Stack Overflow
Stack Overflow

Questions tagged [fiware-sth-comet]

fiware-sth-comet refers to the Short Time Historic (STH, aka. Comet) component, a FIWARE component able to manage (storing and retrieving) historical context information as raw and aggregated time series data.

The FIWARE Short Time Historic (STH) - Comet is a component of the FIWARE ecosystem in charge of managing (storing and retrieving) historical raw and aggregated time series context information about the evolution in time of context data (i.e., entity attribute values) registered in an Orion Context Broker instance.

All the communications between the STH and the Orion Context Broker as well as between the STH and any third party (typically for data retrieval) use standardized NGSI9 and NGSI10 interfaces.

If this is your first contact with the STH component, it is highly recommended that you visit the “Getting started” guide (https://github.com/telefonicaid/fiware-sth-comet/blob/master/doc/manuals/getting-started.md) where we introduce some basic concepts upon which the STH component leans on all the functionality it offers.

In case you are curious about why we called this component Comet, you can also visit the “Why Comet” (https://github.com/telefonicaid/fiware-sth-comet/blob/master/doc/manuals/why-comet.md) section of the documentation.

29 questions
1
vote
1 answer

How to fix erro while running sth-comet?

I am trying to install and configure STH-Comet, but I am having difficulties and I could not solve it. I'm following the existing tutorial. And some errors occur in the process. I would like your help if possible. After cloning the repository and…
Rosiberto
  • 83
  • 9
1
vote
1 answer

Can a context consumer retrieve history values for an entity through Orion?

I am new with Fiware technologies and I have read many documents regarding Orion Context Broker but is not clear for me if a context consumer can request from Orion Context Broker history values about an entity. I mean that if the context consumer…
Maria
  • 43
  • 5
1
vote
1 answer

How to use Wirecloud sth-source operator

I have found a STH-Comet wirecloud operator(https://github.com/wirecloud-fiware/sth-source-operator). Now how can i use this operator in my mashup and which operator/widget i have to use to provide it data.Also, in which widget i can use sth-comet…
Vishal Manchanda
  • 45
  • 7
1
vote
0 answers

Fiware Orion subscription to STH in NGSI V2 with legacy values

Im working with sth, with ngsi v1 i dont have any problems. When i try to use it with ngsi v2 ( trough legacy values) im having several problems. Im creating a subscription in v2 in this way: POST /v2/subscriptions HTTP/1.1 Host:…
Nacho
  • 11
  • 2
1
vote
0 answers

Securing Short-term-history (STH, aka. comet) with FIWARE-PEP-STEELSKIN

I'm struggling around FIWARE Short Time Historic (STH, aka. Comet) securization by using Steelskin, the additional GEi of PEP Proxy GE (https://github.com/telefonicaid/fiware-pep-steelskin). We finally came up with a configuration that perfectly…
draba
  • 43
  • 5
1
vote
1 answer

STH getting historical raw context

I installed Orion and Fiware STH in order to use the minimalistic option. The problem is that when i subscribe to an orion context then consult, the array is null. "name": "temperature", "values": [] In the STH log it says: ERROR when collecting…
Mauro Cruz
  • 105
  • 1
  • 1
  • 8
1
vote
1 answer

Orion chronological consultation

I would like to know if it is possible to consult older data using orion Context Broker. EG: I have a temperature attribute and the value is constantly changing (4,5,9,10,30,2). In the examples and specification i had the impression it is only…
Mauro Cruz
  • 105
  • 1
  • 1
  • 8
0
votes
0 answers

STH-Comet - cors issues in docker image

I'm using STH-Comet and I cannot use the APIs in my ReactJS application for CORS issues. Is there a way to enable the cors configuration via docker env var? I could try it just set cors.enable = true (of config.js file) in the docker container.…
pasquy73
  • 563
  • 3
  • 13
0
votes
1 answer

Question on Visualization of FIWARE STH data with Grafana

I have a question based on FIWARE timescale database design when using STH and grafana for visualization. **Background**: I created a test project based on FIWARE using Docker-Compose. The project currently includes: Orion-LD + Mongo-DB STH based…
IngMiad
  • 1
  • 1
0
votes
1 answer

Is it possible to configure different resolutions for a sth-comet sink?

We have deployed in docker an instance of Orion Context Broker, an instance of Cygnus and an instance of STH-Comet using the formal approach. We need to save some entities in the MongoDB aggregates with the resolution of month, day and others with…
Jordi
  • 21
  • 1
0
votes
1 answer

Is Fiware-STH-Comet service compatible with NGSI-LD (linked data) format?

I'm using Fiware's Orion LD service (https://github.com/FIWARE/context.Orion-LD) in a Docker environment in order to store and manage data in the NGSI-LD format. I want to post a subscription to Orion-LD so that Fiware-STH-Comet will be notified of…
T.D.
  • 11
  • 4
0
votes
1 answer

How to calculate max in sth-comet?

sth-comet offers the possibility of calculate max, min and other functions, as described [here]https://github.com/telefonicaid/fiware-sth-comet/blob/master/doc/manuals/aggregated-data-retrieval.md But I have tried different types and it doesn't…
David Bueno Vallejo
  • 83
  • 7
0
votes
1 answer

STH-Comet installation

Recently I installed in a Fiware instance STH-Comet through the command: git clone https://github.com/telefonicaid/fiware-sth-comet.git cd fiware-sth-comet npm install Today I went to install again and when cloning the STH-Comet repository the…
Rosiberto
  • 83
  • 9
0
votes
1 answer

Unable to create the STH context broker subscription

I'm using the master branch of the sth-comet's github repo (currently a prerelease of 2.0.0-next) and I am able to install and execute it. The problem appears when I want to create the subscription on the context broker (v1.4.0). Both services are…
Álvaro Arranz
  • 2,015
  • 1
  • 13
  • 22
1
2