NPMStub.java

package org.ow2.choreos.nodes;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.NoSuchElementException;
import java.util.Random;
import java.util.concurrent.atomic.AtomicInteger;

import org.ow2.choreos.nodes.datamodel.CloudNode;
import org.ow2.choreos.nodes.datamodel.NodeSpec;

public class NPMStub implements NodePoolManager {

    AtomicInteger counter = new AtomicInteger();
    List<CloudNode> nodes = new ArrayList<CloudNode>();

    @Override
    public CloudNode createNode(NodeSpec NodeSpec) throws NodeNotCreatedException {
        CloudNode n = new CloudNode();
        takesALong();
        String id = Integer.toString(counter.getAndIncrement());
        n.setId(id);
        nodes.add(n);
        return n;
    }

    private void takesALong() {
        // this delay improves tests reliability, since creating a node is a
        // time consuming task
        Random randomGenerator = new Random();
        int delta = randomGenerator.nextInt(20);
        int waitTime = 200 + delta;
        try {
            Thread.sleep(waitTime);
        } catch (InterruptedException e) {
            System.out.println("Exception at sleeping");
        }
    }

    @Override
    public List<CloudNode> getNodes() {
        return Collections.unmodifiableList(nodes);
    }

    @Override
    public CloudNode getNode(String nodeId) throws NodeNotFoundException {
        for (CloudNode node : nodes) {
            if (nodeId.equals(node.getId())) {
                return node;
            }
        }
        throw new NoSuchElementException();
    }

    @Override
    public void destroyNodes() throws NodeNotDestroyed {
        throw new UnsupportedOperationException();
    }

    @Override
    public void destroyNode(String nodeId) throws NodeNotDestroyed, NodeNotFoundException {
        throw new UnsupportedOperationException();
    }

    @Override
    public void updateNode(String nodeId) throws NodeNotUpdatedException, NodeNotFoundException {
        throw new UnsupportedOperationException();
    }

}