eu.europa.esig.dss.tsl.cache.state.CacheStateEnum Maven / Gradle / Ivy
/**
* DSS - Digital Signature Services
* Copyright (C) 2015 European Commission, provided under the CEF programme
*
* This file is part of the "DSS - Digital Signature Services" project.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package eu.europa.esig.dss.tsl.cache.state;
/**
* Contains states for a cache record
*/
public enum CacheStateEnum implements CacheState {
/**
* Nothing / Expired content is stored in the cache
*/
REFRESH_NEEDED {
@Override
public void desync(CacheContext cacheContext) {
cacheContext.state(DESYNCHRONIZED);
}
@Override
public void refreshNeeded(CacheContext cacheContext) {
cacheContext.state(REFRESH_NEEDED);
}
@Override
public void toBeDeleted(CacheContext cacheContext) {
cacheContext.state(TO_BE_DELETED);
}
@Override
public void error(CacheContext cacheContext, CachedExceptionWrapper exception) {
cacheContext.error(exception);
}
},
/**
* The cache content is not synchronized with the application
*/
DESYNCHRONIZED {
@Override
public void sync(CacheContext cacheContext) {
cacheContext.state(SYNCHRONIZED);
}
},
/**
* The application and the cache content are synchronized
*/
SYNCHRONIZED {
@Override
public void desync(CacheContext cacheContext) {
cacheContext.state(DESYNCHRONIZED);
}
@Override
public void refreshNeeded(CacheContext cacheContext) {
cacheContext.state(REFRESH_NEEDED);
}
@Override
public void toBeDeleted(CacheContext cacheContext) {
cacheContext.state(TO_BE_DELETED);
}
@Override
public void sync(CacheContext cacheContext) {
cacheContext.state(SYNCHRONIZED);
}
},
/**
* The data cannot be downloaded / parsed / validated
*/
ERROR {
@Override
public void desync(CacheContext cacheContext) {
cacheContext.state(DESYNCHRONIZED);
}
@Override
public void refreshNeeded(CacheContext cacheContext) {
cacheContext.state(REFRESH_NEEDED);
}
@Override
public void toBeDeleted(CacheContext cacheContext) {
cacheContext.state(TO_BE_DELETED);
}
},
/**
* The cache content needs to be deleted
* NOTE: URL may become available again if not cleaned!
*/
TO_BE_DELETED {
@Override
public void desync(CacheContext cacheContext) {
cacheContext.state(DESYNCHRONIZED);
}
@Override
public void refreshNeeded(CacheContext cacheContext) {
cacheContext.state(REFRESH_NEEDED);
}
};
private static final String NOT_ALLOWED_TRANSITION = "Transition from '%s' to '%s' is not allowed";
@Override
public void sync(CacheContext cacheContext) {
throw new IllegalStateException(String.format(NOT_ALLOWED_TRANSITION, cacheContext.getCurrentState(), SYNCHRONIZED));
}
@Override
public void desync(CacheContext cacheContext) {
throw new IllegalStateException(String.format(NOT_ALLOWED_TRANSITION, cacheContext.getCurrentState(), DESYNCHRONIZED));
}
@Override
public void refreshNeeded(CacheContext cacheContext) {
throw new IllegalStateException(String.format(NOT_ALLOWED_TRANSITION, cacheContext.getCurrentState(), REFRESH_NEEDED));
}
@Override
public void toBeDeleted(CacheContext cacheContext) {
throw new IllegalStateException(String.format(NOT_ALLOWED_TRANSITION, cacheContext.getCurrentState(), TO_BE_DELETED));
}
@Override
public void error(CacheContext cacheContext, CachedExceptionWrapper exception) {
throw new IllegalStateException("Cannot store error");
}
}