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Fermín Galán's profile - activity

2020-06-03 10:23:47 +0200 commented question Override default timestamp with JSON IotAgent

I'd suggest to post the question in StackOverflow (https://www.stackoverflow.com)

2020-05-15 22:41:36 +0200 answered a question Where can I find the technical details about Fiware and NGSI?

The complete technical specification of NGSIv2 is the following document:

https://fiware.github.io/specificatio...

2019-12-03 21:50:15 +0200 commented answer fiware-service in Orion 2.2.0

I don't agree with the recommendation on not using servicepath. Service path is an additional level of grouping that you can use if service is not enough. The problem of "not finding entities" would happen exactly the same for service so the rationale of the recomendation is not clear to me.

2017-04-18 10:06:12 +0200 answered a question NOT GETTING RESPONSE WHEN REQUESTING SUBSCRIPTION LIST

This is a technical question that should be asked using StackOverflow (see details here). Could you post there, using the "fiware-orion" label, please? Thanks!

2016-10-31 09:45:09 +0200 answered a question Get entities (geo:point) ordered by distance

This kind of technical question about Orion and its API is better asked at StackOverflow, so it has been moved to http://stackoverflow.com/questions/40....

Have a look to this Q&A post regarding when to ask using Askbot and when to ask using StackOverflow.

2016-10-12 13:46:32 +0200 commented answer Any plans to support OPC UA ?

IOTAs can be seen as protocol adaptators (UL, COAP, etc.) to NGSI, so probably the term is correctly applied in this case.

2016-10-07 16:49:04 +0200 commented answer Any plans to support OPC UA ?

Some examples of IOTA agents that has been developed used the framework that Franck cites and that could be used as examples: IOTA UltraLight 2.0 (https://github.com/telefonicaid/iotagent-ul) and IOTA JSON (https://github.com/telefonicaid/iotagent-json).

2016-09-27 12:38:44 +0200 commented question What are the technical requirements of an Context Broker and an Complex Event Processing?

Not sure what do you mean... Could you edit your question post in order explain what do you mean by "technical requirements"? A description of the GEri? The Open Specification in which the GEri is based? Other?

2016-09-13 15:57:28 +0200 answered a question Can i integrate Sentilo and Orion?

As long as Sentilo Platform support the API provided by Orion Context Broker, that integration should be possible. Please have a look to the Orion Context Broker documentation and NGSIv2 API specification.

2016-08-30 14:36:57 +0200 answered a question How to define custom API structure for orion context broker?

This kind of GEri specific technical questions is better posted in StackOverflow (please have a look to this Q&A about when to use one tool or the other).

Thus, we have moved it to SOF (using the "fiware-orion" label), where it will be answered, in the following link: http://stackoverflow.com/questions/39...

2016-08-26 09:46:49 +0200 edited answer context broker with own business logic

Any kind of data validation should be done by application components.

2016-07-29 13:01:22 +0200 answered a question NGSI9 Context Provider Registrations with V2

Context registration management (aka NGSI9) hasn't been yet included in NGSIv2 API stable specification. Although some draft operations have been included in the Work-in-progress version of the specification (the document you cite at http://telefonicaid.github.io/fiware-...) note that they are not included in the current stable Release Candidate (RC 2016.05 at the moment of writing this) document: http://telefonicaid.github.io/fiware-...

Moreover, that document states (in the "Status" section) that NGSI9 is yet pending work:

[...] Nonetheless new functionalities will be added in the near future, particularly JSON-LD and NGSI9 (context registration) support

2016-06-07 10:53:23 +0200 commented question Orion persistence nature

Actually, I think the answer to this question is somehow provided by the links your are citing ;)

2016-05-05 17:57:18 +0200 answered a question how can I use the context broker using Java, is there any API?

At the present moment, it isn't any "official" Java-based client framework for the NGSI API implemented by Orion Context Broker. Some users have developed their own (e.g. https://github.com/jonaslins/fiwareOr...) but we don't know about their maturity or if they are mantained or not. I'd suggest your contact these users directly.

You could use generic REST client frameworks in Java (you could have a look to this question at SOFfor some alternatives). Maybe the following package from Cygnus (which acts as REST client to interact with Orion and CKAN) could be useful: https://github.com/telefonicaid/fiwar...

2016-03-21 12:04:47 +0200 answered a question Ckan and Orion with only one public IP

I understand that as long each one (i.e. Orion and CKAN) runs in a different port, there is no problem in such deployment.

In particular, in the case of Orion, you can adjust the port editing the BROKER_PORT parameter in the /etc/sysconfig/contextBroker file (default value is 1026). You need to restart Orion service with /etc/init.d/contextBroker restart if you modify the configuration file.

