2 * ============LICENSE_START==========================================
4 * ===================================================================
5 * Copyright (c) 2017 AT&T Intellectual Property
6 * ===================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
19 * ============LICENSE_END=============================================
20 * ====================================================================
22 package org.onap.music.lockingservice;
24 import com.att.eelf.configuration.EELFLogger;
25 import com.att.eelf.configuration.EELFManager;
28 * Represents an ephemeral znode name which has an ordered sequence number and can be sorted in
32 class ZNodeName implements Comparable<ZNodeName> {
33 private final String name;
34 private String prefix;
35 private int sequence = -1;
36 private static EELFLogger LOG = EELFManager.getInstance().getLogger(ZNodeName.class);
38 public ZNodeName(String name) {
40 throw new NullPointerException("id cannot be null");
44 int idx = name.lastIndexOf('-');
46 this.prefix = name.substring(0, idx);
48 this.sequence = Integer.parseInt(name.substring(idx + 1));
49 // If an exception occurred we misdetected a sequence suffix,
51 } catch (NumberFormatException e) {
52 LOG.info("Number format exception for " + idx, e);
53 } catch (ArrayIndexOutOfBoundsException e) {
54 LOG.info("Array out of bounds for " + idx, e);
60 public String toString() {
61 return name.toString();
65 public boolean equals(Object o) {
68 if (o == null || getClass() != o.getClass())
71 ZNodeName sequence = (ZNodeName) o;
73 if (!name.equals(sequence.name))
80 public int hashCode() {
81 return name.hashCode() + 37;
84 public int compareTo(ZNodeName that) {
85 int answer = this.prefix.compareTo(that.prefix);
87 int s1 = this.sequence;
88 int s2 = that.sequence;
89 if (s1 == -1 && s2 == -1) {
90 return this.name.compareTo(that.name);
92 answer = s1 == -1 ? 1 : s2 == -1 ? -1 : s1 - s2;
98 * Returns the name of the znode
100 public String getName() {
105 * Returns the sequence number
107 public int getZNodeName() {
112 * Returns the text prefix before the sequence number
114 public String getPrefix() {