Examples with NodeSet org.ow2.proactive.utils.NodeSet used on opensource projects

Example 11 with NodeSet

use of org.ow2.proactive.utils.NodeSet in project scheduling by ow2-proactive.

the class DynamicSelectionScriptTest method action.

@Test
public void action() throws Exception {
    ResourceManager resourceManager = rmHelper.getResourceManager();
    int nsSize = rmHelper.createNodeSource("DynamicSelectionScriptTest");
    String node1Name = "node1";
    String node2Name = "node2";
    HashMap<String, String> vmProperties = new HashMap<>();
    String vmPropKey = "myProperty";
    String vmPropValue = "myValue";
    vmProperties.put(vmPropKey, vmPropValue);
    TestNode node1 = rmHelper.createNode(node1Name, vmProperties);
    testNodes.add(node1);
    String node1URL = node1.getNode().getNodeInformation().getURL();
    resourceManager.addNode(node1URL);
    // wait node adding event
    rmHelper.waitForNodeEvent(RMEventType.NODE_ADDED, node1URL);
    // wait for the node to be in free state
    rmHelper.waitForAnyNodeEvent(RMEventType.NODE_STATE_CHANGED);
    // create the dynamic selection script object
    SelectionScript sScript = new SelectionScript(new File(vmPropSelectionScriptpath.toURI()), new String[] { vmPropKey, vmPropValue }, true);
    log("Test 1");
    NodeSet nodes = resourceManager.getAtMostNodes(1, sScript);
    // wait node selection
    PAFuture.waitFor(nodes);
    assertEquals(1, nodes.size());
    assertEquals(nsSize, resourceManager.getState().getFreeNodesNumber());
    assertEquals(node1URL, nodes.get(0).getNodeInformation().getURL());
    RMNodeEvent evt = rmHelper.waitForNodeEvent(RMEventType.NODE_STATE_CHANGED, node1URL);
    assertEquals(NodeState.BUSY, evt.getNodeState());
    resourceManager.releaseNode(nodes.get(0));
    // wait for node free event
    evt = rmHelper.waitForNodeEvent(RMEventType.NODE_STATE_CHANGED, node1URL);
    assertEquals(NodeState.FREE, evt.getNodeState());
    log("Test 2");
    nodes = resourceManager.getAtMostNodes(3, sScript);
    // wait node selection
    PAFuture.waitFor(nodes);
    assertEquals(1, nodes.size());
    assertEquals(nsSize, resourceManager.getState().getFreeNodesNumber());
    assertEquals(node1URL, nodes.get(0).getNodeInformation().getURL());
    // wait for node busy event
    evt = rmHelper.waitForNodeEvent(RMEventType.NODE_STATE_CHANGED, node1URL);
    assertEquals(NodeState.BUSY, evt.getNodeState());
    resourceManager.releaseNode(nodes.get(0));
    // wait for node free event
    evt = rmHelper.waitForNodeEvent(RMEventType.NODE_STATE_CHANGED, node1URL);
    assertEquals(NodeState.FREE, evt.getNodeState());
    log("Test 3");
    // add a second with JVM env var
    TestNode node2 = rmHelper.createNode(node2Name, vmProperties);
    testNodes.add(node2);
    String node2URL = node2.getNode().getNodeInformation().getURL();
    resourceManager.addNode(node2URL);
    // wait node adding event
    rmHelper.waitForNodeEvent(RMEventType.NODE_ADDED, node2URL);
    // wait for the node to be in free state
    rmHelper.waitForAnyNodeEvent(RMEventType.NODE_STATE_CHANGED);
    nodes = resourceManager.getAtMostNodes(3, sScript);
    // wait node selection
    PAFuture.waitFor(nodes);
    assertEquals(2, nodes.size());
    assertEquals(nsSize, resourceManager.getState().getFreeNodesNumber());
    // wait for nodes busy event
