/** {@inheritDoc} */
@Override
public R get(long timeout, TimeUnit unit) throws GridException {
A.ensure(timeout >= 0, "timeout cannot be negative: " + timeout);
A.notNull(unit, "unit");
checkValid();
try {
long now = System.currentTimeMillis();
long end = timeout == 0 ? Long.MAX_VALUE : now + MILLISECONDS.convert(timeout, unit);
// Account for overflow.
if (end < 0) end = Long.MAX_VALUE;
synchronized (mux) {
while (!done && !cancelled && now < end) {
mux.wait(end - now);
if (!done) now = System.currentTimeMillis();
}
if (done) {
if (err != null) throw U.cast(err);
return res;
}
if (cancelled) throw new GridFutureCancelledException("Future was cancelled: " + this);
throw new GridFutureTimeoutException(
"Timeout was reached before computation completed [duration="
+ duration()
+ "ms, timeout="
+ unit.toMillis(timeout)
+ "ms]");
}
} catch (InterruptedException e) {
throw new GridInterruptedException(
"Got interrupted while waiting for future to complete [duration="
+ duration()
+ "ms, timeout="
+ unit.toMillis(timeout)
+ "ms]",
e);
}
}
/**
* Checks {@link GridSystemProperties#GG_JETTY_PORT} system property and overrides default
* connector port if it present. Then initializes {@code port} with the found value.
*
* @param con Jetty connector.
*/
private void override(AbstractNetworkConnector con) {
String host = System.getProperty(GG_JETTY_HOST);
if (!F.isEmpty(host)) con.setHost(host);
int currPort = con.getPort();
Integer overridePort = Integer.getInteger(GG_JETTY_PORT);
if (overridePort != null && overridePort != 0) currPort = overridePort;
con.setPort(currPort);
port = currPort;
}
/**
* Callback to notify that future is finished. Note that if non-{@code null} exception is passed
* in the result value will be ignored.
*
* @param res Optional result.
* @param err Optional error.
* @return {@code True} if result was set by this call.
*/
public boolean onDone(@Nullable R res, @Nullable Throwable err) {
checkValid();
boolean notify = false;
boolean gotDone = false;
try {
synchronized (mux) {
if (!done) {
gotDone = true;
endTime = System.currentTimeMillis();
this.res = res;
this.err = err;
done = true;
notify = true;
mux.notifyAll(); // Notify possibly waiting child classes.
return true;
}
return false;
}
} finally {
if (gotDone) {
GridStopwatch w = watch;
if (w != null) w.stop();
}
if (notify) notifyListeners();
}
}
/**
* Future adapter.
*
* @author 2005-2011 Copyright (C) GridGain Systems, Inc.
* @version 3.1.1c.19062011
*/
public class GridFutureAdapter<R> extends GridMetadataAwareAdapter
implements GridFuture<R>, Externalizable {
/** Synchronous notification flag. */
private static final boolean SYNC_NOTIFY = U.isFutureNotificationSynchronous();
/** Concurrent notification flag. */
private static final boolean CONCUR_NOTIFY = U.isFutureNotificationConcurrent();
/** Done flag. */
private boolean done;
/** Cancelled flag. */
private boolean cancelled;
/** Result. */
@GridToStringInclude private R res;
/** Error. */
private Throwable err;
/** Set to {@code false} on deserialization whenever incomplete future is serialized. */
private boolean valid = true;
/** Asynchronous listener. */
private final Set<GridInClosure<? super GridFuture<R>>> lsnrs =
new GridLeanSet<GridInClosure<? super GridFuture<R>>>();
/** Creator thread. */
private Thread thread = Thread.currentThread();
/** Mutex. */
private final Object mux = new Object();
/** Context. */
protected GridKernalContext ctx;
/** Logger. */
protected GridLogger log;
/** Future start time. */
protected final long startTime = System.currentTimeMillis();
/** Synchronous notification flag. */
private volatile boolean syncNotify = SYNC_NOTIFY;
/** Concurrent notification flag. */
private volatile boolean concurNotify = CONCUR_NOTIFY;
/** Future end time. */
private volatile long endTime;
/** Watch. */
protected GridStopwatch watch;
/** Empty constructor required for {@link Externalizable}. */
public GridFutureAdapter() {
// No-op.
