in modules/core/src/main/java/org/apache/ignite/internal/processors/rest/handlers/task/GridTaskCommandHandler.java [181:402]
private IgniteInternalFuture<GridRestResponse> handleAsyncUnsafe(final GridRestRequest req) throws IgniteCheckedException {
assert req instanceof GridRestTaskRequest : "Invalid command for topology handler: " + req;
assert SUPPORTED_COMMANDS.contains(req.command());
if (log.isDebugEnabled())
log.debug("Handling task REST request: " + req);
GridRestTaskRequest req0 = (GridRestTaskRequest)req;
final GridFutureAdapter<GridRestResponse> fut = new GridFutureAdapter<>();
final GridRestResponse res = new GridRestResponse();
final GridClientTaskResultBean taskRestRes = new GridClientTaskResultBean();
// Set ID placeholder for the case it wouldn't be available due to remote execution.
taskRestRes.setId('~' + ctx.localNodeId().toString());
final boolean locExec = req0.destinationId() == null || req0.destinationId().equals(ctx.localNodeId()) ||
ctx.discovery().node(req0.destinationId()) == null;
switch (req.command()) {
case EXE: {
final boolean async = req0.async();
final String name = req0.taskName();
if (F.isEmpty(name))
throw new IgniteCheckedException(missingParameter("name"));
final List<Object> params = req0.params();
long timeout = req0.timeout();
final IgniteInternalFuture<Object> taskFut;
if (locExec) {
Object arg = !F.isEmpty(params) ? params.size() == 1 ? params.get(0) : params.toArray() : null;
taskFut = ctx.task().execute(name, arg, options().asPublicRequest().withTimeout(timeout));
}
else {
// Using predicate instead of node intentionally
// in order to provide user well-structured EmptyProjectionException.
ClusterGroup prj = ctx.grid().cluster().forPredicate(nodeForNodeId(req.destinationId()));
taskFut = ctx.closure().callAsync(
BALANCE,
new ExeCallable(name, params, timeout),
options(prj.nodes()).withFailoverDisabled()
);
}
if (async) {
if (locExec) {
IgniteUuid tid = ((ComputeTaskInternalFuture)taskFut).getTaskSession().getId();
taskDescs.put(tid, new TaskDescriptor(false, null, null));
taskRestRes.setId(tid.toString() + '~' + ctx.localNodeId().toString());
res.setResponse(taskRestRes);
}
else
res.setError("Asynchronous task execution is not supported for routing request.");
fut.onDone(res);
}
taskFut.listen(new IgniteInClosure<IgniteInternalFuture<Object>>() {
@Override public void apply(IgniteInternalFuture<Object> taskFut) {
try {
TaskDescriptor desc;
try {
desc = new TaskDescriptor(true, taskFut.get(), null);
}
catch (IgniteCheckedException e) {
if (e.hasCause(ClusterTopologyCheckedException.class, ClusterGroupEmptyCheckedException.class))
U.warn(log, "Failed to execute task due to topology issues (are all mapped " +
"nodes alive?) [name=" + name + ", clientId=" + req.clientId() +
", err=" + e + ']');
else {
if (!X.hasCause(e, VisorClusterGroupEmptyException.class))
U.error(log, "Failed to execute task [name=" + name + ", clientId=" +
req.clientId() + ']', e);
}
desc = new TaskDescriptor(true, null, e);
}
if (async && locExec) {
assert taskFut instanceof ComputeTaskInternalFuture;
IgniteUuid tid = ((ComputeTaskInternalFuture)taskFut).getTaskSession().getId();
taskDescs.put(tid, desc);
}
if (!async) {
if (desc.error() == null) {
try {
taskRestRes.setFinished(true);
taskRestRes.setResult(desc.result());
res.setResponse(taskRestRes);
fut.onDone(res);
}
catch (IgniteException e) {
fut.onDone(new IgniteCheckedException("Failed to marshal task result: " +
desc.result(), e));
}
}
else
fut.onDone(desc.error());
}
}
finally {
if (!async && !fut.isDone())
fut.onDone(new IgniteCheckedException("Failed to execute task (see server logs for details)."));
}
}
});
break;
}
case RESULT: {
String id = req0.taskId();
if (F.isEmpty(id))
throw new IgniteCheckedException(missingParameter("id"));
StringTokenizer st = new StringTokenizer(id, "~");
if (st.countTokens() != 2)
throw new IgniteCheckedException("Failed to parse id parameter: " + id);
String tidParam = st.nextToken();
String resHolderIdParam = st.nextToken();
taskRestRes.setId(id);
try {
IgniteUuid tid = !F.isEmpty(tidParam) ? IgniteUuid.fromString(tidParam) : null;
UUID resHolderId = !F.isEmpty(resHolderIdParam) ? UUID.fromString(resHolderIdParam) : null;
if (tid == null || resHolderId == null)
throw new IgniteCheckedException("Failed to parse id parameter: " + id);
if (ctx.localNodeId().equals(resHolderId)) {
TaskDescriptor desc = taskDescs.get(tid);
if (desc == null)
throw new IgniteCheckedException("Task with provided id has never been started on provided node" +
" [taskId=" + tidParam + ", taskResHolderId=" + resHolderIdParam + ']');
taskRestRes.setFinished(desc.finished());
if (desc.error() != null)
throw new IgniteCheckedException(desc.error().getMessage());
taskRestRes.setResult(desc.result());
res.setResponse(taskRestRes);
}
else {
IgniteBiTuple<String, GridTaskResultResponse> t = requestTaskResult(resHolderId, tid);
if (t.get1() != null)
throw new IgniteCheckedException(t.get1());
GridTaskResultResponse taskRes = t.get2();
assert taskRes != null;
if (!taskRes.found())
throw new IgniteCheckedException("Task with provided id has never been started on provided node " +
"[taskId=" + tidParam + ", taskResHolderId=" + resHolderIdParam + ']');
taskRestRes.setFinished(taskRes.finished());
if (taskRes.error() != null)
throw new IgniteCheckedException(taskRes.error());
taskRestRes.setResult(taskRes.result());
res.setResponse(taskRestRes);
}
}
catch (IllegalArgumentException e) {
String msg = "Failed to parse parameters [taskId=" + tidParam + ", taskResHolderId="
+ resHolderIdParam + ", err=" + e.getMessage() + ']';
if (log.isDebugEnabled())
log.debug(msg);
throw new IgniteCheckedException(msg, e);
}
fut.onDone(res);
break;
}
case NOOP: {
fut.onDone(new GridRestResponse());
break;
}
default:
assert false : "Invalid command for task handler: " + req;
}
if (log.isDebugEnabled())
log.debug("Handled task REST request [res=" + res + ", req=" + req + ']');
return fut;
}