Example usage for com.amazonaws.services.cloudwatch.model MetricDatum setStatisticValues

Introduction

In this page you can find the example usage for com.amazonaws.services.cloudwatch.model MetricDatum setStatisticValues.

Prototype

public void setStatisticValues(StatisticSet statisticValues) 

Source Link

Document

The statistical values for the metric.

Usage

From source file:org.apache.nifi.processors.aws.cloudwatch.PutCloudWatchMetric.java

License:Apache License

@Override
public void onTrigger(ProcessContext context, ProcessSession session) throws ProcessException {
    FlowFile flowFile = session.get();//from w ww  .jav a2  s  .c o  m
    if (flowFile == null) {
        return;
    }
    MetricDatum datum = new MetricDatum();

    try {
        datum.setMetricName(context.getProperty(METRIC_NAME).evaluateAttributeExpressions(flowFile).getValue());
        final String valueString = context.getProperty(VALUE).evaluateAttributeExpressions(flowFile).getValue();
        if (valueString != null) {
            datum.setValue(Double.parseDouble(valueString));
        } else {
            StatisticSet statisticSet = new StatisticSet();
            statisticSet.setMaximum(Double.parseDouble(
                    context.getProperty(MAXIMUM).evaluateAttributeExpressions(flowFile).getValue()));
            statisticSet.setMinimum(Double.parseDouble(
                    context.getProperty(MINIMUM).evaluateAttributeExpressions(flowFile).getValue()));
            statisticSet.setSampleCount(Double.parseDouble(
                    context.getProperty(SAMPLECOUNT).evaluateAttributeExpressions(flowFile).getValue()));
            statisticSet.setSum(Double
                    .parseDouble(context.getProperty(SUM).evaluateAttributeExpressions(flowFile).getValue()));

            datum.setStatisticValues(statisticSet);
        }

        final String timestamp = context.getProperty(TIMESTAMP).evaluateAttributeExpressions(flowFile)
                .getValue();
        if (timestamp != null) {
            datum.setTimestamp(new Date(Long.parseLong(timestamp)));
        }

        final String unit = context.getProperty(UNIT).evaluateAttributeExpressions(flowFile).getValue();
        if (unit != null) {
            datum.setUnit(unit);
        }

        // add dynamic properties as dimensions
        if (!dynamicPropertyNames.isEmpty()) {
            final List<Dimension> dimensions = new ArrayList<>(dynamicPropertyNames.size());
            for (String propertyName : dynamicPropertyNames) {
                final String propertyValue = context.getProperty(propertyName)
                        .evaluateAttributeExpressions(flowFile).getValue();
                if (StringUtils.isNotBlank(propertyValue)) {
                    dimensions.add(new Dimension().withName(propertyName).withValue(propertyValue));
                }
            }
            datum.withDimensions(dimensions);
        }

        final PutMetricDataRequest metricDataRequest = new PutMetricDataRequest()
                .withNamespace(context.getProperty(NAMESPACE).evaluateAttributeExpressions(flowFile).getValue())
                .withMetricData(datum);

        putMetricData(metricDataRequest);
        session.transfer(flowFile, REL_SUCCESS);
        getLogger().info("Successfully published cloudwatch metric for {}", new Object[] { flowFile });
    } catch (final Exception e) {
        getLogger().error("Failed to publish cloudwatch metric for {} due to {}", new Object[] { flowFile, e });
        flowFile = session.penalize(flowFile);
        session.transfer(flowFile, REL_FAILURE);
    }

}

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