}
/** @param ctx Kernal context. */
public GridFutureAdapter(GridKernalContext ctx) {
assert ctx != null;
this.ctx = ctx;
log = ctx.log(getClass());
}
/** {@inheritDoc} */
@Override
public long startTime() {
return startTime;
}
/** {@inheritDoc} */
@Override
public long duration() {
long endTime = this.endTime;
return endTime == 0 ? System.currentTimeMillis() - startTime : endTime - startTime;
}
/** {@inheritDoc} */
@Override
public boolean concurrentNotify() {
return concurNotify;
}
/** {@inheritDoc} */
@Override
public void concurrentNotify(boolean concurNotify) {
this.concurNotify = concurNotify;
}
/** {@inheritDoc} */
@Override
public boolean syncNotify() {
return syncNotify;
}
/** {@inheritDoc} */
@Override
public void syncNotify(boolean syncNotify) {
this.syncNotify = syncNotify;
}
/**
* Adds a watch to this future.
*
* @param name Name of the watch.
*/
public void addWatch(String name) {
assert name != null;
watch = W.stopwatch(name);
}
/**
* Adds a watch to this future.
*
* @param watch Watch to add.
*/
public void addWatch(GridStopwatch watch) {
assert watch != null;
this.watch = watch;
}
/** Checks that future is in usable state. */
protected void checkValid() {
if (!valid)
throw new IllegalStateException(
"Incomplete future was serialized and cannot " + "be used after deserialization.");
}
/** @return Valid flag. */
protected boolean isValid() {
return valid;
}
/**
* Gets internal mutex.
*
* @return Internal mutex.
*/
protected Object mutex() {
checkValid();
return mux;
}
/** @return Value of error. */
protected Throwable error() {
checkValid();
synchronized (mux) {
return err;
}
}
/** @return Value of result. */
protected R result() {
checkValid();
synchronized (mux) {
return res;
}
}
/** {@inheritDoc} */
@Override
public R call() throws Exception {
return get();
}
/** {@inheritDoc} */
@Override
public R get(long timeout) throws GridException {
return get(timeout, MILLISECONDS);
}
/** {@inheritDoc} */
@Override
public R get() throws GridException {
checkValid();
try {
synchronized (mux) {
while (!done && !cancelled) mux.wait();
if (done) {
if (err != null) throw U.cast(err);
return res;
}
throw new GridFutureCancelledException("Future was cancelled: " + this);
}
} catch (InterruptedException e) {
throw new GridInterruptedException(e);
}
}
/** {@inheritDoc} */
@Override
public R get(long timeout, TimeUnit unit) throws GridException {
A.ensure(timeout >= 0, "timeout cannot be negative: " + timeout);
A.notNull(unit, "unit");
checkValid();
try {
long now = System.currentTimeMillis();
long end = timeout == 0 ? Long.MAX_VALUE : now + MILLISECONDS.convert(timeout, unit);
// Account for overflow.
