| Issue |
EPJ Web of Conf.
Volume 295, 2024
26th International Conference on Computing in High Energy and Nuclear Physics (CHEP 2023)
|
|
|---|---|---|
| Article Number | 01055 | |
| Number of page(s) | 7 | |
| Section | Data and Metadata Organization, Management and Access | |
| DOI | https://doi.org/10.1051/epjconf/202429501055 | |
| Published online | 06 May 2024 | |
https://doi.org/10.1051/epjconf/202429501055
Using MQTT and Node-RED to monitor the ATLAS Meta-data Interface (AMI) stack and define metadata aggregation tasks in a pipelined way
Centre National de la Recherche Scientifique (CNRS)/Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Grenoble FRANCE
* e-mail: ami@lpsc.in2p3.fr
Published online: 6 May 2024
ATLAS Metadata Interface (AMI) is a generic ecosystem for metadata aggregation, transformation and cataloging. Each sub-system of the stack has recently been improved in order to acquire messaging/telemetry capabilities. This paper describes the whole stack monitoring with the Message Queuing Telemetry Transport (MQTT) protocol and Node-RED, a tool for wiring together hardware/software devices. Finally, this paper shows how Node-RED is used to graphically define metadata aggregation tasks, in a pipelined way, without introducing any single point of failure.
© The Authors, published by EDP Sciences, 2024
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