    evt = rmHelper.waitForNodeEvent(RMEventType.NODE_STATE_CHANGED, node1URL);
    assertEquals(NodeState.BUSY, evt.getNodeState());
    evt = rmHelper.waitForNodeEvent(RMEventType.NODE_STATE_CHANGED, node2URL);
    assertEquals(NodeState.BUSY, evt.getNodeState());
    resourceManager.releaseNodes(nodes);
    // wait for node free event
    evt = rmHelper.waitForNodeEvent(RMEventType.NODE_STATE_CHANGED, node1URL);
    assertEquals(NodeState.FREE, evt.getNodeState());
    evt = rmHelper.waitForNodeEvent(RMEventType.NODE_STATE_CHANGED, node2URL);
    assertEquals(NodeState.FREE, evt.getNodeState());
    log("Test 4");
    resourceManager.removeNode(node1URL, true);
    resourceManager.removeNode(node2URL, true);
    // wait for node removed event
    rmHelper.waitForNodeEvent(RMEventType.NODE_REMOVED, node2URL);
    rmHelper.waitForNodeEvent(RMEventType.NODE_REMOVED, node1URL);
    nodes = resourceManager.getAtMostNodes(3, sScript);
    // wait node selection
    PAFuture.waitFor(nodes);
    assertEquals(0, nodes.size());
    assertEquals(nsSize, resourceManager.getState().getFreeNodesNumber());
    log("Test 5");
    // create the bad dynamic selection script object
    SelectionScript badScript = new SelectionScript(new File(badSelectionScriptpath.toURI()), new String[] {}, true);
    nodes = resourceManager.getAtMostNodes(3, badScript);
    // wait node selection
    PAFuture.waitFor(nodes);
    assertEquals(0, nodes.size());
    assertEquals(nsSize, resourceManager.getState().getFreeNodesNumber());
    log("Test 6");
    // create the dynamic selection script object that doesn't define 'selected'
    SelectionScript noSelectedScript = new SelectionScript(new File(withoutSelectedSelectionScriptpath.toURI()), new String[] {}, true);
    nodes = resourceManager.getAtMostNodes(3, noSelectedScript);
    // wait node selection
    PAFuture.waitFor(nodes);
    assertEquals(0, nodes.size());
    assertEquals(nsSize, resourceManager.getState().getFreeNodesNumber());
    log("Test 7");
    // Checking the dynamicity of the node (period during which the dynamic characteristics do not change).
    // It sets to 10 secs for testing configuration.
    // So first run the dynamic script that fails checking if the file exist
    // Then create a file and call getNodes again. It must return 0 nodes.
    // Wait for 10 secs and call getNodes again. The script must be executed now
    // and we should get some nodes.
    final String FILE_NAME = System.getProperty("java.io.tmpdir") + "/dynamicity.selection";
    if (new File(FILE_NAME).exists()) {
        new File(FILE_NAME).delete();
    }
    SelectionScript fileCheck = new SelectionScript(new File(fileCheckScriptPath.toURI()), new String[] { FILE_NAME }, true);
    log("The dynamic script checking is file exists must fail " + FILE_NAME);
    nodes = resourceManager.getAtMostNodes(1, fileCheck);
    assertEquals(0, nodes.size());
    log("Creating the file " + FILE_NAME);
    new File(FILE_NAME).createNewFile();
    log("The dynamic script checking is file exists must not be executed " + FILE_NAME);
    nodes = resourceManager.getAtMostNodes(1, fileCheck);
    assertEquals(0, nodes.size());
    Thread.sleep(10000);
    log("The dynamic script checking is file exists must pass " + FILE_NAME);
    nodes = resourceManager.getAtMostNodes(1, fileCheck);
    assertEquals(1, nodes.size());
    new File(FILE_NAME).delete();
}