if (end < 0) end = Long.MAX_VALUE;
synchronized (mux) {
while (!done && !cancelled && now < end) {
mux.wait(end - now);
if (!done) now = System.currentTimeMillis();
}
if (done) {
if (err != null) throw U.cast(err);
return res;
}
if (cancelled) throw new GridFutureCancelledException("Future was cancelled: " + this);
throw new GridFutureTimeoutException(
"Timeout was reached before computation completed [duration="
+ duration()
+ "ms, timeout="
+ unit.toMillis(timeout)
+ "ms]");
}
} catch (InterruptedException e) {
throw new GridInterruptedException(
"Got interrupted while waiting for future to complete [duration="
+ duration()
+ "ms, timeout="
+ unit.toMillis(timeout)
+ "ms]",
e);
}
}
/** {@inheritDoc} */
@SuppressWarnings({"unchecked"})
@Override
public void listenAsync(@Nullable final GridInClosure<? super GridFuture<R>> lsnr) {
if (lsnr != null) {
checkValid();
boolean done;
synchronized (mux) {
done = this.done;
if (!done) lsnrs.add(lsnr);
}
if (done) {
try {
if (syncNotify) notifyListener(lsnr);
else
ctx.closure()
.runLocalSafe(
new GPR() {
@Override
public void run() {
notifyListener(lsnr);
}
},
true);
} catch (IllegalStateException ignore) {
U.warn(
null,
"Future notification will not proceed because grid is stopped: " + ctx.gridName());
}
}
}
}
/** {@inheritDoc} */
@Override
public void stopListenAsync(@Nullable GridInClosure<? super GridFuture<R>>... lsnr) {
if (F.isEmpty(lsnr))
synchronized (mux) {
lsnrs.clear();
}
else
synchronized (mux) {
lsnrs.removeAll(F.asList(lsnr));
}
}
/** Notifies all registered listeners. */
private void notifyListeners() {
final Collection<GridInClosure<? super GridFuture<R>>> tmp;
synchronized (mux) {
tmp = new ArrayList<GridInClosure<? super GridFuture<R>>>(lsnrs);
}
boolean concurNotify = this.concurNotify;
boolean syncNotify = this.syncNotify;
if (concurNotify) {
for (final GridInClosure<? super GridFuture<R>> lsnr : tmp)
ctx.closure()
.runLocalSafe(
new GPR() {
@Override
public void run() {
notifyListener(lsnr);
}
},
true);
} else {
// Always notify in the thread different from start thread.
if (Thread.currentThread() == thread && !syncNotify) {
ctx.closure()
.runLocalSafe(
new GPR() {
@Override
public void run() {
// Since concurrent notifications are off, we notify
// all listeners in one thread.
for (GridInClosure<? super GridFuture<R>> lsnr : tmp) notifyListener(lsnr);
}
},
true);
} else {
for (GridInClosure<? super GridFuture<R>> lsnr : tmp) notifyListener(lsnr);
}
}
}
/**
* Notifies single listener.
*
* @param lsnr Listener.
*/
private void notifyListener(GridInClosure<? super GridFuture<R>> lsnr) {
assert lsnr != null;
try {
lsnr.apply(this);
} catch (IllegalStateException ignore) {
U.warn(
null,
"Failed to notify listener (grid is stopped) [grid="
+ ctx.gridName()
+ ", lsnr="
+ lsnr
+ ']');
} catch (RuntimeException e) {
U.error(log, "Failed to notify listener: " + lsnr, e);
throw e;
} catch (Error e) {
U.error(log, "Failed to notify listener: " + lsnr, e);
throw e;
}
}
/**
* Default no-op implementation that always returns {@code false}. Futures that do support
* cancellation should override this method and call {@link #onCancelled()} callback explicitly if
* cancellation indeed did happen.
*/
@Override
public boolean cancel() throws GridException {
checkValid();
return false;
}
/** {@inheritDoc} */
@Override
public boolean isDone() {
// Don't check for "valid" here, as "done" flag can be read
// even in invalid state.
synchronized (mux) {
return done || cancelled;
}
}
/** {@inheritDoc} */
@Override
public GridAbsPredicate predicate() {
return new PA() {
@Override
public boolean apply() {
return isDone();
}
};
}
/** {@inheritDoc} */
@Override
public boolean isCancelled() {
checkValid();
synchronized (mux) {
return cancelled;
}
}
/**
* Callback to notify that future is finished with {@code null} result. This method must delegate
* to {@link #onDone(Object, Throwable)} method.
*
* @return {@code True} if result was set by this call.
*/
public final boolean onDone() {
return onDone(null, null);
}
/**
* Callback to notify that future is finished. This method must delegate to {@link #onDone(Object,
* Throwable)} method.
*
* @param res Result.
* @return {@code True} if result was set by this call.
*/
public final boolean onDone(@Nullable R res) {
return onDone(res, null);
}
/**
* Callback to notify that future is finished. This method must delegate to {@link #onDone(Object,
* Throwable)} method.
*
* @param err Error.
* @return {@code True} if result was set by this call.
