/**
* Set node-specific immutable settings and initialize components. This method must be called
* exactly once for each instance.
*
* <p>Scratch space configuration is checked and initialized.
*
* <p>State of an instance remains not configured if exception appears.
*
* @param node node to configure
* @param baseScratchConfiguration base scratch data space configuration, may be <code>null</code>
* if node does not provide a scratch space; not existing directory pointed by this
* configuration will be created
* @throws IllegalStateException when trying to reconfigure already configured instance
* @throws IllegalArgumentException when trying to configure node that is on different runtime/JVM
* @throws ConfigurationException when configuration appears to be wrong during node scratch space
* initialization (e.g. capabilities checking)
* @throws FileSystemException when VFS creation or scratch initialization fails
*/
public synchronized void configureNode(
Node node, BaseScratchSpaceConfiguration baseScratchConfiguration)
throws IllegalStateException, IllegalArgumentException, FileSystemException,
ConfigurationException {
logger.debug("Configuring node for Data Spaces");
checkNotConfigured();
if (!NodeFactory.isNodeLocal(node)) {
logger.error("Node to configure is not on the same runtime/JVM as a caller");
throw new IllegalArgumentException(
"Node to configure is not on the same runtime/JVM as a caller");
}
this.node = node;
try {
if (baseScratchConfiguration != null) {
if (baseScratchConfiguration.getUrl() == null) {
baseScratchConfiguration = startProActiveProviderServer(baseScratchConfiguration);
}
final NodeScratchSpace configuringScratchSpace = new VFSNodeScratchSpaceImpl();
configuringScratchSpace.init(node, baseScratchConfiguration);
this.nodeScratchSpace = configuringScratchSpace;
}
configured = true;
} finally {
if (!configured) {
tryCloseProviderServer();
// node scratch space is not configured (does not need close) for sure
}
}
logger.debug("Node configured for Data Spaces");
}
/**
* Returns the alive Nodes accessible by the RM
*
* @return list of ProActive Nodes
*/
public List<Node> listAliveNodes() throws Exception {
ArrayList<Node> nodes = new ArrayList<>();
Set<String> urls = getResourceManager().listAliveNodeUrls();
for (String url : urls) {
nodes.add(NodeFactory.getNode(url));
}
return nodes;
}
/**
* Pings remote nodes and returns distances to hosts where these nodes are located.
*
* @param nodes to ping
* @return distances map to hosts where these nodes are located
*/
public HashMap<InetAddress, Long> ping(NodeSet nodes) {
HashMap<InetAddress, Long> results = new HashMap<>();
for (Node node : nodes) {
try {
InetAddress current = NodeFactory.getDefaultNode().getVMInformation().getInetAddress();
InetAddress nodeAddress = node.getVMInformation().getInetAddress();
if (current.equals(nodeAddress)) {
// nodes on the same host
results.put(nodeAddress, new Long(0));
} else {
results.put(nodeAddress, pingNode(node));
}
} catch (NodeException e) {
}
}
return results;
}
@Override
protected Node createLocalNode(String nodeName) {
Node localNode = null;
try {
localNode = NodeFactory.createLocalNode(nodeName, false, null, null);
if (localNode == null) {
System.out.println("The node returned by the NodeFactory is null");
System.err.println(RMNodeStarter.ExitStatus.RMNODE_NULL.description);
System.exit(RMNodeStarter.ExitStatus.RMNODE_NULL.exitCode);
}
// this property is set to be able to which node source this node must
// be added once added to the RM
localNode.setProperty(VIRMNodeStarter.HOLDING_VM_KEY, this.holdingVM);
} catch (Throwable t) {
System.out.println("Unable to create the local node " + nodeName);
t.printStackTrace();
System.exit(RMNodeStarter.ExitStatus.RMNODE_ADD_ERROR.exitCode);
}
return localNode;
}
