1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
|
#include <unistd.h>
#include <sys/un.h>
#include "config.h"
#include "fstrm_logger.hh"
#ifdef RECURSOR
#include "logger.hh"
#include "logging.hh"
#else
#include "dolog.hh"
#endif
#ifdef HAVE_FSTRM
static const std::string DNSTAP_CONTENT_TYPE = "protobuf:dnstap.Dnstap";
FrameStreamLogger::FrameStreamLogger(const int family, std::string address, bool connect, const std::unordered_map<string, unsigned>& options) :
d_family(family), d_address(std::move(address))
{
try {
d_fwopt = fstrm_writer_options_init();
if (d_fwopt == nullptr) {
throw std::runtime_error("FrameStreamLogger: fstrm_writer_options_init failed.");
}
auto res = fstrm_writer_options_add_content_type(d_fwopt, DNSTAP_CONTENT_TYPE.c_str(), DNSTAP_CONTENT_TYPE.size());
if (res != fstrm_res_success) {
throw std::runtime_error("FrameStreamLogger: fstrm_writer_options_add_content_type failed: " + std::to_string(res));
}
if (d_family == AF_UNIX) {
struct sockaddr_un local{};
if (makeUNsockaddr(d_address, &local) != 0) {
throw std::runtime_error("FrameStreamLogger: Unable to use '" + d_address + "', it is not a valid UNIX socket path.");
}
d_uwopt = fstrm_unix_writer_options_init();
if (d_uwopt == nullptr) {
throw std::runtime_error("FrameStreamLogger: fstrm_unix_writer_options_init failed.");
}
// void return, no error checking.
fstrm_unix_writer_options_set_socket_path(d_uwopt, d_address.c_str());
d_writer = fstrm_unix_writer_init(d_uwopt, d_fwopt);
if (d_writer == nullptr) {
throw std::runtime_error("FrameStreamLogger: fstrm_unix_writer_init() failed.");
}
#ifdef HAVE_FSTRM_TCP_WRITER_INIT
}
else if (family == AF_INET || family == AF_INET6) {
d_twopt = fstrm_tcp_writer_options_init();
if (d_twopt == nullptr) {
throw std::runtime_error("FrameStreamLogger: fstrm_tcp_writer_options_init failed.");
}
try {
ComboAddress inetAddress(d_address);
// void return, no error checking.
fstrm_tcp_writer_options_set_socket_address(d_twopt, inetAddress.toString().c_str());
fstrm_tcp_writer_options_set_socket_port(d_twopt, std::to_string(inetAddress.getPort()).c_str());
}
catch (PDNSException& e) {
throw std::runtime_error("FrameStreamLogger: Unable to use '" + d_address + "': " + e.reason);
}
d_writer = fstrm_tcp_writer_init(d_twopt, d_fwopt);
if (d_writer == nullptr) {
throw std::runtime_error("FrameStreamLogger: fstrm_tcp_writer_init() failed.");
}
#endif
}
else {
throw std::runtime_error("FrameStreamLogger: family " + std::to_string(family) + " not supported");
}
d_iothropt = fstrm_iothr_options_init();
if (d_iothropt == nullptr) {
throw std::runtime_error("FrameStreamLogger: fstrm_iothr_options_init() failed.");
}
res = fstrm_iothr_options_set_queue_model(d_iothropt, FSTRM_IOTHR_QUEUE_MODEL_MPSC);
if (res != fstrm_res_success) {
throw std::runtime_error("FrameStreamLogger: fstrm_iothr_options_set_queue_model failed: " + std::to_string(res));
}
struct setters
{
const std::string name;
fstrm_res (*function)(struct fstrm_iothr_options*, const unsigned int);
};
const std::array<struct setters, 6> list = {{{"bufferHint", fstrm_iothr_options_set_buffer_hint},
{"flushTimeout", fstrm_iothr_options_set_flush_timeout},
{"inputQueueSize", fstrm_iothr_options_set_input_queue_size},
{"outputQueueSize", fstrm_iothr_options_set_output_queue_size},
{"queueNotifyThreshold", fstrm_iothr_options_set_queue_notify_threshold},
{"setReopenInterval", fstrm_iothr_options_set_reopen_interval}}};
for (const auto& entry : list) {
if (auto option = options.find(entry.name); option != options.end() && option->second != 0) {
auto result = entry.function(d_iothropt, option->second);
if (result != fstrm_res_success) {
throw std::runtime_error("FrameStreamLogger: setting " + string(entry.name) + " failed: " + std::to_string(result));
}
}
}
if (connect) {
d_iothr = fstrm_iothr_init(d_iothropt, &d_writer);
if (d_iothr == nullptr) {
throw std::runtime_error("FrameStreamLogger: fstrm_iothr_init() failed.");
}
d_ioqueue = fstrm_iothr_get_input_queue(d_iothr);
if (d_ioqueue == nullptr) {
throw std::runtime_error("FrameStreamLogger: fstrm_iothr_get_input_queue() failed.");
}
}
}
catch (std::runtime_error& e) {
this->cleanup();
throw;
}
}
void FrameStreamLogger::cleanup()
{
if (d_iothr != nullptr) {
fstrm_iothr_destroy(&d_iothr);
d_iothr = nullptr;
}
if (d_iothropt != nullptr) {
fstrm_iothr_options_destroy(&d_iothropt);
d_iothropt = nullptr;
}
if (d_writer != nullptr) {
fstrm_writer_destroy(&d_writer);
d_writer = nullptr;
}
if (d_uwopt != nullptr) {
fstrm_unix_writer_options_destroy(&d_uwopt);
d_uwopt = nullptr;
}
#ifdef HAVE_FSTRM_TCP_WRITER_INIT
if (d_twopt != nullptr) {
fstrm_tcp_writer_options_destroy(&d_twopt);
d_twopt = nullptr;
}
#endif
if (d_fwopt != nullptr) {
fstrm_writer_options_destroy(&d_fwopt);
d_fwopt = nullptr;
}
}
FrameStreamLogger::~FrameStreamLogger()
{
this->cleanup();
}
RemoteLoggerInterface::Result FrameStreamLogger::queueData(const std::string& data)
{
if ((d_ioqueue == nullptr) || d_iothr == nullptr) {
++d_permanentFailures;
return Result::OtherError;
}
uint8_t* frame = (uint8_t*)malloc(data.length()); // NOLINT: it's the API
if (frame == nullptr) {
++d_tooLargeCount;
return Result::TooLarge;
}
memcpy(frame, data.c_str(), data.length());
auto res = fstrm_iothr_submit(d_iothr, d_ioqueue, frame, data.length(), fstrm_free_wrapper, nullptr);
if (res == fstrm_res_success) {
// Frame successfully queued.
++d_framesSent;
// do not call free here
return Result::Queued;
}
if (res == fstrm_res_again) {
free(frame); // NOLINT: it's the API
++d_queueFullDrops;
return Result::PipeFull;
}
// Permanent failure.
free(frame); // NOLINT: it's the API
++d_permanentFailures;
return Result::OtherError;
}
#endif /* HAVE_FSTRM */
|
