1 files changed, 118 insertions, 0 deletions
diff --git a/jar/src/main/java/org/onap/music/lockingservice/ZNodeName.java b/jar/src/main/java/org/onap/music/lockingservice/ZNodeName.java
new file mode 100644
index 00000000..0c190f14
--- /dev/null
+++ b/jar/src/main/java/org/onap/music/lockingservice/ZNodeName.java
@@ -0,0 +1,118 @@
+/*
+ * ============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;
+    }
+}