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/*
* ============LICENSE_START==========================================
* org.onap.music
* ===================================================================
* Copyright (c) 2017 AT&T Intellectual Property
* ===================================================================
* 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=============================================
* ====================================================================
*/
package org.onap.music.lockingservice;
import org.onap.music.eelf.logging.EELFLoggerDelegate;
import org.onap.music.eelf.logging.format.ErrorSeverity;
import org.onap.music.eelf.logging.format.ErrorTypes;
/**
* Represents an ephemeral znode name which has an ordered sequence number and can be sorted in
* order
*
*/
class ZNodeName implements Comparable<ZNodeName> {
private final String name;
private String prefix;
private int sequence = -1;
private EELFLoggerDelegate logger = EELFLoggerDelegate.getLogger(ZNodeName.class);
public ZNodeName(String name) {
if (name == null) {
throw new NullPointerException("id cannot be null");
}
this.name = name;
this.prefix = name;
int idx = name.lastIndexOf('-');
if (idx >= 0) {
this.prefix = name.substring(0, idx);
try {
this.sequence = Integer.parseInt(name.substring(idx + 1));
// If an exception occurred we misdetected a sequence suffix,
// so return -1.
} catch (NumberFormatException e) {
logger.error(EELFLoggerDelegate.errorLogger, e.getMessage(),"Number format exception "+idx, ErrorSeverity.ERROR, ErrorTypes.GENERALSERVICEERROR);
} catch (ArrayIndexOutOfBoundsException e) {
logger.error(EELFLoggerDelegate.errorLogger, e.getMessage(),"Array out of bounds for "+idx, ErrorSeverity.ERROR, ErrorTypes.GENERALSERVICEERROR);
}
}
}
@Override
public String toString() {
return name.toString();
}
@Override
public boolean equals(Object o) {
if (this == o)
return true;
if (o == null || getClass() != o.getClass())
return false;
ZNodeName sequence = (ZNodeName) o;
if (!name.equals(sequence.name))
return false;
return true;
}
@Override
public int hashCode() {
return name.hashCode() + 37;
}
public int compareTo(ZNodeName that) {
int answer = this.prefix.compareTo(that.prefix);
if (answer == 0) {
int s1 = this.sequence;
int s2 = that.sequence;
if (s1 == -1 && s2 == -1) {
return this.name.compareTo(that.name);
}
answer = s1 == -1 ? 1 : s2 == -1 ? -1 : s1 - s2;
}
return answer;
}
/**
* Returns the name of the znode
*/
public String getName() {
return name;
}
/**
* Returns the sequence number
*/
public int getZNodeName() {
return sequence;
}
/**
* Returns the text prefix before the sequence number
*/
public String getPrefix() {
return prefix;
}
}
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