*/
public final boolean onDone(@Nullable Throwable err) {
return onDone(null, err);
}
/**
* Callback to notify that future is finished. Note that if non-{@code null} exception is passed
* in the result value will be ignored.
*
* @param res Optional result.
* @param err Optional error.
* @return {@code True} if result was set by this call.
*/
public boolean onDone(@Nullable R res, @Nullable Throwable err) {
checkValid();
boolean notify = false;
boolean gotDone = false;
try {
synchronized (mux) {
if (!done) {
gotDone = true;
endTime = System.currentTimeMillis();
this.res = res;
this.err = err;
done = true;
notify = true;
mux.notifyAll(); // Notify possibly waiting child classes.
return true;
}
return false;
}
} finally {
if (gotDone) {
GridStopwatch w = watch;
if (w != null) w.stop();
}
if (notify) notifyListeners();
}
}
/**
* Callback to notify that future is cancelled.
*
* @return {@code True} if cancel flag was set by this call.
*/
public boolean onCancelled() {
checkValid();
synchronized (mux) {
if (cancelled || done) return false;
cancelled = true;
mux.notifyAll(); // Notify possibly waiting child classes.
}
return true;
}
/** {@inheritDoc} */
@Override
public void writeExternal(ObjectOutput out) throws IOException {
boolean done;
boolean cancelled;
Object res;
Throwable err;
boolean syncNotify;
boolean concurNotify;
synchronized (mux) {
done = this.done;
cancelled = this.cancelled;
res = this.res;
err = this.err;
syncNotify = this.syncNotify;
concurNotify = this.concurNotify;
}
out.writeBoolean(done);
out.writeBoolean(syncNotify);
out.writeBoolean(concurNotify);
// Don't write any further if not done, as deserialized future
// will be invalid anyways.
if (done) {
out.writeBoolean(cancelled);
out.writeObject(res);
out.writeObject(err);
}
}
/** {@inheritDoc} */
@SuppressWarnings({"unchecked"})
@Override
public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
boolean done = in.readBoolean();
syncNotify = in.readBoolean();
concurNotify = in.readBoolean();
if (!done) valid = false;
else {
boolean cancelled = in.readBoolean();
R res = (R) in.readObject();
Throwable err = (Throwable) in.readObject();
synchronized (mux) {
this.done = done;
this.cancelled = cancelled;
this.res = res;
this.err = err;
}
}
}
/** {@inheritDoc} */
@Override
public String toString() {
return S.toString(GridFutureAdapter.class, this);
}
}
/** {@inheritDoc} */
@Override
public long duration() {
long endTime = this.endTime;
return endTime == 0 ? System.currentTimeMillis() - startTime : endTime - startTime;
}
/** {@inheritDoc} */
@SuppressWarnings("BusyWait")
@Override
public void start(GridRestProtocolHandler hnd) throws GridException {
InetAddress locHost;
try {
locHost = U.resolveLocalHost(ctx.config().getLocalHost());
} catch (IOException e) {
throw new GridException(
"Failed to resolve local host to bind address: " + ctx.config().getLocalHost(), e);
}
System.setProperty(GG_JETTY_HOST, locHost.getHostAddress());
jettyHnd =
new GridJettyRestHandler(
hnd,
new C1<String, Boolean>() {
@Override
public Boolean apply(String tok) {
return F.isEmpty(secretKey) || authenticate(tok);
}
},
log);
String jettyPath = ctx.config().getRestJettyPath();
final URL cfgUrl;
if (jettyPath == null) {
cfgUrl = null;
if (log.isDebugEnabled())
log.debug("Jetty configuration file is not provided, using defaults.");
} else {
cfgUrl = U.resolveGridGainUrl(jettyPath);
if (cfgUrl == null)
throw new GridSpiException("Invalid Jetty configuration file: " + jettyPath);
else if (log.isDebugEnabled()) log.debug("Jetty configuration file: " + cfgUrl);
}
loadJettyConfiguration(cfgUrl);
AbstractNetworkConnector connector = getJettyConnector();
try {
host = InetAddress.getByName(connector.getHost());
} catch (UnknownHostException e) {
throw new GridException("Failed to resolve Jetty host address: " + connector.getHost(), e);
}
int initPort = connector.getPort();
int lastPort = initPort + ctx.config().getRestPortRange() - 1;
for (port = initPort; port <= lastPort; port++) {
connector.setPort(port);
if (startJetty()) {
if (log.isInfoEnabled()) log.info(startInfo());
return;
}
}
U.warn(
log,
"Failed to start Jetty REST server (possibly all ports in range are in use) "
+ "[firstPort="
+ initPort
+ ", lastPort="
+ lastPort
+ ']');
}
/**
* Loads jetty configuration from the given URL.
