/**
* Execute {@code HelloWorld} example grid-enabled with {@code Gridify} annotation.
*
* @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 {
// Simple example stateful instance to demonstrate
// how object state can be handled with grid-enabled methods.
GridifyHelloWorld helloWorld = new GridifyHelloWorld();
// Set simple state.
helloWorld.setState("Hello World");
// This method is grid-enabled and
// will be executed on remote grid nodes.
int phraseLen = helloWorld.sayIt();
X.println(">>>");
X.println(">>> Finished executing Gridify \"Hello World\" stateful example.");
X.println(">>> Total number of characters in the phrase is '" + phraseLen + "'.");
X.println(">>> You should see print out of 'Hello' on one node and 'World' on another node.");
X.println(">>> Check all nodes for output (this node is also part of the grid).");
X.println(">>>");
} finally {
G.stop(true);
}
}
/**
* Execute {@code HelloWorld} example grid-enabled with {@code Gridify} annotation.
*
* @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 {
// This method will be executed on a remote grid nodes.
int phraseLen = sayIt("Hello World");
X.println(">>>");
X.println(">>> Finished executing Gridify \"Hello World\" example with custom task.");
X.println(">>> Total number of characters in the phrase is '" + phraseLen + "'.");
X.println(">>> You should see print out of 'Hello' on one node and 'World' on another node.");
X.println(">>> Check all nodes for output (this node is also part of the grid).");
X.println(">>>");
} finally {
G.stop(true);
}
}
/**
* Starts up grid and checks all provided values for prime.
*
* @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 {
// Starts grid.
Grid grid = args.length == 0 ? G.start() : G.start(args[0]);
// Values we want to check for prime.
long[] checkVals = {32452841, 32452843, 32452847, 32452849, 236887699, 217645199};
X.println(">>>");
X.println(
">>> Starting to check the following numbers for primes: " + Arrays.toString(checkVals));
try {
long start = System.currentTimeMillis();
for (long checkVal : checkVals) {
// This method will be executed on the Grid as it is
// annotated with @Gridify annotation.
Long divisor = GridPrimeChecker.checkPrime(checkVal, 2, checkVal);
// If divisor is null, then the number is prime.
if (divisor == null) {
X.println("Value '" + checkVal + "'is a prime number.");
} else {
X.println("Value '" + checkVal + "' is divisible by '" + divisor + '\'');
}
}
long totalTime = System.currentTimeMillis() - start;
X.println(">>> Total time to calculate all primes (milliseconds): " + totalTime);
X.println(">>>");
} finally {
// Stops grid.
G.stop(grid.name(), true);
}
}
/**
* 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);
}
}
/**
* Aspect implementation which executes grid-enabled methods on remote nodes.
*
* @param invoc Method invocation instance provided by JBoss AOP framework.
* @return Method execution result.
* @throws Throwable If method execution failed.
*/
@SuppressWarnings({
"ProhibitedExceptionDeclared",
"ProhibitedExceptionThrown",
"CatchGenericClass",
"unchecked"
})
@Bind(
pointcut = "execution(* *->@org.gridgain.grid.gridify.Gridify(..))",
cflow = "org.gridgain.grid.gridify.aop.jboss.GridifyJbossAspect.CFLOW_STACK")
public Object gridify(MethodInvocation invoc) throws Throwable {
Method mtd = invoc.getMethod();
Gridify ann = mtd.getAnnotation(Gridify.class);
assert ann != null : "Intercepted method does not have gridify annotation.";
// Since annotations in Java don't allow 'null' as default value
// we have accept an empty string and convert it here.
// NOTE: there's unintended behavior when user specifies an empty
// string as intended grid name.
// NOTE: the 'ann.gridName() == null' check is added to mitigate
// annotation bugs in some scripting languages (e.g. Groovy).
String gridName = F.isEmpty(ann.gridName()) ? null : ann.gridName();
if (G.state(gridName) != STARTED) {
throw new GridException("Grid is not locally started: " + gridName);
}
// Initialize defaults.
GridifyArgument arg =
new GridifyArgumentAdapter(
mtd.getDeclaringClass(),
mtd.getName(),
mtd.getParameterTypes(),
invoc.getArguments(),
invoc.getTargetObject());
if (!ann.interceptor().equals(GridifyInterceptor.class)) {
// Check interceptor first.
if (!ann.interceptor().newInstance().isGridify(ann, arg)) {
return invoc.invokeNext();
}
}
if (!ann.taskClass().equals(GridifyDefaultTask.class) && ann.taskName().length() > 0) {
throw new GridException(
"Gridify annotation must specify either Gridify.taskName() or "
+ "Gridify.taskClass(), but not both: "
+ ann);
}
try {
Grid grid = G.grid(gridName);
// If task class was specified.
if (!ann.taskClass().equals(GridifyDefaultTask.class)) {
return grid.execute(
(Class<? extends GridTask<GridifyArgument, Object>>) ann.taskClass(),
arg,
ann.timeout())
.get();
}
// If task name was not specified.
if (ann.taskName().length() == 0) {
return grid.execute(
new GridifyDefaultTask(invoc.getActualMethod().getDeclaringClass()),
arg,
ann.timeout())
.get();
}
// If task name was specified.
return grid.execute(ann.taskName(), arg, ann.timeout()).get();
} catch (Throwable e) {
for (Class<?> ex : invoc.getMethod().getExceptionTypes()) {
// Descend all levels down.
Throwable cause = e.getCause();
while (cause != null) {
if (ex.isAssignableFrom(cause.getClass())) {
throw cause;
}
cause = cause.getCause();
}
if (ex.isAssignableFrom(e.getClass())) {
throw e;
}
}
throw new GridifyRuntimeException("Undeclared exception thrown: " + e.getMessage(), e);
}
}
