| package org.onlab.onos.metrics.topology.cli; |
| |
| import java.io.IOException; |
| import java.util.concurrent.TimeUnit; |
| |
| import com.codahale.metrics.Gauge; |
| import com.codahale.metrics.Meter; |
| import com.codahale.metrics.json.MetricsModule; |
| import com.fasterxml.jackson.core.JsonProcessingException; |
| import com.fasterxml.jackson.databind.JsonNode; |
| import com.fasterxml.jackson.databind.ObjectMapper; |
| import com.fasterxml.jackson.databind.node.ObjectNode; |
| import org.apache.karaf.shell.commands.Command; |
| import org.onlab.onos.cli.AbstractShellCommand; |
| import org.onlab.onos.metrics.topology.TopologyMetricsService; |
| |
| /** |
| * Command to show the topology events metrics. |
| */ |
| @Command(scope = "onos", name = "topology-events-metrics", |
| description = "Lists topology events metrics") |
| public class TopologyEventsMetricsCommand extends AbstractShellCommand { |
| |
| private static final String FORMAT_GAUGE = |
| "Last Topology Event Timestamp (ms from epoch)=%d"; |
| private static final String FORMAT_METER = |
| "Topology Events count=%d rate(events/sec) mean=%f m1=%f m5=%f m15=%f"; |
| |
| @Override |
| protected void execute() { |
| TopologyMetricsService service = get(TopologyMetricsService.class); |
| Gauge<Long> gauge = service.lastEventTimestampEpochMsGauge(); |
| Meter meter = service.eventRateMeter(); |
| |
| if (outputJson()) { |
| ObjectMapper mapper = new ObjectMapper() |
| .registerModule(new MetricsModule(TimeUnit.SECONDS, |
| TimeUnit.MILLISECONDS, |
| false)); |
| ObjectNode result = mapper.createObjectNode(); |
| try { |
| // |
| // NOTE: The API for custom serializers is incomplete, |
| // hence we have to parse the JSON string to create JsonNode. |
| // |
| final String gaugeJson = mapper.writeValueAsString(gauge); |
| final String meterJson = mapper.writeValueAsString(meter); |
| JsonNode gaugeNode = mapper.readTree(gaugeJson); |
| JsonNode meterNode = mapper.readTree(meterJson); |
| result.put("lastTopologyEventTimestamp", gaugeNode); |
| result.put("listenerEventRate", meterNode); |
| } catch (JsonProcessingException e) { |
| log.error("Error writing value as JSON string", e); |
| } catch (IOException e) { |
| log.error("Error writing value as JSON string", e); |
| } |
| print("%s", result); |
| } else { |
| TimeUnit rateUnit = TimeUnit.SECONDS; |
| double rateFactor = rateUnit.toSeconds(1); |
| print(FORMAT_GAUGE, gauge.getValue()); |
| print(FORMAT_METER, meter.getCount(), |
| meter.getMeanRate() * rateFactor, |
| meter.getOneMinuteRate() * rateFactor, |
| meter.getFiveMinuteRate() * rateFactor, |
| meter.getFifteenMinuteRate() * rateFactor); |
| } |
| } |
| } |