*
* @param cfgUrl URL to load configuration from.
* @throws GridException if load failed.
*/
private void loadJettyConfiguration(@Nullable URL cfgUrl) throws GridException {
if (cfgUrl == null) {
HttpConfiguration httpCfg = new HttpConfiguration();
httpCfg.setSecureScheme("https");
httpCfg.setSecurePort(8443);
httpCfg.setSendServerVersion(true);
httpCfg.setSendDateHeader(true);
String srvPortStr = System.getProperty(GG_JETTY_PORT, "8080");
int srvPort;
try {
srvPort = Integer.valueOf(srvPortStr);
} catch (NumberFormatException ignore) {
throw new GridException(
"Failed to start Jetty server because GRIDGAIN_JETTY_PORT system property "
+ "cannot be cast to integer: "
+ srvPortStr);
}
httpSrv = new Server(new QueuedThreadPool(20, 200));
ServerConnector srvConn = new ServerConnector(httpSrv, new HttpConnectionFactory(httpCfg));
srvConn.setHost(System.getProperty(GG_JETTY_HOST, "localhost"));
srvConn.setPort(srvPort);
srvConn.setIdleTimeout(30000L);
srvConn.setReuseAddress(true);
httpSrv.addConnector(srvConn);
httpSrv.setStopAtShutdown(false);
} else {
XmlConfiguration cfg;
try {
cfg = new XmlConfiguration(cfgUrl);
} catch (FileNotFoundException e) {
throw new GridSpiException("Failed to find configuration file: " + cfgUrl, e);
} catch (SAXException e) {
throw new GridSpiException("Failed to parse configuration file: " + cfgUrl, e);
} catch (IOException e) {
throw new GridSpiException("Failed to load configuration file: " + cfgUrl, e);
} catch (Exception e) {
throw new GridSpiException(
"Failed to start HTTP server with configuration file: " + cfgUrl, e);
}
try {
httpSrv = (Server) cfg.configure();
} catch (Exception e) {
throw new GridException("Failed to start Jetty HTTP server.", e);
}
}
assert httpSrv != null;
httpSrv.setHandler(jettyHnd);
override(getJettyConnector());
}
/**
* Removes obsolete deployments in case of redeploy.
*
* @param meta Request metadata.
* @return List of shares deployment.
*/
private GridTuple2<Boolean, SharedDeployment> checkRedeploy(GridDeploymentMetadata meta) {
assert Thread.holdsLock(mux);
SharedDeployment newDep = null;
for (List<SharedDeployment> deps : cache.values()) {
for (SharedDeployment dep : deps) {
if (!dep.isUndeployed() && !dep.isPendingUndeploy()) {
long undeployTimeout = ctx.config().getNetworkTimeout();
SharedDeployment doomed = null;
// Only check deployments with no participants.
if (!dep.hasParticipants()) {
// In case of SHARED deployment it is possible to get hear if
// unmarshalling happens during undeploy. In this case, we
// simply don't do anything.
if (dep.deployMode() == CONTINUOUS) {
if (dep.existingDeployedClass(meta.className()) != null) {
// Change from shared deploy to shared undeploy or user version change.