Example 12 with NodeSet

use of org.ow2.proactive.utils.NodeSet in project scheduling by ow2-proactive.

the class SelectionWithSeveralScriptsTest method action.

@Test
public void action() throws Exception {
    ResourceManager resourceManager = rmHelper.getResourceManager();
    String nodeSourceName = "selection-several-ns";
    resourceManager.createNodeSource(nodeSourceName, DefaultInfrastructureManager.class.getName(), null, StaticPolicy.class.getName(), new Object[] { "ALL", "ALL" }, NODES_NOT_RECOVERABLE).getBooleanValue();
    rmHelper.waitForNodeSourceEvent(RMEventType.NODESOURCE_CREATED, nodeSourceName);
    String node1Name = "node-sel-1";
    String node2Name = "node-sel-2";
    String node3Name = "node-sel-3";
    // ---------------------------------------------------
    // create a first node with the two VM properties
    // ---------------------------------------------------
    HashMap<String, String> vmTwoProperties = new HashMap<>();
    String vmPropKey1 = "myProperty1";
    String vmPropValue1 = "myValue1";
    vmTwoProperties.put(vmPropKey1, vmPropValue1);
    String vmPropKey2 = "myProperty2";
    String vmPropValue2 = "myValue2";
    vmTwoProperties.put(vmPropKey2, vmPropValue2);
    TestNode node1 = rmHelper.createNode(node1Name, vmTwoProperties);
    testNodes.add(node1);
    String node1URL = node1.getNode().getNodeInformation().getURL();
    resourceManager.addNode(node1URL, nodeSourceName);
    // wait node adding event
    rmHelper.waitForNodeEvent(RMEventType.NODE_ADDED, node1URL);
    // wait for the nodes to be in free state
    rmHelper.waitForAnyNodeEvent(RMEventType.NODE_STATE_CHANGED);
    Assert.assertEquals(1, resourceManager.listAliveNodeUrls().size());
    // --------------------------------------------------
    // create a second node with only the first VM property
    // ---------------------------------------------------
    HashMap<String, String> vmProp1 = new HashMap<>();
    vmProp1.put(vmPropKey1, vmPropValue1);
    TestNode node2 = rmHelper.createNode(node2Name, vmProp1);
    testNodes.add(node2);
    String node2URL = node2.getNode().getNodeInformation().getURL();
    resourceManager.addNode(node2URL, nodeSourceName);
    // wait node adding event
    rmHelper.waitForNodeEvent(RMEventType.NODE_ADDED, node2URL);
    // wait for the nodes to be in free state
    rmHelper.waitForAnyNodeEvent(RMEventType.NODE_STATE_CHANGED);
    Assert.assertEquals(2, resourceManager.listAliveNodeUrls().size());
    // --------------------------------------------------
    // create a third node with only the second VM property
    // ---------------------------------------------------
    HashMap<String, String> vmProp2 = new HashMap<>();
    vmProp1.put(vmPropKey2, vmPropValue2);
    TestNode node3 = rmHelper.createNode(node3Name, vmProp2);
    testNodes.add(node3);
    String node3URL = node3.getNode().getNodeInformation().getURL();
    resourceManager.addNode(node3URL, nodeSourceName);
    // wait node adding event
    rmHelper.waitForNodeEvent(RMEventType.NODE_ADDED, node3URL);
    // wait for the nodes to be in free state
    rmHelper.waitForAnyNodeEvent(RMEventType.NODE_STATE_CHANGED);
    Assert.assertEquals(3, resourceManager.listAliveNodeUrls().size());
    // create the static selection script object that check vm prop1
    SelectionScript sScript1 = new SelectionScript(new File(vmPropSelectionScriptpath.toURI()), new String[] { vmPropKey1, vmPropValue1 }, true);
    // create the static selection script object prop2
    SelectionScript sScript2 = new SelectionScript(new File(vmPropSelectionScriptpath.toURI()), new String[] { vmPropKey2, vmPropValue2 }, false);
    log("Test 1");
    ArrayList<SelectionScript> scriptsList = new ArrayList<>();
    scriptsList.add(sScript1);
    scriptsList.add(sScript2);
    NodeSet nodes = resourceManager.getAtMostNodes(1, scriptsList, null);
    // wait node selection
    PAFuture.waitFor(nodes);
    assertEquals(1, nodes.size());
    assertEquals(node1URL, nodes.get(0).getNodeInformation().getURL());
    // wait for node busy event
    RMNodeEvent evt = rmHelper.waitForNodeEvent(RMEventType.NODE_STATE_CHANGED, node1URL);
    assertEquals(NodeState.BUSY, evt.getNodeState());
    assertEquals(2, resourceManager.getState().getFreeNodesNumber());
    resourceManager.releaseNodes(nodes);
    // wait for node free event
    evt = rmHelper.waitForNodeEvent(RMEventType.NODE_STATE_CHANGED, node1URL);
    assertEquals(NodeState.FREE, evt.getNodeState());
    assertEquals(3, resourceManager.getState().getFreeNodesNumber());
    log("Test 2");
    nodes = resourceManager.getAtMostNodes(3, scriptsList, nodes);
    // wait node selection
    PAFuture.waitFor(nodes);
    assertEquals(0, nodes.size());
    assertEquals(3, resourceManager.getState().getFreeNodesNumber());
}

Example 13 with NodeSet

use of org.ow2.proactive.utils.NodeSet in project scheduling by ow2-proactive.

the class UnauthorizedSelectionScriptTest method action.

