dsmiley commented on a change in pull request #1688:
URL: https://github.com/apache/lucene-solr/pull/1688#discussion_r463644255
##########
File path:
solr/solrj/src/java/org/apache/solr/client/solrj/impl/CloudHttp2SolrClient.java
##########
@@ -113,6 +118,25 @@ protected boolean wasCommError(Throwable rootCause) {
return false;
}
+ /**
+ * Execute an asynchronous request against a Solr server for a given
collection
+ *
+ * @param request the request to execute
+ * @param collection the collection to execute the request against
+ * @param asyncListener the request listener, not null (use a no-op listener
instead for async requests with no callback)
+ *
+ * @return a {@link Cancellable} allowing you to cancel execution of the
async request
+ *
+ * @throws IOException If there is a low-level I/O error.
+ * @throws SolrServerException if there is an error on the server
+ */
+ public Cancellable asyncRequest(@SuppressWarnings({"rawtypes"}) SolrRequest
request,
Review comment:
Some play code:
```
public static void main(String[] args) throws InterruptedException,
ExecutionException {
CompletableFuture<String> clientCf = new CompletableFuture<>();
final Thread thread = new Thread(() -> {
CompletableFuture<String> workCf = clientCf.whenComplete((result,
throwable) -> {
System.out.println("whenComplete r:" + result + " t:" + throwable);
});
try {
Thread.sleep(2000);
System.out.println("bg: cancelled? " + workCf.isCancelled());
clientCf.complete("Completed-Result");
} catch (InterruptedException e) {
System.out.println("bg: Interrupted");
e.printStackTrace();
}
});
thread.start();
Thread.sleep(1000);
boolean cancelRsp = clientCf.cancel(true);
System.out.println("client: cancelRsp (was cancelled)="+cancelRsp);
if (!cancelRsp) {
System.out.println("client: " + clientCf.get());
}
thread.join();
}
```
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