1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #define LOG_TAG "Netd" 18 19 #include "EventReporter.h" 20 #include "log/log.h" 21 22 using android::interface_cast; 23 using android::net::metrics::INetdEventListener; 24 25 int EventReporter::setMetricsReportingLevel(const int level) { 26 if (level < INetdEventListener::REPORTING_LEVEL_NONE 27 || level > INetdEventListener::REPORTING_LEVEL_FULL) { 28 ALOGE("Invalid metrics reporting level %d", level); 29 return -EINVAL; 30 } 31 mReportingLevel = level; 32 return 0; 33 } 34 35 int EventReporter::getMetricsReportingLevel() const { 36 return mReportingLevel; 37 } 38 39 android::sp<INetdEventListener> EventReporter::getNetdEventListener() { 40 std::lock_guard<std::mutex> lock(mutex); 41 if (mNetdEventListener == nullptr) { 42 // Use checkService instead of getService because getService waits for 5 seconds for the 43 // service to become available. The DNS resolver inside netd is started much earlier in the 44 // boot sequence than the framework DNS listener, and we don't want to delay all DNS lookups 45 // for 5 seconds until the DNS listener starts up. 46 android::sp<android::IBinder> b = android::defaultServiceManager()->checkService( 47 android::String16("netd_listener")); 48 if (b != nullptr) { 49 mNetdEventListener = interface_cast<INetdEventListener>(b); 50 } 51 } 52 // If the netd listener service is dead, the binder call will just return an error, which should 53 // be fine because the only impact is that we can't log netd events. In any case, this should 54 // only happen if the system server is going down, which means it will shortly be taking us down 55 // with it. 56 return mNetdEventListener; 57 } 58
