1 //
2 // Copyright (C) 2022 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 #include <android-base/logging.h>
17 
18 #include "host/commands/metrics/events.h"
19 #include "host/commands/metrics/host_receiver.h"
20 #include "host/commands/metrics/metrics_configs.h"
21 #include "host/commands/metrics/metrics_defs.h"
22 #include "host/commands/metrics/proto/cf_metrics_protos.h"
23 #include "host/libs/metrics/metrics_receiver.h"
24 #include "host/libs/msg_queue/msg_queue.h"
25 
26 namespace cuttlefish {
27 
MetricsHostReceiver(bool is_metrics_enabled)28 MetricsHostReceiver::MetricsHostReceiver(bool is_metrics_enabled)
29     : is_metrics_enabled_(is_metrics_enabled) {}
30 
~MetricsHostReceiver()31 MetricsHostReceiver::~MetricsHostReceiver() {}
32 
ServerLoop()33 void MetricsHostReceiver::ServerLoop() {
34   auto msg_queue = SysVMessageQueue::Create(metrics_queue_name_);
35   if (msg_queue == NULL) {
36     LOG(FATAL) << "create: failed to create" << metrics_queue_name_;
37   }
38 
39   struct msg_buffer msg = {0, {0}};
40   while (true) {
41     int rc = msg_queue->Receive(&msg, MAX_MSG_SIZE, 1, true);
42     if (rc == -1) {
43       LOG(FATAL) << "receive: failed to receive any messages";
44     }
45 
46     std::string text(msg.mesg_text);
47     LOG(INFO) << "Metrics host received: " << text;
48 
49     // Process the received message
50     ProcessMessage(text);
51 
52     sleep(1);
53   }
54 }
55 
Join()56 void MetricsHostReceiver::Join() { thread_.join(); }
57 
Initialize(const std::string & metrics_queue_name)58 bool MetricsHostReceiver::Initialize(const std::string& metrics_queue_name) {
59   metrics_queue_name_ = metrics_queue_name;
60   if (!is_metrics_enabled_) {
61     LOG(ERROR) << "init: metrics not enabled";
62     return false;
63   }
64 
65   // Start the server loop in a separate thread
66   thread_ = std::thread(&MetricsHostReceiver::ServerLoop, this);
67   return true;
68 }
69 
ProcessMessage(const std::string & text)70 void MetricsHostReceiver::ProcessMessage(const std::string& text) {
71   auto hostDev = CuttlefishLogEvent::CUTTLEFISH_DEVICE_TYPE_HOST;
72 
73   int rc = MetricsExitCodes::kSuccess;
74 
75   if (text == "VMStart") {
76     rc = Clearcut::SendVMStart(hostDev);
77   } else if (text == "VMStop") {
78     rc = Clearcut::SendVMStop(hostDev);
79   } else if (text == "DeviceBoot") {
80     rc = Clearcut::SendDeviceBoot(hostDev);
81   } else if (text == "LockScreen") {
82     rc = Clearcut::SendLockScreen(hostDev);
83   } else {
84     LOG(ERROR) << "Message not recognized: " << text;
85     rc = MetricsExitCodes::kMetricsError;
86   }
87 
88   if (rc != MetricsExitCodes::kSuccess) {
89     LOG(ERROR) << "Message failed to send to ClearCut: " << text;
90   }
91 }
92 
93 }  // namespace cuttlefish
94