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Questions tagged [cumulocity]

Cumulocity is a proprietary, cloud-based Internet of Things (IoT) applications development platform.

Cumulocity is a proprietary, cloud-based Internet of Things (IoT) applications development platform with REST APIs to connect IoT devices. For connecting devices, many embedded environments using , , , , and others are supported.

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how do you reverse the data given from a REST API response?

I'm trying to read measurement data, and I get a large amount of data back. I can narrow down the items per page and get the last page, but is there a way to reverse the data so I get the most recent measurement POST? For example, I to a: GET:…
IoTSherpa
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Access to cumulocity maven repository

I would like to develop for cumulocity and I wanted to try the demos from bitbucket (https://bitbucket.org/m2m/cumulocity-clients-java). Unfortunatelly, in order to run these, I need access to the Cumulocity Maven repository. I also need access for…
Mircea
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How can i introduce my own permission in a plugin

I would like to write an plugin for the cockpit app. The feature i would like to add includes also an additional item in the drop-down menu. However i also would like to introduce my own permission. If the role of the user has the permission the…
apes
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Limit User Access To Particular Group/Device , Alarms , Events , Measurements

I want a user to only access a specific device in a group and alarms , measurements , events , related to that only.Kindly check and respond.
abir banerjee
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Cumulocity microservice storing data locally - size cap?

I'm storing some logs locally(in the deployed docker container) for my c8y microservice and exposing them via REST. What's a reasonable maximum size of the log data?
Mihail Kostira
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Cannot build the "Hello world" cumulocity example with Maven

I am walking through the Cumulocity IoT Guides and I decided to run the "Hello World" example, which can be found here: http://cumulocity.com/guides/device-sdk/java#hello-world-basic I went through all the steps and a problem occurred at the last…
Ivajlo Iliev
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SmartRule For HTTP

In the Cumulocity guide, https://www.cumulocity.com/guides/event-language/introduction/, there is a mention of Event Streams for HTTP. HTTP ResponseReceived SendReqeust This group of events represents sending http requests to external…
abir banerjee
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Is there a (documented) way to get attributes from the data point library via API?

In cumulocity cockpit you can specify data point attributes like a display name, unit, value range etc in a so called "data point library". I wonder how I can use these attributes when developing custom dashboard widgets. I figured out that there is…
stedaho
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How to show custom information in data explorer graph schema table using event processing script in c8y

From device, the information is sent to the c8y platform. The parameter values are in HEX and we convert it to Integer or string using a Event processing script. The converted values are stored in the database table. But we are facing a challenge…
Seshathiry Ranganathan
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CEP rule to update fragments within a managed object

I need to be able to create an event processing rule that when you add a new device, you take a string value from one fragment (e.g.: c8y_Hardware.imei) and use that string to populate another fragment (e.g: c8y_Mobile.imei). So the new device would…
Boyd Machtolff
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Cumulocity - Send Measurement/Alarm/Event using external ID via HTTP

I've been recently exploring Cumulocity and managed to use the external ID to send data (measurements/alarms/events) via MQTT. Its well documented and pretty straight forward. But I cant find how to send data (measurement/alarm/event) using…
Dimmy
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How to connect to Cumulocity services in order to add multiple devices data

I'm currently building a dotnet core project that receives data from multiple devices and has to send them over to Cumulocity. So the flow of the app would be something similar to: dotnet core app receives new data connects to cumulocity…
Nunosav
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plugin not found error in node.js command prompt

I have configured cumulocity.json as below: { "name": "Cumulocityexercises", "availability": "PRIVATE", "contextPath": "cumulocityexercises", "key": "cumulocityexercises-appkey", "resourcesUrl": "/", "type": "HOSTED", "tabsHorizontal":…
sandeep vellala
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Cumulocity MQTT operation status doesn't change

I've registered a trial account to test Cumulocity and its mqtt api. I want to send operation to some device (currently emulated by java service) and receive operation result. As manual I use the following…
Vitaliy Mikhailov
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how to connect and subscribe from cumulocity to MQTT broker

I have an external broker us Apache Active MQ-MQTT. I have a cumulocity IoT platform on the cloud. I don’t understand how I can connect and subscribe my cumulocity application to broker MQTT.
t.jacquard
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