tree c7d6fa12711a77d8d1198ff6d2305f7e5b4704c3
parent b9da5e9a8c17c3ca2af6c0c941200abbe29be0f5
author lifr <lifr@google.com> 1577784297 +0800
committer Frank Li <lifr@google.com> 1578277682 +0000

Fill in DNS query type in DNS metric when DNS lookup hit cache

- When looking up DNS in cache, Rasta and DNS statistics are required
  Perform statistical analysis based on the type of DNS query.

The DNS stats proto shows "query type" as following:
============================================================
Without the commit:
        dns_query_events {
          dns_query_event {
            cache_hit: CS_FOUND
            latency_micros: 12
          }
With the commit:
        dns_query_events {
          dns_query_event {
            type: NS_T_AAAA <= ”DNS　query type”
            cache_hit: CS_FOUND
            latency_micros: 12
          }


Bug: 147031435
Test: statsd_testdrive
Change-Id: Iac6a6f819104247ecec65bb4134a33ddd66cfa9c