Merge "Define DNS statistic data atom in atoms.proto file"

        WifiEnabledStateChanged wifi_enabled_state_changed = 113;

        WifiRunningStateChanged wifi_running_state_changed = 114;

        AppCompacted app_compacted = 115;

        NetworkDnsEventReported network_dns_event_Reported = 116;

    }

    // Pulled events will start at field 10000.

  // The process state at the time of compaction.

  optional android.app.ProcessStateEnum process_state = 16 [default = PROCESS_STATE_UNKNOWN];

}

/**

 * Logs the latency period(in microseconds) and the return code of

 * the DNS(Domain Name System) lookups.

 * These 4 methods(GETADDRINFO,GETHOSTBYNAME,GETHOSTBYADDR,RES_NSEND)

 * to get info(address or hostname) from DNS server(or DNS cache).

 * Logged from:

 *   /system/netd/server/DnsProxyListener.cpp

 */

message NetworkDnsEventReported {

    // The types of the DNS lookups, as defined in

    //system/netd/server/binder/android/net/metrics/INetdEventListener.aidl

    enum EventType {

        EVENT_UNKNOWN = 0;

        EVENT_GETADDRINFO = 1;

        EVENT_GETHOSTBYNAME = 2;

        EVENT_GETHOSTBYADDR = 3;

        EVENT_RES_NSEND = 4;

    }

    optional EventType event_type = 1;

    // The return value of the DNS resolver for each DNS lookups.

    //bionic/libc/include/netdb.h

    //system/netd/resolv/include/netd_resolv/resolv.h

    enum ReturnCode {

        EAI_NOERR = 0;

        EAI_ADDRFAMILY = 1;

        EAI_AGAIN = 2;

        EAI_BADFLAGS = 3;

        EAI_FAIL = 4;

        EAI_FAMILY = 5;

        EAI_MEMORY = 6;

        EAI_NODATA = 7;

        EAI_NONAME = 8;

        EAI_SERVICE = 9;

        EAI_SOCKTYPE = 10;

        EAI_SYSTEM = 11;

        EAI_BADHINTS = 12;

        EAI_PROTOCOL = 13;

        EAI_OVERFLOW = 14;

        RESOLV_TIMEOUT = 255;

        EAI_MAX = 256;

    }

    optional ReturnCode return_code = 2;

    // The latency period(in microseconds) it took for this DNS lookup to complete.

    optional int32 latency_micros = 3;

}