How to create a custom measurement microservice

[rushikesh_n (Rushikesh Nagothanekar)]

I wanted to create custom measurement through a microservice like c8y_weight measurement through a microservice,can anyone help in

[Stefan_Witschel]

Please provide more details like used programming language, SDK used vs. no SDK Used etc.
What did you try so far? (code snippets etc.)

[rushikesh_n (Rushikesh Nagothanekar)]

Programming language java
code snippet:

try {
            final ManagedObjectRepresentation deviceRepresentation = inventoryApi.get(new GId());
            MeasurementRepresentation measurementRepresentation = new MeasurementRepresentation();
            measurementRepresentation.setSource(deviceRepresentation);
            measurementRepresentation.setDateTime(new DateTime());
            measurementRepresentation.setType("c8y_Humidity");
            measurementRepresentation.setProperty("c8y_humidity",json.getJSONObject("current").get("humidity"));
            MeasurementRepresentation response = measurementApi.create(measurementRepresentation);
            return Optional.of(response);
        } catch (SDKException ex) { // handling  exception
            System.out.println(ex);
        }

I wanted to add unit as well in it,so how can it be done

[Kai_Sieben]

Hi,

you can add one or multiple measurements with value and unit like this:

import com.cumulocity.model.measurement.MeasurementValue;
...
String measurementType= "myType";
String series = "temp";

MeasurementRepresentation mr = new MeasurementRepresentation();
mr.setType(measurementType);

Map<String, MeasurementValue> measurementSeries = new HashMap<>();

String unit = "C";
long value = 1;

MeasurementValue m = new MeasurementValue(BigDecimal.valueOf(value), unit);
measurementSeries.put(series, m);

mr.set(measurementSeries, measurementType);
measurementApi.create(mr);