Add API to let metrics directly drop data without writing to an output.

+ Metrics will do flushIfNeeded() to correctly move the clock and informing
  AnomalyTracker the past bucket info, and then clear past buckets.

+ We will still keep the current bucket data for the validity of the future metrics.

Bug: 70571383
Test: statsd_test
Change-Id: Ib13c45574974e7b4e82bd8f305091dc93bda76f5

1 files changed, 6 insertions, 0 deletions

diff --git a/cmds/statsd/src/metrics/MetricsManager.cpp b/cmds/statsd/src/metrics/MetricsManager.cpp
index 4c8a7d8a92d5..06930310bc3f 100644
--- a/cmds/statsd/src/metrics/MetricsManager.cpp
+++ b/cmds/statsd/src/metrics/MetricsManager.cpp
@@ -173,6 +173,12 @@ void MetricsManager::dumpStates(FILE* out, bool verbose) {
     }
 }
 
+void MetricsManager::dropData(const uint64_t dropTimeNs) {
+    for (const auto& producer : mAllMetricProducers) {
+        producer->dropData(dropTimeNs);
+    }
+}
+
 void MetricsManager::onDumpReport(const uint64_t dumpTimeStampNs, ProtoOutputStream* protoOutput) {
     VLOG("=========================Metric Reports Start==========================");
     // one StatsLogReport per MetricProduer