7.3 Testing the Count Connector

Start the Gateway:
In the Gateway terminal window run:

../otelcol --config=gateway.yaml

Start the Agent:
In the Agent terminal window run:

../otelcol --config=agent.yaml

Start the Loadgen:
In the Spans terminal window send 8 spans with the following loadgen command:

../loadgen -count 8

Both the Agent and Gateway will display debug information, showing they are processing data. Wait until the loadgen completes.

Verify the metrics:
While processing the span, the Agent, has generated metrics and passed them on to the Gateway. The Gateway has written them into gateway-metrics.out.

To confirm the presence of user.card-chargeand verify each one has an attribute user.name in the metrics output, run the following jq query:

jq -r '.resourceMetrics[].scopeMetrics[].metrics[] | select(.name == "user.card-charge") | .sum.dataPoints[] | "\(.attributes[] | select(.key == "user.name").value.stringValue)\t\(.asDouble)"' gateway-metrics.out | while IFS=$'\t' read -r name charge; do
    printf "%-20s %s\n" "$name" "$charge"
done    

George Lucas         67.49
Frodo Baggins        87.14
Thorin Oakenshield   90.98
Luke Skywalker       51.37
Luke Skywalker       65.56
Thorin Oakenshield   67.5
Thorin Oakenshield   66.66
Peter Jackson        94.39