@Test
public void action() throws Exception {
    String rmconf = new File(PAResourceManagerProperties.getAbsolutePath(getClass().getResource("/functionaltests/config/rm-authorized-selection-script.ini").getFile())).getAbsolutePath();
    rmHelper.startRM(rmconf);
    ResourceManager rm = this.rmHelper.getResourceManager();
    this.rmHelper.createNodeSource("Dummy", 1);
    log("Test 1 - unautorized script");
    Criteria criteria = new Criteria(1);
    URL vmPropSelectionScriptpath = this.getClass().getResource("dummySelectionScript.js");
    List<SelectionScript> scripts = new ArrayList<>();
    scripts.add(new SelectionScript(new File(vmPropSelectionScriptpath.toURI()), null, true));
    criteria.setScripts(scripts);
    try {
        NodeSet ns = rm.getNodes(criteria);
        System.out.println("Number of nodes matched " + ns.size());
        fail("Executed unauthorized selection script");
    } catch (SecurityException ex) {
        log("Test 1 - passed");
    }
    log("Test 2 - authorized script");
    String authorizedScriptPath = PAResourceManagerProperties.RM_HOME.getValueAsString() + "/samples/scripts/selection/checkPhysicalFreeMem.js";
    scripts = new ArrayList<>();
    scripts.add(new SelectionScript(new File(authorizedScriptPath), new String[] { "1" }, true));
    criteria.setScripts(scripts);
    NodeSet ns = rm.getNodes(criteria);
    System.out.println("Number of nodes matched " + ns.size());
    assertEquals(1, ns.size());
    log("Test 2 - passed");
}

Example 14 with NodeSet

use of org.ow2.proactive.utils.NodeSet in project scheduling by ow2-proactive.

the class LocalSelectionTest method getNodesAndReleaseThem.

private void getNodesAndReleaseThem(int number, TopologyDescriptor descriptor, int expectedReceived, int expectedExtraNodesSize) {
    Criteria c = new Criteria(number);
    c.setTopology(descriptor);
    NodeSet ns = resourceManager.getNodes(c);
    Assert.assertEquals(expectedReceived, ns.size());
    Collection<Node> extra = ns.getExtraNodes();
    if (expectedExtraNodesSize == 0) {
        Assert.assertNull(extra);
    } else {
        Assert.assertEquals(expectedExtraNodesSize, extra.size());
    }
    resourceManager.releaseNodes(ns).getBooleanValue();
}

Example 15 with NodeSet

use of org.ow2.proactive.utils.NodeSet in project scheduling by ow2-proactive.

the class SelectionTest method action.

