/**
* Runs basic cache example.
*
* @param args Command line arguments, none required.
* @throws Exception If example execution failed.
*/
public static void main(String[] args) throws Exception {
final Grid g =
args.length == 0 ? G.start("examples/config/spring-cache.xml") : G.start(args[0]);
try {
// Subscribe to events on every node, so we can visualize what's
// happening in remote caches.
g.run(
BROADCAST,
new CA() {
@Override
public void apply() {
GridLocalEventListener lsnr =
new GridLocalEventListener() {
@Override
public void onEvent(GridEvent event) {
switch (event.type()) {
case EVT_CACHE_OBJECT_PUT:
case EVT_CACHE_OBJECT_READ:
case EVT_CACHE_OBJECT_REMOVED:
{
GridCacheEvent e = (GridCacheEvent) event;
X.println("Cache event [name=" + e.name() + ", key=" + e.key() + ']');
}
}
}
};
GridNodeLocal<String, GridLocalEventListener> loc = g.nodeLocal();
GridLocalEventListener prev = loc.remove("lsnr");
// If there is a listener subscribed from previous runs, unsubscribe it.
if (prev != null) g.removeLocalEventListener(prev);
// Record new listener, so we can check it on next run.
loc.put("lsnr", lsnr);
// Subscribe listener.
g.addLocalEventListener(lsnr, EVTS_CACHE);
}
});
final GridCacheProjection<Integer, String> cache =
g.cache(CACHE_NAME).projection(Integer.class, String.class);
final int keyCnt = 20;
// Store keys in cache.
for (int i = 0; i < keyCnt; i++) cache.putx(i, Integer.toString(i));
// Peek and get on local node.
for (int i = 0; i < keyCnt; i++) {
X.println("Peeked [key=" + i + ", val=" + cache.peek(i) + ']');
X.println("Got [key=" + i + ", val=" + cache.get(i) + ']');
}
// Projection (view) for remote nodes.
GridProjection rmts = g.remoteProjection();
if (!rmts.isEmpty()) {
// Peek and get on remote nodes (comment it out if output gets too crowded).
g.remoteProjection()
.run(
BROADCAST,
new GridAbsClosureX() {
@Override
public void applyx() throws GridException {
for (int i = 0; i < keyCnt; i++) {
X.println("Peeked [key=" + i + ", val=" + cache.peek(i) + ']');
X.println("Got [key=" + i + ", val=" + cache.get(i) + ']');
}
}
});
}
} finally {
G.stop(true);
}
}
/** {@inheritDoc} */
@Override
public void execute(@Nullable GridProjection prj) throws GridException {
if (cb == null)
throw new IllegalStateException("Mandatory local callback is not set for the query: " + this);
if (prj == null) prj = ctx.grid();
prj = prj.forCache(ctx.name());
if (prj.nodes().isEmpty())
throw new GridTopologyException("Failed to execute query (projection is empty): " + this);
GridCacheMode mode = ctx.config().getCacheMode();
if (mode == LOCAL || mode == REPLICATED) {
Collection<GridNode> nodes = prj.nodes();
GridNode node = nodes.contains(ctx.localNode()) ? ctx.localNode() : F.rand(nodes);
assert node != null;
if (nodes.size() > 1 && !ctx.cache().isDrSystemCache()) {
if (node.id().equals(ctx.localNodeId()))
U.warn(
log,
"Continuous query for "
+ mode
+ " cache can be run only on local node. "
+ "Will execute query locally: "
+ this);
else
U.warn(
log,
"Continuous query for "
+ mode
+ " cache can be run only on single node. "
+ "Will execute query on remote node [qry="
+ this
+ ", node="
+ node
+ ']');
}
prj = prj.forNode(node);
}
closeLock.lock();
try {
if (routineId != null)
throw new IllegalStateException("Continuous query can't be executed twice.");
guard.block();
GridContinuousHandler hnd =
new GridCacheContinuousQueryHandler<>(ctx.name(), topic, cb, filter, prjPred);
routineId =
ctx.kernalContext()
.continuous()
.startRoutine(hnd, bufSize, timeInterval, autoUnsubscribe, prj.predicate())
.get();
} finally {
closeLock.unlock();
}
}
/** @param p Projection to get metrics for. */
GridProjectionMetricsImpl(GridProjection p) {
assert p != null;
Collection<GridRichNode> nodes = p.nodes();
int size = nodes.size();
for (GridRichNode node : nodes) {
GridNodeMetrics m = node.metrics();
minActJobs = min(minActJobs, m.getCurrentActiveJobs());
maxActJobs = max(maxActJobs, m.getCurrentActiveJobs());
avgActJobs += m.getCurrentActiveJobs();
minCancelJobs = min(minCancelJobs, m.getCurrentCancelledJobs());
maxCancelJobs = max(maxCancelJobs, m.getCurrentCancelledJobs());
avgCancelJobs += m.getCurrentCancelledJobs();
minRejectJobs = min(minRejectJobs, m.getCurrentRejectedJobs());
maxRejectJobs = max(maxRejectJobs, m.getCurrentRejectedJobs());
avgRejectJobs += m.getCurrentRejectedJobs();
