Examples with AbstractRMNode org.ow2.proactive.resourcemanager.rmnode.AbstractRMNode used on opensource projects

Example 1 with AbstractRMNode

use of org.ow2.proactive.resourcemanager.rmnode.AbstractRMNode in project scheduling by ow2-proactive.

the class NodeSource method acquireNode.

/**
 * Acquires the existing node with specific url. The node have to be up and running.
 *
 * @param nodeUrl the url of the node
 * @param provider
 */
public BooleanWrapper acquireNode(String nodeUrl, Client provider) {
    if (toShutdown) {
        throw new AddingNodesException("[" + name + "] node " + nodeUrl + " adding request discarded because node source is shutting down");
    }
    // checking that client has a right to change this node source
    // if the provider is the administrator of the node source it always has this permission
    provider.checkPermission(providerPermission, provider + " is not authorized to add node " + nodeUrl + " to " + name);
    // lookup for a new Node
    int lookUpTimeout = PAResourceManagerProperties.RM_NODELOOKUP_TIMEOUT.getValueAsInt();
    Node nodeToAdd = null;
    try {
        logger.info("Looking up the node " + nodeUrl + " with " + lookUpTimeout + " ms timeout");
        nodeToAdd = lookupNode(nodeUrl, lookUpTimeout);
        logger.info("The node " + nodeUrl + " has been successfully looked up");
    } catch (Exception e) {
        logger.warn("Cannot look up the node " + nodeUrl + " within " + lookUpTimeout + " ms due to " + e.getMessage(), e);
        throw new AddingNodesException(e);
    }
    // node should be not null at this point...
    if (nodeToAdd == null) {
        throw new AddingNodesException("Cannot lookup node for unknown reason : " + nodeUrl);
    }
    // now checking if this node has been registered before in the node source
    if (downNodes.containsKey(nodeUrl)) {
        // it was registered but detected as down node,
        // so basically the node was restarted.
        // adding a new node and removing old one from the down list
        logger.debug("Removing existing node from down nodes list");
        BooleanWrapper result = rmcore.removeNodeFromCore(nodeUrl);
        if (result.getBooleanValue()) {
            if (logger.isDebugEnabled())
                logger.debug("[" + name + "] successfully removed node " + nodeUrl + " from the core");
            // just removing it from down nodes list
            removeNode(nodeUrl, provider);
        }
    } else if (nodes.containsKey(nodeUrl)) {
        // adding a node which exists in node source
        Node existingNode = nodes.get(nodeUrl);
        if (nodeToAdd.equals(existingNode)) {
            // don't do anything
            if (logger.isDebugEnabled())
                logger.debug("An attempt to add the same node twice " + nodeUrl + " - ignoring");
            return new BooleanWrapper(false);
        } else {
            // adding another node with the same url
            // replacing the old node by the new one
            logger.debug("Removing existing node from the RM without request propagation to the infrastructure manager");
            BooleanWrapper result = rmcore.removeNodeFromCore(nodeUrl);
            if (result.getBooleanValue()) {
                if (logger.isDebugEnabled())
                    logger.debug("[" + name + "] successfully removed node " + nodeUrl + " from the core");
                // removing it from the nodes list but don't propagate
                // the request the the infrastructure because the restarted node will be killed
                nodes.remove(nodeUrl);
            }
        }
    }
    // if any exception occurs in internalAddNode(node) do not add the node to the core
    RMDeployingNode deployingNode;
    try {
        deployingNode = internalAddNode(nodeToAdd);
    } catch (RMException e) {
        throw new AddingNodesException(e);
    }
    // we build the rmnode
    RMNode rmNode = buildRMNode(nodeToAdd, provider);
    if (deployingNode != null) {
        // inherit locking status from associated deploying node created before
        ((AbstractRMNode) rmNode).copyLockStatusFrom(deployingNode);
    }
    boolean isNodeAdded = rmcore.registerAvailableNode(rmNode).getBooleanValue();
    if (isNodeAdded) {
        // if the node is successfully added we can let it configure
        // asynchronously. It will then be seen as "configuring"
        rmcore.internalRegisterConfiguringNode(rmNode);
        return new BooleanWrapper(true);
    } else {
        return new BooleanWrapper(false);
    }
}