Details
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Type:
extRequest
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Status: Closed
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Priority:
Major
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Resolution: Done
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Fix Version/s: 2021
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Component/s: FIWARE-TECH-HELP
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Labels:None
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Sender Email:
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HD-Chapter:Data
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HD-Enabler:CEP
Description
Dear All,
When we create the consumers and specify output as a file "./sample/DOS.txt"
Do we need to create those files or the CEP handle this issue ?
I am asking because when I leave the folder empty, in catalina.out I find
error that no such file or directory and no files are created
Looking forward for your reply
Ahmed Sadek
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[Created via e-mail received from: Ahmed Sadek <don1559@gmail.com>]
Activity
Dear Ahmed,
As you pointed out, from the log you saw that the CEP can't open the output file:
>>>
Apr 3, 2015 3:58:30 PM com.ibm.hrl.proton.adapter.servers.AbstractServer startAdapters
WARNING: initializeAdapters: failed to initialize adapter Output adapter for consumer: SysTemCrashConsumer, reason: No such file or directory
Apr 3, 2015 3:58:30 PM com.ibm.hrl.proton.adapter.servers.AbstractServer startAdapters
WARNING: initializeAdapters: failed to initialize adapter Output adapter for consumer: DoSAttackTRConsumer, reason: No such file or directory
>>>
This usually happen if the path specified as the Consumer's output file doesn't exist, or if you run on unix/linux and tomcat has no permission to write in this directory or to write to the specific file.
I would also recommend to use an absolute path and not relative path for the output file, since in different operating systems, the Tomcat "current" directory may be different.
As for your current question - you don't need to create the file, but you do need to create the directory and make sure tomcat has permission to write to this directory (or if the file exists to write to this file)
So here are my recommendations:
1. Stop tomcat
2. Delete catalina.out
3. Activate tomcat
4. In the CEP web UI, change the path of the Consumers to an absolute path, save the project, export it to the repository
5. Make sure the path you specified for the Consumers exists, and that tomcat has permission to write to the directory, and if the files exist, to this files.
6. Change the status of the CEP engine to Stop
7. Change the status of the CEP engine to Start
8. Send an input event
Make sure you don't see the warning listed above in the catalina.out
Hope this helps,
Best regards,
Tali
Dear Ahmed,
Sorry for belated reply due to the Easter holidays. Please contact the GE owner directly. Her address is public on the catalogue:
http://catalogue.fiware.org/enablers/complex-event-processing-cep-proactive-technology-online
Best regards,
Miguel
El 01/04/2015 a las 18:39, Ahmed Sadek escribió:
Dear All,
When we create the consumers and specify output as a file "./sample/DOS.txt"
Do we need to create those files or the CEP handle this issue ?
I am asking because when I leave the folder empty, in catalina.out I find error that no such file or directory and no files are created
Looking forward for your reply
Ahmed Sadek