 && idx<lurs.length) {
return lurs[idx];
}
return null;
}
public boolean supports(String userName) {
for(Lur l : lurs) {
if(l.supports(userName))return true;
}
return false;
}
public void remove(String id) {
for(Lur l : lurs) {
if(l instanceof CachingLur) {
((CachingLur<?>)l).remove(id);
}
}
}
public Lur subLur(Class<? extends Lur> cls ) {
for(Lur l : lurs) {
if(l.getClass().isAssignableFrom(cls)) {
return l;
}
}
return null;
}
@Override
public Permission createPerm(String p) {
return new LocalPermission(p);
}
/* (non-Javadoc)
* @see com.att.cadi.Lur#clear(java.security.Principal, java.lang.StringBuilder)
*/
@Override
public void clear(Principal p, StringBuilder report) {
for(Lur lur : lurs) {
lur.clear(p, report);
}
}
public String toString() {
StringBuilder sb = new StringBuilder();
for(Lur lur : lurs) {
sb.append(lur.getClass().getSimpleName());
sb.append(": Report\n");
sb.append(lur.toString());
sb.append('\n');
}
return sb.toString();
}
}
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