Stack Overflow
Stack Overflow

Questions tagged [complex-event-processing]

Complex event processing (CEP) consists of processing many events happening across all the layers of an organization, identifying the most meaningful events within the event cloud, analyzing their impact, and taking subsequent action in real time.

Complex event processing refers to process states, the changes of state exceeding a defined threshold of level, time, or value increment or just of a count as the event. It requires the respective event monitoring, event reporting, event recording and event filtering. An event may be observed as a change of state with any physical or logical or otherwise discriminated condition of and in a technical or economical system, each state information with an attached time stamp defining the order of occurrence and a topology mark defining the location of occurrence.

664 questions
2
votes
1 answer

how to represent multichannel event sequences

I'm trying to use TraMineR but am open to feedback/references/links to more info as to how to represent multi-channel or hierarchical event sequences and algorithms that deal with it. I have a complex event structure that I'm trying to figure out…
jojo
  • 83
  • 7
2
votes
1 answer

Event processing framework recommendation

I am new to the event processing domain. I am looking out for a Java based event processing framework for my requirements. I've been through a documentation and tutorial maze on Myriad frameworks - Apache Storm, apache Kafka as well as traditional…
archer
  • 21
  • 1
  • 2
2
votes
2 answers

Writing a Custom Extension Siddhi

I have a java program for create a siddhi extension, my code is the next: package co.com.easysol.phisingRestClient; import java.io.StringReader; import javax.json.Json; import javax.json.JsonReader; import javax.ws.rs.client.Client; import…
ROBY HERNAN RUBIANO
  • 157
  • 9
2
votes
1 answer

Aggregate WSO2 CEP Siddhi events to a single json object

I'm trying to build an execution plan which aggregates different events into one and counts the occurrence (CurrentEventId). The plan looks like the following: define stream inStream (correlation_EventName string, LastEventId int, CurrentEventId…
Seb Krae
  • 311
  • 3
  • 10
2
votes
2 answers

FiWare CEP (Proton) doesn't response via REST

I have some problems with CEP and I hope someone can help. I have a CEP instance in the FiWare Cloud, with the default setup. I have an event with 3 parameters, a temporal context which defines that starts at startup and never ends and nothing else…
Herczeg Ádám
  • 183
  • 3
  • 13
2
votes
1 answer

CEP Proton - Consumer file overwritten

I’m using CEP (Complex Event Processing) Proton FIWARE Generic Enabler and I've first created a project where I defined a Consumer that outputs certain types of events to a file. I realised that every time that I need to restart the Java…
unknown_b
  • 172
  • 2
  • 7
2
votes
1 answer

Writing a sequence query in Siddhi

I am trying to implement a sample project in Siddhi. There is an input event stream with one attribute height. I want to write a sequence query that gives a callback when there are three successive events with same height. I have referred to this…
shshnk
  • 1,621
  • 14
  • 26
2
votes
4 answers

Ruby Complex Event Processing

Is there an open-source complex event processing (CEP) engine for ruby? I'm looking specifically for something that offers stateful analysis, not just rules-engine-style antecedent-predicate productions.
Aubrey Jones
  • 123
  • 6
2
votes
1 answer

How to detect sudden increase or decrease in value for an event using proton run time?

I am developing an application using proton CEP and Orion Context Broker. I have sensor that updates the temperature and CEP gets the temperature update as an event. I want the CEP to produce an alert if there is a difference of 10 in two…
Muneer MK
  • 55
  • 6
2
votes
0 answers

Can not assign a class's instance to it's interface type

In OSB(Oracle Service Bus), I used the default report action, but disabled the default reporting provider in the console settings, so no one is reading the message from the default reporting message queue. Now I am trying to use a JMS adapter in…
Tech Noob
  • 510
  • 1
  • 9
  • 33
2
votes
1 answer

Assigning values between events

We have a question concerning the assignment of values between events in Fiware CEP. Suppose that, based on two triggered events, a third event is initiated. So let’s assume they are called event A, B and C. If A and B are triggered, C should be…
iotproject001
  • 119
  • 7
2
votes
1 answer

WS02 CEP Siddhi Queries

New to Siddhi CEP. Other than the regular docs on WS02 CEP can someone point to a good tutorial. Here are our requirements. Point out some clues on the right ways of writing such queries. Have a single stream of sensor device notification ( IOT…
Amit Mehra
  • 21
  • 3
2
votes
3 answers

Interfacing Orion and other GEs from fiware and other APIs

I'm trying to integrate Proton CEP and Mandrill, an email service, mediated by Orion context broker. When I was starting to study Orion, I thought that it would be able to communicate directly with CEP, exchanging JSON objects through http. And…
A. Vieira
  • 1,213
  • 2
  • 11
  • 27
2
votes
1 answer

No output from the FIWARE complex event processing (CEP) engine

I am sending REST POST request to the FIWARE CEP and expecting output even in a file. But nothing in the file. REST POST (Producer) -> CEP -> File Consumer http://194.28.122.118:8080/ProtonOnWebServer/rest/events {"Name":"TrafficReport",…
Ahmed Sadek
  • 25
  • 4
2
votes
1 answer

how to create query,send events and listen for query results from java in WSO CEP?

I read the documentation provided on the website but it wasnt much informative about how to connect to the server and access its CEP features from java.For example does it accept POJO as event model or is it just xml? Can we create event models and…
armin
  • 1,985
  • 6
  • 38
  • 52
1 2 3
…
44 45