/**
* Execute {@code HelloWorld} example on the grid.
*
* @param args Command line arguments, none required but if provided first one should point to the
* Spring XML configuration file. See {@code "examples/config/"} for configuration file
* examples.
* @throws GridException If example execution failed.
*/
public static void main(String[] args) throws GridException {
if (args.length == 0) {
G.start();
} else {
G.start(args[0]);
}
try {
// Broadcast this message to all nodes using GridClosure.
broadcastWordsClosure("Broadcasting This Message To All Nodes!");
// Print individual words from this phrase on different nodes
// using GridClosure
spreadWordsClosure("Print Worlds Functional Style!");
// Print this message using anonymous runnable object.
unicastWordsRunnable("Printing This Message From Runnable!");
// Split the message into words and pass them as arguments
// for remote execution of Callable objects.
countLettersCallable("Letter Count With Callable!");
// Split the message into words and pass them as arguments
// for remote execution of GridClosure objects.
countLettersClosure("Letter Count With Closure!");
// Split the message into words and pass them as arguments
// for remote execution of GridClosure objects and
// then aggregate results using GridReducer.
countLettersReducer("Letter Count With Reducer!");
} finally {
G.stop(true);
}
}
/**
* Start grid with IGFS.
*
* @param gridName Grid name.
* @param igfsName IGFS name
* @param mode IGFS mode.
* @param secondaryFs Secondary file system (optional).
* @param restCfg Rest configuration string (optional).
* @return Started grid instance.
* @throws Exception If failed.
*/
protected Ignite startGridWithIgfs(
String gridName,
String igfsName,
IgfsMode mode,
@Nullable IgfsSecondaryFileSystem secondaryFs,
@Nullable IgfsIpcEndpointConfiguration restCfg)
throws Exception {
FileSystemConfiguration igfsCfg = new FileSystemConfiguration();
igfsCfg.setDataCacheName("dataCache");
igfsCfg.setMetaCacheName("metaCache");
igfsCfg.setName(igfsName);
igfsCfg.setBlockSize(IGFS_BLOCK_SIZE);
igfsCfg.setDefaultMode(mode);
igfsCfg.setIpcEndpointConfiguration(restCfg);
igfsCfg.setSecondaryFileSystem(secondaryFs);
igfsCfg.setPrefetchBlocks(PREFETCH_BLOCKS);
igfsCfg.setSequentialReadsBeforePrefetch(SEQ_READS_BEFORE_PREFETCH);
CacheConfiguration dataCacheCfg = defaultCacheConfiguration();
dataCacheCfg.setName("dataCache");
dataCacheCfg.setCacheMode(PARTITIONED);
dataCacheCfg.setNearConfiguration(null);
dataCacheCfg.setWriteSynchronizationMode(CacheWriteSynchronizationMode.FULL_SYNC);
dataCacheCfg.setAffinityMapper(new IgfsGroupDataBlocksKeyMapper(2));
dataCacheCfg.setBackups(0);
dataCacheCfg.setAtomicityMode(TRANSACTIONAL);
dataCacheCfg.setOffHeapMaxMemory(0);
CacheConfiguration metaCacheCfg = defaultCacheConfiguration();
metaCacheCfg.setName("metaCache");
metaCacheCfg.setCacheMode(REPLICATED);
metaCacheCfg.setWriteSynchronizationMode(CacheWriteSynchronizationMode.FULL_SYNC);
metaCacheCfg.setAtomicityMode(TRANSACTIONAL);
IgniteConfiguration cfg = new IgniteConfiguration();
cfg.setGridName(gridName);
TcpDiscoverySpi discoSpi = new TcpDiscoverySpi();
discoSpi.setIpFinder(new TcpDiscoveryVmIpFinder(true));
cfg.setDiscoverySpi(discoSpi);
cfg.setCacheConfiguration(dataCacheCfg, metaCacheCfg);
cfg.setFileSystemConfiguration(igfsCfg);
cfg.setLocalHost("127.0.0.1");
cfg.setConnectorConfiguration(null);
return G.start(cfg);
}
/**
* Starts new grid node.
*
* @param gridName name of new node.
* @param springCfg file with spring configuration to use for this node.
* @return a grid instance local to new node {@link GridGain#start(GridConfiguration)}.
* @throws Exception if node run failed.
