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Questions tagged [wso2-cep]

251 questions
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Is there any custom mysql input event adapter for wso2 cep

I wanted to have the event recevier/stream from DB instead of jms,email,http. In wso2 cep mysql/db is available as only output adapter not as intput adapter. So is there any custom mysql input adapter available. Please let me know if there is any…
sanath meti
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Folder src is missing when project is imported from Existing Ant Build File

I have an already Java project build with Ant which I want to import in eclipse. A simple procedure is followed. File-->New--->Java--->Java Project From Existing Build File I selected a build file and check the box for Link to the existing build…
aneela
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Sample Project Import in WSO2CEP Developer Studio fails

I have just installed eclipse-luno-with-developer-studio and in need to make some changes in already created samples in wso2cep like the very first one, http but it isn't importing those samples. I can run those samples using ant…
aneela
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WSO2CEP : Visualization of data through Line and Bar charts

I am having a hard time to get data displayed on gadgets in wso2cep dashboard. Stream containing data is something like: ts ssh_logins 2016-05-08 08:59 1 2016-05-08 09:00 2 2016-05-08 09:01 12 2016-05-08 09:14 …
aneela
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Siddhi Query : group by results

I am having a trouble in digesting results of my group by query. My source stream named intermediateStream has data ts uid id_resp_h 2016-05-08 08:59 CLuCgz3HHzG7LpLwH9 172.30.26.119 2016-05-08 09:00 …
aneela
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WSO2CEP : Event Receiver does not accept any JSON parameter with name having dot in it

My json custom formatted events are from a log file which contains parameters names with dots like id.orig_h etc. Sample event is: {"ts":"2016-05-08…
aneela
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Custom Input Mappings JSON : Could not find any matches for the incoming event with JSONPath

I have an event receiver with custom input mapping as my event format was a little different. It has no meta or correlation attributes. Example is: { "ts":"2016-05-08T08:59:47.363764Z", "uid":"CLuCgz3HHzG7LpLwH9", "id.orig_h":"172.30.26.119", …
aneela
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WSO2 IOTS: How to use Event Store to store device history

I'm trying to find out how WSO2 CEP work, Event Stream is simple, but what is Event Store? It can store device history but in where? I'm thinking about Spark and it only store data in memory, right? If I want to store device history in RDMS, what I…
Hieu
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REST service wso2 DAS or CEP

Can I make a calling of service REST, that use a parameter of other input stream of type HTTP from siddhi ? For example: I have a input stream sensorStream: @Import('org.wso2.event.sensor.stream:1.0.0') define stream sensorStream (meta_timestamp…
ROBY HERNAN RUBIANO
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wso2 cep error while create a event receiver kafka type

It is successful to create the event receiver type kafka in the first time. however the second , when I run the kafka again and create a new event receiver from wso2 cep . It show the message as below "Failed to add event receiver, Exception:…
Antonio Ho
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Improve MySQL performance with O_DIRECT

I want to increase the performance of MySQL. So I have done the configuration level changes to MySQL. I used innodb_flush_method = O_DIRECT, but insert rate is not increasing much. Normally, insertion rate is 650 inserts/sec. How do I know weather…
Saveendra Ekanayake
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WSO2 CEP Event tables with Teradata DB connection throws Null Exception

I’ve try to use event tables in Siddhi engine with connection to Teradata Database through JDBC Teradata driver. Teradata Database runs as virtual machine on the same machine where WSO2CEP installed. First of all I’ve put Teradata JDBC driver…
Alex B
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Unable to create JMS Receiver in WSO2 CEP

I am using WSO2 CEP v4.1.0. I have already created 1 JMS receiver and it works fine, And then I try to add another JMS receiver, Then one of error message alert was given by CEP, but no any carbon console messages were printed in console. Is this a…
Saveendra Ekanayake
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WSO2 CEP + Handle null values

Currently WSO2 CEP is triggered using some Http requests. But some times triggered request has null values. At that time how to handle those null values using CEP.
Saveendra Ekanayake
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Update MySQL Database using WSO2 CEP

Is there any way to update the MySQL Db without updating the empty values in the stream. If my input data stream contains some empty values, currently that empty value is indicate using "data_empty" value. At that time CEP update the DB with that…
Saveendra Ekanayake
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