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Molter73Molter73
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Restore ProcessSignalFormatter, add SensorClientFormatter
This change makes it possible to have backwards compatibility with older sensor versions that might no implement the new service.
1 parent 7d2c4e1 commit 3ce1606

13 files changed

+624
-68
lines changed

‎collector/lib/CollectorOutput.cpp‎

Lines changed: 43 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -1,7 +1,35 @@
11
#include "CollectorOutput.h"
22

3+
#include "internalapi/sensor/collector.pb.h"
4+
#include "internalapi/sensor/collector_iservice.pb.h"
5+
6+
#include "HostInfo.h"
7+
38
namespace collector {
49

10+
CollectorOutput::CollectorOutput(const CollectorConfig& config) {
11+
if (config.grpc_channel != nullptr) {
12+
auto sensor_client = std::make_unique<SensorClient>(config.grpc_channel);
13+
auto signal_client = std::make_unique<SignalServiceClient>(config.grpc_channel);
14+
sensor_clients_.emplace_back(std::move(sensor_client));
15+
signal_clients_.emplace_back(std::move(signal_client));
16+
}
17+
18+
if (config.UseStdout()) {
19+
auto sensor_client = std::make_unique<SensorClientStdout>();
20+
auto signal_client = std::make_unique<StdoutSignalServiceClient>();
21+
sensor_clients_.emplace_back(std::move(sensor_client));
22+
signal_clients_.emplace_back(std::move(signal_client));
23+
}
24+
25+
if (sensor_clients_.empty() || signal_clients_.empty()) {
26+
CLOG(FATAL) << "No available output configured";
27+
}
28+
29+
StartClients(sensor_clients_);
30+
StartClients(signal_clients_);
31+
}
32+
533
namespace {
634
SignalHandler::Result SensorOutput(std::vector<std::unique_ptr<ISensorClient>>& clients, const sensor::MsgFromCollector& msg) {
735
for (auto& client : clients) {
@@ -39,4 +67,19 @@ SignalHandler::Result CollectorOutput::SendMsg(const MessageType& msg) {
3967

4068
return std::visit(visitor, msg);
4169
}
70+
71+
void CollectorOutput::Register() {
72+
sensor::MsgFromCollector msg;
73+
msg.clear_info();
74+
msg.clear_process_signal();
75+
msg.mutable_register_()->set_hostname(GetHostname());
76+
77+
for (const auto& client : sensor_clients_) {
78+
auto res = client->SendMsg(msg);
79+
if (res != SignalHandler::PROCESSED) {
80+
use_sensor_client_ = false;
81+
break;
82+
}
83+
}
84+
}
4285
} // namespace collector

‎collector/lib/CollectorOutput.h‎

Lines changed: 6 additions & 22 deletions
Original file line numberDiff line numberDiff line change
@@ -22,35 +22,17 @@ class CollectorOutput {
2222
CollectorOutput& operator=(const CollectorOutput&) = delete;
2323
CollectorOutput& operator=(CollectorOutput&&) = delete;
2424

25-
CollectorOutput(const CollectorConfig& config) {
26-
if (config.grpc_channel != nullptr) {
27-
auto sensor_client = std::make_unique<SensorClient>(config.grpc_channel);
28-
auto signal_client = std::make_unique<SignalServiceClient>(config.grpc_channel);
29-
sensor_clients_.emplace_back(std::move(sensor_client));
30-
signal_clients_.emplace_back(std::move(signal_client));
31-
}
32-
33-
if (config.UseStdout()) {
34-
auto sensor_client = std::make_unique<SensorClientStdout>();
35-
auto signal_client = std::make_unique<StdoutSignalServiceClient>();
36-
sensor_clients_.emplace_back(std::move(sensor_client));
37-
signal_clients_.emplace_back(std::move(signal_client));
38-
}
39-
40-
if (sensor_clients_.empty() || signal_clients_.empty()) {
41-
CLOG(FATAL) << "No available output configured";
42-
}
43-
44-
StartClients(sensor_clients_);
45-
StartClients(signal_clients_);
46-
}
25+
CollectorOutput(const CollectorConfig& config);
4726

4827
~CollectorOutput() {
4928
StopClients(sensor_clients_);
5029
StopClients(signal_clients_);
5130
}
5231

5332
SignalHandler::Result SendMsg(const MessageType& msg);
33+
void Register();
34+
35+
bool UseSensorClient() { return use_sensor_client_; }
5436