@Test
public void action() throws Exception {
    String currentHost = System.getenv("HOSTNAME");
    // checking if properties distantHost and neighborHost are defined
    String distantHost = System.getProperty("distantHost");
    String neighborHost = System.getProperty("neighborHost");
    if (distantHost != null && !distantHost.equals("${distantHost}") && neighborHost != null && !neighborHost.equals("${neighborHost}")) {
        String rmHome = System.getProperty("pa.rm.home");
        String rmCredPath = rmHome + "/config/authentication/rm.cred";
        String javaExec = System.getenv("JAVA_HOME") + "/bin/java";
        // properties are defined, trying to deploy nodes to these hosts
        BooleanWrapper result = rmHelper.getResourceManager().createNodeSource("remote", SSHInfrastructure.class.getName(), new Object[] { // ssh options
        "", // java executable path
        javaExec, // rmHelper distrib path
        rmHome, // node lookup timeout
        "30000", // attempts
        "2", // os
        "Linux", // java options
        "", // rmHelper credential
        FileToBytesConverter.convertFileToByteArray(new File(rmCredPath)), (distantHost + " 2\n" + neighborHost).getBytes() }, StaticPolicy.class.getName(), null, NODES_NOT_RECOVERABLE);
        if (result.getBooleanValue()) {
            rmHelper.waitForAnyNodeEvent(RMEventType.NODE_ADDED);
            rmHelper.waitForAnyNodeEvent(RMEventType.NODE_ADDED);
            rmHelper.waitForAnyNodeEvent(RMEventType.NODE_ADDED);
            // wait for the nodes to be in free state
            rmHelper.waitForAnyNodeEvent(RMEventType.NODE_STATE_CHANGED);
            rmHelper.waitForAnyNodeEvent(RMEventType.NODE_STATE_CHANGED);
            rmHelper.waitForAnyNodeEvent(RMEventType.NODE_STATE_CHANGED);
        }
    // we are good - all remote nodes registered
    } else {
        // no parameters provided
        RMTHelper.log("Nothing to do. Set up distantHost & neighborHost parameters.");
        return;
    }
    // creating the selection script object
    SelectionScript script = new SelectionScript(new File(vmPropSelectionScriptpath), new String[] { this.vmPropKey1, this.vmPropValue1 }, true);
    List<SelectionScript> scriptList = new LinkedList<>();
    scriptList.add(script);
    ResourceManager resourceManager = rmHelper.getResourceManager();
    String node1 = "node1";
    // a node with the VM properties
    HashMap<String, String> vmProperties = new HashMap<>();
    vmProperties.put(this.vmPropKey1, this.vmPropValue1);
    testNode = rmHelper.createNode(node1, vmProperties);
    String node1URL = testNode.getNode().getNodeInformation().getURL();
    resourceManager.addNode(node1URL, NodeSource.DEFAULT);
    // wait node adding event
    rmHelper.waitForNodeEvent(RMEventType.NODE_ADDED, node1URL);
    // wait for the nodes to be in free state
    rmHelper.waitForAnyNodeEvent(RMEventType.NODE_STATE_CHANGED);
    // so now we have 9 node in total
    // 6 local nodes (5 default, 1 marked with property)
    // 2 nodes on distant host
    // 1 node on neighbor host
    Assert.assertEquals(9, resourceManager.getState().getFreeNodesNumber());
    // checking TopologyDescriptor.ARBITRARY
    NodeSet ns = resourceManager.getAtMostNodes(1, TopologyDescriptor.ARBITRARY, null, null);
    Assert.assertEquals(1, ns.size());
    resourceManager.releaseNodes(ns).getBooleanValue();
    ns = resourceManager.getAtMostNodes(8, TopologyDescriptor.ARBITRARY, null, null);
    Assert.assertEquals(8, ns.size());
    resourceManager.releaseNodes(ns).getBooleanValue();
    ns = resourceManager.getAtMostNodes(100, TopologyDescriptor.ARBITRARY, null, null);
    Assert.assertEquals(9, ns.size());
    resourceManager.releaseNodes(ns).getBooleanValue();
    ns = resourceManager.getAtMostNodes(100, TopologyDescriptor.ARBITRARY, scriptList, null);
    Assert.assertEquals(1, ns.size());
    resourceManager.releaseNodes(ns).getBooleanValue();
    // checking TopologyDescriptor.BEST_PROXIMITY
    ns = resourceManager.getAtMostNodes(1, TopologyDescriptor.BEST_PROXIMITY, null, null);