2016-02-25 15:32:07 +0200 commented answer create/update/subscribe pattern Use case Orion --> cygnus Fiware

I'd suggest to post the new question in a separate post, for the sake of cleaness. In addition, I'd recommend using StackOverflow for it (see https://ask.fiware.org/question/39/stackoverflow-or-askfiwareorg/). Please use the "fiware-orion" label. Thanks!

2016-02-17 06:32:23 +0200 answered a question create/update/subscribe pattern Use case Orion --> cygnus Fiware

Already answered in StackOverflow: http://stackoverflow.com/questions/35...

2016-01-14 07:04:15 +0200 received badge  Enthusiast
2016-01-05 11:44:00 +0200 answered a question Security of Orion subscriptions.

This kind of GEri specific technical questions is better posted in StackOverflow (please have a look to this Q&A about when to use one tool or the other).

Thus, we have moved it to SOF (using the "fiware-orion" label), where it will be answered, in the following link: http://stackoverflow.com/questions/34...

2015-11-15 13:29:02 +0200 answered a question Orion: Insert sequence of values for the same entity

This question has been already answered at Stack Overflow. Please, read the answer here.

2015-11-04 03:16:57 +0200 answered a question Scalability of Orion

Orion can scale horizontally (there is an interesting post about it at SOF, which I recommend to read). We haven't tested Orion in the scenarios you mention (five or six figures of events per second) but with a conveniently sized infrastructure it should be theoretically possible.

Thus, our recommendation is to start with a single Orion node (properly sized, see some hints here), start injecting load and when the limit is reached, add a new Orion node or MongoDB shard (you would need to check which one is the bottleneck in your case). Continue increasing load an adding new resources until you reach the required load.

For us, it would be very interesting to know the result of such tests if you do them at the end.

2015-09-09 05:35:03 +0200 answered a question Best way to send Orion to background?

This kind of GEri specific technical questions is better posted in StackOverflow (please have a look to this Q&A about when to use one tool or the other).

Thus, we have moved it to SOF (using the "fiware-orion" label), where it will be answered, in the following link: http://stackoverflow.com/questions/32...

2015-07-29 08:24:05 +0200 received badge  Teacher (source)
2015-06-24 03:35:15 +0200 answered a question I have found a bug on a GE ... What can I do?

For these GEi that use Github as source code repository, the best way is to fill an issue, eg:

2015-06-24 03:32:00 +0200 answered a question Stackoverflow or ask.fiware.org?

It depends on the question.

If the question is specific on a GEi (such as Wirecloud, Orion, etc.) and is about programming, API usage, how to run the GEri, etc. the right place is Stackoverflow. You can have a look to existing question in Stackoverflow to get an idea of the kind of questions that should be asked there: Wirecloud or Orion.

If you use StackOverflow don't forget to add the label corresponding to the GEi, e.g: "fiware-wirecloud" or "fiware-orion". If there is no label for the GEi, then use the generic "fiware" label. This is importante: using these labels is the only way our support staff realizes a new question has been posted in StackOverflow.

For any other question about FIWARE, please use ask.fiware.org.

However, don't worry too much :) In the case you use ask.fiware.org for a question that should be in Stackoverflow you will be redirected to the other place or vicecversa.

2015-06-23 10:34:48 +0200 received badge  Supporter (source)
2015-06-23 04:56:57 +0200 answered a question can I deploy a GE outside the FIWARE Lab?

As general answer, yes, you can.

FIWARE GE are open source and most of them provide a packaged version (RPM, Deb, etc.) that can be deployed in any host, either inside FIWARE Lab or not. You can even deploy GE in your own premised in physical servers.

In some cases, they are even more advanced possiblities, like docker containers or VirtualBox images (the previous links point to examples for Orion Context Broker).

2015-06-23 04:50:14 +0200 received badge  Editor (source)
2015-06-23 04:49:47 +0200 answered a question FIWARE is big. is there any tutorial?

Yes, FIWARE is big. And powerful :)

I would recommend you to follow the Quick Tour Guide for Developers at the FIWARE website. It provides a good overview of the different technologies, including pointers to more in-deep information.

2015-06-23 04:45:26 +0200 answered a question what is a FIWARE GE? and a GEi?

A GE (whics stands for "Generic Enabler") is a sofware component definition based on an open specification. For example, the Publish/Subscribe Context Broker (sometimes referred as Context Broker for short) is one of the FIWARE GEs.

A GEi (which stands for "GE implementation) is a a particular implementation of a given GE. For example, Orion Context Broker is a GEi of the Publish/Subscribe Context Broker GE. A given GE may have several GEi (some of them even developed by third-parties outside FIWARE, given that the specifications in which a GE is based are open).

There is a third key term: GEri (which stands for "GE reference implementation"). A GEri is a particular GEi of a given GE which is provided by FIWARE as a reference implementation of that GE. For example, it happens to be that Orion Context Broker is not only a GEi for Publish/Subscribe Context Broker GE, but also a GEri for that GE.