BasicFlowletContext(
Program program,
final String flowletId,
int instanceId,
RunId runId,
int instanceCount,
Set<String> datasets,
Arguments runtimeArguments,
FlowletSpecification flowletSpec,
MetricsCollectionService metricsCollectionService,
DiscoveryServiceClient discoveryServiceClient,
DatasetFramework dsFramework) {
super(
program,
runId,
runtimeArguments,
datasets,
getMetricCollector(metricsCollectionService, program, flowletId, runId.getId(), instanceId),
dsFramework,
discoveryServiceClient);
this.namespaceId = program.getNamespaceId();
this.flowId = program.getName();
this.flowletId = flowletId;
this.groupId = FlowUtils.generateConsumerGroupId(program, flowletId);
this.instanceId = instanceId;
this.instanceCount = instanceCount;
this.flowletSpec = flowletSpec;
this.userMetrics =
new ProgramUserMetrics(
getMetricCollector(
metricsCollectionService, program, flowletId, runId.getId(), instanceId));
// TODO - does this have to cache the metric collectors? Metrics framework itself has a cache
// [CDAP-2334]
this.queueMetrics =
CacheBuilder.newBuilder()
.expireAfterAccess(1, TimeUnit.HOURS)
.build(
new CacheLoader<String, MetricsContext>() {
@Override
public MetricsContext load(String key) throws Exception {
return getProgramMetrics()
.childContext(Constants.Metrics.Tag.FLOWLET_QUEUE, key);
}
});
this.producerMetrics =
CacheBuilder.newBuilder()
.expireAfterAccess(1, TimeUnit.HOURS)
.build(
new CacheLoader<ImmutablePair<String, String>, MetricsContext>() {
@Override
public MetricsContext load(ImmutablePair<String, String> key) throws Exception {
return getProgramMetrics()
.childContext(
ImmutableMap.of(
Constants.Metrics.Tag.PRODUCER, key.getFirst(),
Constants.Metrics.Tag.FLOWLET_QUEUE, key.getSecond(),
Constants.Metrics.Tag.CONSUMER,
BasicFlowletContext.this.flowletId));
}
});
}