    Assert.assertEquals(1, ns.size());
    resourceManager.releaseNodes(ns).getBooleanValue();
    ns = resourceManager.getAtMostNodes(9, TopologyDescriptor.BEST_PROXIMITY, null, null);
    Assert.assertEquals(9, ns.size());
    resourceManager.releaseNodes(ns).getBooleanValue();
    ns = resourceManager.getAtMostNodes(100, TopologyDescriptor.BEST_PROXIMITY, null, null);
    Assert.assertEquals(9, ns.size());
    resourceManager.releaseNodes(ns).getBooleanValue();
    // Node pivotNode = null;
    ns = resourceManager.getAtMostNodes(6, TopologyDescriptor.BEST_PROXIMITY, null, null);
    Assert.assertEquals(6, ns.size());
    for (Node node : ns) {
        // pivotNode = node;
        if (!node.getNodeInformation().getURL().contains(currentHost)) {
            Assert.assertTrue("All nodes have to be from " + currentHost, false);
        }
    }
    resourceManager.releaseNodes(ns).getBooleanValue();
    ns = resourceManager.getAtMostNodes(7, TopologyDescriptor.BEST_PROXIMITY, null, null);
    Assert.assertEquals(7, ns.size());
    for (Node node : ns) {
        if (node.getNodeInformation().getURL().contains(distantHost)) {
            Assert.assertTrue("Node from distant host selected", false);
        }
    }
    resourceManager.releaseNodes(ns).getBooleanValue();
    // pivot scenario
    // List<Node> pivot = new LinkedList<Node>();
    // pivot.add(pivotNode);
    // ns = resourceManager.getAtMostNodes(6,
    // new BestProximityDescriptor(BestProximityDescriptor.MAX, pivot), null, null);
    // Assert.assertEquals(6, ns.size());
    // for (Node node : ns) {
    // if (node.getNodeInformation().getURL().equals(pivotNode.getNodeInformation().getURL())) {
    // Assert.assertTrue("Pivot must not be in results", false);
    // }
    // if (node.getNodeInformation().getURL().contains(distantHost)) {
    // Assert.assertTrue("Node from distant host selected", false);
    // }
    // }
    // resourceManager.releaseNodes(ns).getBooleanValue();
    // 
    // ns = resourceManager.getAtMostNodes(7,
    // new BestProximityDescriptor(BestProximityDescriptor.MAX, pivot), null, null);
    // Assert.assertEquals(7, ns.size());
    // for (Node node : ns) {
    // if (node.getNodeInformation().getURL().equals(pivotNode.getNodeInformation().getURL())) {
    // Assert.assertTrue("Pivot must not be in results", false);
    // }
    // }
    // resourceManager.releaseNodes(ns).getBooleanValue();
    // checking TopologyDescriptor.ThresholdProximityDescriptor
    ns = resourceManager.getAtMostNodes(1, new ThresholdProximityDescriptor(Long.MAX_VALUE), null, null);
    Assert.assertEquals(1, ns.size());
    resourceManager.releaseNodes(ns).getBooleanValue();
    ns = resourceManager.getAtMostNodes(9, new ThresholdProximityDescriptor(Long.MAX_VALUE), null, null);
    Assert.assertEquals(9, ns.size());
    resourceManager.releaseNodes(ns).getBooleanValue();
    ns = resourceManager.getAtMostNodes(100, new ThresholdProximityDescriptor(Long.MAX_VALUE), null, null);
    Assert.assertEquals(9, ns.size());
    resourceManager.releaseNodes(ns).getBooleanValue();
    // getting information about topology
    Topology topology = resourceManager.getTopology();
    Assert.assertEquals(3, topology.getHosts().size());
    // looking for distances consistency
    Long current2neighborDistance = topology.getDistance(currentHost, neighborHost);
    Long current2distantDistance = topology.getDistance(currentHost, distantHost);
    Long distant2neightborDistance = topology.getDistance(neighborHost, distantHost);
    if (current2neighborDistance == null || current2distantDistance == null) {
        Assert.assertTrue("Please put full host names to the parameters", false);
    }
    if (current2neighborDistance > current2distantDistance) {
        Assert.assertTrue("Distant host is close to current than neighbor according to the topology", false);
    }
    System.out.println("Distance between " + currentHost + " and " + neighborHost + " is " + current2neighborDistance);
    System.out.println("Distance between " + currentHost + " and " + distantHost + " is " + current2distantDistance);