// Simply remove all deployments with no participating nodes.
if (meta.deploymentMode() == SHARED
|| !meta.userVersion().equals(dep.userVersion())) doomed = dep;
}
}
}
// If there are participants, we undeploy if class loader ID on some node changed.
else if (dep.existingDeployedClass(meta.className()) != null) {
GridTuple2<GridUuid, Long> ldr = dep.getClassLoaderId(meta.senderNodeId());
if (ldr != null) {
if (!ldr.get1().equals(meta.classLoaderId())) {
// If deployed sequence number is less, then schedule for undeployment.
if (ldr.get2() < meta.sequenceNumber()) {
if (log.isDebugEnabled())
log.debug(
"Received request for a class with newer sequence number "
+ "(will schedule current class for undeployment) [newSeq="
+ meta.sequenceNumber()
+ ", oldSeq="
+ ldr.get2()
+ ", senderNodeId="
+ meta.senderNodeId()
+ ", newClsLdrId="
+ meta.classLoaderId()
+ ", oldClsLdrId="
+ ldr.get1()
+ ']');
doomed = dep;
} else if (ldr.get2() > meta.sequenceNumber()) {
long time = System.currentTimeMillis() - dep.timestamp();
if (newDep == null && time < ctx.config().getNetworkTimeout()) {
// Set undeployTimeout, so the class will be scheduled
// for undeployment.
undeployTimeout = ctx.config().getNetworkTimeout() - time;
if (log.isDebugEnabled())
log.debug(
"Received execution request for a stale class (will deploy and "
+ "schedule undeployment in "
+ undeployTimeout
+ "ms) "
+ "[curSeq="
+ ldr.get2()
+ ", staleSeq="
+ meta.sequenceNumber()
+ ", cls="
+ meta.className()
+ ", senderNodeId="
+ meta.senderNodeId()
+ ", curLdrId="
+ ldr.get1()
+ ", staleLdrId="
+ meta.classLoaderId()
+ ']');
// We got the redeployed class before the old one.
// Simply create a temporary deployment for the sender node,
// and schedule undeploy for it.
newDep = createNewDeployment(meta, false);
doomed = newDep;
} else {
U.warn(
log,
"Received execution request for a class that has been redeployed "
+ "(will ignore): "
+ meta.alias());
if (log.isDebugEnabled())
log.debug(
"Received execution request for a class that has been redeployed "
+ "(will ignore) [alias="
+ meta.alias()
+ ", dep="
+ dep
+ ']');
return F.t(false, null);
}
} else {
U.error(
log,
"Sequence number does not correspond to class loader ID [seqNum="
+ meta.sequenceNumber()
+ ", dep="
+ dep
+ ']');
return F.t(false, null);
}
}
}
}
if (doomed != null) {
doomed.onUndeployScheduled();
if (log.isDebugEnabled()) log.debug("Deployment was scheduled for undeploy: " + doomed);
// Lifespan time.
final long endTime = System.currentTimeMillis() + undeployTimeout;
// Deployment to undeploy.
final SharedDeployment undep = doomed;
ctx.timeout()
.addTimeoutObject(
new GridTimeoutObject() {
@Override
public GridUuid timeoutId() {
return undep.classLoaderId();
}
@Override
public long endTime() {
return endTime < 0 ? Long.MAX_VALUE : endTime;
}
@Override
public void onTimeout() {
boolean removed = false;
// Hot redeployment.
synchronized (mux) {
assert undep.isPendingUndeploy();
if (!undep.isUndeployed()) {
undep.undeploy();
undep.onRemoved();
removed = true;
Collection<SharedDeployment> deps = cache.get(undep.userVersion());
if (deps != null) {
for (Iterator<SharedDeployment> i = deps.iterator(); i.hasNext(); )
if (i.next() == undep) i.remove();
if (deps.isEmpty()) cache.remove(undep.userVersion());
}
if (log.isInfoEnabled())
log.info(
"Undeployed class loader due to deployment mode change, "
+ "user version change, or hot redeployment: "
+ undep);
}
}
// Outside synchronization.
if (removed) undep.recordUndeployed(null);
}
});
}
}
}
}
if (newDep != null) {
List<SharedDeployment> list =
F.addIfAbsent(cache, meta.userVersion(), F.<SharedDeployment>newList());
assert list != null;
list.add(newDep);
}
return F.t(true, newDep);
}