package com.alibaba.jstorm.daemon.nimbus.metric.flush;
import java.util.HashMap;
import java.util.Map;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.alibaba.jstorm.daemon.nimbus.metric.MetricEvent;
import com.alibaba.jstorm.metric.TopologyMetricContext;
public class FlushEvent extends MetricEvent {
private static final Logger LOG = LoggerFactory.getLogger(FlushEvent.class);
@Override
public void run() {
if (!context.getNimbusData().isLeader()) {
return;
}
// if metricUploader is not fully initialized, return directly
if (context.getMetricUploader() == null) {
LOG.info("Context Metric Uploader isn't ready");
return;
}
try {
long start = System.currentTimeMillis();
for (Map.Entry<String, TopologyMetricContext> entry : context.getTopologyMetricContexts().entrySet()) {
String topologyId = entry.getKey();
TopologyMetricContext metricContext = entry.getValue();
Map<String, Long> cachedMeta = context.getMetricCache().getMeta(topologyId);
if (cachedMeta == null) {
cachedMeta = new HashMap<>();
}
Map<String, Long> memMeta = metricContext.getMemMeta();
if (memMeta.size() > cachedMeta.size()) {
cachedMeta.putAll(memMeta);
}
context.getMetricCache().putMeta(topologyId, cachedMeta);
metricContext.setSyncMeta(false);
int curSize = cachedMeta.size();
if (curSize != metricContext.getFlushedMetaNum()) {
metricContext.setFlushedMetaNum(curSize);
context.getMetricUploader().registerMetrics(context.getClusterName(), topologyId, cachedMeta);
LOG.info("Flush metric meta, topology:{}, total:{}, cost:{}.", topologyId, curSize,
System.currentTimeMillis() - start);
}
context.getStormClusterState().set_topology_metric(topologyId, curSize);
}
} catch (Exception ex) {
LOG.error("Error", ex);
}
}
}