5537
private:
5638
template <typename T>
@@ -69,6 +51,8 @@ class CollectorOutput {
6951

7052
std::vector<std::unique_ptr<ISensorClient>> sensor_clients_;
7153
std::vector<std::unique_ptr<ISignalServiceClient>> signal_clients_;
54+
55+
bool use_sensor_client_{true};
7256
};
7357

7458
} // namespace collector

‎collector/lib/CollectorService.cpp‎

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -116,6 +116,8 @@ void CollectorService::RunForever() {
116116
CLOG(FATAL) << "Unable to start collector stats exporter";
117117
}
118118

119+
output_.Register();
120+
119121
system_inspector_.Start();
120122

121123
ControlValue cv;

‎collector/lib/ProcessSignalFormatter.cpp‎

Lines changed: 20 additions & 17 deletions
Original file line numberDiff line numberDiff line change
@@ -4,7 +4,6 @@
44

55
#include <google/protobuf/util/time_util.h>
66

7-
#include "internalapi/sensor/collector_iservice.pb.h"
87
#include "internalapi/sensor/signal_iservice.pb.h"
98

109
#include "CollectorStats.h"
@@ -68,7 +67,7 @@ ProcessSignalFormatter::ProcessSignalFormatter(
6867

6968
ProcessSignalFormatter::~ProcessSignalFormatter() = default;
7069

71-
const sensor::MsgFromCollector* ProcessSignalFormatter::ToProtoMessage(sinsp_evt* event) {
70+
const SignalStreamMessage* ProcessSignalFormatter::ToProtoMessage(sinsp_evt* event) {
7271
if (process_signals[event->get_type()] == ProcessSignalType::UNKNOWN_PROCESS_TYPE) {
7372
return nullptr;
7473
}
@@ -85,30 +84,34 @@ const sensor::MsgFromCollector* ProcessSignalFormatter::ToProtoMessage(sinsp_evt
8584
return nullptr;
8685
}
8786

88-
auto* msg = AllocateRoot();
89-
msg->clear_info();
90-
msg->clear_register_();
91-
msg->set_allocated_process_signal(process_signal);
92-
return msg;
87+
auto* signal = Allocate<Signal>();
88+
signal->set_allocated_process_signal(process_signal);
89+
90+
SignalStreamMessage* signal_stream_message = AllocateRoot();
91+
signal_stream_message->clear_collector_register_request();
92+
signal_stream_message->set_allocated_signal(signal);
93+
return signal_stream_message;
9394
}
9495

95-
const sensor::MsgFromCollector* ProcessSignalFormatter::ToProtoMessage(sinsp_threadinfo* tinfo) {
96+
const SignalStreamMessage* ProcessSignalFormatter::ToProtoMessage(sinsp_threadinfo* tinfo) {
9697
Reset();
9798
if (!ValidateProcessDetails(tinfo)) {
9899
CLOG(INFO) << "Dropping process event: " << tinfo;
99100
return nullptr;
100101
}
101102

102-
ProcessSignal* signal = CreateProcessSignal(tinfo);
103-
if (signal == nullptr) {
103+
ProcessSignal* process_signal = CreateProcessSignal(tinfo);
104+
if (process_signal == nullptr) {
104105
return nullptr;
105106
}
106107

107-
auto* msg = AllocateRoot();
108-
msg->clear_register_();
109-
msg->clear_info();
110-
msg->set_allocated_process_signal(signal);
111-
return msg;
108+
auto* signal = Allocate<Signal>();
109+
signal->set_allocated_process_signal(process_signal);
110+
111+
SignalStreamMessage* signal_stream_message = AllocateRoot();
112+
signal_stream_message->clear_collector_register_request();
113+
signal_stream_message->set_allocated_signal(signal);
114+
return signal_stream_message;
112115
}
113116

114117
ProcessSignal* ProcessSignalFormatter::CreateProcessSignal(sinsp_evt* event) {
@@ -170,7 +173,7 @@ ProcessSignal* ProcessSignalFormatter::CreateProcessSignal(sinsp_evt* event) {
170173
// set time
171174
auto timestamp = Allocate<Timestamp>();
172175
*timestamp = TimeUtil::NanosecondsToTimestamp(event->get_ts());
173-
signal->set_allocated_creation_time(timestamp);
176+
signal->set_allocated_time(timestamp);
174177