    System.out.println("Distance between " + neighborHost + " and " + distantHost + " is " + distant2neightborDistance);
    long maxThreshold = Math.max(current2neighborDistance, Math.max(current2distantDistance, distant2neightborDistance));
    ns = resourceManager.getAtMostNodes(100, new ThresholdProximityDescriptor(current2neighborDistance - 1), null, null);
    Assert.assertEquals(6, ns.size());
    resourceManager.releaseNodes(ns).getBooleanValue();
    ns = resourceManager.getAtMostNodes(100, new ThresholdProximityDescriptor(current2neighborDistance), null, null);
    Assert.assertEquals(7, ns.size());
    resourceManager.releaseNodes(ns).getBooleanValue();
    ns = resourceManager.getAtMostNodes(100, new ThresholdProximityDescriptor(maxThreshold - 1), null, null);
    for (Node node : ns) {
        if (node.getNodeInformation().getURL().contains(distantHost)) {
            Assert.assertTrue("Node from distant host selected", false);
        }
    }
    Assert.assertEquals(7, ns.size());
    resourceManager.releaseNodes(ns).getBooleanValue();
    ns = resourceManager.getAtMostNodes(10, new ThresholdProximityDescriptor(maxThreshold), null, null);
    Assert.assertEquals(9, ns.size());
    resourceManager.releaseNodes(ns).getBooleanValue();
    // pivot scenario
    // ns = resourceManager.getAtMostNodes(1, new ThresholdProximityDescriptor(0, pivot), null, null);
    // Assert.assertEquals(1, ns.size());
    // for (Node node : ns) {
    // if (node.getNodeInformation().getURL().equals(pivotNode.getNodeInformation().getURL())) {
    // Assert.assertTrue("Pivot must not be in results", false);
    // }
    // if (node.getNodeInformation().getURL().contains(distantHost) ||
    // node.getNodeInformation().getURL().contains(neighborHost)) {
    // Assert.assertTrue("Incorrect node selected", false);
    // }
    // }
    // resourceManager.releaseNodes(ns).getBooleanValue();
    // 
    // ns = resourceManager.getAtMostNodes(6, new ThresholdProximityDescriptor(current2neighborDistance,
    // pivot), null, null);
    // Assert.assertEquals(6, ns.size());
    // for (Node node : ns) {
    // if (node.getNodeInformation().getURL().equals(pivotNode.getNodeInformation().getURL())) {
    // Assert.assertTrue("Pivot must not be in results", false);
    // }
    // if (node.getNodeInformation().getURL().contains(distantHost)) {
    // Assert.assertTrue("Node from distant host selected", false);
    // }
    // }
    // resourceManager.releaseNodes(ns).getBooleanValue();
    // checking TopologyDescriptor.SINGLE_HOST
    ns = resourceManager.getAtMostNodes(1, TopologyDescriptor.SINGLE_HOST, null, null);
    Assert.assertEquals(1, ns.size());
    resourceManager.releaseNodes(ns).getBooleanValue();
    ns = resourceManager.getAtMostNodes(9, TopologyDescriptor.SINGLE_HOST, null, null);
    Assert.assertEquals(6, ns.size());
    resourceManager.releaseNodes(ns).getBooleanValue();
    ns = resourceManager.getAtMostNodes(100, TopologyDescriptor.SINGLE_HOST, null, null);
    Assert.assertEquals(6, ns.size());
    resourceManager.releaseNodes(ns).getBooleanValue();
    ns = resourceManager.getAtMostNodes(100, TopologyDescriptor.SINGLE_HOST, scriptList, null);
    Assert.assertEquals(1, ns.size());
    resourceManager.releaseNodes(ns).getBooleanValue();
    // checking TopologyDescriptor.SINGLE_HOST_EXCLUSIVE
    ns = resourceManager.getAtMostNodes(1, TopologyDescriptor.SINGLE_HOST_EXCLUSIVE, null, null);
    Assert.assertEquals(1, ns.size());
    Assert.assertEquals(null, ns.getExtraNodes());
    if (!ns.get(0).getNodeInformation().getURL().contains(neighborHost)) {
        Assert.assertTrue("Neighbor host shold be selected", false);
    }
    resourceManager.releaseNodes(ns).getBooleanValue();
    ns = resourceManager.getAtMostNodes(9, TopologyDescriptor.SINGLE_HOST_EXCLUSIVE, null, null);
    Assert.assertEquals(6, ns.size());
    Assert.assertEquals(null, ns.getExtraNodes());
    resourceManager.releaseNodes(ns).getBooleanValue();
    ns = resourceManager.getAtMostNodes(2, TopologyDescriptor.SINGLE_HOST_EXCLUSIVE, null, null);
