Post data API

A PostDataRequest object gets created with an existing non-null jobId and the XContentType being sent. Individual docs can be added incrementally via the PostDataRequest.JsonBuilder#addDoc method. These are then serialized and sent in bulk when passed to the PostDataRequest.

Alternatively, the serialized bulk content can be set manually, along with its XContentType through one of the other PostDataRequest constructors.

Only XContentType.JSON and XContentType.SMILE are supported.

PostDataRequest.JsonBuilder jsonBuilder = new PostDataRequest.JsonBuilder(); 
Map<String, Object> mapData = new HashMap<>();
mapData.put("total", 109);
jsonBuilder.addDoc(mapData); 
jsonBuilder.addDoc("{\"total\":1000}"); 
PostDataRequest postDataRequest = new PostDataRequest("test-post-data", jsonBuilder); 

The following arguments are optional.

postDataRequest.setResetStart("2018-08-31T16:35:07+00:00"); 
postDataRequest.setResetEnd("2018-08-31T16:35:17+00:00"); 

When executing a PostDataRequest in the following manner, the client waits for the PostDataResponse to be returned before continuing with code execution:

PostDataResponse postDataResponse = client.machineLearning().postData(postDataRequest, RequestOptions.DEFAULT);

Synchronous calls may throw an IOException in case of either failing to parse the REST response in the high-level REST client, the request times out or similar cases where there is no response coming back from the server.

In cases where the server returns a 4xx or 5xx error code, the high-level client tries to parse the response body error details instead and then throws a generic ElasticsearchException and adds the original ResponseException as a suppressed exception to it.

Executing a PostDataRequest can also be done in an asynchronous fashion so that the client can return directly. Users need to specify how the response or potential failures will be handled by passing the request and a listener to the asynchronous post-data method:

client.machineLearning().postDataAsync(postDataRequest, RequestOptions.DEFAULT, listener); 

The asynchronous method does not block and returns immediately. Once it is completed the ActionListener is called back using the onResponse method if the execution successfully completed or using the onFailure method if it failed. Failure scenarios and expected exceptions are the same as in the synchronous execution case.

A typical listener for post-data looks like:

ActionListener<PostDataResponse> listener = new ActionListener<PostDataResponse>() {
    @Override
    public void onResponse(PostDataResponse postDataResponse) {
        
    }

    @Override
    public void onFailure(Exception e) {
        
    }
};

A PostDataResponse contains current data processing statistics.

DataCounts dataCounts = postDataResponse.getDataCounts();