Hi all – I’m attempting to surface some output directly to the existing Apex dashboard. Based on the Twitter example here: https://github.com/DataTorrent/Malhar/blob/release-2.0.0/demos/twitter/src/main/java/com/datatorrent/demos/twitter/TwitterTrendingHashtagsApplication.java
With the API here: https://www.datatorrent.com/docs/guides/DTGatewayAPISpecification.html#h.gsxbm0ivxe5y I am defining a PubSub socket as such: public static Operator.InputPort<Object> getWebOutput(DAG dag, String operatorName) { ConsoleOutputOperator operator = dag.addOperator(operatorName, new ConsoleOutputOperator()); operator.setStringFormat(operatorName + ": %s"); return operator.input; } public static Operator.InputPort<Object> getWebOutput(DAG dag, String operatorName, String topic) { String gatewayAddress = dag.getValue(DAG.GATEWAY_CONNECT_ADDRESS); if (!StringUtils.isEmpty(gatewayAddress)) { URI uri = URI.create("ws://" + gatewayAddress + "/pubsub"); LOG.info("WebSocket with gateway at: " + gatewayAddress); PubSubWebSocketOutputOperator<Object> wsOut = dag.addOperator(operatorName, new PubSubWebSocketOutputOperator<>()); wsOut.setUri(uri); wsOut.setTopic(topic); return wsOut.input; } return getWebOutput(dag, operatorName); } I however see the following error: Traceback (most recent call last): File "<string>", line 4, in <module> File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/json/__init__.py", line 338, in loads return _default_decoder.decode(s) File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/json/decoder.py", line 365, in decode obj, end = self.raw_decode(s, idx=_w(s, 0).end()) File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/json/decoder.py", line 383, in raw_decode raise ValueError("No JSON object could be decoded") ValueError: No JSON object could be decoded An example of the JSON object I’m outputting is below: {"type":"data", "topic":"test1", "data":["Elapsed":"1234", "Max (30s)":"5678ms", "Avg (30s)":"2000.00"ms, "Msgs/sec":"5000"]} Any thoughts on what’s going on here or how I can debug this? The job does not ever appear to even launch. Thanks! ________________________________________________________ The information contained in this e-mail is confidential and/or proprietary to Capital One and/or its affiliates and may only be used solely in performance of work or services for Capital One. The information transmitted herewith is intended only for use by the individual or entity to which it is addressed. If the reader of this message is not the intended recipient, you are hereby notified that any review, retransmission, dissemination, distribution, copying or other use of, or taking of any action in reliance upon this information is strictly prohibited. If you have received this communication in error, please contact the sender and delete the material from your computer.
