Elasticsearch Java API access source when Exception is thrown - elasticsearch

Question

I am learning the Java RestHighLevelClient but I can't find the answer to this question.
When you submit a REST request to something where a document is not found you will see something like this:
$ curl localhost:9200/customer/_doc/1?pretty
{
"error" : {
"root_cause" : [
{
"type" : "index_not_found_exception",
"reason" : "no such index [customer]",
"resource.type" : "index_expression",
"resource.id" : "customer",
"index_uuid" : "_na_",
"index" : "customer"
}
],
"type" : "index_not_found_exception",
"reason" : "no such index [customer]",
"resource.type" : "index_expression",
"resource.id" : "customer",
"index_uuid" : "_na_",
"index" : "customer"
},
"status" : 404
}
However in the Java client you code something like this:
GetRequest request = new GetRequest(INDEX, ROOT);
GetResponse response = null;
try {
response = client.get(request, RequestOptions.DEFAULT);
} catch (IOException ioe) {
// do something with the IOException
} catch (ElasticsearchException ese) {
// where is the response source?
}
So if the document is not found, you get the ElasticsearchException in which case the local variable response is null. So where do you get
the source document that was present at the low level? (Preferably as a Map).

Answer 1

You can get to the source of the response at the low level via the suppressesed exceptions in the ElasticsearchException.
Throwable[] suppressed = ese.getSuppressed();
if (suppressed.length > 0 && suppressed[0] instanceof ResponseException) {
ResponseException re = (ResponseException) suppressed[0];
Response response = re.getResponse();
}