minWaitJobs = min(minWaitJobs, m.getCurrentWaitingJobs());
maxWaitJobs = max(maxWaitJobs, m.getCurrentWaitingJobs());
avgWaitJobs += m.getCurrentWaitingJobs();
minJobExecTime = min(minJobExecTime, m.getCurrentJobExecuteTime());
maxJobExecTime = max(maxJobExecTime, m.getCurrentJobExecuteTime());
avgJobExecTime += m.getCurrentJobExecuteTime();
minJobWaitTime = min(minJobWaitTime, m.getCurrentJobWaitTime());
maxJobWaitTime = max(maxJobWaitTime, m.getCurrentJobWaitTime());
avgJobWaitTime += m.getCurrentJobWaitTime();
minDaemonThreadCnt = min(minDaemonThreadCnt, m.getCurrentDaemonThreadCount());
maxDaemonThreadCnt = max(maxDaemonThreadCnt, m.getCurrentDaemonThreadCount());
avgDaemonThreadCnt += m.getCurrentDaemonThreadCount();
minThreadCnt = min(minThreadCnt, m.getCurrentThreadCount());
maxThreadCnt = max(maxThreadCnt, m.getCurrentThreadCount());
avgThreadCnt += m.getCurrentThreadCount();
minIdleTime = min(minIdleTime, m.getCurrentIdleTime());
maxIdleTime = max(maxIdleTime, m.getCurrentIdleTime());
avgIdleTime += m.getCurrentIdleTime();
minBusyTimePerc = min(minBusyTimePerc, m.getBusyTimePercentage());
maxBusyTimePerc = max(maxBusyTimePerc, m.getBusyTimePercentage());
avgBusyTimePerc += m.getBusyTimePercentage();
minCpuLoad = min(minCpuLoad, m.getCurrentCpuLoad());
maxCpuLoad = max(maxCpuLoad, m.getCurrentCpuLoad());
avgCpuLoad += m.getCurrentCpuLoad();
minHeapMemCmt = min(minHeapMemCmt, m.getHeapMemoryCommitted());
maxHeapMemCmt = max(maxHeapMemCmt, m.getHeapMemoryCommitted());
avgHeapMemCmt += m.getHeapMemoryCommitted();
minHeapMemUsed = min(minHeapMemUsed, m.getHeapMemoryUsed());
maxHeapMemUsed = max(maxHeapMemUsed, m.getHeapMemoryUsed());
avgHeapMemUsed += m.getHeapMemoryUsed();
minHeapMemMax = min(minHeapMemMax, m.getHeapMemoryMaximum());
maxHeapMemMax = max(maxHeapMemMax, m.getHeapMemoryMaximum());
avgHeapMemMax += m.getHeapMemoryMaximum();
minHeapMemInit = min(minHeapMemInit, m.getHeapMemoryInitialized());
maxHeapMemInit = max(maxHeapMemInit, m.getHeapMemoryInitialized());
avgHeapMemInit += m.getHeapMemoryInitialized();
minNonHeapMemCmt = min(minNonHeapMemCmt, m.getNonHeapMemoryCommitted());
maxNonHeapMemCmt = max(maxNonHeapMemCmt, m.getNonHeapMemoryCommitted());
avgNonHeapMemCmt += m.getNonHeapMemoryCommitted();
minNonHeapMemUsed = min(minNonHeapMemUsed, m.getNonHeapMemoryUsed());
maxNonHeapMemUsed = max(maxNonHeapMemUsed, m.getNonHeapMemoryUsed());
avgNonHeapMemUsed += m.getNonHeapMemoryUsed();
minNonHeapMemMax = min(minNonHeapMemMax, m.getNonHeapMemoryMaximum());
maxNonHeapMemMax = max(maxNonHeapMemMax, m.getNonHeapMemoryMaximum());
avgNonHeapMemMax += m.getNonHeapMemoryMaximum();
minNonHeapMemInit = min(minNonHeapMemInit, m.getNonHeapMemoryInitialized());
maxNonHeapMemInit = max(maxNonHeapMemInit, m.getNonHeapMemoryInitialized());
avgNonHeapMemInit += m.getNonHeapMemoryInitialized();
minUpTime = min(minUpTime, m.getUpTime());
maxUpTime = max(maxUpTime, m.getUpTime());
avgUpTime += m.getUpTime();
minCpusPerNode = min(minCpusPerNode, m.getTotalCpus());
maxCpusPerNode = max(maxCpusPerNode, m.getTotalCpus());
avgCpusPerNode += m.getTotalCpus();
}
avgActJobs /= size;
avgCancelJobs /= size;
avgRejectJobs /= size;
avgWaitJobs /= size;
avgJobExecTime /= size;
avgJobWaitTime /= size;
avgDaemonThreadCnt /= size;
avgThreadCnt /= size;
avgIdleTime /= size;
avgBusyTimePerc /= size;
avgCpuLoad /= size;
avgHeapMemCmt /= size;
avgHeapMemUsed /= size;
avgHeapMemMax /= size;
avgHeapMemInit /= size;
avgNonHeapMemCmt /= size;
avgNonHeapMemUsed /= size;
avgNonHeapMemMax /= size;
avgNonHeapMemInit /= size;
avgUpTime /= size;
avgCpusPerNode /= size;
//
// Note that since we are accessing projection
// again it can get out of sync with previous
// measurements as projection could have been
// changed.
//
// We accept it for simplicity and performance
// reasons. Metrics are not guaranteed to be
// "transactional".
//
youngestNodeStartTime = p.youngest().metrics().getNodeStartTime();
oldestNodeStartTime = p.oldest().metrics().getNodeStartTime();
Collection<GridProjection> neighborhood = p.neighborhood();
for (GridProjection neighbors : neighborhood) {
minNodesPerHost = min(minNodesPerHost, neighbors.size());
maxNodesPerHost = max(maxNodesPerHost, neighbors.size());
avgNodesPerHost += neighbors.size();
}
avgNodesPerHost /= neighborhood.size();
totalCpus = p.cpus();
totalHosts = p.hosts();
totalNodes = p.size();
}