    Assert.assertEquals(2, ns.size());
    Assert.assertEquals(null, ns.getExtraNodes());
    resourceManager.releaseNodes(ns).getBooleanValue();
    ns = resourceManager.getAtMostNodes(3, TopologyDescriptor.SINGLE_HOST_EXCLUSIVE, null, null);
    Assert.assertEquals(3, ns.size());
    Assert.assertEquals(3, ns.getExtraNodes().size());
    resourceManager.releaseNodes(ns).getBooleanValue();
    ns = resourceManager.getAtMostNodes(100, TopologyDescriptor.SINGLE_HOST_EXCLUSIVE, scriptList, null);
    // no hosts matched selection script
    Assert.assertEquals(0, ns.size());
    resourceManager.releaseNodes(ns).getBooleanValue();
    ns = resourceManager.getAtMostNodes(100, TopologyDescriptor.SINGLE_HOST_EXCLUSIVE, null, null);
    // return the host with max capacity
    Assert.assertEquals(6, ns.size());
    resourceManager.releaseNodes(ns).getBooleanValue();
    // checking TopologyDescriptor.MULTIPLE_HOSTS_EXCLUSIVE
    ns = resourceManager.getAtMostNodes(1, TopologyDescriptor.MULTIPLE_HOSTS_EXCLUSIVE, null, null);
    Assert.assertEquals(1, ns.size());
    Assert.assertEquals(null, ns.getExtraNodes());
    resourceManager.releaseNodes(ns).getBooleanValue();
    ns = resourceManager.getAtMostNodes(2, TopologyDescriptor.MULTIPLE_HOSTS_EXCLUSIVE, null, null);
    Assert.assertEquals(2, ns.size());
    Assert.assertEquals(null, ns.getExtraNodes());
    resourceManager.releaseNodes(ns).getBooleanValue();
    ns = resourceManager.getAtMostNodes(3, TopologyDescriptor.MULTIPLE_HOSTS_EXCLUSIVE, null, null);
    Assert.assertEquals(3, ns.size());
    Assert.assertEquals(null, ns.getExtraNodes());
    resourceManager.releaseNodes(ns).getBooleanValue();
    ns = resourceManager.getAtMostNodes(9, TopologyDescriptor.MULTIPLE_HOSTS_EXCLUSIVE, null, null);
    Assert.assertEquals(9, ns.size());
    Assert.assertEquals(null, ns.getExtraNodes());
    resourceManager.releaseNodes(ns).getBooleanValue();
    ns = resourceManager.getAtMostNodes(8, TopologyDescriptor.MULTIPLE_HOSTS_EXCLUSIVE, null, null);
    // current + distant has to be selected
    Assert.assertEquals(8, ns.size());
    Assert.assertEquals(null, ns.getExtraNodes());
    resourceManager.releaseNodes(ns).getBooleanValue();
    ns = resourceManager.getAtMostNodes(7, TopologyDescriptor.MULTIPLE_HOSTS_EXCLUSIVE, null, null);
    // current + neighbor has to be selected
    Assert.assertEquals(7, ns.size());
    Assert.assertEquals(null, ns.getExtraNodes());
    resourceManager.releaseNodes(ns).getBooleanValue();
    ns = resourceManager.getAtMostNodes(100, TopologyDescriptor.MULTIPLE_HOSTS_EXCLUSIVE, scriptList, null);
    // selection script specified => no such set
    Assert.assertEquals(0, ns.size());
    resourceManager.releaseNodes(ns).getBooleanValue();
    ns = resourceManager.getAtMostNodes(100, TopologyDescriptor.MULTIPLE_HOSTS_EXCLUSIVE, null, null);
    // get max possible capacity
    Assert.assertEquals(9, ns.size());
    resourceManager.releaseNodes(ns).getBooleanValue();
    // checking TopologyDescriptor.ONE_NODE_PER_HOST_EXCLUSIVE
    ns = resourceManager.getAtMostNodes(1, TopologyDescriptor.DIFFERENT_HOSTS_EXCLUSIVE, null, null);
    Assert.assertEquals(1, ns.size());
    Assert.assertEquals(null, ns.getExtraNodes());
    resourceManager.releaseNodes(ns).getBooleanValue();
    ns = resourceManager.getAtMostNodes(2, TopologyDescriptor.DIFFERENT_HOSTS_EXCLUSIVE, null, null);
    Assert.assertEquals(2, ns.size());
    Assert.assertEquals(1, ns.getExtraNodes().size());
    resourceManager.releaseNodes(ns).getBooleanValue();
    ns = resourceManager.getAtMostNodes(3, TopologyDescriptor.DIFFERENT_HOSTS_EXCLUSIVE, null, null);
    Assert.assertEquals(3, ns.size());
    Assert.assertEquals(6, ns.getExtraNodes().size());
    resourceManager.releaseNodes(ns).getBooleanValue();
    ns = resourceManager.getAtMostNodes(4, TopologyDescriptor.DIFFERENT_HOSTS_EXCLUSIVE, null, null);
    Assert.assertEquals(3, ns.size());
    Assert.assertEquals(6, ns.getExtraNodes().size());
    resourceManager.releaseNodes(ns).getBooleanValue();
    PAFuture.waitFor(resourceManager.removeNodeSource("remote", true));
}