175178
// set container_id
176179
if (const std::string* container_id = event_extractor_->get_container_id(event)) {
@@ -235,7 +238,7 @@ ProcessSignal* ProcessSignalFormatter::CreateProcessSignal(sinsp_threadinfo* tin
235238
// set time
236239
auto timestamp = Allocate<Timestamp>();
237240
*timestamp = TimeUtil::NanosecondsToTimestamp(tinfo->m_clone_ts);
238-
signal->set_allocated_creation_time(timestamp);
241+
signal->set_allocated_time(timestamp);
239242

240243
// set container_id
241244
signal->set_container_id(tinfo->m_container_id);

‎collector/lib/ProcessSignalFormatter.h‎

Lines changed: 7 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -7,6 +7,8 @@
77

88
#include "api/v1/signal.pb.h"
99
#include "internalapi/sensor/collector_iservice.pb.h"
10+
#include "internalapi/sensor/signal_iservice.pb.h"
11+
#include "storage/process_indicator.pb.h"
1012

1113
#include "CollectorConfig.h"
1214
#include "ContainerMetadata.h"
@@ -23,18 +25,17 @@ class EventExtractor;
2325

2426
namespace collector {
2527

26-
class ProcessSignalFormatter : public ProtoSignalFormatter<sensor::MsgFromCollector> {
28+
class ProcessSignalFormatter : public ProtoSignalFormatter<sensor::SignalStreamMessage> {
2729
public:
2830
ProcessSignalFormatter(sinsp* inspector, const CollectorConfig& config);
2931
~ProcessSignalFormatter();
3032

3133
using Signal = v1::Signal;
32-
using ProcessSignal = sensor::ProcessSignal;
33-
using LineageInfo = sensor::ProcessSignal_LineageInfo;
34-
using MsgFromCollector = sensor::MsgFromCollector;
34+
using ProcessSignal = storage::ProcessSignal;
35+
using LineageInfo = storage::ProcessSignal_LineageInfo;
3536

36-
const MsgFromCollector* ToProtoMessage(sinsp_evt* event) override;
37-
const MsgFromCollector* ToProtoMessage(sinsp_threadinfo* tinfo);
37+
const sensor::SignalStreamMessage* ToProtoMessage(sinsp_evt* event) override;
38+
const sensor::SignalStreamMessage* ToProtoMessage(sinsp_threadinfo* tinfo) override;
3839

3940
void GetProcessLineage(sinsp_threadinfo* tinfo, std::vector<LineageInfo>& lineage);
4041

‎collector/lib/ProcessSignalHandler.cpp‎

Lines changed: 79 additions & 11 deletions
Original file line numberDiff line numberDiff line change
@@ -6,14 +6,16 @@
66

77
#include <libsinsp/sinsp.h>
88

9-
#include "storage/process_indicator.pb.h"
10-
119
#include "RateLimit.h"
12-
#include "system-inspector/EventExtractor.h"
1310

1411
namespace collector {
1512

16-
std::string compute_process_key(const ::sensor::ProcessSignal& s) {
13+
namespace {
14+
// The template functions in this namespace are meant to be used with
15+
// sensor::ProcessSignal and storage::ProcessSignal, which are almost
16+
// the same... Except they are not...
17+
template <typename S>
18+
std::string compute_process_key(const S& s) {
1719
std::stringstream ss;
1820
ss << s.container_id() << " " << s.name() << " ";
1921
if (s.args().length() <= 256) {
@@ -25,19 +27,39 @@ std::string compute_process_key(const ::sensor::ProcessSignal& s) {
2527
return ss.str();
2628
}
2729

30+
template <typename S>
31+
void dtrace_probe(const S& s) {
32+
const char* name = s.name().c_str();
33+
const uint32_t pid = s.pid();
34+
DTRACE_PROBE2(collector, process_signal_handler, name, pid);
35+
}
36+
} // namespace
37+
2838
SignalHandler::Result ProcessSignalHandler::HandleSignal(sinsp_evt* evt) {
29-
const auto* signal_msg = formatter_.ToProtoMessage(evt);
39+
if (client_->UseSensorClient()) {
40+
return HandleSensorSignal(evt);
41+
}
42+
return HandleProcessSignal(evt);
43+
}
44+
45+
SignalHandler::Result ProcessSignalHandler::HandleExistingProcess(sinsp_threadinfo* tinfo) {
46+
if (client_->UseSensorClient()) {
47+
return HandleExistingProcessSensor(tinfo);
48+
}
49+
return HandleExistingProcessSignal(tinfo);
50+
}
51+
52+
SignalHandler::Result ProcessSignalHandler::HandleProcessSignal(sinsp_evt* evt) {
53+
const auto* signal_msg = signal_formatter_.ToProtoMessage(evt);
3054

