1 files changed, 0 insertions, 148 deletions
diff --git a/src/main/java/org/onap/music/main/DeadlockDetectionUtil.java b/src/main/java/org/onap/music/main/DeadlockDetectionUtil.java
deleted file mode 100644
index 4c9a74b7..00000000
--- a/src/main/java/org/onap/music/main/DeadlockDetectionUtil.java
+++ /dev/null
@@ -1,148 +0,0 @@
-/*
- * ============LICENSE_START==========================================
- * org.onap.music
- * ===================================================================
- *  Copyright (c) 2019 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.main;
-
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-
-public class DeadlockDetectionUtil {
-	private Map<String, Node> nodeList = null;
-	public enum OwnershipType {NONE, CREATED, ACQUIRED};
-
-	private class Node implements Comparable<Node> {
-		private String id;
-		private List<Node> links;
-		private boolean visited = false;
-		private boolean onStack = false;
-		
-		@Override
-		public String toString() {
-			StringBuffer sb = new StringBuffer();
-			for (Node link : links) sb.append(link.id);
-			return "Node [id=" + id + ", links=" + sb.toString() + ", visited=" + visited + ", onStack=" + onStack + "]";
-		}
-
-		public Node(String id) {
-			super();
-			this.id = id;
-			this.links = new ArrayList<Node>();
-		}
-
-		public List<Node> getLinks() {
-			return links;
-		}
-
-		public void addLink(Node link) {
-			this.links.add(link);
-		}
-		
-		public void removeLink(Node link) {
-			this.links.remove(link);
-		}
-
-		public boolean isVisited() {
-			return visited;
-		}
-
-		public boolean isOnStack() {
-			return onStack;
-		}
-
-		public void setVisited(boolean visited) {
-			this.visited = visited;
-		}
-
-		public void setOnStack(boolean onStack) {
-			this.onStack = onStack;
-		}
-
-		@Override
-		public int compareTo(Node arg0) {
-			return id.compareTo(arg0.id);
-		}
-	}
-	
-	public DeadlockDetectionUtil() {
-		this.nodeList = new HashMap<String, Node>();
-	}
-
-	public void listAllNodes() {
-		System.out.println("In DeadlockDetectionUtil: ");
-		for (String key : nodeList.keySet()) {
-			System.out.println("    " + key + " : " + nodeList.get(key));
-		}
-	}
-
-	public boolean checkForDeadlock(String resource, String owner, OwnershipType operation) {
-		setExisting(resource, owner, operation);
-
-		Node currentNode = null;
-		if (operation.equals(OwnershipType.ACQUIRED)) {
-			currentNode = nodeList.get("r" + resource);
-		} else if (operation.equals(OwnershipType.CREATED)) {
-			currentNode = nodeList.get("o" + owner);
-		}
-
-		boolean cycle = findCycle(currentNode);
-		return cycle;
-	}
-
-	private boolean findCycle(Node currentNode) {
-		if (currentNode==null) return false;
-		if (currentNode.isOnStack()) return true;
-		if (currentNode.isVisited()) return false;
-		currentNode.setOnStack(true);
-		currentNode.setVisited(true);
-		for (Node childNode : currentNode.getLinks()) {
-			if (findCycle(childNode)) return true;
-		}
-		currentNode.setOnStack(false);
-		return false;
-	}
-
-	public void setExisting(String resource, String owner, OwnershipType operation) {
-		String resourceKey = "r" + resource;
-		Node resourceNode = nodeList.get(resourceKey);
-		if (resourceNode==null) {
-			resourceNode = new Node(resourceKey);
-			nodeList.put(resourceKey, resourceNode);
-		}
-		
-		String ownerKey = "o" + owner;
-		Node ownerNode = nodeList.get(ownerKey);
-		if (ownerNode==null) {
-			ownerNode = new Node(ownerKey);
-			nodeList.put(ownerKey, ownerNode);
-		}
-		
-		if (operation.equals(OwnershipType.ACQUIRED)) {
-			resourceNode.addLink(ownerNode);
-			ownerNode.removeLink(resourceNode);
-		} else if (operation.equals(OwnershipType.CREATED)) {
-			ownerNode.addLink(resourceNode);
-			resourceNode.removeLink(ownerNode);
-		}
-	}
-
-}