/*
* Licensed to the Apache Software Foundation (ASF) under one or more contributor license
* agreements. See the NOTICE file distributed with this work for additional information regarding
* copyright ownership. The ASF licenses this file to You 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.
*/
package org.apache.geode.distributed.internal;
import java.util.HashSet;
import org.apache.geode.internal.i18n.LocalizedStrings;
/**
* Provides an implementation of the {@link DistributionConfig} interface for a snapshot of running
* application's configuration. The snapshot can be taken, given to others, modified, and then
* applied to a currently running application.
* <p>
* Settors will fail if called on attributes that can not be modified when a system is running.
* <p>
* Instances should be obtained by calling {@link RuntimeDistributionConfigImpl#takeSnapshot}.
* <p/>
* Removed implementations of hashCode() and equals() that were throwing
* UnsupportedOperationException. See bug #50939 if you need to override those.
*/
public final class DistributionConfigSnapshot extends DistributionConfigImpl {
private static final long serialVersionUID = 7445728132965092798L;
private HashSet modifiable;
/**
* Constructs an internal system config given an existing one.
*
* @param dc an existing system configuration.
*/
public DistributionConfigSnapshot(DistributionConfig dc) {
super(dc);
this.modifiable = new HashSet(20);
String[] attNames = dc.getAttributeNames();
for (int i = 0; i < attNames.length; i++) {
if (dc.isAttributeModifiable(attNames[i])) {
this.modifiable.add(attNames[i]);
}
}
}
@Override
protected String _getUnmodifiableMsg(String attName) {
return LocalizedStrings.DistributionConfigSnapshot_THE_0_CONFIGURATION_ATTRIBUTE_CAN_NOT_BE_MODIFIED_WHILE_THE_SYSTEM_IS_RUNNING
.toLocalizedString(attName);
}
@Override
public boolean isAttributeModifiable(String attName) {
checkAttributeName(attName);
return modifiable.contains(attName);
}
@Override
protected boolean _modifiableDefault() {
return true;
}
}