3155
if (signal_msg == nullptr) {
3256
++(stats_->nProcessResolutionFailuresByEvt);
3357
return IGNORED;
3458
}
3559

36-
const char* name = signal_msg->process_signal().name().c_str();
37-
const uint32_t pid = signal_msg->process_signal().pid();
38-
DTRACE_PROBE2(collector, process_signal_handler, name, pid);
60+
dtrace_probe(signal_msg->signal().process_signal());
3961

40-
if (!rate_limiter_.Allow(compute_process_key(signal_msg->process_signal()))) {
62+
if (!rate_limiter_.Allow(compute_process_key(signal_msg->signal().process_signal()))) {
4163
++(stats_->nProcessRateLimitCount);
4264
return IGNORED;
4365
}
@@ -52,13 +74,38 @@ SignalHandler::Result ProcessSignalHandler::HandleSignal(sinsp_evt* evt) {
5274
return result;
5375
}
5476

55-
SignalHandler::Result ProcessSignalHandler::HandleExistingProcess(sinsp_threadinfo* tinfo) {
56-
const auto* signal_msg = formatter_.ToProtoMessage(tinfo);
77+
SignalHandler::Result ProcessSignalHandler::HandleExistingProcessSignal(sinsp_threadinfo* tinfo) {
78+
const auto* signal_msg = signal_formatter_.ToProtoMessage(tinfo);
5779
if (signal_msg == nullptr) {
5880
++(stats_->nProcessResolutionFailuresByTinfo);
5981
return IGNORED;
6082
}
6183

84+
if (!rate_limiter_.Allow(compute_process_key(signal_msg->signal().process_signal()))) {
85+
++(stats_->nProcessRateLimitCount);
86+
return IGNORED;
87+
}
88+
89+
auto result = client_->SendMsg(*signal_msg);
90+
if (result == SignalHandler::PROCESSED) {
91+
++(stats_->nProcessSent);
92+
} else if (result == SignalHandler::ERROR) {
93+
++(stats_->nProcessSendFailures);
94+
}
95+
96+
return result;
97+
}
98+
99+
SignalHandler::Result ProcessSignalHandler::HandleSensorSignal(sinsp_evt* evt) {
100+
const auto* signal_msg = sensor_formatter_.ToProtoMessage(evt);
101+
102+
if (signal_msg == nullptr) {
103+
++(stats_->nProcessResolutionFailuresByEvt);
104+
return IGNORED;
105+
}
106+
107+
dtrace_probe(signal_msg->process_signal());
108+
62109
if (!rate_limiter_.Allow(compute_process_key(signal_msg->process_signal()))) {
63110
++(stats_->nProcessRateLimitCount);
64111
return IGNORED;
@@ -74,6 +121,27 @@ SignalHandler::Result ProcessSignalHandler::HandleExistingProcess(sinsp_threadin
74121
return result;
75122
}
76123

124+
SignalHandler::Result ProcessSignalHandler::HandleExistingProcessSensor(sinsp_threadinfo* tinfo) {
125+
const auto* signal_msg = sensor_formatter_.ToProtoMessage(tinfo);
126+
if (signal_msg == nullptr) {
127+
++(stats_->nProcessResolutionFailuresByTinfo);
128+
return IGNORED;
129+
}
130+
131+
if (!rate_limiter_.Allow(compute_process_key(signal_msg->process_signal()))) {
132+
++(stats_->nProcessRateLimitCount);
133+
return IGNORED;
134+
}
135+
136+
auto result = client_->SendMsg(*signal_msg);
137+
if (result == SignalHandler::PROCESSED) {
138+
++(stats_->nProcessSent);
139+
} else if (result == SignalHandler::ERROR) {
140+
++(stats_->nProcessSendFailures);
141+
}
142+
143+
return result;
144+
}
77145
std::vector<std::string> ProcessSignalHandler::GetRelevantEvents() {
78146
return {"execve<"};
79147
}

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