/**
* Processes cache query response.
*
* @param sndId Sender node id.
* @param res Query response.
*/
@SuppressWarnings("unchecked")
private void processQueryResponse(UUID sndId, GridCacheQueryResponse res) {
if (log.isDebugEnabled()) log.debug("Received query response: " + res);
GridCacheQueryFutureAdapter fut = getQueryFuture(res.requestId());
if (fut != null)
if (res.fields())
((GridCacheDistributedFieldsQueryFuture) fut)
.onPage(
sndId,
res.metadata(),
(Collection<Map<String, Object>>) ((Collection) res.data()),
res.error(),
res.isFinished());
else fut.onPage(sndId, res.data(), res.error(), res.isFinished());
else if (!cancelled.contains(res.requestId()))
U.warn(
log,
"Received response for finished or unknown query [rmtNodeId="
+ sndId
+ ", res="
+ res
+ ']');
}
/** {@inheritDoc} */
@Override
protected boolean onPageReady(
boolean loc, GridCacheQueryInfo qryInfo, Collection<?> data, boolean finished, Throwable e) {
GridCacheLocalQueryFuture<?, ?, ?> fut = qryInfo.localQueryFuture();
if (loc) assert fut != null;
if (e != null) {
if (loc) fut.onPage(null, null, e, true);
else
sendQueryResponse(
qryInfo.senderId(),
new GridCacheQueryResponse(cctx.cacheId(), qryInfo.requestId(), e),
qryInfo.query().timeout());
return true;
}
if (loc) fut.onPage(null, data, null, finished);
else {
GridCacheQueryResponse res =
new GridCacheQueryResponse(
cctx.cacheId(), qryInfo.requestId(), /*finished*/ false, /*fields*/ false);
res.data(data);
res.finished(finished);
if (!sendQueryResponse(qryInfo.senderId(), res, qryInfo.query().timeout())) return false;
}
return true;
}
/** {@inheritDoc} */
@SuppressWarnings("ConstantConditions")
@Override
protected boolean onFieldsPageReady(
boolean loc,
GridCacheQueryInfo qryInfo,
@Nullable List<GridQueryFieldMetadata> metadata,
@Nullable Collection<?> entities,
@Nullable Collection<?> data,
boolean finished,
@Nullable Throwable e) {
assert qryInfo != null;
if (e != null) {
if (loc) {
GridCacheLocalFieldsQueryFuture fut =
(GridCacheLocalFieldsQueryFuture) qryInfo.localQueryFuture();
fut.onPage(null, null, null, e, true);
} else
sendQueryResponse(
qryInfo.senderId(),
new GridCacheQueryResponse(cctx.cacheId(), qryInfo.requestId(), e),
qryInfo.query().timeout());
return true;
}
if (loc) {
GridCacheLocalFieldsQueryFuture fut =
(GridCacheLocalFieldsQueryFuture) qryInfo.localQueryFuture();
fut.onPage(null, metadata, data, null, finished);
} else {
GridCacheQueryResponse res =
new GridCacheQueryResponse(
cctx.cacheId(), qryInfo.requestId(), finished, qryInfo.reducer() == null);
res.metadata(metadata);
res.data(entities != null ? entities : data);
if (!sendQueryResponse(qryInfo.senderId(), res, qryInfo.query().timeout())) return false;
}
return true;
}
/**
* Sends cache query response.
*
* @param nodeId Node to send response.
* @param res Cache query response.
* @param timeout Message timeout.
* @return {@code true} if response was sent, {@code false} otherwise.
*/
private boolean sendQueryResponse(UUID nodeId, GridCacheQueryResponse res, long timeout) {
ClusterNode node = cctx.node(nodeId);
if (node == null) return false;
int attempt = 1;
IgniteCheckedException err = null;
while (!Thread.currentThread().isInterrupted()) {
try {
if (log.isDebugEnabled()) log.debug("Send query response: " + res);
Object topic = topic(nodeId, res.requestId());
cctx.io()
.sendOrderedMessage(
node, topic, res, cctx.ioPolicy(), timeout > 0 ? timeout : Long.MAX_VALUE);
return true;
} catch (ClusterTopologyCheckedException ignored) {
if (log.isDebugEnabled())
log.debug(
"Failed to send query response since node left grid [nodeId="
+ nodeId
+ ", res="
+ res
+ "]");
return false;
} catch (IgniteCheckedException e) {
if (err == null) err = e;
if (Thread.currentThread().isInterrupted()) break;
if (attempt < RESEND_ATTEMPTS) {
if (log.isDebugEnabled())
log.debug(
"Failed to send queries response (will try again) [nodeId="
+ nodeId
+ ", res="
+ res
+ ", attempt="
+ attempt
+ ", err="
+ e
+ "]");
if (!Thread.currentThread().isInterrupted())
try {
U.sleep(RESEND_FREQ);
} catch (IgniteInterruptedCheckedException e1) {
U.error(
log,
"Waiting for queries response resending was interrupted (response will not be sent) "
+ "[nodeId="
+ nodeId
+ ", response="
+ res
+ "]",
e1);
return false;
}
} else {
U.error(
log,
"Failed to sender cache response [nodeId=" + nodeId + ", response=" + res + "]",
err);
return false;
}
}
attempt++;
}
return false;
}