*/
protected Grid startNode(String gridName, File springCfg) throws Exception {
assert springCfg != null;
ListableBeanFactory springCtx =
new FileSystemXmlApplicationContext("file:///" + springCfg.getAbsolutePath());
Map cfgMap = springCtx.getBeansOfType(GridConfiguration.class);
assert cfgMap != null;
assert !cfgMap.isEmpty();
GridConfiguration cfg = (GridConfiguration) cfgMap.values().iterator().next();
cfg.setGridName(gridName + "-" + getNextNodeNum());
return G.start(cfg);
}
/**
* See <a href="http://e-docs.bea.com/wls/docs100/javadocs/weblogic/common/T3StartupDef.html">
* http://e-docs.bea.com/wls/docs100/javadocs/weblogic/common/T3StartupDef.html</a> for more
* information.
*
* @param str Virtual name by which the class is registered as a {@code startupClass} in the
* {@code config.xml} file
* @param params A hashtable that is made up of the name-value pairs supplied from the {@code
* startupArgs} property
* @return Result string (log message).
* @throws Exception Thrown if error occurred.
*/
@SuppressWarnings({"unchecked", "CatchGenericClass"})
@Override
public String startup(String str, Hashtable params) throws Exception {
GridLogger log = new GridJavaLogger(LoggingHelper.getServerLogger());
cfgFile = (String) params.get(cfgFilePathParam);
if (cfgFile == null) {
throw new IllegalArgumentException("Failed to read property: " + cfgFilePathParam);
}
String workMgrName = (String) params.get(workMgrParam);
URL cfgUrl = U.resolveGridGainUrl(cfgFile);
if (cfgUrl == null)
throw new ServerLifecycleException(
"Failed to find Spring configuration file (path provided should be "
+ "either absolute, relative to GRIDGAIN_HOME, or relative to META-INF folder): "
+ cfgFile);
GenericApplicationContext springCtx;
try {
springCtx = new GenericApplicationContext();
XmlBeanDefinitionReader xmlReader = new XmlBeanDefinitionReader(springCtx);
xmlReader.loadBeanDefinitions(new UrlResource(cfgUrl));
springCtx.refresh();
} catch (BeansException e) {
throw new ServerLifecycleException(
"Failed to instantiate Spring XML application context: " + e.getMessage(), e);
}
Map cfgMap;
try {
// Note: Spring is not generics-friendly.
cfgMap = springCtx.getBeansOfType(GridConfiguration.class);
} catch (BeansException e) {
throw new ServerLifecycleException(
"Failed to instantiate bean [type="
+ GridConfiguration.class
+ ", err="
+ e.getMessage()
+ ']',
e);
}
if (cfgMap == null)
throw new ServerLifecycleException(
"Failed to find a single grid factory configuration in: " + cfgUrl);
if (cfgMap.isEmpty())
throw new ServerLifecycleException("Can't find grid factory configuration in: " + cfgUrl);
try {
ExecutorService execSvc = null;
MBeanServer mbeanSrv = null;
for (GridConfiguration cfg : (Collection<GridConfiguration>) cfgMap.values()) {
assert cfg != null;
GridConfigurationAdapter adapter = new GridConfigurationAdapter(cfg);
// Set logger.
if (cfg.getGridLogger() == null) adapter.setGridLogger(log);
if (cfg.getExecutorService() == null) {
if (execSvc == null)
execSvc =
workMgrName != null
? new GridThreadWorkManagerExecutor(workMgrName)
: new GridThreadWorkManagerExecutor(J2EEWorkManager.getDefault());
adapter.setExecutorService(execSvc);
}
if (cfg.getMBeanServer() == null) {
if (mbeanSrv == null) {
InitialContext ctx = null;
try {
ctx = new InitialContext();
mbeanSrv = (MBeanServer) ctx.lookup("java:comp/jmx/runtime");
} catch (Exception e) {
throw new IllegalArgumentException(
"MBean server was not provided and failed to obtain " + "Weblogic MBean server.",
e);
} finally {
if (ctx != null) ctx.close();
}
}
adapter.setMBeanServer(mbeanSrv);
}
Grid grid = G.start(adapter, springCtx);
// Test if grid is not null - started properly.
if (grid != null) gridNames.add(grid.name());
}
return getClass().getSimpleName() + " started successfully.";
} catch (GridException e) {
// Stop started grids only.
for (String name : gridNames) G.stop(name, true);
throw new ServerLifecycleException("Failed to start GridGain.", e);
}
}